37 files changed, 2964 insertions, 228 deletions

diff --git a/ChangeLog b/ChangeLog
index ce2014288e6..f47d2b70585 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,31 @@
+2013-05-16  Eli Zaretskii  <eliz@gnu.org>
+
+        * lib/Makefile.am: If building for MS-Windows, include
+        nt/gnulib.mk instead of lib/gnulib.mk.
+
+        * configure.ac: Adapt to MSYS build on MS-Windows.
+
+        * Makefile.in (NTDIR): New variable, for the MSYS build on
+        MS-Windows.
+        (SUBDIR): Add $(NTDIR).
+        (.PHONY): Add epaths-force-w32.
+        (msys_to_w32): New variable.
+        (epaths-force-w32, install-nt, uninstall-nt): New targets.
+        (lib-src src): Add $(NTLIB) to prerequisites.
+        (lib lib-src lisp leim nt): Add 'nt'.
+        (config.status): Use $(CFG).
+        (.PHONY): Add install-$(NTDIR) and uninstall-$(NTDIR).
+        (install, install-arch-dep): Add install-$(NTDIR).
+        (uninstall): Depend on uninstall-$(NTDIR).
+        (mostlyclean, clean, distclean, bootstrap-clean): Add 'nt'.
+
+        * GNUmakefile (CFG): New variable, uses mingw-cfg.site as
+        CONFIG_SITE for the MSYS build on MS-Windows.
+        (Makefile): Use $(CFG).
+
+        * .bzrignore: Ignore *.res, *.tmp, and *.map.  Remove
+        src/emacs.res.
+
 2013-05-16  Paul Eggert  <eggert@cs.ucla.edu>
 
         Merge from gnulib, incorporating:
diff --git a/GNUmakefile b/GNUmakefile
index b829e93b498..a2a630ba9d5 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -32,6 +32,11 @@
 # run "configure" by hand.  But run autogen.sh first, if the source
 # was checked out directly from the repository.
 
+ifneq ($(MSYSTEM),)
+CFG = CONFIG_SITE=$(CURDIR)/nt/mingw-cfg.site
+else
+CFG =
+endif
 
 # If a Makefile already exists, just use it.
 
@@ -70,7 +75,7 @@ configure:
 Makefile: configure
         @echo >&2 'There seems to be no Makefile in this directory.'
         @echo >&2 'Running ./configure ...'
-        ./configure
+        $(CFG) ./configure
         @echo >&2 'Makefile built.'
 
 endif
diff --git a/Makefile.in b/Makefile.in
index 3c1feae5945..583aa99f83d 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -93,6 +93,9 @@ version=@version@
 ### for, like `mips-dec-ultrix' or `sparc-sun-sunos'.
 configuration=@configuration@
 
+### The nt/ subdirectory gets built only for MinGW
+NTDIR=@NTDIR@
+
 # ==================== Where To Install Things ====================
 
 # Location to install Emacs.app under GNUstep / Mac OS X.
@@ -272,23 +275,23 @@ EMACS = ${EMACS_NAME}${EXEEXT}
 EMACSFULL = `echo emacs-${version} | sed '$(TRANSFORM)'`${EXEEXT}
 
 # Subdirectories to make recursively.
-SUBDIR = lib lib-src src lisp leim
+SUBDIR = $(NTDIR) lib lib-src src lisp leim
 
 # The subdir makefiles created by config.status.
 SUBDIR_MAKEFILES_IN = @SUBDIR_MAKEFILES_IN@
 SUBDIR_MAKEFILES = `echo $(SUBDIR_MAKEFILES_IN:.in=) | sed 's|$(srcdir)/||g'`
 
-# Subdirectories to install, and where they'll go.
-# lib-src's makefile knows how to install it, so we don't do that here.
-# Directories that cannot simply be copied, eg info,
-# are treated separately.
-# quail appears twice because in out-of-tree builds, it exists twice.
+# Subdirectories to install, and where they'll go.  lib-src's and nt's
+# makefiles know how to install them, so we don't do that here.
+# Directories that cannot simply be copied, eg info, are treated
+# separately.  quail appears twice because in out-of-tree builds, it
+# exists twice.
 COPYDIR = ${srcdir}/etc ${srcdir}/lisp ${srcdir}/leim/ja-dic ${srcdir}/leim/quail leim/quail
 COPYDESTS = $(DESTDIR)${etcdir} $(DESTDIR)${lispdir} $(DESTDIR)${leimdir}/ja-dic $(DESTDIR)${leimdir}/quail $(DESTDIR)${leimdir}/quail
 
 all: ${SUBDIR}
 
-.PHONY: all ${SUBDIR} blessmail epaths-force FRC
+.PHONY: all ${SUBDIR} blessmail epaths-force epaths-force-w32 FRC
 
 removenullpaths=sed -e 's/^://g' -e 's/:$$//g' -e 's/::/:/g'
 
@@ -315,7 +318,20 @@ epaths-force: FRC
           -e 's;\(#.*PATH_DOC\).*$$;\1 "${docdir}";') &&                \
         ${srcdir}/build-aux/move-if-change epaths.h.$$$$ src/epaths.h
 
-lib-src src: lib
+# Convert MSYS-style /x/foo file name into x:/foo that Windows can grok.
+msys_to_w32=sed -e 's,^/\([A-Za-z]\)/,\1:/,'
+
+# The w32 build needs a slightly different editing, and it uses
+# nt/epaths.nt as the template.
+epaths-force-w32: FRC
+        @(w32srcdir=`echo "${srcdir}" | ${msys_to_w32}` ;       \
+          sed < ${srcdir}/nt/epaths.nt > epaths.h.$$$$          \
+          -e '/^.*#/s/@VER@/${version}/g'                       \
+          -e '/^.*#/s/@CFG@/${configuration}/g'                 \
+          -e "/^.*#/s|@SRC@|$${w32srcdir}|g") &&                \
+        ${srcdir}/build-aux/move-if-change epaths.h.$$$$ src/epaths.h
+
+lib-src src: $(NTDIR) lib
 
 src:    lib-src FRC
 
@@ -324,7 +340,7 @@ src:	lib-src FRC
 lisp leim: src
 
 # These targets should be "${SUBDIR} without `src'".
-lib lib-src lisp leim: Makefile FRC
+lib lib-src lisp leim nt: Makefile FRC
         cd $@ && $(MAKE) all $(MFLAGS)                         \
           CC='${CC}' CFLAGS='${CFLAGS}' CPPFLAGS='${CPPFLAGS}' \
           LDFLAGS='${LDFLAGS}' MAKE='${MAKE}'
@@ -378,9 +394,9 @@ $(MAKEFILE_NAME): config.status $(srcdir)/src/config.in \
 
 config.status: ${srcdir}/configure ${srcdir}/lisp/version.el
         if [ -x ./config.status ]; then \
-            ./config.status --recheck;  \
+            $(CFG) ./config.status --recheck;   \
         else                            \
-            $(srcdir)/configure $(CONFIGURE_FLAGS); \
+            $(CFG) $(srcdir)/configure $(CONFIGURE_FLAGS); \
         fi
 
 AUTOCONF_INPUTS = $(srcdir)/configure.ac $(srcdir)/aclocal.m4
@@ -417,13 +433,14 @@ $(srcdir)/src/stamp-h.in: $(AUTOCONF_INPUTS)
 # ==================== Installation ====================
 
 .PHONY: install install-arch-dep install-arch-indep install-doc install-info
-.PHONY: install-man install-etc install-strip uninstall
+.PHONY: install-man install-etc install-strip install-$(NTDIR)
+.PHONY: uninstall uninstall-$(NTDIR)
 
 ## If we let lib-src do its own installation, that means we
 ## don't have to duplicate the list of utilities to install in
 ## this Makefile as well.
 
-install: all install-arch-indep install-doc install-arch-dep blessmail
+install: all install-arch-indep install-doc install-arch-dep install-$(NTDIR) blessmail
         @true
 
 ## Ensure that $subdir contains a subdirs.el file.
@@ -444,7 +461,7 @@ write_subdir=if [ -f $${subdir}/subdirs.el ]; \
 ### Install the executables that were compiled specifically for this machine.
 ### We do install-arch-indep first because the executable needs the
 ### Lisp files and DOC file to work properly.
-install-arch-dep: src install-arch-indep install-doc
+install-arch-dep: src install-arch-indep install-doc install-$(NTDIR)
         umask 022; ${MKDIR_P} $(DESTDIR)${bindir}
         cd lib-src && \
           $(MAKE) install $(MFLAGS) prefix=${prefix} \
@@ -464,6 +481,16 @@ install-arch-dep: src install-arch-indep install-doc
           rm -rf ${ns_appresdir}/share; \
         fi
 
+### Windows-specific install target for installing programs produced
+### in nt/, and its Posix do-nothing shadow.
+install-:
+install-nt:
+        cd $(NTDIR) && \
+          $(MAKE) install $(MFLAGS) prefix=${prefix} \
+            exec_prefix=${exec_prefix} bindir=${bindir} \
+            libexecdir=${libexecdir} archlibdir=${archlibdir} \
+            INSTALL_STRIP=${INSTALL_STRIP}
+
 ## In the share directory, we are deleting:
 ## applications (with emacs.desktop, also found in etc/)
 ## emacs (basically empty except for unneeded site-lisp directories)
@@ -678,11 +705,12 @@ install-strip:
 ### create (but not the noninstalled files such as `make all' would create).
 ###
 ### Don't delete the lisp and etc directories if they're in the source tree.
-uninstall:
+uninstall: uninstall-$(NTDIR)
         cd lib-src &&                                   \
          $(MAKE) $(MFLAGS) uninstall                    \
             prefix=${prefix} exec_prefix=${exec_prefix} \
             bindir=${bindir} libexecdir=${libexecdir} archlibdir=${archlibdir}
+
         -unset CDPATH; \
         for dir in $(DESTDIR)${lispdir} $(DESTDIR)${etcdir} ; do        \
           if [ -d $${dir} ]; then                       \
@@ -727,6 +755,15 @@ uninstall:
           [ -s $${file} ] || rm -f $$file; \
         done
 
+### Windows-specific uninstall target for removing programs produced
+### in nt/, and its Posix do-nothing shadow.
+uninstall-:
+uninstall-nt:
+        cd $(NTDIR) &&                                  \
+         $(MAKE) $(MFLAGS) uninstall                    \
+            prefix=${prefix} exec_prefix=${exec_prefix} \
+            bindir=${bindir} libexecdir=${libexecdir} archlibdir=${archlibdir}
+
 FRC:
 
 # ==================== Cleaning up and miscellanea ====================
@@ -744,6 +781,7 @@ mostlyclean: FRC
         (cd lwlib;    $(MAKE) $(MFLAGS) mostlyclean)
         (cd lib;      $(MAKE) $(MFLAGS) mostlyclean)
         (cd lib-src;  $(MAKE) $(MFLAGS) mostlyclean)
+        (cd nt;       $(MAKE) $(MFLAGS) mostlyclean)
         -(cd doc/emacs &&   $(MAKE) $(MFLAGS) mostlyclean)
         -(cd doc/misc &&   $(MAKE) $(MFLAGS) mostlyclean)
         -(cd doc/lispref &&   $(MAKE) $(MFLAGS) mostlyclean)
@@ -765,6 +803,7 @@ clean: FRC
         (cd lwlib;    $(MAKE) $(MFLAGS) clean)
         (cd lib;      $(MAKE) $(MFLAGS) clean)
         (cd lib-src;  $(MAKE) $(MFLAGS) clean)
+        (cd nt;       $(MAKE) $(MFLAGS) clean)
         -(cd doc/emacs &&   $(MAKE) $(MFLAGS) clean)
         -(cd doc/misc &&   $(MAKE) $(MFLAGS) clean)
         -(cd doc/lispref &&   $(MAKE) $(MFLAGS) clean)
@@ -791,6 +830,7 @@ distclean: FRC
         (cd lwlib;    $(MAKE) $(MFLAGS) distclean)
         (cd lib;      $(MAKE) $(MFLAGS) distclean)
         (cd lib-src;  $(MAKE) $(MFLAGS) distclean)
+        (cd nt;       $(MAKE) $(MFLAGS) distclean)
         (cd doc/emacs &&    $(MAKE) $(MFLAGS) distclean)
         (cd doc/misc &&    $(MAKE) $(MFLAGS) distclean)
         (cd doc/lispref &&    $(MAKE) $(MFLAGS) distclean)
@@ -809,6 +849,7 @@ bootstrap-clean: FRC
         (cd lwlib;    $(MAKE) $(MFLAGS) maintainer-clean)
         (cd lib;      $(MAKE) $(MFLAGS) maintainer-clean)
         (cd lib-src;  $(MAKE) $(MFLAGS) maintainer-clean)
+        (cd nt;       $(MAKE) $(MFLAGS) maintainer-clean)
         -(cd doc/emacs &&   $(MAKE) $(MFLAGS) maintainer-clean)
         -(cd doc/misc &&   $(MAKE) $(MFLAGS) maintainer-clean)
         -(cd doc/lispref &&   $(MAKE) $(MFLAGS) maintainer-clean)
diff --git a/configure.ac b/configure.ac
index a52e25249c6..54f499e2126 100644
--- a/configure.ac
+++ b/configure.ac
@@ -192,7 +192,7 @@ OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
 OPTION_DEFAULT_OFF([ns],[use NeXTstep (Cocoa or GNUstep) windowing system])
-OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI])
+OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
 
 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
@@ -376,7 +376,7 @@ AC_ARG_ENABLE(gtk-deprecation-warnings,
 ## Make sure CDPATH doesn't affect cd (in case PWD is relative).
 unset CDPATH
 case "${srcdir}" in
-  /* ) ;;
+  [[\\/]]* | ?:[[\\/]]*) ;;
   . )
     ## We may be able to use the $PWD environment variable to make this
     ## absolute.  But sometimes PWD is inaccurate.
@@ -554,6 +554,11 @@ case "${canonical}" in
   i[3456]86-*-* )
     case "${canonical}" in
       *-darwin* )               opsys=darwin ;;
+      *-mingw32 )               
+                opsys=mingw32
+                # MinGW overrides and adds some system headers in nt/inc.
+                GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
+                ;;
       *-sysv4.2uw* )            opsys=unixware ;;
       *-sysv5uw* )              opsys=unixware ;;
       *-sysv5OpenUNIX* )        opsys=unixware ;;
@@ -602,6 +607,11 @@ else
   test "x$NON_GCC_TEST_OPTIONS" != x && CC="$CC $NON_GCC_TEST_OPTIONS"
 fi
 
+dnl This is used in lib/Makefile.am to use nt/gnulib.mk, the
+dnl alternative to lib/gnulib.mk, so as to avoid generating header files
+dnl that clash with MinGW.
+AM_CONDITIONAL([BUILDING_FOR_WINDOWSNT], [test "x$opsys" = "xmingw32"])
+
 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
 # as we don't use them.
 AC_DEFUN([gl_FCNTL_O_FLAGS])
@@ -635,6 +645,9 @@ if test "$ac_test_CFLAGS" != set; then
     if test $emacs_cv_prog_cc_g3 != yes; then
       CFLAGS=$emacs_save_CFLAGS
     fi
+    if test $opsys = mingw32; then
+      CFLAGS="$CFLAGS -gdwarf-2"
+    fi
   fi
 
   case $CFLAGS in
@@ -852,6 +865,16 @@ fi
 AC_SUBST(LN_S_FILEONLY)
 
 
+dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
+dnl doesn't support links to directories, as in "ln file dir".  But that
+dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
+dnl executables at "make install" time.
+dnl See http://lists.gnu.org/archive/html/emacs-devel/2013-04/msg00475.html
+dnl for more details.
+if test "$opsys" = "mingw32"; then
+  LN_S="ln"
+fi
+
 AC_PATH_PROG(INSTALL_INFO, install-info, :,
   $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
 dnl Don't use GZIP, which is used by gzip for additional parameters.
@@ -957,7 +980,6 @@ AC_SUBST(CANNOT_DUMP)
 UNEXEC_OBJ=unexelf.o
 case "$opsys" in
   # MSDOS uses unexcoff.o
-  # MSWindows uses unexw32.o
   aix4-2)
    UNEXEC_OBJ=unexaix.o
    ;;
@@ -970,6 +992,9 @@ case "$opsys" in
   hpux10-20 | hpux11)
    UNEXEC_OBJ=unexhp9k800.o
    ;;
+  mingw32)
+   UNEXEC_OBJ=unexw32.o
+   ;;
   sol2-10)
    # Use the Solaris dldump() function, called from unexsol.c, to dump
    # emacs, instead of the generic ELF dump code found in unexelf.c.
@@ -1064,6 +1089,7 @@ C_SWITCH_SYSTEM=
 ## additional optimization.  --nils@exp-math.uni-essen.de
 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
   C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
+test "$opsys" = "mingw32" && C_SWITCH_SYSTEM="-mtune=pentium4"
 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
 ## It is redundant in glibc2, since we define _GNU_SOURCE.
 AC_SUBST(C_SWITCH_SYSTEM)
@@ -1083,8 +1109,8 @@ case "$opsys" in
   ## Motif needs -lgen.
   unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
 esac
-AC_SUBST(LIBS_SYSTEM)
 
+AC_SUBST(LIBS_SYSTEM)
 
 ### Make sure subsequent tests use flags consistent with the build flags.
 
@@ -1122,6 +1148,10 @@ case $opsys in
     ;;
   hpux10-20 | hpux11 )
     ;;
+  mingw32 )
+    LIB_MATH=
+    SYSTEM_TYPE=windows-nt
+    ;;
   dnl NB this may be adjusted below.
   netbsd | openbsd )
     SYSTEM_TYPE=berkeley-unix
@@ -1197,11 +1227,15 @@ AC_DEFUN([PKG_CHECK_MODULES], [
   fi
 ])
 
-
 if test "${with_sound}" != "no"; then
-  # Sound support for GNU/Linux and the free BSDs.
-  AC_CHECK_HEADERS(machine/soundcard.h sys/soundcard.h soundcard.h,
-    have_sound_header=yes)
+  # Sound support for GNU/Linux, the free BSDs, and MinGW.
+  AC_CHECK_HEADERS(machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h,
+    have_sound_header=yes, [], [
+    #ifdef __MINGW32__
+    #define WIN32_LEAN_AND_MEAN
+    #include <windows.h>
+    #endif
+    ])
   # Emulation library used on NetBSD.
   AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
   AC_SUBST(LIBSOUND)
@@ -1241,7 +1275,7 @@ if test "${with_sound}" != "no"; then
   if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
      case "$opsys" in
        dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
-       gnu-linux|freebsd|netbsd)
+       gnu-linux|freebsd|netbsd|mingw32)
          AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
          ;;
      esac
@@ -1563,31 +1597,98 @@ AC_SUBST(NS_OBJC_OBJ)
 HAVE_W32=no
 W32_OBJ=
 W32_LIBS=
-W32_RES=
+EMACSRES=
+CLIENTRES=
+CLIENTW=
 W32_RES_LINK=
+EMACS_MANIFEST=
 if test "${with_w32}" != no; then
-  if test "${opsys}" != "cygwin"; then
-    AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin.])
+  case "${opsys}" in
+    cygwin) 
+      AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
+             [AC_MSG_ERROR([`--with-w32' was specified, but windows.h
+                   cannot be found.])]) 
+    ;;
+    mingw32)
+    ## Using --with-w32 with MinGW is a no-op, but we allow it.
+    ;;
+    *) 
+      AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
+    ;;
+  esac
+fi
+
+if test "${opsys}" = "mingw32"; then
+  AC_MSG_CHECKING([whether Windows API headers are recent enough])
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+     #include <windows.h>
+     #include <usp10.h>]],
+   [[void test(PIMAGE_NT_HEADERS pHeader)
+     {PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader);}]])],
+   [emacs_cv_w32api=yes
+    HAVE_W32=yes], 
+   emacs_cv_w32api=no)
+  AC_MSG_RESULT($emacs_cv_w32api)
+  if test "${emacs_cv_w32api}" = "no"; then
+    AC_MSG_ERROR([the Windows API headers are too old to support this build.])
   fi
-  AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
-                  [AC_MSG_ERROR([`--with-w32' was specified, but windows.h
-                  cannot be found.])])
+fi
+
+FIRSTFILE_OBJ=
+NTDIR=
+LIBS_ECLIENT=
+LIB_WSOCK32=
+NTLIB=
+CM_OBJ="cm.o"
+XARGS_LIMIT=
+if test "${HAVE_W32}" = "yes"; then
   AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
   AC_CHECK_TOOL(WINDRES, [windres],
                 [AC_MSG_ERROR([No resource compiler found.])])
   W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
   W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o"
-  W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lgdi32 -lole32 -lcomdlg32"
-  W32_LIBS="$W32_LIBS -lusp10 -lcomctl32 -lwinspool"
-  W32_RES="emacs.res"
-  # Tell the linker that emacs.res is an object (which we compile from
-  # the rc file), not a linker script.
-  W32_RES_LINK="-Wl,emacs.res"
+  EMACSRES="emacs.res"
+  case "$canonical" in
+    x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
+    *) EMACS_MANIFEST="emacs-x86.manifest" ;;
+  esac
+  if test "${opsys}" = "cygwin"; then
+    W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lgdi32 -lole32 -lcomdlg32"
+    W32_LIBS="$W32_LIBS -lusp10 -lcomctl32 -lwinspool"
+    # Tell the linker that emacs.res is an object (which we compile from
+    # the rc file), not a linker script.
+    W32_RES_LINK="-Wl,emacs.res"
+  else
+    W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
+    W32_OBJ="$W32_OBJ w32notify.o"
+    W32_LIBS="$W32_LIBS -lwinmm -lgdi32 -lcomdlg32"
+    W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32 -lusp10"
+    W32_RES_LINK="\$(EMACSRES)"
+    CLIENTRES="emacsclient.res"
+    CLIENTW="emacsclientw\$(EXEEXT)"
+    FIRSTFILE_OBJ=firstfile.o
+    NTDIR=nt
+    CM_OBJ=
+    LIBS_ECLIENT="-lcomctl32"
+    LIB_WSOCK32="-lwsock32"
+    NTLIB="ntlib.$ac_objext"
+    XARGS_LIMIT="-s 10000"
+  fi
 fi
 AC_SUBST(W32_OBJ)
 AC_SUBST(W32_LIBS)
-AC_SUBST(W32_RES)
+AC_SUBST(EMACSRES)
+AC_SUBST(EMACS_MANIFEST)
+AC_SUBST(CLIENTRES)
+AC_SUBST(CLIENTW)
 AC_SUBST(W32_RES_LINK)
+AC_SUBST(FIRSTFILE_OBJ)
+AC_SUBST(NTDIR)
+AC_SUBST(CM_OBJ)
+AC_SUBST(LIBS_ECLIENT)
+AC_SUBST(LIB_WSOCK32)
+AC_SUBST(NTLIB)
+AC_SUBST(XARGS_LIMIT)
 
 if test "${HAVE_W32}" = "yes"; then
   window_system=w32
@@ -1912,7 +2013,7 @@ fi
 
 ### Use -lrsvg-2 if available, unless `--with-rsvg=no' is specified.
 HAVE_RSVG=no
-if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes"; then
+if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
   if test "${with_rsvg}" != "no"; then
     RSVG_REQUIRED=2.11.0
     RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
@@ -1955,43 +2056,45 @@ HAVE_GTK=no
 GTK_OBJ=
 check_gtk2=no
 gtk3_pkg_errors=
-if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
-  GLIB_REQUIRED=2.28
-  GTK_REQUIRED=3.0
-  GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
-
-  dnl Checks for libraries.
-  PKG_CHECK_MODULES(GTK, $GTK_MODULES, pkg_check_gtk=yes, pkg_check_gtk=no)
-  if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
-     AC_MSG_ERROR($GTK_PKG_ERRORS)
-  fi
-  if test "$pkg_check_gtk" = "yes"; then
-     AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
-     GTK_OBJ=emacsgtkfixed.o
-     term_header=gtkutil.h
-     USE_GTK_TOOLKIT="GTK3"
-     if test "x$ac_enable_gtk_deprecation_warnings" = x; then
-         GTK_CFLAGS="$GTK_CFLAGS -DGDK_DISABLE_DEPRECATION_WARNINGS"
-     fi
-  else
-     check_gtk2=yes
-     gtk3_pkg_errors="$GTK_PKG_ERRORS "
+if test "${opsys}" != "mingw32"; then
+  if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
+    GLIB_REQUIRED=2.28
+    GTK_REQUIRED=3.0
+    GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
+
+    dnl Checks for libraries.
+    PKG_CHECK_MODULES(GTK, $GTK_MODULES, pkg_check_gtk=yes, pkg_check_gtk=no)
+    if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
+       AC_MSG_ERROR($GTK_PKG_ERRORS)
+    fi
+    if test "$pkg_check_gtk" = "yes"; then
+       AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
+       GTK_OBJ=emacsgtkfixed.o
+       term_header=gtkutil.h
+       USE_GTK_TOOLKIT="GTK3"
+       if test "x$ac_enable_gtk_deprecation_warnings" = x; then
+          GTK_CFLAGS="$GTK_CFLAGS -DGDK_DISABLE_DEPRECATION_WARNINGS"
+       fi
+    else
+       check_gtk2=yes
+       gtk3_pkg_errors="$GTK_PKG_ERRORS "
+    fi
   fi
-fi
 
-if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
-  GLIB_REQUIRED=2.10
-  GTK_REQUIRED=2.10
-  GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
+  if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
+    GLIB_REQUIRED=2.10
+    GTK_REQUIRED=2.10
+    GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
 
-  dnl Checks for libraries.
-  PKG_CHECK_MODULES(GTK, $GTK_MODULES, pkg_check_gtk=yes, pkg_check_gtk=no)
-  if test "$pkg_check_gtk" = "no" &&
-     { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
-  then
-    AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
+    dnl Checks for libraries.
+    PKG_CHECK_MODULES(GTK, $GTK_MODULES, pkg_check_gtk=yes, pkg_check_gtk=no)
+    if test "$pkg_check_gtk" = "no" &&
+       { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
+    then
+      AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
+    fi
+    test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
   fi
-  test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
 fi
 
 if test x"$pkg_check_gtk" = xyes; then
@@ -2161,6 +2264,8 @@ if test "${with_gnutls}" = "yes" ; then
     AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
   fi
 
+  OLD_CFLAGS=$CFLAGS
+  OLD_LIBS=$LIBS
   CFLAGS="$CFLAGS $LIBGNUTLS_CFLAGS"
   LIBS="$LIBGNUTLS_LIBS $LIBS"
   AC_CHECK_FUNCS(gnutls_certificate_set_verify_function, HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY=yes)
@@ -2168,6 +2273,13 @@ if test "${with_gnutls}" = "yes" ; then
   if test "${HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY}" = "yes"; then
     AC_DEFINE(HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY, 1, [Define if using GnuTLS certificate verification callbacks.])
   fi
+
+  # Windows loads GnuTLS dynamically
+  if test "${opsys}" = "mingw32"; then
+    CFLAGS=$OLD_CFLAGS
+    LIBS=$OLD_LIBS
+    LIBGNUTLS_LIBS=
+  fi
 fi
 
 AC_SUBST(LIBGNUTLS_LIBS)
@@ -2283,6 +2395,9 @@ case $opsys in
   hpux* | aix4-2 )
     test "X$ac_cv_lib_Xmu_XmuConvertStandardSelection" != "Xyes" && LIBXMU=
     ;;
+  mingw32 )
+    LIBXMU=
+    ;;
 esac
 AC_SUBST(LIBXMU)
 
@@ -2541,10 +2656,10 @@ AC_SUBST(M17N_FLT_CFLAGS)
 AC_SUBST(M17N_FLT_LIBS)
 
 ### Use -lXpm if available, unless `--with-xpm=no'.
+### mingw32 doesn't use -lXpm, since it loads the library dynamically.
 HAVE_XPM=no
 LIBXPM=
-
-if test "${HAVE_W32}" = "yes"; then
+if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
   if test "${with_xpm}" != "no"; then
     SAVE_CPPFLAGS="$CPPFLAGS"
     SAVE_LDFLAGS="$LDFLAGS"
@@ -2605,19 +2720,33 @@ no_return_alloc_pixels
   fi
 fi
 
+### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
+### slightly different requirements wrt image libraries (it doesn't
+### use -lXpm because it loads the xpm shared library dynamically at
+### run time).
+if test "${opsys}" = "mingw32"; then
+  if test "${with_xpm}" != "no"; then
+    AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
+#define FOR_MSW 1])
+  fi
+
+  if test "${HAVE_XPM}" = "yes"; then
+    AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
+  fi
+fi
+
 AC_SUBST(LIBXPM)
 
 ### Use -ljpeg if available, unless `--with-jpeg=no'.
+### mingw32 doesn't use -ljpeg, since it loads the library dynamically.
 HAVE_JPEG=no
 LIBJPEG=
-if test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
+if test "${opsys}" = "mingw32"; then
   if test "${with_jpeg}" != "no"; then
     dnl Checking for jpeglib.h can lose because of a redefinition of
-    dnl  HAVE_STDLIB_H.
-    AC_CHECK_HEADER(jerror.h,
-      [AC_CHECK_LIB(jpeg, jpeg_destroy_compress, HAVE_JPEG=yes)])
+    dnl HAVE_STDLIB_H.
+    AC_CHECK_HEADER(jerror.h, HAVE_JPEG=yes, HAVE_JPEG=no)
   fi
-
   AH_TEMPLATE(HAVE_JPEG, [Define to 1 if you have the jpeg library (-ljpeg).])dnl
   if test "${HAVE_JPEG}" = "yes"; then
     AC_DEFINE(HAVE_JPEG)
@@ -2629,6 +2758,25 @@ if test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
         [AC_MSG_WARN([libjpeg found, but not version 6b or later])
         HAVE_JPEG=no])
   fi
+elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
+  if test "${with_jpeg}" != "no"; then
+    dnl Checking for jpeglib.h can lose because of a redefinition of
+    dnl  HAVE_STDLIB_H.
+    AC_CHECK_HEADER(jerror.h,
+      [AC_CHECK_LIB(jpeg, jpeg_destroy_compress, HAVE_JPEG=yes)])
+  fi
+
+  AH_TEMPLATE(HAVE_JPEG, [Define to 1 if you have the jpeg library (-ljpeg).])dnl
+  if test "${HAVE_JPEG}" = "yes"; then
+    AC_DEFINE(HAVE_JPEG)
+    AC_EGREP_CPP([version= *(6[2-9]|[7-9][0-9])],
+        [#include <jpeglib.h>
+         version=JPEG_LIB_VERSION
+],
+        [AC_DEFINE(HAVE_JPEG)],
+        [AC_MSG_WARN([libjpeg found, but not version 6b or later])
+        HAVE_JPEG=no])
+  fi
   if test "${HAVE_JPEG}" = "yes"; then
     LIBJPEG=-ljpeg
   fi
@@ -2636,9 +2784,30 @@ fi
 AC_SUBST(LIBJPEG)
 
 ### Use -lpng if available, unless `--with-png=no'.
+### mingw32 doesn't use -lpng, since it loads the library dynamically.
 HAVE_PNG=no
 LIBPNG=
-if test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
+if test "${opsys}" = "mingw32"; then
+  if test "${with_png}" != "no"; then
+    AC_CHECK_HEADER(png.h, HAVE_PNG=yes, HAVE_PNG=no)
+  fi
+  if test "${HAVE_PNG}" = "yes"; then
+    AC_DEFINE(HAVE_PNG, 1, [Define to 1 if you have the png library (-lpng).])
+
+    AC_CHECK_DECL(png_longjmp,
+      [],
+      [AC_DEFINE(PNG_DEPSTRUCT, [],
+         [Define to empty to suppress deprecation warnings when building
+          with --enable-gcc-warnings and with libpng versions before 1.5,
+          which lack png_longjmp.])],
+      [[#ifdef HAVE_LIBPNG_PNG_H
+        # include <libpng/png.h>
+        #else
+        # include <png.h>
+        #endif
+      ]])
+  fi
+elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
   if test "${with_png}" != "no"; then
     # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
     # in /usr/include/libpng.
@@ -2669,9 +2838,17 @@ fi
 AC_SUBST(LIBPNG)
 
 ### Use -ltiff if available, unless `--with-tiff=no'.
+### mingw32 doesn't use -ltiff, since it loads the library dynamically.
 HAVE_TIFF=no
 LIBTIFF=
-if test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
+if test "${opsys}" = "mingw32"; then
+  if test "${with_tiff}" != "no"; then
+    AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
+  fi
+  if test "${HAVE_TIFF}" = "yes"; then
+    AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
+  fi
+elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
   if test "${with_tiff}" != "no"; then
     AC_CHECK_HEADER(tiffio.h,
       [tifflibs="-lz -lm"
@@ -2689,9 +2866,17 @@ fi
 AC_SUBST(LIBTIFF)
 
 ### Use -lgif or -lungif if available, unless `--with-gif=no'.
+### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
 HAVE_GIF=no
 LIBGIF=
-if test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
+if test "${opsys}" = "mingw32"; then
+  if test "${with_gif}" != "no"; then
+    AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
+  fi
+  if test "${HAVE_GIF}" = "yes"; then
+    AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
+  fi
+elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
         || test "${HAVE_W32}" = "yes"; then
   AC_CHECK_HEADER(gif_lib.h,
 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
@@ -2847,13 +3032,18 @@ fi
 
 
 ### Use libxml (-lxml2) if available
+### mingw32 doesn't use -lxml2, since it loads the library dynamically.
 HAVE_LIBXML2=no
 if test "${with_xml2}" != "no"; then
   ### I'm not sure what the version number should be, so I just guessed.
   PKG_CHECK_MODULES(LIBXML2, libxml-2.0 > 2.6.17, HAVE_LIBXML2=yes, HAVE_LIBXML2=no)
   if test "${HAVE_LIBXML2}" = "yes"; then
-    LIBS="$LIBXML2_LIBS $LIBS"
-    AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no)
+    if test "${opsys}" != "mingw32"; then
+      LIBS="$LIBXML2_LIBS $LIBS"
+      AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no)
+    else
+      LIBXML2_LIBS=""
+    fi
     if test "${HAVE_LIBXML2}" = "yes"; then
       AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
     else
@@ -2866,6 +3056,10 @@ AC_SUBST(LIBXML2_LIBS)
 AC_SUBST(LIBXML2_CFLAGS)
 
 # If netdb.h doesn't declare h_errno, we must declare it by hand.
+# On MinGW, that is provided by nt/inc/sys/socket.h and w32.c.
+if test "${opsys}" = "mingw32"; then
+  emacs_cv_netdb_declares_h_errno=yes
+fi
 AC_CACHE_CHECK(whether netdb declares h_errno,
                emacs_cv_netdb_declares_h_errno,
 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]],
@@ -2876,8 +3070,10 @@ if test $emacs_cv_netdb_declares_h_errno = yes; then
 fi
 
 # sqrt and other floating-point functions such as fmod and frexp
-# are found in -lm on most systems.
-AC_CHECK_LIB(m, sqrt)
+# are found in -lm on most systems, but mingw32 doesn't use -lm.
+if test "${opsys}" != "mingw32"; then
+  AC_CHECK_LIB(m, sqrt)
+fi
 
 # Check for mail-locking functions in a "mail" library.  Probably this should
 # have the same check as for liblockfile below.
@@ -2941,6 +3137,9 @@ case "$opsys" in
       test $ac_cv_header_maillock_h = yes && mail_lock=no
     fi
     ;;
+
+  mingw32)
+    mail_lock="none-needed" ;;
 esac
 
 BLESSMAIL_TARGET=
@@ -2949,6 +3148,8 @@ case "$mail_lock" in
 
   lockf) AC_DEFINE(MAIL_USE_LOCKF, 1, [Define if the mailer uses lockf to interlock the mail spool.]) ;;
 
+  none-needed) ;;
+
   *) BLESSMAIL_TARGET="need-blessmail" ;;
 esac
 AC_SUBST(BLESSMAIL_TARGET)
@@ -3020,25 +3221,29 @@ AC_DEFUN([tputs_link_source], [
           return 0;
        }]])
 ])
-# Maybe curses should be tried earlier?
-# See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9736#35
-for tputs_library in '' tinfo ncurses terminfo termcap curses; do
-  OLIBS=$LIBS
-  if test -z "$tputs_library"; then
-    LIBS_TERMCAP=
-    msg='none required'
-  else
-    LIBS_TERMCAP=-l$tputs_library
-    msg=$LIBS_TERMCAP
-    LIBS="$LIBS_TERMCAP $LIBS"
-  fi
-  AC_RUN_IFELSE([tputs_link_source], [], [msg=no],
-    [AC_LINK_IFELSE([tputs_link_source], [], [msg=no])])
-  LIBS=$OLIBS
-  if test "X$msg" != Xno; then
-    break
-  fi
-done
+if test "${opsys}" = "mingw32"; then
+  msg='none required'
+else
+  # Maybe curses should be tried earlier?
+  # See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9736#35
+  for tputs_library in '' tinfo ncurses terminfo termcap curses; do
+    OLIBS=$LIBS
+    if test -z "$tputs_library"; then
+      LIBS_TERMCAP=
+      msg='none required'
+    else
+      LIBS_TERMCAP=-l$tputs_library
+      msg=$LIBS_TERMCAP
+      LIBS="$LIBS_TERMCAP $LIBS"
+    fi
+    AC_RUN_IFELSE([tputs_link_source], [], [msg=no],
+      [AC_LINK_IFELSE([tputs_link_source], [], [msg=no])])
+    LIBS=$OLIBS
+    if test "X$msg" != Xno; then
+      break
+    fi
+  done
+fi
 AC_MSG_RESULT([$msg])
 if test "X$msg" = Xno; then
   AC_MSG_ERROR([The required function `tputs' was not found in any library.
@@ -3084,6 +3289,11 @@ fail;
     fi
     ;;
 
+  mingw32)
+    TERMINFO=no
+    LIBS_TERMCAP=
+    ;;
+
   netbsd)
     if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
       TERMINFO=no
@@ -3373,11 +3583,14 @@ dnl    AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetatt
 dnl fi
 
 dnl Turned on June 1996 supposing nobody will mind it.
-AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
-  in the full name stands for the login id.])
+dnl MinGW emulates passwd database, so this feature doesn't make sense there.
+if test "${opsys}" != "mingw32"; then
+   AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
+     in the full name stands for the login id.])
+fi
 
-dnl Every platform that uses configure (ie every non-MS platform)
-dnl supports this.  There is a create-lockfiles option you can
+dnl Every platform that uses configure supports this.
+dnl There is a create-lockfiles option you can
 dnl customize if you do not want the lock files to be written.
 dnl So it is not clear that this #define still needs to exist.
 AC_DEFINE(CLASH_DETECTION, 1, [Define if you want lock files to be written,
@@ -3387,7 +3600,9 @@ AC_DEFINE(CLASH_DETECTION, 1, [Define if you want lock files to be written,
 dnl Everybody supports this, except MS.
 dnl Seems like the kind of thing we should be testing for, though.
 ## Note: PTYs are broken on darwin <6.  Use at your own risk.
-AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
+if test "${opsys}" != "mingw32"; then
+  AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
+fi
 
 dnl Everybody supports this, except MS-DOS.
 dnl Seems like the kind of thing we should be testing for, though.
@@ -3397,10 +3612,20 @@ AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
 
 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
 
-AC_DEFINE(NULL_DEVICE, ["/dev/null"], [Name of the file to open to get
+AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
   a null file, or a data sink.])
+if test "${opsys}" = "mingw32"; then
+  AC_DEFINE(NULL_DEVICE, ["NUL:"])
+else
+  AC_DEFINE(NULL_DEVICE, ["/dev/null"])
+fi
 
-AC_DEFINE(SEPCHAR, [':'], [Character that separates PATH elements.])
+AH_TEMPLATE(SEPCHAR, [Character that separates PATH elements.])
+if test "${opsys}" = "mingw32"; then
+  AC_DEFINE(SEPCHAR, [';'])
+else
+  AC_DEFINE(SEPCHAR, [':'])
+fi
 
 dnl Everybody supports this, except MS-DOS.
 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
@@ -3411,19 +3636,28 @@ AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
 AC_DEFINE(DIRECTORY_SEP, ['/'],
   [Character that separates directories in a file name.])
 
-dnl Only used on MS platforms.
 AH_TEMPLATE(DEVICE_SEP, [Character that separates a device in a file name.])
+if test "${opsys}" = "mingw32"; then
+  dnl Only used on MS platforms.
+  AC_DEFINE(DEVICE_SEP, ':')
+  AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == DEVICE_SEP)],
+    [Returns true if character is a device separator.])
 
-AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
-  [Returns true if character is a device separator.])
+  AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
+    [Returns true if character is a directory separator.])
 
-AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
-  [Returns true if character is a directory separator.])
+  AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
+    [Returns true if character is any form of separator.])
+else
+  AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
+    [Returns true if character is a device separator.])
 
-dnl On MS, this also accepts IS_DEVICE_SEP.
-AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
-  [Returns true if character is any form of separator.])
+  AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
+    [Returns true if character is a directory separator.])
 
+  AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
+    [Returns true if character is any form of separator.])
+fi
 
 AH_TEMPLATE(NO_EDITRES, [Define if XEditRes should not be used.])
 
@@ -3812,10 +4046,14 @@ else
   esac
 fi                              dnl GCC?
 
+dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
   [AC_LINK_IFELSE(
      [AC_LANG_PROGRAM(
        [[#include <setjmp.h>
+         #ifdef __MINGW32__
+         # define _longjmp longjmp
+         #endif
        ]],
        [[jmp_buf j;
          if (! _setjmp (j))
@@ -3910,6 +4148,14 @@ case $opsys in
     AC_DEFINE(IRIX6_5, [], [Define if the system is IRIX.])
     ;;
 
+  mingw32)
+    AC_DEFINE(DOS_NT, [])
+    AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
+    if test "x$ac_enable_checking" != "x" ; then
+      AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
+    fi
+    ;;
+
   sol2*)
     AC_DEFINE(USG, [])
     AC_DEFINE(USG5, [])
@@ -3931,6 +4177,10 @@ AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
        emacs_cv_usable_FIONREAD=no
        ;;
 
+     mingw32)
+       emacs_cv_usable_FIONREAD=yes
+       ;;
+
      *)
        AC_COMPILE_IFELSE(
          [AC_LANG_PROGRAM([[#include <sys/types.h>
@@ -4071,6 +4321,12 @@ AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
 AH_TEMPLATE(config_opsysfile, [Some platforms that do not use configure
   define this to include extra configuration information.])
 
+case $opsys in
+  mingw32)
+    AC_DEFINE(config_opsysfile, <ms-w32.h>, [])
+    ;;
+esac
+
 XMENU_OBJ=
 XOBJ=
 FONT_OBJ=
@@ -4131,12 +4387,14 @@ case "$USE_X_TOOLKIT" in
 esac
 AC_SUBST(TOOLKIT_LIBW)
 
-if test "$USE_X_TOOLKIT" = "none"; then
-  LIBXT_OTHER="\$(LIBXSM)"
-  OLDXMENU_TARGET="really-oldXMenu"
-else
-  LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
-  OLDXMENU_TARGET="really-lwlib"
+if test "${opsys}" != "mingw32"; then
+  if test "$USE_X_TOOLKIT" = "none"; then
+    LIBXT_OTHER="\$(LIBXSM)"
+    OLDXMENU_TARGET="really-oldXMenu"
+  else
+    LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
+    OLDXMENU_TARGET="really-lwlib"
+  fi
 fi
 AC_SUBST(LIBXT_OTHER)
 
@@ -4210,6 +4468,10 @@ if test "$opsys" = "cygwin"; then
   ## Cygwin differs because of its unexec().
   PRE_ALLOC_OBJ=
   POST_ALLOC_OBJ=lastfile.o
+elif test "$opsys" = "mingw32"; then
+  CYGWIN_OBJ=
+  PRE_ALLOC_OBJ=
+  POST_ALLOC_OBJ=lastfile.o
 else
   CYGWIN_OBJ=
   PRE_ALLOC_OBJ=lastfile.o
@@ -4237,6 +4499,12 @@ gl_INIT
 CFLAGS=$SAVE_CFLAGS
 LIBS=$SAVE_LIBS
 
+if test "${opsys}" = "mingw32"; then
+  CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I $srcdir/nt/inc"
+  # Remove unneeded switches from the value of CC that goes to Makefiles
+  CC=`echo $CC | sed -e "s,$GCC_TEST_OPTIONS,,"`
+fi
+
 case "$opsys" in
   aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
 
@@ -4273,6 +4541,16 @@ case "$opsys" in
   ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
   gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
 
+  mingw32)
+   ## MinGW64 does not prepend an underscore to symbols, so we must
+   ## pass a different -entry switch to linker.  FIXME: It is better
+   ## to make the entry points the same by changing unexw32.c.
+   case "$canonical" in
+     x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,_start -Wl,-Map,./temacs.map" ;;
+     *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
+   esac
+   ;;
+
   openbsd) LD_SWITCH_SYSTEM_TEMACS='-nopie' ;;
 
   *) LD_SWITCH_SYSTEM_TEMACS= ;;
@@ -4287,6 +4565,24 @@ fi
 
 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
 
+## MinGW-specific post-link processing of temacs.
+TEMACS_POST_LINK=":"
+ADDSECTION=
+EMACS_HEAPSIZE=
+if test "${opsys}" = "mingw32"; then
+  TEMACS_POST_LINK="\$(MINGW_TEMACS_POST_LINK)"
+  ADDSECTION="../nt/addsection\$(EXEEXT)"
+  ## Preload heap size of temacs.exe in MB.
+  case "$canonical" in
+    x86_64-*-*) EMACS_HEAPSIZE=42 ;;
+    *) EMACS_HEAPSIZE=27 ;;
+  esac
+fi
+
+AC_SUBST(ADDSECTION)
+AC_SUBST(TEMACS_POST_LINK)
+AC_SUBST(EMACS_HEAPSIZE)
+
 ## Common for all window systems
 if test "$window_system" != "none"; then
   AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
@@ -4445,12 +4741,12 @@ dnl This will work, but you get a config.status that is not quite right
 dnl (see http://lists.gnu.org/archive/html/bug-autoconf/2008-08/msg00028.html).
 dnl That doesn't have any obvious consequences for Emacs, but on the whole
 dnl it seems better to just live with the duplication.
-SUBDIR_MAKEFILES="lib/Makefile lib-src/Makefile oldXMenu/Makefile doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile leim/Makefile nextstep/Makefile"
+SUBDIR_MAKEFILES="lib/Makefile lib-src/Makefile oldXMenu/Makefile doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile leim/Makefile nextstep/Makefile nt/Makefile"
 
 AC_CONFIG_FILES([Makefile lib/Makefile lib-src/Makefile oldXMenu/Makefile \
        doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile \
        doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile \
-       leim/Makefile nextstep/Makefile])
+       leim/Makefile nextstep/Makefile nt/Makefile])
 
 dnl test/ is not present in release tarfiles.
 opt_makefile=test/automated/Makefile
@@ -4493,8 +4789,12 @@ dnl by configure.  This also explains the `move-if-change' test and
 dnl the use of force in the `epaths-force' rule in Makefile.in.
 AC_CONFIG_COMMANDS([epaths], [
 echo creating src/epaths.h
-${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
-], [GCC="$GCC" CPPFLAGS="$CPPFLAGS"])
+if test "${opsys}" = "mingw32"; then
+  ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
+else
+  ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
+fi
+], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
 
 AC_CONFIG_COMMANDS([gdbinit], [
 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
diff --git a/etc/ChangeLog b/etc/ChangeLog
index f4f17ac29cf..b516d1aef65 100644
--- a/etc/ChangeLog
+++ b/etc/ChangeLog
@@ -1,3 +1,7 @@
+2013-05-16  Eli Zaretskii  <eliz@gnu.org>
+
+        * NEWS: Advertise the MSYS build on MS-Windows.
+
 2013-05-15  Stefan Monnier  <monnier@iro.umontreal.ca>
 
         * .gitignore: Don't ignore DOC-* any more.
diff --git a/etc/NEWS b/etc/NEWS
index 5f238988820..fc0eaf33640 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -29,7 +29,15 @@ build time, like libacl on GNU/Linux.  To prevent this, use the
 configure option `--disable-acl'.
 
 ** The configure option --with-crt-dir has been removed.
-It is no longer needed, as the crt*.o files are no longer linked specially.
+It is no longer needed, as the crt*.o files are no longer linked
+specially.
+
+** Emacs for MS-Windows can now be built by running the configure script
+using the MSYS environment and MinGW development tools.
+This is from now on the preferred method of building Emacs on
+MS-Windows.  The Windows-specific configure.bat and makefile.w32-in
+files are deprecated.  See the file nt/INSTALL.MSYS for detailed
+instructions.
 
 
 * Startup Changes in Emacs 24.4
diff --git a/leim/ChangeLog b/leim/ChangeLog
index 64954ddad85..f86fb23eb5e 100644
--- a/leim/ChangeLog
+++ b/leim/ChangeLog
@@ -1,3 +1,7 @@
+2013-05-16  Eli Zaretskii  <eliz@gnu.org>
+
+        * Makefile.in (leim-list.el, check-declare): Use reveal-filename.
+
 2013-04-01  Paul Eggert  <eggert@cs.ucla.edu>
 
         Use UTF-8 for most files with non-ASCII characters (Bug#13936).
diff --git a/leim/Makefile.in b/leim/Makefile.in
index 0242244295e..a660d9b56e0 100644
--- a/leim/Makefile.in
+++ b/leim/Makefile.in
@@ -140,7 +140,7 @@ leim-list.el: ${TIT_MISC} ${srcdir}/leim-ext.el
             --eval "(update-leim-list-file \".\")" ; \
         else \
           ${RUN_EMACS} -l ${buildlisppath}/international/quail \
-            --eval "(update-leim-list-file \".\" \"${srcdir}\")" ; \
+            --eval "(update-leim-list-file \".\" (reveal-filename \"${srcdir}\"))" ; \
         fi
         sed -n '/^[^;]/ p' < ${srcdir}/leim-ext.el >> $@
 
@@ -199,4 +199,4 @@ extraclean: maintainer-clean
 
 check-declare:
         $(RUN_EMACS) -l $(buildlisppath)/emacs-lisp/check-declare \
-          --eval '(check-declare-directory "$(srcdir)")'
+          --eval '(check-declare-directory (reveal-filename "$(srcdir)"))'
diff --git a/lib-src/ChangeLog b/lib-src/ChangeLog
index 63108cae9a9..6ff653b7be6 100644
--- a/lib-src/ChangeLog
+++ b/lib-src/ChangeLog
@@ -1,3 +1,27 @@
+2013-05-16  Eli Zaretskii  <eliz@gnu.org>
+
+        * update-game-score.c [WINDOWSNT]: Include "ntlib.h".
+
+        * ntlib.h (sleep): Update prototype.
+        (geteuid): Add prototype.
+
+        * ntlib.c (sleep): Now returns an unsigned value.
+        (getgid): New function.
+
+        * Makefile.in (CLIENTW, LIB_WSOCK32, LIBS_ECLIENT, NTLIB)
+        (CLIENTRES, WINDRES, NTINC, NTDEPS): New variables.
+        (INSTALLABLES): Add $(CLIENTW).
+        (LIBS_MOVE): Use $(LIB_WSOCK32).
+        ($(DESTDIR)${archlibdir}): Use $(EXEEXT) on update-game-score.
+        (test-distrib${EXEEXT}): Use $(EXEEXT) on test-distrib.
+        (etags${EXEEXT}, ebrowse${EXEEXT}, ctags${EXEEXT})
+        (profile${EXEEXT}, make-docfile${EXEEXT}, movemail${EXEEXT})
+        (emacsclient${EXEEXT}, hexl${EXEEXT}, update-game-score${EXEEXT}):
+        Add $(NTLIB) to prerequisites.  Use $(EXEEXT).
+        (pop.o): Add pop.h to prerequisites.
+        (emacsclientw${EXEEXT}, ntlib.o): New targets.
+        (emacsclient.res): New target.
+
 2013-05-15  Stefan Monnier  <monnier@iro.umontreal.ca>
 
         * makefile.w32-in ($(DOC)): Use DOC rather than DOC-X.
diff --git a/lib-src/Makefile.in b/lib-src/Makefile.in
index 7069af9767a..e0acea867b7 100644
--- a/lib-src/Makefile.in
+++ b/lib-src/Makefile.in
@@ -113,8 +113,11 @@ MKDIR_P = @MKDIR_P@
 
 # ========================== Lists of Files ===========================
 
+# emacsclientw.exe for MinGW, empty otherwise
+CLIENTW = @CLIENTW@
+
 # Things that a user might actually run, which should be installed in bindir.
-INSTALLABLES = etags${EXEEXT} ctags${EXEEXT} emacsclient${EXEEXT} \
+INSTALLABLES = etags${EXEEXT} ctags${EXEEXT} emacsclient${EXEEXT} $(CLIENTW) \
                ebrowse${EXEEXT}
 
 INSTALLABLE_SCRIPTS = grep-changelog
@@ -163,10 +166,21 @@ LIBS_MAIL=@LIBS_MAIL@
 LIB_CLOCK_GETTIME = @LIB_CLOCK_GETTIME@
 ## empty or -lrt or -lposix4 if HAVE_FDATASYNC
 LIB_FDATASYNC = @LIB_FDATASYNC@
+## empty or -lwsock2 for MinGW
+LIB_WSOCK32=@LIB_WSOCK32@
 
 ## Extra libraries to use when linking movemail.
 LIBS_MOVE = $(LIBS_MAIL) $(KRB4LIB) $(DESLIB) $(KRB5LIB) $(CRYPTOLIB) \
-            $(COM_ERRLIB) $(LIBHESIOD) $(LIBRESOLV)
+            $(COM_ERRLIB) $(LIBHESIOD) $(LIBRESOLV) $(LIB_WSOCK32)
+
+## Extra libraries when linking emacsclient
+## (empty or -lcomctl32 for MinGW)
+LIBS_ECLIENT = @LIBS_ECLIENT@
+
+## Extra object files for linking for MinGW
+NTLIB = @NTLIB@
+CLIENTRES = @CLIENTRES@
+WINDRES = @WINDRES@
 
 ## Some systems define this to request special libraries.
 LIBS_SYSTEM = @LIBS_SYSTEM@
@@ -227,7 +241,7 @@ $(DESTDIR)${archlibdir}: all
         umask 022; ${MKDIR_P} $(DESTDIR)${gamedir}; \
         touch $(DESTDIR)${gamedir}/snake-scores; \
         touch $(DESTDIR)${gamedir}/tetris-scores
-        -if chown ${gameuser} $(DESTDIR)${archlibdir}/update-game-score && chmod u+s $(DESTDIR)${archlibdir}/update-game-score; then \
+        -if chown ${gameuser} $(DESTDIR)${archlibdir}/update-game-score${EXEEXT} && chmod u+s $(DESTDIR)${archlibdir}/update-game-score${EXEEXT}; then \
           chown ${gameuser} $(DESTDIR)${gamedir}; \
           chmod u=rwx,g=rwx,o=rx $(DESTDIR)${gamedir}; \
         fi
@@ -292,7 +306,7 @@ TAGS: etags${EXEEXT}
 ## distribute Emacs.  If they were clobbered, all the .elc files were
 ## clobbered too.
 test-distrib${EXEEXT}: ${srcdir}/test-distrib.c
-        $(CC) ${ALL_CFLAGS} -o test-distrib ${srcdir}/test-distrib.c
+        $(CC) ${ALL_CFLAGS} -o test-distrib${EXEEXT} ${srcdir}/test-distrib.c
         ./test-distrib ${srcdir}/testfile
 
 ../lib/libgnu.a: $(config_h)
@@ -302,47 +316,68 @@ regex.o: $(srcdir)/../src/regex.c $(srcdir)/../src/regex.h $(config_h)
         ${CC} -c ${CPP_CFLAGS} -DCONFIG_BROKETS -DINHIBIT_STRING_HEADER \
           ${srcdir}/../src/regex.c
 
-etags${EXEEXT}: ${srcdir}/etags.c regex.o $(config_h)
+etags${EXEEXT}: ${srcdir}/etags.c regex.o $(NTLIB) $(config_h)
         $(CC) ${ALL_CFLAGS} -DEMACS_NAME="\"GNU Emacs\"" \
           -DVERSION="\"${version}\"" ${srcdir}/etags.c \
-          regex.o $(LOADLIBES) -o etags
+          regex.o $(LOADLIBES) $(NTLIB) -o etags${EXEEXT}
 
-ebrowse${EXEEXT}: ${srcdir}/ebrowse.c ${srcdir}/../lib/min-max.h $(config_h)
+ebrowse${EXEEXT}: ${srcdir}/ebrowse.c ${srcdir}/../lib/min-max.h $(NTLIB) \
+                   $(config_h)
         $(CC) ${ALL_CFLAGS} -DVERSION="\"${version}\"" \
-          ${srcdir}/ebrowse.c $(LOADLIBES) -o ebrowse
+          ${srcdir}/ebrowse.c $(LOADLIBES) $(NTLIB) -o ebrowse${EXEEXT}
 
 ## We depend on etags to assure that parallel makes do not write two
 ## etags.o files on top of each other.
 ctags${EXEEXT}: etags${EXEEXT}
         $(CC) ${ALL_CFLAGS} -DCTAGS -DEMACS_NAME="\"GNU Emacs\"" \
           -DVERSION="\"${version}\"" ${srcdir}/etags.c \
-          regex.o $(LOADLIBES) -o ctags
+          regex.o $(LOADLIBES) $(NTLIB) -o ctags${EXEEXT}
 
-profile${EXEEXT}: ${srcdir}/profile.c $(config_h)
+profile${EXEEXT}: ${srcdir}/profile.c $(NTLIB) $(config_h)
         $(CC) ${ALL_CFLAGS} ${srcdir}/profile.c \
-          $(LOADLIBES) $(LIB_CLOCK_GETTIME) -o profile
+          $(LOADLIBES) $(NTLIB) $(LIB_CLOCK_GETTIME) -o profile${EXEEXT}
 
-make-docfile${EXEEXT}: ${srcdir}/make-docfile.c $(config_h)
-        $(CC) ${ALL_CFLAGS} ${srcdir}/make-docfile.c $(LOADLIBES) \
-          -o make-docfile
+make-docfile${EXEEXT}: ${srcdir}/make-docfile.c $(NTLIB) $(config_h)
+        $(CC) ${ALL_CFLAGS} ${srcdir}/make-docfile.c $(LOADLIBES) $(NTLIB) \
+          -o make-docfile${EXEEXT}
 
-movemail${EXEEXT}: ${srcdir}/movemail.c pop.o $(config_h)
+movemail${EXEEXT}: ${srcdir}/movemail.c pop.o $(NTLIB) $(config_h)
         $(CC) ${ALL_CFLAGS} ${MOVE_FLAGS} ${srcdir}/movemail.c pop.o \
-          $(LOADLIBES) $(LIBS_MOVE) -o movemail
+          $(LOADLIBES) $(NTLIB) $(LIBS_MOVE) -o movemail${EXEEXT}
 
-pop.o: ${srcdir}/pop.c ${srcdir}/../lib/min-max.h $(config_h)
+pop.o: ${srcdir}/pop.c ${srcdir}/pop.h ${srcdir}/../lib/min-max.h $(config_h)
         $(CC) -c ${CPP_CFLAGS} ${MOVE_FLAGS} ${srcdir}/pop.c
 
-emacsclient${EXEEXT}: ${srcdir}/emacsclient.c $(config_h)
+emacsclient${EXEEXT}: ${srcdir}/emacsclient.c $(NTLIB) $(config_h)
         $(CC) ${ALL_CFLAGS} ${srcdir}/emacsclient.c \
-           -DVERSION="\"${version}\"" \
-           $(LOADLIBES) $(LIB_FDATASYNC) -o emacsclient
+           -DVERSION="\"${version}\"" $(NTLIB) $(LOADLIBES) $(LIB_FDATASYNC) \
+           $(LIB_WSOCK32) $(LIBS_ECLIENT) -o emacsclient${EXEEXT}
+
+emacsclientw${EXEEXT}: ${srcdir}/emacsclient.c $(NTLIB) $(CLIENTRES) $(config_h)
+        $(CC) ${ALL_CFLAGS} $(CLIENTRES) -mwindows ${srcdir}/emacsclient.c \
+           -DVERSION="\"${version}\"" $(LOADLIBES) $(LIB_FDATASYNC) \
+           $(LIB_WSOCK32) $(LIBS_ECLIENT) -o emacsclientw${EXEEXT}
 
-hexl${EXEEXT}: ${srcdir}/hexl.c $(config_h)
-        $(CC) ${ALL_CFLAGS} ${srcdir}/hexl.c $(LOADLIBES) -o hexl
+NTINC = ${srcdir}/../nt/inc
+NTDEPS = $(NTINC)/ms-w32.h $(NTINC)/sys/stat.h $(NTINC)/inttypes.h \
+ $(NTINC)/stdint.h $(NTINC)/pwd.h $(NTINC)/sys/time.h $(NTINC)/stdbool.h \
+ $(NTINC)/sys/wait.h $(NTINC)/unistd.h $(NTINC)/sys/file.h $(NTINC)/netdb.h
 
-update-game-score${EXEEXT}: ${srcdir}/update-game-score.c $(config_h)
+# The dependency on $(NTDEPS) is a trick intended to cause recompile of
+# programs on MinGW whenever some private header in nt/inc is modified.
+ntlib.o: ${srcdir}/ntlib.c ${srcdir}/ntlib.h $(NTDEPS)
+        $(CC) -c ${CPP_CFLAGS} ${srcdir}/ntlib.c
+
+hexl${EXEEXT}: ${srcdir}/hexl.c $(NTLIB) $(config_h)
+        $(CC) ${ALL_CFLAGS} ${srcdir}/hexl.c $(LOADLIBES) -o hexl${EXEEXT}
+
+update-game-score${EXEEXT}: ${srcdir}/update-game-score.c $(NTLIB) $(config_h)
         $(CC) ${ALL_CFLAGS} -DHAVE_SHARED_GAME_DIR="\"$(gamedir)\"" \
-          ${srcdir}/update-game-score.c $(LOADLIBES) -o update-game-score
+          ${srcdir}/update-game-score.c $(LOADLIBES) $(NTLIB) \
+          -o update-game-score${EXEEXT}
+
+emacsclient.res: $(NTINC)/../emacsclient.rc
+        $(WINDRES) -O coff --include-dir=$(NTINC)/.. -o emacsclient.res \
+          $(NTINC)/../emacsclient.rc
 
 ## Makefile ends here.
diff --git a/lib-src/ntlib.c b/lib-src/ntlib.c
index 849abc2ede5..41b4e3a0cbc 100644
--- a/lib-src/ntlib.c
+++ b/lib-src/ntlib.c
@@ -49,10 +49,11 @@ struct timezone
 /* Emulate sleep...we could have done this with a define, but that
    would necessitate including windows.h in the files that used it.
    This is much easier.  */
-void
-sleep (unsigned long seconds)
+unsigned
+sleep (unsigned seconds)
 {
   Sleep (seconds * 1000);
+  return 0;
 }
 
 /* Get the current working directory.  */
@@ -138,6 +139,12 @@ getuid (void)
 }
 
 unsigned
+geteuid (void)
+{
+  return getuid ();
+}
+
+unsigned
 getgid (void)
 {
   return 0;
@@ -415,4 +422,3 @@ lstat (const char * path, struct stat * buf)
 {
   return stat (path, buf);
 }
-
diff --git a/lib-src/ntlib.h b/lib-src/ntlib.h
index 1b2f57f35e5..3e48d2997e0 100644
--- a/lib-src/ntlib.h
+++ b/lib-src/ntlib.h
@@ -16,7 +16,6 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
-
 #include <pwd.h>
 #include <malloc.h>
 
@@ -29,12 +28,13 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #ifdef sleep
 #undef sleep
 #endif
-void sleep (unsigned long seconds);
+unsigned sleep (unsigned seconds);
 char *getwd (char *dir);
 int getppid (void);
 char * getlogin (void);
 char * cuserid (char * s);
 unsigned getuid (void);
+unsigned geteuid (void);
 unsigned getegid (void);
 unsigned getgid (void);
 int setuid (unsigned uid);
diff --git a/lib-src/update-game-score.c b/lib-src/update-game-score.c
index 29c81a8936c..ec8b4317770 100644
--- a/lib-src/update-game-score.c
+++ b/lib-src/update-game-score.c
@@ -46,6 +46,10 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include <sys/stat.h>
 #include <getopt.h>
 
+#ifdef WINDOWSNT
+#include "ntlib.h"
+#endif
+
 #define MAX_ATTEMPTS 5
 #define MAX_SCORES 200
 #define MAX_DATA_LEN 1024
diff --git a/lib/Makefile.am b/lib/Makefile.am
index c72e0904221..f76d0d3928d 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -9,6 +9,10 @@ SUFFIXES =
 AM_CFLAGS = $(PROFILING_CFLAGS) $(GNULIB_WARN_CFLAGS) $(WERROR_CFLAGS)
 DEFAULT_INCLUDES = -I. -I$(top_srcdir)/lib -I../src -I$(top_srcdir)/src
 
+if BUILDING_FOR_WINDOWSNT
+include ../nt/gnulib.mk
+else
 include gnulib.mk
 
 libgnu_a_SOURCES += openat-die.c save-cwd.c
+endif
diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index e6f56664a52..a33796ce24f 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,18 @@
+2013-05-16  Eli Zaretskii  <eliz@gnu.org>
+
+        * subr.el (reveal-filename): New function.
+
+        * loadup.el: Compute Emacs executable versions on MS-Windows,
+        where executables have the .exe extension.  Add a hard link
+        emacs-XX.YY.ZZ.exe on MS-Windows.
+
+        * Makefile.in (XARGS_LIMIT): New variable.
+        (custom-deps, finder-data, autoloads)
+        ($(MH_E_DIR)/mh-loaddefs.el, $(TRAMP_DIR)/tramp-loaddefs.el)
+        ($(CAL_DIR)/cal-loaddefs.el, $(CAL_DIR)/diary-loaddefs.el)
+        ($(CAL_DIR)/hol-loaddefs.el): Use reveal-filename.
+        (compile-main): Limit xargs according to $(XARGS_LIMIT).
+
 2013-05-16  Leo Liu  <sdl.web@gmail.com>
 
         * progmodes/octave.el (octave-indent-defun): Mark obsolete.
diff --git a/lisp/Makefile.in b/lisp/Makefile.in
index c8707df15df..138ad5abfa6 100644
--- a/lisp/Makefile.in
+++ b/lisp/Makefile.in
@@ -24,6 +24,10 @@ abs_top_builddir = @abs_top_builddir@
 lisp = $(srcdir)
 VPATH = $(srcdir)
 
+# Empty for all systems except MinGW, where xargs needs an explicit
+# limitation.
+XARGS_LIMIT = @XARGS_LIMIT@
+
 # You can specify a different executable on the make command line,
 # e.g. "make EMACS=../src/emacs ...".
 
@@ -160,21 +164,21 @@ $(lisp)/cus-load.el:
 custom-deps: doit
         cd $(lisp); $(setwins_almost); \
         echo Directories: $$wins; \
-        $(emacs) -l cus-dep --eval '(setq generated-custom-dependencies-file "$(lisp)/cus-load.el")' -f custom-make-dependencies $$wins
+        $(emacs) -l cus-dep --eval '(setq generated-custom-dependencies-file (reveal-filename "$(lisp)/cus-load.el"))' -f custom-make-dependencies $$wins
 
 $(lisp)/finder-inf.el:
         $(MAKE) $(MFLAGS) finder-data
 finder-data: doit
         cd $(lisp); $(setwins_almost); \
         echo Directories: $$wins; \
-        $(emacs) -l finder --eval '(setq generated-finder-keywords-file "$(lisp)/finder-inf.el")' -f finder-compile-keywords-make-dist $$wins
+        $(emacs) -l finder --eval '(setq generated-finder-keywords-file (reveal-filename "$(lisp)/finder-inf.el"))' -f finder-compile-keywords-make-dist $$wins
 
 # The chmod +w is to handle env var CVSREAD=1.
 autoloads: $(LOADDEFS) doit
         cd $(lisp) && chmod +w $(AUTOGEN_VCS)
         cd $(lisp); $(setwins_almost); \
         echo Directories: $$wins; \
-        $(emacs) -l autoload --eval '(setq generated-autoload-file "$(lisp)/loaddefs.el")' -f batch-update-autoloads $$wins
+        $(emacs) -l autoload --eval '(setq generated-autoload-file (reveal-filename "$(lisp)/loaddefs.el"))' -f batch-update-autoloads $$wins
 
 # This is required by the bootstrap-emacs target in ../src/Makefile, so
 # we know that if we have an emacs executable, we also have a subdirs.el.
@@ -274,7 +278,7 @@ compile-main: compile-clean
           test -f $$el || continue; \
           test ! -f $${el}c && GREP_OPTIONS= grep '^;.*no-byte-compile: t' $$el > /dev/null && continue; \
           echo "$${el}c"; \
-        done | xargs echo) | \
+        done | xargs $(XARGS_LIMIT) echo) | \
         while read chunk; do \
           $(MAKE) $(MFLAGS) compile-targets EMACS="$(EMACS)" TARGETS="$$chunk"; \
         done
@@ -369,7 +373,7 @@ mh-autoloads: $(MH_E_DIR)/mh-loaddefs.el
 $(MH_E_DIR)/mh-loaddefs.el: $(MH_E_SRC)
         $(emacs) -l autoload \
            --eval "(setq generate-autoload-cookie \";;;###mh-autoload\")" \
-           --eval "(setq generated-autoload-file \"$@\")" \
+           --eval "(setq generated-autoload-file (reveal-filename \"$@\"))" \
            --eval "(setq make-backup-files nil)" \
            -f batch-update-autoloads $(MH_E_DIR)
 
@@ -387,7 +391,7 @@ TRAMP_SRC = $(TRAMP_DIR)/tramp.el    $(TRAMP_DIR)/tramp-adb.el	\
 $(TRAMP_DIR)/tramp-loaddefs.el: $(TRAMP_SRC)
         $(emacs) -l autoload \
            --eval "(setq generate-autoload-cookie \";;;###tramp-autoload\")" \
-           --eval "(setq generated-autoload-file \"$@\")" \
+           --eval "(setq generated-autoload-file (reveal-filename \"$@\"))" \
            --eval "(setq make-backup-files nil)" \
            -f batch-update-autoloads $(TRAMP_DIR)
 
@@ -409,21 +413,21 @@ CAL_SRC = $(CAL_DIR)/cal-bahai.el $(CAL_DIR)/cal-china.el  \
 $(CAL_DIR)/cal-loaddefs.el: $(CAL_SRC)
         $(emacs) -l autoload \
            --eval "(setq generate-autoload-cookie \";;;###cal-autoload\")" \
-           --eval "(setq generated-autoload-file \"$@\")" \
+           --eval "(setq generated-autoload-file (reveal-filename \"$@\"))" \
            --eval "(setq make-backup-files nil)" \
            -f batch-update-autoloads $(CAL_DIR)
 
 $(CAL_DIR)/diary-loaddefs.el: $(CAL_SRC)
         $(emacs) -l autoload \
            --eval "(setq generate-autoload-cookie \";;;###diary-autoload\")" \
-           --eval "(setq generated-autoload-file \"$@\")" \
+           --eval "(setq generated-autoload-file (reveal-filename \"$@\"))" \
            --eval "(setq make-backup-files nil)" \
            -f batch-update-autoloads $(CAL_DIR)
 
 $(CAL_DIR)/hol-loaddefs.el: $(CAL_SRC)
         $(emacs) -l autoload \
            --eval "(setq generate-autoload-cookie \";;;###holiday-autoload\")" \
-           --eval "(setq generated-autoload-file \"$@\")" \
+           --eval "(setq generated-autoload-file (reveal-filename \"$@\"))" \
            --eval "(setq make-backup-files nil)" \
            -f batch-update-autoloads $(CAL_DIR)
 
diff --git a/lisp/loadup.el b/lisp/loadup.el
index a2e0d8ecec5..5764cdec7eb 100644
--- a/lisp/loadup.el
+++ b/lisp/loadup.el
@@ -290,9 +290,12 @@
              (equal (nth 4 command-line-args) "dump"))
          (not (eq system-type 'ms-dos)))
     (let* ((base (concat "emacs-" emacs-version "."))
+           (exelen (if (eq system-type 'windows-nt) -4))
            (files (file-name-all-completions base default-directory))
-           (versions (mapcar (function (lambda (name)
-                                         (string-to-number (substring name (length base)))))
+           (versions (mapcar (function
+                              (lambda (name)
+                                (string-to-number
+                                 (substring name (length base) exelen))))
                              files)))
       (setq emacs-bzr-version (condition-case nil (emacs-bzr-get-version)
                               (error nil)))
@@ -376,18 +379,25 @@
       (dump-emacs "emacs" "temacs")
       (message "%d pure bytes used" pure-bytes-used)
       ;; Recompute NAME now, so that it isn't set when we dump.
-      (if (not (or (memq system-type '(ms-dos windows-nt))
+      (if (not (or (eq system-type 'ms-dos)
                    ;; Don't bother adding another name if we're just
                    ;; building bootstrap-emacs.
                    (equal (nth 3 command-line-args) "bootstrap")
                    (equal (nth 4 command-line-args) "bootstrap")))
-          (let ((name (concat "emacs-" emacs-version)))
+          (let ((name (concat "emacs-" emacs-version))
+                (exe (if (eq system-type 'windows-nt) ".exe" "")))
             (while (string-match "[^-+_.a-zA-Z0-9]+" name)
               (setq name (concat (downcase (substring name 0 (match-beginning 0)))
                                  "-"
                                  (substring name (match-end 0)))))
+            (setq name (concat name exe))
             (message "Adding name %s" name)
-            (add-name-to-file "emacs" name t)))
+            ;; When this runs on Windows, invocation-directory is not
+            ;; necessarily the current directory.
+            (add-name-to-file (expand-file-name (concat "emacs" exe)
+                                                invocation-directory)
+                              (expand-file-name name invocation-directory)
+                              t)))
       (kill-emacs)))
 
 ;; For machines with CANNOT_DUMP defined in config.h,
diff --git a/lisp/subr.el b/lisp/subr.el
index 177e9a84a58..9bf11a13ef6 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -4678,4 +4678,20 @@ as alpha versions."
                           (prin1-to-string (make-hash-table)))))
   (provide 'hashtable-print-readable))
 
+;; This is used in lisp/Makefile.in and in leim/Makefile.in to
+;; generate file names for autoloads, custom-deps, and finder-data.
+(defun reveal-filename (file)
+  "Produce the real file name for FILE.
+
+On systems other than MS-Windows, just returns FILE.
+On MS-Windows, converts /d/foo/bar form of file names
+passed by MSYS Make into d:/foo/bar that Emacs can grok.
+
+This function is called from lisp/Makefile."
+  (when (and (eq system-type 'windows-nt)
+             (string-match "\\`/[a-zA-Z]/" file))
+    (setq file (concat (substring file 1 2) ":" (substring file 2))))
+  file)
+
+
 ;;; subr.el ends here
diff --git a/nt/ChangeLog b/nt/ChangeLog
index b66871e319b..80b6390d368 100644
--- a/nt/ChangeLog
+++ b/nt/ChangeLog
@@ -1,3 +1,48 @@
+2013-05-16  Eli Zaretskii  <eliz@gnu.org>
+
+        * msysconfig.sh: New file.
+
+        * mingw-cfg.site: New file.
+
+        * makefile.w32-in (LOCAL_FLAGS): Add -DOLD_PATHS=1.
+
+        * inc/unistd.h: Include pwd.h and sys/types.h.
+
+        * inc/sys/time.h (_TIMEVAL_DEFINED, timerisset, timercmp)
+        (timerclear): Define.
+        (gettimeofday): Adjust signature to be Posix compatible, by using
+        the 'restrict' keyword.
+
+        * inc/sys/stat.h (UTIME_NOW, UTIME_OMIT): Define.
+        (struct _stat, struct _stati64): Define.
+
+        * inc/sys/socket.h (timeval): Define only for MSVC.
+        (FD_SET, FD_CLR, FD_ISSET, fd_set): Redefine only if
+        EMACS_CONFIG_H is defined.
+        (timeval): Undefine only for MSVC.
+
+        * inc/ms-w32.h (HAVE___BUILTIN_UNWIND_INIT, restrict)
+        (HAVE_WINDOW_SYSTEM, HAVE_MENUS, EMACS_CONFIGURATION)
+        (EMACS_CONFIG_OPTIONS, HAVE_LONG_LONG_INT)
+        (HAVE_UNSIGNED_LONG_LONG_INT): Define only if not already defined.
+        (fileno): Move definition after including stdio.h.
+        (sigset_t): Guard typedef by _W64.
+
+        * gnulib.mk: New file.
+
+        * epaths.nt: New file.
+
+        * addpm.c [!OLD_PATHS]: Include src/epaths.h, instead of having a
+        copy of the file names there.
+        <env_vars> [!OLD_PATHS]: Use macros from epaths.h instead of
+        literal strings.
+
+        * Makefile.in: New file.
+
+        * INSTALL.MSYS: New file.
+
+        * INSTALL: Mention INSTALL.MSYS.
+
 2013-05-15  Stefan Monnier  <monnier@iro.umontreal.ca>
 
         * makefile.w32-in (clean, top-distclean): DOC-X doesn't exist any more.
diff --git a/nt/INSTALL b/nt/INSTALL
index 0c4b50f0c28..8abd8aff920 100644
--- a/nt/INSTALL
+++ b/nt/INSTALL
@@ -13,9 +13,13 @@
   Do not use this recipe with Cygwin.  For building on Cygwin,
   use the normal installation instructions, ../INSTALL.
 
-  If you have a Cygwin or MSYS port of Bash on your Path, you will be
-  better off removing it from PATH.  (For details, search for "MSYS
-  sh.exe" below.)
+  Do not use these instructions with MSYS environment.  For building
+  the native Windows binary with MinGW and MSYS, follow the
+  instructions in the file INSTALL.MSYS in this directory.
+
+  For building without MSYS, if you have a Cygwin or MSYS port of Bash
+  on your Path, you will be better off removing it from PATH.  (For
+  details, search for "MSYS sh.exe" below.)
 
   1. Change to the `nt' directory (the directory of this file):
 
diff --git a/nt/INSTALL.MSYS b/nt/INSTALL.MSYS
new file mode 100644
index 00000000000..05ba6c65b22
--- /dev/null
+++ b/nt/INSTALL.MSYS
@@ -0,0 +1,640 @@
+                    Building and Installing Emacs on MS-Windows
+                          using the MSYS and MinGW tools
+
+  Copyright (C) 2013 Free Software Foundation, Inc.
+  See the end of the file for license conditions.
+
+The MSYS/MinGW build described here is supported on versions of
+Windows starting with Windows 2000 and newer.  Windows 9X are not
+supported (but the Emacs binary produced by this build will run on
+Windows 9X as well).
+
+* For the brave (a.k.a. "impatient"):
+
+  For those who have a working MSYS/MinGW development environment and
+  are comfortable with running Posix configure scripts, here are the
+  concise instructions for configuring and building the native Windows
+  binary of Emacs with these tools.
+
+  Do not use this recipe with Cygwin.  For building on Cygwin, use the
+  normal installation instructions, ../INSTALL.
+
+  Do not use these instructions if you don't have MSYS installed; for
+  that, see the file INSTALL in this directory.
+
+  0. Start the MSYS Bash window.  Everything else below is done from
+     that window's Bash prompt.
+
+  0a. If you are building from the development trunk (as opposed to a
+      release tarball), produce the configure script, by typing from
+      the top-level Emacs source directory:
+
+      ./autogen.sh
+
+  1. If you want to build Emacs outside of the source tree
+     (recommended), create the build directory and chdir there.
+
+  2. Invoke the MSYS-specific configure script:
+
+      - If you are building outside the source tree:
+
+        /PATH/TO/EMACS/SOURCE/TREE/nt/msysconfig.sh --prefix=PREFIX ...
+
+      - If you are building in-place, i.e. inside the source tree:
+
+        ./nt/msysconfig.sh --prefix=PREFIX ...
+
+     It is always preferable to use --prefix to configure Emacs for
+     some specific location of its installed tree; the default
+     /usr/local is not suitable for Windows.
+
+     You can pass other options to the configure script.  Here's a
+     typical example (for an in-place debug build):
+
+       CPPFLAGS='-DGLYPH_DEBUG=1' CFLAGS='-O0 -g3' ./nt/msysconfig.sh --prefix=d:/usr/emacs --enable-checking
+
+  3. After the configure script finishes, it should display the
+     resulting configuration.  After that, type
+
+       make
+
+     Use "make -j N" if your MSYS Make supports parallel execution;
+     the build will take significantly less time in that case.  Here N
+     is the number of simultaneous parallel jobs; use the number of
+     the cores on your system.
+
+  4. Install the produced binaries:
+
+       make install
+
+     If you want the installation tree to go to a place that is
+     different from the one specified by --prefix, say
+
+       make install prefix=/where/ever/you/want
+
+  That's it!
+
+  If these short instructions somehow fail, read the rest of this
+  file.
+
+* Installing MinGW and MSYS
+
+  Make sure you carefully read the following two sections in their
+  entirety and install/configure the various packages as instructed.
+  A correct installation makes all the rest almost trivial; a botched
+  installation will likely make you miserable for quite some time.
+
+  There are two alternative to installing MinGW + MSYS: using the GUI
+  installer, called mingw-get, provided by the MinGW project, or
+  manual installation.  The next two sections describe each one of
+  these.
+
+** Installing MinGW and MSYS using mingw-get
+
+  A nice GUI installer, called mingw-get, is available for those who
+  don't like to mess with manual installations.  You can download it
+  from here:
+
+    https://sourceforge.net/projects/mingw/files/Installer/mingw-get/
+
+  (This installer only supports packages downloaded from the MinGW
+  site; for the rest you will still need the manual method.)
+
+  After installing mingw-get, invoke it to install the packages that
+  are already selected by default on the "Select Components" screen of
+  its wizard.
+
+  After that, use "ming-get install PACKAGE" to install the following
+  additional packages:
+
+   . msys-base
+   . mingw-developer-toolkit
+   . msys-automake
+
+  (We recommend that you refrain from installing the MSYS Texinfo
+  package, which is part of msys-base, because it might produce mixed
+  EOL format when installing Info files.  Instead, install the MinGW
+  port of Texinfo, see the ezwinports URL below.)
+
+  At this point, you should be ready to configure and build Emacs in
+  its basic configuration.  Skip to the "Generating the configure
+  script" section for the build instructions.  If you want to build it
+  with image support and other optional libraries, read about the
+  optional libraries near the end of this document, before you start
+  the build.  Also, consider installing additional MinGW packages that
+  are required/recommended, especially if you are building from the
+  Bazaar repository, as described in the next section.
+
+** Installing MinGW and MSYS manually
+
+*** MinGW
+
+  You will need to install the MinGW port of GCC and Binutils, and the
+  MinGW runtime and Windows API distributions, to compile Emacs.  You
+  can find these on the MinGW download/Base page:
+
+    https://sourceforge.net/projects/mingw/files/MinGW/Base/
+
+  In general, install the latest stable versions of the following
+  MinGW packages from that page: gcc, binutils, mingw-rt, w32api.  You
+  only need the 'bin' and the 'dll' tarballs of each of the above.
+
+  MinGW packages are distributed as .tar.lzma compressed archives.  To
+  install the packages manually, we recommend to use the Windows port
+  of the 'bsdtar' program to unpack the tarballs.  'bsdtar' is
+  available as part of the 'libarchive' package from here:
+
+    http://sourceforge.net/projects/ezwinports/files/
+
+  The recommended place to install these packages is a single tree
+  starting from some directory on a drive other than the system drive
+  C:.  A typical example would be D:\usr, with D:\usr\bin holding the
+  binaries and DLLs (should be added to your Path environment
+  variable), D:\usr\include holding the include files, D:\usr\lib
+  holding the static and import libraries, D:\usr\share holding docs,
+  message catalogs, and package-specific subdirectories, etc.
+
+  Having all the headers and libraries in a single place will greatly
+  reduce the number of -I and -L flags you will have to pass to the
+  configure script (see below), as these files will be right where the
+  compiler expects them.
+
+  We specifically do NOT recommend installing packages below
+  "C:\Program Files" or "C:\Program Files (x86)".  These directories
+  are protected on versions of Windows from Vista and on, and you will
+  have difficulties updating and maintaining your installation later,
+  due to UAC elevation prompts, file virtualization, etc.  You *have*
+  been warned!
+
+  Additional MinGW packages are required/recommended, especially if
+  you are building from the Bazaar repository:
+
+   . Texinfo (needed to produce the Info manuals when building from
+     bzr, and for "make install")
+
+     Available from http://sourceforge.net/projects/ezwinports/files/.
+
+   . gzip (needed to compress files during "make install")
+
+     Available from http://gnuwin32.sourceforge.net/packages/gzip.htm.
+
+   . pkg-config (needed for building with some optional libraries,
+     such as GnuTLS and libxml2)
+
+     Available from http://www.gtk.org/download/win32.php
+
+  Each package might list other packages as prerequisites on its
+  download page (under "Runtime requirements"); download those as
+  well.  (Using the GUI installer mingw-get will fetch those
+  prerequisites automatically for you.)  A missing prerequisite will
+  manifest itself by the program failing to run and presenting a
+  pop-up dialog that states the missing or incompatible DLL; be sure
+  to find and install these missing DLLs.
+
+  Once you think you have MinGW installed, test the installation by
+  building a trivial "hello, world!" program, and make sure that it
+  builds without any error messages and the binary works when run.
+
+*** MSYS
+
+  You will need a reasonably full MSYS installation.  MSYS is an
+  environment needed to run the Posix configure scripts and the
+  resulting Makefile's, in order to produce native Windows binaries
+  using the MinGW compiler and runtime libraries.  Here's the list of
+  MSYS packages that are required:
+
+   . All the packages from the MSYS Base distribution, listed here:
+
+     https://sourceforge.net/projects/mingw/files/MSYS/Base/
+
+   . Additional packages listed below, from the MSYS Extension
+     distribution here:
+
+     https://sourceforge.net/projects/mingw/files/MSYS/Extension/
+
+      - flex
+      - bison
+      - m4
+      - perl
+      - mktemp
+
+     These should only be needed if you intend to build development
+     versions of Emacs from the Bazaar repository.
+
+   . Additional packages (needed only if building from the Bazaar
+     repository): Automake and Autoconf.  They are available from
+     here:
+
+     http://sourceforge.net/projects/ezwinports/files/automake-1.11.6-msys-bin.zip/download
+     http://sourceforge.net/projects/ezwinports/files/autoconf-2.65-msys-bin.zip/download
+
+  MSYS packages are distributed as .tar.lzma compressed archives.  To
+  install the packages manually, we recommend to use the Windows port
+  of the 'bsdtar' program, already mentioned above.
+
+  If/when you are confident in your MinGW/MSYS installation, and want
+  to speed up the builds, we recommend installing a pre-release
+  version of Make from here:
+
+     https://sourceforge.net/projects/mingwbuilds/files/external-binary-packages/
+
+  These are snapshot builds of many packages, but you only need
+  make.exe from there.  The advantage of this make.exe is that it
+  supports parallel builds, so you can use "make -j N" to considerably
+  speed up your builds
+
+  For each of these packages, install the 'bin' and 'dll' tarballs of
+  their latest stable releases.  If there's an 'ext' tarball (e.g.,
+  msysCORE and Coreutils have it), download and install those as well.
+
+  Each package might list other packages as prerequisites on its
+  download page (under "Runtime requirements"); download those as
+  well.  (Using the GUI installer mingw-get will fetch those
+  prerequisites automatically for you.)  A missing prerequisite will
+  manifest itself by the program failing to run and presenting a
+  pop-up dialog that states the missing or incompatible DLL; be sure
+  to find and install these missing DLLs.
+
+  MSYS packages should be installed in a separate tree from MinGW.
+  For example, use D:\MSYS or D:\usr\MSYS as the top-level directory
+  from which you unpack all of the MSYS packages.
+
+  Do NOT add the MSYS bin directory to your Windows Path!  Only the
+  MinGW bin directory should be on Path.  When you install MSYS, it
+  creates a shortcut on your desktop that invokes the MSYS Bash shell
+  in a Command Prompt window; that shell is already set up so that the
+  MSYS bin directory is on PATH ahead of any other directory.  Thus,
+  Bash will find MSYS executables first, which is exactly what you
+  need.
+
+  At this point, you are ready to build Emacs in its basic
+  configuration.  If you want to build it with image support and other
+  optional libraries, read about that near the end of this document.
+
+* Generating the configure script
+
+  If you are building a release or pretest tarball, skip this section,
+  because the configure script is already present in the tarball.
+
+  To build a development snapshot from the Emacs Bazaar repository,
+  you will first need to generate the configure script and a few other
+  auto-generated files.  (If this step, described below, somehow
+  fails, you can use the files in the autogen/ directory instead, but
+  they might be outdated, and, most importantly, you are well advised
+  not to disregard any failures in your local build procedures, as
+  these are likely to be symptoms of incorrect installation that will
+  bite you down the road.)
+
+  To generate the configure script, type this at the MSYS Bash prompt
+  from the top-level directory of the Emacs tree:
+
+     ./autogen.sh
+
+  If successful, this command should produce the following output:
+
+     $ ./autogen.sh
+     Checking whether you have the necessary tools...
+     (Read INSTALL.BZR for more details on building Emacs)
+
+     Checking for autoconf (need at least version 2.65)...
+     ok
+     Checking for automake (need at least version 1.11)...
+     ok
+     Your system has the required tools, running autoreconf...
+     You can now run `./configure'.
+
+* Configuring Emacs for MinGW:
+
+  Now it's time to run the configure script.  You can do that either
+  from a separate build directory that is outside of the Emacs source
+  tree (recommended), or from inside the source tree.  The former is
+  recommended because it allows you to have several different builds,
+  e.g., an optimized build and an unoptimized one, of the same
+  revision of the source tree; the source tree will be left in its
+  pristine state, without any build products.
+
+  You invoke the configure script like this:
+
+     /PATH/TO/EMACS/SOURCE/TREE/nt/msysconfig.sh --prefix=PREFIX ...
+
+  or, if you are building in-place, i.e. inside the source tree:
+
+     ./nt/msysconfig.sh --prefix=PREFIX ...
+
+  Here PREFIX is the place where you eventually want to install Emacs
+  once built, e.g. d:/usr.
+
+  You can pass additional options to the configure script, for the
+  full list type
+
+     ./nt/msysconfig.sh --help
+
+  As explained in the help text, you may need to tell the script what
+  are the optional flags to invoke the compiler.  This is needed if
+  some of your headers and libraries, e.g., those belonging to
+  optional image libraries, are installed in places where the compiler
+  normally doesn't look for them.  (Remember that advice above to
+  avoid such situations? here's is where you will start paying for
+  disregarding that recommendation.)  For example, if you have libpng
+  headers in C:\emacs\libs\libpng-1.2.37-lib\include and jpeg library
+  headers in C:\emacs\libs\jpeg-6b-4-lib\include, you will need to say
+  something like this:
+
+    CPPFLAGS='-Ic:/emacs/libs/libpng-1.2.37-lib/include -Ic:/emacs/libs/jpeg-6b-4-lib/include' ./nt/msysconfig.sh --prefix=PREFIX
+
+  which is quite a mouth-full, especially if you have more directories
+  to specify...  Perhaps you may wish to revisit your installation
+  decisions now.
+
+  A few frequently used options are needed when you want to produce an
+  unoptimized binary with runtime checks enabled:
+
+     CPPFLAGS='-DGLYPH_DEBUG=1' CFLAGS='-O0 -g3' ./nt/msysconfig.sh --prefix=PREFIX --enable-checking
+
+  Once invoked, the configure script will run for some time, and, if
+  successful, will eventually produce a summary of the configuration
+  like this:
+
+     Configured for `i686-pc-mingw32'.
+
+       Where should the build process find the source code?    /path/to/emacs/sources
+       What compiler should emacs be built with?               gcc  -std=gnu99 -O0 -g3
+       Should Emacs use the GNU version of malloc?             yes
+       Should Emacs use a relocating allocator for buffers?    yes
+       Should Emacs use mmap(2) for buffer allocation?         no
+       What window system should Emacs use?                    w32
+       What toolkit should Emacs use?                          none
+       Where do we find X Windows header files?                NONE
+       Where do we find X Windows libraries?                   NONE
+       Does Emacs use -lXaw3d?                                 no
+       Does Emacs use -lXpm?                                   yes
+       Does Emacs use -ljpeg?                                  yes
+       Does Emacs use -ltiff?                                  yes
+       Does Emacs use a gif library?                           yes
+       Does Emacs use -lpng?                                   yes
+       Does Emacs use -lrsvg-2?                                no
+       Does Emacs use imagemagick?                             no
+       Does Emacs use -lgpm?                                   no
+       Does Emacs use -ldbus?                                  no
+       Does Emacs use -lgconf?                                 no
+       Does Emacs use GSettings?                               no
+       Does Emacs use -lselinux?                               no
+       Does Emacs use -lgnutls?                                yes
+       Does Emacs use -lxml2?                                  yes
+       Does Emacs use -lfreetype?                              no
+       Does Emacs use -lm17n-flt?                              no
+       Does Emacs use -lotf?                                   no
+       Does Emacs use -lxft?                                   no
+       Does Emacs use toolkit scroll bars?                     yes
+
+  You are almost there, hang on.
+
+  If the output is significantly different, or if configure finishes
+  prematurely and displays some error message, you should examine the
+  configuration log in config.log and find the reason for the failure.
+
+  Once you succeeded in configuring Emacs, and just want to rebuild it
+  after updating your local repository from the main repository, you
+  don't need to re-run the configure script manually, unless you want
+  to change the configure-time options.  Just typing "make" will
+  re-run configure if necessary with the exact same options you
+  specified originally, and then go on to invoking Make, described
+  below.
+
+* Running Make.
+
+  This is simple: just type "make" and sit back, watching the fun.
+
+  If you installed a snapshot build of Make, the build will be much
+  faster if you type "make -j N" instead, where N is the number of
+  independent processing units on your machine.  E.g., on a core i7
+  system try using N of 6 or even 8.
+
+  When Make finishes, you can install the produced binaries:
+
+    make install
+
+  or, if you want the installed tree to go in a place different from
+  the configured one, type
+
+    make install prefix=WHEREVER
+
+  Congrats!  You have built and installed your own Emacs!
+
+* Make targets
+
+  The following make targets may be used by users building the source
+  distribution, or users who have checked out of Bazaar after
+  an initial bootstrapping.
+
+  make
+  Builds Emacs from the available sources and pre-compiled lisp files.
+
+  make install
+  Installs the built programs and the auxiliary files.
+
+  make clean
+  Removes object and executable files produced by the build process in
+  the current configuration.  After "make clean", you can rebuild with
+  the same configuration using make.  useful when you want to be sure
+  that all of the products are built from coherent sources.
+
+  make distclean
+  In addition to the files removed by make clean, this also removes
+  Makefiles and other generated files to get back to the state of a
+  freshly unpacked source distribution.  After make distclean, it is
+  necessary to run the configure script followed by "make", in order
+  to rebuild.
+
+  The following targets are intended only for use with the Bazaar sources.
+
+  make bootstrap
+  Removes all the auto-generated files and all the *.elc byte-compiled
+  files, and builds Emacs from scratch.  Useful when some change in
+  basic Emacs functionality makes byte compilation of updated files
+  fail.
+
+  make maintainer-clean
+  Removes everything that can be recreated, including compiled Lisp
+  files, to get back to the state of a fresh Bazaar tree.  After make
+  maintainer-clean, it is necessary to run configure and "make" or
+  "make bootstrap" to rebuild.  Occasionally it may be necessary to
+  run this target after an update.
+
+* Optional image library support
+
+  In addition to its "native" image formats (pbm and xbm), Emacs can
+  handle other image types: xpm, tiff, gif, png, jpeg and experimental
+  support for svg.
+
+  To build Emacs with support for them, the corresponding headers must
+  be in the include path and libraries should be where the linker
+  looks for them, when the configure script is run.  If needed, this
+  can be set up using the CPPFLAGS and CFLAGS variable specified on
+  the configure command line.  The configure script will report
+  whether it was able to detect the headers and libraries.  If the
+  results of this testing appear to be incorrect, please look for
+  details in the file config.log: it will show the failed test
+  programs and compiler error messages that should explain what is
+  wrong.  (Usually, any such failures happen because some headers are
+  missing due to bad packaging of the image support libraries.)
+
+  Note that any file path passed to the compiler or linker must use
+  forward slashes, or double each backslash, as that is how Bash
+  works.
+
+  If the configure script finds the necessary headers and libraries,
+  but they are for some reason incompatible, or if you want to omit
+  support for some image library that is installed on your system for
+  some other reason, use the --without-PACKAGE option to configure,
+  such as --without-gif to omit GIF, --without-tiff to omit TIFF, etc.
+  Passing the --help option to the configure script displays all of
+  the supported --without-PACKAGE options.
+
+  To use the external image support, the DLLs implementing the
+  functionality must be found when Emacs first needs them, either on the
+  PATH, or in the same directory as emacs.exe.  Failure to find a
+  library is not an error; the associated image format will simply be
+  unavailable.  Note that once Emacs has determined that a library can
+  not be found, there's no way to force it to try again, other than
+  restarting.  See the variable `dynamic-library-alist' to configure the
+  expected names of the libraries.
+
+  Some image libraries have dependencies on one another, or on zlib.
+  For example, tiff support depends on the jpeg library.  If you did not
+  compile the libraries yourself, you must make sure that any dependency
+  is in the PATH or otherwise accessible and that the binaries are
+  compatible (for example, that they were built with the same compiler).
+
+  Binaries for the image libraries (among many others) can be found at
+  the GnuWin32 project.  PNG, JPEG and TIFF libraries are also
+  included with GTK, which is installed along with other Free Software
+  that requires it.  Note specifically that, due to some packaging
+  snafus in the GnuWin32-supplied image libraries, you will need to
+  download _source_ packages for some of the libraries in order to get
+  the header files necessary for building Emacs with image support.
+
+  For PNG images, we recommend to use versions 1.4.x and later of
+  libpng, because previous versions had security issues.  You can find
+  precompiled libraries and headers on the GTK download page for
+  Windows (http://www.gtk.org/download/win32.php).
+
+  Versions 1.4.0 and later of libpng are binary incompatible with
+  earlier versions, so Emacs will only look for libpng libraries which
+  are compatible with the version it was compiled against.  That
+  version is given by the value of the Lisp variable `libpng-version';
+  e.g., 10403 means version 1.4.3.  The variable `dynamic-library-alist'
+  is automatically set to name only those DLL names that are known to
+  be compatible with the version given by `libpng-version'.  If PNG
+  support does not work for you even though you have the support DLL
+  installed, check the name of the installed DLL against
+  `dynamic-library-alist' and the value of `libpng-version', and
+  download compatible DLLs if needed.
+
+* Optional GnuTLS support
+
+  To compile with GnuTLS, you will need pkg-config to be installed, as
+  the configure script invokes pkg-config to find out which compiler
+  switches to use for GnuTLS.  See above for the URL where you can
+  find pkg-config for Windows.
+
+  You will also need to install the p11-kit package, which is a
+  dependency of GnuTLS, and its header files are needed for
+  compilation of programs that use GnuTLS.  You can find p11-kit on
+  the same site as GnuTLS, see the URL below.
+
+  If the configure script finds the GnuTLS header files and libraries
+  on your system, Emacs is built with GnuTLS support by default; to
+  avoid that you can pass the argument --without-gnutls.
+
+  In order to support GnuTLS at runtime, a GnuTLS-enabled Emacs must
+  be able to find the relevant DLLs during startup; failure to do so
+  is not an error, but GnuTLS won't be available to the running
+  session.
+
+  You can get pre-built binaries (including any required DLL and the
+  header files) at http://sourceforge.net/projects/ezwinports/files/.
+
+* Optional libxml2 support
+
+  To compile with libxml2, you will need pkg-config to be installed,
+  as the configure script invokes pkg-config to find out which
+  compiler switches to use for libxml2.  See above for the URL where
+  you can find pkg-config for Windows.
+
+  If the configure script finds the libxml2 header files and libraries
+  on your system, Emacs is built with libxml2 support by default; to
+  avoid that you can pass the argument --without-libxml2.
+
+  In order to support libxml2 at runtime, a libxml2-enabled Emacs must
+  be able to find the relevant DLLs during startup; failure to do so
+  is not an error, but libxml2 features won't be available to the
+  running session.
+
+  One place where you can get pre-built Windows binaries of libxml2
+  (including any required DLL and the header files) is here:
+
+     http://sourceforge.net/projects/ezwinports/files/
+
+  For runtime support of libxml2, you will also need to install the
+  libiconv "development" tarball, because the libiconv headers need to
+  be available to the compiler when you compile with libxml2 support.
+  A MinGW port of libiconv can be found on the MinGW site:
+
+   http://sourceforge.net/projects/mingw/files/MinGW/Base/libiconv/
+
+  You need the libiconv-X.Y.Z-N-mingw32-dev.tar.lzma tarball from that
+  site.
+
+* Experimental SVG support
+
+  To compile with SVG, you will need pkg-config to be installed, as
+  the configure script invokes pkg-config to find out which compiler
+  switches to use for SVG.  See above for the URL where you can find
+  pkg-config for Windows.
+
+  SVG support is currently experimental, and not built by default.
+  Specify --with-rsvg and ensure you have all the dependencies in your
+  include path.  Unless you have built a minimalist librsvg yourself
+  (untested), librsvg depends on a significant chunk of GTK+ to build,
+  plus a few Gnome libraries, libxml2, libbz2 and zlib at runtime.  The
+  easiest way to obtain the dependencies required for building is to
+  download a pre-bundled GTK+ development environment for Windows.
+
+  To use librsvg at runtime, ensure that librsvg and its dependencies
+  are on your PATH.  If you didn't build librsvg yourself, you will
+  need to check with where you downloaded it from for the
+  dependencies, as there are different build options.  If it is a
+  short list, then it most likely only lists the immediate
+  dependencies of librsvg, but the dependencies themselves have
+  dependencies - so don't download individual libraries from GTK+,
+  download and install the whole thing.  If you think you've got all
+  the dependencies and SVG support is still not working, check your
+  PATH for other libraries that shadow the ones you downloaded.
+  Libraries of the same name from different sources may not be
+  compatible, this problem was encountered with libbzip2 from GnuWin32
+  with libcroco from gnome.org.
+
+  If you can see etc/images/splash.svg, then you have managed to get
+  SVG support working.  Congratulations for making it through DLL hell
+  to this point.  You'll probably find that some SVG images crash
+  Emacs.  Problems have been observed in some images that contain
+  text, they seem to be a problem in the Windows port of Pango, or
+  maybe a problem with the way Cairo or librsvg is using it that
+  doesn't show up on other platforms.
+
+
+This file is part of GNU Emacs.
+
+GNU Emacs is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+GNU Emacs is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/nt/Makefile.in b/nt/Makefile.in
new file mode 100644
index 00000000000..3d5e1ca084c
--- /dev/null
+++ b/nt/Makefile.in
@@ -0,0 +1,212 @@
+# nt/Makefile for GNU Emacs.
+
+# Copyright (C) 2013 Free Software Foundation, Inc.
+
+# This file is part of GNU Emacs.
+
+# GNU Emacs is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# GNU Emacs is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+# Avoid trouble on systems where the `SHELL' variable might be
+# inherited from the environment.
+SHELL = /bin/sh
+
+# ==================== Things `configure' will edit ====================
+
+CC=@CC@
+CFLAGS=@CFLAGS@
+version=@version@
+## Used in $archlibdir.
+configuration=@configuration@
+EXEEXT=@EXEEXT@
+C_SWITCH_SYSTEM=@C_SWITCH_SYSTEM@
+C_SWITCH_MACHINE=@C_SWITCH_MACHINE@
+PROFILING_CFLAGS = @PROFILING_CFLAGS@
+WARN_CFLAGS = @WARN_CFLAGS@
+WERROR_CFLAGS = @WERROR_CFLAGS@
+
+# Program name transformation.
+TRANSFORM = @program_transform_name@
+
+# ==================== Where To Install Things ====================
+
+# The default location for installation.  Everything is placed in
+# subdirectories of this directory.  The default values for many of
+# the variables below are expressed in terms of this one, so you may
+# not need to change them.  This is set with the --prefix option to
+# `../configure'.
+prefix=@prefix@
+
+# Like `prefix', but used for architecture-specific files.  This is
+# set with the --exec-prefix option to `../configure'.
+exec_prefix=@exec_prefix@
+
+# Where to install Emacs and other binaries that people will want to
+# run directly (like etags).  This is set with the --bindir option
+# to `../configure'.
+bindir=@bindir@
+
+# Where to install and expect executable files to be run by Emacs
+# rather than directly by users, and other architecture-dependent
+# data.  ${archlibdir} is usually below this.  This is set with the
+# --libexecdir option to `../configure'.
+libexecdir=@libexecdir@
+
+# Directory for local state files for all programs.
+localstatedir=@localstatedir@
+
+# Where to find the source code.  This is set by the configure
+# script's `--srcdir' option.  However, the value of ${srcdir} in
+# this makefile is not identical to what was specified with --srcdir,
+# since the variable here has `/lib-src' added at the end.
+
+# We use $(srcdir) explicitly in dependencies so as not to depend on VPATH.
+srcdir=@srcdir@
+VPATH=@srcdir@
+
+# The top-level source directory, also set by configure.
+top_srcdir=@top_srcdir@
+
+# ==================== Emacs-specific directories ====================
+
+# These variables hold the values Emacs will actually use.  They are
+# based on the values of the standard Make variables above.
+
+# Where to put executables to be run by Emacs rather than the user.
+# This path usually includes the Emacs version and configuration name,
+# so that multiple configurations for multiple versions of Emacs may
+# be installed at once.  This can be set with the --archlibdir option
+# to `../configure'.
+archlibdir=@archlibdir@
+
+# ==================== Utility Programs for the Build =================
+
+# ../configure figures out the correct values for these.
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+# By default, we uphold the dignity of our programs.
+INSTALL_STRIP =
+MKDIR_P = @MKDIR_P@
+
+# ========================== Lists of Files ===========================
+
+# Things that a user might actually run, which should be installed in bindir.
+INSTALLABLES = runemacs${EXEEXT} addpm${EXEEXT}
+
+# Things that Emacs runs internally, which should not be installed in bindir.
+UTILITIES = cmdproxy${EXEEXT} ddeclient${EXEEXT}
+
+# Things that Emacs runs during the build process.
+DONT_INSTALL = addsection${EXEEXT}
+
+# All files that are created by the linker, i.e., whose names end in ${EXEEXT}.
+EXE_FILES = ${INSTALLABLES} ${UTILITIES} ${DONT_INSTALL}
+
+# =========================== Configuration ===========================
+
+# MS-Windows resource files and resource compiler
+EMACSRES = @EMACSRES@
+EMACS_MANIFEST = @EMACS_MANIFEST@
+WINDRES = @WINDRES@
+
+## Extra libraries to use when linking addpm.
+LIBS_ADDPM = -lole32 -luuid
+
+## Compilation and linking flags
+BASE_CFLAGS = $(C_SWITCH_SYSTEM) $(C_SWITCH_MACHINE) \
+              $(WARN_CFLAGS) $(WERROR_CFLAGS) \
+              -I. -I${srcdir}
+
+ALL_CFLAGS = ${BASE_CFLAGS} ${PROFILING_CFLAGS} ${LDFLAGS} ${CPPFLAGS} ${CFLAGS}
+LINK_CFLAGS = ${BASE_CFLAGS} ${LDFLAGS} ${CFLAGS}
+CPP_CFLAGS = ${BASE_CFLAGS} ${PROFILING_CFLAGS} ${CPPFLAGS} ${CFLAGS}
+
+all: ${EXE_FILES}
+
+.PHONY: all
+
+## Install the internal utilities.  Until they are installed, we can
+## just run them directly from nt/.
+$(DESTDIR)${archlibdir}: all
+        @echo
+        @echo "Installing utilities run internally by Emacs."
+        umask 022; ${MKDIR_P} $(DESTDIR)${archlibdir}
+        if [ `cd $(DESTDIR)${archlibdir} && /bin/pwd` != `/bin/pwd` ]; then \
+          for file in ${UTILITIES}; do \
+            $(INSTALL_PROGRAM) $(INSTALL_STRIP) $$file $(DESTDIR)${archlibdir}/$$file ; \
+          done ; \
+        fi
+
+.PHONY: install uninstall mostlyclean clean distclean maintainer-clean
+.PHONY: extraclean check tags
+
+install: $(DESTDIR)${archlibdir}
+        @echo
+        @echo "Installing utilities for users to run."
+        umask 022; ${MKDIR_P} $(DESTDIR)${bindir}
+        for file in ${INSTALLABLES} ; do \
+          $(INSTALL_PROGRAM) $(INSTALL_STRIP) $${file} $(DESTDIR)${bindir}/`echo $${file} | sed -e 's/${EXEEXT}$$//' -e '$(TRANSFORM)'`${EXEEXT} ; \
+        done
+
+uninstall:
+        for file in ${INSTALLABLES}; do \
+          rm -f $(DESTDIR)${bindir}/`echo $${file} | sed -e 's/${EXEEXT}$$//' -e '$(TRANSFORM)'`${EXEEXT} ; \
+        done
+        if [ -d $(DESTDIR)${archlibdir} ]; then \
+          (cd $(DESTDIR)${archlibdir} && rm -f ${UTILITIES}) \
+        fi
+
+mostlyclean:
+        -rm -f core *.o
+
+clean: mostlyclean
+        -rm -f ${EXE_FILES}
+
+distclean: clean
+        -rm -f TAGS
+        -rm -f Makefile
+
+maintainer-clean: distclean
+        true
+
+extraclean: maintainer-clean
+        -rm -f *~ \#*
+
+## Test the contents of the directory.
+check:
+        @echo "We don't have any tests for the nt/ directory yet."
+
+tags: TAGS
+TAGS: ${EXE_FILES:${EXEEXT}=.c}
+        ../lib-src/etags *.[ch]
+
+## Build the programs
+addsection${EXEEXT}: ${srcdir}/addsection.c
+        $(CC) ${ALL_CFLAGS} ${srcdir}/addsection.c -o addsection${EXEEXT}
+
+addpm${EXEEXT}: ${srcdir}/addpm.c ../src/epaths.h
+        $(CC) ${ALL_CFLAGS} ${srcdir}/addpm.c $(LIBS_ADDPM) -o addpm${EXEEXT}
+
+ddeclient${EXEEXT}: ${srcdir}/ddeclient.c
+        $(CC) ${ALL_CFLAGS} ${srcdir}/ddeclient.c -o ddeclient${EXEEXT}
+
+cmdproxy${EXEEXT}: ${srcdir}/cmdproxy.c
+        $(CC) ${ALL_CFLAGS} ${srcdir}/cmdproxy.c -o cmdproxy${EXEEXT}
+
+runemacs${EXEEXT}: ${srcdir}/runemacs.c $(EMACSRES)
+        $(CC) ${ALL_CFLAGS} ${srcdir}/runemacs.c $(EMACSRES) -mwindows \
+         -o runemacs${EXEEXT}
+
+emacs.res: ${srcdir}/emacs.rc ${srcdir}/icons/emacs.ico ${srcdir}/$(EMACS_MANIFEST)
+        ${WINDRES} -O coff -o emacs.res ${srcdir}/emacs.rc
diff --git a/nt/addpm.c b/nt/addpm.c
index 688e0167334..48c77821c8c 100644
--- a/nt/addpm.c
+++ b/nt/addpm.c
@@ -50,6 +50,10 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include <shlobj.h>
 #include <ddeml.h>
 
+#ifndef OLD_PATHS
+#include "../src/epaths.h"
+#endif
+
 HDDEDATA CALLBACK
 DdeCallback (UINT uType, UINT uFmt, HCONV hconv,
              HSZ hsz1, HSZ hsz2, HDDEDATA hdata,
@@ -76,6 +80,7 @@ static struct entry
 }
 env_vars[] =
 {
+#ifdef OLD_PATHS
   {"emacs_dir", NULL},
   {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"},
   {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"},
@@ -86,6 +91,18 @@ env_vars[] =
   /*  {"INFOPATH", "%emacs_dir%/info"},  */
   {"EMACSDOC", "%emacs_dir%/etc"},
   {"TERM", "cmd"}
+#else  /* !OLD_PATHS */
+  {"emacs_dir", NULL},
+  {"EMACSLOADPATH", PATH_SITELOADSEARCH ";" PATH_LOADSEARCH},
+  {"SHELL", PATH_EXEC "/cmdproxy.exe"},
+  {"EMACSDATA", PATH_DATA},
+  {"EMACSPATH", PATH_EXEC},
+  /* We no longer set INFOPATH because Info-default-directory-list
+     is then ignored.  */
+  /*  {"INFOPATH", "%emacs_dir%/info"},  */
+  {"EMACSDOC", PATH_DOC},
+  {"TERM", "cmd"}
+#endif
 };
 
 BOOL
diff --git a/nt/epaths.nt b/nt/epaths.nt
new file mode 100644
index 00000000000..1e418550d52
--- /dev/null
+++ b/nt/epaths.nt
@@ -0,0 +1,89 @@
+/* Hey Emacs, this is -*- C -*- code!  */
+/* epaths.in file for MS-Windows build that uses the configure script.
+
+   Since Emacs on Windows must be relocatable to any directory, it
+   cannot have here hard-coded directories determined at configure
+   time.  Therefore, each directory must begin with %emacs_dir%, which
+   is resolved at startup to the root of the Emacs installation tree
+   (see w32.c:init_environment).
+
+   This file is edited at configure time to replace @VER@ by the Emacs
+   version being built (e.g., 25.9.77), @CFG@ by the canonical name of
+   the host system (e.g., i686-pc-mingw32), and @SRC@ by the root of
+   the Emacs source tree used to build Emacs.  */
+/*
+Copyright (C) 1993, 1995, 1997, 1999, 2001-2013 Free Software
+Foundation, Inc.
+
+This file is part of GNU Emacs.
+
+GNU Emacs is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+GNU Emacs is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* Together with PATH_SITELOADSEARCH, this gives the default value of
+   load-path, which is the search path for the Lisp function "load".
+   Configure (using "make epaths-force") sets this to
+   ${standardlisppath}, which typically has a value like:
+   <datadir>/emacs/VERSION/lisp:<datadir>/emacs/VERSION/leim
+   where datadir is eg /usr/local/share.
+*/
+#define PATH_LOADSEARCH "%emacs_dir%/share/emacs/@VER@/lisp;%emacs_dir%/share/emacs/@VER@/leim"
+
+/* Like PATH_LOADSEARCH, but contains the non-standard pieces.
+   These are the site-lisp directories, typically something like
+   <datadir>/emacs/VERSION/site-lisp:<datadir>/emacs/site-lisp
+   Configure prepends any $locallisppath, as set by the
+   --enable-locallisppath argument.
+   This is combined with PATH_LOADSEARCH to make the default load-path.
+   If the --no-site-lisp option is used, this piece is excluded.
+*/
+#define PATH_SITELOADSEARCH "%emacs_dir%/share/emacs/@VER@/site-lisp;%emacs_dir%/share/emacs/site-lisp"
+
+/* Like PATH_LOADSEARCH, but used only during the build process
+   when Emacs is dumping.  Configure (using "make epaths-force") sets
+   this to $buildlisppath, which normally has the value: <srcdir>/lisp.
+*/
+#define PATH_DUMPLOADSEARCH "@SRC@/lisp"
+
+/* The extra search path for programs to invoke.  This is appended to
+   whatever the PATH environment variable says to set the Lisp
+   variable exec-path and the first file name in it sets the Lisp
+   variable exec-directory.  exec-directory is used for finding
+   executables and other architecture-dependent files.  */
+#define PATH_EXEC "%emacs_dir%/libexec/emacs/@VER@/@CFG@"
+
+/* Where Emacs should look for its architecture-independent data
+   files, like the NEWS file.  The lisp variable data-directory
+   is set to this value.  */
+#define PATH_DATA "%emacs_dir%/share/emacs/@VER@/etc"
+
+/* Where Emacs should look for X bitmap files.
+   The lisp variable x-bitmap-file-path is set based on this value.  */
+#define PATH_BITMAPS ""
+
+/* Where Emacs should look for its docstring file.  The lisp variable
+   doc-directory is set to this value.  */
+#define PATH_DOC "%emacs_dir%/share/emacs/@VER@/etc"
+
+/* Where the configuration process believes the info tree lives.  The
+   lisp variable configure-info-directory gets its value from this
+   macro, and is then used to set the Info-default-directory-list.  */
+#define PATH_INFO "%emacs_dir%/share/info"
+
+/* Where Emacs should store game score files.  */
+#define PATH_GAME "%emacs_dir%/var/games/emacs"
+
+/* Where Emacs should look for the application default file. */
+#define PATH_X_DEFAULTS ""
+
diff --git a/nt/gnulib.mk b/nt/gnulib.mk
new file mode 100644
index 00000000000..ac4fc2768d9
--- /dev/null
+++ b/nt/gnulib.mk
@@ -0,0 +1,902 @@
+## This file is an edited copy if ../lib/gnulib.mk.
+##
+## The purpose of the edits is to avoid generating any headers
+## which would conflict with either the headers we have in nt/inc,
+## or with MinGW system headers and subsequent redirection of some
+## functions in nt/inc/ms-w32.h.
+##
+## In general, do NOT remove anything from ../lib/gnulib.mk that
+## doesn't need to be removed, to minimize the differences from
+## upstream gnulib.mk and thus make the maintenance easier.  Every
+## header file whose generation is controlled by configure-time tests
+## does NOT need to be removed; instead, force the configure script to
+## accept whatever MinGW has to offer, by defining the appropriate
+## Autoconf variable in the nt/mingw-cfg.site file.  Headers that are
+## generated conditionally have the tell-tale "if GL_GENERATE_foo_H"
+## condition before their Makefile snippet in this file.  Likewise, do
+## NOT remove gnulib modules which introduce header files that don't
+## exist in MinGW and in nt/inc/, since they cannot possibly clash
+## with anything.  Gnulib modules that introduce source *.c files also
+## need not be removed; if they define functions that could clash with
+## the w32 substitutes in Emacs, disable their compilation by defining
+## suitable variables in nt/mingw-cfg.site.
+##
+## Process this file with automake to produce Makefile.in.
+# Copyright (C) 2002-2013 Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this file.  If not, see <http://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License,
+# this file may be distributed as part of a program that
+# contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# Generated by gnulib-tool.
+# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --avoid=dup --avoid=fchdir --avoid=fcntl --avoid=fstat --avoid=malloc-posix --avoid=msvc-inval --avoid=msvc-nothrow --avoid=open --avoid=openat-die --avoid=opendir --avoid=raise --avoid=save-cwd --avoid=select --avoid=sigprocmask --avoid=sys_types --avoid=threadlib --makefile-name=gnulib.mk --conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files alloca-opt c-ctype c-strcase careadlinkat close-stream crypto/md5 crypto/sha1 crypto/sha256 crypto/sha512 dtoastr dtotimespec dup2 environ execinfo faccessat fcntl-h fdatasync fdopendir filemode fstatat fsync getloadavg getopt-gnu gettime gettimeofday ignore-value intprops largefile lstat manywarnings memrchr mktime pselect pthread_sigmask putenv qacl readlink readlinkat sig2str socklen stat-time stdalign stdarg stdbool stdio strftime strtoimax strtoumax symlink sys_stat sys_time time timer-time timespec-add timespec-sub unsetenv utimens warnings
+
+
+MOSTLYCLEANFILES += core *.stackdump
+
+noinst_LIBRARIES += libgnu.a
+
+libgnu_a_SOURCES =
+libgnu_a_LIBADD = $(gl_LIBOBJS)
+libgnu_a_DEPENDENCIES = $(gl_LIBOBJS)
+EXTRA_libgnu_a_SOURCES =
+
+## begin gnulib module alloca-opt
+
+BUILT_SOURCES += $(ALLOCA_H)
+
+# We need the following in order to create <alloca.h> when the system
+# doesn't have one that works with the given compiler.
+if GL_GENERATE_ALLOCA_H
+alloca.h: alloca.in.h $(top_builddir)/config.status
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+          cat $(srcdir)/alloca.in.h; \
+        } > $@-t && \
+        mv -f $@-t $@
+else
+alloca.h: $(top_builddir)/config.status
+        rm -f $@
+endif
+MOSTLYCLEANFILES += alloca.h alloca.h-t
+
+EXTRA_DIST += alloca.in.h
+
+## end   gnulib module alloca-opt
+
+## begin gnulib module c-ctype
+
+libgnu_a_SOURCES += c-ctype.h c-ctype.c
+
+## end   gnulib module c-ctype
+
+## begin gnulib module c-strcase
+
+libgnu_a_SOURCES += c-strcase.h c-strcasecmp.c c-strncasecmp.c
+
+## end   gnulib module c-strcase
+
+## begin gnulib module close-stream
+
+libgnu_a_SOURCES += close-stream.c
+
+EXTRA_DIST += close-stream.h
+
+## end   gnulib module close-stream
+
+## begin gnulib module crypto/md5
+
+libgnu_a_SOURCES += md5.c
+
+EXTRA_DIST += md5.h
+
+## end   gnulib module crypto/md5
+
+## begin gnulib module crypto/sha1
+
+libgnu_a_SOURCES += sha1.c
+
+EXTRA_DIST += sha1.h
+
+## end   gnulib module crypto/sha1
+
+## begin gnulib module crypto/sha256
+
+libgnu_a_SOURCES += sha256.c
+
+EXTRA_DIST += sha256.h
+
+## end   gnulib module crypto/sha256
+
+## begin gnulib module crypto/sha512
+
+libgnu_a_SOURCES += sha512.c
+
+EXTRA_DIST += sha512.h
+
+## end   gnulib module crypto/sha512
+
+## begin gnulib module dosname
+
+if gl_GNULIB_ENABLED_dosname
+
+endif
+EXTRA_DIST += dosname.h
+
+## end   gnulib module dosname
+
+## begin gnulib module dtoastr
+
+libgnu_a_SOURCES += dtoastr.c
+
+EXTRA_DIST += ftoastr.c ftoastr.h
+
+EXTRA_libgnu_a_SOURCES += ftoastr.c
+
+## end   gnulib module dtoastr
+
+## begin gnulib module dtotimespec
+
+libgnu_a_SOURCES += dtotimespec.c
+
+## end   gnulib module dtotimespec
+
+## begin gnulib module dup2
+
+
+EXTRA_DIST += dup2.c
+
+EXTRA_libgnu_a_SOURCES += dup2.c
+
+## end   gnulib module dup2
+
+## begin gnulib module errno
+
+BUILT_SOURCES += $(ERRNO_H)
+
+# We need the following in order to create <errno.h> when the system
+# doesn't have one that is POSIX compliant.
+if GL_GENERATE_ERRNO_H
+errno.h: errno.in.h $(top_builddir)/config.status
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+          sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+              -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+              -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+              -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+              -e 's|@''NEXT_ERRNO_H''@|$(NEXT_ERRNO_H)|g' \
+              -e 's|@''EMULTIHOP_HIDDEN''@|$(EMULTIHOP_HIDDEN)|g' \
+              -e 's|@''EMULTIHOP_VALUE''@|$(EMULTIHOP_VALUE)|g' \
+              -e 's|@''ENOLINK_HIDDEN''@|$(ENOLINK_HIDDEN)|g' \
+              -e 's|@''ENOLINK_VALUE''@|$(ENOLINK_VALUE)|g' \
+              -e 's|@''EOVERFLOW_HIDDEN''@|$(EOVERFLOW_HIDDEN)|g' \
+              -e 's|@''EOVERFLOW_VALUE''@|$(EOVERFLOW_VALUE)|g' \
+              < $(srcdir)/errno.in.h; \
+        } > $@-t && \
+        mv $@-t $@
+else
+errno.h: $(top_builddir)/config.status
+        rm -f $@
+endif
+MOSTLYCLEANFILES += errno.h errno.h-t
+
+EXTRA_DIST += errno.in.h
+
+## end   gnulib module errno
+
+## begin gnulib module euidaccess
+
+if gl_GNULIB_ENABLED_euidaccess
+
+endif
+EXTRA_DIST += euidaccess.c
+
+EXTRA_libgnu_a_SOURCES += euidaccess.c
+
+## end   gnulib module euidaccess
+
+## begin gnulib module execinfo
+
+BUILT_SOURCES += $(EXECINFO_H)
+
+# We need the following in order to create <execinfo.h> when the system
+# doesn't have one that works.
+if GL_GENERATE_EXECINFO_H
+execinfo.h: execinfo.in.h $(top_builddir)/config.status
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+          cat $(srcdir)/execinfo.in.h; \
+        } > $@-t && \
+        mv $@-t $@
+else
+execinfo.h: $(top_builddir)/config.status
+        rm -f $@
+endif
+MOSTLYCLEANFILES += execinfo.h execinfo.h-t
+
+EXTRA_DIST += execinfo.c execinfo.in.h
+
+EXTRA_libgnu_a_SOURCES += execinfo.c
+
+## end   gnulib module execinfo
+
+## begin gnulib module faccessat
+
+
+EXTRA_DIST += at-func.c faccessat.c
+
+EXTRA_libgnu_a_SOURCES += at-func.c faccessat.c
+
+## end   gnulib module faccessat
+
+## begin gnulib module fdatasync
+
+
+EXTRA_DIST += fdatasync.c
+
+EXTRA_libgnu_a_SOURCES += fdatasync.c
+
+## end   gnulib module fdatasync
+
+## begin gnulib module fdopendir
+
+
+EXTRA_DIST += fdopendir.c
+
+EXTRA_libgnu_a_SOURCES += fdopendir.c
+
+## end   gnulib module fdopendir
+
+## begin gnulib module filemode
+
+libgnu_a_SOURCES += filemode.c
+
+EXTRA_DIST += filemode.h
+
+## end   gnulib module filemode
+
+## begin gnulib module fpending
+
+
+EXTRA_DIST += fpending.c fpending.h
+
+EXTRA_libgnu_a_SOURCES += fpending.c
+
+## end   gnulib module fpending
+
+## begin gnulib module fstatat
+
+
+EXTRA_DIST += at-func.c fstatat.c
+
+EXTRA_libgnu_a_SOURCES += at-func.c fstatat.c
+
+## end   gnulib module fstatat
+
+## begin gnulib module fsync
+
+
+EXTRA_DIST += fsync.c
+
+EXTRA_libgnu_a_SOURCES += fsync.c
+
+## end   gnulib module fsync
+
+## begin gnulib module getgroups
+
+if gl_GNULIB_ENABLED_getgroups
+
+endif
+EXTRA_DIST += getgroups.c
+
+EXTRA_libgnu_a_SOURCES += getgroups.c
+
+## end   gnulib module getgroups
+
+## begin gnulib module getloadavg
+
+
+EXTRA_DIST += getloadavg.c
+
+EXTRA_libgnu_a_SOURCES += getloadavg.c
+
+## end   gnulib module getloadavg
+
+## begin gnulib module getopt-posix
+
+BUILT_SOURCES += $(GETOPT_H)
+
+# We need the following in order to create <getopt.h> when the system
+# doesn't have one that works with the given compiler.
+getopt.h: getopt.in.h $(top_builddir)/config.status $(ARG_NONNULL_H)
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+          sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+              -e 's|@''HAVE_GETOPT_H''@|$(HAVE_GETOPT_H)|g' \
+              -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+              -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+              -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+              -e 's|@''NEXT_GETOPT_H''@|$(NEXT_GETOPT_H)|g' \
+              -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+              < $(srcdir)/getopt.in.h; \
+        } > $@-t && \
+        mv -f $@-t $@
+MOSTLYCLEANFILES += getopt.h getopt.h-t
+
+EXTRA_DIST += getopt.c getopt.in.h getopt1.c getopt_int.h
+
+EXTRA_libgnu_a_SOURCES += getopt.c getopt1.c
+
+## end   gnulib module getopt-posix
+
+## begin gnulib module gettext-h
+
+if gl_GNULIB_ENABLED_be453cec5eecf5731a274f2de7f2db36
+libgnu_a_SOURCES += gettext.h
+
+endif
+## end   gnulib module gettext-h
+
+## begin gnulib module gettime
+
+libgnu_a_SOURCES += gettime.c
+
+## end   gnulib module gettime
+
+## begin gnulib module gettimeofday
+
+
+EXTRA_DIST += gettimeofday.c
+
+EXTRA_libgnu_a_SOURCES += gettimeofday.c
+
+## end   gnulib module gettimeofday
+
+## begin gnulib module group-member
+
+if gl_GNULIB_ENABLED_a9786850e999ae65a836a6041e8e5ed1
+
+endif
+EXTRA_DIST += group-member.c
+
+EXTRA_libgnu_a_SOURCES += group-member.c
+
+## end   gnulib module group-member
+
+## begin gnulib module ignore-value
+
+
+EXTRA_DIST += ignore-value.h
+
+## end   gnulib module ignore-value
+
+## begin gnulib module intprops
+
+
+EXTRA_DIST += intprops.h
+
+## end   gnulib module intprops
+
+## begin gnulib module lstat
+
+
+EXTRA_DIST += lstat.c
+
+EXTRA_libgnu_a_SOURCES += lstat.c
+
+## end   gnulib module lstat
+
+## begin gnulib module memrchr
+
+
+EXTRA_DIST += memrchr.c
+
+EXTRA_libgnu_a_SOURCES += memrchr.c
+
+## end   gnulib module memrchr
+
+## begin gnulib module mktime
+
+
+EXTRA_DIST += mktime-internal.h mktime.c
+
+EXTRA_libgnu_a_SOURCES += mktime.c
+
+## end   gnulib module mktime
+
+## begin gnulib module openat-h
+
+if gl_GNULIB_ENABLED_03e0aaad4cb89ca757653bd367a6ccb7
+
+endif
+EXTRA_DIST += openat.h
+
+## end   gnulib module openat-h
+
+## begin gnulib module pathmax
+
+if gl_GNULIB_ENABLED_pathmax
+
+endif
+EXTRA_DIST += pathmax.h
+
+## end   gnulib module pathmax
+
+## begin gnulib module pselect
+
+
+EXTRA_DIST += pselect.c
+
+EXTRA_libgnu_a_SOURCES += pselect.c
+
+## end   gnulib module pselect
+
+## begin gnulib module pthread_sigmask
+
+
+EXTRA_DIST += pthread_sigmask.c
+
+EXTRA_libgnu_a_SOURCES += pthread_sigmask.c
+
+## end   gnulib module pthread_sigmask
+
+## begin gnulib module putenv
+
+
+EXTRA_DIST += putenv.c
+
+EXTRA_libgnu_a_SOURCES += putenv.c
+
+## end   gnulib module putenv
+
+## begin gnulib module qacl
+
+libgnu_a_SOURCES += acl-errno-valid.c file-has-acl.c qcopy-acl.c
+
+EXTRA_DIST += acl-internal.h acl.h acl_entries.c
+
+EXTRA_libgnu_a_SOURCES += acl_entries.c
+
+## end   gnulib module qacl
+
+## begin gnulib module readlink
+
+
+EXTRA_DIST += readlink.c
+
+EXTRA_libgnu_a_SOURCES += readlink.c
+
+## end   gnulib module readlink
+
+## begin gnulib module readlinkat
+
+
+EXTRA_DIST += at-func.c readlinkat.c
+
+EXTRA_libgnu_a_SOURCES += at-func.c readlinkat.c
+
+## end   gnulib module readlinkat
+
+## begin gnulib module root-uid
+
+if gl_GNULIB_ENABLED_6099e9737f757db36c47fa9d9f02e88c
+
+endif
+EXTRA_DIST += root-uid.h
+
+## end   gnulib module root-uid
+
+## begin gnulib module sig2str
+
+
+EXTRA_DIST += sig2str.c sig2str.h
+
+EXTRA_libgnu_a_SOURCES += sig2str.c
+
+## end   gnulib module sig2str
+
+## begin gnulib module snippet/_Noreturn
+
+# Because this Makefile snippet defines a variable used by other
+# gnulib Makefile snippets, it must be present in all Makefile.am that
+# need it. This is ensured by the applicability 'all' defined above.
+
+_NORETURN_H=$(top_srcdir)/build-aux/snippet/_Noreturn.h
+
+EXTRA_DIST += $(top_srcdir)/build-aux/snippet/_Noreturn.h
+
+## end   gnulib module snippet/_Noreturn
+
+## begin gnulib module snippet/arg-nonnull
+
+# The BUILT_SOURCES created by this Makefile snippet are not used via #include
+# statements but through direct file reference. Therefore this snippet must be
+# present in all Makefile.am that need it. This is ensured by the applicability
+# 'all' defined above.
+
+BUILT_SOURCES += arg-nonnull.h
+# The arg-nonnull.h that gets inserted into generated .h files is the same as
+# build-aux/snippet/arg-nonnull.h, except that it has the copyright header cut
+# off.
+arg-nonnull.h: $(top_srcdir)/build-aux/snippet/arg-nonnull.h
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        sed -n -e '/GL_ARG_NONNULL/,$$p' \
+          < $(top_srcdir)/build-aux/snippet/arg-nonnull.h \
+          > $@-t && \
+        mv $@-t $@
+MOSTLYCLEANFILES += arg-nonnull.h arg-nonnull.h-t
+
+ARG_NONNULL_H=arg-nonnull.h
+
+EXTRA_DIST += $(top_srcdir)/build-aux/snippet/arg-nonnull.h
+
+## end   gnulib module snippet/arg-nonnull
+
+## begin gnulib module snippet/c++defs
+
+# The BUILT_SOURCES created by this Makefile snippet are not used via #include
+# statements but through direct file reference. Therefore this snippet must be
+# present in all Makefile.am that need it. This is ensured by the applicability
+# 'all' defined above.
+
+BUILT_SOURCES += c++defs.h
+# The c++defs.h that gets inserted into generated .h files is the same as
+# build-aux/snippet/c++defs.h, except that it has the copyright header cut off.
+c++defs.h: $(top_srcdir)/build-aux/snippet/c++defs.h
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        sed -n -e '/_GL_CXXDEFS/,$$p' \
+          < $(top_srcdir)/build-aux/snippet/c++defs.h \
+          > $@-t && \
+        mv $@-t $@
+MOSTLYCLEANFILES += c++defs.h c++defs.h-t
+
+CXXDEFS_H=c++defs.h
+
+EXTRA_DIST += $(top_srcdir)/build-aux/snippet/c++defs.h
+
+## end   gnulib module snippet/c++defs
+
+## begin gnulib module snippet/warn-on-use
+
+BUILT_SOURCES += warn-on-use.h
+# The warn-on-use.h that gets inserted into generated .h files is the same as
+# build-aux/snippet/warn-on-use.h, except that it has the copyright header cut
+# off.
+warn-on-use.h: $(top_srcdir)/build-aux/snippet/warn-on-use.h
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        sed -n -e '/^.ifndef/,$$p' \
+          < $(top_srcdir)/build-aux/snippet/warn-on-use.h \
+          > $@-t && \
+        mv $@-t $@
+MOSTLYCLEANFILES += warn-on-use.h warn-on-use.h-t
+
+WARN_ON_USE_H=warn-on-use.h
+
+EXTRA_DIST += $(top_srcdir)/build-aux/snippet/warn-on-use.h
+
+## end   gnulib module snippet/warn-on-use
+
+## begin gnulib module stat
+
+if gl_GNULIB_ENABLED_stat
+
+endif
+EXTRA_DIST += stat.c
+
+EXTRA_libgnu_a_SOURCES += stat.c
+
+## end   gnulib module stat
+
+## begin gnulib module stat-time
+
+libgnu_a_SOURCES += stat-time.c
+
+EXTRA_DIST += stat-time.h
+
+## end   gnulib module stat-time
+
+## begin gnulib module stdalign
+
+BUILT_SOURCES += $(STDALIGN_H)
+
+# We need the following in order to create <stdalign.h> when the system
+# doesn't have one that works.
+if GL_GENERATE_STDALIGN_H
+stdalign.h: stdalign.in.h $(top_builddir)/config.status
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+          cat $(srcdir)/stdalign.in.h; \
+        } > $@-t && \
+        mv $@-t $@
+else
+stdalign.h: $(top_builddir)/config.status
+        rm -f $@
+endif
+MOSTLYCLEANFILES += stdalign.h stdalign.h-t
+
+EXTRA_DIST += stdalign.in.h
+
+## end   gnulib module stdalign
+
+## begin gnulib module stdarg
+
+BUILT_SOURCES += $(STDARG_H)
+
+# We need the following in order to create <stdarg.h> when the system
+# doesn't have one that works with the given compiler.
+if GL_GENERATE_STDARG_H
+stdarg.h: stdarg.in.h $(top_builddir)/config.status
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+          sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+              -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+              -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+              -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+              -e 's|@''NEXT_STDARG_H''@|$(NEXT_STDARG_H)|g' \
+              < $(srcdir)/stdarg.in.h; \
+        } > $@-t && \
+        mv $@-t $@
+else
+stdarg.h: $(top_builddir)/config.status
+        rm -f $@
+endif
+MOSTLYCLEANFILES += stdarg.h stdarg.h-t
+
+EXTRA_DIST += stdarg.in.h
+
+## end   gnulib module stdarg
+
+## begin gnulib module stdbool
+
+BUILT_SOURCES += $(STDBOOL_H)
+
+# We need the following in order to create <stdbool.h> when the system
+# doesn't have one that works.
+if GL_GENERATE_STDBOOL_H
+stdbool.h: stdbool.in.h $(top_builddir)/config.status
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+          sed -e 's/@''HAVE__BOOL''@/$(HAVE__BOOL)/g' < $(srcdir)/stdbool.in.h; \
+        } > $@-t && \
+        mv $@-t $@
+else
+stdbool.h: $(top_builddir)/config.status
+        rm -f $@
+endif
+MOSTLYCLEANFILES += stdbool.h stdbool.h-t
+
+EXTRA_DIST += stdbool.in.h
+
+## end   gnulib module stdbool
+
+## begin gnulib module stddef
+
+BUILT_SOURCES += $(STDDEF_H)
+
+# We need the following in order to create <stddef.h> when the system
+# doesn't have one that works with the given compiler.
+if GL_GENERATE_STDDEF_H
+stddef.h: stddef.in.h $(top_builddir)/config.status
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+          sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+              -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+              -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+              -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+              -e 's|@''NEXT_STDDEF_H''@|$(NEXT_STDDEF_H)|g' \
+              -e 's|@''HAVE_WCHAR_T''@|$(HAVE_WCHAR_T)|g' \
+              -e 's|@''REPLACE_NULL''@|$(REPLACE_NULL)|g' \
+              < $(srcdir)/stddef.in.h; \
+        } > $@-t && \
+        mv $@-t $@
+else
+stddef.h: $(top_builddir)/config.status
+        rm -f $@
+endif
+MOSTLYCLEANFILES += stddef.h stddef.h-t
+
+EXTRA_DIST += stddef.in.h
+
+## end   gnulib module stddef
+
+## begin gnulib module stdint
+
+BUILT_SOURCES += $(STDINT_H)
+
+# We need the following in order to create <stdint.h> when the system
+# doesn't have one that works with the given compiler.
+if GL_GENERATE_STDINT_H
+stdint.h: stdint.in.h $(top_builddir)/config.status
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+          sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+              -e 's/@''HAVE_STDINT_H''@/$(HAVE_STDINT_H)/g' \
+              -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+              -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+              -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+              -e 's|@''NEXT_STDINT_H''@|$(NEXT_STDINT_H)|g' \
+              -e 's/@''HAVE_SYS_TYPES_H''@/$(HAVE_SYS_TYPES_H)/g' \
+              -e 's/@''HAVE_INTTYPES_H''@/$(HAVE_INTTYPES_H)/g' \
+              -e 's/@''HAVE_SYS_INTTYPES_H''@/$(HAVE_SYS_INTTYPES_H)/g' \
+              -e 's/@''HAVE_SYS_BITYPES_H''@/$(HAVE_SYS_BITYPES_H)/g' \
+              -e 's/@''HAVE_WCHAR_H''@/$(HAVE_WCHAR_H)/g' \
+              -e 's/@''HAVE_LONG_LONG_INT''@/$(HAVE_LONG_LONG_INT)/g' \
+              -e 's/@''HAVE_UNSIGNED_LONG_LONG_INT''@/$(HAVE_UNSIGNED_LONG_LONG_INT)/g' \
+              -e 's/@''APPLE_UNIVERSAL_BUILD''@/$(APPLE_UNIVERSAL_BUILD)/g' \
+              -e 's/@''BITSIZEOF_PTRDIFF_T''@/$(BITSIZEOF_PTRDIFF_T)/g' \
+              -e 's/@''PTRDIFF_T_SUFFIX''@/$(PTRDIFF_T_SUFFIX)/g' \
+              -e 's/@''BITSIZEOF_SIG_ATOMIC_T''@/$(BITSIZEOF_SIG_ATOMIC_T)/g' \
+              -e 's/@''HAVE_SIGNED_SIG_ATOMIC_T''@/$(HAVE_SIGNED_SIG_ATOMIC_T)/g' \
+              -e 's/@''SIG_ATOMIC_T_SUFFIX''@/$(SIG_ATOMIC_T_SUFFIX)/g' \
+              -e 's/@''BITSIZEOF_SIZE_T''@/$(BITSIZEOF_SIZE_T)/g' \
+              -e 's/@''SIZE_T_SUFFIX''@/$(SIZE_T_SUFFIX)/g' \
+              -e 's/@''BITSIZEOF_WCHAR_T''@/$(BITSIZEOF_WCHAR_T)/g' \
+              -e 's/@''HAVE_SIGNED_WCHAR_T''@/$(HAVE_SIGNED_WCHAR_T)/g' \
+              -e 's/@''WCHAR_T_SUFFIX''@/$(WCHAR_T_SUFFIX)/g' \
+              -e 's/@''BITSIZEOF_WINT_T''@/$(BITSIZEOF_WINT_T)/g' \
+              -e 's/@''HAVE_SIGNED_WINT_T''@/$(HAVE_SIGNED_WINT_T)/g' \
+              -e 's/@''WINT_T_SUFFIX''@/$(WINT_T_SUFFIX)/g' \
+              < $(srcdir)/stdint.in.h; \
+        } > $@-t && \
+        mv $@-t $@
+else
+stdint.h: $(top_builddir)/config.status
+        rm -f $@
+endif
+MOSTLYCLEANFILES += stdint.h stdint.h-t
+
+EXTRA_DIST += stdint.in.h
+
+## end   gnulib module stdint
+
+## begin gnulib module strftime
+
+libgnu_a_SOURCES += strftime.c
+
+EXTRA_DIST += strftime.h
+
+## end   gnulib module strftime
+
+## begin gnulib module strtoimax
+
+
+EXTRA_DIST += strtoimax.c
+
+EXTRA_libgnu_a_SOURCES += strtoimax.c
+
+## end   gnulib module strtoimax
+
+## begin gnulib module strtoll
+
+if gl_GNULIB_ENABLED_strtoll
+
+endif
+EXTRA_DIST += strtol.c strtoll.c
+
+EXTRA_libgnu_a_SOURCES += strtol.c strtoll.c
+
+## end   gnulib module strtoll
+
+## begin gnulib module strtoull
+
+if gl_GNULIB_ENABLED_strtoull
+
+endif
+EXTRA_DIST += strtol.c strtoul.c strtoull.c
+
+EXTRA_libgnu_a_SOURCES += strtol.c strtoul.c strtoull.c
+
+## end   gnulib module strtoull
+
+## begin gnulib module strtoumax
+
+
+EXTRA_DIST += strtoimax.c strtoumax.c
+
+EXTRA_libgnu_a_SOURCES += strtoimax.c strtoumax.c
+
+## end   gnulib module strtoumax
+
+## begin gnulib module symlink
+
+
+EXTRA_DIST += symlink.c
+
+EXTRA_libgnu_a_SOURCES += symlink.c
+
+## end   gnulib module symlink
+
+## begin gnulib module time_r
+
+
+EXTRA_DIST += time_r.c
+
+EXTRA_libgnu_a_SOURCES += time_r.c
+
+## end   gnulib module time_r
+
+## begin gnulib module timespec
+
+libgnu_a_SOURCES += timespec.c
+
+EXTRA_DIST += timespec.h
+
+## end   gnulib module timespec
+
+## begin gnulib module timespec-add
+
+libgnu_a_SOURCES += timespec-add.c
+
+## end   gnulib module timespec-add
+
+## begin gnulib module timespec-sub
+
+libgnu_a_SOURCES += timespec-sub.c
+
+## end   gnulib module timespec-sub
+
+## begin gnulib module u64
+
+libgnu_a_SOURCES += u64.c
+
+EXTRA_DIST += u64.h
+
+## end   gnulib module u64
+
+## begin gnulib module unsetenv
+
+
+EXTRA_DIST += unsetenv.c
+
+EXTRA_libgnu_a_SOURCES += unsetenv.c
+
+## end   gnulib module unsetenv
+
+## begin gnulib module utimens
+
+libgnu_a_SOURCES += utimens.c
+
+EXTRA_DIST += utimens.h
+
+## end   gnulib module utimens
+
+## begin gnulib module verify
+
+if gl_GNULIB_ENABLED_verify
+
+endif
+EXTRA_DIST += verify.h
+
+## end   gnulib module verify
+
+## begin gnulib module xalloc-oversized
+
+if gl_GNULIB_ENABLED_682e609604ccaac6be382e4ee3a4eaec
+
+endif
+EXTRA_DIST += xalloc-oversized.h
+
+## end   gnulib module xalloc-oversized
+
+
+mostlyclean-local: mostlyclean-generic
+        @for dir in '' $(MOSTLYCLEANDIRS); do \
+          if test -n "$$dir" && test -d $$dir; then \
+            echo "rmdir $$dir"; rmdir $$dir; \
+          fi; \
+        done; \
+        :
diff --git a/nt/inc/ms-w32.h b/nt/inc/ms-w32.h
index 9ff03994be2..29c8e383893 100644
--- a/nt/inc/ms-w32.h
+++ b/nt/inc/ms-w32.h
@@ -67,7 +67,9 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #endif
 
 #if (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
-#define HAVE___BUILTIN_UNWIND_INIT 1
+# ifndef HAVE___BUILTIN_UNWIND_INIT
+#  define HAVE___BUILTIN_UNWIND_INIT 1
+# endif
 #endif
 
 /* This isn't perfect, as some systems might have the page file in
@@ -99,8 +101,12 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #endif
 
 #ifdef __GNUC__
-# define restrict __restrict__
+/* config.h may have defined already.  */
+# ifndef restrict
+#  define restrict __restrict__
+# endif
 #else
+  /* FIXME: should we define to __restrict, which MSVC supports? */
 # define restrict
 #endif
 
@@ -138,9 +144,6 @@ extern char *getenv ();
 /* Make a leaner executable.  */
 #define WIN32_LEAN_AND_MEAN 1
 
-#ifdef HAVE_STRINGS_H
-#include "strings.h"
-#endif
 #include <sys/types.h>
 
 #ifndef MAXPATHLEN
@@ -148,8 +151,12 @@ extern char *getenv ();
 #endif
 
 #ifdef HAVE_NTGUI
-#define HAVE_WINDOW_SYSTEM 1
-#define HAVE_MENUS 1
+# ifndef HAVE_WINDOW_SYSTEM
+#  define HAVE_WINDOW_SYSTEM 1
+# endif
+# ifndef HAVE_MENUS
+#  define HAVE_MENUS 1
+# endif
 #endif
 
 /* Get some redefinitions in place.  */
@@ -248,9 +255,6 @@ extern int sys_unlink (const char *);
 #define execvp    _execvp
 #define fdatasync _commit
 #define fdopen    _fdopen
-#ifndef fileno
-#define fileno    _fileno
-#endif
 #define fsync     _commit
 #define ftruncate _chsize
 #define getpid    _getpid
@@ -266,9 +270,6 @@ typedef int pid_t;
 #define popen     _popen
 #define pclose    _pclose
 #define umask     _umask
-#ifndef _MSC_VER
-#define utimbuf   _utimbuf
-#endif
 #define strdup    _strdup
 #define strupr    _strupr
 #define strnicmp  _strnicmp
@@ -285,10 +286,6 @@ int _getpid (void);
    array, and triggers an error message.  */
 #include <time.h>
 #define tzname    _tzname
-#if !defined (_MSC_VER) || (_MSC_VER < 1400)
-#undef  utime
-#define utime     _utime
-#endif
 
 /* 'struct timespec' is used by time-related functions in lib/ and
    elsewhere, but we don't use lib/time.h where the structure is
@@ -327,6 +324,9 @@ extern struct tm *localtime_r (time_t const * restrict, struct tm * restrict);
 #include <io.h>
 #include <stdio.h>
 #endif  /* !_MSC_VER */
+#ifndef fileno
+#define fileno    _fileno
+#endif
 
 /* Defines that we need that aren't in the standard signal.h.  */
 #define SIGHUP  1               /* Hang up */
@@ -346,20 +346,21 @@ extern struct tm *localtime_r (time_t const * restrict, struct tm * restrict);
 #define ENOTSUP ENOSYS
 #endif
 
-/* WINDOWSNT <errno.h> doesn't define EOPNOTSUPP, and we don't have
-   'configure' working yet so we can't rely on the Gnulib replacement
-   errno.h defining EOPNOTSUPP.  Work around the problem by defining
-   it here.  */
+/* In case lib/errno.h is not used.  */
+#ifndef EOPNOTSUPP
 #define EOPNOTSUPP 130
+#endif
 
 #ifdef _MSC_VER
 typedef int sigset_t;
 typedef int ssize_t;
 #endif
 
-#ifndef _POSIX  /* MinGW64 */
+#ifdef _W64     /* MinGW64 */
+#ifndef _POSIX
 typedef _sigset_t sigset_t;
 #endif
+#endif
 
 typedef void (_CALLBACK_ *signal_handler) (int);
 extern signal_handler sys_signal (int, signal_handler);
@@ -395,10 +396,12 @@ extern int sys_kill (int, int);
 #define getdefdir(_drv, _buf)   _getdcwd (_drv, _buf, MAXPATHLEN)
 #endif
 
+#ifndef EMACS_CONFIGURATION
 extern char *get_emacs_configuration (void);
 extern char *get_emacs_configuration_options (void);
 #define EMACS_CONFIGURATION     get_emacs_configuration ()
 #define EMACS_CONFIG_OPTIONS    get_emacs_configuration_options ()
+#endif
 
 /* Define this so that winsock.h definitions don't get included with
    windows.h.  For this to have proper effect, config.h must always be
@@ -452,10 +455,14 @@ extern void * memrchr (void const *, int, size_t);
 #if defined (__MINGW32__)
 
 /* Define to 1 if the system has the type `long long int'. */
-# define HAVE_LONG_LONG_INT 1
+# ifndef HAVE_LONG_LONG_INT
+#  define HAVE_LONG_LONG_INT 1
+# endif
 
 /* Define to 1 if the system has the type `unsigned long long int'. */
-# define HAVE_UNSIGNED_LONG_LONG_INT 1
+# ifndef HAVE_UNSIGNED_LONG_LONG_INT
+#  define HAVE_UNSIGNED_LONG_LONG_INT 1
+# endif
 
 #endif
 
diff --git a/nt/inc/sys/socket.h b/nt/inc/sys/socket.h
index 6029778394b..99227d75d28 100644
--- a/nt/inc/sys/socket.h
+++ b/nt/inc/sys/socket.h
@@ -43,8 +43,9 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #undef FD_ZERO
 #endif
 
-/* avoid duplicate definition of timeval */
-#ifdef HAVE_TIMEVAL
+/* Avoid duplicate definition of timeval.  MinGW uses _TIMEVAL_DEFINED
+   in sys/time.h to avoid that.  */
+#if defined (HAVE_TIMEVAL) && defined (_MSC_VER)
 #define timeval ws_timeval
 #endif
 
@@ -62,7 +63,9 @@ typedef unsigned short uint16_t;
 #undef MUST_REDEF_SELECT
 #endif
 
-/* revert to our version of FD_SET */
+/* Revert to our version of FD_SET, but not when included from test
+   programs run by configure.  */
+#ifdef EMACS_CONFIG_H
 #undef FD_SET
 #undef FD_CLR
 #undef FD_ISSET
@@ -71,8 +74,9 @@ typedef unsigned short uint16_t;
 /* allow us to provide our own version of fd_set */
 #define fd_set ws_fd_set
 #include "w32.h"
+#endif  /* EMACS_CONFIG_H */
 
-#ifdef HAVE_TIMEVAL
+#if defined (HAVE_TIMEVAL) && defined (_MSC_VER)
 #undef timeval
 #endif
 
diff --git a/nt/inc/sys/stat.h b/nt/inc/sys/stat.h
index f6785c56477..f1d8341141e 100644
--- a/nt/inc/sys/stat.h
+++ b/nt/inc/sys/stat.h
@@ -83,6 +83,9 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #define S_TYPEISSHM(p) 0
 #define S_TYPEISTMO(p) 0
 
+#define UTIME_NOW  (-1)
+#define UTIME_OMIT (-2)
+
 struct stat {
   unsigned __int64 st_ino;      /* ino_t in sys/types.h is too narrow */
   dev_t st_dev;
@@ -99,6 +102,39 @@ struct stat {
   char             st_gname[260];
 };
 
+/* These are here to avoid compiler warnings when using wchar.h.  */
+struct _stat
+{
+        _dev_t  st_dev;         /* Equivalent to drive number 0=A 1=B ... */
+        _ino_t  st_ino;         /* Always zero ? */
+        _mode_t st_mode;        /* See above constants */
+        short   st_nlink;       /* Number of links. */
+        short   st_uid;         /* User: Maybe significant on NT ? */
+        short   st_gid;         /* Group: Ditto */
+        _dev_t  st_rdev;        /* Seems useless (not even filled in) */
+        _off_t  st_size;        /* File size in bytes */
+        time_t  st_atime;       /* Accessed date (always 00:00 hrs local
+                                 * on FAT) */
+        time_t  st_mtime;       /* Modified time */
+        time_t  st_ctime;       /* Creation time */
+};
+
+#if defined (__MSVCRT__)
+struct _stati64 {
+    _dev_t st_dev;
+    _ino_t st_ino;
+    _mode_t st_mode;
+    short st_nlink;
+    short st_uid;
+    short st_gid;
+    _dev_t st_rdev;
+    __int64 st_size;
+    time_t st_atime;
+    time_t st_mtime;
+    time_t st_ctime;
+};
+#endif
+
 /* Internal variable for asking 'stat'/'lstat' to produce accurate
    info about owner and group of files. */
 extern int w32_stat_get_owner_group;
diff --git a/nt/inc/sys/time.h b/nt/inc/sys/time.h
index 80c725385bb..87ad9d3ff0d 100644
--- a/nt/inc/sys/time.h
+++ b/nt/inc/sys/time.h
@@ -9,12 +9,23 @@
 /* The guards are for MinGW64, which defines these structs on its
    system headers which are included by ms-w32.h.  */
 #ifndef _W64
+/* Allow inclusion of sys/time.h and winsock2.h in any order.  Needed
+   for running the configure test, which is only relevant to MinGW.  */
+#ifndef _TIMEVAL_DEFINED
+#define _TIMEVAL_DEFINED
 struct timeval
 {
   long          tv_sec;         /* seconds */
   long          tv_usec;        /* microseconds */
 };
-#endif
+#define timerisset(tvp)  ((tvp)->tv_sec || (tvp)->tv_usec)
+#define timercmp(tvp, uvp, cmp) \
+        (((tvp)->tv_sec != (uvp)->tv_sec) ? \
+        ((tvp)->tv_sec cmp (uvp)->tv_sec) : \
+        ((tvp)->tv_usec cmp (uvp)->tv_usec))
+#define timerclear(tvp)  (tvp)->tv_sec = (tvp)->tv_usec = 0
+#endif /* _TIMEVAL_DEFINED */
+#endif /* _W64 */
 
 #ifndef _TIMEZONE_DEFINED
 struct timezone
@@ -24,7 +35,10 @@ struct timezone
 };
 #endif
 
-void gettimeofday (struct timeval *, struct timezone *);
+/* This needs to be compatible with Posix signature, in order to pass
+   the configure test for the type of the second argument.  See
+   m4/gettimeofday.m4.  */
+int gettimeofday (struct timeval *restrict, struct timezone *restrict);
 
 #define ITIMER_REAL      0
 #define ITIMER_PROF      1
diff --git a/nt/inc/unistd.h b/nt/inc/unistd.h
index e07c46533f7..8ad8cf213b1 100644
--- a/nt/inc/unistd.h
+++ b/nt/inc/unistd.h
@@ -3,6 +3,9 @@
 #ifndef _UNISTD_H
 #define _UNISTD_H
 
+#include <sys/types.h>
+#include <pwd.h>
+
 /* On Microsoft platforms, <stdlib.h> declares 'environ'; on POSIX
    platforms, <unistd.h> does.  Every file in Emacs that includes
    <unistd.h> also includes <stdlib.h>, so there's no need to declare
diff --git a/nt/makefile.w32-in b/nt/makefile.w32-in
index 4aa1ea91d44..79ca22bf44e 100644
--- a/nt/makefile.w32-in
+++ b/nt/makefile.w32-in
@@ -29,6 +29,8 @@ TMP_DIST_DIR 	= emacs-$(VERSION)
 TRES            = $(BLD)/emacs.res
 CLIENTRES       = $(BLD)/emacsclient.res
 
+LOCAL_FLAGS     = -DOLD_PATHS=1
+
 XMFLAGS         =
 
 ALL             = $(BLD)/addpm.exe $(BLD)/ddeclient.exe $(BLD)/runemacs.exe \
diff --git a/nt/mingw-cfg.site b/nt/mingw-cfg.site
new file mode 100644
index 00000000000..96cda2d624a
--- /dev/null
+++ b/nt/mingw-cfg.site
@@ -0,0 +1,106 @@
+#! /bin/sh
+# Site defaults for the MinGW configuration of GNU Emacs.
+#
+# This file's purpose is to short-circuit configure-time tests for
+# which we want to provide the results instead of letting the
+# 'configure' script do that.  This is mainly for features that
+# 'configure' tests that are implemented as part of Emacs sources, not
+# as part of system libraries.  The idea is to set shell variables
+# that appear to the script as cached values.
+#
+# For each header file foo.h you want to supply test results, set the
+# value of a shell variable ac_cv_header_foo_h.  The value should be
+# yes if the header is deemed to exist, no otherwise.  Or it could be
+# something else, if the value computed by 'configure' requires that.
+# In general, since nt/msysconfig.sh instructs GCC to use header files
+# in nt/inc, you should not need to futz with header file tests.  But
+# there are exceptions, like with getopt.h below (which is a MinGW
+# system header, but we do not want to use it).
+#
+# For each library function foo you want to supply test results, set
+# the value of a shell variable ac_cv_func_foo.  Again, the value is
+# determined by what 'configure' expects; sometimes it could be "not
+# needed" or whatever, see the examples below.  In addition, you may
+# need to set the various gl_cv_* variables for those tests that come
+# from gnulib.
+#
+# In short, examine the test in 'configure' and push the knobs that
+# are necessary to steer the test in the direction you need, by
+# judicioulsy setting variables that control the test results.
+
+# We want to use getopt.h from gnulib
+ac_cv_header_getopt_h=no
+
+# ACL functions are implemented in w32.c
+ac_cv_search_acl_get_file="none required"
+ac_cv_func_acl_get_file=yes
+ac_cv_func_acl_set_file=yes
+ac_cv_func_acl_free=yes
+ac_cv_func_acl_from_text=yes
+gl_cv_func_working_acl_get_file=yes
+# Autoconf's test program is not smart enough, and fails to detect gethostname
+ac_cv_func_gethostname=yes
+# Implemented as sys_select in w32proc.c
+ac_cv_func_select=yes
+ac_cv_func_pselect=yes
+gl_cv_sig_pselect=yes
+gl_cv_func_pselect_detects_ebadf=yes
+# Implemented as sys_shutdown in w32.c
+ac_cv_func_shutdown=yes
+# Implemented in w32proc.c
+ac_cv_func_setitimer=yes
+# Implemented as sys_sendto in w32.c
+ac_cv_func_sendto=yes
+# Implemented as sys_recvfrom in w32.c
+ac_cv_func_recvfrom=yes
+# Implemented as sys_getsockname in w32.c
+ac_cv_func_getsockname=yes
+# Implemented as sys_getpeername in w32.c
+ac_cv_func_getpeername=yes
+# Implemented as sys_socket in w32.c
+ac_cv_func_socket=yes
+# Implemented in w32.c
+ac_cv_func_readlink=yes
+ac_cv_func_symlink=yes
+# Avoid run-time tests of readlink and symlink, which will fail
+gl_cv_func_readlink_works=yes
+gl_cv_func_symlink_works=yes
+ac_cv_func_readlinkat=yes
+ac_cv_func_faccessat=yes
+# We don't need fdopendir
+ac_cv_func_fdopendir="not-needed"
+gl_cv_func_fdopendir_works="no-but-not-needed-so-yes"
+# Implemented in w32.c
+ac_cv_func_lstat=yes
+gl_cv_func_lstat_dereferences_slashed_symlink=yes
+ac_cv_func_fstatat=yes
+gl_cv_func_fstatat_zero_flag=yes
+# Aliased to _commit in ms-w32.h
+ac_cv_func_fsync=yes
+ac_cv_func_fdatasync=yes
+# Implemented in w32proc.c
+ac_cv_func_pthread_sigmask=yes
+# Avoid gnulib replacement
+gl_threads_api=posix
+gl_cv_func_pthread_sigmask_return_works=yes
+gl_cv_func_pthread_sigmask_unblock_works="not relevant"
+# Implemented in w32proc.c
+emacs_cv_langinfo_codeset=yes
+# Declared in ms-w32.h
+ac_cv_have_decl_alarm=yes
+# Avoid including the gnulib dup2 module
+gl_cv_func_dup2_works=yes
+# Defined in w32.c
+ac_cv_func_getloadavg=yes
+# Avoid compiling gnulib mktime
+gl_cv_func_working_mktime=yes
+# Implemented in w32.c
+ac_cv_have_decl_unsetenv=yes
+ac_cv_func_unsetenv=yes
+gt_cv_func_unsetenv_ret='int'
+gl_cv_func_unsetenv_works=yes
+gl_cv_func_stat_dir_slash=yes
+gl_cv_func_stat_file_slash=yes
+ac_cv_func_random=yes
+# Implemented in w32.c as sys_putenv
+gl_cv_func_svid_putenv=yes
diff --git a/nt/msysconfig.sh b/nt/msysconfig.sh
new file mode 100644
index 00000000000..95e56f64c42
--- /dev/null
+++ b/nt/msysconfig.sh
@@ -0,0 +1,39 @@
+#! /bin/sh
+### msysconfig.sh - Run the top-level 'configure' script as approriate
+### for the MinGW/MSYS build of a native MS-Windows port of Emacs.
+
+## Copyright (C) 2013 Free Software Foundation, Inc.
+
+## Author: Eli Zaretskii <eliz@gnu.org>
+
+## This file is part of GNU Emacs.
+
+## GNU Emacs is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+
+## GNU Emacs is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+
+## You should have received a copy of the GNU General Public License
+## along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+### Commentary:
+
+## The Posix 'configure' script needs a few tweaks to produce desired
+## results when running under MSYS with the purpose of configuring
+## Emacs for the MinGW MS-Windows build.  Rather than asking users to
+## type these tweaks every time they configure the package, we provide
+## this helper script which takes care of the mundane things.
+
+### Code:
+
+srcdir=`dirname "$0"`
+parent=`dirname "$srcdir"`
+
+## The nt/mingw-cfg.site file provides various autoconf variables that
+## are needed for a successful MinGW build.
+CONFIG_SITE="$srcdir/mingw-cfg.site" $parent/configure "$@"
diff --git a/src/ChangeLog b/src/ChangeLog
index c45ec824919..e5308e2db3b 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,27 @@
+2013-05-16  Eli Zaretskii  <eliz@gnu.org>
+
+        * w32.c: Include epaths.h.
+        (init_environment): Use cmdproxy.exe without leading directories.
+        Support emacs.exe in src; point SHELL to cmdproxy in ../nt in that
+        case.
+        (gettimeofday): Adjust signature and return value to Posix
+        expectations.
+
+        * unexw32.c (open_output_file): Delete the existing emacs.exe
+        before creating it, to break the hard link to the versioned
+        executable.
+
+        * Makefile.in (EMACS_MANIFEST, CM_OBJ, TEMACS_POST_LINK)
+        (ADDSECTION, EMACS_HEAPSIZE, MINGW_TEMACS_POST_LINK)
+        (FIRSTFILE_OBJ): New variables.
+        (W32_RES): Rename to EMACSRES.  All users changed.
+        (base_obj): Use $(CM_OBJ).
+        (ALLOBJS): Use $(FIRSTFILE_OBJ).
+        (emacs$(EXEEXT)): Depend on $(ADDSECTION).
+        (temacs$(EXEEXT)): Use $(TEMACS_POST_LINK), and move
+        $(W32_RES_LINK) before $(LIBES).
+        (emacs.res): Depend on $(EMACS_MANIFEST).  Put emacs.rc in nt.
+
 2013-05-15  Stefan Monnier  <monnier@iro.umontreal.ca>
 
         * makefile.w32-in (DOC): Use just "DOC".
diff --git a/src/Makefile.in b/src/Makefile.in
index 80d23b2d58b..c7a18363a5a 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -267,10 +267,13 @@ W32_OBJ=@W32_OBJ@
 W32_LIBS=@W32_LIBS@
 
 ## emacs.res if HAVE_W32
-W32_RES=@W32_RES@
+EMACSRES = @EMACSRES@
+## emacs-*.manifest if HAVE_W32
+EMACS_MANIFEST = @EMACS_MANIFEST@
 ## If HAVE_W32, compiler arguments for including
 ## the resource file in the binary.
-## XXX -Wl,-b -Wl,pe-i386 -Wl,emacs.res
+## Cygwin: -Wl,emacs.res
+## MinGW: emacs.res
 W32_RES_LINK=@W32_RES_LINK@
 
 ## Empty if !HAVE_X_WINDOWS
@@ -279,6 +282,9 @@ W32_RES_LINK=@W32_RES_LINK@
 ## else xfont.o
 FONT_OBJ=@FONT_OBJ@
 
+## Empty for MinGW, cm.o for the rest.
+CM_OBJ=@CM_OBJ@
+
 LIBGPM = @LIBGPM@
 
 ## -lresolv, or empty.
@@ -297,6 +303,14 @@ GETLOADAVG_LIBS = @GETLOADAVG_LIBS@
 
 RUN_TEMACS = `/bin/pwd`/temacs
 
+## Invoke ../nt/addsection for MinGW, ":" elsewhere.
+TEMACS_POST_LINK = @TEMACS_POST_LINK@
+ADDSECTION = @ADDSECTION@
+EMACS_HEAPSIZE = @EMACS_HEAPSIZE@
+MINGW_TEMACS_POST_LINK = \
+ mv temacs$(EXEEXT) temacs.tmp; \
+ ../nt/addsection temacs.tmp temacs$(EXEEXT) EMHEAP $(EMACS_HEAPSIZE)
+
 UNEXEC_OBJ = @UNEXEC_OBJ@
 
 CANNOT_DUMP=@CANNOT_DUMP@
@@ -339,7 +353,7 @@ ALL_OBJC_CFLAGS=$(ALL_CFLAGS) $(GNU_OBJC_CFLAGS)
 ## be dumped as pure by dump-emacs.
 base_obj = dispnew.o frame.o scroll.o xdisp.o menu.o $(XMENU_OBJ) window.o \
         charset.o coding.o category.o ccl.o character.o chartab.o bidi.o \
-        cm.o term.o terminal.o xfaces.o $(XOBJ) $(GTK_OBJ) $(DBUS_OBJ) \
+        $(CM_OBJ) term.o terminal.o xfaces.o $(XOBJ) $(GTK_OBJ) $(DBUS_OBJ) \
         emacs.o keyboard.o macros.o keymap.o sysdep.o \
         buffer.o filelock.o insdel.o marker.o \
         minibuf.o fileio.o dired.o \
@@ -377,9 +391,9 @@ VMLIMIT_OBJ=@VMLIMIT_OBJ@
 ## ralloc.o if !SYSTEM_MALLOC && REL_ALLOC, else empty.
 RALLOC_OBJ=@RALLOC_OBJ@
 
-## Empty on Cygwin, lastfile.o elsewhere.
+## Empty on Cygwin and MinGW, lastfile.o elsewhere.
 PRE_ALLOC_OBJ=@PRE_ALLOC_OBJ@
-## lastfile.o on Cygwin, empty elsewhere.
+## lastfile.o on Cygwin and MinGW, empty elsewhere.
 POST_ALLOC_OBJ=@POST_ALLOC_OBJ@
 
 ## List of object files that make-docfile should not be told about.
@@ -387,7 +401,9 @@ otherobj= $(TERMCAP_OBJ) $(PRE_ALLOC_OBJ) $(GMALLOC_OBJ) $(RALLOC_OBJ) \
   $(POST_ALLOC_OBJ) $(WIDGET_OBJ) $(LIBOBJS)
 
 ## All object files linked into temacs.  $(VMLIMIT_OBJ) should be first.
-ALLOBJS = $(VMLIMIT_OBJ) $(obj) $(otherobj)
+## (On MinGW, firstfile.o should be before vm-limit.o.)
+FIRSTFILE_OBJ=@FIRSTFILE_OBJ@
+ALLOBJS = $(FIRSTFILE_OBJ) $(VMLIMIT_OBJ) $(obj) $(otherobj)
 
 ## Configure inserts the file lisp.mk at this point, defining $lisp.
 @lisp_frag@
@@ -416,7 +432,8 @@ $(leimdir)/leim-list.el: bootstrap-emacs$(EXEEXT)
 ## Strictly speaking, emacs does not depend directly on all of $lisp,
 ## since not all pieces are used on all platforms.  But DOC depends
 ## on all of $lisp, and emacs depends on DOC, so it is ok to use $lisp here.
-emacs$(EXEEXT): temacs$(EXEEXT) $(etc)/DOC $(lisp) $(leimdir)/leim-list.el
+emacs$(EXEEXT): temacs$(EXEEXT) $(ADDSECTION) \
+                $(etc)/DOC $(lisp) $(leimdir)/leim-list.el
         if test "$(CANNOT_DUMP)" = "yes"; then \
           rm -f emacs$(EXEEXT); \
           ln temacs$(EXEEXT) emacs$(EXEEXT); \
@@ -468,10 +485,10 @@ $(lib)/libgnu.a: $(config_h)
         cd $(lib) && $(MAKE) libgnu.a
 
 temacs$(EXEEXT): stamp-oldxmenu $(ALLOBJS) \
-                 $(lib)/libgnu.a $(W32_RES)
+                 $(lib)/libgnu.a $(EMACSRES)
         $(CC) $(ALL_CFLAGS) $(TEMACS_LDFLAGS) $(LDFLAGS) \
-          -o temacs $(ALLOBJS) $(lib)/libgnu.a $(LIBES) \
-          $(W32_RES_LINK)
+          -o temacs $(ALLOBJS) $(lib)/libgnu.a $(W32_RES_LINK) $(LIBES)
+        $(TEMACS_POST_LINK)
         test "$(CANNOT_DUMP)" = "yes" || \
           test "X$(PAXCTL)" = X || $(PAXCTL) -r temacs$(EXEEXT)
 
@@ -514,8 +531,9 @@ doc.o: buildobj.h
 
 emacs.res: $(ntsource)/emacs.rc \
            $(ntsource)/icons/emacs.ico \
-           $(ntsource)/emacs-x86.manifest
-        $(WINDRES) -O COFF -o $@ $(ntsource)/emacs.rc
+           $(ntsource)/$(EMACS_MANIFEST)
+        $(WINDRES) -O COFF --include-dir=$(srcdir)/../nt \
+          -o $@ $(ntsource)/emacs.rc
 
 ns-app: emacs$(EXEEXT)
         cd ../nextstep && $(MAKE) $(MFLAGS) all
diff --git a/src/unexw32.c b/src/unexw32.c
index e8b553a87d3..a01ac799592 100644
--- a/src/unexw32.c
+++ b/src/unexw32.c
@@ -159,6 +159,14 @@ open_output_file (file_data *p_file, char *filename, unsigned long size)
   HANDLE file_mapping;
   void  *file_base;
 
+  /* We delete any existing FILENAME because loadup.el will create a
+     hard link to it under the name emacs-XX.YY.ZZ.nn.exe.  Evidently,
+     overwriting a file on Unix breaks any hard links to it, but that
+     doesn't happen on Windows.  If we don't delete the file before
+     creating it, all the emacs-XX.YY.ZZ.nn.exe end up being hard
+     links to the same file, which defeats the purpose of these hard
+     links: being able to run previous builds.  */
+  DeleteFile (filename);
   file = CreateFile (filename, GENERIC_READ | GENERIC_WRITE, 0, NULL,
                      CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
   if (file == INVALID_HANDLE_VALUE)
diff --git a/src/w32.c b/src/w32.c
index 431826c4b82..7d63c73eb18 100644
--- a/src/w32.c
+++ b/src/w32.c
@@ -65,6 +65,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #undef localtime
 
 #include "lisp.h"
+#include "epaths.h"     /* for SHELL */
 
 #include <pwd.h>
 #include <grp.h>
@@ -2018,7 +2019,7 @@ init_environment (char ** argv)
       {"PRELOAD_WINSOCK", NULL},
       {"emacs_dir", "C:/emacs"},
       {"EMACSLOADPATH", NULL},
-      {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"},
+      {"SHELL", "cmdproxy.exe"}, /* perhaps it is somewhere on PATH */
       {"EMACSDATA", NULL},
       {"EMACSPATH", NULL},
       {"INFOPATH", NULL},
@@ -2094,9 +2095,12 @@ init_environment (char ** argv)
         emacs_abort ();
       *p = 0;
 
-      if ((p = _mbsrchr (modname, '\\')) && xstrcasecmp (p, "\\bin") == 0)
+      if ((p = _mbsrchr (modname, '\\'))
+          /* From bin means installed Emacs, from src means uninstalled.  */
+          && (xstrcasecmp (p, "\\bin") == 0 || xstrcasecmp (p, "\\src") == 0))
         {
           char buf[SET_ENV_BUF_SIZE];
+          int within_build_tree = xstrcasecmp (p, "\\src") == 0;
 
           *p = 0;
           for (p = modname; *p; p = CharNext (p))
@@ -2104,6 +2108,15 @@ init_environment (char ** argv)
 
           _snprintf (buf, sizeof (buf)-1, "emacs_dir=%s", modname);
           _putenv (strdup (buf));
+          /* If we are running from the Posix-like build tree, define
+             SHELL to point to our own cmdproxy.  The loop below will
+             then disregard PATH_EXEC and the default value.  */
+          if (within_build_tree)
+            {
+              _snprintf (buf, sizeof (buf) - 1,
+                         "SHELL=%s/nt/cmdproxy.exe", modname);
+              _putenv (strdup (buf));
+            }
         }
       /* Handle running emacs from the build directory: src/oo-spd/i386/  */
 
@@ -2139,16 +2152,60 @@ init_environment (char ** argv)
         if (!getenv (env_vars[i].name))
           {
             int dont_free = 0;
+            char bufc[SET_ENV_BUF_SIZE];
 
             if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL
                 /* Also ignore empty environment variables.  */
                 || *lpval == 0)
               {
                 xfree (lpval);
-                lpval = env_vars[i].def_value;
-                dwType = REG_EXPAND_SZ;
                 dont_free = 1;
-                if (!strcmp (env_vars[i].name, "HOME") && !appdata)
+                if (strcmp (env_vars[i].name, "SHELL") == 0)
+                  {
+                    /* Look for cmdproxy.exe in every directory in
+                       PATH_EXEC.  FIXME: This does not find cmdproxy
+                       in nt/ when we run uninstalled.  */
+                    char fname[MAX_PATH];
+                    const char *pstart = PATH_EXEC, *pend;
+
+                    do {
+                      pend = _mbschr (pstart, ';');
+                      if (!pend)
+                        pend = pstart + strlen (pstart);
+                      /* Be defensive against series of ;;; characters.  */
+                      if (pend > pstart)
+                        {
+                          strncpy (fname, pstart, pend - pstart);
+                          fname[pend - pstart] = '/';
+                          strcpy (&fname[pend - pstart + 1], "cmdproxy.exe");
+                          ExpandEnvironmentStrings ((LPSTR) fname, bufc,
+                                                    sizeof (bufc));
+                          if (check_existing (bufc))
+                            {
+                              lpval = bufc;
+                              dwType = REG_SZ;
+                              break;
+                            }
+                        }
+                      if (*pend)
+                        pstart = pend + 1;
+                      else
+                        pstart = pend;
+                      if (!*pstart)
+                        {
+                          /* If not found in any directory, use the
+                             default as the last resort.  */
+                          lpval = env_vars[i].def_value;
+                          dwType = REG_EXPAND_SZ;
+                        }
+                    } while (*pstart);
+                  }
+                else
+                  {
+                    lpval = env_vars[i].def_value;
+                    dwType = REG_EXPAND_SZ;
+                  }
+                if (strcmp (env_vars[i].name, "HOME") == 0 && !appdata)
                   Vdelayed_warnings_list
                     = Fcons (listn (CONSTYPE_HEAP, 2,
                                     intern ("initialization"),
@@ -2394,8 +2451,8 @@ get_emacs_configuration_options (void)
 #include <sys/timeb.h>
 
 /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95).  */
-void
-gettimeofday (struct timeval *tv, struct timezone *tz)
+int
+gettimeofday (struct timeval *restrict tv, struct timezone *restrict tz)
 {
   struct _timeb tb;
   _ftime (&tb);
@@ -2413,6 +2470,7 @@ gettimeofday (struct timeval *tv, struct timezone *tz)
       tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich  */
       tz->tz_dsttime = tb.dstflag;      /* type of dst correction  */
     }
+  return 0;
 }
 
 /* Emulate fdutimens.  */