Add loadable modules using Daniel Colascione's ideas.scratch/dynamic-modules-2

See https://lists.gnu.org/archive/html/emacs-devel/2015-02/msg00960.html

* src/Makefile.in (base_obj): add module.o
  (LIBES): add -lltdl

* src/emacs.c (main): add syms_of_module

* src/lisp.h: add syms_of_module

* src/emacs_module.h: New file; emacs API for modules.

* src/module.c: New file; implement API.

* modules/basic/Makefile: New file; build example module on Linux.

* modules/basic/basic.c: New file; simple example module.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/Makefile.in b/src/Makefile.in
index 172fa8e47cd..c212c48bc5b 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -376,7 +376,7 @@ base_obj = dispnew.o frame.o scroll.o xdisp.o menu.o $(XMENU_OBJ) window.o \
         minibuf.o fileio.o dired.o \
         cmds.o casetab.o casefiddle.o indent.o search.o regex.o undo.o \
         alloc.o data.o doc.o editfns.o callint.o \
-        eval.o floatfns.o fns.o font.o print.o lread.o \
+        eval.o floatfns.o fns.o font.o print.o lread.o module.o \
         syntax.o $(UNEXEC_OBJ) bytecode.o \
         process.o gnutls.o callproc.o \
         region-cache.o sound.o atimer.o \
@@ -467,7 +467,7 @@ LIBES = $(LIBS) $(W32_LIBS) $(LIBS_GNUSTEP) $(LIBX_BASE) $(LIBIMAGE) \
    $(LIBS_TERMCAP) $(GETLOADAVG_LIBS) $(SETTINGS_LIBS) $(LIBSELINUX_LIBS) \
    $(FREETYPE_LIBS) $(FONTCONFIG_LIBS) $(LIBOTF_LIBS) $(M17N_FLT_LIBS) \
    $(LIBGNUTLS_LIBS) $(LIB_PTHREAD) \
-   $(GFILENOTIFY_LIBS) $(LIB_MATH) $(LIBZ)
+   $(GFILENOTIFY_LIBS) $(LIB_MATH) $(LIBZ) -lltdl
 
 $(leimdir)/leim-list.el: bootstrap-emacs$(EXEEXT)
         $(MAKE) -C ../leim leim-list.el EMACS="$(bootstrap_exe)"