On msdos, set LIBS_SYSTEM with config.bat, not cpp.

* config.bat [HAVE_X11]: Run sed3x.inp on lib-src/Makefile.

* src/Makefile.in (LIBS_SYSTEM) [MSDOS]: Do not reset.
* src/s/msdos.h (MSDOS_LIBS_SYSTEM): Remove.

* msdos/sed1x.inp (LIBS_SYSTEM): Edit to -lxext -lsys.
* msdos/sed3x.inp: New file.

* lib-src/Makefile.in (LIBS_SYSTEM) [MSDOS]: Do not reset.
(config.h) [MSDOS]: Do not include.

3 files changed, 5 insertions, 3 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index fab6d2034cc..8bac6573c23 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2010-05-11  Glenn Morris  <rgm@gnu.org>
+
+        * Makefile.in (LIBS_SYSTEM) [MSDOS]: Do not reset.
+        * s/msdos.h (MSDOS_LIBS_SYSTEM): Remove.
+
 2010-05-10  Eli Zaretskii  <eliz@gnu.org>
 
         * xdisp.c (init_iterator): Don't turn on bidi reordering in
diff --git a/src/Makefile.in b/src/Makefile.in
index 69e37fb236a..292429fc7b4 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -322,7 +322,6 @@ LD=ld
 #endif
 
 #ifdef MSDOS
-LIBS_SYSTEM = MSDOS_LIBS_SYSTEM
 #ifdef HAVE_X_WINDOWS
 MSDOS_OBJ = dosfns.o msdos.o
 #else
diff --git a/src/s/msdos.h b/src/s/msdos.h
index a594bb850f4..4d7ca08d3c0 100644
--- a/src/s/msdos.h
+++ b/src/s/msdos.h
@@ -140,9 +140,7 @@ You lose; /* Emacs for DOS must be compiled with DJGPP */
    commentary below, in the non-X branch.  The 140KB number was
    measured on GNU/Linux and on MS-WIndows.  */
 #define SYSTEM_PURESIZE_EXTRA (-170000+140000)
-#define MSDOS_LIBS_SYSTEM -lxext -lsys
 #else
-#define MSDOS_LIBS_SYSTEM
 /* We need a little extra space, see ../../lisp/loadup.el.
    As of 20091024, DOS-specific files use up 62KB of pure space.  But
    overall, we end up wasting 130KB of pure space, because