--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/s/sol2-4.h	Mon Aug 13 08:45:50 2007 +0200
@@ -0,0 +1,44 @@
+/* Synched up with: FSF 19.31. */
+
+/* Handle Solaris 2.4.  */
+
+#include "sol2-3.h"
+
+#define SOLARIS2_4
+
+#if 0 /* FSFmacs */
+
+/* Get rid of -traditional and let const really do its thing.  */
+
+#ifdef __GNUC__
+#undef C_SWITCH_SYSTEM
+#undef const
+#endif /* __GNUC__ */
+#endif /* 0 */
+
+#undef LD_SWITCH_SYSTEM
+#ifndef __GNUC__
+#define LD_SWITCH_SYSTEM -L /usr/ccs/lib LD_SWITCH_X_SITE_AUX -R /usr/openwin/lib -L /usr/openwin/lib -R /usr/dt/lib -L /usr/dt/lib
+#else /* GCC */
+/* We use ./prefix-args because we don't know whether LD_SWITCH_X_SITE_AUX
+   has anything in it.  It can be empty.
+   This works ok in src.  Luckily lib-src does not use LD_SWITCH_SYSTEM.  */
+#define LD_SWITCH_SYSTEM -L /usr/ccs/lib \
+ `./prefix-args -Xlinker LD_SWITCH_X_SITE_AUX` -R /usr/openwin/lib -L /usr/openwin/lib -R /usr/dt/lib -L /usr/dt/lib
+#endif /* GCC */
+
+/* Gregory Neil Shapiro <gshapiro@hhmi.org> reports the Motif header files
+   are in this directory on Solaris 2.4.  */
+#define C_SWITCH_X_SYSTEM -I/usr/dt/include
+
+/* XEmacs addition: Raymond Toy says XEmacs completely misses SIGCHLD
+   when compiled with GCC 2.7.0 (but not, apparently, with SunPro C?),
+   X11R6, and Solaris 2.4.
+
+   Someone else submitted a simple test program that duplicates this
+   behavior, and says it has something to do with the fact that X11R6
+   links with the threads library. */
+
+#ifdef THIS_IS_X11R6
+#define BROKEN_SIGCHLD
+#endif