X-Git-Url: http://cgit.sxemacs.org/?p=sxemacs;a=blobdiff_plain;f=configure.ac;h=de6d1608e0542a1d3221bda688dae9624c6771ed;hp=dfb737b12efe46707c45fe42b80aeeac5ce463ca;hb=763caa9fff2c6041ee54193f83a7ad56e94660d3;hpb=8f74a8dd656155dc7716bd1ce168bb086b44cb8b

diff --git a/configure.ac b/configure.ac
index dfb737b..de6d160 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1740,10 +1740,30 @@ fi
 after_morecore_hook_exists=yes
 AC_CHECK_FUNC(malloc_set_state, ,doug_lea_malloc=no)
 AC_MSG_CHECKING(whether __after_morecore_hook exists)
-AC_LINK_IFELSE([AC_LANG_SOURCE([[extern void (* __after_morecore_hook)();],[__after_morecore_hook = 0]])],
+AC_LINK_IFELSE([AC_LANG_SOURCE([
+	[extern void (* __after_morecore_hook)();]
+	[main() {__after_morecore_hook = 0;}]
+	])],
   [AC_MSG_RESULT(yes)],
   [AC_MSG_RESULT(no)
    after_morecore_hook_exists=no])
+if test "$after_morecore_hook_exists" = "yes" ; then
+   AC_DEFINE([HAVE_MORECORE_HOOK], [1], [Define if __after_morecore_hook is available])
+fi
+AC_SUBST(HAVE_MORECORE_HOOK)
+free_hook_exists=yes
+AC_MSG_CHECKING(whether __free_hook exists)
+AC_LINK_IFELSE([AC_LANG_SOURCE([
+	[extern void (* __free_hook)();]
+	[main() {__free_hook = 0;}]
+	])],
+  [AC_MSG_RESULT(yes)],
+  [AC_MSG_RESULT(no)
+   free_hook_exists=no])
+if test "$free_hook_exists" = "yes" ; then
+   AC_DEFINE([HAVE_FREE_HOOK], [1], [Define if __free_hook is available])
+fi
+AC_SUBST(HAVE_FREE_HOOK)
 if test "$system_malloc" = "yes" ; then
   GNU_MALLOC=no
   GNU_MALLOC_reason="
@@ -2504,7 +2524,7 @@ dnl   fi
 
 	dnl make sure we can find Intrinsic.h
 	AC_CHECK_HEADER([X11/Intrinsic.h], [],
-		[AC_MSG_ERROR([Unable to find X11 header files. Try using --x-includes=<path> if you know the path, or --with-x=no to disable X11 support.])])
+		[AC_MSG_ERROR([Unable to find X11 and/or Xt header files. Try using --x-includes=<path> if you know the path, or --with-x=no to disable X11 support.])])
 
 	dnl Check some more headers
 	AC_CHECK_HEADERS([X11/Intrinsic.h X11/StringDefs.h X11/Shell.h X11/ShellP.h],