* async.c (scm_async_click): Set the cdr of a executed handler

[bpt/guile.git] / acinclude.m4

diff --git a/acinclude.m4 b/acinclude.m4
index 7765f64..ac7544b 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -15,7 +15,9 @@ struct utime blah;
                 guile_cv_struct_utimbuf_needs_posix=no,
                guile_cv_struct_utimbuf_needs_posix=yes)])
   if test "$guile_cv_struct_utimbuf_needs_posix" = yes; then
-     AC_DEFINE(UTIMBUF_NEEDS_POSIX)
+     AC_DEFINE([UTIMBUF_NEEDS_POSIX], 1,
+       [Define this if <utime.h> doesn't define struct utimbuf unless
+        _POSIX_SOURCE is defined.  See GUILE_STRUCT_UTIMBUF in aclocal.m4.])
   fi])
 
 
@@ -32,7 +34,7 @@ AC_DEFUN([GUILE_HEADER_LIBC_WITH_UNISTD],
   [
     AC_CHECK_HEADERS(libc.h unistd.h)
     AC_CACHE_CHECK(
-      "whether libc.h and unistd.h can be included together",
+      [whether libc.h and unistd.h can be included together],
       guile_cv_header_libc_with_unistd,
       [
         if test "$ac_cv_header_libc_h" = "no"; then
@@ -53,7 +55,11 @@ AC_DEFUN([GUILE_HEADER_LIBC_WITH_UNISTD],
       ]
     )
     if test "$guile_cv_header_libc_with_unistd" = yes; then
-      AC_DEFINE(LIBC_H_WITH_UNISTD_H)
+      AC_DEFINE(LIBC_H_WITH_UNISTD_H, 1,
+        [Define this if we should include <libc.h> when we've already
+         included <unistd.h>.  On some systems, they conflict, and libc.h
+         should be omitted.  See GUILE_HEADER_LIBC_WITH_UNISTD in
+         aclocal.m4.])
     fi
   ]
 )
@@ -76,11 +82,10 @@ dnl select.  Similarly for bzero.
     which can conflict with char $1(); below.  */
 #include <assert.h>
 /* Override any gcc2 internal prototype to avoid an error.  */
-]ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
+#ifdef __cplusplus
 extern "C"
 #endif
-])dnl
-[/* We use char because int might match the return type of a gcc2
+/* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char $1();
 ], [