X-Git-Url: https://jfr.im/git/irc/rqf/shadowircd.git/blobdiff_plain/212380e3f42f585dc1ea927402252eb943f91f7b..a55d413fd693cc85398b6929bd91589d79674c19:/aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
index cc5d05d..dadc38d 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,9 +1,18 @@
-# $Id: aclocal.m4 918 2006-02-23 18:17:21Z nenolod $ - aclocal.m4 - Autoconf fun...
+# $Id: aclocal.m4 3321 2007-03-30 23:32:43Z jilles $ - aclocal.m4 - Autoconf fun...
 AC_DEFUN([AC_DEFINE_DIR], [
   test "x$prefix" = xNONE && prefix="$ac_default_prefix"
   test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
-  ac_define_dir=`eval echo [$]$2`
-  ac_define_dir=`eval echo [$]ac_define_dir`
+  last_ac_define_dir=`eval echo [$]$2`
+  ac_define_dir=`eval echo [$]last_ac_define_dir`
+  ac_define_dir_counter=0
+  while test "x[$]last_ac_define_dir" != "x[$]ac_define_dir"; do
+    last_ac_define_dir="[$]ac_define_dir"
+    ac_define_dir=`eval echo [$]last_ac_define_dir`
+    AS_VAR_ARITH([ac_define_dir_counter], [$ac_define_dir_counter + 1])
+    AS_VAR_IF([ac_define_dir_counter], [128],
+	[AC_MSG_ERROR([detected recusive directory expansion when expanding $1=[$]$2: [$]ac_define_dir])
+	break])
+  done
   $1="$ac_define_dir"
   AC_SUBST($1)
   ifelse($3, ,
@@ -34,7 +43,7 @@ AC_DEFUN([CHARYBDIS_C_GCC_TRY_FLAGS],[
 #include <stdio.h>
 int main(void);
 ],[
-    strcmp("a","b"); fprintf(stdout,"test ok\n");
+    (void)strcmp("a","b"); fprintf(stdout,"test ok\n");
 ], [$2=yes], [$2=no])
    CFLAGS="${oldcflags}"])
   if test "x$$2" = xyes; then