strdup declaration, from Simon Josefsson.

[gnulib.git] / m4 / alloca.m4

diff --git a/m4/alloca.m4 b/m4/alloca.m4
index 6dc0760..793cf0a 100644 (file)
--- a/m4/alloca.m4
+++ b/m4/alloca.m4
@@ -1,4 +1,4 @@
-# alloca.m4 serial 2
+# alloca.m4 serial 3
 dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General
@@ -8,6 +8,10 @@ dnl the same distribution terms as the rest of that program.
 
 AC_DEFUN([gl_FUNC_ALLOCA],
 [
+  dnl Work around a bug of AC_EGREP_CPP in autoconf-2.57.
+  AC_REQUIRE([AC_PROG_CPP])
+  AC_REQUIRE([AC_PROG_EGREP])
+
   AC_REQUIRE([AC_FUNC_ALLOCA])
   if test $ac_cv_func_alloca_works = no; then
     gl_PREREQ_ALLOCA
@@ -27,6 +31,4 @@ AC_DEFUN([gl_FUNC_ALLOCA],
 
 # Prerequisites of lib/alloca.c.
 # STACK_DIRECTION is already handled by AC_FUNC_ALLOCA.
-AC_DEFUN([gl_PREREQ_ALLOCA], [
-  AC_CHECK_HEADERS_ONCE(stdlib.h string.h)
-])
+AC_DEFUN([gl_PREREQ_ALLOCA], [:])