-#serial 1
+# realloc.m4 serial 7
+dnl Copyright (C) 2002 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
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
dnl From Jim Meyering.
-dnl Determine whether realloc accepts 0 as its first argument.
+dnl Determine whether realloc works when both arguments are 0.
dnl If it doesn't, arrange to use the replacement function.
-dnl
-dnl If you use this macro in a package, you should
-dnl add the following two lines to acconfig.h:
-dnl /* Define to rpl_realloc if the replacement function should be used. */
-dnl #undef realloc
-dnl
-AC_DEFUN(jm_FUNC_REALLOC,
+AC_DEFUN([jm_FUNC_REALLOC],
[
- AC_CACHE_CHECK([for working realloc], jm_cv_func_working_realloc,
- [AC_TRY_RUN([
- char *realloc ();
- int
- main ()
- {
- exit (realloc (0, 1) ? 0 : 1);
- }
- ],
- jm_cv_func_working_realloc=yes,
- jm_cv_func_working_realloc=no,
- dnl When crosscompiling, assume realloc is broken.
- jm_cv_func_working_realloc=no)
- ])
- if test $jm_cv_func_working_realloc = no; then
- LIBOBJS="$LIBOBJS realloc.o"
- AC_DEFINE_UNQUOTED(realloc, rpl_realloc)
+ AC_REQUIRE([AC_FUNC_REALLOC])
+ dnl autoconf < 2.57 used the symbol ac_cv_func_realloc_works.
+ if test X"$ac_cv_func_realloc_0_nonnull" = Xno || test X"$ac_cv_func_realloc_works" = Xno; then
+ gl_PREREQ_REALLOC
fi
])
+
+# Prerequisites of lib/realloc.c.
+AC_DEFUN([gl_PREREQ_REALLOC], [
+ :
+])