3 dnl Copyright (C) 2017-2024 Free Software Foundation, Inc.
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
8 AC_DEFUN([gl_FUNC_REALLOCARRAY],
10 dnl Persuade glibc <stdlib.h> to declare reallocarray.
11 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
13 AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
14 AC_REQUIRE([gl_CHECK_MALLOC_PTRDIFF])
15 gl_CHECK_FUNCS_ANDROID([reallocarray], [[#include <stdlib.h>]])
16 if test "$ac_cv_func_reallocarray" = no; then
18 case "$gl_cv_onwards_func_reallocarray" in
19 future*) REPLACE_REALLOCARRAY=1 ;;
21 elif test "$gl_cv_malloc_ptrdiff" = no; then
22 REPLACE_REALLOCARRAY=1
26 # Prerequisites of lib/reallocarray.c.
27 AC_DEFUN([gl_PREREQ_REALLOCARRAY], [:])