diff options
Diffstat (limited to 'm4/reallocarray.m4')
| -rw-r--r-- | m4/reallocarray.m4 | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/m4/reallocarray.m4 b/m4/reallocarray.m4 new file mode 100644 index 0000000..6a5b5ab --- /dev/null +++ b/m4/reallocarray.m4 @@ -0,0 +1,26 @@ +# reallocarray.m4 serial 5 +dnl Copyright (C) 2017-2023 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_FUNC_REALLOCARRAY], +[ + dnl Persuade glibc <stdlib.h> to declare reallocarray. + AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) + + AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) + AC_REQUIRE([gl_CHECK_MALLOC_PTRDIFF]) + gl_CHECK_FUNCS_ANDROID([reallocarray], [[#include <stdlib.h>]]) + if test "$ac_cv_func_reallocarray" = no; then + HAVE_REALLOCARRAY=0 + case "$gl_cv_onwards_func_reallocarray" in + future*) REPLACE_REALLOCARRAY=1 ;; + esac + elif test "$gl_cv_malloc_ptrdiff" = no; then + REPLACE_REALLOCARRAY=1 + fi +]) + +# Prerequisites of lib/reallocarray.c. +AC_DEFUN([gl_PREREQ_REALLOCARRAY], [:]) |