summaryrefslogtreecommitdiffstats
path: root/m4/reallocarray.m4
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--m4/reallocarray.m423
1 files changed, 23 insertions, 0 deletions
diff --git a/m4/reallocarray.m4 b/m4/reallocarray.m4
new file mode 100644
index 0000000..f39ab6e
--- /dev/null
+++ b/m4/reallocarray.m4
@@ -0,0 +1,23 @@
+# reallocarray.m4 serial 3
+dnl Copyright (C) 2017-2022 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])
+ AC_CHECK_FUNCS([reallocarray])
+ if test "$ac_cv_func_reallocarray" = no; then
+ HAVE_REALLOCARRAY=0
+ elif test "$gl_cv_malloc_ptrdiff" = no; then
+ REPLACE_REALLOCARRAY=1
+ fi
+])
+
+# Prerequisites of lib/reallocarray.c.
+AC_DEFUN([gl_PREREQ_REALLOCARRAY], [:])