1 files changed, 30 insertions, 0 deletions
diff --git a/m4/strtoumax.m4 b/m4/strtoumax.m4
new file mode 100644
index 00000000000..448c4d9b777
--- /dev/null
+++ b/m4/strtoumax.m4
@@ -0,0 +1,30 @@
+# strtoumax.m4 serial 8
+dnl Copyright (C) 2002-2004, 2006, 2009-2011 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_STRTOUMAX],
+[
+  AC_CACHE_CHECK([whether <inttypes.h> defines strtoumax as a macro],
+    gl_cv_func_strtoumax_macro,
+    [AC_EGREP_CPP([inttypes_h_defines_strtoumax], [#include <inttypes.h>
+#ifdef strtoumax
+ inttypes_h_defines_strtoumax
+#endif],
+       gl_cv_func_strtoumax_macro=yes,
+       gl_cv_func_strtoumax_macro=no)])
+
+  if test "$gl_cv_func_strtoumax_macro" != yes; then
+    AC_REPLACE_FUNCS([strtoumax])
+    if test $ac_cv_func_strtoumax = no; then
+      gl_PREREQ_STRTOUMAX
+    fi
+  fi
+])
+
+# Prerequisites of lib/strtoumax.c.
+AC_DEFUN([gl_PREREQ_STRTOUMAX], [
+  AC_CHECK_DECLS([strtoull])
+  AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT])
+])