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-rw-r--r--gl/m4/rawmemchr.m420
1 files changed, 20 insertions, 0 deletions
diff --git a/gl/m4/rawmemchr.m4 b/gl/m4/rawmemchr.m4
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+++ b/gl/m4/rawmemchr.m4
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+# rawmemchr.m4 serial 2
+dnl Copyright (C) 2003, 2007-2020 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_RAWMEMCHR],
+[
+ dnl Persuade glibc <string.h> to declare rawmemchr().
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+ AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+ AC_CHECK_FUNCS([rawmemchr])
+ if test $ac_cv_func_rawmemchr = no; then
+ HAVE_RAWMEMCHR=0
+ fi
+])
+
+# Prerequisites of lib/strchrnul.c.
+AC_DEFUN([gl_PREREQ_RAWMEMCHR], [:])