summaryrefslogtreecommitdiff
path: root/m4/memrchr.m4
blob: 5dbe4d1e8a20b30743fd6d731498f0a5aa8d67d6 (about) (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
# memrchr.m4 serial 10
dnl Copyright (C) 2002-2003, 2005-2007, 2009-2014 Free Software Foundation,
dnl 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_MEMRCHR],
[
  dnl Persuade glibc <string.h> to declare memrchr().
  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])

  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
  AC_CHECK_DECLS_ONCE([memrchr])
  if test $ac_cv_have_decl_memrchr = no; then
    HAVE_DECL_MEMRCHR=0
  fi

  AC_CHECK_FUNCS([memrchr])
])

# Prerequisites of lib/memrchr.c.
AC_DEFUN([gl_PREREQ_MEMRCHR], [:])