| 1 | # memrchr.m4 serial 10 |
| 2 | dnl Copyright (C) 2002-2003, 2005-2007, 2009-2013 Free Software Foundation, |
| 3 | dnl Inc. |
| 4 | dnl This file is free software; the Free Software Foundation |
| 5 | dnl gives unlimited permission to copy and/or distribute it, |
| 6 | dnl with or without modifications, as long as this notice is preserved. |
| 7 | |
| 8 | AC_DEFUN([gl_FUNC_MEMRCHR], |
| 9 | [ |
| 10 | dnl Persuade glibc <string.h> to declare memrchr(). |
| 11 | AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) |
| 12 | |
| 13 | AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) |
| 14 | AC_CHECK_DECLS_ONCE([memrchr]) |
| 15 | if test $ac_cv_have_decl_memrchr = no; then |
| 16 | HAVE_DECL_MEMRCHR=0 |
| 17 | fi |
| 18 | |
| 19 | AC_CHECK_FUNCS([memrchr]) |
| 20 | ]) |
| 21 | |
| 22 | # Prerequisites of lib/memrchr.c. |
| 23 | AC_DEFUN([gl_PREREQ_MEMRCHR], [:]) |