| # strnlen.m4 serial 13 | |
| dnl Copyright (C) 2002-2003, 2005-2007, 2009-2019 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_STRNLEN], | |
| [ | |
| AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) | |
| dnl Persuade glibc <string.h> to declare strnlen(). | |
| AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) | |
| AC_CHECK_DECLS_ONCE([strnlen]) | |
| if test $ac_cv_have_decl_strnlen = no; then | |
| HAVE_DECL_STRNLEN=0 | |
| else | |
| m4_pushdef([AC_LIBOBJ], [:]) | |
| dnl Note: AC_FUNC_STRNLEN does AC_LIBOBJ([strnlen]). | |
| AC_FUNC_STRNLEN | |
| m4_popdef([AC_LIBOBJ]) | |
| if test $ac_cv_func_strnlen_working = no; then | |
| REPLACE_STRNLEN=1 | |
| fi | |
| fi | |
| ]) | |
| # Prerequisites of lib/strnlen.c. | |
| AC_DEFUN([gl_PREREQ_STRNLEN], [:]) |