1 # strnlen.m4 serial 5 2 dnl Copyright (C) 2002-2003, 2005 Free Software Foundation, Inc. 3 dnl This file is free software; the Free Software Foundation 4 dnl gives unlimited permission to copy and/or distribute it, 5 dnl with or without modifications, as long as this notice is preserved. 6 7 AC_DEFUN([gl_FUNC_STRNLEN], 8 [ 9 AC_LIBSOURCES([strnlen.c, strnlen.h]) 10 11 dnl Persuade glibc <string.h> to declare strnlen(). 12 AC_REQUIRE([AC_GNU_SOURCE]) 13 14 AC_FUNC_STRNLEN 15 if test $ac_cv_func_strnlen_working = no; then 16 # This is necessary because automake-1.6.1 doens't understand 17 # that the above use of AC_FUNC_STRNLEN means we may have to use 18 # lib/strnlen.c. 19 #AC_LIBOBJ(strnlen) 20 AC_DEFINE(strnlen, rpl_strnlen, 21 [Define to rpl_strnlen if the replacement function should be used.]) 22 gl_PREREQ_STRNLEN 23 fi 24 ]) 25 26 # Prerequisites of lib/strnlen.c. 27 AC_DEFUN([gl_PREREQ_STRNLEN], [ 28 AC_CHECK_DECLS_ONCE(strnlen) 29 ]) 30
