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Diffstat (limited to 'm4/strnlen.m4')
| -rw-r--r-- | m4/strnlen.m4 | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/m4/strnlen.m4 b/m4/strnlen.m4 new file mode 100644 index 000000000..89cca67ea --- /dev/null +++ b/m4/strnlen.m4 @@ -0,0 +1,32 @@ +# strnlen.m4 serial 2 +dnl Copyright (C) 2002-2003 Free Software Foundation, Inc. +dnl This file is free software, distributed under the terms of the GNU +dnl General Public License. As a special exception to the GNU General +dnl Public License, this file may be distributed as part of a program +dnl that contains a configuration script generated by Autoconf, under +dnl the same distribution terms as the rest of that program. + +AC_DEFUN([gl_FUNC_STRNLEN], +[ + dnl Persuade glibc <string.h> to declare strnlen(). + AC_REQUIRE([AC_GNU_SOURCE]) + + AC_FUNC_STRNLEN + if test $ac_cv_func_strnlen_working = no; then + # This is necessary because automake-1.6.1 doens't understand + # that the above use of AC_FUNC_STRNLEN means we may have to use + # lib/strnlen.c. + #AC_LIBOBJ(strnlen) + AC_DEFINE(strnlen, rpl_strnlen, + [Define to rpl_strnlen if the replacement function should be used.]) + gl_PREREQ_STRNLEN + fi +]) + +# Prerequisites of lib/strnlen.c. +AC_DEFUN([gl_PREREQ_STRNLEN], [ + AC_REQUIRE([AC_HEADER_STDC]) + AC_CHECK_HEADERS_ONCE(memory.h string.h) + AC_CHECK_DECLS(memchr) +]) + |