diff options
Diffstat (limited to 'gl/m4/strndup.m4')
| -rw-r--r-- | gl/m4/strndup.m4 | 48 |
1 files changed, 22 insertions, 26 deletions
diff --git a/gl/m4/strndup.m4 b/gl/m4/strndup.m4 index 4fa7d5a7..810313cd 100644 --- a/gl/m4/strndup.m4 +++ b/gl/m4/strndup.m4 @@ -1,5 +1,5 @@ -# strndup.m4 serial 16 -dnl Copyright (C) 2002-2003, 2005-2009 Free Software Foundation, Inc. +# strndup.m4 serial 17 +dnl Copyright (C) 2002-2003, 2005-2010 Free Software Foundation, 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. @@ -9,17 +9,20 @@ AC_DEFUN([gl_FUNC_STRNDUP], dnl Persuade glibc <string.h> to declare strndup(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) AC_CHECK_DECLS_ONCE([strndup]) + AC_CHECK_FUNCS_ONCE([strndup]) if test $ac_cv_have_decl_strndup = no; then HAVE_DECL_STRNDUP=0 fi - # AIX 4.3.3, AIX 5.1 have a function that fails to add the terminating '\0'. - AC_CACHE_CHECK([for working strndup], [gl_cv_func_strndup], - [AC_RUN_IFELSE([ - AC_LANG_PROGRAM([[#include <string.h> - #include <stdlib.h>]], [[ + if test $ac_cv_func_strndup = yes; then + # AIX 4.3.3, AIX 5.1 have a function that fails to add the terminating '\0'. + AC_CACHE_CHECK([for working strndup], [gl_cv_func_strndup_works], + [AC_RUN_IFELSE([ + AC_LANG_PROGRAM([[#include <string.h> + #include <stdlib.h>]], [[ #ifndef HAVE_DECL_STRNDUP extern char *strndup (const char *, size_t); #endif @@ -28,26 +31,19 @@ AC_DEFUN([gl_FUNC_STRNDUP], free (s); s = strndup ("shorter string", 13); return s[13] != '\0';]])], - [gl_cv_func_strndup=yes], - [gl_cv_func_strndup=no], - [AC_CHECK_FUNC([strndup], - [AC_EGREP_CPP([too risky], [ -#ifdef _AIX - too risky -#endif - ], - [gl_cv_func_strndup=no], - [gl_cv_func_strndup=yes])], - [gl_cv_func_strndup=no])])]) - if test $gl_cv_func_strndup = yes; then - AC_DEFINE([HAVE_STRNDUP], [1], - [Define if you have the strndup() function and it works.]) + [gl_cv_func_strndup_works=yes], + [gl_cv_func_strndup_works=no], + [case $host_os in + aix*) gl_cv_func_strndup_works="guessing no";; + *) gl_cv_func_strndup_works="guessing yes";; + esac])]) + case $gl_cv_func_strndup_works in + *no) + REPLACE_STRNDUP=1 + AC_LIBOBJ([strndup]) + ;; + esac else - HAVE_STRNDUP=0 AC_LIBOBJ([strndup]) - gl_PREREQ_STRNDUP fi ]) - -# Prerequisites of lib/strndup.c. -AC_DEFUN([gl_PREREQ_STRNDUP], [:]) |