mirror of https://gitee.com/openkylin/wget.git
51 lines
1.5 KiB
Plaintext
51 lines
1.5 KiB
Plaintext
|
# strchrnul.m4 serial 9
|
||
|
|
dnl Copyright (C) 2003, 2007, 2009-2019 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.
|
||
|
|
|
||
|
|
AC_DEFUN([gl_FUNC_STRCHRNUL],
|
||
|
|
[
|
||
|
|
dnl Persuade glibc <string.h> to declare strchrnul().
|
||
|
|
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
|
||
|
|
|
||
|
|
AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
|
||
|
|
AC_CHECK_FUNCS([strchrnul])
|
||
|
|
if test $ac_cv_func_strchrnul = no; then
|
||
|
|
HAVE_STRCHRNUL=0
|
||
|
|
else
|
||
|
|
AC_CACHE_CHECK([whether strchrnul works],
|
||
|
|
[gl_cv_func_strchrnul_works],
|
||
|
|
[AC_RUN_IFELSE([AC_LANG_PROGRAM([[
|
||
|
|
#include <string.h> /* for strchrnul */
|
||
|
|
]], [[const char *buf = "a";
|
||
|
|
return strchrnul (buf, 'b') != buf + 1;
|
||
|
|
]])],
|
||
|
|
[gl_cv_func_strchrnul_works=yes],
|
||
|
|
[gl_cv_func_strchrnul_works=no],
|
||
|
|
[dnl Cygwin 1.7.9 introduced strchrnul, but it was broken until 1.7.10
|
||
|
|
AC_EGREP_CPP([Lucky user],
|
||
|
|
[
|
||
|
|
#if defined __CYGWIN__
|
||
|
|
#include <cygwin/version.h>
|
||
|
|
#if CYGWIN_VERSION_DLL_COMBINED > CYGWIN_VERSION_DLL_MAKE_COMBINED (1007, 9)
|
||
|
|
Lucky user
|
||
|
|
#endif
|
||
|
|
#else
|
||
|
|
Lucky user
|
||
|
|
#endif
|
||
|
|
],
|
||
|
|
[gl_cv_func_strchrnul_works="guessing yes"],
|
||
|
|
[gl_cv_func_strchrnul_works="guessing no"])
|
||
|
|
])
|
||
|
|
])
|
||
|
|
case "$gl_cv_func_strchrnul_works" in
|
||
|
|
*yes) ;;
|
||
|
|
*) REPLACE_STRCHRNUL=1 ;;
|
||
|
|
esac
|
||
|
|
fi
|
||
|
|
])
|
||
|
|
|
||
|
|
# Prerequisites of lib/strchrnul.c.
|
||
|
|
AC_DEFUN([gl_PREREQ_STRCHRNUL], [:])
|