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New upstream version 2.3.4

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Jan Wagner 2023-10-18 07:29:37 +00:00
parent e7bdd1c6c6
commit de72f6f588
556 changed files with 90432 additions and 53391 deletions
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149
gl/m4/fopen.m4 Normal file
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# fopen.m4 serial 13
dnl Copyright (C) 2007-2023 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_FOPEN],
[
AC_REQUIRE([gl_STDIO_H_DEFAULTS])
AC_REQUIRE([AC_CANONICAL_HOST])
case "$host_os" in
mingw* | pw*)
dnl Replace fopen, for handling of "/dev/null".
REPLACE_FOPEN=1
dnl fopen on mingw also has the trailing slash bug.
gl_cv_func_fopen_slash="guessing no"
;;
*)
dnl fopen("foo/", "w") should not create a file when the file name has a
dnl trailing slash.
AC_CACHE_CHECK([whether fopen recognizes a trailing slash],
[gl_cv_func_fopen_slash],
[
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stddef.h>
#include <stdio.h>
int main ()
{
FILE *fp = fopen ("conftest.sl/", "w");
int result = (fp != NULL);
if (fp != NULL)
fclose (fp);
return result;
}]])],
[gl_cv_func_fopen_slash=yes],
[gl_cv_func_fopen_slash=no],
[
changequote(,)dnl
case "$host_os" in
aix* | hpux* | solaris2.[0-9] | solaris2.[0-9].*)
gl_cv_func_fopen_slash="guessing no" ;;
*)
gl_cv_func_fopen_slash="guessing yes" ;;
esac
changequote([,])dnl
])
rm -f conftest.sl
])
;;
esac
case "$gl_cv_func_fopen_slash" in
*no)
AC_DEFINE([FOPEN_TRAILING_SLASH_BUG], [1],
[Define to 1 if fopen() fails to recognize a trailing slash.])
REPLACE_FOPEN=1
;;
esac
])
AC_DEFUN([gl_FUNC_FOPEN_GNU],
[
AC_REQUIRE([gl_FUNC_FOPEN])
AC_CACHE_CHECK([whether fopen supports the mode character 'x'],
[gl_cv_func_fopen_mode_x],
[rm -f conftest.x
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stdio.h>
#include <errno.h>
int main ()
{
FILE *fp;
fp = fopen ("conftest.x", "w");
fclose (fp);
fp = fopen ("conftest.x", "wx");
if (fp != NULL)
/* 'x' ignored */
return 1;
else if (errno == EEXIST)
return 0;
else
/* 'x' rejected */
return 2;
}]])],
[gl_cv_func_fopen_mode_x=yes],
[gl_cv_func_fopen_mode_x=no],
[case "$host_os" in
# Guess yes on glibc and musl systems.
linux*-gnu* | gnu* | kfreebsd*-gnu | *-musl*)
gl_cv_func_fopen_mode_x="guessing yes" ;;
# If we don't know, obey --enable-cross-guesses.
*)
gl_cv_func_fopen_mode_x="$gl_cross_guess_normal" ;;
esac
])
rm -f conftest.x
])
AC_CACHE_CHECK([whether fopen supports the mode character 'e'],
[gl_cv_func_fopen_mode_e],
[echo foo > conftest.x
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
]GL_MDA_DEFINES[
int main ()
{
FILE *fp = fopen ("conftest.x", "re");
if (fp != NULL)
{
if (fcntl (fileno (fp), F_GETFD) & FD_CLOEXEC)
return 0;
else
/* 'e' ignored */
return 1;
}
else
/* 'e' rejected */
return 2;
}]])],
[gl_cv_func_fopen_mode_e=yes],
[gl_cv_func_fopen_mode_e=no],
[case "$host_os" in
# Guess yes on glibc and musl systems.
linux*-gnu* | gnu* | kfreebsd*-gnu | *-musl*)
gl_cv_func_fopen_mode_e="guessing yes" ;;
# Guess no on native Windows.
mingw*)
gl_cv_func_fopen_mode_e="guessing no" ;;
# If we don't know, obey --enable-cross-guesses.
*)
gl_cv_func_fopen_mode_e="$gl_cross_guess_normal" ;;
esac
])
rm -f conftest.x
])
REPLACE_FOPEN_FOR_FOPEN_GNU="$REPLACE_FOPEN"
case "$gl_cv_func_fopen_mode_x" in
*no) REPLACE_FOPEN_FOR_FOPEN_GNU=1 ;;
esac
case "$gl_cv_func_fopen_mode_e" in
*no) REPLACE_FOPEN_FOR_FOPEN_GNU=1 ;;
esac
])
# Prerequisites of lib/fopen.c.
AC_DEFUN([gl_PREREQ_FOPEN], [:])