mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-10-30 01:43:23 +00:00
532759a593
* bootstrap, Makefile.am, gnulib/*: Import more gnulib modules for use by MinGW Windows port.
51 lines
1.5 KiB
Plaintext
51 lines
1.5 KiB
Plaintext
# lseek.m4 serial 4
|
|
dnl Copyright (C) 2007 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_LSEEK],
|
|
[
|
|
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
|
|
AC_REQUIRE([AC_PROG_CC])
|
|
AC_CACHE_CHECK([whether lseek detects pipes], [gl_cv_func_lseek_pipe],
|
|
[if test $cross_compiling = no; then
|
|
AC_LINK_IFELSE([
|
|
#include <sys/types.h> /* for off_t */
|
|
#include <stdio.h> /* for SEEK_CUR */
|
|
#include <unistd.h>
|
|
int main ()
|
|
{
|
|
/* Exit with success only if stdin is seekable. */
|
|
return lseek (0, (off_t)0, SEEK_CUR) < 0;
|
|
}],
|
|
[if test -s conftest$ac_exeext \
|
|
&& ./conftest$ac_exeext < conftest.$ac_ext \
|
|
&& { echo hi | ./conftest$ac_exeext; test $? = 1; }; then
|
|
gl_cv_func_lseek_pipe=yes
|
|
else
|
|
gl_cv_func_lseek_pipe=no
|
|
fi],
|
|
[gl_cv_func_lseek_pipe=no])
|
|
else
|
|
AC_COMPILE_IFELSE([
|
|
#if ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__) || defined __BEOS__
|
|
/* mingw and BeOS mistakenly return 0 when trying to seek on pipes. */
|
|
Choke me.
|
|
#endif],
|
|
[gl_cv_func_lseek_pipe=yes], [gl_cv_func_lseek_pipe=no])
|
|
fi])
|
|
if test $gl_cv_func_lseek_pipe = no; then
|
|
gl_REPLACE_LSEEK
|
|
fi
|
|
])
|
|
|
|
AC_DEFUN([gl_REPLACE_LSEEK],
|
|
[
|
|
AC_LIBOBJ([lseek])
|
|
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
|
|
REPLACE_LSEEK=1
|
|
AC_DEFINE([LSEEK_PIPE_BROKEN], [1],
|
|
[Define to 1 if lseek does not detect pipes.])
|
|
])
|