mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-11 09:20:51 +00:00
57 lines
1.5 KiB
Plaintext
57 lines
1.5 KiB
Plaintext
# open.m4 serial 15
|
|
dnl Copyright (C) 2007-2020 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_OPEN],
|
|
[
|
|
AC_REQUIRE([AC_CANONICAL_HOST])
|
|
AC_REQUIRE([gl_PREPROC_O_CLOEXEC])
|
|
case "$host_os" in
|
|
mingw* | pw*)
|
|
REPLACE_OPEN=1
|
|
;;
|
|
*)
|
|
dnl open("foo/") should not create a file when the file name has a
|
|
dnl trailing slash. FreeBSD only has the problem on symlinks.
|
|
AC_CHECK_FUNCS_ONCE([lstat])
|
|
if test "$gl_cv_macro_O_CLOEXEC" != yes; then
|
|
REPLACE_OPEN=1
|
|
fi
|
|
gl_OPEN_TRAILING_SLASH_BUG
|
|
case "$gl_cv_func_open_slash" in
|
|
*no)
|
|
REPLACE_OPEN=1
|
|
;;
|
|
esac
|
|
;;
|
|
esac
|
|
dnl Replace open() for supporting the gnulib-defined fchdir() function,
|
|
dnl to keep fchdir's bookkeeping up-to-date.
|
|
m4_ifdef([gl_FUNC_FCHDIR], [
|
|
if test $REPLACE_OPEN = 0; then
|
|
gl_TEST_FCHDIR
|
|
if test $HAVE_FCHDIR = 0; then
|
|
REPLACE_OPEN=1
|
|
fi
|
|
fi
|
|
])
|
|
dnl Replace open() for supporting the gnulib-defined O_NONBLOCK flag.
|
|
m4_ifdef([gl_NONBLOCKING_IO], [
|
|
if test $REPLACE_OPEN = 0; then
|
|
gl_NONBLOCKING_IO
|
|
if test $gl_cv_have_open_O_NONBLOCK != yes; then
|
|
REPLACE_OPEN=1
|
|
fi
|
|
fi
|
|
])
|
|
])
|
|
|
|
# Prerequisites of lib/open.c.
|
|
AC_DEFUN([gl_PREREQ_OPEN],
|
|
[
|
|
AC_REQUIRE([gl_PROMOTED_TYPE_MODE_T])
|
|
:
|
|
])
|