binutils-gdb/gnulib/import/m4/openat.m4
Paul E. Murphy 9c9d63b15a gnulib: update to 776af40e0
This fixes PR27184, a failure to compile gdb due to
cdefs.h being out of sync with glibc on ppc64le targets
which are compiled with -mabi=ieeelongdouble and glibc
2.32.

Likewise, update usage of _GL_ATTRIBUTE_FORMAT_PRINTF to
_GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD.

Likewise, disable newly added rpl_free gnulib api in
gdbserver support libraries.

Likewise, undefine read/write macros before redefining them
on mingw targets.

Likewise, wrap C++ usage of free with GNULIB_NAMESPACE namespace
as needed.

Change-Id: I86517613c0d8ac8f5ea45bbc4ebe2b54a3aef29f
2021-02-05 13:35:20 -05:00

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# serial 46
# See if we need to use our replacement for Solaris' openat et al functions.
dnl Copyright (C) 2004-2021 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.
# Written by Jim Meyering.
AC_DEFUN([gl_FUNC_OPENAT],
[
AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
AC_CHECK_FUNCS_ONCE([openat])
AC_REQUIRE([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK])
AC_REQUIRE([gl_PREPROC_O_CLOEXEC])
case $ac_cv_func_openat+$gl_cv_func_lstat_dereferences_slashed_symlink+$gl_cv_macro_O_CLOEXEC in
yes+*yes+yes)
;;
yes+*)
# Solaris 10 lacks O_CLOEXEC.
# Solaris 9 has *at functions, but uniformly mishandles trailing
# slash in all of them.
REPLACE_OPENAT=1
;;
*)
HAVE_OPENAT=0
;;
esac
])
# Prerequisites of lib/openat.c.
AC_DEFUN([gl_PREREQ_OPENAT],
[
AC_REQUIRE([gl_PROMOTED_TYPE_MODE_T])
:
])