binutils-gdb/gnulib/import/m4/chdir-long.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 17
# Use Gnulib's robust chdir function.
# It can handle arbitrarily long directory names, which means
# that when it is given the name of an existing directory, it
# never fails with ENAMETOOLONG.
# Arrange to compile chdir-long.c only on systems that define PATH_MAX.
dnl Copyright (C) 2004-2007, 2009-2021 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_CHDIR_LONG],
[
AC_REQUIRE([gl_PATHMAX_SNIPPET_PREREQ])
AC_CACHE_CHECK([whether this system supports file names of any length],
[gl_cv_have_unlimited_file_name_length],
[AC_EGREP_CPP([have_arbitrary_file_name_length_limit],
gl_PATHMAX_SNIPPET[
#ifdef PATH_MAX
have_arbitrary_file_name_length_limit
#endif],
[gl_cv_have_unlimited_file_name_length=no],
[gl_cv_have_unlimited_file_name_length=yes])])
])
AC_DEFUN([gl_PREREQ_CHDIR_LONG], [:])