gcc/config/zstd.m4
Christophe Lyon e61c0e3a4b
configure: require libzstd >= 1.4.0
gas uses ZSTD_compressStream2 which is only available with libzstd >=
1.4.0, leading to build errors when an older version is installed.

This patch updates the check libzstd presence to check its version is
>= 1.4.0. However, since gas seems to be the only component requiring
such a recent version this may imply that we disable ZSTD support for
all components although some would still benefit from an older
version.

I ran 'autoreconf -f' in all directories containing a configure.ac
file, using vanilla autoconf-2.69 and automake-1.15.1. I noticed
several errors from autoheader in readline, as well as warnings in
intl, but they are unrelated to this patch.

This should fix some of the buildbots.

OK for trunk?

Thanks,

Christophe

config/ChangeLog:

	* zstd.m4: Add minimum version requirement of 1.4.0.
2023-08-07 22:59:37 +02:00

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dnl Copyright (C) 2022 Free Software Foundation, Inc.
dnl This file is free software, distributed under the terms of the GNU
dnl General Public License. As a special exception to the GNU General
dnl Public License, this file may be distributed as part of a program
dnl that contains a configuration script generated by Autoconf, under
dnl the same distribution terms as the rest of that program.
dnl Enable features using the zstd library.
AC_DEFUN([AC_ZSTD], [
AC_ARG_WITH(zstd,
[AS_HELP_STRING([--with-zstd], [support zstd compressed debug sections (default=auto)])],
[], [with_zstd=auto])
AS_IF([test "$with_zstd" != no],
[PKG_CHECK_MODULES(ZSTD, [libzstd >= 1.4.0], [
AC_DEFINE(HAVE_ZSTD, 1, [Define to 1 if zstd is enabled.])
], [
if test "$with_zstd" = yes; then
AC_MSG_ERROR([--with-zstd was given, but pkgconfig/libzstd.pc is not found])
fi
])
])
])