From patchwork Thu Sep 24 09:22:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 304531 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7BFFFC4363D for ; Thu, 24 Sep 2020 10:16:01 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F075223600 for ; Thu, 24 Sep 2020 10:16:00 +0000 (UTC) Authentication-Results: mail.kernel.org; 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Thu, 24 Sep 2020 09:24:03 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id B96CC60CCC; Thu, 24 Sep 2020 09:24:02 +0000 (UTC) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 60/92] configure: cleanup CFLAGS and LDFLAGS for submodules Date: Thu, 24 Sep 2020 05:22:42 -0400 Message-Id: <20200924092314.1722645-61-pbonzini@redhat.com> In-Reply-To: <20200924092314.1722645-1-pbonzini@redhat.com> References: <20200924092314.1722645-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/22 23:02:20 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -32 X-Spam_score: -3.3 X-Spam_bar: --- X-Spam_report: (-3.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.228, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The -g and -O2 flags that configure adds to CFLAGS are only used by submodules, so do not put anymore the confusing CFLAGS variable in config-host.mak and replace it with more explicit SUBMODULE_CFLAGS variable. There was also no equivalent SUBMODULE_LDFLAGS variable, add it. This would theoretically help with LTO if we want -g and -O2 options on the command line. I say "theoretically" because submodules should not be linking anything; but since we were passing an "LD" variable we might as well get its flags right. CFLAGS are now synthesized in the configuration summary as a quick way to present --enable-debug and --enable-debug-info. Reviewed-by: Richard Henderson Signed-off-by: Paolo Bonzini --- Makefile | 1 - configure | 20 ++++++++++++++++---- meson.build | 3 ++- 3 files changed, 18 insertions(+), 6 deletions(-) diff --git a/Makefile b/Makefile index f83226e0e1..61ab93f05a 100644 --- a/Makefile +++ b/Makefile @@ -137,7 +137,6 @@ configure: ; .PHONY: all clean distclean install \ recurse-all dist msi FORCE -SUBMODULE_CFLAGS = $(QEMU_CFLAGS) $(CFLAGS) SUBDIR_MAKEFLAGS = $(if $(V),,--no-print-directory --quiet) SUBDIR_HOST_VARS = \ PKG_CONFIG="$(PKG_CONFIG)" \ diff --git a/configure b/configure index ac0dfdfac5..9b7232f9d2 100755 --- a/configure +++ b/configure @@ -6112,12 +6112,23 @@ elif test "$fortify_source" = "yes" ; then QEMU_CFLAGS="-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $QEMU_CFLAGS" debug=no fi + +SUBMODULE_CFLAGS=-Wall +SUBMODULE_LDFLAGS= +if test "$pie" = "yes"; then + SUBMODULE_CFLAGS="$SUBMODULE_CFLAGS -fPIE" + SUBMODULE_LDFLAGS="$SUBMODULE_LDFLAGS -pie" +else + SUBMODULE_CFLAGS="$SUBMODULE_CFLAGS $CFLAGS_NOPIE" + SUBMODULE_LDFLAGS="$SUBMODULE_LDFLAGS $LDFLAGS_NOPIE" +fi if test "$debug_info" = "yes"; then - CFLAGS="-g $CFLAGS" - LDFLAGS="-g $LDFLAGS" + SUBMODULE_CFLAGS="$SUBMODULE_CFLAGS -g" + SUBMODULE_LDFLAGS="$SUBMODULE_LDFLAGS -g" fi if test "$debug" = "no"; then - CFLAGS="-O2 $CFLAGS" + SUBMODULE_CFLAGS="$SUBMODULE_CFLAGS -O2" + SUBMODULE_LDFLAGS="$SUBMODULE_LDFLAGS -O2" fi case "$ARCH" in @@ -7292,7 +7303,8 @@ echo "RANLIB=$ranlib" >> $config_host_mak echo "NM=$nm" >> $config_host_mak echo "PKG_CONFIG=$pkg_config_exe" >> $config_host_mak echo "WINDRES=$windres" >> $config_host_mak -echo "CFLAGS=$CFLAGS" >> $config_host_mak +echo "SUBMODULE_CFLAGS=$CFLAGS \$(QEMU_CFLAGS) $SUBMODULE_CFLAGS" >> $config_host_mak +echo "SUBMODULE_LDFLAGS=$LDFLAGS \$(QEMU_LDFLAGS) $SUBMODULE_LDFLAGS" >> $config_host_mak echo "CFLAGS_NOPIE=$CFLAGS_NOPIE" >> $config_host_mak echo "QEMU_CFLAGS=$QEMU_CFLAGS" >> $config_host_mak echo "QEMU_CXXFLAGS=$QEMU_CXXFLAGS" >> $config_host_mak diff --git a/meson.build b/meson.build index 9aeefa60fb..cb0113ee90 100644 --- a/meson.build +++ b/meson.build @@ -1471,7 +1471,8 @@ if targetos == 'darwin' summary_info += {'Objective-C compiler': meson.get_compiler('objc').cmd_array()[0]} endif summary_info += {'ARFLAGS': config_host['ARFLAGS']} -summary_info += {'CFLAGS': config_host['CFLAGS']} +summary_info += {'CFLAGS': '-O' + get_option('optimization') + + (get_option('debug') ? ' -g' : '')} summary_info += {'QEMU_CFLAGS': config_host['QEMU_CFLAGS']} summary_info += {'QEMU_LDFLAGS': config_host['QEMU_LDFLAGS']} summary_info += {'make': config_host['MAKE']}