From patchwork Thu Oct 6 16:11:55 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaldo Carvalho de Melo X-Patchwork-Id: 77313 Delivered-To: patch@linaro.org Received: by 10.140.97.247 with SMTP id m110csp51750qge; Thu, 6 Oct 2016 09:13:08 -0700 (PDT) X-Received: by 10.202.92.197 with SMTP id q188mr12309602oib.79.1475770388801; Thu, 06 Oct 2016 09:13:08 -0700 (PDT) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id d53si13303959otd.287.2016.10.06.09.13.08; Thu, 06 Oct 2016 09:13:08 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S942450AbcJFQNF (ORCPT + 27 others); Thu, 6 Oct 2016 12:13:05 -0400 Received: from merlin.infradead.org ([205.233.59.134]:44262 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S942338AbcJFQMR (ORCPT ); Thu, 6 Oct 2016 12:12:17 -0400 Received: from 191-247-226-40.3g.claro.net.br ([191.247.226.40] helo=jouet.infradead.org) by merlin.infradead.org with esmtpsa (Exim 4.85_2 #1 (Red Hat Linux)) id 1bsBHD-0007pn-QE; Thu, 06 Oct 2016 16:12:08 +0000 Received: by jouet.infradead.org (Postfix, from userid 1000) id A7216143039; Thu, 6 Oct 2016 13:11:58 -0300 (BRT) From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Linux Weekly News , Wang Nan , Alexei Starovoitov , He Kuang , Jiri Olsa , Zefan Li , pi3orama@163.com, Arnaldo Carvalho de Melo Subject: [PATCH 12/13] tools build: Support compiling C++ source file Date: Thu, 6 Oct 2016 13:11:55 -0300 Message-Id: <1475770316-20057-13-git-send-email-acme@kernel.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1475770316-20057-1-git-send-email-acme@kernel.org> References: <1475770316-20057-1-git-send-email-acme@kernel.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by merlin.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wang Nan Add new rule to compile .cpp file to .o use g++. C++ support is required for built-in clang and LLVM support. Linker side support will be introduced by following commits. Signed-off-by: Wang Nan Cc: Alexei Starovoitov Cc: He Kuang Cc: Jiri Olsa Cc: Zefan Li Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1474874832-134786-2-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/build/Build.include | 1 + tools/build/Makefile.build | 7 +++++++ 2 files changed, 8 insertions(+) -- 2.7.4 diff --git a/tools/build/Build.include b/tools/build/Build.include index 02489380d79b..1dcb95e76f70 100644 --- a/tools/build/Build.include +++ b/tools/build/Build.include @@ -90,6 +90,7 @@ if_changed = $(if $(strip $(any-prereq) $(arg-check)), \ # - per object C flags # - BUILD_STR macro to allow '-D"$(variable)"' constructs c_flags = -Wp,-MD,$(depfile),-MT,$@ $(CFLAGS) -D"BUILD_STR(s)=\#s" $(CFLAGS_$(basetarget).o) $(CFLAGS_$(obj)) +cxx_flags = -Wp,-MD,$(depfile),-MT,$@ $(CXXFLAGS) -D"BUILD_STR(s)=\#s" $(CXXFLAGS_$(basetarget).o) $(CXXFLAGS_$(obj)) ### ## HOSTCC C flags diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build index 190519a94ce5..99c0ccd2f176 100644 --- a/tools/build/Makefile.build +++ b/tools/build/Makefile.build @@ -61,6 +61,9 @@ quiet_cmd_cc_o_c = CC $@ quiet_cmd_host_cc_o_c = HOSTCC $@ cmd_host_cc_o_c = $(HOSTCC) $(host_c_flags) -c -o $@ $< +quiet_cmd_cxx_o_c = CXX $@ + cmd_cxx_o_c = $(CXX) $(cxx_flags) -c -o $@ $< + quiet_cmd_cpp_i_c = CPP $@ cmd_cpp_i_c = $(CC) $(c_flags) -E -o $@ $< @@ -88,6 +91,10 @@ $(OUTPUT)%.o: %.c FORCE $(call rule_mkdir) $(call if_changed_dep,$(host)cc_o_c) +$(OUTPUT)%.o: %.cpp FORCE + $(call rule_mkdir) + $(call if_changed_dep,cxx_o_c) + $(OUTPUT)%.o: %.S FORCE $(call rule_mkdir) $(call if_changed_dep,$(host)cc_o_c)