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x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: YUL/h+w97rk6fL2AtzL31hapl3vmavakEisjzMUXThTGx+TReZsq9L2OdsgE7RHeor8Ep7wghr eF+gQDNv42FjsFS6+HKy237PLwYzCeDhNbYcpg519wtfK3D5ULth2+d9hLp8eQPGrFVyRvu6AK cRebXe9cAEB+/y7OWeIsL3x+GBDhh0U7JZqlg95odqIUQzofuFusD9T7FWOZKiTh9n0XsgPEQr HIvNu34XUepXAmvP+ARZBe0U/wLkya/zVbEpoxvCy+4s9rphrvrBJHeWB+Bkqh2i+ApF6ra86c Wy4= X-SBRS: 2.7 X-MesageID: 10211658 X-Ironport-Server: esa6.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.69,325,1571716800"; d="scan'208";a="10211658" From: Anthony PERARD To: Date: Tue, 17 Dec 2019 10:59:00 +0000 Message-ID: <20191217105901.68158-6-anthony.perard@citrix.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191217105901.68158-1-anthony.perard@citrix.com> References: <20191217105901.68158-1-anthony.perard@citrix.com> MIME-Version: 1.0 Subject: [Xen-devel] [XEN PATCH v2 5/6] xen: Use $(CONFIG_CC_IS_CLANG) instead of $(clang) in Makefile X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Stefano Stabellini , Julien Grall , Wei Liu , Konrad Rzeszutek Wilk , George Dunlap , Andrew Cooper , Ian Jackson , Jan Beulich , Anthony PERARD , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Kconfig can check if $(CC) is clang or not, if it is CONFIG_CC_IS_CLANG will be set. With that patch, the hypervisor can be built using clang by running `make CC=3Dclang CXX=3Dclang++` without needed to provide an extra clang parameter. `make clang=3Dy` still works as Config.mk will set CC and CXX. Signed-off-by: Anthony PERARD Acked-by: Andrew Cooper --- xen/Rules.mk | 8 ++++---- xen/arch/x86/Rules.mk | 2 +- xen/common/coverage/Makefile | 2 +- xen/include/Makefile | 2 +- 4 files changed, 7 insertions(+), 7 deletions(-) diff --git a/xen/Rules.mk b/xen/Rules.mk index d053dbd26526..fcdafd029342 100644 --- a/xen/Rules.mk +++ b/xen/Rules.mk @@ -64,7 +64,7 @@ CFLAGS +=3D -pipe -D__XEN__ -include $(BASEDIR)/include/x= en/config.h CFLAGS-$(CONFIG_DEBUG_INFO) +=3D -g CFLAGS +=3D '-D__OBJECT_FILE__=3D"$@"' =20 -ifneq ($(clang),y) +ifneq ($(CONFIG_CC_IS_CLANG),y) # Clang doesn't understand this command line argument, and doesn't appear = to # have an suitable alternative. The resulting compiled binary does functi= on, # but has an excessively large symbol table. @@ -126,7 +126,7 @@ subdir-all :=3D $(subdir-y) $(subdir-n) $(filter %.init.o,$(obj-y) $(obj-bin-y) $(extra-y)): CFLAGS +=3D -DINIT_SE= CTIONS_ONLY =20 ifeq ($(CONFIG_COVERAGE),y) -ifeq ($(clang),y) +ifeq ($(CONFIG_CC_IS_CLANG),y) COV_FLAGS :=3D -fprofile-instr-generate -fcoverage-mapping else COV_FLAGS :=3D -fprofile-arcs -ftest-coverage @@ -143,7 +143,7 @@ endif =20 ifeq ($(CONFIG_LTO),y) CFLAGS +=3D -flto -LDFLAGS-$(clang) +=3D -plugin LLVMgold.so +LDFLAGS-$(CONFIG_CC_IS_CLANG) +=3D -plugin LLVMgold.so # Would like to handle all object files as bitcode, but objects made from # pure asm are in a different format and have to be collected separately. # Mirror the directory tree, collecting them as built_in_bin.o. @@ -197,7 +197,7 @@ SRCPATH :=3D $(patsubst $(BASEDIR)/%,%,$(CURDIR)) %.o: %.c Makefile ifeq ($(CONFIG_ENFORCE_UNIQUE_SYMBOLS),y) $(CC) $(CFLAGS) -c $< -o $(@D)/.$(@F).tmp -ifeq ($(clang),y) +ifeq ($(CONFIG_CC_IS_CLANG),y) $(OBJCOPY) --redefine-sym $<=3D$(SRCPATH)/$< $(@D)/.$(@F).tmp $@ else $(OBJCOPY) --redefine-sym $(