From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2001:1868:205::9]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3sp33h17rVzDqQq for ; Tue, 4 Oct 2016 13:37:35 +1100 (AEDT) From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Linux Weekly News , Jiri Olsa , Jiri Olsa , Madhavan Srinivasan , Peter Zijlstra , Sukadev Bhattiprolu , linuxppc-dev@lists.ozlabs.org, Arnaldo Carvalho de Melo Subject: [PATCH 03/22] tools build: Add support for host programs format Date: Mon, 3 Oct 2016 23:37:02 -0300 Message-Id: <1475548641-12182-4-git-send-email-acme@kernel.org> In-Reply-To: <1475548641-12182-1-git-send-email-acme@kernel.org> References: <1475548641-12182-1-git-send-email-acme@kernel.org> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Jiri Olsa In some cases, like for fixdep and shortly for jevents, we need to build a tool to run on the host that will be used in building a tool, such as perf, that is being cross compiled, so do like the kernel and provide HOSTCC, HOSTLD and HOSTAR to do that. Signed-off-by: Jiri Olsa Requested-by: Andi Kleen Requested-and-Tested-by: Arnaldo Carvalho de Melo Cc: Madhavan Srinivasan Cc: Peter Zijlstra Cc: Sukadev Bhattiprolu Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/20160927141846.GA6589@krava Signed-off-by: Arnaldo Carvalho de Melo --- tools/build/Build.include | 5 +++++ tools/build/Makefile | 6 ++++++ tools/build/Makefile.build | 19 +++++++++++++++---- 3 files changed, 26 insertions(+), 4 deletions(-) diff --git a/tools/build/Build.include b/tools/build/Build.include index 4d000bc959b4..02489380d79b 100644 --- a/tools/build/Build.include +++ b/tools/build/Build.include @@ -90,3 +90,8 @@ 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)) + +### +## HOSTCC C flags + +host_c_flags = -Wp,-MD,$(depfile),-MT,$@ $(CHOSTFLAGS) -D"BUILD_STR(s)=\#s" $(CHOSTFLAGS_$(basetarget).o) $(CHOSTFLAGS_$(obj)) diff --git a/tools/build/Makefile b/tools/build/Makefile index 0d5a0e3a8fa9..653faee2a055 100644 --- a/tools/build/Makefile +++ b/tools/build/Makefile @@ -14,6 +14,12 @@ endef $(call allow-override,CC,$(CROSS_COMPILE)gcc) $(call allow-override,LD,$(CROSS_COMPILE)ld) +HOSTCC ?= gcc +HOSTLD ?= ld +HOSTAR ?= ar + +export HOSTCC HOSTLD HOSTAR + ifeq ($(V),1) Q = else diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build index 27f3583193e6..190519a94ce5 100644 --- a/tools/build/Makefile.build +++ b/tools/build/Makefile.build @@ -58,6 +58,9 @@ quiet_cmd_mkdir = MKDIR $(dir $@) quiet_cmd_cc_o_c = CC $@ cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< +quiet_cmd_host_cc_o_c = HOSTCC $@ + cmd_host_cc_o_c = $(HOSTCC) $(host_c_flags) -c -o $@ $< + quiet_cmd_cpp_i_c = CPP $@ cmd_cpp_i_c = $(CC) $(c_flags) -E -o $@ $< @@ -70,16 +73,24 @@ quiet_cmd_gen = GEN $@ # If there's nothing to link, create empty $@ object. quiet_cmd_ld_multi = LD $@ cmd_ld_multi = $(if $(strip $(obj-y)),\ - $(LD) -r -o $@ $(filter $(obj-y),$^),rm -f $@; $(AR) rcs $@) + $(LD) -r -o $@ $(filter $(obj-y),$^),rm -f $@; $(AR) rcs $@) + +quiet_cmd_host_ld_multi = HOSTLD $@ + cmd_host_ld_multi = $(if $(strip $(obj-y)),\ + $(HOSTLD) -r -o $@ $(filter $(obj-y),$^),rm -f $@; $(HOSTAR) rcs $@) + +ifneq ($(filter $(obj),$(hostprogs)),) + host = host_ +endif # Build rules $(OUTPUT)%.o: %.c FORCE $(call rule_mkdir) - $(call if_changed_dep,cc_o_c) + $(call if_changed_dep,$(host)cc_o_c) $(OUTPUT)%.o: %.S FORCE $(call rule_mkdir) - $(call if_changed_dep,cc_o_c) + $(call if_changed_dep,$(host)cc_o_c) $(OUTPUT)%.i: %.c FORCE $(call rule_mkdir) @@ -119,7 +130,7 @@ $(sort $(subdir-obj-y)): $(subdir-y) ; $(in-target): $(obj-y) FORCE $(call rule_mkdir) - $(call if_changed,ld_multi) + $(call if_changed,$(host)ld_multi) __build: $(in-target) @: -- 2.7.4