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d="scan'208";a="16414428" From: Anthony PERARD To: Subject: [XEN PATCH v5 07/16] xen/build: Start using if_changed Date: Tue, 21 Apr 2020 17:11:59 +0100 Message-ID: <20200421161208.2429539-8-anthony.perard@citrix.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200421161208.2429539-1-anthony.perard@citrix.com> References: <20200421161208.2429539-1-anthony.perard@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit 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 , Andrew Cooper , Ian Jackson , George Dunlap , Jan Beulich , Anthony PERARD , Daniel De Graaf , Volodymyr Babchuk , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" This patch start to use if_changed introduced in a previous commit. Whenever if_changed is called, the target must have FORCE as dependency so that if_changed can check if the command line to be run has changed, so the macro $(real-prereqs) must be used to discover the dependencies without "FORCE". Whenever a target isn't in obj-y, it should be added to extra-y so the .*.cmd dependency file associated with the target can be loaded. This is done for xsm/flask/ and both common/lib{elf,fdt}/ and arch/x86/Makefile. For the targets that generate .*.d dependency files, there's going to be two dependency files (.*.d and .*.cmd) until we can merge them together in a later patch via fixdep from Linux. One cleanup, libelf-relocate.o doesn't exist anymore. We import cmd_ld and cmd_objcopy from Linux v5.4. Signed-off-by: Anthony PERARD Reviewed-by: Roger Pau Monné Acked-by: Jan Beulich --- Notes: v4: - typos - fix missing FORCE in libfdt/Makefile - typo flask vs flash in xsm - in xsm, use *_H_DEPEND in command lines of mkaccess and mkflask instead of $(real-prereq) to avoid including the script as argument of itself. xen/Rules.mk | 68 +++++++++++++++++++++++++++----------- xen/arch/arm/Makefile | 4 +-- xen/arch/x86/Makefile | 1 + xen/arch/x86/efi/Makefile | 7 ++-- xen/common/libelf/Makefile | 12 ++++--- xen/common/libfdt/Makefile | 11 +++--- xen/xsm/flask/Makefile | 17 +++++++--- 7 files changed, 85 insertions(+), 35 deletions(-) diff --git a/xen/Rules.mk b/xen/Rules.mk index 21cac7f5f51a..2e28c572305a 100644 --- a/xen/Rules.mk +++ b/xen/Rules.mk @@ -56,6 +56,18 @@ SPECIAL_DATA_SECTIONS := rodata $(foreach a,1 2 4 8 16, \ include Makefile +# Linking +# --------------------------------------------------------------------------- + +quiet_cmd_ld = LD $@ +cmd_ld = $(LD) $(XEN_LDFLAGS) -r -o $@ $(real-prereqs) + +# Objcopy +# --------------------------------------------------------------------------- + +quiet_cmd_objcopy = OBJCOPY $@ +cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $< $@ + define gendep ifneq ($(1),$(subst /,:,$(1))) DEPS += $(dir $(1)).$(notdir $(1)).d @@ -164,29 +176,47 @@ else $(CC) $(c_flags) -c $< -o $@ endif -%.o: %.S Makefile - $(CC) $(a_flags) -c $< -o $@ +quiet_cmd_cc_o_S = CC $@ +cmd_cc_o_S = $(CC) $(a_flags) -c $< -o $@ + +%.o: %.S FORCE + $(call if_changed,cc_o_S) + + +quiet_cmd_obj_init_o = INIT_O $@ +define cmd_obj_init_o + $(OBJDUMP) -h $< | sed -n '/[0-9]/{s,00*,0,g;p;}' | while read idx name sz rest; do \ + case "$$name" in \ + .*.local) ;; \ + .text|.text.*|.data|.data.*|.bss) \ + test $$sz != 0 || continue; \ + echo "Error: size of $<:$$name is 0x$$sz" >&2; \ + exit $$(expr $$idx + 1);; \ + esac; \ + done; \ + $(OBJCOPY) $(foreach s,$(SPECIAL_DATA_SECTIONS),--rename-section .$(s)=.init.$(s)) $< $@ +endef + +$(filter %.init.o,$(obj-y) $(obj-bin-y) $(extra-y)): %.init.o: %.o FORCE + $(call if_changed,obj_init_o) + +quiet_cmd_cpp_i_c = CPP $@ +cmd_cpp_i_c = $(CPP) $(filter-out -Wa$(comma)%,$(c_flags)) $< -o $@ + +quiet_cmd_cc_s_c = CC $@ +cmd_cc_s_c = $(CC) $(filter-out -Wa$(comma)%,$(c_flags)) -S $< -o $@ -$(filter %.init.o,$(obj-y) $(obj-bin-y) $(extra-y)): %.init.o: %.o Makefile - $(OBJDUMP) -h $< | sed -n '/[0-9]/{s,00*,0,g;p;}' | while read idx name sz rest; do \ - case "$$name" in \ - .*.local) ;; \ - .text|.text.*|.data|.data.*|.bss) \ - test $$sz != 0 || continue; \ - echo "Error: size of $<:$$name is 0x$$sz" >&2; \ - exit $$(expr $$idx + 1);; \ - esac; \ - done - $(OBJCOPY) $(foreach s,$(SPECIAL_DATA_SECTIONS),--rename-section .$(s)=.init.$(s)) $< $@ +quiet_cmd_s_S = CPP $@ +cmd_s_S = $(CPP) $(filter-out -Wa$(comma)%,$(a_flags)) $< -o $@ -%.i: %.c Makefile - $(CPP) $(filter-out -Wa$(comma)%,$(c_flags)) $< -o $@ +%.i: %.c FORCE + $(call if_changed,cpp_i_c) -%.s: %.c Makefile - $(CC) $(filter-out -Wa$(comma)%,$(c_flags)) -S $< -o $@ +%.s: %.c FORCE + $(call if_changed,cc_s_c) -%.s: %.S Makefile - $(CPP) $(filter-out -Wa$(comma)%,$(a_flags)) $< -o $@ +%.s: %.S FORCE + $(call if_changed,cpp_s_S) # Add intermediate targets: # When building objects with specific suffix patterns, add intermediate diff --git a/xen/arch/arm/Makefile b/xen/arch/arm/Makefile index 9f1ab2335756..b79ad55646bd 100644 --- a/xen/arch/arm/Makefile +++ b/xen/arch/arm/Makefile @@ -97,8 +97,8 @@ prelink_lto.o: $(ALL_OBJS) prelink.o: $(patsubst %/built_in.o,%/built_in_bin.o,$(ALL_OBJS)) prelink_lto.o $(LD) $(XEN_LDFLAGS) -r -o $@ $^ else -prelink.o: $(ALL_OBJS) - $(LD) $(XEN_LDFLAGS) -r -o $@ $^ +prelink.o: $(ALL_OBJS) FORCE + $(call if_changed,ld) endif $(TARGET)-syms: prelink.o xen.lds diff --git a/xen/arch/x86/Makefile b/xen/arch/x86/Makefile index a805e9982e85..44137d919b66 100644 --- a/xen/arch/x86/Makefile +++ b/xen/arch/x86/Makefile @@ -71,6 +71,7 @@ obj-$(CONFIG_TBOOT) += tboot.o obj-y += hpet.o obj-y += vm_event.o obj-y += xstate.o +extra-y += asm-macros.i x86_emulate.o: x86_emulate/x86_emulate.c x86_emulate/x86_emulate.h diff --git a/xen/arch/x86/efi/Makefile b/xen/arch/x86/efi/Makefile index 490d791aae2d..3e4c395b7535 100644 --- a/xen/arch/x86/efi/Makefile +++ b/xen/arch/x86/efi/Makefile @@ -1,7 +1,10 @@ CFLAGS-y += -fshort-wchar -%.o: %.ihex - $(OBJCOPY) -I ihex -O binary $< $@ +quiet_cmd_objcopy_o_ihex = OBJCOPY $@ +cmd_objcopy_o_ihex = $(OBJCOPY) -I ihex -O binary $< $@ + +%.o: %.ihex FORCE + $(call if_changed,objcopy_o_ihex) boot.init.o: buildid.o diff --git a/xen/common/libelf/Makefile b/xen/common/libelf/Makefile index 464c448d9d37..a92326c982e9 100644 --- a/xen/common/libelf/Makefile +++ b/xen/common/libelf/Makefile @@ -1,12 +1,16 @@ obj-bin-y := libelf.o nocov-y += libelf.o +libelf-objs := libelf-tools.o libelf-loader.o libelf-dominfo.o SECTIONS := text data $(SPECIAL_DATA_SECTIONS) +OBJCOPYFLAGS := $(foreach s,$(SECTIONS),--rename-section .$(s)=.init.$(s)) CFLAGS-y += -Wno-pointer-sign -libelf.o: libelf-temp.o Makefile - $(OBJCOPY) $(foreach s,$(SECTIONS),--rename-section .$(s)=.init.$(s)) $< $@ +libelf.o: libelf-temp.o FORCE + $(call if_changed,objcopy) -libelf-temp.o: libelf-tools.o libelf-loader.o libelf-dominfo.o #libelf-relocate.o - $(LD) $(XEN_LDFLAGS) -r -o $@ $^ +libelf-temp.o: $(libelf-objs) FORCE + $(call if_changed,ld) + +extra-y += libelf-temp.o $(libelf-objs) diff --git a/xen/common/libfdt/Makefile b/xen/common/libfdt/Makefile index e2a5e59380a0..6bd207cf8ffa 100644 --- a/xen/common/libfdt/Makefile +++ b/xen/common/libfdt/Makefile @@ -1,14 +1,17 @@ include Makefile.libfdt SECTIONS := text data $(SPECIAL_DATA_SECTIONS) +OBJCOPYFLAGS := $(foreach s,$(SECTIONS),--rename-section .$(s)=.init.$(s)) obj-y += libfdt.o nocov-y += libfdt.o CFLAGS-y += -I$(BASEDIR)/include/xen/libfdt/ -libfdt.o: libfdt-temp.o Makefile - $(OBJCOPY) $(foreach s,$(SECTIONS),--rename-section .$(s)=.init.$(s)) $< $@ +libfdt.o: libfdt-temp.o FORCE + $(call if_changed,objcopy) -libfdt-temp.o: $(LIBFDT_OBJS) - $(LD) $(XEN_LDFLAGS) -r -o $@ $^ +libfdt-temp.o: $(LIBFDT_OBJS) FORCE + $(call if_changed,ld) + +extra-y += libfdt-temp.o $(LIBFDT_OBJS) diff --git a/xen/xsm/flask/Makefile b/xen/xsm/flask/Makefile index 6db396347b1f..eebfceecc5fb 100644 --- a/xen/xsm/flask/Makefile +++ b/xen/xsm/flask/Makefile @@ -20,12 +20,21 @@ AV_H_FILES = include/av_perm_to_string.h include/av_permissions.h ALL_H_FILES = $(FLASK_H_FILES) $(AV_H_FILES) $(obj-y) ss/built_in.o: $(ALL_H_FILES) +extra-y += $(ALL_H_FILES) -$(subst include/,%/,$(FLASK_H_FILES)): $(FLASK_H_DEPEND) - $(CONFIG_SHELL) policy/mkflask.sh $(AWK) include $(FLASK_H_DEPEND) +mkflask := policy/mkflask.sh +quiet_cmd_mkflask = MKFLASK $@ +cmd_mkflask = $(CONFIG_SHELL) $(mkflask) $(AWK) include $(FLASK_H_DEPEND) -$(subst include/,%/,$(AV_H_FILES)): $(AV_H_DEPEND) - $(CONFIG_SHELL) policy/mkaccess_vector.sh $(AWK) $(AV_H_DEPEND) +$(subst include/,%/,$(FLASK_H_FILES)): $(FLASK_H_DEPEND) $(mkflask) FORCE + $(call if_changed,mkflask) + +mkaccess := policy/mkaccess_vector.sh +quiet_cmd_mkaccess = MKACCESS VECTOR $@ +cmd_mkaccess = $(CONFIG_SHELL) $(mkaccess) $(AWK) $(AV_H_DEPEND) + +$(subst include/,%/,$(AV_H_FILES)): $(AV_H_DEPEND) $(mkaccess) FORCE + $(call if_changed,mkaccess) obj-bin-$(CONFIG_XSM_FLASK_POLICY) += flask-policy.o flask-policy.o: policy.bin -- Anthony PERARD