build: Add ccopts back into the build

The ccopts mechanism is needed for passing ARM assembler flags to GCC.
There are many gotchas in adding ASFLAGS. As things have moved
around, the revert doesn't remove cleanly, so this reverts and cleans
up the ccopts.

This reverts commit 25b56c3af514faa8a730d56fe14cae4960ac83aa.

Change-Id: I44c025535258e6afb05a814123c10c24775a88e8
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/7352
Tested-by: build bot (Jenkins)
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

5 files changed, 33 insertions, 28 deletions

diff --git a/Makefile b/Makefile
index fa421016926c..eaac22bb901d 100644
--- a/Makefile
+++ b/Makefile
@@ -219,12 +219,13 @@ alldirs:=$(sort $(abspath $(dir $(allobjs))))
 define create_cc_template
 # $1 obj class
 # $2 source suffix (c, S)
-# $3 additional dependencies
+# $3 additional compiler flags
+# $4 additional dependencies
 ifn$(EMPTY)def $(1)-objs_$(2)_template
 de$(EMPTY)fine $(1)-objs_$(2)_template
-$(obj)/$$(1).$(1).o: src/$$(1).$(2) $(obj)/config.h $(3)
+$(obj)/$$(1).$(1).o: src/$$(1).$(2) $(obj)/config.h $(4)
 	@printf "    CC         $$$$(subst $$$$(obj)/,,$$$$(@))\n"
-	$(CC_$(1)) -MMD $$$$(CPPFLAGS_$(1)) $$$$(CFLAGS_$(1)) -c -o $$$$@ $$$$<
+	$(CC_$(1)) $(3) -MMD $$$$(CPPFLAGS_$(1)) $$$$(CFLAGS_$(1)) -c -o $$$$@ $$$$<
 en$(EMPTY)def
 end$(EMPTY)if
 endef
@@ -232,7 +233,7 @@ endef
 filetypes-of-class=$(subst .,,$(sort $(suffix $($(1)-srcs))))
 $(foreach class,$(classes), \
 	$(foreach type,$(call filetypes-of-class,$(class)), \
-		$(eval $(call create_cc_template,$(class),$(type),$($(class)-$(type)-deps)))))
+		$(eval $(call create_cc_template,$(class),$(type),$($(class)-$(type)-ccopts),$($(class)-$(type)-deps)))))
 
 foreach-src=$(foreach file,$($(1)-srcs),$(eval $(call $(1)-objs_$(subst .,,$(suffix $(file)))_template,$(subst src/,,$(basename $(file))))))
 $(eval $(foreach class,$(classes),$(call foreach-src,$(class))))
diff --git a/Makefile.inc b/Makefile.inc
index 934755fd6887..1aa4ddefdadc 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -115,12 +115,13 @@ ramstage-postprocess=$(foreach d,$(sort $(dir $(1))), \
 	$(eval $(d)ramstage.o: $(call files-in-dir,$(d),$(1)); $$(LD_ramstage) -o $$@ -r $$^ ) \
 	$(eval ramstage-objs:=$(d)ramstage.o $(filter-out $(call files-in-dir,$(d),$(1)),$(ramstage-objs))))
 
-CPPFLAGS_romstage += -D__PRE_RAM__
+romstage-c-ccopts:=-D__PRE_RAM__
+romstage-S-ccopts:=-D__PRE_RAM__
 ifeq ($(CONFIG_TRACE),y)
-CFLAGS_ramstage += -finstrument-functions
+ramstage-c-ccopts:= -finstrument-functions
 endif
 ifeq ($(CONFIG_COVERAGE),y)
-CFLAGS_ramstage += -fprofile-arcs -ftest-coverage
+ramstage-c-ccopts+=-fprofile-arcs -ftest-coverage
 endif
 
 # try to fetch non-optional submodules
@@ -131,15 +132,18 @@ ifeq ($(CONFIG_USE_BLOBS),y)
 forgetthis:=$(shell git submodule update --init --checkout 3rdparty)
 endif
 
-CPPFLAGS_bootblock += -D__BOOT_BLOCK__ -D__PRE_RAM__
+bootblock-c-ccopts:=-D__BOOT_BLOCK__ -D__PRE_RAM__
+bootblock-S-ccopts:=-D__BOOT_BLOCK__ -D__PRE_RAM__
 
-CPPFLAGS_smmstub += -D__SMM__
-CPPFLAGS_smm += -D__SMM__
+smmstub-c-ccopts:=-D__SMM__
+smmstub-S-ccopts:=-D__SMM__
+smm-c-ccopts:=-D__SMM__
+smm-S-ccopts:=-D__SMM__
 
 # SMM TSEG base is dynamic
 ifneq ($(CONFIG_SMM_MODULES),y)
 ifeq ($(CONFIG_SMM_TSEG),y)
-CFLAGS_smm += -fpic
+smm-c-ccopts += -fpic
 endif
 endif
 
@@ -337,15 +341,15 @@ $(objutil)/%.o: $(objutil)/%.c
 
 $(obj)/%.ramstage.o $(abspath $(obj))/%.ramstage.o: $(obj)/%.c $(obj)/config.h $(OPTION_TABLE_H)
 	@printf "    CC         $(subst $(obj)/,,$(@))\n"
-	$(CC_ramstage) -MMD $(CFLAGS_ramstage) $(CPPFLAGS_ramstage) -c -o $@ $<
+	$(CC_ramstage) -MMD $(CFLAGS_ramstage) $(CPPFLAGS_ramstage) $(ramstage-c-ccopts) -c -o $@ $<
 
 $(obj)/%.romstage.o $(abspath $(obj))/%.romstage.o: $(obj)/%.c $(obj)/config.h $(OPTION_TABLE_H)
 	@printf "    CC         $(subst $(obj)/,,$(@))\n"
-	$(CC_romstage) -MMD -D__PRE_RAM__ $(CFLAGS_romstage) $(CPPFLAGS_romstage) -c -o $@ $<
+	$(CC_romstage) -MMD $(CFLAGS_romstage) $(CPPFLAGS_romstage) $(romstage-c-ccopts) -c -o $@ $<
 
 $(obj)/%.bootblock.o $(abspath $(obj))/%.bootblock.o: $(obj)/%.c $(obj)/config.h $(OPTION_TABLE_H)
 	@printf "    CC         $(subst $(obj)/,,$(@))\n"
-	$(CC_bootblock) -MMD $(CFLAGS_bootblock) $(CPPFLAGS_bootblock) -c -o $@ $<
+	$(CC_bootblock) -MMD $(CFLAGS_bootblock) $(CPPFLAGS_bootblock) $(bootblock-c-ccopts) -c -o $@ $<
 
 #######################################################################
 # Clean up rules
diff --git a/src/arch/arm/armv4/Makefile.inc b/src/arch/arm/armv4/Makefile.inc
index aa788688d033..6b516b9cf9cc 100644
--- a/src/arch/arm/armv4/Makefile.inc
+++ b/src/arch/arm/armv4/Makefile.inc
@@ -35,8 +35,8 @@ endif
 
 bootblock-y += cache.c
 
-CFLAGS_bootblock += $(armv4_flags)
-CPPFLAGS_bootblock += $(armv4_flags)
+bootblock-c-ccopts += $(armv4_flags)
+bootblock-S-ccopts += $(armv4_flags)
 
 endif # CONFIG_ARCH_BOOTBLOCK_ARMV4
 
@@ -47,8 +47,8 @@ endif # CONFIG_ARCH_BOOTBLOCK_ARMV4
 ifeq ($(CONFIG_ARCH_ROMSTAGE_ARMV4),y)
 
 
-CFLAGS_romstage += $(armv4_flags)
-CPPFLAGS_romstage += $(armv4_flags)
+romstage-c-ccopts += $(armv4_flags)
+romstage-S-ccopts += $(armv4_flags)
 
 endif # CONFIG_ARCH_ROMSTAGE_ARMV4
 
@@ -58,7 +58,7 @@ endif # CONFIG_ARCH_ROMSTAGE_ARMV4
 
 ifeq ($(CONFIG_ARCH_RAMSTAGE_ARMV4),y)
 
-CFLAGS_ramstage += $(armv4_flags)
-CPPFLAGS_ramstage += $(armv4_flags)
+ramstage-c-ccopts += $(armv4_flags)
+ramstage-S-ccopts += $(armv4_flags)
 
 endif # CONFIG_ARCH_RAMSTAGE_ARMV4
diff --git a/src/arch/arm/armv7/Makefile.inc b/src/arch/arm/armv7/Makefile.inc
index c46fb39c5ef4..4f3e75789c72 100644
--- a/src/arch/arm/armv7/Makefile.inc
+++ b/src/arch/arm/armv7/Makefile.inc
@@ -39,8 +39,8 @@ bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += exception.c
 bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += exception_asm.S
 bootblock-y += mmu.c
 
-CFLAGS_bootblock += $(armv7_flags)
-CPPFLAGS_bootblock += $(armv7_flags)
+bootblock-c-ccopts += $(armv7_flags)
+bootblock-S-ccopts += $(armv7_flags)
 
 endif # CONFIG_ARCH_BOOTBLOCK_ARMV7
 
@@ -56,8 +56,8 @@ romstage-y += exception.c
 romstage-y += exception_asm.S
 romstage-y += mmu.c
 
-CFLAGS_romstage += $(armv7_flags)
-CPPFLAGS_romstage += $(armv7_flags)
+romstage-c-ccopts += $(armv7_flags)
+romstage-S-ccopts += $(armv7_flags)
 
 endif # CONFIG_ARCH_ROMSTAGE_ARMV7
 
@@ -73,7 +73,7 @@ ramstage-y += exception.c
 ramstage-y += exception_asm.S
 ramstage-y += mmu.c
 
-CFLAGS_ramstage += $(armv7_flags)
-CPPFLAGS_ramstage += $(armv7_flags)
+ramstage-c-ccopts += $(armv7_flags)
+ramstage-S-ccopts += $(armv7_flags)
 
 endif # CONFIG_ARCH_RAMSTAGE_ARMV7
diff --git a/toolchain.inc b/toolchain.inc
index 1f95b6b2d825..0ed370f49ae3 100644
--- a/toolchain.inc
+++ b/toolchain.inc
@@ -90,8 +90,8 @@ OBJCOPY_$(1) := $(OBJCOPY_$(2))
 OBJDUMP_$(1) := $(OBJDUMP_$(2))
 STRIP_$(1) := $(STRIP_$(2))
 READELF_$(1) := $(READELF_$(2))
-CFLAGS_$(1) += $$(CFLAGS_common) $$(CFLAGS_$(2))
-CPPFLAGS_$(1) += $$(CPPFLAGS_common) $$(CPPFLAGS_$(2))
+CFLAGS_$(1) = $$(CFLAGS_common) $$(CFLAGS_$(2))
+CPPFLAGS_$(1) = $$(CPPFLAGS_common) $$(CPPFLAGS_$(2))
 LIBGCC_FILE_NAME_$(1) = $(wildcard $(shell $(CC_$(2)) $(CFLAGS_$(2)) -print-libgcc-file-name))
 LIBCLANG_RT_FILE_NAME_$(1) = $(shell $(CC_$(2)) $(CFLAGS_$(2)) -print-librt-file-name 2>/dev/null)
 endef