build: CPPFLAGS is more common than INCLUDES

Rename INCLUDES to CPPFLAGS since the latter is more
commonly used for preprocessor options.

Change-Id: I522bb01c44856d0eccf221fa43d2d644bdf01d69
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/5764
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/Makefile.inc b/Makefile.inc
index b139403..d76fab9 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -214,12 +214,11 @@
 COREBOOT_EXTRA_VERSION := -$(call strip_quotes,$(CONFIG_LOCALVERSION))
 endif
 
-INCLUDES := -Isrc -Isrc/include -I$(obj)
-INCLUDES += -Isrc/device/oprom/include
-# abspath is a workaround for romcc
-INCLUDES += -include $(src)/include/kconfig.h
+CPPFLAGS := -Isrc -Isrc/include -I$(obj)
+CPPFLAGS += -Isrc/device/oprom/include
+CPPFLAGS += -include $(src)/include/kconfig.h
 
-CFLAGS_common = $(INCLUDES) -Os -pipe -g -nostdinc
+CFLAGS_common = $(CPPFLAGS) -Os -pipe -g -nostdinc
 CFLAGS_common += -nostdlib -Wall -Wundef -Wstrict-prototypes -Wmissing-prototypes
 CFLAGS_common += -Wwrite-strings -Wredundant-decls -Wno-trigraphs
 CFLAGS_common += -Wstrict-aliasing -Wshadow
diff --git a/src/arch/armv7/Makefile.inc b/src/arch/armv7/Makefile.inc
index 806198e..23e0bf6 100644
--- a/src/arch/armv7/Makefile.inc
+++ b/src/arch/armv7/Makefile.inc
@@ -41,7 +41,7 @@
 
 $(stages_o): $(stages_c) $(obj)/config.h
 	@printf "    CC         $(subst $(obj)/,,$(@))\n"
-	$(CC_armv7) -I. $(INCLUDES) $(INCLUDES_armv7) -c -o $@ $< -marm
+	$(CC_armv7) -I. $(CPPFLAGS) $(CPPFLAGS_armv7) -c -o $@ $< -marm
 
 endif # CONFIG_ARCH_ARMV7
 
@@ -86,10 +86,10 @@
 
 $(objgenerated)/bootblock.inc: $(src)/arch/armv7/$(subst ",,$(CONFIG_BOOTBLOCK_SOURCE)) $(bootblock_custom) $(OPTION_TABLE_H) $(obj)/config.h
 	@printf "    CC      $(subst $(obj)/,,$(@))\n"
-	$(CC_bootblock) $(bootblock-c-ccopts) $(INCLUDES) $(INCLUDES_bootblock) -MM \
+	$(CC_bootblock) $(bootblock-c-ccopts) $(CPPFLAGS) $(CPPFLAGS_bootblock) -MM \
 		-MT$(objgenerated)/bootblock.inc \
 		$< > $(objgenerated)/bootblock.inc.d
-	$(CC_bootblock) $(bootblock-c-ccopts) -c -S $(CFLAGS_bootblock) -I. $(INCLUDES) $(INCLUDES_bootblock) $< -o $@
+	$(CC_bootblock) $(bootblock-c-ccopts) -c -S $(CFLAGS_bootblock) -I. $(CPPFLAGS) $(CPPFLAGS_bootblock) $< -o $@
 
 $(objcbfs)/bootblock.debug:  $(objgenerated)/bootblock.o $(objgenerated)/bootblock.ld $$(bootblock-objs) $(stages) $(obj)/config.h
 	@printf "    LINK       $(subst $(obj)/,,$(@))\n"
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index b02df5a..6ff059c 100644
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -123,9 +123,9 @@
 
 $(objgenerated)/bootblock.inc: $(src)/arch/x86/init/$(subst ",,$(CONFIG_BOOTBLOCK_SOURCE)) $(objutil)/romcc/romcc $(OPTION_TABLE_H)
 	@printf "    ROMCC      $(subst $(obj)/,,$(@))\n"
-	$(CC_bootblock) $(INCLUDES) $(INCLUDES_bootblock) -MM -MT$(objgenerated)/bootblock.inc \
+	$(CC_bootblock) $(CPPFLAGS) $(CPPFLAGS_bootblock) -MM -MT$(objgenerated)/bootblock.inc \
 		$< > $(objgenerated)/bootblock.inc.d
-	$(ROMCC) -c -S $(bootblock_romccflags) -I. $(INCLUDES) $(INCLUDES_bootblock) $< -o $@
+	$(ROMCC) -c -S $(bootblock_romccflags) -I. $(CPPFLAGS) $(CPPFLAGS_bootblock) $< -o $@
 
 $(objcbfs)/bootblock.debug: $(objgenerated)/bootblock.o $(objgenerated)/bootblock.ld
 	@printf "    LINK       $(subst $(obj)/,,$(@))\n"
@@ -188,7 +188,7 @@
 
 $(obj)/mainboard/$(MAINBOARDDIR)/romstage.inc: $(src)/mainboard/$(MAINBOARDDIR)/romstage.c $(objutil)/romcc/romcc $(OPTION_TABLE_H) $(obj)/build.h $(obj)/config.h
 	printf "    ROMCC      romstage.inc\n"
-	$(ROMCC) -c -S $(ROMCCFLAGS) -D__PRE_RAM__ -I. $(INCLUDES) $(INCLUDES_romstage) $< -o $@
+	$(ROMCC) -c -S $(ROMCCFLAGS) -D__PRE_RAM__ -I. $(CPPFLAGS) $(CPPFLAGS_romstage) $< -o $@
 else
 
 $(obj)/mainboard/$(MAINBOARDDIR)/romstage.pre.inc: $(src)/mainboard/$(MAINBOARDDIR)/romstage.c $(OPTION_TABLE_H) $(obj)/build.h $(obj)/config.h
@@ -256,7 +256,7 @@
 
 $(objgenerated)/crt0.s: $(objgenerated)/crt0.romstage.S $(obj)/config.h $(obj)/build.h
 	@printf "    CC         $(subst $(obj)/,,$(@))\n"
-	$(CC_romstage) $(INCLUDES) -MMD -x assembler-with-cpp -E -I$(src)/include -I$(src)/arch/x86/include -I$(obj) -include $(obj)/config.h -include $(obj)/build.h -I. -I$(src) $< -o $@
+	$(CC_romstage) $(CPPFLAGS) -MMD -x assembler-with-cpp -E -I$(src)/include -I$(src)/arch/x86/include -I$(obj) -include $(obj)/config.h -include $(obj)/build.h -I. -I$(src) $< -o $@
 
 endif # CONFIG_ARCH_ROMSTAGE_X86_32
 
diff --git a/src/cpu/intel/fsp_model_206ax/Makefile.inc b/src/cpu/intel/fsp_model_206ax/Makefile.inc
index 6004462..8345002 100644
--- a/src/cpu/intel/fsp_model_206ax/Makefile.inc
+++ b/src/cpu/intel/fsp_model_206ax/Makefile.inc
@@ -9,6 +9,6 @@
 
 ifneq ($(CONFIG_MICROCODE_INCLUDE_PATH),)
 ifneq ($(wildcard $(shell realpath -L "$(top)/$(CONFIG_MICROCODE_INCLUDE_PATH)")),)
-INCLUDES += -I$(CONFIG_MICROCODE_INCLUDE_PATH)
+CPPFLAGS += -I$(CONFIG_MICROCODE_INCLUDE_PATH)
 endif
 endif
diff --git a/src/drivers/intel/fsp/Makefile.inc b/src/drivers/intel/fsp/Makefile.inc
index 9e083ec..86c3a85 100644
--- a/src/drivers/intel/fsp/Makefile.inc
+++ b/src/drivers/intel/fsp/Makefile.inc
@@ -22,7 +22,7 @@
 ramstage-$(CONFIG_ENABLE_MRC_CACHE) += fastboot_cache.c
 romstage-$(CONFIG_ENABLE_MRC_CACHE) += fastboot_cache.c
 
-INCLUDES += -Isrc/drivers/intel/fsp
+CPPFLAGS += -Isrc/drivers/intel/fsp
 
 ifeq ($(CONFIG_USE_GENERIC_FSP_CAR_INC),y)
 cpu_incs += $(src)/drivers/intel/fsp/cache_as_ram.inc
diff --git a/src/northbridge/intel/fsp_sandybridge/Makefile.inc b/src/northbridge/intel/fsp_sandybridge/Makefile.inc
index f5dbbe4..952c008 100644
--- a/src/northbridge/intel/fsp_sandybridge/Makefile.inc
+++ b/src/northbridge/intel/fsp_sandybridge/Makefile.inc
@@ -32,6 +32,6 @@
 smm-$(CONFIG_HAVE_SMI_HANDLER) += udelay.c
 smm-$(CONFIG_HAVE_SMI_HANDLER) += finalize.c
 
-INCLUDES += -I$(src)/northbridge/intel/fsp_sandybridge/fsp
+CPPFLAGS += -I$(src)/northbridge/intel/fsp_sandybridge/fsp
 
 $(obj)/northbridge/intel/fsp_sandybridge/acpi.ramstage.o : $(obj)/build.h
diff --git a/src/soc/intel/baytrail/Makefile.inc b/src/soc/intel/baytrail/Makefile.inc
index f93435b..179f2a6 100644
--- a/src/soc/intel/baytrail/Makefile.inc
+++ b/src/soc/intel/baytrail/Makefile.inc
@@ -53,7 +53,7 @@
 # Remove as ramstage gets fleshed out
 ramstage-y += placeholders.c
 
-INCLUDES += -Isrc/soc/intel/baytrail/
+CPPFLAGS += -Isrc/soc/intel/baytrail/
 
 # Run an intermediate step when producing coreboot.rom
 # that adds additional components to the final firmware
diff --git a/src/southbridge/intel/fsp_bd82x6x/Makefile.inc b/src/southbridge/intel/fsp_bd82x6x/Makefile.inc
index a1d3e62..fdb0431 100644
--- a/src/southbridge/intel/fsp_bd82x6x/Makefile.inc
+++ b/src/southbridge/intel/fsp_bd82x6x/Makefile.inc
@@ -70,4 +70,4 @@
 
 PHONY += bd82x6x_add_me
 
-INCLUDES += -I$(src)/southbridge/intel/fsp_bd82x6x
+CPPFLAGS += -I$(src)/southbridge/intel/fsp_bd82x6x
diff --git a/src/vendorcode/google/chromeos/Makefile.inc b/src/vendorcode/google/chromeos/Makefile.inc
index 2dcb03a..f0289f8 100644
--- a/src/vendorcode/google/chromeos/Makefile.inc
+++ b/src/vendorcode/google/chromeos/Makefile.inc
@@ -48,8 +48,7 @@
 VB_SOURCE := vboot_reference
 
 # Add the vboot include paths.
-VB_INCLUDES += -I$(VB_SOURCE)/firmware/include
-INCLUDES += $(VB_INCLUDES)
+CPPFLAGS += -I$(VB_SOURCE)/firmware/include
 
 VBOOT_STUB_ELF = $(obj)/vendorcode/google/chromeos/vbootstub.elf
 VBOOT_STUB = $(VBOOT_STUB_ELF).rmod
diff --git a/toolchain.inc b/toolchain.inc
index 576e744..ea67ad4 100644
--- a/toolchain.inc
+++ b/toolchain.inc
@@ -38,7 +38,7 @@
 
 toolchain_to_dir = \
 	$(foreach arch,$(ARCH_SUPPORTED),\
-	$(eval INCLUDES_$(ARCH_TO_TOOLCHAIN_$(arch)) = \
+	$(eval CPPFLAGS_$(ARCH_TO_TOOLCHAIN_$(arch)) = \
 	-Isrc/arch/$(ARCHDIR-$(ARCH_TO_TOOLCHAIN_$(arch)))/include))
 
 # set_stage_toolchain: Decides the toolchain to be used by every stage
@@ -64,8 +64,8 @@
 OBJDUMP_$(1) := $(OBJDUMP_$(2))
 STRIP_$(1) := $(STRIP_$(2))
 READELF_$(1) := $(READELF_$(2))
-INCLUDES_$(1) = -Isrc/arch/$(ARCHDIR-$(2))/include
-CFLAGS_$(1) = $$(CFLAGS_common) $$(INCLUDES_$(1)) $(CFLAGS_$(2))
+CPPFLAGS_$(1) = -Isrc/arch/$(ARCHDIR-$(2))/include
+CFLAGS_$(1) = $$(CFLAGS_common) $$(CPPFLAGS_$(1)) $(CFLAGS_$(2))
 LIBGCC_FILE_NAME_$(1) = $(shell [ -r `$(CC_$(2)) -print-libgcc-file-name` ] && \
 	$(CC_$(2)) -print-libgcc-file-name)
 endef