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| author | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2014-02-04 17:24:19 +0900 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-02-19 11:07:50 -0500 |
| commit | 2b3c9d3ddd4e0b5a55d17e164e817b42cb555639 (patch) | |
| tree | 1e1c4ab380b87fdc02438a58c10ad501b97819fa | |
| parent | bf4b3de1013c1643ffb8f071292c0f0eabb265c3 (diff) | |
| download | u-boot-2b3c9d3ddd4e0b5a55d17e164e817b42cb555639.tar.gz | |
Makefile: move more flags to the top Makefile
Before this commit, most of compiler flags were defined in config.mk.
But it is redundant because config.mk is included from all recursive make.
This commit moves many complier flags to the top Makefile
and export them.
And we use new vaiarables to store them:
KBUILD_CPPFLAGS, KBUILD_CFLAGS, KBUILD_AFLAGS.
This will allow us to switch more smoothly to Kbuild.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
| -rw-r--r-- | Makefile | 35 | ||||
| -rw-r--r-- | config.mk | 41 |
2 files changed, 39 insertions, 37 deletions
@@ -226,11 +226,46 @@ CHECK = sparse CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF) +KBUILD_CPPFLAGS := -D__KERNEL__ + +KBUILD_CFLAGS := -Wall -Wstrict-prototypes \ + -Wno-format-security \ + -fno-builtin -ffreestanding +KBUILD_AFLAGS := -D__ASSEMBLY__ + export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC export CPP AR NM LDR STRIP OBJCOPY OBJDUMP export MAKE AWK export DTC CHECK CHECKFLAGS +export KBUILD_CPPFLAGS +export KBUILD_CFLAGS KBUILD_AFLAGS + +KBUILD_CFLAGS += -Os #-fomit-frame-pointer + +ifdef BUILD_TAG +KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"' +endif + +KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) + +KBUILD_CFLAGS += -g +# $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format> +# option to the assembler. +KBUILD_AFLAGS += -g + +# Report stack usage if supported +KBUILD_CFLAGS += $(call cc-option,-fstack-usage) + +KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral) + +# turn jbsr into jsr for m68k +ifeq ($(ARCH),m68k) +ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4) +KBUILD_AFLAGS += -Wa,-gstabs,-S +endif +endif + # load other configuration include $(TOPDIR)/config.mk @@ -90,19 +90,13 @@ endif ######################################################################### -# We don't actually use $(ARFLAGS) anywhere anymore, so catch people -# who are porting old code to latest mainline but not updating $(AR). -ARFLAGS = $(error update your Makefile to use cmd_link_o_target and not AR) RELFLAGS= $(PLATFORM_RELFLAGS) -DBGFLAGS= -g # -DDEBUG -OPTFLAGS= -Os #-fomit-frame-pointer OBJCFLAGS += --gap-fill=0xff gccincdir := $(shell $(CC) -print-file-name=include) -CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ - -D__KERNEL__ +CPPFLAGS = $(KBUILD_CPPFLAGS) $(RELFLAGS) # Enable garbage collection of un-used sections for SPL ifeq ($(CONFIG_SPL_BUILD),y) @@ -134,26 +128,10 @@ CPPFLAGS += -I$(OBJTREE)/include endif CPPFLAGS += -I$(TOPDIR)/include -I$(SRCTREE)/arch/$(ARCH)/include -CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \ +CPPFLAGS += -nostdinc \ -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) -CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes - -ifdef BUILD_TAG -CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"' -endif - -CFLAGS_SSP := $(call cc-option,-fno-stack-protector) -CFLAGS += $(CFLAGS_SSP) -# Some toolchains enable security related warning flags by default, -# but they don't make much sense in the u-boot world, so disable them. -CFLAGS_WARN := $(call cc-option,-Wno-format-nonliteral) \ - $(call cc-option,-Wno-format-security) -CFLAGS += $(CFLAGS_WARN) - -# Report stack usage if supported -CFLAGS_STACK := $(call cc-option,-fstack-usage) -CFLAGS += $(CFLAGS_STACK) +CFLAGS := $(KBUILD_CFLAGS) $(CPPFLAGS) BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%)) @@ -165,18 +143,7 @@ endif endif endif -# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format> -# option to the assembler. -AFLAGS_DEBUG := - -# turn jbsr into jsr for m68k -ifeq ($(ARCH),m68k) -ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4) -AFLAGS_DEBUG := -Wa,-gstabs,-S -endif -endif - -AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) +AFLAGS := $(KBUILD_AFLAGS) $(CPPFLAGS) LDFLAGS += $(PLATFORM_LDFLAGS) LDFLAGS_FINAL += -Bstatic |