[U-Boot] without board level config.mk How to add CPPFLAGS

[zzs]

> In message <20110328080338.GB26252 at greatfirst.com> you wrote:
> > Because the board level config.mk not suggested now(I had seen in some
> > email message). So now how can I add my own CPPFLAGS or
> > PLATFORM_CPPFLAGS direct in board level Makefile (For some header search
> > path)?
>
> What exactly would you need board specific CPPFLAGS settings for?
>
I just want to add a -iquote flag for searching my header file which in
the linux driver dir.

I had wrote a linux driver and has a header file in it. Now I want to
write this driver for u-boot. So I think copy that header file to u-boot
source tree is not a good idea because I must modify two same file when
something wrong.

So I want add "-iquote my/header/dir" to CPPFLAGS

The Makefile like this :

	ifeq "$(REPOS_COMMON_DIR)" ""
	$(error "common repository path must defined in env!")
	else
	CPPFLAGS += -iquote $(REPOS_COMMON_DIR)/include -iquote $(REPOS_LINUX_DRIVER_DIR)
	endif

	...

	COBJS-$(CONFIG_ALTERA_FPGA) += cfg-altera-fpga.o

But when make it, the arm-linux-gcc command line not have my "-iquote"
flags.

Now I add them to both CPPFLAGS and CFLAGS, like this:

	ifeq "$(REPOS_COMMON_DIR)" ""
	$(error "common repository path must defined in env!")
	else
	CPPFLAGS += -iquote $(REPOS_COMMON_DIR)/include -iquote $(REPOS_LINUX_DRIVER_DIR)
	CFLAGS += -iquote $(REPOS_COMMON_DIR)/include -iquote $(REPOS_LINUX_DRIVER_DIR)
	endif

	...

	COBJS-$(CONFIG_ALTERA_FPGA) += cfg-altera-fpga.o

It now works! but it's so strange!!

Is there any good methods?

-- 
Best Regards,
zzs