[U-Boot] [PATCH] config.mk: add drivers as default include PATH

[Wolfgang Denk]

Dear Macpaul Lin,

In message <1292398049-3606-1-git-send-email-macpaul at andestech.com> you wrote:
> Some device drivers and their header files will
> invoke some definitions for assembly code. If a
> device is required to be initilized in board.S
> or in lowlevel_init.S, such memory controller,
> flash controller, power control units. Sometimes
> we both need to access these devices in bootstrap
> process and later in normal operation period.

I don't understand what you mean.  Do you have a specific example
where anything like this actually happens?

> Hence the definitions of these drivers in the
> header files is required to be found in cpu and
> board folders. Moreover, these devices is usually
> built into multiple different SoC with different
> architectures. So the header files should be able
> to be shared among the SoCs.

If this happens, these header files should be at some sufficiently
common location?

> Add this
> 	CPPFLAGS += -I$(TOPDIR)/drivers
> into the default include PATH will avoid such code
> 	"#include "../../../../../drivers/mtd/flash.h"

You should always stop, lean back and start thinking where you went
wrong whenever you encounter something that starts like this:

	#include "../../../../../xxx

This simply does not make sense.

Best regards,

Wolfgang Denk

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