On Wed, Sep 4, 2013 at 8:16 PM, Simon Glass sjg@google.com wrote:

Hi Vadim,

OK I see.

You can do something like this:

CFLAGS_arch/arm/cpu/tegra20-common/warmboot_avp.o += -march=armv4t

(this is used by Tegra)

Regards, Simon

Ah, this works, thank you, Simon!

--vb

On Wed, Sep 4, 2013 at 8:25 PM, Vadim Bendebury vbendeb@chromium.org wrote:

...

this is the tweak

---------- Forwarded message ---------- From: Vadim Bendebury vbendeb@chromium.org Date: Wed, Sep 4, 2013 at 11:49 AM Subject: Compiling certain files with extra compiler flags To: uboot u-boot@lists.denx.de

Does u-boot provide the ability to change compilation options 'on the fly', say when certain files need to be compiled for symbolic debugging? I looked but did not find any.

How about something like this:

vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv $ git diff config.mk diff --git a/config.mk b/config.mk index 853e6d8..41cafbb 100644 --- a/config.mk +++ b/config.mk @@ -406,7 +406,7 @@ $(obj)%.o: %.c ifneq ($(CHECKSRC),0) $(CHECK) $(CHECKFLAGS) $(ALL_CFLAGS) $< endif

•   $(CC)  $(ALL_CFLAGS) -o $@ $< -c
  

•   $(CC)  $(ALL_CFLAGS) $(CPP_$(subst .,_,$<)) -o $@ $< -c
  

$(obj)%.i: %.c $(CPP) $(ALL_CFLAGS) -o $@ $< -c $(obj)%.s: %.c ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Then, say I want to have spl_boot.c compiled with extra flags, just invoking make like this does the trick:

CPP_spl_boot_c='-O0 -fno-default-inline' make ...

Or is there a better way?

--vb