[PATCH]various build system improvements

[Patrick Georgi]

Hi,

attached patch improves various aspects in the build system:

make only needs to read Makefile.incs once, thanks to the
SECONDEXPANSION feature of GNU make (and we rely on GNU make for lots of
things already)

File paths are relative to the root directory, which simplifies
debugging (make V=1 gives shorter command lines) and helps ccache
finding matches for checkouts in different directories (even though it
should normalize paths itself)

It's abuild tested.

Signed-off-by: Patrick Georgi

[ron minnich]

Lovely. better and better.

Acked-by: Ronald G. Minnich

[PATCH] build.h handling, take 2

[Stefan Reinauer]

Does this patch make sense?

[PATCH] build.h handling, take 2

[Patrick Georgi]

Am 28.03.2010 23:47, schrieb Stefan Reinauer:
> Does this patch make sense?

Yes, I messed up that bit while trying to make things work with romcc
until we fix the -include issue.

Is it possible to include build.h where it is needed instead of passing
it in with -include? That might be a better workaround than the abspath
hack.

But for now, this is good, so
Acked-by: Patrick Georgi