On 2006-10-30, Jan Beulich wrote:
>
>>> In `19-rc3/include/Kbuild.include', just below `as-instr' i see:
>>> ,--
>>> |cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
>>> | > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
>>> |
>>> |# cc-option-yn
>>> |# Usage: flag := $(call cc-option-yn, -march=winchip-c6)
>>> |cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
>>> | > /dev/null 2>&1; then echo "y"; else echo "n"; fi;)
>>> `--
>>> so, change to `-o /dev/null' in `as-instr' will just follow this.
>>
>>gcc does not delete files specified with -o - but binutils does.
>>So using /dev/null in this case is not an option.
Hmm. What's the preblem to invoke `as' via the GNU C compiler, then?
> While I fixed this quite some time ago (after running into it myself), it
> obviously still is a problem with older versions. However, using as' -Z
> option seems to help here.
> On the other hand, I long wanted to compose a patch to do away
> with all the .tmp_* things at the build root, and move them into a
> single .tmp/ directory - this would also seem to make a nice place to
> put all sort of other temporary files in... I just never found the time
> to actually do that, sorry.
Maybe it's good idea, let me try, as i already bound to kbuild fixes.
But now, i'm just using KBUILD_OUTPUT=/tmp/, and /tmp/ is /dev/shm/.
It speeds up things on testing and small amounts of stuff to build.
Source tree is for patching only.
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