Re: [PATCH -mm] replacement for brokenkbuild-dont-put-temp-files-in-the-source-tree.patch

[Jan Beulich]

>> 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.

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.

Jan
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