[Vm-dev] help with autoconf...
Bert Freudenberg
bert at freudenbergs.de
Wed Apr 22 20:04:11 UTC 2009
On 22.04.2009, at 21:58, Eliot Miranda wrote:
>
> Actually, no. -fno-omit-frame-pointer seems to *force* a frame
> pointer even on platforms that by default have none ... or is that
> what you need?
>
> Right. Somewhere (and I haven't found out where) the autoconf
> configuration decides to apply -fomit-frame-pointer, which is fine
> as it generates faster code, etc.
platforms/unix/config/acinclude.m4
If you change any of the autoconf stuff remember to run autoconf to
regenerate the configure script.
> But I need (actually, want; I could work around, but shouldn't have
> to) a frame pointer for one file, and a subsequent -fno-omit-frame-
> pointer will override a preceeding -fomit-frame-pointer with the
> compilers I'm aware of.
Good.
>
>> My problem, however, is how to get autoconf to generate a specific
>> compile rule for one file. I can define the alternative COMPILEALT
>> macro but I can't yet figure out how to spit out that rule for a
>> specific source file withoput hacking it at the wrong place. But
>> I'm getting closer :/
>
> Assuming you put it in the vm directory, hacking platforms/unix/vm/
> Makefile.in should do it, no?
>
> Thanks for the suggestion! tried it but no. So I think I have to
> duplicate the ${srcs} collection and processing in mkmf.
I meant to add a line for your file
myCogFile$o : myCogFile.c
$(COMPILE) -fomit-frame-pointer $@ myCogFile.c
- Bert -
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