On Wed, Apr 22, 2009 at 1:43 PM, Bert Freudenberg bert@freudenbergs.dewrote:
On 22.04.2009, at 22:41, Eliot Miranda wrote:
On Wed, Apr 22, 2009 at 1:04 PM, Bert Freudenberg bert@freudenbergs.dewrote:
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 $@ myCogFile.c
Close but because COMPILE ends in "...-c -o" one can't write cogit$o : cogit.c $(COMPILE) -fno-omit-frame-pointer cogit$o $(srcdir)/vm/cogit.c
how about
cogit$o : cogit.c $(COMPILE) cogit$o -fno-omit-frame-pointer $(srcdir)/vm/cogit.c
Perfect. Thanks.