On Tue, Jun 25, 2019 at 7:15 PM Philip Kovacs via devel
<devel@lists.fedoraproject.org> wrote:
> I am finding that one of my c++ packages has compilation units that generate
> very large assembly (.s)
> files -- so large that any attempt to build them in memory (e.g. with -pipe)
> causes memory exhaustion.
> The only way I have found to reliably get the build to run to completion is
> by using -save-temps to force
> g++ to save the .s assembly files to disk. I also have to remove any (make)
> parallelism in the builds.
>
> I am doing this:
>
> %configure \
> CXXFLAGS="${CXXFLAGS} -save-temps" \
> ...
>
> and using make (-j1 implied) instead of make_build.
>
> Just curious if anyone has a better suggestion here.
I've got a few packages with that problem, too. Besides the
approaches you listed above, I've done all of the following at one
point or another (just for the affected files; no need to pessimize
everything):
- Reduce optimization level from -O2 to -O1 or -O0.
- Reduce debugging info level from -g (== -g2) to -g1 or -g0.
- Pass -Wl,--no-keep-memory and -Wl,--reduce-memory-overheads to the linker.
That last one is because the linker runs out of memory while linking
polymake on 32-bit platforms.
Good luck!
--
Jerry James
http://www.jamezone.org/
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