Re: Out of memory while building GCC 12.1.0

[Jonathan Wakely <jwakely.gcc@gmail.com>]

On Fri, 10 Jun 2022 at 13:29, Fiodar Stryzhniou <fedor_qd@mail.ru> wrote:
>
> 6/10/22 у 3:18 PM Jonathan Wakely напісаў:
> > On Fri, 10 Jun 2022 at 13:15, Xi Ruoyao via Gcc-help
> > <gcc-help@gcc.gnu.org> wrote:
> >>
> >> On Fri, 2022-06-10 at 14:55 +0300, Fiodar Stryzhniou wrote:
> >>
> >> /* snip */
> >>
> >>> g++: fatal error: Killed signal terminated program cc1plus
> >>> compilation terminated.
> >>> g++: fatal error: Killed signal terminated program cc1plus
> >>> compilation terminated.
> >>> /bin/bash: line 2: 17472 Killed                  build/genautomata
> >>> ../../gcc-12.1.0/./gcc/common.md
> >>> ../../gcc-12.1.0/./gcc/config/arm/arm.md insn-conditions.md >
> >>> tmp-automata.cc
> >>> g++: fatal error: Killed signal terminated program cc1plus
> >>> compilation terminated.
> >>> make[2]: *** Deleting file 'doc/gccint.info'
> >>> make[2]: *** [Makefile:2492: s-attrtab] Interrupt
> >>> make[2]: *** [Makefile:1143: c/c-lang.o] Interrupt
> >>> make[2]: *** [Makefile:1143: c-family/stub-objc.o] Interrupt
> >>> make[2]: *** [Makefile:1143: attribs.o] Interrupt
> >>
> >> /* snip */
> >>
> >>> make[2]: *** [Makefile:1143: gimple-ssa-warn-access.o] Interrupt
> >>> make[2]: *** [Makefile:1143: gimple-ssa-warn-restrict.o] Interrupt
> >>> make[2]: *** [Makefile:1143: gimple-ssa-warn-alloca.o] Interrupt
> >>> make[2]: *** [Makefile:2475: s-automata] Interrupt
> >>> make[2]: *** [Makefile:3406: doc/gccint.info] Interrupt
> >>> make[2]: *** Deleting intermediate file 'gcc.pod'
> >>> make[1]: *** [Makefile:4620: all-gcc] Interrupt
> >>> make: *** [Makefile:1035: all] Interrupt
> >>>
> >>> Looks like fork-bomb.
> >>>
> >>> I have 8Gb ram. Adding 10Gb swap doesn't help.
> >>>
> >>> Here mine shell script used for easy gcc build -
> >>> https://github.com/fedor4ever/GCC4Symbian.
> >>
> >> It looks like you are using "make -j" without a number somehow.  Then
> >> make will attempt to fork as many parallel jobs as possible. Recheck
> >> your script.
> >
> > Yes, I think the problem is here:
> > https://github.com/fedor4ever/GCC4Symbian/blob/master/build-toolchain.sh#L35
> Defaul value here:
> https://github.com/fedor4ever/GCC4Symbian/blob/master/build-toolchain.sh#L25
> >
> > If you don't set that variable it will try to compile every file at
> > once. Either set the variable, or fix your script to use a sensible
> > default like -j"${NUMBER_OF_PROCESSORS:-1}"
> >
> >
> >>
> >> --
> >> Xi Ruoyao <xry111@xry111.site>
> >> School of Aerospace Science and Technology, Xidian University
>
> Looks like you right. Harcoded to -j6 helps.

Thousands and thousands of people have built GCC 12.1.0 successfully.
If you think you've found a fork bomb in the build process that nobody
else has seen, it's probably a problem with your commands, not GCC.