getting memory errors when natively bulding native gnu gcc 3. 3.2 compiler on PQ2FADS-VR with 32 MB DRAM memory

Kai Ruottu
Thu Oct 21 09:18:00 GMT 2004

Povolotsky, Alexander wrote:

> I (may be being naive, but at least with good intensions ;-) )
> would like to consider this as a problem (bug ?) - in two areas:
> 1) Gnu gcc area:
>    a) At best - Gnu ggc folks need to attempt to overall improve (minimize)
> memory consumption
>       for 3.3.x and 3.4.x gcc builds
>    b) Less desirable - Gnu ggc folks need to improve configuration options
> and/or decrease memory consumption
>       in  "partial" (for example language-wise) builds
>    c) Also (IMHO) Gnu gcc folks need to provide option for doing "slower" (
> more iterative ?) gcc build process
>       but with guaranteed low memory consumption
>    d) At the very least - Gnu gcc folks need to clearly document current
> memory consumption reqs for
>       3.2.x, 3.3.x, 3.4.x .

  After trying to investigate this 'bug' more :

  On a 64 Mbyte RedHat 7 system, compiling the gcc-3.3.3 and 3.3.5 sources with
my self-built gcc-3.2.3 and with '-Os' seemed to need max. 36 Mbytes in both
cases with the problematic 'insn-recog.c' case... Seeing which module was under
construction in that period, compiling this one module was found to be the
'biggest' problem...

  Compiling gcc-3.3.3 with itself on Redhat 7 then raised the need to 41 Mbytes,
but not to the 115 Mbytes seen on Redhat 8. The gcc-3.3 on RH7 was made with and
against glibc-2.2.5 but the gcc-3.3 on RH 8 was made with the 'RH update RPMS'
glibc-2.3.2... No newer updates seen, maybe I must be brave and test installing
a new native glibc-2.3.3.

  So my understanding is that this is related to using glibc-2.3.2 as the runtime
shared libraries, reserving/freeing memory failing there somehow. But still
these 36 - 41 Mbytes needs can be too much for a 32 Mbyte build system.

  The 'uClibc' shows that people could need smaller libraries etc. in embedded
Linuces... Why kernel-2.6.x, glibc-2.3.x, gcc-3.3 or gcc-3.4 are absolutely
needed there despite of the "Law of More", is totally unclear for me... Could
someone explain this to me?

Want more information?  See the CrossGCC FAQ,
Want to unsubscribe? Send a note to

More information about the crossgcc mailing list