[Bug bootstrap/18422] New: configure scripts run incredibly slow when bootstrapping on AIX

["rumi at rtfm dot hu" <gcc-bugzilla at gcc dot gnu dot org>]

hardware: 2xPOWER3-II 450MHz/2GB RAM/36GB 10K disk
oslevel -r: 5200-03

I'm not too much into the gcc bootstrapping process but I
believe this occurs at stage2 (already using xgcc to compile),
at first when the configure script for libstdc++ runs.
The configure script is running at around a 1 (one!)
check/minute rate on the system above(64bit kernel, JFS2).
This leads to a build process duration of >12 hours on
that hardware (without building gcj). I tried this with
3.3.4 and 3.4.3 now, both do about the same.

In some mailing list archive I have found a hint to use
bash for CONFIG_SHELL instead of the default AIX ksh,
but this does not help much. The build process for 3.3.4
(a c and c++ only build) was successful otherwise.

I'm still running the 3.4.3 bootstrap since about 18 hours
now... The CPU load is less than 0.5 most of the time and
topas reports a disk write rate of 1.5MB/sec _continuously_.
Other autoconf-based packages used to configure within normal
time frames, so I suspect there might be some special
settings used in the gcc build process.

-- 
           Summary: configure scripts run incredibly slow when bootstrapping
                    on AIX
           Product: gcc
           Version: 3.4.3
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rumi at rtfm dot hu
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: powerpc-ibm-aix5.2.0.0
  GCC host triplet: powerpc-ibm-aix5.2.0.0
GCC target triplet: powerpc-ibm-aix5.2.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18422