AIX build very slow

AIX build very slow

[KRAJCSOVITS Gyorgy]

Hi,
   tried to build gcc-3.4.4 and gcc-4.0.0 on
$ uname -a
AIX localhost 2 5

   Both builds with ../gcc-xxx/configure --enable-threads=posix
--prefix=...

   Both slow down at a configure for G++, last couple of messages:
checking nan.h usability... no
checking nan.h presence... no
checking for nan.h... no
checking ieeefp.h usability... no
checking ieeefp.h presence... ^Cmake[1]: ***
[configure-target-libstdc++-v3] Error 129
make: *** [bootstrap-lean] Interrupt

I did a CTRL-C to stop it, each of these lines took 5-10 minutes alone.
Any idea ? Should I use pthreads=aix instead ?

bye, krajo

Re: AIX build very slow

[Carlo Corridore]

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I had the same problem with Aix 4.3.3.
It seems that Aix, during configuration, decrease the priority
of the configuring shell.
It goes faster changing configuring shell with bash Shell
(CONFIG_SHELL=/usr/local/bin/bash) before configure.


Bye.


KRAJCSOVITS Gyorgy wrote:
> Hi,
>    tried to build gcc-3.4.4 and gcc-4.0.0 on
> $ uname -a
> AIX localhost 2 5
> 
>    Both builds with ../gcc-xxx/configure --enable-threads=posix
> --prefix=...
> 
>    Both slow down at a configure for G++, last couple of messages:
> checking nan.h usability... no
> checking nan.h presence... no
> checking for nan.h... no
> checking ieeefp.h usability... no
> checking ieeefp.h presence... ^Cmake[1]: ***
> [configure-target-libstdc++-v3] Error 129
> make: *** [bootstrap-lean] Interrupt
> 
> I did a CTRL-C to stop it, each of these lines took 5-10 minutes alone.
> Any idea ? Should I use pthreads=aix instead ?
> 
> bye, krajo
> 
> 


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email;internet:carlo@alenianola.finmeccanica.it
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Re: AIX build very slow

[Daniel Berlin]

On Mon, 2005-05-23 at 14:45 +0200, Carlo Corridore wrote:
> I had the same problem with Aix 4.3.3.
> It seems that Aix, during configuration, decrease the priority
> of the configuring shell.

No, that's not it.
Its that ksh creates a ton of temp files to do operations that configure
is trying to do.
BASH does not, thus bash is much faster at configuring
(100x :P)

Re: AIX build very slow

[KRAJCSOVITS Gyorgy]

On Mon, 23 May 2005, Daniel Berlin wrote:

> On Mon, 2005-05-23 at 14:45 +0200, Carlo Corridore wrote:
> > I had the same problem with Aix 4.3.3.
> > It seems that Aix, during configuration, decrease the priority
> > of the configuring shell.
>
> No, that's not it.
> Its that ksh creates a ton of temp files to do operations that configure
> is trying to do.
> BASH does not, thus bash is much faster at configuring
> (100x :P)
>
Thanks everyone, that was it. Guess my plan to compile bash with gcc
backfired :)
For the archives: use bash instead of ksh as shell on AIX 5.2 if build is
very slow.
bye, krajo