building MPlayer: gcc-3.4.x compiler issues

[Albrecht Dreß]

Hi Joseph!

Am 09.01.05 23:48 schrieb(en) Joseph E. Sacco, Ph.D.:
> I built gcc-3.4.3 on a G4 7410 and used it to successfully build
> MPlayer.

Good news!

> In particular, yuv2rgb_altivec.c compiles, albeit with some warnings:
> 
>         /usr/local/gcc/3.4.3/bin/gcc -c -I../libvo -I../../libvo
>         -I/usr/X11R6/include -O4 -mcpu=7400 -mtune=7400 -maltivec
>         -mabi=altivec -pipe -ffast-math -fomit-frame-pointer
>         -D_REENTRANT -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64   -I.
>         -I..  -I.. -o yuv2rgb_altivec.o yuv2rgb_altivec.c
>         yuv2rgb_altivec.c: In function `altivec_yuv2packedX':
>         yuv2rgb_altivec.c:796: warning: assignment from incompatible
>         pointer type
>         yuv2rgb_altivec.c:803: warning: assignment from incompatible
>         pointer type

Well, I tried the command line like yours on that file:

cc -c -I../libvo -I../../libvo -I/usr/X11R6/include -O3 -mcpu=7400  
-mtune=7400 -maltivec -mabi=altivec -O4 -D_REENTRANT -D_LARGEFILE_SOURCE  
-D_FILE_OFFSET_BITS=64   -I. -I..  -I.. -o yuv2rgb_altivec.o  
yuv2rgb_altivec.c

and now it also compiles with gcc 3.3.3! There seeme to be a 7400 vs. 7450  
problem. Hmmm...

> * My other/2, who works in the embedded systems world, tells me than the
> G4 7410 and 7450 share the same instruction set in *user* mode, which is
> the mode we can access. So..., the compiler crash you reported is
> probably not instruction set related.

See above - looks like a weird compiler bug!

> * I am using the the 2.6.9 kernel headers.
> I don't think this is the source of the problem. I looked at the output
> from the preprocessor stage and do not see any include files from

Afaik, they didn't change a lot recently... But I replaced them by  
symlinks pointing to /usr/src/linux, which in turn points to my "current"  
source tree...

> * I upgraded binutils, which contains the ***assembler***,
[snip]
> 	binutils-2.15.92.0.2-6

Already building binutils-2.15.92.0.2-5.src.rpm from FC3 - where did you  
get release 6 from, btw?

> * your compiler is named "cc"
> I noticed in your code snippet that your compiler is named "cc".  I
> assume that "cc" actually points to the version of gcc that you assume
> you are using.

[albrecht at antares albrecht]$ cc --version
cc (GCC) 3.3.3 (Yellow Dog Linux 3.3.3-16.ydl.4)

> * watch the compiler crash with the "-v" option set to see if anything
> new can be learned.

Not really... I think I'll also compile gcc 3.4.3 as some other  
compilations failed with "-O3 -mcpu=7450" (gstreamer from Gnome 2.8, IIRC)

Thanks, cheers,

Albrecht.

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Albrecht Dreß  -  Johanna-Kirchner-Straße 13  -  D-53123 Bonn (Germany)
        Phone (+49) 228 6199571  -  mailto:albrecht.dress at arcor.de
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