[MPlayer-dev-eng] ppc runtime-cpu-detection fails with gcc 3.3

[Diego Biurrun]

On Thu, Feb 23, 2006 at 04:45:00AM -0500, Alan Curry wrote:
> 
> Here's a simple test; interested parties report back with results and
> configure may be improved.
> 
>   echo 'void foo(void) { setjmp(); }' > gccbug.c
>   gcc -maltivec -mabi=altivec -S -o - gccbug.c | grep stv
> 
> With a good gcc, you'll get no output. With the 3.3 bug, you'll get something
> like this:
> 
>         stvx 20,1,0
> [...]
> 
> I already know 3.3.5 is bad. I'm almost certain that all 3.3.x's are bad, and
> everything >=3.4.0 is good. At least some versions <=3.2.x are good,
> according to the bugzilla reports on gcc.gnu.org, but I don't know exactly
> which ones. The Apple fork is a complete unknown...

Here's the output on my freshly installed OS X 10.4:

localhost:~ diegobiurrun$ gcc-3.3 -maltivec -mabi=altivec -S -o - gccbug.c | grep stv
localhost:~ diegobiurrun$ gcc-3.3 --version
gcc-3.3 (GCC) 3.3 20030304 (Apple Computer, Inc. build 1809)

Diego