[FFmpeg-devel] MacOS X Compile error with swscale

[Michael Niedermayer]

On Sat, Mar 29, 2008 at 05:25:05PM +0100, Diego Biurrun wrote:
> On Sat, Mar 29, 2008 at 04:47:54AM -0600, Scott Harper wrote:
> > I'm using the latest svn as of this writing.
> > 
> > I configure ffmpeg as follows:
> > 
> > ./configure --enable-shared --enable-gpl --disable-mmx --enable- 
> > libmp3lame --disable-vhook --enable-libfaad --enable-libfaac --enable- 
> > swscale
> > 
> > And I get the following error:
> > 
> > yuv2rgb.c: In function ?yuv2rgb_get_func_ptr?:
> > yuv2rgb.c:609: error: ?yuv420_rgb32_MMX2? undeclared (first use in  
> > this function)
> > yuv2rgb.c:609: error: (Each undeclared identifier is reported only once
> > yuv2rgb.c:609: error: for each function it appears in.)
> > yuv2rgb.c:610: error: ?yuv420_rgb24_MMX2? undeclared (first use in  
> > this function)
> > yuv2rgb.c:611: error: ?yuv420_rgb16_MMX2? undeclared (first use in  
> > this function)
> > yuv2rgb.c:612: error: ?yuv420_rgb15_MMX2? undeclared (first use in  
> > this function)
> > yuv2rgb.c:617: error: ?yuv420_rgb32_MMX? undeclared (first use in this  
> > function)
> > yuv2rgb.c:618: error: ?yuv420_rgb24_MMX? undeclared (first use in this  
> > function)
> > yuv2rgb.c:619: error: ?yuv420_rgb16_MMX? undeclared (first use in this  
> > function)
> > yuv2rgb.c:620: error: ?yuv420_rgb15_MMX? undeclared (first use in this  
> > function)
> > make[1]: *** [yuv2rgb.o] Error 1
> > make: *** [lib] Error 2
> > 
> > Looks like it's still trying to use some MMX code, even though I  
> > disabled it, perhaps?  (I'm open to being completely wrong about this.)
> 
> It is trying to use MMX2 code, not MMX code.  You could add
> --disable-mmx2 to the command line to make compilation go through
> or try the patch I created to fix the situation.

MMX2 implicates MMX.
Having the defines for MMX2 set but not the ones for MMX is a bug in 
configure IMO.


[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Good people do not need laws to tell them to act responsibly, while bad
people will find a way around the laws. -- Plato
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