Bug#447478: build failure in libswscale on ppc with CPU detection and w/o altivec

[Martin Michlmayr]

Package: ffmpeg
Version: 0.cvs20070307-6

When I build ffmpeg on a powerpc system without Altivec and with CPU
detection enabled, I get a build failure in libswscale.  The problem
is that libswscale/swscale_internal.h defines some parameters when
HAVE_ALTIVEC is set.  This is not set in my case.  However, swscale.c
relies on these paramaters not only when HAVE_ALTIVEC is set: it
either look for altivec, or for CPU detection.  This means that in my
case the parameters are not set (since HAVE_ALTIVEC) is not set but
the code still uses those parameters.

The error is:

make[2]: Entering directory `/build/olmec/ffmpeg-0.cvs20070307/libswscale'
gcc  -DHAVE_AV_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_ISOC9X_SOURCE -I"/build/olmec/ffmpeg-0.cvs20070307" -I"/build/olmec/ffmpeg-0.cvs20070307" -I"/build/olmec/ffmpeg-0.cvs20070307"/libavutil -fomit-frame-pointer -pthread -Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -O3  -c -o swscale.o swscale.c
In file included from swscale.c:844:
swscale_template.c: In function 'hyscale_C':
swscale_template.c:2556: warning: passing argument 4 of 'palToY_C' from incompatible pointer type
swscale_template.c: In function 'hcscale_C':
swscale_template.c:2772: warning: passing argument 6 of 'palToUV_C' from incompatible pointer type
swscale.c: In function 'gray16swap':
swscale.c:1794: warning: initialization from incompatible pointer type
swscale.c:1795: warning: initialization from incompatible pointer type
swscale.c: In function 'sws_setColorspaceDetails':
swscale.c:1903: warning: implicit declaration of function 'yuv2rgb_altivec_init_tables'
swscale.c: In function 'sws_getContext':
swscale.c:2247: error: 'SwsContext' has no member named 'vYCoeffsBank'
swscale.c:2248: error: 'SwsContext' has no member named 'vCCoeffsBank'
swscale.c:2252: error: 'SwsContext' has no member named 'vYCoeffsBank'
swscale.c:2259: error: 'SwsContext' has no member named 'vCCoeffsBank'
swscale.c: In function 'sws_freeContext':
swscale.c:2791: error: 'SwsContext' has no member named 'vYCoeffsBank'
swscale.c:2792: error: 'SwsContext' has no member named 'vYCoeffsBank'
swscale.c:2793: error: 'SwsContext' has no member named 'vCCoeffsBank'
swscale.c:2794: error: 'SwsContext' has no member named 'vCCoeffsBank'
make[2]: *** [swscale.o] Error 1
make[2]: Leaving directory `/build/olmec/ffmpeg-0.cvs20070307/libswscale'

-- 
Martin Michlmayr
http://www.cyrius.com/