[Bf-committers] scons issues with new ffmpeg package

[Ken Hughes]

Error compiling on linux:

gcc -o /home/blender/build/linux2/extern/ffmpeg/libavcodec/flacenc.o -c 
-pipe -fPIC -funsigned-char -fno-strict-aliasing -O0 -g 
-I"/home/blender/blender/extern/ffmpeg"/libswscale 
-I"/home/blender/blender/extern/ffmpeg"/libavcodec -fomit-frame-pointer 
-pthread -g -Wdeclaration-after-statement -Wall -Wno-switch 
-Wdisabled-optimization -Wpointer-arith -Wredundant-decls 
-Wno-pointer-sign -O3 -Wall -Wno-char-subscripts 
-Wdeclaration-after-statement -DXP_UNIX -DHAVE_AV_CONFIG_H 
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_ISOC9X_SOURCE 
-I/home/blender/build/linux2/extern/ffmpeg -Iextern/ffmpeg 
-I/home/blender/build/linux2/extern/ffmpeg/libavformat 
-Iextern/ffmpeg/libavformat 
-I/home/blender/build/linux2/extern/ffmpeg/libavcodec 
-Iextern/ffmpeg/libavcodec 
-I/home/blender/build/linux2/extern/ffmpeg/libswscale 
-Iextern/ffmpeg/libswscale 
-I/home/blender/build/linux2/extern/ffmpeg/libavutil 
-Iextern/ffmpeg/libavutil extern/ffmpeg/libavcodec/flacenc.c
extern/ffmpeg/libavcodec/h264.c: In function ‘decode_cabac_residual’:
extern/ffmpeg/libavcodec/h264.c:5099: warning: passing argument 4 of 
‘decode_significance_8x8_x86’ discards qualifiers from pointer target type
extern/ffmpeg/libavcodec/h264.c: At top level:
extern/ffmpeg/libavcodec/cabac.h:112: warning: ‘put_cabac_static’ 
defined but not used
extern/ffmpeg/libavcodec/cabac.h:158: warning: ‘put_cabac_terminate’ 
defined but not used
extern/ffmpeg/libavcodec/cabac.h:186: warning: ‘put_cabac_u’ defined but 
not used
extern/ffmpeg/libavcodec/cabac.h:221: warning: ‘put_cabac_ueg’ defined 
but not used
extern/ffmpeg/libavcodec/cabac.h:273: warning: ‘refill2’ defined but not 
used
extern/ffmpeg/libavcodec/cabac.h:811: warning: ‘get_cabac_u’ defined but 
not used
extern/ffmpeg/libavcodec/cabac.h:827: warning: ‘get_cabac_ueg’ defined 
but not used
extern/ffmpeg/libavcodec/cabac.h: In function ‘get_cabac_noinline’:
extern/ffmpeg/libavcodec/cabac.h:525: error: PIC register ‘%ebx’ 
clobbered in ‘asm’
extern/ffmpeg/libavcodec/cabac.h: In function ‘decode_cabac_residual’:
extern/ffmpeg/libavcodec/cabac.h:525: error: PIC register ‘%ebx’ 
clobbered in ‘asm’
extern/ffmpeg/libavcodec/cabac.h:741: error: PIC register ‘%ebx’ 
clobbered in ‘asm’
extern/ffmpeg/libavcodec/cabac.h:692: error: PIC register ‘%ebx’ 
clobbered in ‘asm’
extern/ffmpeg/libavcodec/cabac.h:525: error: PIC register ‘%ebx’ 
clobbered in ‘asm’
extern/ffmpeg/libavcodec/cabac.h:525: error: PIC register ‘%ebx’ 
clobbered in ‘asm’
extern/ffmpeg/libavcodec/cabac.h: In function ‘decode_cabac_mb_mvd’:
extern/ffmpeg/libavcodec/cabac.h:525: error: PIC register ‘%ebx’ 
clobbered in ‘asm’
extern/ffmpeg/libavcodec/cabac.h:525: error: PIC register ‘%ebx’ 
clobbered in ‘asm’
extern/ffmpeg/libavcodec/cabac.h: In function ‘decode_mb_cabac’:
extern/ffmpeg/libavcodec/cabac.h:525: error: PIC register ‘%ebx’ 
clobbered in ‘asm’
extern/ffmpeg/libavcodec/cabac.h:525: error: PIC register ‘%ebx’ 
clobbered in ‘asm’
extern/ffmpeg/libavcodec/cabac.h:525: error: PIC register ‘%ebx’ 
clobbered in ‘asm’
scons: *** [/home/blender/build/linux2/extern/ffmpeg/libavcodec/h264.o] 
Error 1
extern/ffmpeg/libavcodec/flacenc.c: In function ‘encode_residual’:
extern/ffmpeg/libavcodec/flacenc.c:756: warning: ‘weight’ may be used 
uninitialized in this function
scons: building terminated because of errors.


Peter Schlaile wrote:
> ... are fixed now :-)
>
> Seriously: I added scons support for the ffmpeg libraries bundled with
> blender. (I even learned Python for that purpose... funny language,
> indeed.)
>
> Should work out of the box for most users.
>
> If you use the same build-tree for different platforms, you will currently
> get in trouble, if you don't remove "config.mak" in extern/ffmpeg between
> builds. (SConstruct outputs a notice on the console during build though)
>
> I can simply run "./configure" on each scons-run, but that takes always
> some time... Suggestions still welcome. (Sadly, you have to run configure
> within the source tree. It expects to be run there...)
>
> Setting BF_FFMPEG_LIB to something different then the empty string will
> disable the building of the internal libs. (Otherwise, both would get
> linked in... :)
>
> Otherwise: enjoy!
>
> Sincerely,
> Peter
>
>
>
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