I have a script that cross-compiles ffmpeg on Ubuntu for Windows.
Because it is faster to download a snapshot and extract it than
doing a git clone the script uses
http://ffmpeg.org/releases/ffmpeg-snapshot-git.tar.bz2
Recently I ran into unresolved externals in x86/dirac_dwt_init.c/o.
Details below. A clumsy workaround:
$ rm -f libavcodec/x86/dirac*
$ git stash
The problem seems to be that the snapshots differ from a git clone
and for instance contain >50 untracked files, amongst which:
libavcodec/x86/dirac_dwt.c
libavcodec/x86/dirac_dwt.h
libavcodec/x86/diracdsp_mmx.c
libavcodec/x86/diracdsp_mmx.h
libavcodec/x86/diracdsp_yasm.asm
libavcodec/x86/dwt_yasm.asm
libavcodec/x86/vc1dsp.asm
A git clone has only these files:
libavcodec/x86/diracdsp.asm
libavcodec/x86/diracdsp_init.c
libavcodec/x86/dirac_dwt.asm
libavcodec/x86/dirac_dwt_init.c
Question: why are the snapshots different from a git clone?
--
Jan
Details of the builds below
(more undefined references)
/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt_init.c:138: undefined reference
to `ff_vertical_compose_dd137iL0_mmx'
libavcodec/libavcodec.a(dirac_dwt_init.o): In function
`vertical_compose_dirac53iH0_mmx':
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt_init.c:138: undefined
reference to `ff_vertical_compose_dirac53iH0_mmx'
libavcodec/libavcodec.a(dirac_dwt_init.o): In function
`vertical_compose_dd97iH0_mmx':
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt_init.c:138: undefined
reference to `ff_vertical_compose_dd97iH0_mmx'
libavcodec/libavcodec.a(dirac_dwt_init.o): In function
`vertical_compose53iL0_mmx':
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt_init.c:138: undefined
reference to `ff_vertical_compose53iL0_mmx'
collect2: error: ld returned 1 exit status
collect2: error: ld returned 1 exit status
make: *** [ffmpeg_g.exe] Error 1
make: *** Waiting for unfinished jobs....
make: *** [ffplay_g.exe] Error 1
jan@box:~/sandbox/win32/ffmpeg$ ls -la
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac*
-rw-rw-r-- 1 jan jan 8500 Jul 22 18:20
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/diracdsp.asm
-rw-rw-r-- 1 jan jan 122 Aug 2 01:09
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/diracdsp.d
-rw-rw-r-- 1 jan jan 8883 Jul 22 18:20
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/diracdsp_init.c
-rw-rw-r-- 1 jan jan 225 Aug 2 01:09
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/diracdsp_init.d
-rw-rw-r-- 1 jan jan 17146 Aug 2 01:09
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/diracdsp_init.o
-rw-r--r-- 1 jan jan 6752 Jul 21 2014
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/diracdsp_mmx.c
-rw-r--r-- 1 jan jan 2176 Nov 1 2012
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/diracdsp_mmx.h
-rw-rw-r-- 1 jan jan 4262 Aug 2 01:09
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/diracdsp.o
-rw-rw-r-- 1 jan jan 6687 Jul 26 2015
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/diracdsp_yasm.asm
-rw-rw-r-- 1 jan jan 7514 Feb 6 19:20
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt.asm
-rw-r--r-- 1 jan jan 6946 Jul 21 2014
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt.c
-rw-rw-r-- 1 jan jan 243 Aug 2 01:09
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt.d
-rw-r--r-- 1 jan jan 1190 May 25 2013
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt.h
-rw-rw-r-- 1 jan jan 7800 Feb 6 19:20
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt_init.c
-rw-rw-r-- 1 jan jan 226 Aug 2 01:09
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt_init.d
-rw-rw-r-- 1 jan jan 18426 Aug 2 01:09
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt_init.o
-rw-rw-r-- 1 jan jan 15806 Aug 2 01:09
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt.o
jan@box:~/sandbox/win32/ffmpeg$ rm -f
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac*
jan@box:~/sandbox/win32/ffmpeg$ git stash
Saved working directory and index state WIP on master: d9b0b1a applied
HEAD is now at d9b0b1a applied
jan@box:~/sandbox/win32/ffmpeg$ ls -la
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac*
-rw-rw-r-- 1 jan jan 8500 Aug 2 01:16
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/diracdsp.asm
-rw-rw-r-- 1 jan jan 8883 Aug 2 01:16
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/diracdsp_init.c
-rw-rw-r-- 1 jan jan 7514 Aug 2 01:16
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt.asm
-rw-rw-r-- 1 jan jan 7800 Aug 2 01:16
/home/jan/sandbox/win32/ffmpeg/libavcodec/x86/dirac_dwt_init.c
jan@box:~/sandbox/win32/ffmpeg$ git status
Untracked files:
(use "git add <file>..." to include in what will be committed)
libavcodec/aac_tablegen.c
libavcodec/aac_tablegen.h
libavcodec/aac_tablegen_decl.h
libavcodec/aacsbr_fixed_tablegen.c
libavcodec/aacsbr_tablegen.c
libavcodec/arm/dcadsp_init_arm.c
libavcodec/arm/dcadsp_neon.S
libavcodec/arm/dcadsp_vfp.S
libavcodec/arm/dct-test.c
libavcodec/dct-test.c
libavcodec/dsd_tablegen.c
libavcodec/fft-fixed-test.c
libavcodec/fft-fixed32-test.c
libavcodec/fft-test.c
libavcodec/g723_1_data.h
libavcodec/golomb-test.c
libavcodec/hevc_parse.c
libavcodec/imgconvert.h
libavcodec/libaacplus.c
libavcodec/libdcadec.c
libavcodec/libstagefright.cpp
libavcodec/libutvideo.h
libavcodec/libutvideodec.cpp
libavcodec/libutvideoenc.cpp
libavcodec/libvo-aacenc.c
libavcodec/mathops.c
libavcodec/motion-test.c
libavcodec/ppc/dct-test.c
libavcodec/svq3.h
libavcodec/x86/dct-test.c
libavcodec/x86/dirac_dwt.c
libavcodec/x86/dirac_dwt.h
libavcodec/x86/diracdsp_mmx.c
libavcodec/x86/diracdsp_mmx.h
libavcodec/x86/diracdsp_yasm.asm
libavcodec/x86/dwt_yasm.asm
libavcodec/x86/vc1dsp.asm
libavfilter/filtfmts.c
libavformat/libquvi.c
libavformat/md5enc.c
libavformat/noproxy-test.c
libavformat/seek-test.c
libavformat/url-test.c
libavresample/avresample-test.c
libavutil/softfloat.c
libavutil/utf8.c
libavutil/x86_cpu.h
libswresample/swresample-test.c
libswscale/colorspace-test.c
libswscale/swscale-test.c
tests/ref/fate/indeo2
tests/ref/fate/indeo3
tests/ref/fate/rscc
tests/ref/fate/screenpresso
tests/ref/fate/sgi-gray
tests/ref/vsynth/vsynth_lena-ffv1-v3-yuv420
tools/build_libstagefright
jan@box:~/sandbox/win32/ffmpeg$ make
YASM libavcodec/x86/dirac_dwt.o
STRIP libavcodec/x86/dirac_dwt.o
CC libavcodec/x86/dirac_dwt_init.o
YASM libavcodec/x86/diracdsp.o
STRIP libavcodec/x86/diracdsp.o
CC libavcodec/x86/diracdsp_init.o
AR libavcodec/libavcodec.a
LD ffmpeg_g.exe
CP ffmpeg.exe
STRIP ffmpeg.exe
LD ffplay_g.exe
CP ffplay.exe
STRIP ffplay.exe
LD ffprobe_g.exe
CP ffprobe.exe
STRIP ffprobe.exe
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