Undefined references - compile error on Linux Mint

[kybos]

Summary of the bug:
Various undefined references on linking.

How to reproduce:
I did exactly as described in "Compile FFmpeg for Ubuntu, Debian, or Mint" (​https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu).

This is the output part where the errors start:

LD ffmpeg_g
libavformat/libavformat.a(rtsp.o): In function `ff_rtsp_connect':
/home/xxx/ffmpeg_sources/ffmpeg/libavformat/rtsp.c:1888: undefined reference to `ff_log2_tab'
libavcodec/libavcodec.a(asvdec.o): In function `asv2_decode_block':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/asvdec.c:147: undefined reference to `ff_reverse'
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/asvdec.c:147: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(asvdec.o): In function `decode_frame':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/asvdec.c:231: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(asvenc.o): In function `asv2_put_bits':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/asvenc.c:40: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(asvenc.o): In function `put_bits':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/put_bits.h:198: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(asvenc.o):/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/asvenc.c:40: more undefined references to `ff_reverse' follow
libavcodec/libavcodec.a(tiertexseqv.o): In function `seq_decode_op1':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiertexseqv.c:111: undefined reference to `ff_log2_tab'
libavcodec/libavcodec.a(tiff.o): In function `tiff_unpack_fax':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiff.c:489: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(tiff.o): In function `deinvert_buffer':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiff.c:305: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(tiff.o): In function `tiff_unpack_strip':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiff.c:637: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(tiff.o): In function `deinvert_buffer':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiff.c:305: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(tiff.o): In function `tiff_unpack_strip':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiff.c:626: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(tiff.o):/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiff.c:663: more undefined references to `ff_reverse' follow
libavcodec/libavcodec.a(xsubdec.o): In function `decode_frame':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/xsubdec.c:158: undefined reference to `ff_log2_tab'
libavcodec/libavcodec.a(xsubenc.o): In function `put_xsub_rle':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/xsubenc.c:45: undefined reference to `ff_log2_tab'
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/xsubenc.c:45: undefined reference to `ff_log2_tab'
libavcodec/libavcodec.a(dsd.o): In function `ff_dsd2pcm_translate':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/dsd.c:80: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(aacps_fixed.o): In function `ff_ps_read_data_fixed':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/aacps.c:208: undefined reference to `ff_log2_tab'
libavcodec/libavcodec.a(aacps_float.o): In function `ff_ps_read_data':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/aacps.c:208: undefined reference to `ff_log2_tab'
libavformat/libavformat.a(matroskadec.o): In function `ebml_read_num':
/home/xxx/ffmpeg_sources/ffmpeg/libavformat/matroskadec.c:843: undefined reference to `ff_log2_tab'
/home/xxx/ffmpeg_sources/ffmpeg/libavformat/matroskadec.c:843: undefined reference to `ff_log2_tab'
/home/xxx/ffmpeg_sources/ffmpeg/libavformat/matroskadec.c:843: undefined reference to `ff_log2_tab'
libavcodec/libavcodec.a(bitstream.o): In function `bitswap_32':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/mathops.h:245: undefined reference to `ff_reverse'
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/mathops.h:245: undefined reference to `ff_reverse'
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/mathops.h:245: undefined reference to `ff_reverse'
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/mathops.h:245: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(s302m.o): In function `s302m_decode_frame':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/s302m.c:165: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(s302m.o):/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/s302m.c:144: more undefined references to `ff_reverse' follow
collect2: error: ld returned 1 exit status
Makefile:108: recipe for target 'ffmpeg_g' failed
make: * [ffmpeg_g] Error 1

[Carl Eugen Hoyos]

Please confirm that you test current FFmpeg git head, provide your configure line, gcc -v output, run make V=1 ffmpeg twice in a row and provide the console output of the second (!) run to make this a valid ticket.

[kybos]

Thanks.
As I wrote, I do exactly as described in the docu, which implies the download of the current ffmpeg snapshot, if I understand it correctly.

My input:

cd ~/ffmpeg_sources && wget -O ffmpeg-snapshot.tar.bz2 https://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2 && tar xjvf ffmpeg-snapshot.tar.bz2 && cd ffmpeg && PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure --prefix="$HOME/ffmpeg_build" --pkg-config-flags="--static" --extra-cflags="-I$HOME/ffmpeg_build/include" --extra-ldflags="-L$HOME/ffmpeg_build/lib" --extra-libs="-lpthread -lm" --bindir="$HOME/bin" --enable-gpl --enable-libaom --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree && PATH="$HOME/bin:$PATH" make && make install && hash -r

gcc -v output:

gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 7.3.0-27ubuntu1~18.04' --with-bugurl=​file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 7.3.0 (Ubuntu 7.3.0-27ubuntu1~18.04)

make V=1 ffmpeg (second run output):

make V=1 ffmpeg
gcc -Llibavcodec -Llibavdevice -Llibavfilter -Llibavformat -Llibavresample -Llibavutil -Llibpostproc -Llibswscale -Llibswresample -L/home/xxx/ffmpeg_build/lib -Wl,--as-needed -Wl,-z,noexecstack -Wl,--warn-common -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample -o ffmpeg_g fftools/ffmpeg_opt.o fftools/ffmpeg_filter.o fftools/ffmpeg_hw.o fftools/cmdutils.o fftools/ffmpeg.o -lavdevice -lavfilter -lavformat -lavcodec -lpostproc -lswresample -lswscale -lavutil -lm -lxcb -lXau -lXdmcp -lxcb-shm -lxcb -lXau -lXdmcp -lxcb-shape -lxcb -lXau -lXdmcp -lxcb-xfixes -lxcb-render -lxcb-shape -lxcb -lXau -lXdmcp -lasound -lm -ldl -lpthread -lrt -lSDL2 -Wl,--no-undefined -lm -ldl -lasound -lm -ldl -lpthread -lpulse-simple -lpulse -lsndio -lX11 -lXext -lXcursor -lXinerama -lXi -lXrandr -lXss -lXxf86vm -lwayland-egl -lwayland-client -lwayland-cursor -lxkbcommon -lpthread -lrt -lsndio -lXv -lX11 -lXext -pthread -lm -lva -lass -lm -lharfbuzz -lm -lglib-2.0 -pthread -lpcre -pthread -lgraphite2 -lfontconfig -lexpat -lfreetype -lexpat -lfribidi -lfreetype -lpng16 -lm -lz -lm -lz -lfreetype -lpng16 -lm -lz -lm -lz -lm -lz -lvpx -lm -lpthread -lvpx -lm -lpthread -lvpx -lm -lpthread -lvpx -lm -lpthread -pthread -lm -lz -L/home/xxx/ffmpeg_build/lib -laom -lm -lpthread -lfdk-aac -lm -lmp3lame -lm -lopus -lm -lvorbis -lm -logg -lvorbisenc -lvorbis -lm -logg -lx264 -lpthread -lm -ldl -L/home/xxx/ffmpeg_build/lib -lx265 -lstdc++ -lm -lgcc_s -lgcc -lgcc_s -lgcc -lrt -ldl -lnuma -lva -lm -lm -lm -pthread -lva-drm -lva -lva-x11 -lva -lvdpau -lX11 -lm -lva -lXv -lX11 -lXext -lpthread -lm
libavformat/libavformat.a(rtsp.o): In function `ff_rtsp_connect':
/home/xxx/ffmpeg_sources/ffmpeg/libavformat/rtsp.c:1888: undefined reference to `ff_log2_tab'
libavcodec/libavcodec.a(asvdec.o): In function `asv2_decode_block':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/asvdec.c:147: undefined reference to `ff_reverse'
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/asvdec.c:147: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(asvdec.o): In function `decode_frame':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/asvdec.c:231: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(asvenc.o): In function `asv2_put_bits':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/asvenc.c:40: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(asvenc.o): In function `put_bits':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/put_bits.h:198: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(asvenc.o):/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/asvenc.c:40: more undefined references to `ff_reverse' follow
libavcodec/libavcodec.a(tiertexseqv.o): In function `seq_decode_op1':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiertexseqv.c:111: undefined reference to `ff_log2_tab'
libavcodec/libavcodec.a(tiff.o): In function `tiff_unpack_fax':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiff.c:489: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(tiff.o): In function `deinvert_buffer':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiff.c:305: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(tiff.o): In function `tiff_unpack_strip':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiff.c:637: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(tiff.o): In function `deinvert_buffer':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiff.c:305: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(tiff.o): In function `tiff_unpack_strip':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiff.c:626: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(tiff.o):/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/tiff.c:663: more undefined references to `ff_reverse' follow
libavcodec/libavcodec.a(xsubdec.o): In function `decode_frame':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/xsubdec.c:158: undefined reference to `ff_log2_tab'
libavcodec/libavcodec.a(xsubenc.o): In function `put_xsub_rle':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/xsubenc.c:45: undefined reference to `ff_log2_tab'
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/xsubenc.c:45: undefined reference to `ff_log2_tab'
libavcodec/libavcodec.a(dsd.o): In function `ff_dsd2pcm_translate':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/dsd.c:80: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(aacps_fixed.o): In function `ff_ps_read_data_fixed':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/aacps.c:208: undefined reference to `ff_log2_tab'
libavcodec/libavcodec.a(aacps_float.o): In function `ff_ps_read_data':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/aacps.c:208: undefined reference to `ff_log2_tab'
libavformat/libavformat.a(matroskadec.o): In function `ebml_read_num':
/home/xxx/ffmpeg_sources/ffmpeg/libavformat/matroskadec.c:843: undefined reference to `ff_log2_tab'
/home/xxx/ffmpeg_sources/ffmpeg/libavformat/matroskadec.c:843: undefined reference to `ff_log2_tab'
/home/xxx/ffmpeg_sources/ffmpeg/libavformat/matroskadec.c:843: undefined reference to `ff_log2_tab'
libavcodec/libavcodec.a(bitstream.o): In function `bitswap_32':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/mathops.h:245: undefined reference to `ff_reverse'
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/mathops.h:245: undefined reference to `ff_reverse'
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/mathops.h:245: undefined reference to `ff_reverse'
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/mathops.h:245: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(s302m.o): In function `s302m_decode_frame':
/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/s302m.c:165: undefined reference to `ff_reverse'
libavcodec/libavcodec.a(s302m.o):/home/xxx/ffmpeg_sources/ffmpeg/libavcodec/s302m.c:144: more undefined references to `ff_reverse' follow
collect2: error: ld returned 1 exit status
Makefile:108: recipe for target 'ffmpeg_g' failed
make: * [ffmpeg_g] Error 1

[kybos]

The content of VERSION:
N-92617-gea68e02

[Carl Eugen Hoyos]

What do the following show?

$ nm libavutil/log2_tab.o
$ nm libavutil/libavutil.a |grep ff_log2_tab

[kybos]

$ nm libavutil/log2_tab.o
0000000000000000 R ff_log2_tab
$ nm libavutil/libavutil.a |grep ff_log2_tab
0000000000000000 R ff_log2_tab

[Carl Eugen Hoyos]

Do you have other files libavutil.a or libavutil.so in your file system?

[kybos]

Yes, there are the files from my normal ffmpeg installation:

/usr/lib/x86_64-linux-gnu/libavutil.a

/usr/lib/x86_64-linux-gnu/libavutil.so
/usr/lib/x86_64-linux-gnu/libavutil.so.55
/usr/lib/x86_64-linux-gnu/libavutil.so.55.78.100

[Carl Eugen Hoyos]

Replying to kybos:

Yes, there are the files from my normal ffmpeg installation:

/usr/lib/x86_64-linux-gnu/libavutil.a
/usr/lib/x86_64-linux-gnu/libavutil.so

Does linking work if you rename these two?

[kybos]

Unfortunately not, exactly the same error as before.

I renamed them so, I assume this should be sufficient:

sudo mv /usr/lib/x86_64-linux-gnu/libavutil.a /usr/lib/x86_64-linux-gnu/libavutil.a.bu
sudo mv /usr/lib/x86_64-linux-gnu/libavutil.so /usr/lib/x86_64-linux-gnu/libavutil.so.bu

[kybos]

I tried the same again with the current snapshot and now it works (even without renaming the files from the standard installation).
Closing the ticket.

[Carl Eugen Hoyos]

Thank you for testing again.