Can't build 3.0.1 (32bit on 64bit): configure links against openjpeg2 even if 32bit library not installed

[Alexandre Demers]

Using ArchLinux 64.

Building ffmpeg from lib32-ffmpeg package (available under AUR) fails with:
libavcodec/libavcodec.so: undefined reference to `opj_stream_default_create'
libavcodec/libavcodec.so: undefined reference to `opj_destroy_codec'
libavcodec/libavcodec.so: undefined reference to `opj_read_header'
libavcodec/libavcodec.so: undefined reference to `opj_end_compress'
libavcodec/libavcodec.so: undefined reference to `opj_stream_destroy'
libavcodec/libavcodec.so: undefined reference to `opj_stream_set_skip_function'
libavcodec/libavcodec.so: undefined reference to `opj_stream_set_read_function'
libavcodec/libavcodec.so: undefined reference to `opj_set_error_handler'
libavcodec/libavcodec.so: undefined reference to `opj_stream_set_write_function'
libavcodec/libavcodec.so: undefined reference to `opj_set_warning_handler'
libavcodec/libavcodec.so: undefined reference to `opj_stream_set_user_data'
libavcodec/libavcodec.so: undefined reference to `opj_start_compress'
libavcodec/libavcodec.so: undefined reference to `opj_stream_set_user_data_length'
libavcodec/libavcodec.so: undefined reference to `opj_set_info_handler'
libavcodec/libavcodec.so: undefined reference to `opj_stream_set_seek_function'
collect2: error: ld returned 1 exit status
Makefile:128: recipe for target 'ffserver_g' failed
make: * [ffserver_g] Error 1
[...]

Building against lib32-openjpeg 1.5.2. All the undefined references seem related OpenJPEG 2.0.X (functions undefined under 1.5.2 but introduced under 2.X)

Manually launched ./configure (with options), then "make" and it failed the same way. Here is the option list:

./configure \

--prefix='/usr' \
--libdir=/usr/lib32 \
--shlibdir=/usr/lib32 \
--cc="gcc -m32" \
--disable-debug \
--disable-static \
--disable-stripping \
--enable-avisynth \
--enable-avresample \
--enable-fontconfig \
--enable-gnutls \
--enable-gpl \
--enable-ladspa \
--enable-libass \
--enable-libbluray \
--enable-libfreetype \
--enable-libfribidi \
--enable-libgsm \
--enable-libiec61883 \
--enable-libmodplug \
--enable-libmp3lame \
--enable-libopencore_amrnb \
--enable-libopencore_amrwb \
--disable-libopenjpeg \
--enable-libopus \
--enable-libpulse \
--enable-libschroedinger \
--enable-libspeex \
--enable-libtheora \
--enable-libv4l2 \
--enable-libvorbis \
--enable-libvpx \
--enable-libwebp \
--enable-libx264 \
--enable-libxvid \
--enable-shared \
--enable-version3 \
--enable-x11grab

Now, disabling libopenjpeg fix the error and the build finishes correctly (obviously).

[Carl Eugen Hoyos]

Replying to Oxalin:

Building against lib32-openjpeg 1.5.2. All the undefined references seem related OpenJPEG 2.0.X (functions undefined under 1.5.2 but introduced under 2.X)

This indicates that the versions of your instealled header and your installed library are different, I just tested compilation with openjpeg 1.5.2 and it works fine here.

If you believe there is a bug that can be fixed in FFmpeg, please test current FFmpeg git head with a minimal configure line, run make several times and provide the complete, uncut console output of an additional make V=1 ffmpeg run.
You can get installation support on the user mailing list.

[Alexandre Demers]

Replying to cehoyos:

Replying to Oxalin:

Building against lib32-openjpeg 1.5.2. All the undefined references seem related OpenJPEG 2.0.X (functions undefined under 1.5.2 but introduced under 2.X)

This indicates that the versions of your instealled header and your installed library are different, I just tested compilation with openjpeg 1.5.2 and it works fine here.

If you believe there is a bug that can be fixed in FFmpeg, please test current FFmpeg git head with a minimal configure line, run make several times and provide the complete, uncut console output of an additional make V=1 ffmpeg run.
You can get installation support on the user mailing list.

The ticket may have been closed a bit early. The problem seems to be related on how the library is being detected. I have the following installed:
openjpeg2 library (64 bit + headers)
openjpeg 1.5 (64 bit + headers)
openjpeg 1.5 (32 bit + headers provided by the 64 bit package)

The configuration should be able to detect that the openjpeg2 library (32 bit) is not available, even if the headers are available from the 64 bit version (and then move to testing version 1.5). 64 bit packages are always required by the 32 bit packages because of it is the 64 bit package that contains the header files. They are installed under /usr/include.

By the way, I use the following (as does the PKGBUILD) before calling "configure".
export PKG_CONFIG_PATH="/usr/lib32/pkgconfig"

[Carl Eugen Hoyos]

I oppose supporting your installation: Remove one of the headers so that exactly one is installed.

[Alexandre Demers]

Replying to cehoyos:

I oppose supporting your installation: Remove one of the headers so that exactly one is installed.

Impossible, openjpeg 1.5 is a depency for some packages, while openjpeg 2 is a depency to others. Since the headers are included in each packages, I have no control over the thing (I could manually delete a file). I'm sure there is a different way of selecting the right library only if it is actually installed. I'll dig a bit more on the thing.

[Cigaes]

Replying to Oxalin:

By the way, I use the following (as does the PKGBUILD) before calling "configure".
export PKG_CONFIG_PATH="/usr/lib32/pkgconfig"

PKG_CONFIG_PATH is for adding directories to the search path. You need to override the search path. See the documentation.