On September 18, 2015 8:59:27 PM IST, gaurav mishra <[email protected]> wrote: >On Fri, Sep 18, 2015 at 8:30 PM, Paul B Mahol <[email protected]> wrote: > >> On 9/18/15, gaurav mishra <[email protected]> wrote: >> > Hi, >> > I have written a app using ffmpeg's library and am able to compile >and >> run >> > it on my mac (slighly older version of ffmpeg installed). But when >i am >> > trying to build the code on ubuntu machine i am getting some errors >> > few of them being >> > >> > /home/ubuntu/ffmpeg_sources/ffmpeg/libavformat/rtmpproto.c:1087: >> undefined >> > reference to `inflate' >> > >> > /home/ubuntu/ffmpeg_sources/ffmpeg/libavformat/rtmpproto.c:1105: >> undefined >> > reference to `inflateEnd' >> > >> > /home/ubuntu/ffmpeg_sources/ffmpeg/libavformat/rtmpproto.c:1105: >> undefined >> > reference to `inflateEnd' >> > >> > /usr/local/lib/libavformat.a(swfdec.o): In function >`swf_read_packet': >> > >> > /home/ubuntu/ffmpeg_sources/ffmpeg/libavformat/swfdec.c:358: >undefined >> > reference to `uncompress' >> > >> > /usr/local/lib/libavformat.a(swfdec.o): In function >`swf_read_header': >> > >> > /home/ubuntu/ffmpeg_sources/ffmpeg/libavformat/swfdec.c:147: >undefined >> > reference to `inflateInit_' >> > >> > /usr/local/lib/libavformat.a(swfdec.o): In function `zlib_refill': >> > >> > /home/ubuntu/ffmpeg_sources/ffmpeg/libavformat/swfdec.c:115: >undefined >> > reference to `inflate' >> > >> > /usr/local/lib/libavformat.a(swfdec.o): In function >`swf_read_close': >> > >> > /home/ubuntu/ffmpeg_sources/ffmpeg/libavformat/swfdec.c:523: >undefined >> > reference to `inflateEnd' >> > >> > /usr/local/lib/libavcodec.a(cscd.o): In function `decode_frame': >> > >> > /home/ubuntu/ffmpeg_sources/ffmpeg/libavcodec/cscd.c:91: undefined >> > reference to `uncompress' >> > >> > /usr/local/lib/libavcodec.a(dxa.o): In function `decode_frame': >> > >> > /home/ubuntu/ffmpeg_sources/ffmpeg/libavcodec/dxa.c:250: undefined >> > reference to `uncompress' >> > >> > >> > the list of undefined reference errors is quite huge. >> > >> > the command which i am using to link looks like this-- >> > >> > g++ file1.o file2.o file3.o -L/usr/lib/x86_64-linux-gnu >> -L/usr/local/lib >> > -L/home/ubuntu/casablanca/Release/build.release/Binaries -lpthread >> > -lavutil -lavformat >> > -lavcodec -lavfilter -lboost_system -lboost_thread -lboost_chrono >> -lcpprest >> > -lswscale -o final >> >> >> Hmm try linking with -lzlib too. >> > >After some trial and errors i figured out the command to make it work. >i >had to link lzlib, libx264, libfdk-aac ,libopus -libva to make it work. > >-lavformat -lavcodec -lavutil -lpthread -lz -lfdk-aac -lx264 -lopus >-lswresample -lva -lboost_system -lboost_thread -lboost_chrono >-lcpprest > I wonder why the build worked on my mac with just following libs - >-lavformat -lavcodec -lavutil -lboost_system -lboost_thread >-lboost_chrono >-lcpprest > >> >> > the issue seems to be related to order of linking. is there a >mistake in >> > order in which i am linking the libs. >> > PS - lpthread was not required when i was building on my mac. >> > >> > following is the output of ffmpeg -i >> > >> > ffmpeg version N-75410-g58fe57d Copyright (c) 2000-2015 the FFmpeg >> > developers >> > >> > built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04) >> > >> > configuration: --enable-gpl --enable-libfdk-aac --enable-libx264 >> > --enable-libopus --enable-nonfree >> > >> > libavutil 55. 2.100 / 55. 2.100 >> > >> > libavcodec 57. 3.100 / 57. 3.100 >> > >> > libavformat 57. 2.100 / 57. 2.100 >> > >> > libavdevice 57. 0.100 / 57. 0.100 >> > >> > libavfilter 6. 5.100 / 6. 5.100 >> > >> > libswscale 4. 0.100 / 4. 0.100 >> > >> > libswresample 2. 0.100 / 2. 0.100 >> > >> > libpostproc 54. 0.100 / 54. 0.100 >> > >> _______________________________________________ >> Libav-user mailing list >> [email protected] >> http://ffmpeg.org/mailman/listinfo/libav-user >> > > >------------------------------------------------------------------------ > >_______________________________________________ >Libav-user mailing list >[email protected] >http://ffmpeg.org/mailman/listinfo/libav-user
You can use pkg-config. -- Sent from my Android device with K-9 Mail. Please excuse my brevity. _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
