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• Size Discrepany in the ‘du’ Command

  22 juin 2012, par Multimedia Mike — General

  I had a problem today while using the common Unix command ’du’. As a refresher, ’du’ stands for disk usage and is a handy tool for understanding how much disk space is being occupied.

  I think ’du’ is probably doing the right thing. The problem might be that I’m getting strange (read : 1/2 the expected number) when running the tool against directories on vmhgfs, the VMware filesystem.

  Science Project
  On an Ubuntu Linux VMware session, my home directory is on the main file system, which is ext4. The directory /mnt/hgfs is reported by ’mount’ to be of type vmhgfs and is shared with the host machine.

  Create a directory in the home directory and generate a 10 MiB file :

  mkdir /home/melanson/dir
  dd if=/dev/urandom of=/home/melanson/dir/random-file bs=1048576 count=10
  

  Create a directory on the shared drive and copy the same file :

  mkdir /mnt/hgfs/vmshare/dir
  cp /home/melanson/dir/random-file /mnt/hgfs/vmshare/dir
  

  Run ’du’ on each directory using the -k and -h options :

  du -k /home/melanson/dir /mnt/hgfs/vmshare/dir
  10244   /home/melanson/dir
  5120    /mnt/hgfs/vmshare/dir
  du -h /home/melanson/dir /mnt/hgfs/vmshare/dir
  
  11M    /home/melanson/directory
  
  5.0M   /mnt/hgfs/vmshare/directory
  

  I noticed this discrepancy when I was trying to pack a set of files (akin to ’tar’-ing) living in a directory in the shared location. I was going mad trying to understand why the original directory was only 2 MB as reported by ’du’ but the final packed file was 4 MB.

  To be fair, the man page for ’du’ succinctly states that the tool’s purpose is merely to "estimate file space usage".

• FFmpeg build error pkg-config can't find x265 /usr/bin/ld : cannot find -lnuma : No such file or directory

  1er janvier 2023, par slyfox1186

  I am trying to build ffmpeg with custom libraries from source code.

  


  Every package in my script builds as it should but when it gets time to run the ffmpeg build using all of the packages it fails with a weird error code shown at the bottom of the ffmpeg build log.

  


  BEGIN /home/jman/tmp/ffconf.JouXp6kg/test.c
    1   #include 
    2   #include 
    3   long check_x265_api_get(void) { return (long) x265_api_get; }
    4   int main(void) { int ret = 0;
    5    ret |= ((intptr_t)check_x265_api_get) & 0xFFFF;
    6   return ret; }
END /home/jman/tmp/ffconf.JouXp6kg/test.c
gcc -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -DPIC -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include/lilv-0 -I/usr/local/cuda/include -std=c11 -fomit-frame-pointer -fPIC -I/home/jman/Documents/ffmpeg-build/workspace/include -pthread -DLILV_STATIC -DSRATOM_STATIC -DSORD_STATIC -DSERD_STATIC -I/home/jman/Documents/ffmpeg-build/workspace/include/lilv-0 -I/home/jman/Documents/ffmpeg-build/workspace/include/sratom-0 -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include/sord-0 -I/home/jman/Documents/ffmpeg-build/workspace/include/serd-0 -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include/opus -I/home/jman/Documents/ffmpeg-build/workspace/include/opus -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include/srt -I/home/jman/Documents/ffmpeg-build/workspace/include/svt-av1 -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -I/home/jman/Documents/ffmpeg-build/workspace/include -L/usr/lib/x86_64-linux-gnu -c -o /home/jman/tmp/ffconf.JouXp6kg/test.o /home/jman/tmp/ffconf.JouXp6kg/test.c
gcc -L/home/jman/Documents/ffmpeg-build/workspace/lib -L/usr/local/cuda/lib64 -Wl,--as-needed -Wl,-z,noexecstack -L/usr/lib/x86_64-linux-gnu -o /home/jman/tmp/ffconf.JouXp6kg/test /home/jman/tmp/ffconf.JouXp6kg/test.o -lx265 -lstdc++ -lm -lgcc_s -lgcc -lgcc_s -lgcc -lrt -ldl -lnuma -ldl -lpthread -lm -lz
/usr/bin/ld: cannot find -lnuma: No such file or directory
collect2: error: ld returned 1 exit status
ERROR: x265 not found using pkg-config


  


  Does anyone know what this -lnuma is referring to ?

  


  I had no issues just a few days ago when I last ran my build script and then all of a sudden this issue appeared.

  


  This is my build script in its entirety : FFmpeg-build.sh

  


  Update : Per Allan Winds' instructions here is the output of :

  


  find /usr/lib -name libnuma\* -ls

  


    4987897     48 -rw-r--r--   1 root     root        48152 Mar 24  2022 /usr/lib/x86_64-linux-gnu/libnuma.so.1.0.0
  4992286     76 -rw-r--r--   1 root     root        77086 Mar 24  2022 /usr/lib/x86_64-linux-gnu/libnuma.a
  4987896      0 lrwxrwxrwx   1 root     root           16 Dec 29 12:03 /usr/lib/x86_64-linux-gnu/libnuma.so.1 -> libnuma.so.1.0.0
  4992287      0 lrwxrwxrwx   1 root     root           16 Mar 24  2022 /usr/lib/x86_64-linux-gnu/libnuma.so -> libnuma.so.1.0.0


  


• Cannot link an application with libavcodec

  25 mars 2020, par Igor Evdokimov

  I’m trying to make a simplest app with usage of ffmpeg libs.
  Here is my code :

  main.c :

  #include <libavcodec></libavcodec>avcodec.h>
  
  #include <libavformat></libavformat>avformat.h>
  
  #include <libswscale></libswscale>swscale.h>
  
  
  
  int main()
  
  {
  
  
  
      avformat_network_init();
  
      return 0;
  
  }

  compiler command :

  gcc -o main main.c -Wall  -lavformat -lavcodec -lswresample -lswscale -lavutil -lm -lz -lpthread -L/usr/local/lib/

  leads to :

  /usr/local/lib//libavformat.a(matroskaenc.o) : In function

  get_aac_sample_rates':
 /home/ievdokimov/repos/FFmpeg/libavformat/matroskaenc.c:709: undefined
 reference to

  avpriv_mpeg4audio_get_config2’
  /home/ievdokimov/repos/FFmpeg/libavformat/matroskaenc.c:709 : undefined
  reference to

  avpriv_mpeg4audio_get_config2'
 /usr/local/lib//libavformat.a(mux.o): In function
 

  ff_interleave_add_packet’ :
  /home/ievdokimov/repos/FFmpeg/libavformat/mux.c:936 : undefined
  reference to

  av_packet_make_refcounted'
 /usr/local/lib//libavformat.a(utils.o): In function
 

  ff_packet_list_put’ :
  /home/ievdokimov/repos/FFmpeg/libavformat/utils.c:461 : undefined
  reference to

  av_packet_make_refcounted'
 /usr/local/lib//libavformat.a(utils.o): In function

  parse_packet’ :
  /home/ievdokimov/repos/FFmpeg/libavformat/utils.c:1494 : undefined
  reference to

  av_packet_make_refcounted'
 /usr/local/lib//libavformat.a(utils.o): In function

  ff_read_packet’ :
  /home/ievdokimov/repos/FFmpeg/libavformat/utils.c:876 : undefined
  reference to

  av_packet_make_refcounted'
 /usr/local/lib//libavformat.a(codec2.o): In function
 

  codec2_read_header_common’ :
  /home/ievdokimov/repos/FFmpeg/libavformat/codec2.c:74 : undefined
  reference to

  avpriv_codec2_mode_bit_rate'
 /home/ievdokimov/repos/FFmpeg/libavformat/codec2.c:75: undefined
 reference to

  avpriv_codec2_mode_frame_size’
  /home/ievdokimov/repos/FFmpeg/libavformat/codec2.c:76 : undefined
  reference to

  avpriv_codec2_mode_block_align'
 /home/ievdokimov/repos/FFmpeg/libavformat/codec2.c:74: undefined
 reference to

  avpriv_codec2_mode_bit_rate’
  /home/ievdokimov/repos/FFmpeg/libavformat/codec2.c:75 : undefined
  reference to

  avpriv_codec2_mode_frame_size'
 /home/ievdokimov/repos/FFmpeg/libavformat/codec2.c:76: undefined
 reference to

  avpriv_codec2_mode_block_align’
  /usr/local/lib//libavformat.a(isom.o) : In function

  ff_mp4_read_dec_config_descr':
 /home/ievdokimov/repos/FFmpeg/libavformat/isom.c:552: undefined
 reference to

  avpriv_mpeg4audio_get_config2’
  /usr/local/lib//libavformat.a(latmenc.o) : In function

  latm_decode_extradata':
 /home/ievdokimov/repos/FFmpeg/libavformat/latmenc.c:65: undefined
 reference to

  avpriv_mpeg4audio_get_config2’
  /home/ievdokimov/repos/FFmpeg/libavformat/latmenc.c:65 : undefined
  reference to

  avpriv_mpeg4audio_get_config2'
 /usr/local/lib//libavformat.a(matroskadec.o): In function
 

  matroska_decode_buffer’ :
  /home/ievdokimov/repos/FFmpeg/libavformat/matroskadec.c:1657 :
  undefined reference to

  BZ2_bzDecompressInit'
 /home/ievdokimov/repos/FFmpeg/libavformat/matroskadec.c:1672:
 undefined reference to

  BZ2_bzDecompress’
  /home/ievdokimov/repos/FFmpeg/libavformat/matroskadec.c:1665 :
  undefined reference to

  BZ2_bzDecompressEnd'
 /home/ievdokimov/repos/FFmpeg/libavformat/matroskadec.c:1675:
 undefined reference to

  BZ2_bzDecompressEnd’
  /usr/local/lib//libavformat.a(mxfenc.o) : In function

  get_ue_golomb_31':
 /home/ievdokimov/repos/FFmpeg/./libavcodec/golomb.h:140: undefined
 reference to

  ff_ue_golomb_vlc_code’
  /usr/local/lib//libavformat.a(mxfenc.o) : In function

  mxf_parse_dnxhd_frame':
 /home/ievdokimov/repos/FFmpeg/libavformat/mxfenc.c:2030: undefined
 reference to

  avpriv_dnxhd_get_hr_frame_size’
  /usr/local/lib//libavformat.a(rtpenc_vc2hq.o) : In function

  init_get_bits_xe':
 /home/ievdokimov/repos/FFmpeg/./libavcodec/get_bits.h:628: undefined
 reference to

  ff_interleaved_golomb_vlc_len’
  /usr/local/lib//libavformat.a(rtpenc_vc2hq.o) : In function

  get_interleaved_ue_golomb':
 /home/ievdokimov/repos/FFmpeg/./libavcodec/golomb.h:197: undefined
 reference to

  ff_interleaved_dirac_golomb_vlc_code’
  /home/ievdokimov/repos/FFmpeg/./libavcodec/golomb.h:185 : undefined
  reference to

  ff_interleaved_dirac_golomb_vlc_code'
 /home/ievdokimov/repos/FFmpeg/./libavcodec/golomb.h:197: undefined
 reference to

  ff_interleaved_dirac_golomb_vlc_code’
  /home/ievdokimov/repos/FFmpeg/./libavcodec/golomb.h:197 : undefined
  reference to

  ff_interleaved_dirac_golomb_vlc_code'
 /home/ievdokimov/repos/FFmpeg/./libavcodec/golomb.h:185: undefined
 reference to

  ff_interleaved_dirac_golomb_vlc_code’
  /usr/local/lib//libavformat.a(rtpenc_vc2hq.o) :/home/ievdokimov/repos/FFmpeg/./libavcodec/golomb.h:185 :
  more undefined references to

  ff_interleaved_dirac_golomb_vlc_code'
 follow /usr/local/lib//libavformat.a(rtpenc_vc2hq.o): In function
 

  get_interleaved_ue_golomb’ :
  /home/ievdokimov/repos/FFmpeg/./libavcodec/golomb.h:183 : undefined
  reference to

  ff_interleaved_ue_golomb_vlc_code'
 /home/ievdokimov/repos/FFmpeg/./libavcodec/golomb.h:183: undefined
 reference to

  ff_interleaved_ue_golomb_vlc_code’
  /home/ievdokimov/repos/FFmpeg/./libavcodec/golomb.h:183 : undefined
  reference to

  ff_interleaved_ue_golomb_vlc_code'
 /usr/local/lib//libavformat.a(spdifdec.o): In function
 

  spdif_get_offset_and_codec’ :
  /home/ievdokimov/repos/FFmpeg/libavformat/spdifdec.c:63 : undefined
  reference to

  av_adts_header_parse'
 /home/ievdokimov/repos/FFmpeg/libavformat/spdifdec.c:63: undefined
 reference to

  av_adts_header_parse’
  /usr/local/lib//libavformat.a(spdifenc.o) : In function

  spdif_header_aac':
 /home/ievdokimov/repos/FFmpeg/libavformat/spdifenc.c:362: undefined
 reference to

  av_adts_header_parse’
  /usr/local/lib//libavformat.a(ac3dec.o) : In function

  ac3_eac3_probe':
 /home/ievdokimov/repos/FFmpeg/libavformat/ac3dec.c:63: undefined
 reference to

  av_ac3_parse_header’
  /home/ievdokimov/repos/FFmpeg/libavformat/ac3dec.c:60 : undefined
  reference to

  av_ac3_parse_header'
 /usr/local/lib//libavformat.a(adtsenc.o): In function
 

  adts_decode_extradata’ :
  /home/ievdokimov/repos/FFmpeg/libavformat/adtsenc.c:56 : undefined
  reference to `avpriv_mpeg4audio_get_config2’ collect2 : error : ld
  returned 1 exit status

  Is there any way to fix that ?