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• gcc is unable to create an executable file

  1er juin 2023, par Abhinandan Madaan

  I'm trying to compile ffmpeg cloned from ffmpeg github (with gpu support using CUDA) in my windows instance. I'm using msys2 mingw64 commandline to run the following command. The configure script is present in the root of the cloned ffmpeg codebase mentioned above.

  


  ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp --enable-nonfree --extra-cflags=-I/c/Program\ Files/NVIDIA\ GPU\ Computing\ Toolkit/CUDA/v12.1/include --extra-ldflags=-L/c/Program\ Files/NVIDIA\ GPU\ Computing\ Toolkit/CUDA/v12.1/lib/x64


  


  But I get the following error :

  


  gcc is unable to create an executable file.
If gcc is a cross-compiler, use the --enable-cross-compile option.
Only do this if you know what cross compiling means.
C compiler test failed.

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.libera.chat.
Include the log file "ffbuild/config.log" produced by configure as this will help
solve the problem.


  


  config.log file looks something like this(I have removed most of the unnecessary lines in between the logs) :

  


  # ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp --enable-nonfree --extra-cflags='-I/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/include' --extra-ldflags='-L/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/lib/x64'
ACLOCAL_PATH=/mingw64/share/aclocal:/usr/share/aclocal
ALLUSERSPROFILE='C:\ProgramData'
ALL_COMPONENTS='
    
    aac_adtstoasc_bsf
av1_frame_merge_bsf
.
.
.
.
gcc -I/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/include -c -o /tmp/ffconf.b4kwCEqD/test.o /tmp/ffconf.b4kwCEqD/test.c
gcc.exe: warning: Files/NVIDIA: linker input file unused because linking not done
gcc.exe: error: Files/NVIDIA: linker input file not found: No such file or directory
gcc.exe: warning: GPU: linker input file unused because linking not done
gcc.exe: error: GPU: linker input file not found: No such file or directory
gcc.exe: warning: Computing: linker input file unused because linking not done
gcc.exe: error: Computing: linker input file not found: No such file or directory
gcc.exe: warning: Toolkit/CUDA/v12.1/include: linker input file unused because linking not done
gcc.exe: error: Toolkit/CUDA/v12.1/include: linker input file not found: No such file or directory
C compiler test failed.


  


  It looks like it is unable to recognise the directory names with spaces included. I've tried escaping using \ as well as with double quotes and single quotes too. I've tried the following commands, but the result is the same :

  


  ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp --enable-nonfree --extra-cflags=-I /c/"Program Files"/"NVIDIA GPU Computing Toolkit"/CUDA/v12.1/include --extra-ldflags=-L /c/"Program Files"/"NVIDIA GPU Computing Toolkit"/CUDA/v12.1/lib/x64


  


  ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp --enable-nonfree --extra-cflags="-I/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/include" --extra-ldflags="-L/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/lib/x64"


  


  ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp --enable-nonfree --extra-cflags="-I'/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/include'" --extra-ldflags="-L'/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/lib/x64'"


  


  ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp --enable-nonfree --extra-cflags=-I/c/Program\ Files/NVIDIA\ GPU\ Computing\ Toolkit/CUDA/v12.1/include --extra-ldflags=-L/c/Program\ Files/NVIDIA\ GPU\ Computing\ Toolkit/CUDA/v12.1/lib/x64


  


• configure : Add -lstdc++ to the requirements for linking with libgme.

  7 août 2013, par Stephen Hutchinson

  configure : Add -lstdc++ to the requirements for linking with libgme.
  Needed for cross-compiling with MinGW-w64
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] configure

• Reading JPEG in ffmpeg

  16 juillet 2021, par Paul Lammertsma

  I'm trying to get ffmpeg to encode several individual JPEG images into a video on Android. I've successfully built it for Android (see the configuration string at the end of this post).

  



  I can encode an h.263+ video with randomly generated frame content, and ffmpeg otherwise appears to work well.

  



  A similar question suggests that the following code should be sufficient to load an image into an AvFrame :

  



  // Make sure we have the codecs
av_register_all();

AVFormatContext *pFormatCtx;
int ret = av_open_input_file(&pFormatCtx, imageFileName, NULL, 0, NULL);

if (ret != 0) {
    printf("Can't open image file '%s': code %d, %s",
        imageFileName, ret, strerror(AVERROR(ret)));
}


  



  The above returns the correct absolute file path and error :

  



  


  Failed '/sdcard/DCIM/Camera/IMG083.jpg' : code -1094995529, Unknown error : 1094995529

  


  



  Incidentally, if I omit av_register_all(), it returns with error 2.

  



  I've compiled ffmpeg with the following arguments :

  



  


  


  ./configure —target-os=linux 
 —prefix=$PREFIX 
 —enable-cross-compile 
 —extra-libs="-lgcc" 
 —arch=arm 
 —cc=$PREBUILT/bin/arm-linux-androideabi-gcc 
 —cross-prefix=$PREBUILT/bin/arm-linux-androideabi- 
 —nm=$PREBUILT/bin/arm-linux-androideabi-nm 
 —sysroot=$PLATFORM 
 —extra-cflags=" -O3 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums -fno-strict-aliasing -finline-limit=300 $OPTIMIZE_CFLAGS " 
 —enable-shared 
 —enable-static 
 —extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog" 
 —disable-everything 
 —enable-demuxer=mov 
 —enable-demuxer=h264 
 —disable-ffplay 
 —enable-protocol=file 
 —enable-avformat 
 —enable-avcodec 
 —enable-decoder=mjpeg 
 —enable-decoder=png 
 —enable-parser=h264 
 —enable-encoder=h263 
 —enable-encoder=h263p 
 —disable-network 
 —enable-zlib 
 —disable-avfilter 
 —disable-avdevice

  


  


  



  Any suggestions would be most welcome !