Recherche avancée

Sur d’autres sites (10801)

• arm-linux-androideabi-gcc is unable to create an executable - compile ffmpeg for android armeabi devices

  25 juillet 2013, par Chaitanya Chandurkar

  I am trying to compile ffmpeg for android armeabi devices.
  I am following tutorial by roman10.net
  His given build script builds ffmpeg for armv7-a devices. I want to build it for armeabi.
  

  My ultimate aim is to run ffmpeg commands on android armeabi and armv7-a devices.

  So i change the script's CPU part from

  #arm v7vfpv3
  
  CPU=armv7-a
  
  OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=$CPU "
  
  PREFIX=./android/$CPU
  
  ADDITIONAL_CONFIGURE_FLAG=
  
  build_one 

  to

  #arm v6
  
  CPU=armv6
  
  OPTIMIZE_CFLAGS="-marm -march=$CPU"
  
  PREFIX=./android/$CPU 
  
  ADDITIONAL_CONFIGURE_FLAG=
  
  build_one

  (I thought changing it to armv6 would build ffmpeg compatible with armeabi devices. m i wrong ?)

  Doubt 1 :
  Do i also have to change toolchain ?
  i.e from arm-linux-androideabi-4.4.3 to arm-eabi-4.4.0 ?????

  Doubt 2 :

  When i try running ./build.sh (without changing toolchain) it gives me following error :
  

  /home/chaitanya/android/android-ndk-r5b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-gcc is unable to create an executable file.
  
  C compiler test failed.
  
  
  
  If you think configure made a mistake,.. blaah blahh blaah

  after that i got lot of warnings saying :
  ‘sub_id’ is deprecated and many other function deprecated warnings.

  platform : ubuntu 11.10
  ffmpeg version : 0.11.2
  NDK : android-ndk-r5b

  Here is my build script :

  #!/bin/bash
  
  ######################################################
  
  # Usage:
  
  # put this script in top of FFmpeg source tree
  
  # ./build_android
  
  # It generates binary for following architectures:
  
  # ARMv6 
  
  # ARMv6+VFP 
  
  # ARMv7+VFM-�d16 (Tegra2) 
  
  # ARMv7+Neon (Cortex-A8)
  
  # Customizing:
  
  # 1. Feel free to change ./configure parameters for more features
  
  # 2. To adapt other ARM variants
  
  # set $CPU and $OPTIMIZE_CFLAGS 
  
  # call build_one
  
  ######################################################
  
  NDK=~/android/android-ndk-r5b
  
  PLATFORM=$NDK/platforms/android-8/arch-arm/
  
  PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86
  
  function build_one
  
  {
  
  ./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 " \
  
      --disable-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=rawvideo \
  
      --enable-decoder=mjpeg \
  
      --enable-decoder=h263 \
  
      --enable-decoder=mpeg4 \
  
      --enable-decoder=h264 \
  
      --enable-parser=h264 \
  
      --disable-network \
  
      --enable-zlib \
  
      --disable-avfilter \
  
      --disable-avdevice \
  
      $ADDITIONAL_CONFIGURE_FLAG
  
  
  
  make clean
  
  make  -j4 install
  
  $PREBUILT/bin/arm-linux-androideabi-ar d libavcodec/libavcodec.a inverse.o
  
  $PREBUILT/bin/arm-linux-androideabi-ld -rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib  -soname libffmpeg.so -shared -nostdlib  -z,noexecstack -Bsymbolic --whole-archive --no-undefined -o $PREFIX/libffmpeg.so libavcodec/libavcodec.a libavformat/libavformat.a libavutil/libavutil.a libswscale/libswscale.a -lc -lm -lz -ldl -llog  --warn-once  --dynamic-linker=/system/bin/linker $PREBUILT/lib/gcc/arm-linux-androideabi/4.4.3/libgcc.a
  
  }
  
  
  
  #arm v6
  
  CPU=armv6
  
  OPTIMIZE_CFLAGS="-marm -march=$CPU"
  
  PREFIX=./android/$CPU 
  
  ADDITIONAL_CONFIGURE_FLAG=
  
  build_one
  
  
  
  #arm v7vfpv3
  
  #CPU=armv7-a
  
  #OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=$CPU "
  
  #PREFIX=./android/$CPU
  
  #ADDITIONAL_CONFIGURE_FLAG=
  
  #build_one
  
  
  
  #arm v7vfp
  
  #CPU=armv7-a
  
  #OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU "
  
  #PREFIX=./android/$CPU-vfp
  
  #ADDITIONAL_CONFIGURE_FLAG=
  
  #build_one
  
  
  
  #arm v7n
  
  #CPU=armv7-a
  
  #OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=neon -marm -march=$CPU -mtune=cortex-a8"
  
  #PREFIX=./android/$CPU 
  
  #ADDITIONAL_CONFIGURE_FLAG=--enable-neon
  
  #build_one
  
  
  
  #arm v6+vfp
  
  #CPU=armv6
  
  #OPTIMIZE_CFLAGS="-DCMP_HAVE_VFP -mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU"
  
  #PREFIX=./android/${CPU}_vfp 
  
  #ADDITIONAL_CONFIGURE_FLAG=
  
  #build_one

  How do i tackle this problem ? what is going wrong ?

• Building ffmpeg for Windows with MSYS and MinGW

  27 février 2014, par Tech Jerk

  I am trying to build ffmpeg for windows (Xp - SP2) as given here.

  ./configure -–extra-cflags=”-mno-cygwin -mms-bitfields” -–extra-ldflags=”-Wl, -add-stdcall-alias” -–enable-memalign-hack -–enable-shared -–disable-static -–target-os=mingw32

  The above command is placed in a myconfig file as instructed and when i run ./myconfig, the following error is displayed :

  Broken Shell detected. Trying alternatives.
  
  Trying Shell bash
  
  Unknown option "-–extra-cflags=-mno-cygwin".

  As suggested in the link i tried various options but still i was not able to succeed.

  My environment is Win XP with :

  • MinGW-5.1.6,
  • bash-2.05b-MSYS,
  • MSYS-1.0.10,
  • ffmpeg-0.5

  EDIT :

  After certain changes in the above command by referring howto i was able to successfully run the make command and i found the following DLL's in their respective directory

  • ffmpeg\libavcodec\avcodec-51.dll
  • ffmpeg\libavformat\avformat-51.dll
  • ffmpeg\libavutil\avutil-49.dll

  But i didn't see any ffmpeg\ffmpeg.exe file :(

  What could have gone wrong ?

• how to create ffmpeg.so from ffmpeg.exe [closed]

  4 septembre 2012, par Naseeb Sheoran

  Possible Duplicate :
  difficulty in building ffmpeg for windows

  I am making an application using ffmpeg library.I have successfully compiled the ffmpeg library in windows and got the ffmpeg.exe , but failed to get the ffmpeg.so file.Is there some different way to compile so as to get the ffmpeg.so ? Please help me.