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• Mingw-w64 - printf does not work

  27 décembre 2013, par Gosha U.

  First I wanted to modificate ffplay according to my requirments. Then I noticed that original ffplay from my build can't play some video files, but it didn't write any message to console. Then I noticed that ffmpeg also don't write any usage message when I run it without params. But it works. If I run it from terminal it's like running asynchronously ! The terminal just shows next row. I mean it asks for a next command. But the ffmpeg process is visible in task manager and it writes the output video file what I had requested !

  I created following souce file. I have modified the Makefile. So it have built the exe-file works just the same way. I have no idea how it can be.

  #include 
  
  #include "cmdutils.h"
  
  
  
  const char program_name[] = "hello";
  
  const int program_birth_year = 2013;
  
  
  
  void show_help_default(const char *opt, const char *arg)
  
  {
  
      printf("zxcvbnm\n");
  
  }
  
  
  
  int main(int argc, char **argv)
  
  {
  
      printf("1234567890\n");
  
      return 0;
  
  }

  And after that I created real hello world app with MinGW-w64 and qmake without eny extra libs. And its printf does not work.

  I want to prevent this behavior.

  I want to make printf working in traditional manner.

  How I build FFmpeg :

  PKG_CONFIG_PATH=/home/developer/workspace/MinGW32fs/lib/pkgconfig/ \
  
  SDL_CONFIG=/home/developer/workspace/MinGW32fs/bin/sdl-config \
  
  ./configure \
  
    --prefix=/home/developer/workspace/MinGW32fs \
  
    --extra-ldflags="-L/home/developer/workspace/MinGW32fs/lib" \
  
    --extra-cflags="-I/home/developer/workspace/MinGW32fs/include" \
  
    --arch=x86 --target-os=mingw32 --cross-prefix=i686-w64-mingw32-  \
  
    --pkg-config=pkg-config   --enable-libtheora --enable-libvorbis --enable-libvpx \
  
    --enable-outdev=sdl --enable-shared --disable-static \
  
    --disable-doc --disable-manpages --disable-podpages
  
  
  
  make

• FFmpeg make : *** [libavdevice/avfoundation.o] Error 1

  29 décembre 2014, par Althen Lim Zi Xuan

  I’m very new (1 weeks ago) to Mac OS environment and I have to create a iPhone apps using FFmpeg (I’m new to this, too !). This is what I’ve done to import FFmpeg library.

  First, here’s the environment :

  OS: Mac OS X 10.7.5
  
  Xcode: 4.5
  
  FFmpeg: 2.5 (Latest update of 04/12/2014)

  So I download from FFmpeg.org using command :

  git clone git://source.ffmpeg.org/ffmpeg.git ~/ffmpeg

  and create the folder in it :

  cd ffmpeg
  
  mkdir i386
  
  mkdir armv7
  
  mkdir armv7s
  
  mkdir -p universal/lib

  I download the gas-preprocessor.pl from yuvi and copied into /usr/bin and /usr/local/bin with READ/WRITE access for all.

  However, I do encounter the error as title mentions during the making process of armv7 and armv7s which appear like this :

  make: *** [libavdevice/avfoundation.o] Error 1

  Can anyone teach me how to deal with it ? Here’s my configuration.

  For i386 : (Compilation success and I saw files and folder in i386 folder)

  ./configure --cc="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc" --as="/usr/local/bin/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/bin/arm-apple-darwin10-llvm-gcc-4.2" --sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk" --target-os=darwin --arch=i386 --cpu=i386 --extra-cflags="-arch i386" --extra-ldflags="-arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk"--prefix=compiled/i386 --enable-cross-compile --enable-nonfree --enable-gpl --disable-armv5te --disable-swscale-alpha --disable-doc --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-asm --disable-debug

  For armv7 :

  ./configure --cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc --as="/usr/local/bin/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/bin/arm-apple-darwin10-llvm-gcc-4.2" --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk --target-os=darwin --arch=arm --cpu=cortex-a8 --extra-cflags="-arch armv7" --extra-ldflags="-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk" --prefix=compiled/armv7 --enable-cross-compile --enable-nonfree --enable-gpl --disable-armv5te --disable-swscale-alpha --disable-doc --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-asm --disable-debug

  and for armv7s :

  ./configure --prefix=armv7s --as="/usr/local/bin/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/bin/arm-apple-darwin10-llvm-gcc-4.2" --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --enable-avresample --enable-cross-compile --sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk" --target-os=darwin --cc="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc" --extra-cflags="-arch armv7s -mfpu=neon -miphoneos-version-min=6.0" --extra-ldflags="-arch armv7s -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk -miphoneos-version-min=6.0" --arch=arm --cpu=cortex-a9 --enable-pic

  If any necessary information needed please do inform me and I will upload it A.S.A.P. Any help, comment, guideline are highly appreciated. Thanks !

  Updated :
  This is the error I received during the making process. I have no idea but hope that it helps in configuring out problem :

  CC  libavdevice/alldevices.o
  
  CC  libavdevice/avdevice.o
  
  CC  libavdevice/avfoundation.o
  
  libavdevice/avfoundation.m:44: error: initializer element is not constant
  
  libavdevice/avfoundation.m:44: error: (near initialization for ‘avf_time_base_q.den’)
  
  libavdevice/avfoundation.m:74:5: warning: "__MAC_OS_X_VERSION_MIN_REQUIRED" is not defined
  
  libavdevice/avfoundation.m: In function ‘add_video_device’:
  
  libavdevice/avfoundation.m:300: warning: ISO C90 forbids mixed declarations and code
  
  libavdevice/avfoundation.m:355: warning: ISO C90 forbids mixed declarations and code
  
  libavdevice/avfoundation.m:364: warning: ISO C90 forbids mixed declarations and code
  
  libavdevice/avfoundation.m: In function ‘add_audio_device’:
  
  libavdevice/avfoundation.m:407: warning: ISO C90 forbids mixed declarations and code
  
  libavdevice/avfoundation.m: In function ‘get_video_config’:
  
  libavdevice/avfoundation.m:432: warning: ISO C90 forbids mixed declarations and code
  
  libavdevice/avfoundation.m:442: warning: ISO C90 forbids mixed declarations and code
  
  libavdevice/avfoundation.m: In function ‘get_audio_config’:
  
  libavdevice/avfoundation.m:470: warning: ISO C90 forbids mixed declarations and code
  
  libavdevice/avfoundation.m:480: warning: ISO C90 forbids mixed declarations and code
  
  libavdevice/avfoundation.m: In function ‘avf_read_header’:
  
  libavdevice/avfoundation.m:534: warning: ISO C90 forbids mixed declarations and code
  
  libavdevice/avfoundation.m:539:5: warning: "__MAC_OS_X_VERSION_MIN_REQUIRED" is not defined
  
  libavdevice/avfoundation.m:546: warning: ISO C90 forbids mixed declarations and code
  
  libavdevice/avfoundation.m:554:5: warning: "__MAC_OS_X_VERSION_MIN_REQUIRED" is not defined
  
  libavdevice/avfoundation.m:575: warning: ISO C90 forbids mixed declarations and code
  
  libavdevice/avfoundation.m:596:5: warning: "__MAC_OS_X_VERSION_MIN_REQUIRED" is not defined
  
  libavdevice/avfoundation.m:619:5: warning: "__MAC_OS_X_VERSION_MIN_REQUIRED" is not defined
  
  libavdevice/avfoundation.m: In function ‘avf_read_packet’:
  
  libavdevice/avfoundation.m:724: warning: ISO C90 forbids mixed declarations and code
  
  libavdevice/avfoundation.m:739: warning: ISO C90 forbids mixed declarations and code
  
  libavdevice/avfoundation.m:776: warning: ISO C90 forbids mixed declarations and code
  
  make: *** [libavdevice/avfoundation.o] Error 1

• Error when compiling FAAC for iOS

  6 novembre 2014, par 谢小进

  I want to compile FAAC for iOS, including i386, x86_64, armv7, armv7s, arm64. I am using this shell script and when I run it, only i386 and x86_64 are built. The current code is like this :

  #!/bin/sh
  
  
  
  # OS X Mavericks, Xcode 5.1
  
  
  
  set -ex
  
  
  
  VERSION="1.28"
  
  CURRPATH=`pwd`
  
  SOURCE="faac-$VERSION"
  
  DSTDIR="libfaac"
  
  SDKVERSION="7.1"
  
  ARCHS="i386 x86_64 armv7 armv7s arm64"
  
  DEVELOPER="/Applications/Xcode.app/Contents/Developer"
  
  
  
  rm -rf $DSTDIR
  
  mkdir $DSTDIR
  
  
  
  tar jxf $SOURCE.tar.gz
  
  cd $SOURCE
  
  
  
  for ARCH in $ARCHS; do
  
      mkdir -p $CURRPATH/$DSTDIR/$ARCH
  
  
  
      if [ $ARCH == "i386" -o $ARCH == "x86_64" ]; then
  
          PLATFORM="iPhoneSimulator"
  
          if [ $ARCH = "i386" ]; then
  
              HOST="--host=i386-apple-darwin"
  
          fi
  
      else
  
          PLATFORM="iPhoneOS"
  
          HOST="--host=arm-apple-darwin"
  
      fi
  
  
  
      SDK="$DEVELOPER/Platforms/$PLATFORM.platform/Developer/SDKs/$PLATFORM$SDKVERSION.sdk"
  
      IOSMV="-miphoneos-version-min=7.0"
  
      export CC="$DEVELOPER/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang"
  
      export CFLAGS="$IOSMV -arch $ARCH"
  
      export LDFLAGS="$IOSMV -arch $ARCH -isysroot $SDK"
  
      export LIBS="-L$SDK/usr/lib"
  
      export CXXFLAGS="$IOSMV -arch $ARCH -I$SDK/usr/include"
  
  
  
      ./configure \
  
      $HOST \
  
      --prefix=$CURRPATH/$DSTDIR/$ARCH
  
  
  
      make && make install && make clean
  
  done
  
  
  
  cd ..
  
  mkdir -p $DSTDIR/lib
  
  
  
  lipo -create `find $DSTDIR -name libfdk-aac.a` -output $DSTDIR/lib/libfdk-aac.a
  
  
  
  cp -rf $DSTDIR/$ARCH/include $DSTDIR
  
  
  
  for ARCH in $ARCHS; do
  
      rm -rf $DSTDIR/$ARCH
  
  done

  Can somebody tell me why armv7, armv7s, arm64 are not built correct ? If needed, where can I change them ? Maybe it could be like -host= value. but I have used -host=armv7-apple-darwin, -host=armv7s-apple-darwin, and -host=arm64-apple-darwin, it’s not correct either.