build_x264_ffmpeg_ios_android

my pc: macOS 10.12
x264: x264-0.148.r2705 www.videolan.org/developers/x264.html
ffmpeg: 3.1.1 https://github.com/FFmpeg/FFmpeg

###ios builded in xcode7, run in xcode7 and xcode8
arm64 x86_64 armv7 armv7s

1. gas-preprocessor.pl copy gas-preprocessor.pl to /usr/local/bin, config permission
   gas-preprocessor.pl was download from https://github.com/yuvi/gas-preprocessor

   sudo cp -f gas-preprocessor.pl /usr/local/bin/
   chmod +x /usr/bin/gas-preprocessor.pl

2. build-ios-x264.sh set SOURCE:x264 path, FAT: fat lib output path, THIN: libs outputpath
   chmod +x build-ios-x264.sh ./build-ios-x264.sh

3. build-ios-ffmpeg.sh set SOURCE:ffmpeg path, X264: x264 library, FAT: fat lib output path, THIN: libs output path
   chmod +x build-ios-ffmpeg.sh ./build-ios-ffmpeg.sh

###android NDK13
armeabi-v7a arm64-v8a x86_64 x86

1. edit build_android_x264.sh set NDK, PREFIX_DIR output directory, SOURCE:x264 source directory
   chmod +x build_android_x264.sh ./build_android_x264.sh

2. edit ffmpeg/configure For the output format like this libavcodec-55.so, which is accepted in Android. You need to edit ffmpeg/configure as follow:
   Find these codes:

SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
LIB_INSTALL_EXTRA_CMD='＄＄(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'

And modify into these ones:

SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
LIB_INSTALL_EXTRA_CMD='＄＄(RANLIB)"$(LIBDIR)/$(LIBNAME)"'
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
SLIB_INSTALL_LINKS='$(SLIBNAME)'

3. edit build_android_ffmpeg.sh set NDK, OUTPUT_DIR, SOURCE: ffmpeg source directory, X264_DIR: x264 include and lib
   chmod +x build_android_ffmpeg.sh ./build_android_ffmpeg.sh

###Reference https://github.com/yesimroy/build-scripts-of-ffmpeg-x264-for-android-ndk https://github.com/WritingMinds/ffmpeg-android http://writingminds.github.io/ffmpeg-android/ https://github.com/FFmpeg/FFmpeg http://vinsol.com/blog/2014/07/30/cross-compiling-ffmpeg-with-x264-for-android/