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  • Build FFmpeg for iOS

    FFmpeg Build Instructions MAC 10.8 or better

    Copy ffmpeg-2.0.tar.bz2 (https://ffmpeg.org/releases/ffmpeg-1.0.7.tar.bz2https://ffmpeg.org/download.html) and Unzip to Documents folder

    Make sure you have the latest Command Line Tools under Xcode >; Preferences >; Downloads >; Components

    Install gas-preprocessor

    1. Click on the ZIP icon to download https://github.com/mansr/gas-preprocessor.
    2. Copy gas-preprocessor.pl to /usr/bin directory.
    3. Change permission of gas-preprocessor.pl by setting the privilege to Read & Write for all.

    Bug in xcrun starting in version 10.8

    open terminal and paste in following command and press enter:

    export DEVELOPER_DIR="/Applications/Xcode.app/Contents/Developer/"

    cd to ffmpeg-2 folder and paste in following command and press enter:

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

    To config armv7 library paste in following command and press enter:

    ./configure --prefix=armv7 --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --enable-avresample --enable-cross-compile --sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk" --target-os=darwin --cc="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc" --extra-cflags="-arch armv7 -mfpu=neon -miphoneos-version-min=6.1" --extra-ldflags="-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk-miphoneos-version-min=6.1" --arch=arm --cpu=cortex-a9 --enable-pic

    (Note: if config fails go to Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/ and make sure that the sdk folder is iPhoneOS6.1.sdk, if not change the config command to reflect iPhoneOSx.x.sdk and change all targets to x.x)

    To build and install armv7 library paste in following command and press enter:

    make clean && make && make install

    To config armv7s library paste in following command and press enter:

    ./configure --prefix=armv7s --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --enable-avresample --enable-cross-compile --sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.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=6.1" --extra-ldflags="-arch armv7s -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk-miphoneos-version-min=6.1" --arch=arm --cpu=cortex-a9 --enable-pic

    (Note same rule as above: if config fails go to Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/ and make sure that the sdk folder is iPhoneOS6.1.sdk, if not change the config command to reflect iPhoneOSx.x.sdk and change all targets to x.x)

    To build and install armv7s library paste in following command and press enter:

    make clean && make && make install

    To config i386 (so simulator will work ) library paste in following command and press enter:

    ./configure --prefix=i386 --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --enable-avresample --enable-cross-compile --sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk" --target-os=darwin --cc="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc" --extra-cflags="-arch i386" --extra-ldflags="-arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk" --arch=i386 --cpu=i386 --enable-pic --disable-asm

    (Note: this is not the same command as the previous two config commands, if you just arrow up to them this will fail)

    To build and install i386 library paste in following command and press enter:

    make clean && make && make install

    To make universal library ( which is the library added to xcode ) paste in following command and press enter:

    cd armv7/lib
    for file in*.a
    do
    cd ../..
    xcrun -sdk iphoneos lipo -output universal/lib/$file  -create -arch armv7 armv7/lib/$file -arch armv7s armv7s/lib/$file -arch i386 i386/lib/$file
    echo "Universal $file created."
    cd -done
    cd ../..
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  • 原文地址:https://www.cnblogs.com/Proteas/p/3545655.html
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