在Mac 10.8上安装ffmpeg ios库armv7，armv7s，i386和Universal

Question

如何在带有10.8的Mac上安装最新的ffmpeg ios库armv7，armv7s，i386和Universal？

Answer 1

After a couple of days I have made step by step instructions for this install:

FFmpeg Build Instructions MAC 10.8 or better

Copy ffmpeg-2.0.tar.bz2 ( https://ffmpeg.org/releases/ffmpeg-1.0.7.tar.bz2 , https://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 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 xx)

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 ../..

Answer 2

Support universal ffmpeg library for iOS7 and XCode5:

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.

Download my shell script from: https://gist.github.com/m1entus/6983547

1. Run sh build-ffmpeg.sh .

Answer 3

I needed arm64 support and this script worked for me: https://github.com/kewlbear/FFmpeg-iOS-build-script

Use

./build-ffmpeg.sh arm64 x86_64

for iOS 64-bit and simulator architecture. Then copy the contents in the "fat" directory into your Xcode project.

The only modification I made to the script was uncommenting this line:

CONFIGURE_FLAGS="$CONFIGURE_FLAGS --enable-avresample"

to compile the libavresample library.

Edit: It's not working with armv7 and armv7s however, using iOS 7.1 SDK. If I find a solution I'll post here.

Answer 4

For building ffmpeg iOS libraries you can use this little scripts .

1. Download ffmpeg source
2. Download https://github.com/wang-bin/build_ffmpeg
3. Open terminal and run export FFSRC=/path/to/ffmpeg
4. Goto build_ffmpeg folder and run: ./ios.sh
5. After successful building, result will be in sdk-ios folder
6. Add include folder and lib folder in your Xcode project