iPhone SDK 4.3 libav compiling problem

Question

I faced with strange problem. I installed iPhone SDK 4.3 and xCode 4 and now I can't compile libav from ffmpeg for ARMv6 architecture. This is my script to compile it (it works fine for iPhone SDK 4.2):

./configure \
--disable-doc --disable-ffmpeg --disable-ffplay --disable-ffserver --enable-cross-compile \
--enable-encoder=rawvideo \
--enable-decoder=h264 \
--enable-decoder=mpeg4 \
--enable-encoder=mjpeg \
--enable-muxer=rawvideo \
--enable-demuxer=h264 \
--enable-parser=h264 \
--enable-cross-compile \
--arch=c \
--target-os=darwin \
--enable-libopencore-amrnb --enable-libopencore-amrwb \
--cc=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/arm-apple-darwin10-gcc-4.2.1 \
--as='gas-preprocessor/gas-preprocessor.pl /Developer/Platforms/iPhoneOS.platform/Developer    /usr/bin/arm-apple-darwin10-gcc-4.2.1' \
--sysroot=/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk \
--cpu=arm1176jzf-s --extra-cflags='-arch armv6' --extra-ldflags='-arch armv6'

make clean
make

as a result I get library files but when I check it with lipo -info command it shows that library was compiled for i386 architecture.

Maybe somebody faced with such problem? Help me please.

Thanks.

Somebody faced with problem of compiling of ffmpeg under iOS SDK 4.3? — VictorT, Apr 08 '11 at 13:51

Anton · Accepted Answer · 2013-01-17T02:44:34.987

Updated Post

Here is an updated script that removes armv6, adds armv7s, uses the iOS 6.0 SDK, and fixes issues with changes to the lipo tool. Make sure you have the latest gas-preprocessor.pl from github in /usr/local/bin:

rm -r ./compiled

# configure for armv7 build
./configure \
--cc=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \
--as='gas-preprocessor.pl /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' \
--sysroot=/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk \
--extra-ldflags=-L/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk/usr/lib/system \
--target-os=darwin \
--arch=arm \
--cpu=cortex-a8 \
--extra-cflags='-arch armv7' \
--extra-ldflags='-arch armv7' \
--extra-cflags='-mfpu=neon -mfloat-abi=softfp -mvectorize-with-neon-quad' \
--prefix=compiled/armv7 \
--enable-pic \
--enable-neon \
--enable-cross-compile \
--enable-optimizations \
--disable-debug \
--disable-armv5te \
--disable-armv6 \
--disable-armv6t2 \
--disable-armvfp \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffserver \
--disable-ffprobe \
--disable-doc

# build for armv7
make clean
make && make install

# configure for armv7s build
./configure \
--cc=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \
--as='gas-preprocessor.pl /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' \
--sysroot=/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk \
--extra-ldflags=-L/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk/usr/lib/system \
--target-os=darwin \
--arch=arm \
--cpu=cortex-a8 \
--extra-cflags='-arch armv7s' \
--extra-ldflags='-arch armv7s' \
--extra-cflags='-mfpu=neon -mfloat-abi=softfp -mvectorize-with-neon-quad' \
--prefix=compiled/armv7s \
--enable-pic \
--enable-neon \
--enable-cross-compile \
--enable-optimizations \
--disable-debug \
--disable-armv5te \
--disable-armv6 \
--disable-armv6t2 \
--disable-armvfp \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffserver \
--disable-ffprobe \
--disable-doc

# build for armv7s
make clean
make && make install

# configure for i386 build
./configure \
--cc=/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc \
--as='gas-preprocessor.pl /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc' \
--sysroot=/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk \
--extra-ldflags=-L/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/usr/lib/system \
--target-os=darwin \
--arch=i386 \
--cpu=i386 \
--extra-cflags='-arch i386' \
--extra-ldflags='-arch i386' \
--prefix=compiled/i386 \
--enable-cross-compile \
--disable-mmx \
--disable-armv5te \
--disable-armv6 \
--disable-armv6t2 \
--disable-armvfp \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffserver \
--disable-ffprobe \
--disable-doc

# build for i386
make clean
make && make install

# make fat (universal) libs
mkdir -p ./compiled/fat/lib

lipo -output ./compiled/fat/lib/libavcodec.a  -create \
./compiled/armv7s/lib/libavcodec.a \
./compiled/armv7/lib/libavcodec.a \
./compiled/i386/lib/libavcodec.a

lipo -output ./compiled/fat/lib/libavdevice.a  -create \
./compiled/armv7s/lib/libavdevice.a \
./compiled/armv7/lib/libavdevice.a \
./compiled/i386/lib/libavdevice.a

lipo -output ./compiled/fat/lib/libavfilter.a  -create \
./compiled/armv7s/lib/libavfilter.a \
./compiled/armv7/lib/libavfilter.a \
./compiled/i386/lib/libavfilter.a

lipo -output ./compiled/fat/lib/libavformat.a  -create \
./compiled/armv7s/lib/libavformat.a \
./compiled/armv7/lib/libavformat.a \
./compiled/i386/lib/libavformat.a

lipo -output ./compiled/fat/lib/libavutil.a  -create \
./compiled/armv7s/lib/libavutil.a \
./compiled/armv7/lib/libavutil.a \
./compiled/i386/lib/libavutil.a

lipo -output ./compiled/fat/lib/libswresample.a  -create \
./compiled/armv7s/lib/libswresample.a \
./compiled/armv7/lib/libswresample.a \
./compiled/i386/lib/libswresample.a

lipo -output ./compiled/fat/lib/libswscale.a  -create \
./compiled/armv7s/lib/libswscale.a \
./compiled/armv7/lib/libswscale.a \
./compiled/i386/lib/libswscale.a

Original Post

This will build ffmpeg static libraries for armv6, armv7, and i386 architectures and combine them into fat (universal) files for iOS 4.3 (iPhoneOS4.3 and iPhoneSimulator4.3):

rm -r ./compiled

# configure for armv7 build
./configure \
--cc=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \
--as='gas-preprocessor.pl /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' \
--sysroot=/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk \
--extra-ldflags=-L/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk/usr/lib/system \
--target-os=darwin \
--arch=arm \
--cpu=cortex-a8 \
--extra-cflags='-arch armv7' \
--extra-ldflags='-arch armv7' \
--prefix=compiled/armv7 \
--enable-pic \
--enable-cross-compile \
--disable-armv5te \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffserver \
--disable-ffprobe \
--disable-doc

# build for armv7
make clean
make && make install

# configure for armv6 build
./configure \
--cc=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \
--as='gas-preprocessor.pl /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' \
--sysroot=/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk \
--extra-ldflags=-L/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk/usr/lib/system \
--target-os=darwin \
--arch=arm \
--cpu=arm1176jzf-s \
--extra-cflags='-arch armv6' \
--extra-ldflags='-arch armv6' \
--prefix=compiled/armv6 \
--enable-cross-compile \
--disable-armv5te \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffserver \
--disable-ffprobe \
--disable-doc

# build for armv6
make clean
make && make install

# configure for i386 build
./configure \
--cc=/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc \
--as='gas-preprocessor.pl /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc' \
--sysroot=/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.3.sdk \
--extra-ldflags=-L/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.3.sdk/usr/lib/system \
--target-os=darwin \
--arch=i386 \
--cpu=i386 \
--extra-cflags='-arch i386' \
--extra-ldflags='-arch i386' \
--prefix=compiled/i386 \
--enable-cross-compile \
--disable-armv5te \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffserver \
--disable-ffprobe \
--disable-doc

# build for i386
make clean
make && make install

# make fat (universal) libs
mkdir -p ./compiled/fat/lib

lipo -output ./compiled/fat/lib/libavcodec.a  -create \
-arch armv6 ./compiled/armv6/lib/libavcodec.a \
-arch armv7 ./compiled/armv7/lib/libavcodec.a \
-arch i386 ./compiled/i386/lib/libavcodec.a

lipo -output ./compiled/fat/lib/libavdevice.a  -create \
-arch armv6 ./compiled/armv6/lib/libavdevice.a \
-arch armv7 ./compiled/armv7/lib/libavdevice.a \
-arch i386 ./compiled/i386/lib/libavdevice.a

lipo -output ./compiled/fat/lib/libavfilter.a  -create \
-arch armv6 ./compiled/armv6/lib/libavfilter.a \
-arch armv7 ./compiled/armv7/lib/libavfilter.a \
-arch i386 ./compiled/i386/lib/libavfilter.a

lipo -output ./compiled/fat/lib/libavformat.a  -create \
-arch armv6 ./compiled/armv6/lib/libavformat.a \
-arch armv7 ./compiled/armv7/lib/libavformat.a \
-arch i386 ./compiled/i386/lib/libavformat.a

lipo -output ./compiled/fat/lib/libavutil.a  -create \
-arch armv6 ./compiled/armv6/lib/libavutil.a \
-arch armv7 ./compiled/armv7/lib/libavutil.a \
-arch i386 ./compiled/i386/lib/libavutil.a

lipo -output ./compiled/fat/lib/libpostproc.a  -create \
-arch armv6 ./compiled/armv6/lib/libpostproc.a \
-arch armv7 ./compiled/armv7/lib/libpostproc.a \
-arch i386 ./compiled/i386/lib/libpostproc.a

lipo -output ./compiled/fat/lib/libswscale.a  -create \
-arch armv6 ./compiled/armv6/lib/libswscale.a \
-arch armv7 ./compiled/armv7/lib/libswscale.a \
-arch i386 ./compiled/i386/lib/libswscale.a

Before running the script, you may also want to delete inverse.c from ./libavcodec and remove the reference to inverse.o from ./libavcodec/makefile as inverse.o is compiled into libavutil and will result in a conflict when you include both libs in your project. — Anton, May 20 '11 at 21:23
@Anton should this work by just : 1. cloning git repo from ffmpeg.org 2. making new build file `build_new` and pasting the above code 3. running ./build_new because i'm experiencing some problems. — Robin Rye, Aug 09 '11 at 13:28
@Anton I'm not getting any *.a files in the /build/armv6/ and /build/armv7/. only in the i386 i get the files so the lipo fail, and therefor it doesn't work. — Robin Rye, Aug 09 '11 at 13:43
@Robin, I just updated with the latest copy of my build script. Try it again. — Anton, Aug 09 '11 at 13:45
@Anton it's still the same :/ dunno why since i just got a fresh clone from the repository and pasted code and changed chmod +x on the file. now i don't even get subfolders for the other archs (just /fat/ and /i386/) in /compiled/. i'll put the output in a file and post it if you would like to take a look. — Robin Rye, Aug 09 '11 at 15:23
@Anton , just brainstorming a bit here, but should it really be make clean between the different make & make install? — Robin Rye, Aug 11 '11 at 07:52
@RobinRye, it doesn't hurt. I like to make sure that if anything fails, it fails loud. — Anton, Sep 20 '11 at 22:23

iPhone SDK 4.3 libav compiling problem

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