FFmpeg for iOS5
Solution 1
UPDATED: Completely changed the answer to use the script that I use.
You will also need to download gas-preprocessor.pl
from https://github.com/yuvi/gas-preprocessor
, put it in your path and make it executable.
Then create a script (say make_for_iphone.sh
) and put this in it:
export PLATFORM="iPhoneOS"
export MIN_VERSION="4.0"
export MAX_VERSION="5.0"
export DEVROOT=/Developer/Platforms/${PLATFORM}.platform/Developer
export SDKROOT=$DEVROOT/SDKs/${PLATFORM}${MAX_VERSION}.sdk
export CC=$DEVROOT/usr/bin/llvm-gcc
export LD=$DEVROOT/usr/bin/ld
export CPP=$DEVROOT/usr/bin/cpp
export CXX=$DEVROOT/usr/bin/llvm-g++
export AR=$DEVROOT/usr/bin/ar
export LIBTOOL=$DEVROOT/usr/bin/libtool
export NM=$DEVROOT/usr/bin/nm
export CXXCPP=$DEVROOT/usr/bin/cpp
export RANLIB=$DEVROOT/usr/bin/ranlib
COMMONFLAGS="-pipe -gdwarf-2 -no-cpp-precomp -isysroot ${SDKROOT} -marm -fPIC"
export LDFLAGS="${COMMONFLAGS} -fPIC"
export CFLAGS="${COMMONFLAGS} -fvisibility=hidden"
export CXXFLAGS="${COMMONFLAGS} -fvisibility=hidden -fvisibility-inlines-hidden"
FFMPEG_LIBS="libavcodec libavdevice libavformat libavutil libswscale"
echo "Building armv6..."
make clean
./configure \
--cpu=arm1176jzf-s \
--extra-cflags='-arch armv6 -miphoneos-version-min=${MIN_VERSION} -mthumb' \
--extra-ldflags='-arch armv6 -miphoneos-version-min=${MIN_VERSION}' \
--enable-cross-compile \
--arch=arm \
--target-os=darwin \
--cc=${CC} \
--sysroot=${SDKROOT} \
--prefix=installed \
--disable-network \
--disable-decoders \
--disable-muxers \
--disable-demuxers \
--disable-devices \
--disable-parsers \
--disable-encoders \
--disable-protocols \
--disable-filters \
--disable-bsfs \
--enable-decoder=h264 \
--enable-decoder=svq3 \
--enable-gpl \
--enable-pic \
--disable-doc
perl -pi -e 's/HAVE_INLINE_ASM 1/HAVE_INLINE_ASM 0/' config.h
make -j3
mkdir -p build.armv6
for i in ${FFMPEG_LIBS}; do cp ./$i/$i.a ./build.armv6/; done
echo "Building armv7..."
make clean
./configure \
--cpu=cortex-a8 \
--extra-cflags='-arch armv7 -miphoneos-version-min=${MIN_VERSION} -mthumb' \
--extra-ldflags='-arch armv7 -miphoneos-version-min=${MIN_VERSION}' \
--enable-cross-compile \
--arch=arm \
--target-os=darwin \
--cc=${CC} \
--sysroot=${SDKROOT} \
--prefix=installed \
--disable-network \
--disable-decoders \
--disable-muxers \
--disable-demuxers \
--disable-devices \
--disable-parsers \
--disable-encoders \
--disable-protocols \
--disable-filters \
--disable-bsfs \
--enable-decoder=h264 \
--enable-decoder=svq3 \
--enable-gpl \
--enable-pic \
--disable-doc
perl -pi -e 's/HAVE_INLINE_ASM 1/HAVE_INLINE_ASM 0/' config.h
make -j3
mkdir -p build.armv7
for i in ${FFMPEG_LIBS}; do cp ./$i/$i.a ./build.armv7/; done
mkdir -p build.universal
for i in ${FFMPEG_LIBS}; do lipo -create ./build.armv7/$i.a ./build.armv6/$i.a -output ./build.universal/$i.a; done
for i in ${FFMPEG_LIBS}; do cp ./build.universal/$i.a ./$i/$i.a; done
make install
This compiles both armv6 and armv7 versions and puts them into a fat library using lipo
. It installs to a folder underneath where you run the script from called installed
.
Note that at the moment I've had to turn off inline assembly using a perl
inline replace to change HAVE_INLINE_ASM
from 1
to 0
. This is because of this problem with gas-preprocessor.pl
- https://github.com/yuvi/gas-preprocessor/issues/16.
Also note that this has turned off all encoders, decoders, muxers, demuxers, etc except for the H264 decoder. Just change the configure lines to compile what you want for your use case.
Please remember also that this has enabled GPL code - so you should be aware about what that means for iPhone apps. If you're not aware then you should do some reading about that.
Solution 2
Here is my working Configure for cross-compiling FFmpeg
on iOS 6 the arch is ARMv7
NOTE: You must have to have gas-preprocessor.pl inside /usr/local/bin/
please do not continue until you have gas-preprocessor.pl on your bin directory
Download FFmpeg 1.0 "Angel" from here
Unzip it and place it somewhere i.e. your
Desktop
folderOpen terminal and browse to
unzipped FFmpeg folder
Copy and paste the following command, (be patient will take a while)
./configure --disable-doc --disable-ffmpeg --disable-ffplay --disable-ffserver --enable-cross-compile --arch=arm --target-os=darwin --cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc --as='gas-preprocessor/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk --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' --enable-pic --enable-decoder=rawvideo --disable-asm
Now type the following command on terminal
make
(wait a little more)Once it has finished now type on terminal
sudo make install
(wait again)Go to
/usr/local/lib
to find your freshly bakedarmv7
libsEnjoy!
Alex
Solution 3
I've created an "ffmpeg4ios" project at https://github.com/ciphor/ffmpeg4ios, which is successfully compiled on iOS 5.0. You can check it.
brad_roush
Updated on June 08, 2020Comments
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brad_roush about 4 years
Has anyone been able to compile ffmpeg libraries using the iOS5 sdk? I have found scripts that use the 4.3 sdk but nothing for iOS5. I would assume that libraries built with the old sdk and armv7 will still be compatible for iOS 5.
Here is the command I am trying to use:
./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/iPhoneOS5.0.sdk \ --extra-ldflags=-L/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.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
I have also tried using a script like this one:
#!/bin/tcsh -f if (! -d armv7) mkdir armv7 if (! -d lib) mkdir lib rm armv7/*.a make clean ./configure --disable-doc --disable-ffmpeg --disable-ffplay --disable-ffserver --enable-cross-compile --arch=arm --target-os=darwin --cc=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc --as='gas-preprocessor/gas-preprocessor.pl /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' --sysroot=/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk --cpu=cortex-a8 --extra-cflags='-arch armv7' --extra-ldflags='-arch armv7' --enable-pic make mv libavcodec/libavcodec.a armv7/ mv libavdevice/libavdevice.a armv7/ mv libavformat/libavformat.a armv7/ mv libavutil/libavutil.a armv7/ mv libswscale/libswscale.a armv7/ rm lib/*.a cp armv7/*.a lib/
I have also tried to switch to the gcc-4.2 as well as the llvm-gcc-4.2. However I get an "Unknown option" error shown below in the comments.
Any info will be great and thanks.
-
brad_roush over 12 yearserror:Unknown option "--cc=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/llvm-gcc".
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brad_roush over 12 yearsWhen I run the script I get: make: *** No rule to make target `clean'. Stop. ./configure: Command not found. make: *** No targets specified and no makefile found. Stop.
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AndyDunn about 12 yearsMatt, I've compiled ffmpeg using your script and it works great. However, when dragging the .a files into Xcode and compiling I'm getting 'Undefined symbols for architecture armv7: "_avcodec_init", referenced from:....' Any thoughts ?
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mattjgalloway about 12 yearsSounds like it's not got the armv7 part. Any errors when you compile?
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marchinram over 11 yearsdon't you need the file protocol enabled?
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Hyndrix over 11 yearsThanks! Worked like a charm. I only had to install pkg-config before running ./configure.