iPhone SDK 4.3 libav编译问题

Question

我遇到了奇怪的问题。我安装了iPhone SDK 4.3和xCode 4，现在我无法从ffmpeg为ARMv6架构编译libav。这是我编译它的脚本（适用于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   

因此我得到了库文件但是当我用lipo -info命令检查它时，它显示该库是为i386架构编译的。

也许有人遇到过这样的问题？请帮帮我。

感谢。

Answer 1

更新帖子

这是一个更新的脚本，它删除了armv6，添加了armv7s，使用了iOS 6.0 SDK，并修复了lipo工具更改的问题。确保您拥有gas-preprocessor.pl中/usr/local/bin的最新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 ：

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

原帖

这将为armv6，armv7和i386架构构建ffmpeg静态库，并将它们组合成iOS 4.3（iPhoneOS4.3和iPhoneSimulator4.3）的胖（通用）文件：

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