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Android NDK Clang交叉编译FFmpeg

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echo $CC
export CXX=$TOOLCHAIN/bin/$ARCH-linux-androideabi$MIN-clang++
export LD=$TOOLCHAIN/bin/arm-linux-androideabi-ld
export NM=$TOOLCHAIN/bin/arm-linux-androideabi-nm
export RANLIB=$TOOLCHAIN/bin/arm-linux-androideabi-ranlib
export STRIP=$TOOLCHAIN/bin/arm-linux-androideabi-strip

OPTIMIZE_CFLAGS=”-DANDROID -I$NDK/sysroot/usr/include/arm-linux-androideabi/“
ADDI_LDFLAGS=”-Wl,-rpath-link=$MIN_PLATFORM/arch-arm/usr/lib -L$MIN_PLATFORM/arch-arm/usr/lib -nostdlib”

sed -i “” “s/SLIBNAME_WITH_MAJOR=’$(SLIBNAME).$(LIBMAJOR)’/SLIBNAME_WITH_MAJOR=’$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)’/“ configure
sed -i “” “s/LIB_INSTALL_EXTRA_CMD=’$$(RANLIB) "$(LIBDIR)\/$(LIBNAME)"‘/LIB_INSTALL_EXTRA_CMD=’$$(RANLIB) "$(LIBDIR)\/$(LIBNAME)"‘/“ configure
sed -i “” “s/SLIB_INSTALL_NAME=’$(SLIBNAME_WITH_VERSION)’/SLIB_INSTALL_NAME=’$(SLIBNAME_WITH_MAJOR)’/“ configure
sed -i “” “s/SLIB_INSTALL_LINKS=’$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)’/SLIB_INSTALL_LINKS=’$(SLIBNAME)’/“ configure
sed -i -e ‘s/#define getenv(x) NULL//*#define getenv(x) NULL*//g’ config.h

sed -i “” “s/SHFLAGS=’-shared -Wl,-soname,$(SLIBNAME)’/SHFLAGS=’-shared -soname $(SLIBNAME)’/“ configure

sed -i “” “s/-Wl//g” configure

./configure
–prefix=$PREFIX
–ar=$AR
–as=$AS
–cc=$CC
–cxx=$CXX
–nm=$NM
–ranlib=$RANLIB
–strip=$STRIP
–arch=$ARCH
–target-os=android
–enable-cross-compile
–disable-asm
–enable-shared
–disable-static
–disable-ffprobe
–disable-ffplay
–disable-ffmpeg
–disable-debug
–disable-symver
–disable-stripping
–extra-cflags=”-Os -fpic $OPTIMIZE_CFLAGS”
–extra-ldflags=”$ADDI_LDFLAGS”

sed -i “” “s/#define HAVE_TRUNC 0/#define HAVE_TRUNC 1/“ config.h
sed -i “” “s/#define HAVE_TRUNCF 0/#define HAVE_TRUNCF 1/“ config.h
sed -i “” “s/#define HAVE_RINT 0/#define HAVE_RINT 1/“ config.h
sed -i “” “s/#define HAVE_LRINT 0/#define HAVE_LRINT 1/“ config.h
sed -i “” “s/#define HAVE_LRINTF 0/#define HAVE_LRINTF 1/“ config.h
sed -i “” “s/#define HAVE_ROUND 0/#define HAVE_ROUND 1/“ config.h
sed -i “” “s/#define HAVE_ROUNDF 0/#define HAVE_ROUNDF 1/“ config.h
sed -i “” “s/#define HAVE_CBRT 0/#define HAVE_CBRT 1/“ config.h
sed -i “” “s/#define HAVE_CBRTF 0/#define HAVE_CBRTF 1/“ config.h
sed -i “” “s/#define HAVE_COPYSIGN 0/#define HAVE_COPYSIGN 1/“ config.h
sed -i “” “s/#define HAVE_ERF 0/#define HAVE_ERF 1/“ config.h
sed -i “” “s/#define HAVE_HYPOT 0/#define HAVE_HYPOT 1/“ config.h
sed -i “” “s/#define HAVE_ISNAN 0/#define HAVE_ISNAN 1/“ config.h
sed -i “” “s/#define HAVE_ISFINITE 0/#define HAVE_ISFINITE 1/“ config.h
sed -i “” “s/#define HAVE_INET_ATON 0/#define HAVE_INET_ATON 1/“ config.h
sed -i “” “s/#define getenv(x) NULL/\/\/ #define getenv(x) NULL/“ config.h

复制上面的脚本代码到我们新建的文件中，打开终端，到ffmpeg文件下使用命令就可以进行编译

sh build.sh

# 参考

1. 码牛学院https://maniu.ke.qq.com/