export NDK=/root/ndk/android-ndk-r20

当前系统

export HOST_TAG=linux-x86_64

支持的 Android CUP 架构

export ARCH=aarch64

export CPU=armv8-a

export ARCH=armv7aexport CPU=armv7-a

支持的 Android 最低系统版本

export MIN=21export ANDROID_NDK_PLATFORM=android-21

export PREFIX=$(pwd)/android/$CPU

export MIN_PLATFORM=$NDK/platforms/android-$MINexport SYSROOT=$NDK/sysrootexportTOOLCHAIN=$NDK/toolchains/llvm/prebuilt/$HOS{T}_{T}AGexportAR=$TOOLCHAIN/bin/arm-linux-androideabi-arexport AS=$TOOLCHAIN/bin/arm-linux-androideabi-asexportCC=$TOOLCHAIN/bin/$ARCH-linux-androideabi$MIN-clangecho "-----------------------------"echo $CCexportCXX=$TOOLCHAIN/bin/$ARCH-linux-androideabi$MIN-clang++export LD=$TOOLCHAIN/bin/arm-linux-androideabi-ldexportNM=$TOOLCHAIN/bin/arm-linux-androideabi-nmexport RANLIB=$TOOLCHAIN/bin/arm-linux-androideabi-ranlibexportSTRIP=$TOOLCHAIN/bin/arm-linux-androideabi-strip

OPTIMIZE_CFLAGS="-DANDROID -I$NDK/sysroot/usr/include/arm-linux-androideabi/"ADD{I}_{L}DFLAGS="-Wl,-rpath-link=$MIN_PLATFORM/arch-arm/usr/lib -L$MIN_PLATFORM/arch-arm/usr/lib -no

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stdlib"

sed -i "" "s/SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'/SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'/" configuresed -i "" "s/LIB_INSTALL_EXTRA_CMD='$$(RANLIB)"$(LIBDIR)\/$(LIBNAME){"}^{\prime }/LI{B}_{I}NSTAL{L}_{E}XTR{A}_{C}MD{=}^{\prime }$$(RANLIB)"$(LIBDIR)\/$(LIBNAME){"}^{\prime }/"configuresed-i"""s/SLI{B}_{I}NSTAL{L}_{N}AME{=}^{\prime }$(SLIBNAME_WITH_VERSION)'/SLIB_INSTALL_NAME='$(SLIBNAM{E}_{W}IT{H}_{M}AJOR{)}^{\prime }/"configuresed-i"""s/SLI{B}_{I}NSTAL{L}_{L}INKS{=}^{\prime }$(SLIBNAME_WITH_MAJOR) $(SLIBNAME{)}^{\prime }/SLI{B}_{I}NSTAL{L}_{L}INKS{=}^{\prime }$(SLIBNAME)'/" configuresed -i -e 's/#define getenv(x) NULL//*#define getenv(x) NULL*//g' config.h

sed -i "" "s/SHFLAGS='-shared -Wl,-soname,$(SLIBNAME{)}^{\prime }/SHFLAGS{=}^{\prime }-shared-soname$(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.hsed -i "" "s/#define HAVE_TRUNCF 0/#define HAVE_TRUNCF 1/" config.hsed -i "" "s/#define HAVE_RINT 0/#define HAVE_RINT 1/" config.hsed -i "" "s/#define HAVE_LRINT 0/#define HAVE_LRINT 1/" config.hsed -i "" "s/#define HAVE_LRINTF 0/#define HAVE_LRINTF 1/" config.hsed -i "" "s/#define HAVE_ROUND 0/#define HAVE_ROUND 1/" config.hsed -i "" "s/#define HAVE_ROUNDF 0/#define HAVE_ROUNDF 1/" config.hsed -i "" "s/#define HAVE_CBRT 0/#define HAVE_CBRT 1/" config.hsed -i "" "s/#define HAVE_CBRTF 0/#define HAVE_CBRTF 1/" config.hsed -i "" "s/#define HAVE_COPYSIGN 0/#define HAVE_COPYSIGN 1/" config.hsed -i "" "s/#define HAVE_ERF 0/#define HAVE_ERF 1/" config.hsed -i "" "s/#define HAVE_HYPOT 0/#define HAVE_HYPOT 1/" config.hsed -i "" "s/#define HAVE_ISNAN 0/#define HAVE_ISNAN 1/" config.hsed -i "" "s/#define HAVE_ISFINITE 0/#define HAVE_ISFINITE 1/" config.hsed -i "" "s/#define HAVE_INET_ATON 0/#define HAVE_INET_ATON 1/" config.hsed -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