（二）FFmpeg-4.3.1配合android-ndk-r21b编译Android使用的so文件

编译环境

• Ubuntu
• FFmpeg-4.3.1
• android-ndk-r21b

修改FFmpeg-4.3.1下的configure文件

修改前

SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'  
LIB_INSTALL_EXTRA_CMD='$$(RANLIB)"$(LIBDIR)/$(LIBNAME)"'  
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'  
SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR)$(SLIBNAME)'

修改后

SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'  
LIB_INSTALL_EXTRA_CMD='$$(RANLIB)"$(LIBDIR)/$(LIBNAME)"'  
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'  
SLIB_INSTALL_LINKS='$(SLIBNAME)'

添加编译脚本 build_android.sh

• 对应脚本

#!/bin/bash

PREFIX=/home/it/ffmpeg-4.3.1/android/armeabi-v7a

TOOLCHAIN=/home/it/android-ndk-r21b/toolchains/llvm/prebuilt/linux-x86_64

build()
{
./configure \
--prefix=$PREFIX \
--disable-static \
--enable-shared \
--enable-small \
--enable-gpl \
--disable-doc \
--disable-programs \
--disable-avdevice \
--enable-cross-compile \
--target-os=android \
--arch=armeabi-v7a \
--cc=$TOOLCHAIN/bin/armv7a-linux-androideabi21-clang \
--cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi-

sudo make clean
sudo make -j4
sudo make install
}

build

编译命令

./android_build.sh

编译成功后对应生产文件

image.png