1. 编译libfdk-aac

下载源码：$ git clone https://github.com/mstorsjo/fdk-aac.git

编译

$ cd fdk-aac
$ sudo apt install autoconf
$ sudo apt-get install libtool
$ ./autogen.sh
$ ./configure --prefix=$HOME/build/libfdk_aac/ --host=arm-xilinx-linux-gnueabi --enable-static CC=arm-xilinx-linux-gnueabi-gcc CFLAGS="-mfloat-abi=softfp -mfpu=neon"
$ make -j 4
$ make install

2. 编译ffmpeg

编写编译脚本mk.sh

#!/bin/bash

./configure  --prefix=$PWD/_install     --extra-cflags=-I$HOME/build/libfdk_aac/include      --extra-ldflags=-L$HOME/build/libfdk_aac/lib      --arch=arm     --target-os=linux     --cc=arm-xilinx-linux-gnueabi-gcc     --enable-cross-compile     --cross-prefix=arm-xilinx-linux-gnueabi-     --strip=arm-xilinx-linux-gnueabi-strip     --enable-neon     --enable-mipsfpu     --enable-static     --enable-shared     --enable-nonfree     --enable-libfdk-aac     --disable-decoders     --enable-decoder=h264     --enable-decoder=ac3     --enable-decoder=aac     --enable-decoder=mp2 

make

make install

ffmpeg 编译集成libfdk-aac

原文：https://www.cnblogs.com/standardzero/p/10931169.html