本文介绍了如何在AARCH64架构上进行x264和ffmpeg的交叉编译步骤。首先，配置x264的configure选项，然后执行make和make install。接着，配置ffmpeg的configure，同样执行编译和安装。最终，在指定目录下生成了所需的头文件和库文件。
1.下载解压x264，配置configure:
./configure --prefix=/home/work/x264 --enable-shared --enable-static --host=arm-linux --cross-prefix=/usr/local/linaro-aarch64-2018.08-gcc8.2/bin/aarch64-linux-gnu- --disable-opencl --enable-pic --disable-asm
2.生成makefile后
make && make install
3.下载解压ffmpeg，配置configure:
./configure --prefix=PWD/install−−target−os=linux−−arch=aarch64−−enable−cross−compile−−cross−prefix=/usr/local/linaro−aarch64−2018.08−gcc8.2/bin/aarch64−linux−gnu−−−enable−shared−−disable−doc−−enable−libx264−−extra−cflags=−I/home/work/x264−master/install/include−−extra−ldflags=−L/home/work/x264−master/install/lib−−enable−gpl※不需要x264交叉编译的场合：./configure−−prefix=PWD/_install --target-os=linux --arch=aarch64 --enable-cross-compile --cross-prefix=/usr/local/linaro-aarch64-2018.08-gcc8.2/bin/aarch64-linux-gnu- --enable-shared --disable-doc --enable-libx264 --extra-cflags=-I/home/work/x264-master/_install/include --extra-ldflags=-L/home/work/x264-master/_install/lib --enable-gpl
※不需要x264交叉编译的场合：
./configure --prefix=PWD/install−−target−os=linux−−arch=aarch64−−enable−cross−compile−−cross−prefix=/usr/local/linaro−aarch64−2018.08−gcc8.2/bin/aarch64−linux−gnu−−−enable−shared−−disable−doc−−enable−libx264−−extra−cflags=−I/home/work/x264−master/install/include−−extra−ldflags=−L/home/work/x264−master/install/lib−−enable−gpl※不需要x264交叉编译的场合：./configure−−prefix=PWD/_install --target-os=linux --arch=aarch64 --enable-cross-compile --cross-prefix=/usr/local/linaro-aarch64-2018.08-gcc8.2/bin/aarch64-linux-gnu- --enable-shared --disable-doc --enable-gpl
4.生成makefile后
make && make install
5.编译成功后，在configure配置好的路径目录_install下，生成了头文件和.so库文件
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