ffmpeg 移植到arm 编译笔记

编译笔记

Yams 移植

1. 解压 tar -zxvf yasm-1.3.0.tar.gz
2. 切换到目录 cd yasm-1.3.0/
3. ./configure –enable-shared –prefix=/workspace/arm –host=arm-linux
4. Make ;make install
   

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X264 编译：

1. 解压
2. 切换到目录
3. ./configure –enable-static –disable-asm –host=arm-none-linux-gnueabi –prefix=/workspace/arm

4. 修改config.mak

   • CC=arm-none-linux-gnueabi-gcc
   • LD=arm-none-linux-gnueabi-gcc -o
   • AR=arm-none-linux-gnueabi-ar rc
   • RANLIB=arm-none-linux-gnueabi-ranlib
   • LDFLAGS= -lm -lpthread -ldl -lrt

   修改x264.pc 添加 -ldl，否则 用pkg-config 会报错

prefix=/workspace/arm
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include

Name: x264
Description: H.264 (MPEG4 AVC) encoder library
Version: 0.157.x
Libs: -L${exec_prefix}/lib -lx264 -lpthread -lm -ldl
Libs.private: 
Cflags: -I${prefix}/include

1. Make ;make install
   

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CMAKE 安装

如cmake 低于3.xx版本，最好升级（x265 最好用 3.xx以上版本）。
删除旧版本 yum remove cmake -y
安装依赖(ccmake 需要)：
yum install ncurses
yum install ncurses-devel
tar -xvf cmake-3.10.3.tar.gz
cd cmake-3.10.3

./bootstrap
gmake
gmake install

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X265 编译：

1. 解压
2. 切换到目录 /workspace/deps/x265-2.8/build/arm-linux

3. 修改crosscompile.cmake 文件

   找到# specify the target environment
   SET(CMAKE_FIND_ROOT_PATH /opt/devspace/arm-2011.03/bin/)
   这里说明下，我的交叉编译工具目录是/opt/devspace/arm-2011.03/bin/

4. sh ./make-Makefiles.bash 生成makefile

5. 修改/workspace/deps/x265-2.7/build/arm-linux/CMakeFiles/cli.dir/link.txt
   添加 -ldl

   c libx265.so.151 -lpthread -ldl -Wl,-rpath,/workspace/deps/x265-2.7/build/arm-linux:

   修改 x265.pc 添加 -ldl -lpthread 否则 用pkg-config 会报错

prefix=/workspace/arm
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include

Name: x265
Description: H.265/HEVC video encoder
Version: 2.6
Libs: -L${libdir} -lx265
Libs.private: -lstdc++ -lrt -ldl -lpthread
Cflags: -I${includedir}

1. Make ;make install
   

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拷贝pkg-config（否则 找不到x265）

cp /bin/pkg-config /opt/devspace/arm-2011.03/bin/arm-none-linux-gnueabi-pkg-config

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配置ffmpeg

./configure –prefix=/workspace/arm –arch=arm –target-os=linux –cross-prefix=arm-none-linux-gnueabi- –enable-shared –enable-gpl –extra-cflags=-I/workspace/arm/include –extra-ldflags=-L/workspace/arm/lib –disable-static –disable-doc –enable-libx264 –enable-libx265 –enable-static –pkg-config-flags=–static –disable-postproc –disable-swscale

Make;make install