博客

1、安装msys2环境

msys2可以兼容32位和64位。因此需要配置–host=i686-w64-mingw32或者–host=i686-w64-mingw32，否则会提示no working c compiler found。

修改msys2安装路径下面etc/fstab文件，指向qt的mingw路径

运行mingw32.exe，安装automake等一些基本的编译环境base-devel，输入which mingw32-make，可以看到已经正确识别了qt自带的编译器。

如果需要使用64位的编译器，方法基本类似，可以参考响应资料。

2、编译x264

./configure --host=i686-w64-mingw32 --prefix=$(pwd)/install --enable-shared --enable-static --disable-opencl
make -j8
//此时如果提示gcc.exe no input files那么输入gcc -v
gcc -v
make -j8
make install

3、编译qsv编解码库

autoreconf -i
./configure --prefix=$(pwd)/install --host=i686-w64-mingw32
make -j8
gcc -v
make -j8
make install

4、编译x265的库

使用cmake生成Makefile，然后使用mingw32-make 编译。需要注意环境变量设置正确。

5、编译ffmpeg

export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/cygdrive/e/softdev/transit/QtPro/mfx_dispatch-master/install/lib/pkgconfig/:/cygdrive/e/softdev/transit/QtPro/x264-master/install/lib/pkgconfig/:/cygdrive/e/softdev/transit/QtPro/x265-master/build/mingw_qt-5.14.2/install/lib/pkgconfig/

./configure --enable-shared --enable-static --enable-gpl --enable-libx264 --enable-libx265 --enable-libmfx --enable-decoder=h264 --enable-encoder=h264 --enable-decoder=h264_qsv --enable-encoder=h264_qsv --enable-encoder=h265 --enable-decoder=h265 --prefix=$(pwd)/install --enable-encoder=h264 --enable-encoder=h264_qsv --enable-encoder=h265 --target-os=mingw32 --disable-opencl --extra-cflags='-I/cygdrive/e/softdev/transit/QtPro/x264-master/install/include/ -I/cygdrive/e/softdev/transit/QtPro/mfx_dispatch-master/install/include/ -I/cygdrive/e/softdev/transit/QtPro/mfx_dispatch-master/install/include/mfx -I/cygdrive/e/softdev/transit/QtPro/x265-master/build/mingw_qt-5.14.2/install/include/' --extra-ldflags='-L/cygdrive/e/softdev/transit/QtPro/x264-master/install/lib/ -L/cygdrive/e/softdev/transit/QtPro/mfx_dispatch-master/install/lib/ -L/cygdrive/e/softdev/transit/QtPro/x265-master/build/mingw_qt-5.14.2/install/lib/' --enable-protocol=tcp --enable-demuxer=rtsp --enable-network


//上面的配置需要根据具体情况有所差异
make -j8
make install
//注意不能使用mingw32-make