mac环境下

下载obs代码

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git clone --recursive https://github.com/obsproject/obs-studio.git

qt环境

mac一般自带的有qt5，所以找到Qt5WidgetsConfig.cmake所在的目录之后，设置环境变量

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export Qt5Widgets_DIR=/usr/local/Cellar/qt/5.11.1/lib/cmake/Qt5Widgets
export Qt5MacExtras_DIR=/usr/local/Cellar/qt/5.11.1/lib/cmake/Qt5MacExtras

ffmpeg环境

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ffmpeg  ./configure  && make && make install

编译obs

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cd obs
mkdir build
cd build
cmake ..
make