linux指定系统搜索头文件的路径

除了默认的/usr/include, /usr/local/include等include路径外,还可以通过设置环境变量来添加系统include的路径:
# C
    export C_INCLUDE_PATH=XXXX:$C_INCLUDE_PATH
# CPP
    export CPLUS_INCLUDE_PATH=XXX:$CPLUS_INCLUDE_PATH

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