1.
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfighttps://www.thinbug.com/q/10855499export PKG_CONFIG_PATH=/usr/local/opt/openssl/lib/pkgconfighttps://blog.csdn.net/lipeiran1987/article/details/89279087
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig