Mac Qt5.7 pkg-config文件在哪里？

Question

我试图在Qt5.7上构建gst-plugins-bad时遇到此错误:

Package Qt5Core was not found in the pkg-config search path.
Perhaps you should add the directory containing `Qt5Core.pc'
to the PKG_CONFIG_PATH environment variable

在Qt 5.5中,曾经存在一个~/Qt/5.5/clang_64/lib/pkgconfig/Qt5Core.pc文件.但是,Qt5.7安装我只有一个Qt5OpenGLExtensions.pc和Qt5UiTools.pc内部~/Qt/5.7/clang_64/lib/pkgconfig.所有的pkg-configs都去了哪里？