[CMake] find_path() and non-standard paths

[Clinton Stimpson]

I have this

    FIND_PATH(QT_MKSPECS_DIR NAMES qconfig.pri
      PATH_SUFFIXES mkspecs)

And a Qt installation 
<qtinstall>/bin
<qtinstall>/mkspecs
<qtinstall>/include
<qtinstall>/lib

and this file exists <qtinstall>/mkspecs/qconfig.pri.

And if I set 
CMAKE_PREFIX_PATH=<qtinstall>
for a native build or 
CMAKE_FIND_ROOT_PATH=<qtinstall> 
for cross-compiling, it doesn't get found.
Any idea on the right way to make it found?

I can do append "/mkspecs" to each of the paths in CMAKE_FIND_ROOT_PATH and 
pass it to find_path() under PATHS.  But that seems like a hack.

Clint