[CMake] How to use FindPackageHandleStandardArgs

[Denis Scherbakov]

> Yes, that's right. But...
> 
> The number of libraries I need to find depends on the
> COMPONENTS that
> were specified by the user in his CMakeLists.txt file. So I
> cannot hard
> code these variables as arguments to
> find_package_handle_standard_args(). That's why I chose to
> collect them
> in XXX-LIBRARIES first and pass that variable.
> 
> So, I'm still stuck I'm afraid.

You may pass a LIST of variables, this also works.

INCLUDE(FindPackageHandleStandardArgs)

LIST(APPEND myList "GSL_LIBRARIES" "GSL_LIBRARY" "GSL_CBLAS_LIBRARY" "GSL_INCLUDE_DIR")

FIND_PACKAGE_HANDLE_STANDARD_ARGS(GSL DEFAULT_MSG ${myList})

Denis