Set *_FOUND variable in Find*.cmake modules #1192
Description
Rationale
Currently, different paths like ie. LIBHWLOC_LIBRARIES, LIBHWLOC_INCLUDE_DIRS are checked throughout CMake to make sure that the given library was found. These are set in Find* CMake modules. This kind of checks for a presence of a library shall be replaced by checking one variable, ie. LIBHWLOC_FOUND. This would be easier to maintain.
This can be done ie. with find_package_handle_standard_args:
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(
hwloc
DEFAULT_MSG
HWLOC_LIBRARY
HWLOC_INCLUDE_DIR
)
This would set HWLOC_FOUND variable if both HWLOC_LIBRARY and HWLOC_INCLUDE_DIR contain valid paths.