[cmake] Be sure to set cache variables in Cpp2PyConfig.cmake.in

Author: Wentzell

cmake/Cpp2PyConfig.cmake.in

@@ -3,21 +3,20 @@ if(NOT CPP2PY_FOUND)
 set(CPP2PY_FOUND True)
 
 # Version
-set(CPP2PY_VERSION                      @CPP2PY_VERSION@)
-set(CPP2PY_GIT_HASH                     @CPP2PY_GIT_HASH@)
+set(CPP2PY_VERSION @CPP2PY_VERSION@ CACHE STRING "Cpp2Py Version")
+set(CPP2PY_GIT_HASH @CPP2PY_GIT_HASH@ CACHE STRING "Cpp2Py Git Hash")
 
 # The compiler used for cpp2py
-set(CPP2PY_CXX_COMPILER                 @CMAKE_CXX_COMPILER@)
+set(CPP2PY_CXX_COMPILER @CMAKE_CXX_COMPILER@ CACHE FILEPATH "C++ compiler used by Cpp2Py")
 
 # Python Interpreter
-set(CPP2PY_PYTHON_EXECUTABLE            @PYTHON_EXECUTABLE@)
-set(CPP2PY_PYTHON_INTERPRETER           @PYTHON_EXECUTABLE@) # Backward Compat
-set(CPP2PY_PYTHON_LIB_DEST_ROOT         @PYTHON_LIB_DEST_ROOT@)
-set(CPP2PY_PYTHON_H5PY_HDF5VERSION      @PYTHON_H5PY_HDF5VERSION@)
-set(CPP2PY_PYTHON_NUMPY_VERSION_LT_17   @PYTHON_NUMPY_VERSION_LT_17@)
+set(CPP2PY_PYTHON_EXECUTABLE @PYTHON_EXECUTABLE@ CACHE FILEPATH "Python Executable")
+set(CPP2PY_PYTHON_INTERPRETER @PYTHON_EXECUTABLE@ CACHE FILEPATH "Python Executable") # Backward Compat
+set(CPP2PY_PYTHON_LIB_DEST_ROOT @PYTHON_LIB_DEST_ROOT@ CACHE PATH "Python module directory")
+set(CPP2PY_PYTHON_NUMPY_VERSION_LT_17 @PYTHON_NUMPY_VERSION_LT_17@ CACHE BOOL "True if the Numpy version older than 1.17")
 
 # Root of the Cpp2Py installation
-set(CPP2PY_ROOT  @CMAKE_INSTALL_PREFIX@)
+set(CPP2PY_ROOT @CMAKE_INSTALL_PREFIX@ CACHE PATH "Root of Cpp2Py")
 
 MESSAGE(STATUS "Found Cpp2pyConfig.cmake with version ${CPP2PY_VERSION}, hash = ${CPP2PY_GIT_HASH}")