Merge pull request #1248 from martin-frbg/cmake-findpython

Update the search strategy for a Python3 interpreter

Author: langou

CMakeLists.txt

@@ -179,11 +179,10 @@ message(STATUS "Build tests: ${BUILD_TESTING}")
 if(BUILD_TESTING)
   set(_msg "Looking for Python3 needed for summary tests")
   message(STATUS "${_msg}")
-  # find_package(PythonInterp 3) cannot be used because /usr/bin/python may be
-  # a Python2 interpreter.
-  find_program(PYTHON_EXECUTABLE python3)
-  if(PYTHON_EXECUTABLE)
-    message(STATUS "${_msg} - found")
+  set(Python3_FIND_STRATEGY LOCATION)
+  find_package(Python3 COMPONENTS Interpreter)
+  if(Python3_Interpreter_FOUND )
+    message(STATUS "${_msg} - found: ${Python3_VERSION}")
   else()
     message(STATUS "${_msg} - not found (skipping summary tests)")
   endif()