Reduced required CMake version (#498)

Author: themarpe

scripts/find_python.cmake

@@ -1,14 +1,24 @@
-cmake_minimum_required(VERSION 3.12)
+cmake_minimum_required(VERSION 3.0)
 
-if(DEFINED ENV{HUNTER_PYTHON_LOCATION})
-  set(Python_ROOT_DIR $ENV{HUNTER_PYTHON_LOCATION})
-  set(Python_FIND_STRATEGY LOCATION)
-endif()
+if(${CMAKE_VERSION} VERSION_LESS "3.12.0")
+  find_package(PythonInterp 3 QUIET)
+  if(NOT PYTHONINTERP_FOUND)
+    message(FATAL_ERROR "Python not found")
+  endif()
+  message(${PYTHON_EXECUTABLE})
+else()
+  cmake_minimum_required(VERSION 3.12)
 
-find_package(Python COMPONENTS Interpreter QUIET)
+  if(DEFINED ENV{HUNTER_PYTHON_LOCATION})
+    set(Python_ROOT_DIR $ENV{HUNTER_PYTHON_LOCATION})
+    set(Python_FIND_STRATEGY LOCATION)
+  endif()
 
-if(NOT Python_Interpreter_FOUND)
-  message(FATAL_ERROR "Python not found")
-endif()
+  find_package(Python COMPONENTS Interpreter QUIET)
 
-message(${Python_EXECUTABLE})
+  if(NOT Python_Interpreter_FOUND)
+    message(FATAL_ERROR "Python not found")
+  endif()
+
+  message(${Python_EXECUTABLE})
+endif()

scripts/link-all.cmake

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.12)
+cmake_minimum_required(VERSION 3.0)
 
 string(COMPARE EQUAL "${HUNTER_INSTALL_PREFIX}" "" is_empty)
 if(is_empty)