build: remove deprecated cmake features

Signed-off-by: Benn Snyder <[email protected]>

Author: piedar

CMakeLists.txt

@@ -30,7 +30,7 @@
 # CMake directives
 ######################################################################################
 
-cmake_minimum_required(VERSION 2.8.12)
+cmake_minimum_required(VERSION 2.8.12...3.12)
 
 ######################################################################################
 # Project declaration and options

src/CMakeLists.txt

@@ -6,15 +6,16 @@ include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 include_directories(${LIBUSB_1_INCLUDE_DIRS})
 
 # Audio Firmware
-include(FindPythonInterp)
 IF(BUILD_REDIST_PACKAGE)
   # If this build is intended for a redistributable package, we can't include audios.bin, so we should include fwfetcher.py
   # and the package should run "python fwfetcher.py $INSTALL_PREFIX/share" as a postinst hook
   install (FILES "fwfetcher.py" DESTINATION "${CMAKE_INSTALL_PREFIX}/share")
 ELSE(BUILD_REDIST_PACKAGE)
   # If the install is local only, we can just run fwfetcher.py and install the audios.bin firmware to the system folder
+  cmake_minimum_required(VERSION 3.12)
+  find_package(Python REQUIRED COMPONENTS Interpreter)
   add_custom_target(firmware ALL
-      COMMAND ${PYTHON_EXECUTABLE} "${CMAKE_CURRENT_SOURCE_DIR}/fwfetcher.py" "../audios.bin"
+      COMMAND ${Python_EXECUTABLE} "${CMAKE_CURRENT_SOURCE_DIR}/fwfetcher.py" "../audios.bin"
       DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/fwfetcher.py")
   install (FILES "${CMAKE_CURRENT_BINARY_DIR}/../audios.bin" DESTINATION "${CMAKE_INSTALL_PREFIX}/share/libfreenect")
 ENDIF()

src/fwfetcher.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python
 
 from __future__ import absolute_import, division, print_function