cmake: Require C++17 support

kjellahl · kjellahl · commit 33825e983d1f · 2018-10-03T16:14:25.000+02:00
Fixes #9
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -28,7 +28,7 @@ option (SIGCXX_DISABLE_DEPRECATED "Disable deprecated" OFF)
 
 project (sigc++)
 
-set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y")
+set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
 
 set (PROJECT_SOURCE_DIR "${sigc++_SOURCE_DIR}/sigc++")
 
