Dropped support for 10.7 & 10.8

CMakeLists.txt

@@ -27,7 +27,7 @@ if(NOT CMAKE_OSX_ARCHITECTURES)
     set(CMAKE_OSX_ARCHITECTURES "x86_64" CACHE STRING "macOS architecture to build; 64-bit is expected" FORCE)
 endif()
 if(NOT CMAKE_OSX_DEPLOYMENT_TARGET)
-    set(CMAKE_OSX_DEPLOYMENT_TARGET "10.7" CACHE STRING "macOS deployement target; 10.7+ is expected" FORCE)
+    set(CMAKE_OSX_DEPLOYMENT_TARGET "10.9" CACHE STRING "macOS deployement target; 10.9+ is expected" FORCE)
 endif()
 if(NOT CMAKE_OSX_SYSROOT)
     # query the path to the default SDK, will fail on non-macOS, but it's okay.
@@ -268,9 +268,9 @@ if(SFML_OS_MACOSX)
         message(FATAL_ERROR "Only 64-bit architecture is supported")
     endif()
 
-    # Ensure macOS 10.7+ is used
-    if(CMAKE_OSX_DEPLOYMENT_TARGET VERSION_LESS "10.7")
-        message(FATAL_ERROR "macOS 10.7 or greater is required for the deployment target.")
+    # Ensure macOS 10.9+ is used
+    if(CMAKE_OSX_DEPLOYMENT_TARGET VERSION_LESS "10.9")
+        message(FATAL_ERROR "macOS 10.9 or greater is required for the deployment target.")
     endif()
 
     # configure Xcode templates