modules: updated FindCorrade.cmake.

modules/FindCorrade.cmake

@@ -41,7 +41,8 @@
 #  CORRADE_BUILD_STATIC         - Defined if compiled as static libraries
 #  CORRADE_TARGET_UNIX          - Defined if compiled for some Unix flavor
 #   (Linux, BSD, OS X)
-#  CORRADE_TARGET_APPLE         - Defined if compiled for OS X
+#  CORRADE_TARGET_APPLE         - Defined if compiled for Apple platforms
+#  CORRADE_TARGET_IOS           - Defined if compiled for iOS
 #  CORRADE_TARGET_WINDOWS       - Defined if compiled for Windows
 #  CORRADE_TARGET_WINDOWS_RT    - Defined if compiled for Windows RT
 #  CORRADE_TARGET_NACL          - Defined if compiled for Google Chrome
@@ -211,6 +212,7 @@ set(_corradeFlags
     BUILD_STATIC
     TARGET_UNIX
     TARGET_APPLE
+    TARGET_IOS
     TARGET_WINDOWS
     TARGET_WINDOWS_RT
     TARGET_NACL