Check C/C++ compilers separately for AppleClang ranlib

Signed-off-by: Steven WdV <swdv@cs.ru.nl>
diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index 33e8d23..eda377e 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -221,8 +221,10 @@
 
 if(CMAKE_C_COMPILER_ID MATCHES "AppleClang")
     set(CMAKE_C_ARCHIVE_CREATE   "<CMAKE_AR> Scr <TARGET> <LINK_FLAGS> <OBJECTS>")
-    set(CMAKE_CXX_ARCHIVE_CREATE "<CMAKE_AR> Scr <TARGET> <LINK_FLAGS> <OBJECTS>")
     set(CMAKE_C_ARCHIVE_FINISH   "<CMAKE_RANLIB> -no_warning_for_no_symbols -c <TARGET>")
+endif()
+if(CMAKE_CXX_COMPILER_ID MATCHES "AppleClang")
+    set(CMAKE_CXX_ARCHIVE_CREATE "<CMAKE_AR> Scr <TARGET> <LINK_FLAGS> <OBJECTS>")
     set(CMAKE_CXX_ARCHIVE_FINISH "<CMAKE_RANLIB> -no_warning_for_no_symbols -c <TARGET>")
 endif()