diff --git a/.gitignore b/.gitignore
index dad74e7a..da152e4f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -99,3 +99,18 @@ libevent_openssl.pc
 /test/test-changelist
 /test/test-fdleak
 
+
+# Files generated by cmake
+/CMakeCache.txt
+/CMakeFiles/
+/CTestTestfile.cmake
+/DartConfiguration.tcl
+/LibeventConfig.cmake
+/LibeventConfigVersion.cmake
+/LibeventTargets.cmake
+/bin/
+/cmake_install.cmake
+/include/evconfig-private.h
+/lib/
+/tmp/
+/verify_tests.sh
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2602a6d3..71d96ec3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -119,6 +119,10 @@ endif()
 if (APPLE)
     # Get rid of deprecated warnings for OpenSSL on OSX 10.7 and greater.
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-error=deprecated-declarations")
+    # Get rid of "clang: warning: argument unused during compilation: -I etc
+    if ("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Qunused-arguments")
+    endif()
 endif()
 
 # Winsock.