diff --git a/codemp/CMakeLists.txt b/codemp/CMakeLists.txt
index a0f3246..dec8e7c 100644
--- a/codemp/CMakeLists.txt
+++ b/codemp/CMakeLists.txt
@@ -1,4 +1,6 @@
 cmake_minimum_required(VERSION 2.6)
+include(CheckCCompilerFlag)
+include(CheckCXXCompilerFlag)
 
 project(jamp)
 
@@ -18,24 +20,45 @@ endif()
 
 if(CMAKE_COMPILER_IS_GNUC OR CMAKE_C_COMPILER_ID STREQUAL "Clang")
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pipe -O2")
-	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wno-unknown-pragmas -Wno-write-strings -Wno-missing-braces")
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-strict-aliasing -fno-strict-overflow")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wno-unknown-pragmas")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-write-strings -Wno-missing-braces")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-switch -Wno-comment")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-variable")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-multichar")
 endif()
 
 if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pipe -O2")
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-unknown-pragmas -Wno-write-strings -Wno-missing-braces")
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing -fno-strict-overflow")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-unknown-pragmas")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-write-strings -Wno-missing-braces")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-switch -Wno-comment")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-variable")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-multichar")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-reorder")
 endif()
 
 if(CMAKE_COMPILER_IS_GNUCXX)
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-pragmas -fpermissive")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-pragmas")
 endif()
 
 if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-parentheses-equality")
 endif()
 
+check_c_compiler_flag(-Wno-unused-but-set-variable cc_has_unused_but_set)
+if (cc_has_unused_but_set)
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-but-set-variable")
+endif()
+
+check_cxx_compiler_flag(-Wno-unused-but-set-variable cxx_has_unused_but_set)
+if (cxx_has_unused_but_set)
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-but-set-variable")
+endif()
+
 # avoid -rdynamic or loaded libraries will stomp over cvars
 set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
 set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")