diff --git a/code/CMakeModules/PCHSupport.cmake b/code/CMakeModules/PCHSupport.cmake
index 7cd4c6c7d..0ef2243d6 100644
--- a/code/CMakeModules/PCHSupport.cmake
+++ b/code/CMakeModules/PCHSupport.cmake
@@ -34,18 +34,18 @@ ENDIF(MSVC)
 
 MACRO(_PCH_GET_COMPILE_FLAGS _out_compile_flags)
 	STRING(TOUPPER "CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}" _flags_var_name)
-	SET(${_out_compile_flags} ${${_flags_var_name}} )
+	SET(_FLAGS ${${_flags_var_name}} )
 
 	IF(NOT MSVC)
 		GET_TARGET_PROPERTY(_targetType ${_PCH_current_target} TYPE)
 		IF(${_targetType} STREQUAL SHARED_LIBRARY OR ${_targetType} STREQUAL MODULE_LIBRARY)
-			LIST(APPEND ${_out_compile_flags} "-fPIC")
+			LIST(APPEND _FLAGS "-fPIC")
 		ENDIF(${_targetType} STREQUAL SHARED_LIBRARY OR ${_targetType} STREQUAL MODULE_LIBRARY)
 	ENDIF(NOT MSVC)
 
 	GET_DIRECTORY_PROPERTY(DIRINC INCLUDE_DIRECTORIES )
 	FOREACH(item ${DIRINC})
-		LIST(APPEND ${_out_compile_flags} " ${_PCH_include_prefix}\"${item}\"")
+		LIST(APPEND _FLAGS " ${_PCH_include_prefix}\"${item}\"")
 	ENDFOREACH(item)
 
 	# Required for CMake 2.6
@@ -57,13 +57,32 @@ MACRO(_PCH_GET_COMPILE_FLAGS _out_compile_flags)
 
 	GET_DIRECTORY_PROPERTY(_directory_flags DEFINITIONS)
 	GET_DIRECTORY_PROPERTY(_directory_definitions DIRECTORY ${CMAKE_SOURCE_DIR} DEFINITIONS)
-	LIST(APPEND ${_out_compile_flags} ${GLOBAL_DEFINITIONS})
-	LIST(APPEND ${_out_compile_flags} ${_directory_flags})
-	LIST(APPEND ${_out_compile_flags} ${_directory_definitions})
-	LIST(APPEND ${_out_compile_flags} ${CMAKE_CXX_FLAGS})
+	LIST(APPEND _FLAGS ${GLOBAL_DEFINITIONS})
+	LIST(APPEND _FLAGS ${_directory_flags})
+	LIST(APPEND _FLAGS ${_directory_definitions})
+	LIST(APPEND _FLAGS ${CMAKE_CXX_FLAGS})
 
 	# Format definitions
-	SEPARATE_ARGUMENTS(${_out_compile_flags})
+	SEPARATE_ARGUMENTS(_FLAGS)
+
+	IF(CLANG)
+		SET(_IGNORE_NEXT OFF)
+		FOREACH(item ${_FLAGS})
+			IF(_IGNORE_NEXT)
+				SET(_IGNORE_NEXT OFF)
+			ELSE(_IGNORE_NEXT)
+				IF(item MATCHES "^-Xarch")
+					SET(_IGNORE_NEXT ON)
+				ELSEIF(item MATCHES "^-arch")
+					SET(_IGNORE_NEXT ON)
+				ELSE(item MATCHES "^-Xarch")
+					LIST(APPEND ${_out_compile_flags} ${item})					
+				ENDIF(item MATCHES "^-Xarch")
+			ENDIF(_IGNORE_NEXT)
+		ENDFOREACH(item)
+	ELSE(CLANG)
+		SET(${_out_compile_flags} ${_FLAGS})
+	ENDIF(CLANG)
 ENDMACRO(_PCH_GET_COMPILE_FLAGS)
 
 MACRO(_PCH_GET_PDB_FILENAME out_filename _target)
diff --git a/code/CMakeModules/nel.cmake b/code/CMakeModules/nel.cmake
index 67deb84e4..b8f74e4de 100644
--- a/code/CMakeModules/nel.cmake
+++ b/code/CMakeModules/nel.cmake
@@ -326,6 +326,11 @@ MACRO(NL_SETUP_SNOWBALLS_DEFAULT_OPTIONS)
   OPTION(WITH_SNOWBALLS_SERVER    "Build Snowballs Services"                      ON )
 ENDMACRO(NL_SETUP_SNOWBALLS_DEFAULT_OPTIONS)
 
+MACRO(ADD_PLATFORM_FLAGS _FLAGS)
+  SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} ${_FLAGS}")
+  SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} ${_FLAGS}")
+ENDMACRO(ADD_PLATFORM_FLAGS)
+
 MACRO(NL_SETUP_BUILD)
 
   #-----------------------------------------------------------------------------
@@ -422,19 +427,27 @@ MACRO(NL_SETUP_BUILD)
   STRING(STRIP ${PLATFORM_CXXFLAGS} PLATFORM_CXXFLAGS)
   STRING(STRIP ${PLATFORM_LINKFLAGS} PLATFORM_LINKFLAGS)
 
-  IF(TARGET_CPU STREQUAL "x86_64")
-    SET(TARGET_X64 1)
-    SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -DHAVE_X86_64")
-    SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -DHAVE_X86_64")
-  ELSEIF(TARGET_CPU STREQUAL "x86")
-    SET(TARGET_X86 1)
-    SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -DHAVE_X86")
-    SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -DHAVE_X86")
-  ELSEIF(TARGET_CPU STREQUAL "arm")
-    SET(TARGET_ARM 1)
-    SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -DHAVE_ARM")
-    SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -DHAVE_ARM")
-  ENDIF(TARGET_CPU STREQUAL "x86_64")
+  IF(NOT CMAKE_OSX_ARCHITECTURES)
+    IF(TARGET_CPU STREQUAL "x86_64")
+      SET(TARGET_X64 1)
+    ELSEIF(TARGET_CPU STREQUAL "x86")
+      SET(TARGET_X86 1)
+    ELSEIF(TARGET_CPU STREQUAL "armv7s")
+      SET(TARGET_ARM 1)
+      SET(TARGET_ARMV7S 1)
+    ELSEIF(TARGET_CPU STREQUAL "armv7")
+      SET(TARGET_ARM 1)
+      SET(TARGET_ARMV7 1)
+    ELSEIF(TARGET_CPU STREQUAL "armv6")
+      SET(TARGET_ARM 1)
+      SET(TARGET_ARMV6 1)
+    ELSEIF(TARGET_CPU STREQUAL "armv5")
+      SET(TARGET_ARM 1)
+      SET(TARGET_ARMV5 1)
+    ELSEIF(TARGET_CPU STREQUAL "arm")
+      SET(TARGET_ARM 1)
+    ENDIF(TARGET_CPU STREQUAL "x86_64")
+  ENDIF(NOT CMAKE_OSX_ARCHITECTURES)
 
   # Fix library paths suffixes for Debian MultiArch
   IF(LIBRARY_ARCHITECTURE)
@@ -447,35 +460,65 @@ MACRO(NL_SETUP_BUILD)
     ENDIF(TARGET_X86)
   ENDIF(LIBRARY_ARCHITECTURE)
 
+  IF(APPLE AND NOT IOS)
+    SET(CMAKE_INCLUDE_PATH /opt/local/include ${CMAKE_INCLUDE_PATH})
+    SET(CMAKE_LIBRARY_PATH /opt/local/lib ${CMAKE_LIBRARY_PATH})
+  ENDIF(APPLE AND NOT IOS)
+
+  IF(TARGET_ARM)
+    IF(TARGET_ARMV7)
+      ADD_PLATFORM_FLAGS("-DHAVE_ARMV7")
+    ENDIF(TARGET_ARMV7)
+
+    IF(TARGET_ARMV6)
+      ADD_PLATFORM_FLAGS("-HAVE_ARMV6")
+    ENDIF(TARGET_ARMV6)
+
+    ADD_PLATFORM_FLAGS("-DHAVE_ARM")
+  ENDIF(TARGET_ARM)
+
+  IF(TARGET_X86)
+    ADD_PLATFORM_FLAGS("-DHAVE_X86")
+  ENDIF(TARGET_X86)
+
+  IF(TARGET_X64)
+    ADD_PLATFORM_FLAGS("-DHAVE_X64 -DHAVE_X86_64")
+  ENDIF(TARGET_X64)
+
+  IF(WITH_LOGGING)
+    ADD_PLATFORM_FLAGS("-DENABLE_LOGS")
+  ENDIF(WITH_LOGGING)
+
   IF(MSVC)
     IF(MSVC10)
+      ADD_PLATFORM_FLAGS("/Gy- /MP")
       # /Ox is working with VC++ 2010, but custom optimizations don't exist
-      SET(SPEED_OPTIMIZATIONS "/Ox /GF /GS-")
+      SET(RELEASE_CFLAGS "/Ox /GF /GS- ${RELEASE_CFLAGS}")
       # without inlining it's unusable, use custom optimizations again
-      SET(MIN_OPTIMIZATIONS "/Od /Ob1")
+      SET(DEBUG_CFLAGS "/Od /Ob1 /GF- ${DEBUG_CFLAGS}")
     ELSEIF(MSVC90)
+      ADD_PLATFORM_FLAGS("/Gy- /MP")
       # don't use a /O[012x] flag if you want custom optimizations
-      SET(SPEED_OPTIMIZATIONS "/Ob2 /Oi /Ot /Oy /GT /GF /GS-")
+      SET(RELEASE_CFLAGS "/Ob2 /Oi /Ot /Oy /GT /GF /GS- ${RELEASE_CFLAGS}")
       # without inlining it's unusable, use custom optimizations again
-      SET(MIN_OPTIMIZATIONS "/Ob1")
+      SET(DEBUG_CFLAGS "/Ob1 /GF- ${DEBUG_CFLAGS}")
     ELSEIF(MSVC80)
+      ADD_PLATFORM_FLAGS("/Gy- /Wp64")
       # don't use a /O[012x] flag if you want custom optimizations
-      SET(SPEED_OPTIMIZATIONS "/Ox /GF /GS-")
+      SET(RELEASE_CFLAGS "/Ox /GF /GS- ${RELEASE_CFLAGS}")
       # without inlining it's unusable, use custom optimizations again
-      SET(MIN_OPTIMIZATIONS "/Od /Ob1")
+      SET(DEBUG_CFLAGS "/Od /Ob1 ${DEBUG_CFLAGS}")
     ELSE(MSVC10)
       MESSAGE(FATAL_ERROR "Can't determine compiler version ${MSVC_VERSION}")
     ENDIF(MSVC10)
 
-    SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} /D_CRT_SECURE_NO_WARNINGS /D_CRT_NONSTDC_NO_WARNINGS /DWIN32 /D_WINDOWS /W3 /Zm1000 /MP /Gy-")
-    SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} /D_CRT_SECURE_NO_WARNINGS /D_CRT_NONSTDC_NO_WARNINGS /DWIN32 /D_WINDOWS /W3 /Zm1000 /MP /Gy-")
+    ADD_PLATFORM_FLAGS("/D_CRT_SECURE_NO_DEPRECATE /D_CRT_SECURE_NO_WARNINGS /D_CRT_NONSTDC_NO_WARNINGS /DWIN32 /D_WINDOWS /Zm1000 /wd4250")
 
     IF(TARGET_X64)
       # Fix a bug with Intellisense
-      SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} /D_WIN64")
-      SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} /D_WIN64")
+      ADD_PLATFORM_FLAGS("/D_WIN64")
       # Fix a compilation error for some big C++ files
-      SET(MIN_OPTIMIZATIONS "${MIN_OPTIMIZATIONS} /bigobj")
+      SET(RELEASE_CFLAGS "${RELEASE_CFLAGS} /bigobj")
     ELSE(TARGET_X64)
       # Allows 32 bits applications to use 3 GB of RAM
       SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} /LARGEADDRESSAWARE")
@@ -491,97 +534,201 @@ MACRO(NL_SETUP_BUILD)
       SET(NL_RELEASE_LINKFLAGS "/RELEASE ${NL_RELEASE_LINKFLAGS}")
     ENDIF(WITH_SYMBOLS)
 
-    SET(NL_DEBUG_CFLAGS "/Zi /MDd /RTC1 /D_DEBUG ${MIN_OPTIMIZATIONS} ${NL_DEBUG_CFLAGS}")
-    SET(NL_RELEASE_CFLAGS "/MD /DNDEBUG ${SPEED_OPTIMIZATIONS} ${NL_RELEASE_CFLAGS}")
+    SET(NL_DEBUG_CFLAGS "/Zi /MDd /RTC1 /D_DEBUG ${DEBUG_CFLAGS} ${NL_DEBUG_CFLAGS}")
+    SET(NL_RELEASE_CFLAGS "/MD /DNDEBUG ${RELEASE_CFLAGS} ${NL_RELEASE_CFLAGS}")
     SET(NL_DEBUG_LINKFLAGS "/DEBUG /OPT:NOREF /OPT:NOICF /NODEFAULTLIB:msvcrt /INCREMENTAL:YES ${NL_DEBUG_LINKFLAGS}")
     SET(NL_RELEASE_LINKFLAGS "/OPT:REF /OPT:ICF /INCREMENTAL:NO ${NL_RELEASE_LINKFLAGS}")
+
+    IF(WITH_WARNINGS)
+      SET(DEBUG_CFLAGS "/W4 ${DEBUG_CFLAGS}")
+    ELSE(WITH_WARNINGS)
+      SET(DEBUG_CFLAGS "/W3 ${DEBUG_CFLAGS}")
+    ENDIF(WITH_WARNINGS)
   ELSE(MSVC)
     IF(WIN32)
-      SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -DWIN32 -D_WIN32")
+      ADD_PLATFORM_FLAGS("-DWIN32 -D_WIN32")
+
+      IF(CLANG)
+        ADD_PLATFORM_FLAGS("-nobuiltininc")
+      ENDIF(CLANG)
     ENDIF(WIN32)
 
-    IF(APPLE)
-      IF(TARGET_CPU STREQUAL "x86")
-        SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -arch i386")
-        SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -arch i386")
-      ENDIF(TARGET_CPU STREQUAL "x86")
+    IF(TARGET_ARM)
+      ADD_PLATFORM_FLAGS("-mthumb")
+    ENDIF(TARGET_ARM)
 
-      IF(TARGET_CPU STREQUAL "x86_64")
-        SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -arch x86_64")
-        SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -arch x86_64")
-      ENDIF(TARGET_CPU STREQUAL "x86_64")
+    IF(APPLE)
+      IF(IOS)
+        SET(CMAKE_OSX_DEPLOYMENT_TARGET "10.7" CACHE PATH "" FORCE)
+      ELSE(IOS)
+        IF(NOT CMAKE_OSX_DEPLOYMENT_TARGET)
+          SET(CMAKE_OSX_DEPLOYMENT_TARGET "10.6" CACHE PATH "" FORCE)
+        ENDIF(NOT CMAKE_OSX_DEPLOYMENT_TARGET)
+      ENDIF(IOS)
+
+      IF(XCODE)
+        IF(IOS)
+          SET(CMAKE_OSX_SYSROOT "iphoneos" CACHE PATH "" FORCE)
+        ELSE(IOS)
+#          SET(CMAKE_OSX_SYSROOT "macosx" CACHE PATH "" FORCE)
+        ENDIF(IOS)
+      ELSE(XCODE)
+        IF(CMAKE_OSX_ARCHITECTURES)
+          SET(TARGETS_COUNT 0)
+          SET(_ARCHS)
+          FOREACH(_ARCH ${CMAKE_OSX_ARCHITECTURES})
+            IF(_ARCH STREQUAL "i386")
+              SET(_ARCHS "${_ARCHS} i386")
+              SET(TARGET_X86 1)
+              MATH(EXPR TARGETS_COUNT "${TARGETS_COUNT}+1")
+            ELSEIF(_ARCH STREQUAL "x86_64")
+              SET(_ARCHS "${_ARCHS} x86_64")
+              SET(TARGET_X64 1)
+              MATH(EXPR TARGETS_COUNT "${TARGETS_COUNT}+1")
+            ELSEIF(_ARCH STREQUAL "armv7")
+              SET(_ARCHS "${_ARCHS} armv7")
+              SET(TARGET_ARMV7 1)
+              SET(TARGET_ARM 1)
+              MATH(EXPR TARGETS_COUNT "${TARGETS_COUNT}+1")
+            ELSEIF(_ARCH STREQUAL "armv6")
+              SET(_ARCHS "${_ARCHS} armv6")
+              SET(TARGET_ARMV6 1)
+              SET(TARGET_ARM 1)
+              MATH(EXPR TARGETS_COUNT "${TARGETS_COUNT}+1")
+            ELSE(_ARCH STREQUAL "i386")
+              SET(_ARCHS "${_ARCHS} unknwon(${_ARCH})")
+            ENDIF(_ARCH STREQUAL "i386")
+          ENDFOREACH(_ARCH)
+          MESSAGE(STATUS "Compiling under Mac OS X for ${TARGETS_COUNT} architectures: ${_ARCHS}")
+        ELSE(CMAKE_OSX_ARCHITECTURES)
+          SET(TARGETS_COUNT 1)
+        ENDIF(CMAKE_OSX_ARCHITECTURES)
+
+        IF(TARGETS_COUNT EQUAL 1)
+          IF(TARGET_ARM)
+            IF(TARGET_ARMV7S)
+              ADD_PLATFORM_FLAGS("-arch armv7s")
+            ENDIF(TARGET_ARMV7S)
+
+            IF(TARGET_ARMV7)
+              ADD_PLATFORM_FLAGS("-arch armv7")
+            ENDIF(TARGET_ARMV7)
+
+            IF(TARGET_ARMV6)
+              ADD_PLATFORM_FLAGS("-arch armv6")
+            ENDIF(TARGET_ARMV6)
+
+            IF(TARGET_ARMV5)
+              ADD_PLATFORM_FLAGS("-arch armv5")
+            ENDIF(TARGET_ARMV5)
+          ENDIF(TARGET_ARM)
+
+          IF(TARGET_X86)
+            ADD_PLATFORM_FLAGS("-arch i386")
+          ENDIF(TARGET_X86)
+
+          IF(TARGET_X64)
+            ADD_PLATFORM_FLAGS("-arch x86_64")
+          ENDIF(TARGET_X64)
+        ELSE(TARGETS_COUNT EQUAL 1)
+          IF(TARGET_ARMV6)
+            ADD_PLATFORM_FLAGS("-Xarch_armv6 -mthumb -Xarch_armv6 -DHAVE_ARM -Xarch_armv6 -DHAVE_ARMV6")
+          ENDIF(TARGET_ARMV6)
+
+          IF(TARGET_ARMV7)
+            ADD_PLATFORM_FLAGS("-Xarch_armv7 -mthumb -Xarch_armv7 -DHAVE_ARM -Xarch_armv7 -DHAVE_ARMV7")
+          ENDIF(TARGET_ARMV7)
+
+          IF(TARGET_X86)
+            ADD_PLATFORM_FLAGS("-arch i386 -Xarch_i386 -DHAVE_X86")
+          ENDIF(TARGET_X86)
+
+          IF(TARGET_X64)
+            ADD_PLATFORM_FLAGS("-arch x86_64 -Xarch_x86_64 -DHAVE_X64 -Xarch_x86_64 -DHAVE_X86_64")
+          ENDIF(TARGET_X64)
+        ENDIF(TARGETS_COUNT EQUAL 1)
+
+        IF(IOS)
+          IF(IOS_VERSION)
+            PARSE_VERSION_STRING(${IOS_VERSION} IOS_VERSION_MAJOR IOS_VERSION_MINOR IOS_VERSION_PATCH)
+            CONVERT_VERSION_NUMBER(${IOS_VERSION_MAJOR} ${IOS_VERSION_MINOR} ${IOS_VERSION_PATCH} IOS_VERSION_NUMBER)
+
+            ADD_PLATFORM_FLAGS("-D__IPHONE_OS_VERSION_MIN_REQUIRED=${IOS_VERSION_NUMBER}")
+          ENDIF(IOS_VERSION)
+
+          IF(CMAKE_IOS_SYSROOT)
+            ADD_PLATFORM_FLAGS("-isysroot${CMAKE_IOS_SYSROOT}")
+            ADD_PLATFORM_FLAGS("-miphoneos-version-min=${IOS_VERSION}")
+            SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -Wl,-iphoneos_version_min,${IOS_VERSION}")
+          ENDIF(CMAKE_IOS_SYSROOT)
+
+          IF(CMAKE_IOS_SIMULATOR_SYSROOT AND TARGET_X86)
+            IF(TARGETS_COUNT EQUAL 1)
+              ADD_PLATFORM_FLAGS("-arch i386")
+            ELSE(TARGETS_COUNT EQUAL 1)
+              SET(XARCH "-Xarch_i386 ")
+            ENDIF(TARGETS_COUNT EQUAL 1)
+
+            # Always force -mmacosx-version-min to override environement variable
+            ADD_PLATFORM_FLAGS("${XARCH}-mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
+            SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} ${XARCH}-Wl,-macosx_version_min,${CMAKE_OSX_DEPLOYMENT_TARGET}")
+          ENDIF(CMAKE_IOS_SIMULATOR_SYSROOT AND TARGET_X86)
+        ELSE(IOS)
+          FOREACH(_SDK ${_CMAKE_OSX_SDKS})
+            IF(${_SDK} MATCHES "MacOSX${CMAKE_OSX_DEPLOYMENT_TARGET}\\.sdk")
+              SET(CMAKE_OSX_SYSROOT ${_SDK} CACHE PATH "" FORCE)
+            ENDIF(${_SDK} MATCHES "MacOSX${CMAKE_OSX_DEPLOYMENT_TARGET}\\.sdk")
+          ENDFOREACH(_SDK)
+
+          IF(CMAKE_OSX_SYSROOT)
+            ADD_PLATFORM_FLAGS("-isysroot ${CMAKE_OSX_SYSROOT}")
+          ELSE(CMAKE_OSX_SYSROOT)
+            MESSAGE(FATAL_ERROR "CMAKE_OSX_SYSROOT can't be determinated")
+          ENDIF(CMAKE_OSX_SYSROOT)
+
+          # Always force -mmacosx-version-min to override environement variable
+          ADD_PLATFORM_FLAGS("-mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
+          SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -Wl,-macosx_version_min,${CMAKE_OSX_DEPLOYMENT_TARGET}")
+        ENDIF(IOS)
+
+        SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -Wl,-headerpad_max_install_names")
+
+        IF(HAVE_FLAG_SEARCH_PATHS_FIRST)
+          SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -Wl,-search_paths_first")
+        ENDIF(HAVE_FLAG_SEARCH_PATHS_FIRST)
+      ENDIF(XCODE)
     ELSE(APPLE)
       IF(HOST_CPU STREQUAL "x86_64" AND TARGET_CPU STREQUAL "x86")
-        SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -m32 -march=i686")
-        SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -m32 -march=i686")
+        ADD_PLATFORM_FLAGS("-m32 -march=i686")
       ENDIF(HOST_CPU STREQUAL "x86_64" AND TARGET_CPU STREQUAL "x86")
 
       IF(HOST_CPU STREQUAL "x86" AND TARGET_CPU STREQUAL "x86_64")
-        SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -m64")
-        SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -m64")
+        ADD_PLATFORM_FLAGS("-m64")
       ENDIF(HOST_CPU STREQUAL "x86" AND TARGET_CPU STREQUAL "x86_64")
     ENDIF(APPLE)
 
-    SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -D_REENTRANT -pipe -Wall -W -Wpointer-arith -Wsign-compare -Wno-deprecated-declarations -Wno-multichar -Wno-unused -fno-strict-aliasing")
-    SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -D_REENTRANT -pipe -Wall -W -Wpointer-arith -Wsign-compare -Wno-deprecated-declarations -Wno-multichar -Wno-unused -fno-strict-aliasing")
-
-    IF(NOT ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
-      SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -ansi")
-      SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -ansi")
-    ENDIF(NOT ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
+    ADD_PLATFORM_FLAGS("-D_REENTRANT -pipe -fno-strict-aliasing")
 
     IF(WITH_COVERAGE)
-      SET(PLATFORM_CFLAGS "-fprofile-arcs -ftest-coverage ${PLATFORM_CFLAGS}")
-      SET(PLATFORM_CXXFLAGS "-fprofile-arcs -ftest-coverage ${PLATFORM_CXXFLAGS}")
+      ADD_PLATFORM_FLAGS("-fprofile-arcs -ftest-coverage")
     ENDIF(WITH_COVERAGE)
 
+    IF(WITH_WARNINGS)
+      ADD_PLATFORM_FLAGS("-Wall -W -Wpointer-arith -Wsign-compare -Wno-deprecated-declarations -Wno-multichar -Wno-unused")
+      IF(CLANG)
+        ADD_PLATFORM_FLAGS("-std=gnu99")
+      ELSE(CLANG)
+        ADD_PLATFORM_FLAGS("-ansi")
+      ENDIF(CLANG)
+    ENDIF(WITH_WARNINGS)
+
     IF(APPLE)
-      SET(PLATFORM_CFLAGS "-gdwarf-2 ${PLATFORM_CFLAGS}")
-      SET(PLATFORM_CXXFLAGS "-gdwarf-2 ${PLATFORM_CXXFLAGS}")
+      ADD_PLATFORM_FLAGS("-gdwarf-2")
     ENDIF(APPLE)
 
-    IF(APPLE AND XCODE)
-#      SET(CMAKE_OSX_SYSROOT "macosx" CACHE PATH "" FORCE)
-    ELSEIF(APPLE AND NOT XCODE)
-      IF(NOT CMAKE_OSX_DEPLOYMENT_TARGET)
-        SET(CMAKE_OSX_DEPLOYMENT_TARGET "10.6")
-      ENDIF(NOT CMAKE_OSX_DEPLOYMENT_TARGET)
-
-      FOREACH(_SDK ${_CMAKE_OSX_SDKS})
-        IF(${_SDK} MATCHES "MacOSX${CMAKE_OSX_DEPLOYMENT_TARGET}\\.sdk")
-          SET(CMAKE_OSX_SYSROOT ${_SDK} CACHE PATH "" FORCE)
-        ENDIF(${_SDK} MATCHES "MacOSX${CMAKE_OSX_DEPLOYMENT_TARGET}\\.sdk")
-      ENDFOREACH(_SDK)
-
-      IF(CMAKE_OSX_SYSROOT)
-        SET(PLATFORM_CFLAGS "-isysroot ${CMAKE_OSX_SYSROOT} ${PLATFORM_CFLAGS}")
-        SET(PLATFORM_CXXFLAGS "-isysroot ${CMAKE_OSX_SYSROOT} ${PLATFORM_CXXFLAGS}")
-      ELSE(CMAKE_OSX_SYSROOT)
-        MESSAGE(FATAL_ERROR "CMAKE_OSX_SYSROOT can't be determinated")
-      ENDIF(CMAKE_OSX_SYSROOT)
-
-      IF(CMAKE_OSX_ARCHITECTURES)
-        FOREACH(_ARCH ${CMAKE_OSX_ARCHITECTURES})
-          SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -arch ${_ARCH}")
-          SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -arch ${_ARCH}")
-        ENDFOREACH(_ARCH)
-      ENDIF(CMAKE_OSX_ARCHITECTURES)
-      IF(CMAKE_C_OSX_DEPLOYMENT_TARGET_FLAG)
-        SET(PLATFORM_CFLAGS "${PLATFORM_CFLAGS} -mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
-        SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
-      ENDIF(CMAKE_C_OSX_DEPLOYMENT_TARGET_FLAG)
-
-      SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -Wl,-headerpad_max_install_names")
-
-      IF(HAVE_FLAG_SEARCH_PATHS_FIRST)
-        SET(PLATFORM_LINKFLAGS "-Wl,-search_paths_first ${PLATFORM_LINKFLAGS}")
-      ENDIF(HAVE_FLAG_SEARCH_PATHS_FIRST)
-    ENDIF(APPLE AND XCODE)
-
     # Fix "relocation R_X86_64_32 against.." error on x64 platforms
     IF(TARGET_X64 AND WITH_STATIC AND NOT WITH_STATIC_DRIVERS)
-      SET(PLATFORM_CFLAGS "-fPIC ${PLATFORM_CFLAGS}")
-      SET(PLATFORM_CXXFLAGS "-fPIC ${PLATFORM_CXXFLAGS}")
+      ADD_PLATFORM_FLAGS("-fPIC")
     ENDIF(TARGET_X64 AND WITH_STATIC AND NOT WITH_STATIC_DRIVERS)
 
     SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -ftemplate-depth-48")
@@ -788,7 +935,10 @@ MACRO(SETUP_EXTERNAL)
           IF(VC_ROOT_DIR MATCHES "registry")
             GET_FILENAME_COMPONENT(VC_ROOT_DIR "[HKEY_CURRENT_USER\\Software\\Microsoft\\VCExpress\\10.0_Config;InstallDir]" ABSOLUTE)
             IF(VC_ROOT_DIR MATCHES "registry")
-              FILE(TO_CMAKE_PATH $ENV{VS100COMNTOOLS} VC_ROOT_DIR)
+              SET(VS100COMNTOOLS $ENV{VS100COMNTOOLS})
+              IF(VS100COMNTOOLS)
+                FILE(TO_CMAKE_PATH ${VS100COMNTOOLS} VC_ROOT_DIR)
+              ENDIF(VS100COMNTOOLS)
               IF(NOT VC_ROOT_DIR)
                 MESSAGE(FATAL_ERROR "Unable to find VC++ 2010 directory!")
               ENDIF(NOT VC_ROOT_DIR)