diff --git a/CMakeLists.txt b/CMakeLists.txt
index d19d569fbd..9b87eda94a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,9 +10,9 @@ ENDIF( NOT CMAKE_BUILD_TYPE )
 set( ZDOOM_OUTPUT_DIR ${CMAKE_BINARY_DIR} CACHE PATH "Directory where zdoom.pk3 and the executable will be created." )
 set( ZDOOM_EXE_NAME "gzdoom" CACHE FILEPATH "Name of the executable to create" )
 
-if( CMAKE_COMPILER_IS_GNUCXX )
+if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 	set( PROFILE 0 CACHE BOOL "Enable profiling with gprof for Debug and RelWithDebInfo build types." )
-endif( CMAKE_COMPILER_IS_GNUCXX )
+endif( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 
 set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}")
 
diff --git a/bzip2/CMakeLists.txt b/bzip2/CMakeLists.txt
index 5c1255604b..6006f491cb 100644
--- a/bzip2/CMakeLists.txt
+++ b/bzip2/CMakeLists.txt
@@ -1,8 +1,8 @@
 cmake_minimum_required( VERSION 2.4 )
 
-if( CMAKE_COMPILER_IS_GNUC )
+if( "${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" )
 	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -fomit-frame-pointer" )
-endif( CMAKE_COMPILER_IS_GNUC )
+endif( "${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" )
 
 add_definitions( -DBZ_NO_STDIO )
 add_library( bz2
diff --git a/dumb/CMakeLists.txt b/dumb/CMakeLists.txt
index 591e314002..ee50c4a0af 100644
--- a/dumb/CMakeLists.txt
+++ b/dumb/CMakeLists.txt
@@ -11,9 +11,9 @@ endif( NOT CMAKE_BUILD_TYPE MATCHES "Release" )
 
 set( CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -D_DEBUG -DDEBUGMODE=1" )
 
-if( CMAKE_COMPILER_IS_GNUC )
+if( "${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" )
 	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wno-pointer-sign -Wno-uninitialized" )
-endif( CMAKE_COMPILER_IS_GNUC )
+endif( "${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" )
 
 CHECK_FUNCTION_EXISTS( itoa ITOA_EXISTS )
 if( NOT ITOA_EXISTS )
@@ -101,6 +101,6 @@ add_library( dumb
     src/it/xmeffect.c )
 target_link_libraries( dumb )
 
-if( CMAKE_COMPILER_IS_GNUCXX )
+if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 	set_source_files_properties( src/it/filter.cpp PROPERTIES COMPILE_FLAGS -msse )
-endif( CMAKE_COMPILER_IS_GNUCXX )
+endif( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
diff --git a/game-music-emu/CMakeLists.txt b/game-music-emu/CMakeLists.txt
index 7905f847ab..5c4a030434 100644
--- a/game-music-emu/CMakeLists.txt
+++ b/game-music-emu/CMakeLists.txt
@@ -6,7 +6,7 @@ if( NOT CMAKE_BUILD_TYPE MATCHES "Release" )
 	set( CMAKE_BUILD_TYPE "RelWithDebInfo" )
 endif( NOT CMAKE_BUILD_TYPE MATCHES "Release" )
 
-if( CMAKE_COMPILER_IS_GNUCXX )
+if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 	set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra" )
 	if( NOT PROFILE )
 		set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fomit-frame-pointer" )
@@ -15,7 +15,7 @@ if( CMAKE_COMPILER_IS_GNUCXX )
 	if( HAVE_NO_ARRAY_BOUNDS )
 		set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-array-bounds" )
 	endif( HAVE_NO_ARRAY_BOUNDS )
-endif( CMAKE_COMPILER_IS_GNUCXX )
+endif( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 
 add_library( gme
     gme/Blip_Buffer.cpp
diff --git a/gdtoa/CMakeLists.txt b/gdtoa/CMakeLists.txt
index 6fc394d8d4..4ad0be6de9 100644
--- a/gdtoa/CMakeLists.txt
+++ b/gdtoa/CMakeLists.txt
@@ -8,9 +8,9 @@ if( MSVC )
 	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /wd4554 /wd4102" )
 endif( MSVC )
 
-if( CMAKE_COMPILER_IS_GNUCXX )
+if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 	set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra" )
-endif( CMAKE_COMPILER_IS_GNUCXX )
+endif( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 
 include_directories( ${CMAKE_CURRENT_BINARY_DIR} )
 add_definitions( -DINFNAN_CHECK -DMULTIPLE_THREADS )
diff --git a/jpeg-6b/CMakeLists.txt b/jpeg-6b/CMakeLists.txt
index c3a5f458c6..5c8b5972e5 100644
--- a/jpeg-6b/CMakeLists.txt
+++ b/jpeg-6b/CMakeLists.txt
@@ -1,8 +1,8 @@
 cmake_minimum_required( VERSION 2.4 )
 
-if( CMAKE_COMPILER_IS_GNUC )
+if( "${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" )
 	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -fomit-frame-pointer" )
-endif( CMAKE_COMPILER_IS_GNUC )
+endif( "${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" )
 
 add_library( jpeg
     jcomapi.c
diff --git a/lzma/CMakeLists.txt b/lzma/CMakeLists.txt
index 6a2561c68c..7582712fea 100644
--- a/lzma/CMakeLists.txt
+++ b/lzma/CMakeLists.txt
@@ -1,8 +1,8 @@
 cmake_minimum_required( VERSION 2.4 )
 
-if( CMAKE_COMPILER_IS_GNUC )
+if( "${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" )
 	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -fomit-frame-pointer" )
-endif( CMAKE_COMPILER_IS_GNUC )
+endif( "${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" )
 
 set( LZMA_FILES
 	C/Archive/7z/7zDecode.c
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1b6dcb0190..80afa79540 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -11,14 +11,14 @@ include( FindPkgConfig )
 include( FindOpenGL )
 
 option( NO_ASM "Disable assembly code" )
-if( CMAKE_COMPILER_IS_GNUCXX )
+if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 	option( NO_STRIP "Do not strip Release or MinSizeRel builds" )
 	# At least some versions of Xcode fail if you strip with the linker
 	# instead of the separate strip utility.
 	if( APPLE )
 		set( NO_STRIP ON )
 	endif( APPLE )
-endif( CMAKE_COMPILER_IS_GNUCXX )
+endif( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 
 option( DYN_FLUIDSYNTH "Dynamically load fluidsynth" )
 
@@ -45,7 +45,7 @@ set( MINOR_VERSIONS "50" "49" "48" "47" "46" "45" "44" "43" "42" "41"
 	"27" "26" "25" "24" "23" "22" "21" "20" "21" "19" "18" "17" "16"
 	"15" "14" "13" "12" "11" "10" "09" "08" "07" "06" "05" "04" "03"
 	"02" "01" "00" )
-set( MAJOR_VERSIONS "34" "28" "26" "24" "22" "20" )
+set( MAJOR_VERSIONS "44" "34" "28" "26" "24" "22" "20" )
 set( FMOD_DIR_VERSIONS ${FMOD_DIR_VERSIONS} "../fmod" )
 foreach( majver ${MAJOR_VERSIONS} )
 	foreach( minver ${MINOR_VERSIONS} )
@@ -408,7 +408,7 @@ endif( SSE_MATTERS )
 
 # Set up flags for GCC
 
-if( CMAKE_COMPILER_IS_GNUCXX )
+if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 	if( PROFILE )
 		set( CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -pg" )
 		set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -pg" )
@@ -437,7 +437,7 @@ if( CMAKE_COMPILER_IS_GNUCXX )
 		set (CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} -s" )
 		set (CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL} -s" )
 	endif( NOT NO_STRIP )
-endif( CMAKE_COMPILER_IS_GNUCXX )
+endif( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 
 # Check for functions that may or may not exist.
 
@@ -547,15 +547,15 @@ if( WIN32 )
 		win32/st_start.cpp
 		win32/win32gliface.cpp
 		win32/win32video.cpp )
-	if( CMAKE_COMPILER_IS_GNUCXX )
+	if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 		# CMake is not set up to compile and link rc files with GCC. :(
 		add_custom_command( OUTPUT zdoom-rc.o
 			COMMAND windres -o zdoom-rc.o -i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zdoom.rc
 			DEPENDS win32/zdoom.rc )
 		set( SYSTEM_SOURCES ${SYSTEM_SOURCES} zdoom-rc.o )
-	else( CMAKE_COMPILER_IS_GNUCXX )
+	else( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 		set( SYSTEM_SOURCES ${SYSTEM_SOURCES} win32/zdoom.rc )
-	endif( CMAKE_COMPILER_IS_GNUCXX )
+	endif( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 else( WIN32 )
 	set( SYSTEM_SOURCES_DIR sdl )
 	set( SYSTEM_SOURCES
@@ -701,6 +701,7 @@ add_executable( zdoom WIN32
 	g_skill.cpp
 	gameconfigfile.cpp
 	gi.cpp
+	gitinfo.cpp
 	hu_scores.cpp
 	i_net.cpp
 	info.cpp
@@ -1050,7 +1051,7 @@ if( NOT WIN32 )
 		COMMAND chmod +x ${CMAKE_CURRENT_BINARY_DIR}/link-make
 		COMMAND /bin/sh -c ${CMAKE_CURRENT_BINARY_DIR}/link-make )
 endif( NOT WIN32 )
-if( CMAKE_COMPILER_IS_GNUCXX )
+if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 	# GCC misoptimizes this file
 	set_source_files_properties( oplsynth/fmopl.cpp PROPERTIES COMPILE_FLAGS "-fno-tree-dominator-opts -fno-tree-fre" )
 
@@ -1058,7 +1059,7 @@ if( CMAKE_COMPILER_IS_GNUCXX )
 	if( SSE_MATTERS )
 		set_source_files_properties( x86.cpp PROPERTIES COMPILE_FLAGS "-msse2 -mmmx" )
 	endif( SSE_MATTERS )
-endif( CMAKE_COMPILER_IS_GNUCXX )
+endif( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 
 if( MSVC )
 	set_target_properties(zdoom PROPERTIES LINK_FLAGS "/MANIFEST:NO")
diff --git a/src/sdl/i_main.cpp b/src/sdl/i_main.cpp
index 48395cea77..65b992f6a2 100644
--- a/src/sdl/i_main.cpp
+++ b/src/sdl/i_main.cpp
@@ -286,7 +286,7 @@ int main (int argc, char **argv)
 
 	char caption[100];
 	mysnprintf(caption, countof(caption), GAMESIG " %s (%s)", GetVersionString(), GetGitTime());
-	SDL_WM_SetCaption(caption);
+	SDL_WM_SetCaption(caption, caption);
 
 #ifdef __APPLE__
 	
diff --git a/src/sdl/i_system.cpp b/src/sdl/i_system.cpp
index cea3cb1c30..46e3898ff9 100644
--- a/src/sdl/i_system.cpp
+++ b/src/sdl/i_system.cpp
@@ -619,7 +619,7 @@ int I_PickIWad (WadStuff *wads, int numwads, bool showwin, int defaultiwad)
 		FString cmd("kdialog --title \""GAMESIG" ");
 		cmd << GetVersionString() << ": Select an IWAD to use\""
 		            " --menu \"ZDoom found more than one IWAD\n"
-		            "Select from the list below to determine which one to use:\"");
+		            "Select from the list below to determine which one to use:\"";
 
 		for(i = 0; i < numwads; ++i)
 		{
diff --git a/src/sound/fmodsound.cpp b/src/sound/fmodsound.cpp
index 133fc24069..6dd7a5459a 100644
--- a/src/sound/fmodsound.cpp
+++ b/src/sound/fmodsound.cpp
@@ -198,7 +198,9 @@ static const FEnumList SpeakerModeNames[] =
 	{ "Surround",				FMOD_SPEAKERMODE_SURROUND },
 	{ "5.1",					FMOD_SPEAKERMODE_5POINT1 },
 	{ "7.1",					FMOD_SPEAKERMODE_7POINT1 },
+#if FMOD_VERSION < 0x44400
 	{ "Prologic",				FMOD_SPEAKERMODE_PROLOGIC },
+#endif
 	{ "1",						FMOD_SPEAKERMODE_MONO },
 	{ "2",						FMOD_SPEAKERMODE_STEREO },
 	{ "4",						FMOD_SPEAKERMODE_QUAD },
diff --git a/src/version.h b/src/version.h
index a8975bd980..58282ba104 100644
--- a/src/version.h
+++ b/src/version.h
@@ -78,8 +78,8 @@ const char *GetVersionString();
 // SVN revision ever got.
 #define SAVEVER 4500
 
-#define SAVEVERSTRINGIFY2(x) str(x)
-#define SAVEVERSTRINGIFY(x) #x
+#define SAVEVERSTRINGIFY2(x) #x
+#define SAVEVERSTRINGIFY(x) SAVEVERSTRINGIFY2(x)
 #define SAVESIG "ZDOOMSAVE" SAVEVERSTRINGIFY(SAVEVER)
 
 #define DYNLIGHT
diff --git a/tools/updaterevision/CMakeLists.txt b/tools/updaterevision/CMakeLists.txt
index aeacf01f39..d985b9e3f0 100644
--- a/tools/updaterevision/CMakeLists.txt
+++ b/tools/updaterevision/CMakeLists.txt
@@ -1,12 +1,12 @@
 cmake_minimum_required( VERSION 2.4 )
 
 if( WIN32 )
-	if( CMAKE_COMPILER_IS_GNUC OR CMAKE_COMPILER_IS_GNUCXX )
+	if( "${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 		add_custom_command( OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/trustinfo.o
 			COMMAND windres -o ${CMAKE_CURRENT_BINARY_DIR}/trustinfo.o -i ${CMAKE_CURRENT_SOURCE_DIR}/trustinfo.rc
 			DEPENDS trustinfo.rc )
 		set( TRUSTINFO trustinfo.o )
-	else( CMAKE_COMPILER_IS_GNUC OR CMAKE_COMPILER_IS_GNUCXX )
+	else( "${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 		if( MSVC_VERSION GREATER 1399 )
 			# VC 8+ adds a manifest automatically to the executable. We need to
 			# merge ours with it.
@@ -14,7 +14,7 @@ if( WIN32 )
 		else( MSVC_VERSION GREATER 1399 )
 			set( TRUSTINFO trustinfo.rc )
 		endif( MSVC_VERSION GREATER 1399 )
-	endif( CMAKE_COMPILER_IS_GNUC OR CMAKE_COMPILER_IS_GNUCXX )
+	endif( "${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 endif( WIN32 )
 
 add_executable( updaterevision updaterevision.c ${TRUSTINFO} )
diff --git a/wadsrc/static/compatibility.txt b/wadsrc/static/compatibility.txt
index 795c7f0b02..1a115fbe8c 100644
--- a/wadsrc/static/compatibility.txt
+++ b/wadsrc/static/compatibility.txt
@@ -340,3 +340,12 @@ F481922F4881F74760F3C0437FD5EDD0 // map03
 	rebuildnodes
 }
 
+1891E029994B023910CFE0B3209C3CDB // Ultimate Simplicity, map07
+{
+	// It is possible to get stuck on skill 0 or 1 when no shots have been fired
+	// after sector 17 became accessible and before entering famous mancubus room.
+	// Monsters from the mentioned sector won't be alerted and so 
+	// they won't teleport into the battle. ACS will wait forever for their deaths.
+	setlinespecial 397 NoiseAlert 0 0 0 0 0
+	setlinespecial 411 NoiseAlert 0 0 0 0 0
+}