diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0858ecab5..087535b69 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,16 +19,16 @@ function( add_pk3 PK3_NAME PK3_DIR )
 		set( PK3_TARGET "pk3" )
 	endif( ${PK3_TARGET} STREQUAL "zdoom_pk3" )
 
-	if( NO_GENERATOR_EXPRESSIONS )
+	if( NOT NO_GENERATOR_EXPRESSIONS )
 		add_custom_command( OUTPUT ${ZDOOM_OUTPUT_DIR}/${PK3_NAME}
 			COMMAND ${ZIPDIR_EXE} -udf ${ZDOOM_OUTPUT_DIR}/${PK3_NAME} ${PK3_DIR}
 			COMMAND ${CMAKE_COMMAND} -E copy_if_different ${ZDOOM_OUTPUT_DIR}/${PK3_NAME} $<TARGET_FILE_DIR:zdoom>
 			DEPENDS zipdir ${PK3_DIR} )
-	else( NO_GENERATOR_EXPRESSIONS )
+	else( NOT NO_GENERATOR_EXPRESSIONS )
 		add_custom_command( OUTPUT ${ZDOOM_OUTPUT_DIR}/${PK3_NAME}
 			COMMAND ${ZIPDIR_EXE} -udf ${ZDOOM_OUTPUT_DIR}/${PK3_NAME} ${PK3_DIR}
 			DEPENDS zipdir ${PK3_DIR} )
-	endif( NO_GENERATOR_EXPRESSIONS )
+	endif( NOT NO_GENERATOR_EXPRESSIONS )
 
 	add_custom_target( ${PK3_TARGET} ALL
 		DEPENDS ${ZDOOM_OUTPUT_DIR}/${PK3_NAME} )
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 4a05c8278..708e562c4 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -511,29 +511,46 @@ if( FLUIDSYNTH_FOUND )
 endif( FLUIDSYNTH_FOUND )
 
 # Start defining source files for ZDoom
-
+set( PLAT_WIN32_SOURCES
+	win32/eaxedit.cpp
+	win32/fb_d3d9.cpp
+	win32/fb_d3d9_wipe.cpp
+	win32/fb_ddraw.cpp
+	win32/hardware.cpp
+	win32/helperthread.cpp
+	win32/i_cd.cpp
+	win32/i_crash.cpp
+	win32/i_input.cpp
+	win32/i_keyboard.cpp
+	win32/i_mouse.cpp
+	win32/i_dijoy.cpp
+	win32/i_rawps2.cpp
+	win32/i_xinput.cpp
+	win32/i_main.cpp
+	win32/i_movie.cpp
+	win32/i_system.cpp
+	win32/st_start.cpp
+	win32/win32video.cpp )
+set( PLAT_SDL_SOURCES
+	sdl/crashcatcher.c
+	sdl/hardware.cpp
+	sdl/i_cd.cpp
+	sdl/i_input.cpp
+	sdl/i_joystick.cpp
+	sdl/i_main.cpp
+	sdl/i_movie.cpp
+	sdl/i_system.cpp
+	sdl/sdlvideo.cpp
+	sdl/st_start.cpp )
+set( PLAT_MAC_SOURCES
+	sdl/SDLMain.m
+	sdl/iwadpicker_cocoa.mm
+	sdl/i_system_cocoa.mm )
 if( WIN32 )
 	set( SYSTEM_SOURCES_DIR win32 )
-	set( SYSTEM_SOURCES
-		win32/eaxedit.cpp
-		win32/fb_d3d9.cpp
-		win32/fb_d3d9_wipe.cpp
-		win32/fb_ddraw.cpp
-		win32/hardware.cpp
-		win32/helperthread.cpp
-		win32/i_cd.cpp
-		win32/i_crash.cpp
-		win32/i_input.cpp
-		win32/i_keyboard.cpp
-		win32/i_mouse.cpp
-		win32/i_dijoy.cpp
-		win32/i_rawps2.cpp
-		win32/i_xinput.cpp
-		win32/i_main.cpp
-		win32/i_movie.cpp
-		win32/i_system.cpp
-		win32/st_start.cpp
-		win32/win32video.cpp )
+	set( SYSTEM_SOURCES ${PLAT_WIN32_SOURCES} )
+	set( OTHER_SYSTEM_SOURCES ${PLAT_SDL_SOURCES} ${PLAT_MAC_SOURCES} )
+	
 	if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 		# CMake is not set up to compile and link rc files with GCC. :(
 		add_custom_command( OUTPUT zdoom-rc.o
@@ -545,19 +562,12 @@ if( WIN32 )
 	endif( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
 else( WIN32 )
 	set( SYSTEM_SOURCES_DIR sdl )
-	set( SYSTEM_SOURCES
-		sdl/crashcatcher.c
-		sdl/hardware.cpp
-		sdl/i_cd.cpp
-		sdl/i_input.cpp
-		sdl/i_joystick.cpp
-		sdl/i_main.cpp
-		sdl/i_movie.cpp
-		sdl/i_system.cpp
-		sdl/sdlvideo.cpp
-		sdl/st_start.cpp )
+	set( SYSTEM_SOURCES ${PLAT_SDL_SOURCES} )
 	if( APPLE )
-		set( SYSTEM_SOURCES ${SYSTEM_SOURCES} sdl/SDLMain.m sdl/iwadpicker_cocoa.mm sdl/i_system_cocoa.mm )
+		set( SYSTEM_SOURCES ${SYSTEM_SOURCES} ${PLAT_MAC_SOURCES} )
+		set( OTHER_SYSTEM_SOURCES ${PLAT_WIN32_SOURCES} )
+	else( APPLE )
+		set( OTHER_SYSTEM_SOURCES ${PLAT_WIN32_SOURCES} ${PLAT_MAC_SOURCES} )
 	endif( APPLE )
 endif( WIN32 )
 
@@ -627,8 +637,10 @@ file( GLOB HEADER_FILES
 	intermission/*.h
 	menu/*.h
 	oplsynth/*.h
+	oplsynth/dosbox/*.h
 	r_data/*.h
 	resourcefiles/*.h
+	sdl/*.h
 	sfmt/*.h
 	sound/*.h
 	textures/*.h
@@ -637,8 +649,103 @@ file( GLOB HEADER_FILES
 	*.h
 )
 
+# These files will be flagged as "headers" so that they appear in project files
+# without being compiled.
+set( NOT_COMPILED_SOURCE_FILES
+	${OTHER_SYSTEM_SOURCES}
+	sc_man_scanner.h
+	sc_man_scanner.re
+	g_doom/a_arachnotron.cpp
+	g_doom/a_archvile.cpp
+	g_doom/a_bossbrain.cpp
+	g_doom/a_bruiser.cpp
+	g_doom/a_cacodemon.cpp
+	g_doom/a_cyberdemon.cpp
+	g_doom/a_demon.cpp
+	g_doom/a_doomimp.cpp
+	g_doom/a_doomweaps.cpp
+	g_doom/a_fatso.cpp
+	g_doom/a_keen.cpp
+	g_doom/a_lostsoul.cpp
+	g_doom/a_painelemental.cpp
+	g_doom/a_possessed.cpp
+	g_doom/a_revenant.cpp
+	g_doom/a_scriptedmarine.cpp
+	g_doom/a_spidermaster.cpp
+	g_heretic/a_chicken.cpp
+	g_heretic/a_dsparil.cpp
+	g_heretic/a_hereticartifacts.cpp
+	g_heretic/a_hereticimp.cpp
+	g_heretic/a_hereticweaps.cpp
+	g_heretic/a_ironlich.cpp
+	g_heretic/a_knight.cpp
+	g_heretic/a_wizard.cpp
+	g_hexen/a_bats.cpp
+	g_hexen/a_bishop.cpp
+	g_hexen/a_blastradius.cpp
+	g_hexen/a_boostarmor.cpp
+	g_hexen/a_centaur.cpp
+	g_hexen/a_clericflame.cpp
+	g_hexen/a_clericholy.cpp
+	g_hexen/a_clericmace.cpp
+	g_hexen/a_clericstaff.cpp
+	g_hexen/a_dragon.cpp
+	g_hexen/a_fighteraxe.cpp
+	g_hexen/a_fighterhammer.cpp
+	g_hexen/a_fighterplayer.cpp
+	g_hexen/a_fighterquietus.cpp
+	g_hexen/a_firedemon.cpp
+	g_hexen/a_flechette.cpp
+	g_hexen/a_fog.cpp
+	g_hexen/a_healingradius.cpp
+	g_hexen/a_heresiarch.cpp
+	g_hexen/a_hexenspecialdecs.cpp
+	g_hexen/a_iceguy.cpp
+	g_hexen/a_korax.cpp
+	g_hexen/a_magecone.cpp
+	g_hexen/a_magelightning.cpp
+	g_hexen/a_magestaff.cpp
+	g_hexen/a_pig.cpp
+	g_hexen/a_serpent.cpp
+	g_hexen/a_spike.cpp
+	g_hexen/a_summon.cpp
+	g_hexen/a_teleportother.cpp
+	g_hexen/a_wraith.cpp
+	g_strife/a_acolyte.cpp
+	g_strife/a_alienspectres.cpp
+	g_strife/a_coin.cpp
+	g_strife/a_crusader.cpp
+	g_strife/a_entityboss.cpp
+	g_strife/a_inquisitor.cpp
+	g_strife/a_oracle.cpp
+	g_strife/a_programmer.cpp
+	g_strife/a_reaver.cpp
+	g_strife/a_rebels.cpp
+	g_strife/a_sentinel.cpp
+	g_strife/a_stalker.cpp
+	g_strife/a_strifeitems.cpp
+	g_strife/a_strifeweapons.cpp
+	g_strife/a_templar.cpp
+	g_strife/a_thingstoblowup.cpp
+	g_shared/sbarinfo_commands.cpp
+	xlat/xlat_parser.y
+	xlat_parser.c
+	xlat_parser.h
+
+	# We could have the ASM macro add these files, but it wouldn't add all
+	# platforms.
+	asm_ia32/a.asm
+	asm_ia32/misc.asm
+	asm_ia32/tmap.asm
+	asm_ia32/tmap2.asm
+	asm_ia32/tmap3.asm
+	asm_x86_64/tmap3.asm
+	asm_x86_64/tmap3.s
+)
+
 add_executable( zdoom WIN32
 	${HEADER_FILES}
+	${NOT_COMPILED_SOURCE_FILES}
 	autostart.cpp
 	${ASM_SOURCES}
 	${SYSTEM_SOURCES}
@@ -948,6 +1055,7 @@ add_executable( zdoom WIN32
 
 set_source_files_properties( xlat/parse_xlat.cpp PROPERTIES OBJECT_DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/xlat_parser.c" )
 set_source_files_properties( sc_man.cpp PROPERTIES OBJECT_DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/sc_man_scanner.h" )
+set_source_files_properties( ${NOT_COMPILED_SOURCE_FILES} PROPERTIES HEADER_FILE_ONLY TRUE )
 
 if(${CMAKE_SYSTEM_NAME} STREQUAL "SunOS")
 	# [BL] Solaris requires these to be explicitly linked.
@@ -1005,9 +1113,11 @@ if( MSVC )
 	)
 endif( MSVC )
 
+source_group("Assembly Files\\ia32" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/asm_ia32/.+")
+source_group("Assembly Files\\x86_64" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/asm_x86_64/.+")
 source_group("Audio Files" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/sound/.+")
 source_group("Audio Files\\OPL Synth" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/oplsynth/.+")
-source_group("Audio Files\\OPL Synth\\DOSBox" FILES oplsynth/dosbox/opl.h oplsynth/dosbox/opl.cpp)
+source_group("Audio Files\\OPL Synth\\DOSBox" FILES oplsynth/dosbox/opl.cpp oplsynth/dosbox/opl.h)
 source_group("Audio Files\\Timidity\\Headers" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/timidity/.+\\.h$")
 source_group("Audio Files\\Timidity\\Source" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/timidity/.+\\.cpp$")
 source_group("Decorate++" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/thingdef/.+")
@@ -1026,8 +1136,10 @@ source_group("Render Data\\Resource Sources" REGULAR_EXPRESSION "^${CMAKE_CURREN
 source_group("Render Data\\Textures" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/textures/.+")
 source_group("Render Interface" FILES r_defs.h r_renderer.h r_sky.cpp r_sky.h r_state.h r_utility.cpp r_utility.h)
 source_group("Resource Files" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/resourcefiles/.+")
+source_group("SDL Files" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/sdl/.+")
 source_group("SFML" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/sfmt/.+")
 source_group("Shared Game" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/g_shared/.+")
 source_group("Versioning" FILES version.h win32/zdoom.rc)
 source_group("Win32 Files" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/win32/.+")
-source_group("Xlat" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/xlat/.+")
+source_group("Xlat" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/xlat/.+" FILES ${CMAKE_CURRENT_BINARY_DIR}/xlat_parser.c ${CMAKE_CURRENT_BINARY_DIR}/xlat_parser.h)
+source_group("Source Files" FILES ${CMAKE_CURRENT_BINARY_DIR}/sc_man_scanner.h sc_man_scanner.re)