- removed dependency on windows.h for music_fluidsynth_mididevice.cpp. It just accesses a single function from Windows so let's manually define this so that this file can use precompiled headers.

- enable precompiled headers for all non-system-specific MIDI devices.
- moved the native Windows and Mac MIDI devices into their respective sections in the project file so that they won't get compiled on the other ones.

src/CMakeLists.txt

@@ -601,6 +601,7 @@ endif()
 
 # Start defining source files for ZDoom
 set( PLAT_WIN32_SOURCES
+	sound/mididevices/music_win_mididevice.cpp
 	win32/eaxedit.cpp
 	win32/critsec.cpp
 	win32/fb_d3d9.cpp
@@ -642,6 +643,7 @@ set( PLAT_UNIX_SOURCES
 	posix/unix/i_specialpaths.cpp
 	posix/unix/iwadpicker_gtk.cpp )
 set( PLAT_OSX_SOURCES
+	sound/mididevices/music_audiotoolbox_mididevice.cpp
 	posix/osx/iwadpicker_cocoa.mm
 	posix/osx/i_specialpaths.mm
 	posix/osx/zdoom.icns )
@@ -910,15 +912,6 @@ set( FASTMATH_SOURCES
 	sound/music_stream.cpp
 	sound/oalsound.cpp
 	sound/sndfile_decoder.cpp
-	sound/mididevices/music_opldumper_mididevice.cpp
-	sound/mididevices/music_opl_mididevice.cpp
-	sound/mididevices/music_pseudo_mididevice.cpp
-	sound/mididevices/music_fluidsynth_mididevice.cpp
-	sound/mididevices/music_softsynth_mididevice.cpp
-	sound/mididevices/music_timidity_mididevice.cpp
-	sound/mididevices/music_wildmidi_mididevice.cpp
-	sound/mididevices/music_win_mididevice.cpp
-	sound/mididevices/music_audiotoolbox_mididevice.cpp
 	sound/mididevices/music_midi_timidity.cpp
 	gl/data/gl_matrix.cpp
 	gl/dynlights/a_dynlight.cpp
@@ -1245,6 +1238,13 @@ set (PCH_SOURCES
 	scripting/zscript/zcc_compile.cpp
 	scripting/zscript/zcc_parser.cpp
 	sfmt/SFMT.cpp
+	sound/mididevices/music_opldumper_mididevice.cpp
+	sound/mididevices/music_opl_mididevice.cpp
+	sound/mididevices/music_pseudo_mididevice.cpp
+	sound/mididevices/music_fluidsynth_mididevice.cpp
+	sound/mididevices/music_softsynth_mididevice.cpp
+	sound/mididevices/music_timidity_mididevice.cpp
+	sound/mididevices/music_wildmidi_mididevice.cpp
 	sound/oplsynth/fmopl.cpp
 	sound/oplsynth/mlopl.cpp
 	sound/oplsynth/mlopl_io.cpp

src/sound/mididevices/music_fluidsynth_mididevice.cpp

@@ -35,9 +35,9 @@
 #ifdef HAVE_FLUIDSYNTH
 
 // HEADER FILES ------------------------------------------------------------
-#include "i_midi_win32.h"
 
 #include "i_musicinterns.h"
+#include "i_system.h"
 #include "templates.h"
 #include "doomdef.h"
 #include "m_swap.h"
@@ -50,6 +50,10 @@
 #ifdef DYN_FLUIDSYNTH
 
 #ifdef _WIN32
+
+// do this without including windows.h for this one single prototype
+extern "C" unsigned __stdcall GetSystemDirectoryA(char *lpBuffer, unsigned uSize);
+
 #ifndef _M_X64
 #define FLUIDSYNTHLIB1	"fluidsynth.dll"
 #define FLUIDSYNTHLIB2	"libfluidsynth.dll"

src/sound/mididevices/music_timidity_mididevice.cpp

@@ -34,8 +34,6 @@
 
 // HEADER FILES ------------------------------------------------------------
 
-#include "i_midi_win32.h"
-
 #include "i_musicinterns.h"
 #include "templates.h"
 #include "doomdef.h"