--- a/Makefile	Fri Jun 22 22:15:49 2007 +0000
+++ b/Makefile	Sun Jun 24 18:26:50 2007 +0000
@@ -843,8 +843,12 @@
   SRCS += sound/win32_s.c
   SRCS += video/win32_v.c
 else
-  SRCS += unix.c
-  SRCS += music/extmidi.c
+  ifdef OS2
+    SRCS += os2.c
+  else
+    SRCS += unix.c
+    SRCS += music/extmidi.c
+  endif
 endif
 
 ifdef OSX

--- a/docs/Readme_OS2.txt	Fri Jun 22 22:15:49 2007 +0000
+++ b/docs/Readme_OS2.txt	Sun Jun 24 18:26:50 2007 +0000
@@ -50,6 +50,9 @@
 If I hear enough responses that both music and sound work together (it might
 just be my system), I'll have the defaults changed.
 
+Please note also that the GCC version does not currently support the MCI MIDI
+system.
+
 A NOTE ABOUT DEDICATED MULTIPLAYER SERVERS
 ------------------------------------------
 
@@ -74,9 +77,17 @@
 
    http://www.mozilla.org/ports/os2/gccsetup.html
 
+Alternatively, Paul Smedley's ready-to-go GCC build environment has been known to
+successfully build the game:
+
+   http://www.smedley.info/os2ports/index.php?page=build-environment
+
 To build, you should, if your environment is set up well enough, be able to just
 type `./configure' (or `sh configure' if you're using the OS/2 shell) and `make'.
 
+You may have to manually specify `--os OS2' on the configure command line, as
+configure cannot currently detect OS/2 manually.
+
 A note on Open Watcom
 ---------------------
 
@@ -122,4 +133,4 @@
 
 Thanks to Paul Smedley for his help with getting OpenTTD to compile under GCC on OS/2.
 
-- Owen Rudge, 8th January 2007
+- Owen Rudge, 24th June 2007

--- a/driver.c	Fri Jun 22 22:15:49 2007 +0000
+++ b/driver.c	Sun Jun 24 18:26:50 2007 +0000
@@ -58,7 +58,7 @@
 	M("qt",      "QuickTime MIDI Driver",   &_qtime_music_driver),
 #endif
 #ifdef UNIX
-#if !defined(__MORPHOS__) && !defined(__AMIGA__)
+#if !defined(__MORPHOS__) && !defined(__AMIGA__) && !defined(__OS2__)
 	M("extmidi", "External MIDI Driver",    &_extmidi_music_driver),
 #endif
 #endif

--- a/os2.c	Fri Jun 22 22:15:49 2007 +0000
+++ b/os2.c	Sun Jun 24 18:26:50 2007 +0000
@@ -134,7 +134,7 @@
 	}
 }
 
-void ShowInfo(const unsigned char *str)
+void ShowInfo(const char *str)
 {
 	HAB hab;
 	HMQ hmq;