minor os/2 stuff merged from the bitwiseworks' fork

cmake/sdlplatform.cmake

@@ -48,6 +48,8 @@ macro(SDL_DetectCMakePlatform)
     set(SDL_CMAKE_PLATFORM HAIKU)
   elseif(NINTENDO_3DS)
     set(SDL_CMAKE_PLATFORM N3DS)
+  elseif(OS2)
+    set(SDL_CMAKE_PLATFORM OS2)
   endif()
   if(SDL_CMAKE_PLATFORM)
     set(${SDL_CMAKE_PLATFORM} TRUE)

configure

@@ -28247,7 +28247,7 @@ fi
                 enable_hidapi_libusb=yes
                 require_hidapi_libusb=yes
                 ;;
-           *-*-os2* )
+            *-*-os2* )
                 enable_hidapi_libusb=yes
                 ;;
         esac

configure.ac

@@ -3614,7 +3614,7 @@ CheckHIDAPI()
                 enable_hidapi_libusb=yes
                 require_hidapi_libusb=yes
                 ;;
-           *-*-os2* )
+            *-*-os2* )
                 enable_hidapi_libusb=yes
                 ;;
         esac

src/joystick/os2/SDL_os2joystick.c

@@ -702,10 +702,14 @@ static int joyGetEnv(struct _joycfg * joydata)
 	char tempnumber[5];		/* Temporary place to put numeric texts */
 
 	joyenv = SDL_getenv("SDL_OS2_JOYSTICK");
-	if (joyenv == NULL) return 0;
+	if (joyenv == NULL) {
+		return 0;
+	}
 
 	/* Joystick Environment is defined! */
-	while (*joyenv == ' ' && *joyenv != 0) joyenv++; /* jump spaces... */
+	while (*joyenv == ' ' && *joyenv != 0) {
+		joyenv++; /* jump spaces... */
+	}
 
 	/* If the string name starts with '... get if fully */
 	if (*joyenv == '\'') {

test/CMakeLists.txt

@@ -160,6 +160,8 @@ elseif(WINDOWS)
 elseif(HAVE_X11)
     add_sdl_test_executable(testnative NEEDS_RESOURCES testnative.c testnativex11.c testutils.c)
     target_link_libraries(testnative X11)
+elseif(OS2)
+    add_sdl_test_executable(testnative NEEDS_RESOURCES testnative.c testnativeos2.c testutils.c)
 endif()
 
 add_sdl_test_executable(testoverlay2 NEEDS_RESOURCES testoverlay2.c testyuv_cvt.c testutils.c)