There are several subsystems that need IOKit linked in on Mac OS X, so handle

 cases where one or more of them are disabled.

--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%402302

configure.in

@@ -2462,8 +2462,8 @@ case "$host" in
         if test x$enable_joystick = xyes; then
             AC_DEFINE(SDL_JOYSTICK_IOKIT)
             SOURCES="$SOURCES $srcdir/src/joystick/darwin/*.c"
-            EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,IOKit"
             have_joystick=yes
+            need_iokit_framework=yes
         fi
         # Set up files for the cdrom library
         if test x$enable_cdrom = xyes; then
@@ -2483,6 +2483,7 @@ case "$host" in
         SDL_LIBS="-lSDLmain $SDL_LIBS"
         if test x$enable_video_cocoa = xyes; then
             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Cocoa"
+            need_iokit_framework=yes
         fi
         if test x$enable_video_carbon = xyes -o x$enable_video_cocoa = xyes; then
             # The Cocoa backend still needs Carbon, and the YUV code QuickTime
@@ -2493,6 +2494,10 @@ case "$host" in
         if test x$enable_audio = xyes -o x$enable_cdrom = xyes; then
             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,AudioToolbox -Wl,-framework,AudioUnit"
         fi
+        # Some subsystems reference IOKit...
+        if test x$need_iokit_framework = xyes; then
+            EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,IOKit"
+        fi
         ;;
     *-*-mint*)
         ARCH=mint