XFree86: Fix build with DGA disabled

It's optional, so we might as well work when it's disabled.

Signed-off-by: Daniel Stone <daniel@fooishbar.org>

hw/xfree86/common/Makefile.am

@@ -13,6 +13,10 @@ if XF86VIDMODE
 XF86VMODE_SDK = vidmodeproc.h
 endif
 
+if DGA
+DGASOURCES = xf86DGA.c
+endif
+
 XISOURCES = xf86Xinput.c xisb.c
 XISDKINCS = xf86Xinput.h xisb.h
 RANDRSOURCES = xf86RandR.c

hw/xfree86/common/xf86Init.c

@@ -1220,7 +1220,9 @@ InitOutput(ScreenInfo *pScreenInfo, int argc, char **argv)
 	 * don't, will wrap them.
 	 */
 	xf86Screens[i]->EnableDisableFBAccess = xf86EnableDisableFBAccess;
+#ifdef XFreeXDGA
 	xf86Screens[i]->SetDGAMode = xf86SetDGAMode;
+#endif
 	xf86Screens[i]->DPMSSet = NULL;
 	xf86Screens[i]->LoadPalette = NULL;
 	xf86Screens[i]->SetOverscan = NULL;

hw/xfree86/modes/Makefile.am

@@ -1,19 +1,23 @@
 noinst_LTLIBRARIES = libxf86modes.la
 
+if DGA
+DGA_SRCS = xf86DiDGA.c
+endif
+
 libxf86modes_la_SOURCES = \
 	xf86Crtc.c \
 	xf86Crtc.h \
 	xf86Cursors.c \
 	xf86cvt.c \
 	xf86gtf.c \
-	xf86DiDGA.c \
 	xf86EdidModes.c \
 	xf86Modes.c \
 	xf86Modes.h \
 	xf86RandR12.c \
 	xf86RandR12.h \
 	xf86Rename.h \
-	xf86Rotate.c
+	xf86Rotate.c \
+        $(DGA_SRCS)
 
 INCLUDES = $(XORG_INCS) -I$(srcdir)/../ddc -I$(srcdir)/../i2c \
 	   -I$(srcdir)/../loader -I$(srcdir)/../rac -I$(srcdir)/../parser \

hw/xfree86/modes/xf86Crtc.h

@@ -825,6 +825,7 @@ xf86OutputGetEDID (xf86OutputPtr output, I2CBusPtr pDDCBus);
  * Initialize dga for this screen
  */
 
+#ifdef XFreeXDGA
 extern _X_EXPORT Bool
 xf86DiDGAInit (ScreenPtr pScreen, unsigned long dga_address);
 
@@ -834,6 +835,7 @@ xf86DiDGAInit (ScreenPtr pScreen, unsigned long dga_address);
 
 extern _X_EXPORT Bool
 xf86DiDGAReInit (ScreenPtr pScreen);
+#endif
 
 /*
  * Set the subpixel order reported for the screen using

hw/xfree86/modes/xf86RandR12.c

@@ -248,7 +248,9 @@ xf86RandR12GetInfo (ScreenPtr pScreen, Rotation *rotations)
     {
 	xf86ProbeOutputModes (scrp, 0, 0);
 	xf86SetScrnInfoModes (scrp);
+#ifdef XFreeXDGA
 	xf86DiDGAReInit (pScreen);
+#endif
     }
 
     for (mode = scrp->modes; ; mode = mode->next)
@@ -1317,7 +1319,9 @@ xf86RandR12GetInfo12 (ScreenPtr pScreen, Rotation *rotations)
 	return TRUE;
     xf86ProbeOutputModes (pScrn, 0, 0);
     xf86SetScrnInfoModes (pScrn);
+#ifdef XFreeXDGA
     xf86DiDGAReInit (pScreen);
+#endif
     return xf86RandR12SetInfo12 (pScreen);
 }