fix 'multiple definition of' linker error

Fix for FTBFS due to -fno-common on GCC 10.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>

src/geode.h

@@ -343,7 +343,7 @@ typedef struct _geodeRec {
 
 /* option flags are self-explanatory */
 #ifdef HAVE_LX
-enum {
+enum LX_GeodeOpts {
     LX_OPTION_SW_CURSOR,
     LX_OPTION_HW_CURSOR,
     LX_OPTION_NOCOMPRESSION,
@@ -357,11 +357,11 @@ enum {
     LX_OPTION_FBSIZE,
     LX_OPTION_PANEL_MODE,
     LX_OPTION_DONT_PROGRAM
-} LX_GeodeOpts;
+};
 #endif
 
 #ifdef HAVE_GX
-enum {
+enum GX_GeodeOpts {
     GX_OPTION_SW_CURSOR,
     GX_OPTION_HW_CURSOR,
     GX_OPTION_NOCOMPRESSION,
@@ -378,7 +378,7 @@ enum {
     GX_OPTION_FBSIZE,
     GX_OPTION_PANEL_GEOMETRY,
     GX_OPTION_DONT_PROGRAM
-} GX_GeodeOpts;
+};
 #endif
 
 /* geode_dcon.c */

src/gx_driver.c

@@ -78,7 +78,7 @@
 
 extern OptionInfoRec GX_GeodeOptions[];
 
-unsigned char *XpressROMPtr;
+extern unsigned char *XpressROMPtr;
 
 static inline void
 gx_enable_dac_power(void)

src/gx_video.c

@@ -112,7 +112,7 @@ void GXSetVideoPosition(int x, int y, int width, int height,
 
 extern void GXAccelSync(ScrnInfoPtr pScrni);
 
-int DeltaX, DeltaY;
+extern int DeltaX, DeltaY;
 
 unsigned long graphics_lut[256];
 static int lutflag = 0;

src/lx_driver.c

@@ -74,7 +74,7 @@
 
 extern OptionInfoRec LX_GeodeOptions[];
 
-unsigned char *XpressROMPtr;
+extern unsigned char *XpressROMPtr;
 
 static Bool
 LXSaveScreen(ScreenPtr pScrn, int mode)