Add option to avoid building GX support

One of the checks for HAVE_GX appeared to be in the wrong place. Once it
is in the right place, a configure option can be used to not set HAVE_GX
and avoid compiling the associated files.

Signed-off-by: Connor Behan <connor.behan@gmail.com>

configure.ac

@@ -72,6 +72,20 @@ AC_ARG_ENABLE(geodegx-panel,
 	      [ PANEL_CPPFLAGS=-DPNL_SUP ])
 AC_SUBST(PANEL_CPPFLAGS)
 
+# Define a configure option to disable GX altogether
+AC_ARG_ENABLE(geodegx,
+	      AS_HELP_STRING([--disable-geodegx],
+	                     [Disable support for the Geode GX and only build LX]),
+	      [geodegx=no],
+	      [geodegx=yes])
+
+if test "x$geodegx" != "xno" ; then
+    BUILD_GX=yes
+    DEVICE_CPPFLAGS=-DHAVE_GX
+fi
+AM_CONDITIONAL(BUILD_GX, [test "x$BUILD_GX" = xyes])
+AC_SUBST(DEVICE_CPPFLAGS)
+
 # Define a configure option to enable/disable ztv
 AC_ARG_ENABLE(ztv,
 	AS_HELP_STRING([--enable-ztv],

src/Makefile.am

@@ -29,7 +29,7 @@ AM_CPPFLAGS = 				\
 	-I$(top_srcdir)/src/gfx 	\
 	-I$(top_srcdir)/src/panel	\
 	$(PANEL_CPPFLAGS)		\
-	-DHAVE_GX			\
+	$(DEVICE_CPPFLAGS)		\
 	-DHAVE_LX			\
 	-DOPT_ACCEL
 
@@ -53,13 +53,6 @@ geode_drv_la_SOURCES =		\
 	geode.h			\
 	geode_msr.c		\
 	geode_pcirename.h	\
-	gx_accel.c		\
-	gx_cursor.c		\
-	gx_driver.c		\
-	gx_randr.c		\
-	gx_regacc.c		\
-	gx_rotate.c		\
-	gx_video.c		\
 	lx_cursor.c		\
 	lx_display.c		\
 	lx_driver.c		\
@@ -144,6 +137,19 @@ EXTRA_DIST =			\
         gx_vga.c		\
         lx_vga.c
 
+if BUILD_GX
+
+geode_drv_la_SOURCES +=         \
+	gx_accel.c		\
+	gx_cursor.c		\
+	gx_driver.c		\
+	gx_randr.c		\
+	gx_regacc.c		\
+	gx_rotate.c		\
+	gx_video.c
+
+endif BUILD_GX
+
 if BUILD_ZTV
 
 ztv_drv_la_LTLIBRARIES = ztv_drv.la

src/geode.h

@@ -112,7 +112,6 @@ typedef struct _CIM_DISPLAYTIMING {
 
 #endif
 
-#ifdef HAVE_GX
 extern void gfx_write_reg32(int offset, int data);
 extern void gfx_write_reg16(int offset, short data);
 extern void gfx_write_reg8(int offset, char data);
@@ -151,8 +150,6 @@ typedef struct tag_GFX_DISPLAYTIMING {
     unsigned short wPolarity;
 } GFX_DISPLAYTIMING;
 
-#endif
-
 typedef struct _VESARec {
     xf86Int10InfoPtr pInt;
 } VESARec;
@@ -255,6 +252,7 @@ typedef struct _geodeRec {
 
     /* ===== GX specific items ===== */
 
+#ifdef HAVE_GX
     /* Flags */
     Bool Panel;
 
@@ -310,6 +308,7 @@ typedef struct _geodeRec {
     int video_offset;
     ScrnInfoPtr video_scrnptr;
     BOOL OverlayON;
+#endif
 } GeodeRec, *GeodePtr;
 
 /* option flags are self-explanatory */