Provide dummy definitions of __driConfig externs

src/mesa/drivers/dri/ffb/ffb_dd.c

@@ -39,6 +39,9 @@
 
 #define FFB_DATE	"20021125"
 
+const char __driConfigOptions[] = { 0 };
+const GLuint __driNConfigOptions = 0;
+
 /* Mesa's Driver Functions */
 
 static const GLubyte *ffbDDGetString(GLcontext *ctx, GLenum name)

src/mesa/drivers/dri/i810/i810context.c

@@ -62,6 +62,9 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 int I810_DEBUG = (0);
 #endif
 
+const char __driConfigOptions[] = { 0 };
+const GLuint __driNConfigOptions = 0;
+
 static const GLubyte *i810GetString( GLcontext *ctx, GLenum name )
 {
    switch (name) {

src/mesa/drivers/dri/i830/i830_context.c

@@ -72,6 +72,10 @@ int I830_DEBUG = (0);
 
 #define DRIVER_DATE                     "20021115"
 
+
+const char __driConfigOptions[] = { 0 };
+const GLuint __driNConfigOptions = 0;
+
 static const GLubyte *i830DDGetString( GLcontext *ctx, GLenum name )
 {
    const char * chipset;

src/mesa/drivers/dri/tdfx/tdfx_context.c

@@ -54,6 +54,8 @@
 #include "tnl/tnl.h"
 #include "tnl/t_pipeline.h"
 
+const char __driConfigOptions[] = { 0 };
+const GLuint __driNConfigOptions = 0;
 
 /*
  * Enable/Disable the extensions for this context.