MesaLib: enable for lemote

No render support for siliconmotion, so use swraster driver. Also the
obligatory SAREA fix is needed here.

package/MesaLib/Makefile

@@ -23,11 +23,22 @@ include $(TOPDIR)/mk/package.mk
 
 $(eval $(call PKG_template,MESALIB,mesalib,$(PKG_VERSION)-${PKG_RELEASE},${PKG_DEPENDS},${PKG_DESCR},${PKG_SECTION}))
 
+ifeq (${ADK_LINUX_X86_IBMX40},y)
+DRI_DRIVERS:=i810
+endif
+
+# Lemote's SMI712 is not directly supported by Mesa,
+# and at least some SIS driver fails to build when
+# keeping the driver auto-selection intact.
+ifeq (${ADK_LINUX_MIPS64_LEMOTE},y)
+DRI_DRIVERS:=swrast
+endif
+
 CONFIGURE_ARGS+=	--disable-static \
 			--disable-gallium \
 			--disable-glw \
 			--with-driver=dri \
-			--with-dri-drivers=i810 \
+			--with-dri-drivers=${DRI_DRIVERS} \
 			--without-demos
 
 XAKE_FLAGS+=		APP_CC=${HOSTCC} HOST_CC=${HOSTCC}
@@ -48,8 +59,12 @@ pre-configure:
 	${MAKE} -C ${WRKBUILD}/src/glsl clean
 
 post-install:
-	$(INSTALL_DIR) $(IDIR_MESALIB)/usr/lib
+	$(INSTALL_DIR) $(IDIR_MESALIB)/usr/lib/dri
 	$(CP) $(WRKINST)/usr/lib/libGL*.so* \
 		$(IDIR_MESALIB)/usr/lib
+ifeq (${ADK_LINUX_MIPS64_LEMOTE},y)
+	$(INSTALL_BIN) $(WRKINST)/usr/lib/dri/swrast_dri.so \
+		${IDIR_MESALIB}/usr/lib/dri/
+endif
 
 include ${TOPDIR}/mk/pkg-bottom.mk

package/MesaLib/patches/patch-include_GL_internal_sarea_h

@@ -0,0 +1,12 @@
+	fix for loongson
+--- Mesa-7.8.1.orig/include/GL/internal/sarea.h	2010-02-05 01:10:39.000000000 +0100
++++ Mesa-7.8.1/include/GL/internal/sarea.h	2010-06-12 19:13:41.417809541 +0200
+@@ -42,6 +42,8 @@
+ /* SAREA area needs to be at least a page */
+ #if defined(__alpha__)
+ #define SAREA_MAX 			0x2000
++#elif defined(__mips__)
++#define SAREA_MAX			0x4000
+ #elif defined(__ia64__)
+ #define SAREA_MAX			0x10000		/* 64kB */
+ #else