softpipe: Convert to automake
diff --git a/configure.ac b/configure.ac
index 8fe8403..fa1c48a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2015,6 +2015,7 @@
 		src/gallium/drivers/r300/Makefile
 		src/gallium/drivers/r600/Makefile
 		src/gallium/drivers/rbug/Makefile
+		src/gallium/drivers/softpipe/Makefile
 		src/gallium/drivers/trace/Makefile
 		src/gallium/state_trackers/clover/Makefile
 		src/gallium/targets/Makefile