diff --git a/build/make/configure.sh b/build/make/configure.sh
index 7234b7974..ac99cf561 100755
--- a/build/make/configure.sh
+++ b/build/make/configure.sh
@@ -624,6 +624,10 @@ process_common_toolchain() {
 
     # Handle Solaris variants. Solaris 10 needs -lposix4
     case ${toolchain} in
+        sparc-solaris-*)
+            add_extralibs -lposix4
+            add_cflags "-DMUST_BE_ALIGNED"
+            ;;
         *-solaris-*)
             add_extralibs -lposix4
             ;;