added freebsd into build.sh

build.sh

@@ -12,8 +12,8 @@ elif [[ "$OSTYPE" == "darwin"* ]]; then
     ./util/build-mac.sh --disable-tests $@
 elif [[ "$OSTYPE" == "msys"* ]]; then
     ./util/build-win.sh --disable-tests $@
-#elif [[ "$OSTYPE" == "freebsd"* ]]; then
-    # placeholder
+elif [[ "$OSTYPE" == "freebsd"* ]]; then
+    MAKE=gmake ./util/build.sh --disable-tests $@
 else
     echo "Unable to detect your OS. What are you using?"
 fi