diff -rup sqlheavy-0.1.1-org/configure.ac sqlheavy-0.1.1/configure.ac
--- sqlheavy-0.1.1-org/configure.ac	2012-04-30 14:40:31.000000000 +0800
+++ sqlheavy-0.1.1/configure.ac	2015-10-22 15:49:22.821930100 +0800
@@ -69,7 +69,7 @@ AC_SUBST(GMODULE_LIBS)
 PKG_CHECK_MODULES(SQLITE3, sqlite3 >= $SQLITE3_REQUIRED)
 AC_SUBST(SQLITE3_CFLAGS)
 AC_SUBST(SQLITE3_LIBS)
-VALA_PACKAGE=libvala-0.16
+VALA_PACKAGE=libvala-0.34
 PKG_CHECK_MODULES(VALA, $VALA_PACKAGE >= $VALA_REQUIRED)
 AC_SUBST(VALA_PACKAGE)
 AC_SUBST(VALA_CFLAGS)
@@ -114,6 +114,5 @@ AC_CONFIG_FILES([Makefile
                  gtk/sqlheavygtk-$SQLHEAVY_API_VERSION.deps
                  sqlheavy/Makefile
                  sqlheavy-$SQLHEAVY_API_VERSION.pc
-                 sqlheavygtk-$SQLHEAVY_API_VERSION.pc
-                 utils/Makefile])
+                 sqlheavygtk-$SQLHEAVY_API_VERSION.pc])
 AC_OUTPUT
diff -rup sqlheavy-0.1.1-org/Makefile.am sqlheavy-0.1.1/Makefile.am
--- sqlheavy-0.1.1-org/Makefile.am	2012-04-30 14:31:00.000000000 +0800
+++ sqlheavy-0.1.1/Makefile.am	2015-10-22 15:56:23.703930100 +0800
@@ -4,7 +4,6 @@ SUBDIRS = \
 	sqlheavy \
 	gtk \
 	examples \
-	utils \
 	docs \
 	data \
 	$(NULL)
diff -rup sqlheavy-0.1.1-org/Makefile.in sqlheavy-0.1.1/Makefile.in
--- sqlheavy-0.1.1-org/Makefile.in	2012-04-30 14:48:24.000000000 +0800
+++ sqlheavy-0.1.1/Makefile.in	2015-10-22 15:59:59.598930100 +0800
@@ -288,7 +288,6 @@ SUBDIRS = \
 	sqlheavy \
 	gtk \
 	examples \
-	utils \
 	docs \
 	data \
 	$(NULL)
diff -rup sqlheavy-0.1.1-org/sqlheavy/Makefile.am sqlheavy-0.1.1/sqlheavy/Makefile.am
--- sqlheavy-0.1.1-org/sqlheavy/Makefile.am	2012-04-30 14:31:00.000000000 +0800
+++ sqlheavy-0.1.1/sqlheavy/Makefile.am	2015-10-22 15:54:41.399930100 +0800
@@ -72,6 +72,7 @@ libsqlheavy@SQLHEAVY_API_VERSION@_la_CFL
 	$(NULL)
 
 libsqlheavy@SQLHEAVY_API_VERSION@_la_LDFLAGS = \
+	-no-undefined \
 	$(GIO_LIBS) \
 	$(GLIB_LIBS) \
 	$(GMODULE_LIBS) \