diff --git a/tools/gccas/Makefile b/tools/gccas/Makefile
index 56f2480b078..26e2c460631 100644
--- a/tools/gccas/Makefile
+++ b/tools/gccas/Makefile
@@ -2,6 +2,6 @@ LEVEL = ../..
 
 TOOLNAME = gccas
 USEDLIBS = asmparser bcwriter transforms ipo scalaropts analysis \
-           target.a transformutils ipa vmcore support.a
+           target.a transformutils ipa datastructure vmcore support.a
 
 include $(LEVEL)/Makefile.common