diff --git a/base-linux/lib/mk/x86_64/base.mk b/base-linux/lib/mk/x86_64/base.mk
index 3a54314ce6..aae6655f00 100644
--- a/base-linux/lib/mk/x86_64/base.mk
+++ b/base-linux/lib/mk/x86_64/base.mk
@@ -1,6 +1,6 @@
 include $(REP_DIR)/lib/mk/base.inc
 
-LIBS += startup
+LIBS += startup cxx
 
 SRC_CC += thread.cc thread_linux.cc