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--- a/src/utils/Makefile
+++ b/src/utils/Makefile
@@ -47,7 +47,7 @@
 
 EXECMD_OBJS= trexecmd.o $(BIGLIB)
 trexecmd : $(EXECMD_OBJS)
-	$(CXX) $(ALL_CXXFLAGS) -o trexecmd $(EXECMD_OBJS) $(LIBICONV)
+	$(CXX) $(ALL_CXXFLAGS) -o trexecmd $(EXECMD_OBJS) $(LIBICONV) $(LIBSYS)
 trexecmd.o : execmd.cpp execmd.h
 	$(CXX) -o trexecmd.o -c $(ALL_CXXFLAGS) -DTEST_EXECMD execmd.cpp