--- a/src/lib/function/Makefile.am
+++ b/src/lib/function/Makefile.am
@@ -3,7 +3,8 @@
 libfunc_la_CPPFLAGS = -I$(top_srcdir)/src/include
 
 libfunc_la_SOURCES = Function.cc ScalarFunction.cc LinkFunction.cc	\
-VectorFunction.cc ArrayFunction.cc FunctionPtr.cc FuncTab.cc FuncError.cc
+VectorFunction.cc ArrayFunction.cc FunctionPtr.cc FuncTab.cc FuncError.cc \
+DPQFunction.cc DFunction.cc PFunction.cc QFunction.cc
 
 check_LTLIBRARIES = libfuntest.la
 libfuntest_la_SOURCES = testfun.cc