diff --git a/Cantera/fortran/src/Makefile.in b/Cantera/fortran/src/Makefile.in
index 07be698e5..1b64ea989 100644
--- a/Cantera/fortran/src/Makefile.in
+++ b/Cantera/fortran/src/Makefile.in
@@ -20,7 +20,7 @@ CXX_OBJS = fct.o fctxml.o
 INTERFACE_MODULE_OBJS = fct_interface.o fctxml_interface.o 
 
 USER_MODULE_OBJS = cantera_xml.o cantera_thermo.o cantera_kinetics.o \
-                   cantera_transport.o cantera_funcs.o cantera.o
+                   cantera_transport.o cantera_iface.o cantera_funcs.o cantera.o
 
 MODULES = $(INTERFACE_MODULE_OBJS:_interface.o=.mod) $(USER_MODULE_OBJS)
 OBJS = $(CXX_OBJS) $(USER_MODULE_OBJS)
diff --git a/preconfig b/preconfig
index 65d52d336..5f76f8b47 100755
--- a/preconfig
+++ b/preconfig
@@ -338,7 +338,7 @@ CXX=${CXX:=g++}
 CC=${CC:=gcc}
 
 # C++ compiler flags
-CXXFLAGS=${CXXFLAGS:="-O0 -g -Wall"}
+CXXFLAGS=${CXXFLAGS:="-O3 -Wall"}
 
 # the C++ flags required for linking. Uncomment if additional flags
 # need to be passed to the linker.
diff --git a/test_problems/spectroscopy/.cvsignore b/test_problems/spectroscopy/.cvsignore
new file mode 100644
index 000000000..f3c7a7c5d
--- /dev/null
+++ b/test_problems/spectroscopy/.cvsignore
@@ -0,0 +1 @@
+Makefile