diff --git a/configure.ac b/configure.ac
index 7f78afcad..cec4125fa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -152,6 +152,7 @@ AC_OUTPUT(Makefile                                                         \
 		   ext/f2c_libs/Makefile      \
 		   ext/f2c_blas/Makefile      \
 		   ext/f2c_lapack/Makefile    \
+		   ext/libexecstream/Makefile    \
 		   ext/cvode/Makefile         \
 		   cantera.pc)                                   
 
diff --git a/ext/Makefile.am b/ext/Makefile.am
index d415865f8..663468361 100644
--- a/ext/Makefile.am
+++ b/ext/Makefile.am
@@ -1,4 +1,4 @@
-SUBDIRS =  f2c_libs f2c_blas f2c_lapack cvode
+SUBDIRS =  f2c_libs f2c_blas f2c_lapack cvode libexecstream
 
 # header file accumulation                                                                                                 
 all:
diff --git a/src/base/Makefile.am b/src/base/Makefile.am
index 463ea07c8..93ef007ed 100644
--- a/src/base/Makefile.am
+++ b/src/base/Makefile.am
@@ -1,4 +1,4 @@
-h_sources               = LogPrintCtrl.h
+h_sources               = LogPrintCtrl.h application.h units.h
 
 cc_sources              = ct2ctml.cpp ctml.cpp plots.cpp                   \
 			  stringUtils.cpp xml.cpp clockWC.cpp              \
@@ -6,7 +6,10 @@ cc_sources              = ct2ctml.cpp ctml.cpp plots.cpp                   \
 			  checkFinite.cpp application.cpp ctexceptions.cpp \
 	                  global.cpp
 
-AM_CPPFLAGS             = -I$(top_builddir) -I$(top_builddir)/include
+AM_LDFLAGS              = -L$(top_builddir)/build/lib/ 
+LIBS                    = -lexecstream
+
+AM_CPPFLAGS             = -I$(top_builddir) -I$(top_builddir)/include -I$(top_builddir)/ext/libexecstream
 AM_CXXFLAGS             = $(AM_CPPFLAGS)
 
 lib_LTLIBRARIES         = $(top_builddir)/build/lib/libctbase.la
diff --git a/test_problems/cathermo/DH_graph_1/Makefile.am b/test_problems/cathermo/DH_graph_1/Makefile.am
index 3fc9c69bd..915d64b02 100644
--- a/test_problems/cathermo/DH_graph_1/Makefile.am
+++ b/test_problems/cathermo/DH_graph_1/Makefile.am
@@ -1,10 +1,11 @@
 INC                  = -I. -I$(top_builddir)/include -I$(top_builddir)/test_problems/shared
+INC                 += -I$(top_builddir)/ext/libexecstream
 AM_CPPFLAGS          = $(INC)
 AM_CXXFLAGS          = $(AM_CPPFLAGS)
 
 LINK                 = -loneD -lzeroD -lequil -lkinetics -ltransport -lthermo 
 LINK                += -lctnumerics -lctmath -ltpx -lctspectra -lconverters -lctbase -lcvode 
-LINK                += -lctlapack -lctblas -lctf2c -lm -lstdc++
+LINK                += -lctlapack -lctblas -lctf2c -lm -lstdc++ -lexecstream
 #-lctcxx -luser 
 AM_LDFLAGS           = -L$(top_builddir)/build/lib/ 
 LIBS                 =  $(LINK)