diff --git a/cpp/Makefile.am b/cpp/Makefile.am
index a772ea3e4..6be36983e 100644
--- a/cpp/Makefile.am
+++ b/cpp/Makefile.am
@@ -266,13 +266,22 @@ include_HEADERS = $(headers)
 AM_CXXFLAGS += -I.. 
 AM_LDFLAGS = -L../CppUnitLite -lCppUnitLite $(BOOST_LDFLAGS) $(boost_serialization) #-L. -lgtsam
 
+#######################
+# GSL/ATLAS inclusion
+#######################
+
 # TO ENABLE GSL AND ATLAS, uncomment this part!
-# Direct call for gsl and atlas
 # AM_LDFLAGS += -lgsl -lcblas -latlas 
 # libgtsam_la_LDFLAGS += -lgsl -lcblas -latlas
 # AM_CXXFLAGS += -DGSL
 # libgtsam_la_CPPFLAGS += -DGSL
 
+# TO ENABLE JUST GSL, uncomment this part!
+# AM_LDFLAGS += -lgsl -lgslcblas
+# libgtsam_la_LDFLAGS += -lgsl -lgslcblas
+# AM_CXXFLAGS += -DGSL
+# libgtsam_la_CPPFLAGS += -DGSL
+
 # GSL using ATLAS
 # if GSL
 #	AM_CXXFLAGS += -DGSL