diff --git a/ext/lapack/Makefile.in b/ext/lapack/Makefile.in
index cd8a109f9..48b38590c 100755
--- a/ext/lapack/Makefile.in
+++ b/ext/lapack/Makefile.in
@@ -79,8 +79,12 @@ ifeq ($(do_ranlib),1)
 	@RANLIB@ $(LAPACKLIB)
 endif
 
+#
+# Right now g77 is not a known compiler to PURIFY. Why,
+# I don't know. Taking the instrumentation out for now
+#
 %.o : %.f
-	$(PURIFY) @F77@ -c $<  $(F77_INCLUDES) $(F_FLAGS) 
+	 @F77@ -c $<  $(F77_INCLUDES) $(F_FLAGS) 
 
 $(OBJS): Makefile
 
diff --git a/ext/math/Makefile.in b/ext/math/Makefile.in
index b952cefe8..67407e24f 100755
--- a/ext/math/Makefile.in
+++ b/ext/math/Makefile.in
@@ -57,9 +57,11 @@ endif
 
 %.o : %.cpp
 	$(PURIFY) @CXX@ -c $< @DEFS@  @CXXFLAGS@ @PIC@ $(INCLUDES)
-
+#
+# Right now g77 is not known to PURIFY. Why I don't know.
+#
 %.o : %.f
-	$(PURIFY) @F77@ -c $< $(F_FLAGS)
+	@F77@ -c $< $(F_FLAGS)
 
 $(OBJS): Makefile