diff -up INCHI-1-API/INCHI_API/gcc_so_makefile/makefile.r INCHI-1-API/INCHI_API/gcc_so_makefile/makefile
--- INCHI-1-API/INCHI_API/gcc_so_makefile/makefile.r 2010-02-02 02:24:54.000000000 +0100
+++ INCHI-1-API/INCHI_API/gcc_so_makefile/makefile 2010-07-08 01:07:51.000000000 +0200
@@ -1,5 +1,5 @@
# Comment out the next line to create so/dll only
-CREATE_MAIN = 1
+#CREATE_MAIN = 1
ifdef windir
# Under Win32/MinGW/gcc to add functions compliant to Pascal/stdcall calling
@@ -84,7 +84,7 @@ endif
# === C Compiler Options =======
ifndef C_OPTIONS
- C_OPTIONS = -ansi -O3 -c
+ C_OPTIONS = -ansi $(OPTFLAGS) -c
ifndef windir
ifdef ISLINUX
ifndef C_SO_OPTIONS