HELP on UDF in version 6.1.22

hedonists

Our system just upgraded to version 6.1.22. I found the compiled UDF interface is kind of different with previous version. My questions are:

1. In the makefile.udf, there is one more line. Can I leave it blank?

# Precompiled User Object files (for example .o files from .f sources) USER_OBJECTS=

2. When I define a compiled UDF, I have define a source file and Head files. Under which directory should I put these files?

3. There is a "build" button. But I have already built using the makefile "FLUENT_ARCH=***"command, why do I need to build again?

4. There is also a "load" button. I tried to put my lib name in it and load it, but it said

Opening library "lib6122"... Error: open_udf_library: No such file or directory Error Object: #f

Can someone help me this out? If you have a manual of FLUENT 6.1.22 UDF, please let me know.

Thanks a lot.