Dear friends,
 For a research project we have tried to install RegCM 4.3.5.6 on MAC OSX 10.7. and in that process after configuration while making, error was showed and the file is attached for reference. But installation was success in Linux machine. Can any one suggest the solution for this error. 
Awaiting for your suggestions.
Thanks and regards,
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D. Rajalakshmi,
Research Associate,
Agro Climate Research Centre,
Tamil Nadu Agricultural University,
Coimbatore.