Hello, I am new to this forum. I am using the Boost Library in my open source application and I am facing lot of compilation issues when trying to compile on MSVC 6.0, but the same works well in Cygwin. Most of the compilation errors are based on the redefinition. The errors is as below error C2371: 'XXX' : redefinition; different basic types Pls let me know how to overcome the same. All the redefinitions are the clashes with that of the MSVC compiler includes. Eg: Boost has definition for 'round_toward_zero' in e:\Application \boost\detail\limits.hpp(58) : see declaration of 'round_indeterminate' c:\program files\microsoft visual studio\vc98\include\limits(28) : error C2371: 'round_toward_zero' : redefinition; different basic types Regards, Ranganath