I am producing some multiple platform code which does have some platform dependent items that I would like to conditionally compile in. The question is, how do I determine what the appropriate preprocessor variable that would indicate for example, being on a Linux platform vs an AIX platform. For example there are some socket options that are platform specific, so I would like to have code that looks like : #if defined(_AIX_) int option = TCP_NODELAYACK; #else if defined(_LINUX_) int option = TCP_QUICKACK; #else #error Unsupported platform, please determine proper option and update code. #endif Thanks, Dale Pennington
