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Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.

Backward Compatibility

For compatibility between product versions, the library OLDNAMES.LIB maps old names to new names. For instance, open maps to _open. You must explicitly link with OLDNAMES.LIB only when you compile with the following combinations of command-line options:

  • /Zl (omit default library name from object file) and /Ze (the default — use Microsoft extensions)

  • /link (linker-control), /NOD (no default-library search), and /Ze

For more information about compiler command-line options, see Compiler Reference.

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