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Oracle® Solaris 64-bit Developer's Guide

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Updated: March 2019

4.6 Checklist for Converting to 64-bit

    The following checklist might be helpful to convert your code to 64-bit:

  • Read this entire document with an emphasis on the Guidelines for Converting to LP64 Data Type Model.

  • Review all data structures and interfaces to verify that these are still valid in the 64-bit environment.

  • Include <sys/types.h> in your code to pull in the _ILP32 or _LP64 definitions as well as many basic derived types.

  • Move function prototypes and external declarations with non-local scope to headers and include these headers in your code.

  • Run lint using –errchk=longptr64 and review each warning individually, being aware that not all warnings require a change to the code. Depending on the resulting changes, you might also want to run lint again, both in 32-bit and 64-bit modes.

  • Compile code as both 32-bit and 64-bit, unless the application is being provided only as 64-bit.

  • Test the application by executing the 32-bit and the 64-bit versions on the 64-bit operating system. The output of a 32-bit binary should be the same as the output of the 64-bit binary.