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Most Perl code can be ported to MacPerl with a few minor adjustments, and in fact even those are often not necessary if authors follow a few guidelines:
- Do not assume that \n and \012 are identical, and do not use them indiscriminately: Text files should follow the conventions of the host system, so lines should be terminated with \n. Data in network protocols (Telnet, HTTP, SMTP) follows a host independent standard, so lines should be terminated with hard coded characters, usually \015\012.
- Do not assume that path components are separated with '/', nor that several path separators in a row mean the same as one. Use libraries like File::Basename to avoid dependencies on path name syntax.
- Minimize the use of system(), pipes, and backquotes. Use libraries like Cwd and File::Copy instead.
- Keep your build and installation systems as portable as possible. Rely on MakeMaker's built-in features and avoid hardcoding pieces of UNIX Makefiles into your Makefile.pl.
- Do not assume that system time is measured from January 1, 1970.
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