Re: Distinguish OS at compile time
I need to write somethign like
Any Macro that can do the job? Should it be compiler specific?
In addition to Robbie Hatley's replies, see <url:
http://predef.sourceforge.net/preos.html> for a list of such macros.
Also, an alternative and often better scheme is to provide platform
specific implementation files, place them in their own per-platform
directory, and select the relevant one at build-time or even
installation time. This moves the issue from being a language issue to
being a build-tools or installation-tools issue, and provides more clean
and maintainable code. However, that doesn't work nearly so well with
compiler-specific code, because you don't want to duplicate essentially
the same code (which would reduce instead of increase maintainability).
Thus, for compiler-specific code some macros like those above can be
necessary, although their effect should (ideally) be centralized, not
peppered around in source files; relevant compiler-detection macros are
listed at <url: http://predef.sourceforge.net/precomp.html>.
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
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