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Line 6: A simple format directive in the source allows for easy cross-compilation to any other supported system, for instance the Linux binaries of Phix are always compiled on Windows by throwing the following at "p -c -norun p32.exu" (with a similar p64.exu for 64bit, and the formats PE32 and PE64 for the reverse trick): <!--<lang Phix>(phixonline)--> <span style="color: #000000;">format</span> <span style="color: #000000;">ELF32</span> Line 12: <!--</lang>--> The platform() and machine_bits() builtins can be explictly used as runtime tests to vary code by platform. The compiler tries hard to avoid ~~omitting~~emitting unnecessary binary, which is likely to be more successful when those routines are used as plainly as possible, without any and/or parts to the conditional. Likewise #ilASM{} aka inline assembly can contain guards such as [32] to emit (only) the relevant code for different target architectures, see [[Conditional_structures#ilASM]] and [[Pragmatic_directives#Phix]] for more details and examples.

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