Thanks Ager and Zhirov, the macros work!

StackOverflow<http://stackoverflow.com/questions/7759667/can-pascal-units-be-compiled-as-executables/7774138#7774138>

RosettaCode <http://rosettacode.org/wiki/Scripted_main#Free_Pascal>

Cheers,

Andrew Pennebaker
www.yellosoft.us

On Fri, Oct 14, 2011 at 2:33 PM, Vladimir Zhirov <vvzh.li...@gmail.com>wrote:

> Andrew Pennebaker wrote:
> > Thanks, the conditional execution code helps a lot. Does
> > $IFDEF look for an environment or Makefile variable?
>
> No, it looks for previously defined variables. You can define
> variables using -dMyVar command line switch when running the
> compiler, or {$DEFINE MyVar} in source code. It is possible
> to use the first approach in makefiles.
>
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>
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