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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: chopping Ada source that have preprocessor symbols in them
Date: Sat, 09 Feb 2013 20:15:35 +0000
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Date: 2013-02-09T20:15:35+00:00
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Georg Bauhaus <rm.dash-bauhaus@futureapps.de> writes:

> The problem is that running the chain of tools again and again is
> prohibitively inefficient.  It boils down to recompiling the world
> after each edit.

You could try the gnatmake (and, I think, gprbuild) flag -m:

gnatmake:
   Specify that the minimum necessary amount of recompilations be
   performed. In this mode gnatmake ignores time stamp differences when
   the only modifications to a source file consist in adding/removing
   comments, empty lines, spaces or tabs. This means that if you have
   changed the comments in a source file or have simply reformatted it,
   using this switch will tell gnatmake not to recompile files that
   depend on it (provided other sources on which these files depend have
   undergone no semantic modifications). Note that the debugging
   information may be out of date with respect to the sources if the -m
   switch causes a compilation to be switched, so the use of this switch
   represents a trade-off between compilation time and accurate
   debugging information.