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From: Geert Bosch <geert@gonzo.sun3.iaf.nl>
Subject: Re: Ada for OS/2
Date: 1997/08/18
Message-ID: <5t9i68$pns$1@gonzo.sun3.iaf.nl>#1/1
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 comp.os.os2.programmer.misc,comp.os.os2.programmer.oop,comp.lang.ada
Date: 1997-08-18T00:00:00+00:00
List-Id: <comp.lang.ada>


A few weeks ago, Haug said
   <<and set "SET GCCOPT=-pipe" in your config.sys to prevent
   gnat from using tempfiles. It uses pipes instead.>>

Robert Dewar replied:
   <<I tried this, it made absolutely zero difference in speed.
   Are you just guessing that this should speed up GNAT, or is that
   your actual experience.>>

One last note: not only does using SET GCCOPT=-pipe not have any
effect on compilation speed, it does introduce some problems. When
GNAT generates informal messages, these messages get passed to the
assembler input with an error as result. The reason is that these
informal messages are written to standard out, just like the assembly
code when using pipes.

This happens when a compilation generates no code (compiling a
generic for example) and when using -gnatv. So I would recommend
not to use GCCOPT=-pipe with GNAT.

Regards,
   Geert