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From: sjw <simon.j.wright@mac.com>
Newsgroups: comp.lang.ada
Subject: Re: architecture-independent GNAT project files?
Date: Mon, 27 Apr 2009 12:10:10 -0700 (PDT)
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On Apr 27, 1:06=A0pm, a...@anon.org (anon) wrote:
> You could use: -gnateD on your command line or GPS options list
>
> =A0 -gnateD? =A0Define or redefine preprocessing symbol, e.g. -gnateDsym=
=3Dval
>
> Where use could set a variable to the architecture path you wish to use
> such as for a 32-bit arch
>
> gnat make =A0-gnateDArchLib=3D"/usr/lib/' =A0<filename>
>
> =A0 =A0 =A0then for the 64 bit arch use
>
> gnat make =A0 -gnateDArchLib=3D"/usr/lib64/' =A0 <filename>
>
> --
> -- =A0ArchLib is define in commnd line options. if not present an error
> -- =A0will be generated.
> --
> =A0 =A0Libs_Path : String :=3D ArchLib ;
>
> =A0 =A0...
>
> =A0 =A0open ( File =3D> LibFlile,
> =A0 =A0 =A0 =A0 =A0 Name =3D> Libs_Path & FileName,
> =A0 =A0 =A0 =A0 =A0 Mode =3D> In_File ) ;

This sounds very like the -X flag. I wonder why there are 2 ways of
doing the same thing?

Oh, -gnatD is a preprocessor flag, sounds like it's for a different
purpose? (gnatprep).

Personally I use -Xsym=3Dval in Makefiles.