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From: =?utf-8?Q?Yannick_Duch=C3=AAne_=28Hibou57?=
 =?utf-8?Q?=29?=
 <yannick_duchene@yahoo.fr>
Newsgroups: comp.lang.ada
Subject: Re: Specifying an `--RTS` option in a GPR file, for a runtime library
Date: Fri, 19 Apr 2013 00:10:15 +0200
Organization: Ada @ Home
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Date: 2013-04-19T00:10:15+02:00
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Le Wed, 17 Apr 2013 13:43:46 +0200, Brian Drummond  =

<brian@shapes.demon.co.uk> a =C3=A9crit:
> So Gnatmake accepts "." as a starting point for the RTS=3D option, and=
 an
> absolute path.

I may have said an error about GNATMake (will be back on that a later da=
y).

> The other valid root for RTS=3D options is in the compiler installatio=
n
> "lib" directory. I don't know exactly where that would be in your
> installation, but by analogy with a couple of mine :
>
> if the path to my compiler (msp430-gnatmake) is /usr/local/msp430/bin
> the root path for RTS=3D search is
> /usr/local/msp430/lib/gcc/msp430/4.7.2/
> so that "RTS=3Drts/msp430f2xx" translates to
> /usr/local/msp430/lib/gcc/msp430/4.7.2/rts/msp430f2xx
> and the compiler expects to find
> /usr/local/msp430/lib/gcc/msp430/4.7.2/rts/msp430f2xx/adainclude/
> system.ads
>
> Similarly my AVR-Ada compiler installed in
> /opt/avr_472_gnat/bin
> expects to see the RTS root path in
> /opt/avr_472_gnat/lib/gcc/avr/4.7.2/
> so that "RTS=3Drts/avr5" looks in
> /opt/avr_472_gnat/lib/gcc/avr/4.7.2/rts/avr5
>
> I can only guess that GPRbuild looks here for the RTS and is more
> restricted in its other possibilities.

You right and what you describe match what I've just read in  =

`<prefix>/share/gprconfig/compilers.xml`, lines 332 .. 334, which shows =
 =

GPRBuild defaults to paths with precise patterns, relatives to the GNAT =
 =

compiler location GPRConfig found:

     \.\./lib/gcc/$TARGET/$gcc_version/adalib/
     \.\./lib/gcc/$TARGET/$gcc_version/ada_source_path
     \.\./lib/gcc/$TARGET/$gcc_version/rts-(.*)/adalib/

That's the place where it's specified.


-- =

=E2=80=9CSyntactic sugar causes cancer of the semi-colons.=E2=80=9D [1]
=E2=80=9CStructured Programming supports the law of the excluded muddle.=
=E2=80=9D [1]
[1]: Epigrams on Programming =E2=80=94 Alan J. =E2=80=94 P. Yale Univers=
ity