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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Ada Packages
Date: Sat, 17 Sep 2011 08:42:15 +0100
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Date: 2011-09-17T08:42:15+01:00
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Georg Maubach <ada_resources@gmx.de> writes:

> gcc-4.3 -c basic_num_io.ads
> cannot generate code for file basic_num_io.ads (package spec)

As someone above pointed out, GNAT won't generate object code from a
spec (unless the spec doesn't need, ie must not have) a body. Try
compiling the .adb file.

-gnatc is "Check syntax and semantics only (no code generation)". I
 found this out using the command "gnatmake -h".

You're better off using gnatmake as the compiler driver, it understands
all about dependencies and the Ada bind/link process, and will produce
executables if it can.