From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from eggs.gnu.org (eggs.gnu.org [IPv6:2001:470:142:3::10]) by sourceware.org (Postfix) with ESMTPS id 24E303839DBE for ; Fri, 25 Nov 2022 20:45:38 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 24E303839DBE Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gnu.org Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gnu.org Received: from linux-libre.fsfla.org ([209.51.188.54] helo=free.home) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oyfZi-0004lZ-M5; Fri, 25 Nov 2022 15:45:33 -0500 Received: from livre (livre.home [172.31.160.2]) by free.home (8.15.2/8.15.2) with ESMTPS id 2APKjHMg1087131 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Fri, 25 Nov 2022 17:45:18 -0300 From: Alexandre Oliva To: Paul Koning via Gcc Cc: Andrew Pinski , Paul Koning Subject: Re: Can't build Ada Organization: Free thinker, not speaking for the GNU Project References: <2840BB68-0E3A-4848-AA39-32E9B822A4F0@comcast.net> Errors-To: aoliva@lxoliva.fsfla.org Date: Fri, 25 Nov 2022 17:45:17 -0300 In-Reply-To: (Paul Koning via Gcc's message of "Fri, 25 Nov 2022 15:08:11 -0500") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.84 X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,KAM_DMARC_STATUS,SPF_HELO_PASS,SPF_PASS,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On Nov 25, 2022, Paul Koning via Gcc wrote: > They don't seem to have anything to do with missing compilers, but > rather with the use of language features too new for the available > (downloadable) Gnat. The gnat1 front-end requires some of the Ada runtime (libgnat) components. They get built as part of cross builds, so that the compiler itself uses the features present in the runtime. For bootstrapping purposes, stage1's gnat builds in a less-runtime-demanding mode, that gets linked with the runtime of the compiler used to build stage1, and that is then used to build the runtime and later stages. With this arrangement, the runtime components used by the compiler itself may rely on language features that the build compiler doesn't offer, at the cost of requiring cross builds to use a compiler that supports those features. -- Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/ Free Software Activist GNU Toolchain Engineer Disinformation flourishes because many people care deeply about injustice but very few check the facts. Ask me about