From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id E3BF115817D for ; Thu, 13 Jun 2024 16:44:28 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 82EF8E2B5E; Thu, 13 Jun 2024 16:44:25 +0000 (UTC) Received: from smtp.gentoo.org (woodpecker.gentoo.org [140.211.166.183]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 3575CE2B53 for ; Thu, 13 Jun 2024 16:44:25 +0000 (UTC) Message-ID: Subject: Re: [gentoo-dev] [PATCH] toolchain-funcs.eclass: Add tc-has-64bit-time_t From: James Le Cuirot To: gentoo-dev@lists.gentoo.org Date: Thu, 13 Jun 2024 17:44:15 +0100 In-Reply-To: <20240613152401.47691-1-mgorny@gentoo.org> References: <20240613152401.47691-1-mgorny@gentoo.org> Autocrypt: addr=chewi@gentoo.org; 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micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-F1iG1NVDU85wplW1XGYB" User-Agent: Evolution 3.52.1 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@lists.gentoo.org Reply-to: gentoo-dev@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 X-Archives-Salt: 45b08c6c-dcba-452a-8943-ef66be66b50d X-Archives-Hash: 196ecfdcafc096b85affa4478476569c --=-F1iG1NVDU85wplW1XGYB Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2024-06-13 at 17:23 +0200, Micha=C5=82 G=C3=B3rny wrote: > Add a helper function to check whether time_t is 64-bit. This could > be used e.g. to deselect tests that rely on timestamps exceeding Y2k38. > It is meant to be more future-proof than hardcoding a list of 32-bit > architectures, given the necessity of switching to 64-bit time_t > in the future. >=20 > Signed-off-by: Micha=C5=82 G=C3=B3rny > --- > eclass/toolchain-funcs.eclass | 12 +++++++++++- > 1 file changed, 11 insertions(+), 1 deletion(-) >=20 > Pull-Request: https://github.com/gentoo/gentoo/pull/37142 >=20 > diff --git a/eclass/toolchain-funcs.eclass b/eclass/toolchain-funcs.eclas= s > index cde84e6f34c8..3e20e956e9c2 100644 > --- a/eclass/toolchain-funcs.eclass > +++ b/eclass/toolchain-funcs.eclass > @@ -1,4 +1,4 @@ > -# Copyright 2002-2023 Gentoo Authors > +# Copyright 2002-2024 Gentoo Authors > # Distributed under the terms of the GNU General Public License v2 > =20 > # @ECLASS: toolchain-funcs.eclass > @@ -1251,4 +1251,14 @@ tc-is-lto() { > return 1 > } > =20 > +# @FUNCTION: tc-has-64bit-time_t > +# @RETURN: Shell true if time_t is at least 64 bits long, false otherwis= e > +tc-has-64bit-time_t() { > + "$(tc-getCC)" ${CFLAGS} ${CPPFLAGS} -c -x c - -o /dev/null <<-EOF &>/de= v/null > + #include > + int test[sizeof(time_t) >=3D 8 ? 1 : -1]; > + EOF > + return $? > +} > + > fi I take it this can't be done with tc-cpp-is-true because you need more than just the preprocessor? Please don't quote $(tc-getCC), CC can have additional arguments in some cases. 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