Date: Fri, 09 Feb 2024 09:26:51 +0000 From: Lorenzo Salvadore <developer@lorenzosalvadore.it> To: Mark Millard <marklmi@yahoo.com> Cc: Nuno Teixeira <eduardo@freebsd.org>, FreeBSD Toolchain <freebsd-toolchain@freebsd.org>, FreeBSD Mailing List <freebsd-ports@freebsd.org>, "salvadore@freebsd.org" <salvadore@freebsd.org> Subject: Re: Why lang/gcc14-devel builds are failing on the build servers: needs USES= compiler:c++14-lang (or higher) instead of compiler:c++11-lang Message-ID: <L2gmh-qywNWlAQse3LXKlvs1stPpkEtP7IgSlUeNWKkwoDwSOFo75uV3H4cF2JNuaSPWaDMdBWcNTjGnyG4r39VHRj4GcxGyz10iSip4WHI=@lorenzosalvadore.it> In-Reply-To: <44DFB4DD-3DAA-4F6E-AA45-267A6496EE7E@yahoo.com> References: <62C8F08E-8D73-4918-A91F-4FC01E94FD8A.ref@yahoo.com> <62C8F08E-8D73-4918-A91F-4FC01E94FD8A@yahoo.com> <CAFDf7UKhVxXH-SmW%2BS1k0a1kOoGtyZmEQvN0zX4Etucy3pAsjA@mail.gmail.com> <44DFB4DD-3DAA-4F6E-AA45-267A6496EE7E@yahoo.com>
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On Thursday, February 8th, 2024 at 18:11, Mark Millard <marklmi@yahoo.com> = wrote: >=20 >=20 >=20 >=20 > On Feb 7, 2024, at 23:40, Nuno Teixeira eduardo@freebsd.org wrote: >=20 > > USES compiler is somehow deprecated as clang and gcc on base and ports = supports capable compiler described in handbook: > > https://docs.freebsd.org/en/books/porters-handbook/book/#uses-compiler >=20 >=20 > Use of the likes of >=20 > USES=3D compiler:c++11-lang . . . >=20 > also causes the compile commands to start with: >=20 > c++ -std=3Dc++11 . . . >=20 > ( as shows up in the log file for building lang/gcc14-devel ). >=20 > It is not just about which compiler execuable that is selected > by the notation, it is also about telling that executable > which langauge version it is to apply. libc++ in turn does > different things for its definitions based on which standard > is used by the compiler. >=20 > Using the likes of, say: >=20 > USES=3D compiler:c++14-lang . . . >=20 > would also cause the compile commands to have: >=20 > c++ -std=3Dc++14 . . . >=20 > that would be provide the constexpr definitions > needed. Later C++ standards also would provide > those. >=20 > It is true that the default for -std=3Dc++?? may be > -std=3Dc++14 or later. But some things fail for use > of too recent of a standard because of changes in > the standards as they progress --so the defaults > need not work. (I've no clue of the specifics for > building lang/gcc14-devel .) >=20 > I expect that slavadore will pick a notation that > is sufficient for the builds to work. Thanks for the suggestion. lang/gcc14-devel is having multiple issues at the moment (and I still need to finish the GCC_DEFAULT update to GCC 13 exp-run), so I might need a bit of time to fix this one, but I will definitely have a look into this as soon as possible. Thanks, Lorenzo Salvadore
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