Date: Sun, 31 Jul 2022 13:07:17 +0100
From: Nuno Teixeira <eduardo@freebsd.org>
To: FreeBSD Mailing List <freebsd-ports@freebsd.org>
Subject: Re: cmake cxx standard and USES compiler:c++{17,14,11}-lang
Message-ID: <CAFDf7ULUuqpcKaV6aM=rgSraSi2Vugw1QHBxgmsMSc1cpk3w%2BA@mail.gmail.com>
In-Reply-To: <20220731071753.cqg4wkclcpqzpatk@nexus.home.palmen-it.de>
References: <CAFDf7UJ-cXVtGjLE6=GyJbjRxb6yaKghoPXy_ED7cDFkUd3=%2Bw@mail.gmail.com> <20220731071753.cqg4wkclcpqzpatk@nexus.home.palmen-it.de>
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--00000000000043053a05e518ba88 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Felix, Thanks for your explanation. Cheers Felix Palmen <felix@palmen-it.de> escreveu no dia domingo, 31/07/2022 =C3= =A0(s) 08:18: > Hello Nuno, > > * Nuno Teixeira <eduardo@freebsd.org> [20220730 22:00]: > > I'm working on a port that have wrksrc CMakeLists.txt: > > --- > > set(CMAKE_CXX_STANDARD 17) > > set(CMAKE_CXX_STANDARD_REQUIRED ON) > > --- > > but port Makefile have: > > --- > > USES=3D cmake compiler:c++14-lang > > --- > > > > Should I change it to compiler:c++17-lang? > > Most likely yes. > > > Do USES=3D compiler have any influence on cmake building? > > Currently not in practice. It will just pull in a compiler from ports > *if* the base compiler doesn't offer the standard required, but as far > as I know, a base compiler supporting c++14 will also support c++17 (and > after EOL of 12, there won't be any base compilers left not supporting > these standards). > > I have a review open trying to add c++20 and c++2b *and* to honor > LLVM_DEFAULT in case it will pull in llvm here: > <https://reviews.freebsd.org/D35889>; > > BR, Felix > > -- > Dipl.-Inform. Felix Palmen <felix@palmen-it.de> ,.//.......... > {web} http://palmen-it.de {jabber} [see email] ,//palmen-it.de > {pgp public key} http://palmen-it.de/pub.txt // """"""""""" > {pgp fingerprint} A891 3D55 5F2E 3A74 3965 B997 3EF2 8B0A BC02 DA2A > --00000000000043053a05e518ba88 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div>Hi Felix,</div><div><br></div><div>Thanks for your ex= planation.</div><div><br></div><div>Cheers<br></div></div><br><div class=3D= "gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">Felix Palmen <<a hre= f=3D"mailto:felix@palmen-it.de">felix@palmen-it.de</a>> escreveu no dia = domingo, 31/07/2022 =C3=A0(s) 08:18:<br></div><blockquote class=3D"gmail_qu= ote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,20= 4);padding-left:1ex">Hello Nuno,<br> <br> * Nuno Teixeira <<a href=3D"mailto:eduardo@freebsd.org" target=3D"_blank= ">eduardo@freebsd.org</a>> [20220730 22:00]:<br> > I'm working on a port that have wrksrc CMakeLists.txt:<br> > ---<br> > set(CMAKE_CXX_STANDARD 17)<br> > set(CMAKE_CXX_STANDARD_REQUIRED ON)<br> > ---<br> > but port Makefile have:<br> > ---<br> > USES=3D cmake compiler:c++14-lang<br> > ---<br> > <br> > Should I change it to compiler:c++17-lang?<br> <br> Most likely yes.<br> <br> > Do USES=3D compiler have any influence on cmake building?<br> <br> Currently not in practice. It will just pull in a compiler from ports<br> *if* the base compiler doesn't offer the standard required, but as far<= br> as I know, a base compiler supporting c++14 will also support c++17 (and<br= > after EOL of 12, there won't be any base compilers left not supporting<= br> these standards).<br> <br> I have a review open trying to add c++20 and c++2b *and* to honor<br> LLVM_DEFAULT in case it will pull in llvm here:<br> <<a href=3D"https://reviews.freebsd.org/D35889" rel=3D"noreferrer" targe= t=3D"_blank">https://reviews.freebsd.org/D35889</a>><br>; <br> BR, Felix<br> <br> -- <br> =C2=A0Dipl.-Inform. Felix Palmen=C2=A0 <<a href=3D"mailto:felix@palmen-i= t.de" target=3D"_blank">felix@palmen-it.de</a>>=C2=A0 =C2=A0,.//........= ..<br> =C2=A0{web}=C2=A0 <a href=3D"http://palmen-it.de" rel=3D"noreferrer" target= =3D"_blank">http://palmen-it.de</a>=C2=A0 {jabber} [see email]=C2=A0 =C2=A0= ,//<a href=3D"http://palmen-it.de" rel=3D"noreferrer" target=3D"_blank">pal= men-it.de</a><br> =C2=A0{pgp public key}=C2=A0 =C2=A0 =C2=A0<a href=3D"http://palmen-it.de/pu= b.txt" rel=3D"noreferrer" target=3D"_blank">http://palmen-it.de/pub.txt</a>= =C2=A0 =C2=A0//=C2=A0 =C2=A0""""""""= ;"""<br> =C2=A0{pgp fingerprint} A891 3D55 5F2E 3A74 3965 B997 3EF2 8B0A BC02 DA2A<b= r> </blockquote></div> --00000000000043053a05e518ba88--
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