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Date:      Sun, 16 Jul 2023 17:19:40 +0200
From:      Piotr Kubaj <pkubaj@anongoth.pl>
To:        Nuno Teixeira <eduardo@freebsd.org>
Cc:        ports-committers@freebsd.org, dev-commits-ports-all@freebsd.org, dev-commits-ports-main@freebsd.org
Subject:   Re: git: bf0af791ab80 - main - lang/rust: add LTO option
Message-ID:  <ZLQKjLxYHRv1aGZQ@talos>
In-Reply-To: <CAFDf7UKNikFy8Qv-c3FZ08gXM0iaESfRVMU5oHrywcDUAhGiyA@mail.gmail.com>
References:  <202307161059.36GAx0v1016085@gitrepo.freebsd.org> <CAFDf7UKNikFy8Qv-c3FZ08gXM0iaESfRVMU5oHrywcDUAhGiyA@mail.gmail.com>

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I don't have any numbers, just tried to build rust and saw it seems to
work fine.

As for plans to switch it by default, I think it should be talked first
with other rust@ committers.

On 23-07-16 14:29:00, Nuno Teixeira wrote:
> Hello Piotr,
>=20
> Very curious to see the effect of rust with lto compiling ports need it,
> memory, cpu speed, etc.
>=20
> Since LTO is on by default on ports using cargo, is there any plans to tu=
rn
> LTO on on rust himself?
>=20
> Cheers,
>=20
> Piotr Kubaj <pkubaj@freebsd.org> escreveu no dia domingo, 16/07/2023 =C3=
=A0(s)
> 11:59:
>=20
> > The branch main has been updated by pkubaj:
> >
> > URL:
> > https://cgit.FreeBSD.org/ports/commit/?id=3Dbf0af791ab80f4f109bfecf4a95=
4bcf94f00947d
> >
> > commit bf0af791ab80f4f109bfecf4a954bcf94f00947d
> > Author:     Piotr Kubaj <pkubaj@FreeBSD.org>
> > AuthorDate: 2023-07-16 10:57:56 +0000
> > Commit:     Piotr Kubaj <pkubaj@FreeBSD.org>
> > CommitDate: 2023-07-16 10:58:20 +0000
> >
> >     lang/rust: add LTO option
> > ---
> >  lang/rust/Makefile | 8 +++++++-
> >  1 file changed, 7 insertions(+), 1 deletion(-)
> >
> > diff --git a/lang/rust/Makefile b/lang/rust/Makefile
> > index 184c0768b95f..71d8416d34b8 100644
> > --- a/lang/rust/Makefile
> > +++ b/lang/rust/Makefile
> > @@ -48,7 +48,7 @@ CONFLICTS_INSTALL?=3D   rust-nightly
> >  # ?=3D to allow users to still overwrite it in make.conf.
> >  TMPDIR?=3D       ${WRKDIR}
> >
> > -OPTIONS_DEFINE=3D                DOCS GDB SOURCES WASM
> > +OPTIONS_DEFINE=3D                DOCS GDB LTO SOURCES WASM
> >  OPTIONS_DEFAULT=3D       SOURCES WASM
> >
> >  GDB_DESC=3D      Install ports gdb (necessary for debugging rust progr=
ams)
> > @@ -191,7 +191,13 @@ do-configure:
> >         @${ECHO_CMD} 'deny-warnings=3Dfalse' >> ${WRKSRC}/config.toml
> >         @${ECHO_CMD} 'verbose-tests=3Dtrue' >> ${WRKSRC}/config.toml
> >         @${ECHO_CMD} 'lld=3D${_RUST_BUILD_WASM}' >> ${WRKSRC}/config.to=
ml
> > +.if ${PORT_OPTIONS:MLTO}
> > +       @${ECHO_CMD} 'lto=3D"thin"' >> ${WRKSRC}/config.toml
> > +.endif
> >         @${ECHO_CMD} '[llvm]' >> ${WRKSRC}/config.toml
> > +.if ${PORT_OPTIONS:MLTO}
> > +       @${ECHO_CMD} 'thin-lto=3Dtrue' >> ${WRKSRC}/config.toml
> > +.endif
> >  .if defined(WITH_CCACHE_BUILD) && !defined(NO_CCACHE)
> >         @${ECHO_CMD} 'ccache=3D"${CCACHE_BIN}"' >> ${WRKSRC}/config.toml
> >  .else
> >
>=20
>=20
> --=20
> Nuno Teixeira
> FreeBSD Committer (ports)

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