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Date:      Sat, 20 Jan 2024 22:12:34 +0100
From:      Juraj Lutter <otis@FreeBSD.org>
To:        Dimitry Andric <dim@FreeBSD.org>
Cc:        Gleb Popov <arrowd@freebsd.org>, Alan Somers <asomers@freebsd.org>, FreeBSD Hackers <freebsd-hackers@freebsd.org>, Warner Losh <imp@bsdimp.com>, Scott Long <scottl@freebsd.org>, meka@tilda.center
Subject:   Re: The Case for Rust (in the base system)
Message-ID:  <58D3A7DA-84D2-4C35-B9EB-5BD4BAA51706@FreeBSD.org>
In-Reply-To: <01519AEB-2725-492F-BC17-A7A40166D437@FreeBSD.org>
References:  <CAOtMX2hAUiWdGPtpaCJLPZB%2Bj2yzNw5DSjUmkwTi%2B%2BmyemehCA@mail.gmail.com> <CALH631=v4aWhFNDjZcnmjPnzFyZGhg%2BPuRmShx8TFvF6hPbnJQ@mail.gmail.com> <01519AEB-2725-492F-BC17-A7A40166D437@FreeBSD.org>

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[-- Attachment #1 --]


> On 20 Jan 2024, at 18:34, Dimitry Andric <dim@FreeBSD.org> wrote:
> 
> On 20 Jan 2024, at 18:13, Gleb Popov <arrowd@freebsd.org> wrote:
>> 
>> On Sat, Jan 20, 2024 at 7:51 PM Alan Somers <asomers@freebsd.org> wrote:
>>> To
>>> summarize, the cost is that it would double our build times.
>> 
>> Would it? From what I remember, a lot of rust's build time comes from
>> building its own LLVM. Can we reuse our base LLVM for Rust-in-base?
> 
> It used to be the case that the Rust port could not use an LLVM port,
> but had to use its own copy, but it seems that as of
> https://cgit.freebsd.org/ports/commit/?id=098de5bc2195 it is possible
> again.

Speaking of this:

I’ve now tried to build rust with llvm15 on releng/13.2 and all I’ve got was:

wn-freebsd/release/deps/cargo-daa18b6ffb5dc5da" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-Wl,-O1" "-nodefaultlibs" "-Wl,-z,origin" "-Wl,-rpath
,$ORIGIN/../lib"
  = note: ld: error: relocation R_X86_64_32 cannot be used against local symbol; recompile with -fPIC
          >>> defined in /wrkdirs/usr/ports/lang/rust/work/_build/x86_64-unknown-freebsd/stage1-tools/x86_64-unknown-freebsd/release/deps/liblibssh2_sy
s-a60af3093adc87c9.rlib(agent.o)
          >>> referenced by agent.o:(libssh2_agent_init) in archive /wrkdirs/usr/ports/lang/rust/work/_build/x86_64-unknown-freebsd/stage1-tools/x86_64
-unknown-freebsd/release/deps/liblibssh2_sys-a60af3093adc87c9.rlib


Is this something that can be fixed easily?

Thanks

—
Juraj Lutter
otis@FreeBSD.org


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<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><br id="lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On 20 Jan 2024, at 18:34, Dimitry Andric &lt;dim@FreeBSD.org&gt; wrote:</div><br class="Apple-interchange-newline"><div><div>On 20 Jan 2024, at 18:13, Gleb Popov &lt;arrowd@freebsd.org&gt; wrote:<br><blockquote type="cite"><br>On Sat, Jan 20, 2024 at 7:51 PM Alan Somers &lt;asomers@freebsd.org&gt; wrote:<br><blockquote type="cite">To<br>summarize, the cost is that it would double our build times.<br></blockquote><br>Would it? From what I remember, a lot of rust's build time comes from<br>building its own LLVM. Can we reuse our base LLVM for Rust-in-base?<br></blockquote><br>It used to be the case that the Rust port could not use an LLVM port,<br>but had to use its own copy, but it seems that as of<br>https://cgit.freebsd.org/ports/commit/?id=098de5bc2195 it is possible<br>again.<br></div></div></blockquote><div><br></div>Speaking of this:</div><div><br></div><div>I’ve now tried to build rust with llvm15 on releng/13.2 and all I’ve got was:</div><div><br></div><div><div>wn-freebsd/release/deps/cargo-daa18b6ffb5dc5da" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-Wl,-O1" "-nodefaultlibs" "-Wl,-z,origin" "-Wl,-rpath</div><div>,$ORIGIN/../lib"</div><div>&nbsp; = note: ld: error: relocation R_X86_64_32 cannot be used against local symbol; recompile with -fPIC</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &gt;&gt;&gt; defined in /wrkdirs/usr/ports/lang/rust/work/_build/x86_64-unknown-freebsd/stage1-tools/x86_64-unknown-freebsd/release/deps/liblibssh2_sy</div><div>s-a60af3093adc87c9.rlib(agent.o)</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &gt;&gt;&gt; referenced by agent.o:(libssh2_agent_init) in archive /wrkdirs/usr/ports/lang/rust/work/_build/x86_64-unknown-freebsd/stage1-tools/x86_64</div><div>-unknown-freebsd/release/deps/liblibssh2_sys-a60af3093adc87c9.rlib</div><div><br></div><div><br></div><div>Is this something that can be fixed easily?</div><div><br></div><div>Thanks</div><div><br></div></div><div>
<meta charset="UTF-8"><div dir="auto" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div>—</div><div>Juraj Lutter</div><div>otis@FreeBSD.org</div></div>
</div>


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