From: "Martin Storsjö" <martin@martin.st>
To: Mark Harmstone <mark@harmstone.com>
Cc: binutils@sourceware.org
Subject: Re: [PATCH 1/2] ld: Add --pdb option
Date: Mon, 3 Oct 2022 21:58:19 +0300 (EEST) [thread overview]
Message-ID: <7e5d88ff-9aa9-dbfd-aa80-1793c2c48fde@martin.st> (raw)
In-Reply-To: <b1e7260b-b91b-cef6-fd30-f6d3533653a5@harmstone.com>
On Mon, 3 Oct 2022, Mark Harmstone wrote:
> Hi Martin,
>
>> As I assume you're aware, lld's mingw port also supports PDB generation -
>> and the description of this option also sounds like it's chosen to match
>> lld's option for outputting PDB files - that's good!
>
> Yes, that's right. One notable difference is that the parameter here is
> optional, unlike with lld, making it a lot easier to fit this into e.g. CMake
> toolchain files or LDFLAGS.
LLD also has got that behaviour, since
https://github.com/llvm/llvm-project/commit/2c52ddf31f5421c5373923535b958b84c79772e3
in 2019. That's in particular why I wanted to make sure that this case
works the same in binutils too.
> It looks like the equals sign is mandatory when providing optional
> parameters, otherwise it interprets the filename as another parameter.
Yep, that's the case in LLD too.
Unfortunately I didn't think of this behaviour initially when I first
added this option - otherwise we could have had e.g. --pdb as a boolean
option to just output to the default name, and e.g. --output-pdb=<name> if
you wanted to specify the name. But oh well, "-pdb=" works, and I guess it
isn't the worst thing in the world.
> But it does mean that the form "-pdb=out.pdb" will work on both ld and
> lld, which I think is the most important thing.
TBH, I consider the "-pdb=" case equally important too - that's what most
people would use in the end.
// Martin
next prev parent reply other threads:[~2022-10-03 18:58 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-03 1:43 Mark Harmstone
2022-10-03 1:43 ` [PATCH 2/2] ld: Add minimal pdb generation Mark Harmstone
2022-10-03 5:12 ` [PATCH 1/2] ld: Add --pdb option Martin Storsjö
2022-10-03 16:57 ` Mark Harmstone
2022-10-03 18:58 ` Martin Storsjö [this message]
2022-10-07 12:16 ` Martin Storsjö
2022-10-09 23:46 ` Mark Harmstone
2022-10-10 10:27 ` Martin Storsjö
2022-10-10 16:55 ` Mark Harmstone
2022-10-10 20:58 ` Martin Storsjö
2022-10-05 4:20 ` Alan Modra
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