From: Iain Sandoe <iain@sandoe.co.uk>
To: GCC Development <gcc@gcc.gnu.org>
Cc: Nathan Sidwell <nathanmsidwell@gmail.com>,
Jonathan Wakely <jwakely.gcc@gmail.com>,
David Blaikie <dblaikie@gmail.com>,
"ben.boeckel" <ben.boeckel@kitware.com>,
"chuanqi.xcq" <yedeng.yd@linux.alibaba.com>
Subject: Re: Naming flag for specifying the output file name for Binary Module Interface files
Date: Fri, 9 Dec 2022 17:33:06 +0000 [thread overview]
Message-ID: <F8B613A8-68B9-49F4-8E59-F274754F5587@sandoe.co.uk> (raw)
In-Reply-To: <29c9ff1a-2c88-4e02-81e0-9780020b8e77.yedeng.yd@linux.alibaba.com>
Hello all.
> On 9 Dec 2022, at 01:58, chuanqi.xcq <yedeng.yd@linux.alibaba.com> wrote:
>
> It looks like `-fmodule-file` is better from the discussion. So let's take it. Thanks for everyone here
So FAOD (after this discussion) Chuanqi's current patchset implements the following in clang:
-fmodule-output
- this causes the BMI to be saved in the CWG with the basename of the source file and a suffix of .pcm.
-fmodule-output=<path>
- this causes the BMI to be saved at the path specified.
===
These facilities support build systems that do not use the P1184 interface to map between module names and paths.
cheers
Iain
>
> Thanks,
> Chuanqi
> ------------------------------------------------------------------
> From:Nathan Sidwell <nathan@acm.org>
> Send Time:2022年12月8日(星期四) 01:00
> To:Iain Sandoe <iain@sandoe.co.uk>; GCC Development <gcc@gcc.gnu.org>
> Cc:Jonathan Wakely <jwakely.gcc@gmail.com>; chuanqi.xcq <yedeng.yd@linux.alibaba.com>; David Blaikie <dblaikie@gmail.com>; ben.boeckel <ben.boeckel@kitware.com>
> Subject:Re: Naming flag for specifying the output file name for Binary Module Interface files
>
> On 12/7/22 11:58, Iain Sandoe wrote:
> >
> >
> >> On 7 Dec 2022, at 16:52, Nathan Sidwell via Gcc <gcc@gcc.gnu.org> wrote:
> >>
> >> On 12/7/22 11:18, Iain Sandoe wrote:
> >>
> >>> I think it is reasonable to include c++ in the spelling, since other languages supported by
> >>> GCC (and clang in due course) have modules.
> >>
> >> I disagree (about the reasonableness part). Other languages have modules, true, but if they want to name the output file, why not have the same option spelling?
> >>
> >> I.e. why are we considering:
> >>
> >> $compiler -fc++-module-file=bob foo.cc
> >> $compiler -ffortran-module-file=bob foo.f77
> >>
> >> The language is being selected implicitly by the file suffix (or explictly via -X$lang). There's no reason for some other option controlling an aspect of the compilation to rename the language. We don't do it for language-specific warning options, and similar. (i.e. no -f[no-]c++-type-aliasing vs -fc-type-aliasing, nor -Wc++-extra vs -Wc-extra[*]
> >
> > Fair points.
> >
> > Unfortunately (in case it has not already been mentioned in this thread) ‘-fmodule-file=‘ is already taken and it means an input, not an output. So, whatever we choose it needs to be distinct from that.
>
> Yes, that's why I suggested -fmodule-output=
>
> nathan
>
> --
> Nathan Sidwell
next prev parent reply other threads:[~2022-12-09 17:33 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-06 21:03 David Blaikie
2022-12-07 0:35 ` Nathan Sidwell
2022-12-07 1:45 ` Jonathan Wakely
2022-12-07 2:30 ` chuanqi.xcq
2022-12-07 15:23 ` Jonathan Wakely
2022-12-07 15:45 ` ben.boeckel
2022-12-07 16:18 ` Iain Sandoe
2022-12-07 16:29 ` ben.boeckel
2022-12-07 16:52 ` Nathan Sidwell
2022-12-07 16:58 ` Iain Sandoe
2022-12-07 17:00 ` Nathan Sidwell
2022-12-09 1:58 ` chuanqi.xcq
2022-12-09 17:33 ` Iain Sandoe [this message]
2022-12-09 17:43 ` David Blaikie
2022-12-12 14:30 ` Nathan Sidwell
2022-12-13 3:10 ` chuanqi.xcq
2022-12-13 15:56 ` David Blaikie
2022-12-14 9:56 ` chuanqi.xcq
2022-12-14 18:39 ` David Blaikie
2022-12-14 22:29 ` Nathan Sidwell
2022-12-15 5:58 ` chuanqi.xcq
2022-12-15 7:37 ` Iain Sandoe
2022-12-15 13:21 ` ben.boeckel
2022-12-07 16:43 ` Nathan Sidwell
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