[cfe-dev] VS2017: LLVM Compiler Toolchain Plugin

[Zachary Turner via cfe-dev]

s/the compiler does/the compiller does support this/

On Mon, Oct 1, 2018 at 10:29 AM Zachary Turner <zturner at google.com> wrote:

> It occurred to me there is one case where I think showing filenames is not
> only helpful, but necessary.  It is the case where you specify multiple
> file names on a single command line invocation.
>
> Most build systems will not ever invoke this, but the compiler does, and
> without printing filenames to stdout it will be impossible for the user to
> know what's happening in this case.
>
> On Mon, Oct 1, 2018 at 5:52 AM Hans Wennborg via cfe-dev <
> cfe-dev at lists.llvm.org> wrote:
>
>> On Sat, Sep 29, 2018 at 8:06 PM, Stephen Kelly via cfe-dev
>> <cfe-dev at lists.llvm.org> wrote:
>> > On 29/09/18 15:54, Zachary Turner via cfe-dev wrote:
>> >>
>> >> To be clear, there’s no disagreement that when using MSBuild you should
>> >> have exactly the same experience with clang-cl and cl. And by exact
>> same
>> >> experience, that means if anything is going on behind the scenes to
>> make
>> >> sure the filename is printed, it should be invisible to the user.
>> >
>> >
>> > Hmm, I don't know what MSBuild has to do with it. Why shouldn't the
>> > experience be the same with Ninja, or another buildsystem, or just when
>> > running both from the command line? Maybe this is where I'm missing
>> > something.
>>
>> It's not a goal of clang-cl to emulate MSVC perfectly. It's just
>> aiming to be compatible so that's it's easy for users to switch
>> between them. The goal is to be better than MSVC :-)
>>
>> I think the behaviour of not echoing the filename is better and should
>> be the default, but I can see that it's useful when using a build
>> system that doesn't provide any separate indication of progress, so
>> let's add a /showFilenames flag as discussed on
>> https://bugs.llvm.org/show_bug.cgi?id=31957
>>
>> I will try to get a patch out unless someone beats me to it.
>>
>> Thanks,
>> Hans
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>>
>
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