Re: [ccache] clang modules (-fmodules) support

2016-08-25 Thread Joel Rosdahl
On 24 August 2016 at 22:51, Piotr Wach  wrote:
> I have seen that "-fmodules" compiler flag has been recently marked as
> "hard" / unsupported (?)

Yes, "too hard" here means unsupported, which could mean either
impossible to implement or not yet implemented.

> is this because no one had time to implement it or are there real problems
> with supporting it in ccache?

For what it's worth, I haven't tried, and I don't recall hearing
anybody else mention it either. So it would be great if you could have
a look at it!

-- Joel

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Re: [ccache] clang modules (-fmodules) support

2016-08-24 Thread Piotr Wach
"-fmodules" flag was disabled as a fix to this bug report:
https://bugzilla.samba.org/show_bug.cgi?id=11048

On 24 August 2016 at 21:49, Piotr Wach  wrote:

> Hello,
>
> we experiment with clang modules in quite large C++ code base to improve
> build times.
>
> I have seen that "-fmodules" compiler flag has been recently marked as
> "hard" / unsupported (?) - is this because no one had time to implement it
> or are there real problems with supporting it in ccache?
>
> I want to try to add support for clang modules to ccache. However, I first
> would like to know if someone has already tried, and it turned out to be
> not possible and what were the problems with doing it.
>
>
> Piotr Wach
>
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