Subject: Re: [boost] Showstopper for Boost 1.56?
From: Eric Niebler (eniebler_at_[hidden])
Date: 2014-08-03 16:35:23
On 7/31/2014 5:03 PM, Edward Diener wrote:
> On 7/31/2014 7:17 PM, Gavin Lambert wrote:
>> On 1/08/2014 10:08, Niall Douglas wrote:
>>> Ok, so solutions to stopping tens of megabytes of compiler warnings
>>> spew for a build of Boost 1.56 on clang are as follows:
>>> 1. Boost Build adds -Wno-c99-extensions and -Wno-variadic-macros to
>>> all clang builds.
>>> 2. All those libraries using -pedantic with Preprocessor (at least
>>> Chrono, Thread and Test) wrap their use of Preprocessor with #pragmas
>>> disabling the warnings.
>>> 3. All those libraries using -pedantic with Preprocessor (at least
>>> Chrono, Thread and Test) add -Wno-c99-extensions and
>>> -Wno-variadic-macros to all clang builds.
>> 4. Those libraries currently using -pedantic stop doing so, at least for
>> clang builds.
> In clang-linux.jam and clang-darwin.jam, the '-pedantic' option is
> passed when <warnings>all is specified and not passed when <warnings>on
> is specified. So what appears to be needed is either just changing the
> line which specifies <warnings>all to be the same as <warnings>on in the
> clang jam files, or keeping the clang jam file as is and changing the
> particular libraries putting out the excessive messages to either
> specify <warnings>on rather than <warnings>all for clang builds or add
> the options specified in 3) above.
> The problem with changing the jam files is that end-users will also get
> the change where <warnings>all does not specify '-pedantic' where they
> might really want it to.
Since nobody has made a definite suggestion or submitted a patch, this
issue will in all likelihood not be fixed for 1.56. Sorry, guys.
Boost list run by bdawes at acm.org, gregod at cs.rpi.edu, cpdaniel at pacbell.net, john at johnmaddock.co.uk