Date: 2019-10-10 14:30:13
Clang on Windows
I have used both b2 bjam toolset=clang and toolset=clang-win but found some subtle configuration issues.
So I tried toolset=clang (which reports a clang-linux) and have now got Boost.Multiprecision to pass tests and examples ð
This is really useful to allow b2 toolset=msvc,gcc,clang cxxstd=2a â¦
But I note that clang-win and clang-linux both try to use GCC âs
--start-group and --end-group
and produce spurious warnings like this
lld-link: warning: ignoring unknown argument '--start-group'
lld-link: warning: ignoring unknown argument '-Bstatic'
lld-link: warning: ignoring unknown argument '-Bdynamic'
lld-link: warning: ignoring unknown argument '--end-group'
if using the lld linker
and similarly using the clang++ (is this really the MSVC linker? Its messages look familiar! And the warning number is appropriateâ¦)
LINK : warning LNK4044: unrecognized option '/soname'; ignored
LINK : warning LNK4044: unrecognized option '/-start-group'; ignored
LINK : warning LNK4044: unrecognized option '/Bstatic'; ignored
LINK : warning LNK4044: unrecognized option '/Bdynamic'; ignored
LINK : warning LNK4044: unrecognized option '/-end-group'; ignored
(and also clang++: warning: argument unused during compilation: '-pthread' [-Wunused-command-line-argument] (can be suppressed)
This suggests that both .jam files are not quite right (and that this may cause other problems).
Any suggestions on avoiding these warnings (rather than muffling them)?
I am not expert enough to tackle, let alone cure â is there anyone willing to assist?
Paul A. Bristow
LA8 8AB UK
Boost-Build list run by bdawes at acm.org, david.abrahams at rcn.com, gregod at cs.rpi.edu, cpdaniel at pacbell.net, john at johnmaddock.co.uk