Also related: https://haskell-phabricator.global.ssl.fastly.net/D151 as Solaris is not the only problematic platform with CPP, HVR has started excellent 'RFC: "Native -XCPP" Proposal' thread in the past together with the wiki page: https://ghc.haskell.org/trac/ghc/wiki/Proposal/NativeCpp Hope this helps, Karel On 12/31/15 09:28 AM, Karel Gardas wrote:
Hi Alain,
I guess you are hit by well known issue in GCC's CPP on Solaris. Just verify here:
https://gcc.gnu.org/ml/gcc/2014-08/msg00114.html
solution in this case is simple: use configure option to set different non buggy CPP as a CPP for GHC.
Please let me know if this is the culprit,
Thanks, Karel
On 12/31/15 08:09 AM, Alain O'Dea wrote:
On SmartOS GHC flag warnings show up like this: /tmp/ghc72341_0/ghc_1.hscpp:7:16: Warning: -fffi is deprecated: use -XForeignFunctionInterface or pragma {-# LANGUAGE ForeignFunctionInterface #-} instead
It appears that this line in DriverPipeline leads to the correct filename in warnings on Ubuntu, but not on SmartOS: src_opts <- liftIO $ getOptionsFromFile dflags0 output_fn https://github.com/ghc/ghc/blob/bb7f2e33197e667eb694bd1243f125c722a0a868/com...
How does the intermediate hscpp filename get restored to a correct filename if warnings are generated during a re-read of the pragmas after having preprocessed the file?
Full investigation notes are here (rambling and unedited): https://gist.github.com/AlainODea/98141991849093285c52
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