#16084: Improve link times on Windows -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: upstream Priority: high | Milestone: Component: Compiler | Version: 8.6.3 Resolution: | Keywords: Operating System: Windows | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by awson): I think it's easy, but (as I've already mentioned) the other problems exist. Mingw binutils introduce a lot of non-standard things, which `LLD` didn't support at all until recently, now some support have appeared, but AFAIUI, things go best when mingw sdk is built by LLVM toolsuite, not by mingw gcc/binutils. And a general problem is that wrong linkage bugs are *very* hard to debug, this is why I haven't ever tried to continue my mingw clang/lld experiment — it might consume an unpredictable amount of time to understand what is wrong with the generated ghc executable — all the symptoms are that the image file is invalid, since the OS can't even load it properly. Replying to [comment:7 bgamari]:
Frankly I wonder how difficult it would be to add support for these relocations. Given that LLVM code is generally pretty approachable I suspect that would be the easiest path forward.
In the meantime I have been pursuing testing Tamar's binutils patch.
-- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16084#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler