#6063: GHC's build-time ld-flag checks are problematic ---------------------------------+------------------------------------------ Reporter: parcs | Owner: thoughtpolice Type: bug | Status: patch Priority: high | Milestone: 7.8.1 Component: Compiler | Version: 7.4.1 Keywords: | Os: Linux Architecture: Unknown/Multiple | Failure: GHC doesn't work at all Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: #4862 | ---------------------------------+------------------------------------------ Comment(by igloo): Generally looks fine to me. A few comments: Re this comment: {{{ It can also simply happen by using a binary distribution: GHC was built on a machine using GNU ld, and installed on a machine using GNU gold. }}} if by "binary distribution" you mean the bindists that we have on the website, then that's not the case: The info is redetected when you install a bindist. On `compiler/main/SysTools.lhs` line 642, `case os of` doesn't actually match on the os at all AFAICS. In `--make` mode, do we sometimes link many times? Even if not, GHC API users might link many times. It might be better to put an `IORef (Maybe LinkerInfo)` in DynFlags, to cache the info. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/6063#comment:16 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler