#10334: __ctzdi2/si2/__clzdi2/si2 unknown symbols in ghc-prim on non-shared libs platform -------------------------------------+------------------------------------- Reporter: kgardas | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Core Libraries | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by ekmett): * owner: ekmett => Comment: I'd encourage a fix, but I'm going to relinquish control of the ticket as it is more about how the linker/RTS works than the structure of the core libraries per se. If we need a good `ctz` and `clz`, I have implementations in various libraries we could adapt back into C/C-- and contribute from various projects. e.g. https://github.com/ekmett/bits/blob/ded1403737ce26e819c1d1c1facb41a9e776eb46... gives usable De Bruijn multiplication tables and https://github.com/ekmett/bits/blob/ded1403737ce26e819c1d1c1facb41a9e776eb46... provides a working portable `ctz`. Right below it is a decent `clz` that uses our existing `popCount` primitive. You may need to adjust the answers by 1 to comply with the `__builtin_clz` and `__builtin_ctz` primitives, I forget. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10334#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler