#15094: unknown symbol `___divmoddi4' error with clock on 32-bit windows ---------------------------------+------------------------------ Reporter: simonmic | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.2 Resolution: | Keywords: Operating System: Windows | Architecture: x86 Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | ---------------------------------+------------------------------ Comment (by Phyx-): It's a problem with the library. `x86` doesn't have a `64 bit` (`DImode`) `divmod` instruction. So GCC emulates it using a compiler built-in `___divmoddi4`. Since the library uses this built-in it needs to link against `libgcc`. It's not a problem for x86 Linux because of `dynamic-way`. When the `so` is made GCC links in `libgcc` so the problem doesn't show. Using non- dynamic-way will have the same issue on Linux as well. The clock library needs to add `extra-libraries: gcc`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15094#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler