[GHC] #15094: unknown symbol `___divmoddi4' error with clock on 32-bit windows

[GHC]

#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