[GHC] #8781: check if GNU nm is really needed and if so let configure detect gnm

[GHC]

#8781: check if GNU nm is really needed and if so let configure detect gnm
----------------------------------------+-----------------------------
        Reporter:  maeder               |            Owner:  kgardas
            Type:  feature request      |           Status:  patch
        Priority:  normal               |        Milestone:
       Component:  Build System         |          Version:  7.8.1-rc1
      Resolution:                       |         Keywords:
Operating System:  Solaris              |     Architecture:  x86
 Type of failure:  Building GHC failed  |       Difficulty:  Unknown
       Test Case:                       |       Blocked By:
        Blocking:                       |  Related Tickets:
----------------------------------------+-----------------------------

Comment (by kgardas):

 Christian, I've not pushed this patch to Austin for inclusion in 7.8.1 as
 I've though it's already too late and the patches now in RCx times should
 be quite safe or fix real regression. Let's see after 7.8.1 is out of door
 if Austin thinks this may be merged into HEAD or not.
 What do you find on this patch scary? It simply uses and parses different
 output from Solaris nm than it's provided from GNU nm and it also
 automatically test if its using GNU or Solaris' nm and behaves
 accordingly. So what's problem with it?

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8781#comment:8>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler