[GHC] #8126: iOS patch no 18: Fix Stage1Only so it doesn't build ghctags

[GHC]

#8126: iOS patch no 18: Fix Stage1Only so it doesn't build ghctags
-------------------------------------+-------------------------------------
       Reporter:  StephenBlackheath  |             Owner:
           Type:  bug                |            Status:  new
       Priority:  normal             |         Milestone:
      Component:  Build System       |           Version:  7.7
       Keywords:                     |  Operating System:  Other
   Architecture:  arm                |   Type of failure:  Building GHC
     Difficulty:  Easy (less than 1  |  failed
  hour)                              |         Test Case:
     Blocked By:                     |          Blocking:  7724
Related Tickets:                     |
-------------------------------------+-------------------------------------
 Without this patch, the build breaks when Stage1Only = YES is set in
 mk/build.mk, because it tries to use the non-existent stage 2 compiler to
 build ghctags.

 I am not 100% sure this is correct but it seems so and it works.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8126>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler