[GHC] #10671: inplace/bin/ghc-stage1 doesn't respect --with-ld override

[GHC]

#10671: inplace/bin/ghc-stage1 doesn't respect --with-ld override
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        Reporter:  mfox              |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Build System      |                 Version:  7.10.1
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by thomie):

 * cc: erikd (added)


Comment:

 I think the problem is that although `--with-ld` adds "ld command" to the
 settings file, it isn't used anywhere.
 {{{
 $ git grep "ld command" compiler/ settings.in
 settings.in: ("ld command", "@SettingsLdCommand@"),
 }}}

 In the function `initSysTools` in `compiler/main/SysTools.hs`, the C
 compiler is always used as the linker:
 {{{
 ...
          ; gcc_prog <- getSetting "C compiler command"
          ; gcc_args_str <- getSetting "C compiler flags"
 ...
         -- Other things being equal, as and ld are simply gcc
          ; let   as_prog  = gcc_prog
                  as_args  = gcc_args
                  ld_prog  = gcc_prog
                  ld_args  = gcc_args
 ...
 }}}

 cc erikd, since he added the `--with-ld` option in Phab:D828 (the FIND_LD
 macro in aclocal.m4).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10671#comment:5>
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