[RFH] changing linkfile name depending on a flag passed

[Jim Wilson]

Andrew Pinski wrote:
> To support libobjc on Darwin I need able change -lobjc to
> -lobjc-gnu if -fgnu-runtime is supplied.  I know that gcc.c
> needs to be changed but I do not know where to change -lobjc
> to be -lobjc-gnu, I tried LINK_SPECS but that did not work at
> all.

LINK_SPECS can be overriden by the target, and it is overriden by many. 
  See for instance config/darwin.h.

You might have to create a new SPEC for this purpose, and then modify 
LINK_COMMAND_SPEC to use it.  And then modify targets that override 
LINK_COMMAND_SPEC to include it also, but fortunately there are only two 
of those, darwin and i386/djgpp.h.
-- 
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com