Re: don't add -isysroot to compiler flags if already in $CC

[Ralf Wildenhues]

Hi Peter,

* Peter O'Gorman wrote on Mon, Nov 28, 2005 at 04:43:44PM CET:
> Hi,
> I had been telling those who asked for years to put -arch flags etc in 
> CC/CXX env vars before calling configure. My recent -isysroot patch broke 
> the ability to do that, apple's linker rather stupidly dies on some 
> duplicate arguments. The only arg I really *need* to eliminate dups of is 
> -isysroot, but hey!

Can it ever be useful to add more than one of those?
Like this:
  -framework foo -framework bar

If yes, then you should
  prev=darwin_framework
  framework_arg=$arg
and, in the
  darwin_framework)

case, check whether _both_ args match.  Even if not: are we going to
remember correctly when we add the next flag here?

Also, I wonder why you leave out CFLAGS and such, so why not check
against $compile_command?

To check against any in-between white space, you'd probably need expr,
as this (SPACE and TAB)

   case " $compile_command " in
   *" $framework_arg[   ]$arg "*) ;;
   *)..

may not be enough?

> Okay?

Dunno either.

Cheers,
Ralf

> 2005-11-28  Peter O'Gorman  <address@hidden>
> 
>       * libltdl/config/ltmain.m4sh [osf1,darwin]: Don't add -model,
>       -arch, -isysroot to $compiler_flags if already in $CC with same
>       arguments.