PATCH: --with-build-sysroot, et. al.

[Geoffrey Keating]

Mark Mitchell <mark@codesourcery.com> writes:

> Geoffrey Keating wrote:
> > Mark Mitchell <mark@codesourcery.com> writes:
> >
> >>+ The GNU linker (beginning with version 2.16) has the necessary support
> >>+ for this option.  If your linker does not support this option, the
> >>+ header file aspect of @option{--sysroot} will still work, but the
> >>+ library aspect will not.
> > This is a regression on Darwin; there, -isysroot already passes
> > -syslibroot to the linker.
> 
> I didn't change anything about what -isysroot does; if on Darwin it
> has extra semantics, then it still should.  Is that not true?

The regression is that now the documentation doesn't match the
implementation...