[Bug bootstrap/44107] libstdc++ (dylib) is built with an erroneous dependency towards /usr/lib

["mikestump at comcast dot net" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44107

--- Comment #3 from Mike Stump <mikestump at comcast dot net> 2011-03-19 09:49:35 UTC ---
> With an appropriate DYLD_LIBRARY_PATH, the problem disappears.

So, can you elaborate?  Which value makes the problem disappear?  I'd assume
you if you include $prefix/lib?

I fear this is going to be a hard bug...  If one wants any compatibility, the
routines in gcc_s from /usr/lib have to be used, in particular, the unwinder. 
But, that is exactly the thing that appears to be causing the problems.

I think we're going to need a test case, or if you could, could you try and
binary search the gcc trunk for the patch that caused this to break for you?

Also, you have this in bootstrap, does that mean that this doesn't bootstrap? 
If you could include the error messages from the bootstrap, or the name of the
gcc test case in the testsuite that is failing, that would help.

Thanks.