[Bug libfortran/17748] New: libgfortran contains undefined references to _environ

["peter at pogma dot com" <gcc-bugzilla at gcc dot gnu dot org>]

libgfortran references environ which is not available to shared libraries directly on darwin. This means 
that we can not build fortran shared libraries without undefined symbols.

The solution is to use crt_externs.h and #define environ (*_NSGetEnviron()) in libgfortran/runtime/
environ.c.

-- 
           Summary: libgfortran contains undefined references to _environ
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libfortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: peter at pogma dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: powerpc-apple-darwin
  GCC host triplet: powerpc-apple-darwin
GCC target triplet: powerpc-apple-darwin


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17748