Due to the change given below. Ada compiler under all platforms is no longer
able to build libraries. The path to TOOLS_TARGET_PAIRS is incorrect in
gnattools/Makefile.in resulting in the use of the dummy mlib-tgt-specific.adb
for all platforms.

------------------------------------------------------------------------
r144463 | schwab | 2009-02-27 10:54:25 +0100 (Ven, 27 fév 2009) | 12 lines

gnattools/:
        * Makefile.in (fsrcdir): Point to gcc directory, not gcc/ada.
        (INCLUDES_FOR_SUBDIR): Adjust.
        (ADA_INCLUDES_FOR_SUBDIR): Adjust.


-- 
           Summary: Ada compiler unable to build libraries
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ada
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bechir dot zalila at gmail dot com
 GCC build triplet: all
  GCC host triplet: all
GCC target triplet: all


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40166