[Bug ada/43731] New: Missing ada multilib on i686-w64-mingw32 target

[dougsemler at gmail dot com]

When compiling a Win64 i686-w64-mingw32 compiler with multilib, ada fails to
build with similar errors as reported in
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37993  There is currently no
selection on the i686 side for multilib, as the gcc/gcc-interface/ada Makefile
assumes that no ix86 mingw* targets may be compiled multilib.

This can be fixed with something similar to the following trivial patch:

diff a/gcc/ada/gcc-interface/Makefile.in b/gcc/ada/gcc-interface/Makefile.in
--- a/gcc/ada/gcc-interface/Makefile.in
+++ b/gcc/ada/gcc-interface/Makefile.in
@@ -1649,8 +1649,13 @@ ifeq ($(strip $(filter-out cygwin32% mingw32%
pe,$(osys))),)
       LIBGNAT_TARGET_PAIRS += \
         system.ads<system-mingw-x86_64.ads
     else
-      LIBGNAT_TARGET_PAIRS += \
-        system.ads<system-mingw.ads
+      ifeq ($(strip $(MULTISUBDIR)),/64)
+        LIBGNAT_TARGET_PAIRS += \
+          system.ads<system-mingw-x86_64.ads
+      else
+        LIBGNAT_TARGET_PAIRS += \
+          system.ads<system-mingw.ads
+      endif
     endif

     EXTRA_GNATRTL_NONTASKING_OBJS = \


-- 
           Summary: Missing ada multilib on i686-w64-mingw32 target
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ada
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dougsemler at gmail dot com
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: i686-w64-mingw32


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43731