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[Patch, target]: use -lobjc-gnu at 64-bit on Darwin

   The proposed patch causes libobjc-gnu to be automatically used
on Darwin at 64-bit since no 64-bit system objc runtime exists
in any currently shipping version of MacOS X. It would have been
better to do this conditionally with something like...

%{m64:%:version-compare(< 10.5 mmacosx-version-min= %{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)})}\

but the current version-compare only takes simple strings as its
third argument. Okay for gcc trunk?

2006-10-08      Jack Howarth  <>

        * config/darwin.h (LINK_SPEC): use -lobjc-gnu at 64-bit.

Index: config/darwin.h
--- config/darwin.h	(revision 117559)
+++ config/darwin.h	(working copy)
@@ -231,6 +231,7 @@ extern GTY(()) int darwin_ms_struct;
 #define LINK_SPEC  \
   "%{static}%{!static:-dynamic} \
    %{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)}\
+   %{m64:%:replace-outfile(-lobjc -lobjc-gnu)}\
    %{!Zdynamiclib: \
      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
      %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \

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