[Bug ada/42554] Can't build GNAT tools

[howarth at nitro dot med dot uc dot edu]

------- Comment #11 from howarth at nitro dot med dot uc dot edu  2010-02-02 22:55 -------
Building gcc trunk with...

Index: configure
===================================================================
--- configure   (revision 156440)
+++ configure   (working copy)
@@ -7292,7 +7292,7 @@
     extra_arflags_for_target=" -X32_64"
     extra_nmflags_for_target=" -B -X32_64"
     ;;
-  *-*-darwin*)
+  *-*-darwin[89]*)
     # ranlib from Darwin requires the -c flag to look at common symbols.
     extra_ranlibflags_for_target=" -c"
     ;;

on x86_64-apple-darwin10 doesn't produce any regressions...

http://gcc.gnu.org/ml/gcc-testresults/2010-02/msg00168.html

I am checking with Mike Stump but I suspect that the requirement of -c with
ranlib
is a depreciated 'feature' from earlier Xcode. In particular, the comments in
the ranlib
manpage on darwin10....

       -c     Include  common symbols as definitions with respect to the table
              of contents.  This is seldom the intended behavior  for  linking
              from  a  library,  as  it forces the linking of a library member
              just because it uses an uninitialized global that  is  undefined
              at  that  point  in  the  linking.  This option is included only
              because this was the original behavior of ranlib.   This  option
              is not the default.

suggest that this is feature being depreciated out.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42554