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$NetBSD: patch-gcc_config_sol2.h,v 1.1 2014/05/10 14:14:59 richard Exp $
--- gcc/config/sol2.h.orig 2013-01-10 20:38:27.000000000 +0000
+++ gcc/config/sol2.h
@@ -171,12 +171,20 @@ along with GCC; see the file COPYING3.
#define RDYNAMIC_SPEC "--export-dynamic"
#endif
+#ifndef USE_GLD
+/* With Sun ld, use mapfile to enforce direct binding to libgcc_s unwinder. */
+#define LINK_LIBGCC_MAPFILE_SPEC "-M %slibgcc-unwind.map"
+#else
+/* GNU ld doesn't support direct binding. */
+#define LINK_LIBGCC_MAPFILE_SPEC ""
+#endif
+
#undef LINK_SPEC
#define LINK_SPEC \
"%{h*} %{v:-V} \
%{!shared:%{!static:%{rdynamic: " RDYNAMIC_SPEC "}}} \
%{static:-dn -Bstatic} \
- %{shared:-G -dy %{!mimpure-text:-z text}} \
+ %{shared:-G -dy %{!mimpure-text:-z text} " LINK_LIBGCC_MAPFILE_SPEC "} \
%{symbolic:-Bsymbolic -G -dy -z text} \
%(link_arch) \
%{Qy:} %{!Qn:-Qy}"
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