[RFC PATCH] Enabling ld -r ELF .stab/.stabstr optimization

[Earl Chew <earl_chew at agilent dot com>]

Here is a patch to enable .stab/.stabstr optimization in the presence
of ld -r. This patch was generated against binutils-2.10.1 --- sorry
the baseline is a little dated, but that's what I'm running.

        * bfd/elflink.h (elf_link_add_object_symbols): optimize .stabstr
        even if relocatable
        * ld/ldlang.c (wild_doit): discard debugging sections that have
        been marked SEC_EXCLUDE

--- elflink.h	Mon Oct 22 21:45:07 2001
+++ ../../xbinutils/bfd/elflink.h	Wed Sep 25 14:50:07 2002
@@ -2005,10 +2005,9 @@
 	}
     }

-  /* If this is a non-traditional, non-relocateable link, try to
-     optimize the handling of the .stab/.stabstr sections.  */
+  /* If this is a non-traditional link try to optimize the handling
+     of the .stab/.stabstr sections.  */
   if (! dynamic
-      && ! info->relocateable
       && ! info->traditional_format
       && info->hash->creator->flavour == bfd_target_elf_flavour
       && (info->strip != strip_all && info->strip != strip_debugger))

--- ldlang.c	Thu Oct 25 10:52:25 2001
+++ ../../xbinutils/ld/ldlang.c	Wed Sep 25 21:28:37 2002
@@ -1101,9 +1101,11 @@
     discard = true;

   /* Discard debugging sections if we are stripping debugging
-     information.  */
-  if ((link_info.strip == strip_debugger || link_info.strip == strip_all)
-      && (flags & SEC_DEBUGGING) != 0)
+     information or if marked with SEC_EXCLUDE.  */
+  if ((flags & SEC_DEBUGGING) != 0
+      && (link_info.strip == strip_debugger
+          || link_info.strip == strip_all
+          || (flags & SEC_EXCLUDE) != 0))
     discard = true;

   if (discard)