* ld.texinfo (Expression Section): Describe treatment of numbers

	and absolute symbols.
	* ldemul.c (after_open_default): Look up __ld_compatibility.
	* ldexp.c (fold_name): Convert absolute symbols to numbers when
	inside output section definitions, or when __ld_compatibility >= 221.
	(exp_fold_tree_1): Convert numbers to absolute when not in output
	section definition and __ld_compatibility < 221.  Don't always
	convert values outside an output section definition to absolute.
	* ldexp.h (uses_defined): Comment.
	* ldlang.c (ld_compatibility): New variable.
	* ldlang.h (ld_compatibility): Declare.
	* emultempl/aix.em, * emultempl/armcoff.em, * emultempl/beos.em,
	* emultempl/elf32.em, * emultempl/genelf.em, * emultempl/lnk960.em,
	* emultempl/m68kcoff.em, * emultempl/mmo.em, * emultempl/pe.em,
	* emultempl/pep.em, * emultempl/sunos.em, * emultempl/z80.em: Call
	after_open_default from after_open function.

1 files changed, 1 insertions, 0 deletions

diff --git a/ld/ldexp.h b/ld/ldexp.h
index ac73bd1..31a06ac 100644
--- a/ld/ldexp.h
+++ b/ld/ldexp.h
@@ -127,6 +127,7 @@ struct ldexp_control {
   /* Working results.  */
   etree_value_type result;
   bfd_vma dot;
+  /* Set if an expression contains DEFINED().  */
   bfd_boolean uses_defined;
 
   /* Current dot and section passed to ldexp folder.  */