[patch ld/dlltool]: Allow empty LIBRARY statement in .def file

[Kai Tietz]

Hi,

this patch relax behavior of dlltool and ld about .def file parsing so
that the name of LIBRARY statement is optional.

ChangeLog

binutils/
2012-07-25  Kai Tietz

        * defparse.y (command): Call def_library only if name isn't
NULL and not empty.

ld/

2012-07-25  Kai Tietz

        * deffilep.y (command): Call def_image_name only if name isn't
NULL and not empty.

Regression tested for x86_64-w64-mingw32, i686-w64-mingw32, and
i686-pc-cygwin.  ok for apply?

Regards,
Kai

Index: defparse.y
===================================================================
RCS file: /cvs/src/src/binutils/defparse.y,v
retrieving revision 1.14
diff -u -r1.14 defparse.y
--- defparse.y  24 Feb 2012 14:20:16 -0000      1.14
+++ defparse.y  25 Jul 2012 20:56:31 -0000
@@ -52,7 +52,12 @@

 command:
                NAME opt_name opt_base { def_name ($2, $3); }
-       |       LIBRARY opt_name opt_base option_list { def_library ($2, $3); }
+       |       LIBRARY opt_name opt_base option_list
+               {
+                 /* Ignore LIBRARY without argument, or empty name.  */
+                 if ($2 && $2[0] != 0)
+                   def_library ($2, $3);
+               }
        |       EXPORTS explist
        |       DESCRIPTION ID { def_description ($2);}
        |       STACKSIZE NUMBER opt_number { def_stacksize ($2, $3);}


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