Original patch from Gentoo:
gentoo/src/patchsets/binutils/2.19/42_all_012_check_ldrunpath_length.patch

Originaly from Debian:
## 012_check_ldrunpath_length.dpatch by Chris Chimelis <chris@debian.org>
##
## All lines beginning with `## DP:' are a description of the patch.
## DP: Only generate an RPATH entry if LD_RUN_PATH is not empty, for
## DP: cases where -rpath isn't specified. (#151024)

diff -durN binutils-2.19.orig/ld/emultempl/elf32.em binutils-2.19/ld/emultempl/elf32.em
--- binutils-2.19.orig/ld/emultempl/elf32.em	2008-09-07 06:02:31.000000000 +0200
+++ binutils-2.19/ld/emultempl/elf32.em	2008-11-23 16:25:51.000000000 +0100
@@ -1219,6 +1219,8 @@
 	      && command_line.rpath == NULL)
 	    {
 	      lib_path = (const char *) getenv ("LD_RUN_PATH");
+	      if ((lib_path) && (strlen (lib_path) == 0))
+		  lib_path = NULL;
 	      if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
 						      force))
 		break;
@@ -1404,6 +1406,8 @@
   rpath = command_line.rpath;
   if (rpath == NULL)
     rpath = (const char *) getenv ("LD_RUN_PATH");
+  if ((rpath) && (strlen (rpath) == 0))
+      rpath = NULL;
   if (! (bfd_elf_size_dynamic_sections
 	 (link_info.output_bfd, command_line.soname, rpath,
 	  command_line.filter_shlib,