Check LD_RUN_PATH length, copied from buildroot.

  binutils-2.18.50.0.6/ld/emultempl/elf32.em |    4     4     0     0 ++++

  1 file changed, 4 insertions(+)

 diff -durN binutils-2.18.50.0.6.orig/ld/emultempl/elf32.em binutils-2.18.50.0.6/ld/emultempl/elf32.em

 --- binutils-2.18.50.0.6.orig/ld/emultempl/elf32.em	2008-04-03 18:54:25.000000000 +0200

 +++ binutils-2.18.50.0.6/ld/emultempl/elf32.em	2008-05-02 23:30:08.000000000 +0200

 @@ -1220,6 +1220,8 @@

  	      && 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;

 @@ -1405,6 +1407,8 @@

    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,