Add a PT_NOTE section to mark build_id.

nacl/dyn-link/ldscripts/elf64_nacl.x

Index: nacl/dyn-link/ldscripts/elf64_nacl.x
diff --git a/nacl/dyn-link/ldscripts/elf64_nacl.x b/nacl/dyn-link/ldscripts/elf64_nacl.x
index 927cf874907b3a665caf04bb482dc7a3f2b349c8..63bb3bc9f84fa7fd31034b1ac1624a36415760b1 100644
--- a/nacl/dyn-link/ldscripts/elf64_nacl.x
+++ b/nacl/dyn-link/ldscripts/elf64_nacl.x
@@ -14,6 +14,7 @@ PHDRS
   seg_dynamic  PT_DYNAMIC FLAGS(6) ;
   seg_stack    PT_GNU_STACK FLAGS(6) ;
   seg_tls      PT_TLS FLAGS(4) ;
+  seg_note     PT_NOTE FLAGS(4) ;
 }
 SECTIONS
 {
@@ -52,7 +53,8 @@ SECTIONS
     PROVIDE_HIDDEN (__note_gnu_build_id_start = .);
     *(.note.gnu.build-id)
     PROVIDE_HIDDEN (__note_gnu_build_id_end = .);
-  } :seg_rodata
+  } :seg_rodata :seg_note
+  .dummy : {} : seg_rodata

[Mark Seaborn, 2013/08/07 16:43:07]

Make this line up with below?  Add spaces before first ":".

Add a comment: ":seg_rodata is on .dummy rather than on .hash to avoid breaking
the linker script munging that glibc's Makerules does using sed."

Same in other files.

[bradn, 2013/08/07 18:30:02]

Done.

   .hash           : { *(.hash) }
   .gnu.hash       : { *(.gnu.hash) }
   .dynsym         : { *(.dynsym) }