From http://www.mail-archive.com/pld-cvs-commit@pld-linux.org/msg00229.html

Fixes

  rtld.c: In function '_dl_start':

  dynamic-link.h:47: error: nested function 'elf_machine_rela_relative' declared but never defined

  dynamic-link.h:41: error: nested function 'elf_machine_rela' declared but never defined

when compiling glibc-2.3.4 with gcc-4.0

But see also

http://sources.redhat.com/ml/libc-hacker/2005-02/msg00000.html

and

http://sources.redhat.com/ml/libc-hacker/2005-03/msg00008.html

which seem to propose less radical fixes?

Aha.  See also http://sources.redhat.com/bugzilla/show_bug.cgi?id=721

--- glibc-2.3.6.orig/elf/dynamic-link.h	2005-03-12 18:12:37.000000000 -0800

+++ glibc-2.3.6/elf/dynamic-link.h	2005-03-12 18:12:59.777820848 -0800

@@ -19,47 +19,6 @@

 #include <elf.h>

 #include <assert.h>

-

-#ifdef RESOLVE

-/* We pass reloc_addr as a pointer to void, as opposed to a pointer to

-   ElfW(Addr), because not all architectures can assume that the

-   relocated address is properly aligned, whereas the compiler is

-   entitled to assume that a pointer to a type is properly aligned for

-   the type.  Even if we cast the pointer back to some other type with

-   less strict alignment requirements, the compiler might still

-   remember that the pointer was originally more aligned, thereby

-   optimizing away alignment tests or using word instructions for

-   copying memory, breaking the very code written to handle the

-   unaligned cases.  */

-# if ! ELF_MACHINE_NO_REL

-auto inline void __attribute__((always_inline))

-elf_machine_rel (struct link_map *map, const ElfW(Rel) *reloc,

-		 const ElfW(Sym) *sym, const struct r_found_version *version,

-		 void *const reloc_addr);

-auto inline void __attribute__((always_inline))

-elf_machine_rel_relative (ElfW(Addr) l_addr, const ElfW(Rel) *reloc,

-			  void *const reloc_addr);

-# endif

-# if ! ELF_MACHINE_NO_RELA

-auto inline void __attribute__((always_inline))

-elf_machine_rela (struct link_map *map, const ElfW(Rela) *reloc,

-		  const ElfW(Sym) *sym, const struct r_found_version *version,

-		  void *const reloc_addr);

-auto inline void __attribute__((always_inline))

-elf_machine_rela_relative (ElfW(Addr) l_addr, const ElfW(Rela) *reloc,

-			   void *const reloc_addr);

-# endif

-# if ELF_MACHINE_NO_RELA || defined ELF_MACHINE_PLT_REL

-auto inline void __attribute__((always_inline))

-elf_machine_lazy_rel (struct link_map *map,

-		      ElfW(Addr) l_addr, const ElfW(Rel) *reloc);

-# else

-auto inline void __attribute__((always_inline))

-elf_machine_lazy_rel (struct link_map *map,

-		      ElfW(Addr) l_addr, const ElfW(Rela) *reloc);

-# endif

-#endif

-

 #include <dl-machine.h>

 #ifndef VERSYMIDX

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>