[RFA]: ELF include file cleanup in linux-low.c

[dje@google.com (Doug Evans)]

Hi.

This patches replaces the use of elf files from the source tree
with system-provided elf files (per discussion with drow on irc).

Ok to check in?

Tested by running the testsuite with --target_board=native-gdbserver
with a native i686-linux configuration with a 64-bit gdb.
[As a sanity check.]

2009-12-21  Doug Evans  <dje@google.com>

	* linux-low.c: Delete inclusion of ansidecl.h, elf/common.h,
	elf/external.h.  Include <elf.h> instead but only if necessary.

Index: linux-low.c
===================================================================
RCS file: /cvs/src/src/gdb/gdbserver/linux-low.c,v
retrieving revision 1.118
diff -u -p -r1.118 linux-low.c
--- linux-low.c	21 Dec 2009 21:23:43 -0000	1.118
+++ linux-low.c	22 Dec 2009 01:40:18 -0000
@@ -19,9 +19,6 @@
 
 #include "server.h"
 #include "linux-low.h"
-#include "ansidecl.h" /* For ATTRIBUTE_PACKED, must be bug in external.h.  */
-#include "elf/common.h"
-#include "elf/external.h"
 
 #include <sys/wait.h>
 #include <stdio.h>
@@ -42,6 +39,13 @@
 #include <dirent.h>
 #include <sys/stat.h>
 #include <sys/vfs.h>
+#ifndef ELFMAG0
+/* Don't include <linux/elf.h> here.  If it got included by gdb_proc_service.h
+   then ELFMAG0 will have been defined.  If it didn't get included by
+   gdb_proc_service.h then including it will likely introduce a duplicate
+   definition of elf_fpregset_t.  */
+#include <elf.h>
+#endif
 
 #ifndef SPUFS_MAGIC
 #define SPUFS_MAGIC 0x23c9b64e
@@ -191,7 +195,7 @@ linux_child_pid_to_exec_file (int pid)
 /* Return non-zero if HEADER is a 64-bit ELF file.  */
 
 static int
-elf_64_header_p (const Elf64_External_Ehdr *header)
+elf_64_header_p (const Elf64_Ehdr *header)
 {
   return (header->e_ident[EI_MAG0] == ELFMAG0
           && header->e_ident[EI_MAG1] == ELFMAG1
@@ -207,7 +211,7 @@ elf_64_header_p (const Elf64_External_Eh
 int
 elf_64_file_p (const char *file)
 {
-  Elf64_External_Ehdr header;
+  Elf64_Ehdr header;
   int fd;
 
   fd = open (file, O_RDONLY);