added support for --enable-grub-emu-modules build

kern/emu/cache.S

@@ -1,17 +0,0 @@
-#ifndef GRUB_MACHINE_EMU
-#error "This source is only meant for grub-emu platform"
-#endif
-
-#if GRUB_CPU_I386
-#elif GRUB_CPU_X86_64
-#elif GRUB_CPU_SPARC64
-#include "../sparc64/cache.S"
-#elif GRUB_CPU_MIPS
-#include "../mips/cache.S"
-#elif GRUB_CPU_MIPSEL
-#include "../mips/cache.S"
-#elif GRUB_CPU_POWERPC
-#include "../powerpc/cache.S"
-#else
-#error "No target cpu type is defined"
-#endif

kern/emu/dummy/dl.c

@@ -1,51 +0,0 @@
-/*
- *  GRUB  --  GRand Unified Bootloader
- *  Copyright (C) 2010  Free Software Foundation, Inc.
- *
- *  GRUB is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  GRUB is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <config.h>
-#include <grub/dl.h>
-
-grub_err_t
-grub_arch_dl_check_header (void *ehdr)
-{
-  (void) ehdr;
-
-  return GRUB_ERR_BAD_MODULE;
-}
-
-grub_err_t
-grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr)
-{
-  (void) mod;
-  (void) ehdr;
-
-  return GRUB_ERR_BAD_MODULE;
-}
-
-/* int */
-/* grub_dl_ref (grub_dl_t mod) */
-/* {  */
-/*   (void) mod; */
-/*   return 0; */
-/* } */
-
-/* int */
-/* grub_dl_unref (grub_dl_t mod) */
-/* {  */
-/*   (void) mod; */
-/*   return 0; */
-/* } */

kern/emu/lite.c

@@ -1,16 +0,0 @@
-#include <config.h>
-#include <grub/emu/misc.h>
-
-/* grub-emu-lite supports dynamic module loading, so it won't have any
-   embedded modules.  */
-void
-grub_init_all(void)
-{
-  return;
-}
-
-void
-grub_fini_all(void)
-{
-  return;
-}

kern/emu/main.c

@@ -27,6 +27,7 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#include <grub/dl.h>
 #include <grub/mm.h>
 #include <grub/setjmp.h>
 #include <grub/fs.h>