built without large file support

Am trying to compile grub and it is complaining that large file support is turned off and that _FILE_OFFSET_BITS=64. I guess one of these things needs to change....

From menuconfig I tried to enable large file support in the toolchain
area....no affect.

Please help...

2nd:
What do I need to do to boot linux with root filesystem in flash?

So far I created a cpio image and well that runs off of a ramdisk.

Hi,

Robert> Am trying to compile grub and it is complaining that large Robert> file support is turned off and that _FILE_OFFSET_BITS=64. I Robert> guess one of these things needs to change....

Hmm, it looks like that should be handled by grub.300-honor_UCLIBC_HAS_LFS.patch - Does that get applied?

Robert> From menuconfig I tried to enable large file support in the Robert> toolchain area....no affect.

You'll have to remove your *_build_* dirs and run make again to rebuild your toolchain with large file support.

Robert> 2nd:
Robert> What do I need to do to boot linux with root filesystem in flash?

mtd + filesystem support in your kernel and then enable cramfs/squashfs/jffs2 images under target.

Bye, Peter Korsgaard

I had a couple of problems with grub. First, not all the patches would apply, so I modified the $(GRUB_DIR)/.unpacked target to break up the patch-kernel.sh wildcard line into two separate lines:

        toolchain/patch-kernel.sh $(GRUB_DIR) target/x86/grub grub.\*.patch
        toolchain/patch-kernel.sh $(GRUB_DIR) target/x86/grub grub.\*.patch.bz2

Doing this allowed all the patches to be applied, but then I still had the LARGEFILE support issue that Robert is seeing. To fix that, I removed the grub.300-honor_UCLIBC_HAS_LFS.patch entirely (it simply didn't work even though uClibc was compiled without LARGEFILE support) and created a new patch (grub.300-LFS.patch):

@@ -18,11 +18,6 @@
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-/* Try to use glibc's transparant LFS support. */
-#define _LARGEFILE_SOURCE      1
-/* lseek becomes synonymous with lseek64.  */
-#define _FILE_OFFSET_BITS      64
-
 /* Simulator entry point. */
 int grub_stage2 (void);
 

@@ -18,11 +18,6 @@
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-/* Try to use glibc's transparant LFS support. */
-#define _LARGEFILE_SOURCE       1
-/* lseek becomes synonymous with lseek64.  */
-#define _FILE_OFFSET_BITS       64
-
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

and added the following in the grub.mk:

ifneq ($(BR2_LARGEFILE),y)
GRUB_CFLAGS+=-D_FILE_OFFSET_BITS
else
GRUB_CFLAGS+=_FILE_OFFSET_BITS=64
endif

I should probably use sed in the makefile instead of the patch above, but these changes allowed me to compile grub without LARGEFILE support.

Regards,

Nathan

-----Original Message-----
From: [email protected] [mailto:buildroot-bounces at uclibc.org] On Behalf Of Peter Korsgaard
Sent: Wednesday, July 09, 2008 10:40 AM
To: Robert B. Williams
Cc: buildroot at uclibc.org
Subject: Re: [Buildroot] built without large file support

Hi,

Robert> Am trying to compile grub and it is complaining that large Robert> file support is turned off and that _FILE_OFFSET_BITS=64. I Robert> guess one of these things needs to change....

Hmm, it looks like that should be handled by grub.300-honor_UCLIBC_HAS_LFS.patch - Does that get applied?

Robert> From menuconfig I tried to enable large file support in the Robert> toolchain area....no affect.

You'll have to remove your *_build_* dirs and run make again to rebuild your toolchain with large file support.

Robert> 2nd:
Robert> What do I need to do to boot linux with root filesystem in flash?

mtd + filesystem support in your kernel and then enable cramfs/squashfs/jffs2 images under target.

--
Bye, Peter Korsgaard
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Robert B. Williams skrev:

ONce you have changed a toolchain option, you will have to rebuild the toolchain.
It is problaby best to start with a fresh buildroot tree, and use your old .config.

BR
Ulf Samuelsson

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