Le 28/01/2012 00:30, Bruce Dubbs a écrit :
> Pierre Labastie wrote:
>> Well, the reason why grub does not find liblzma is much simpler
>> anyway: grub is built before xz!
>
> It should find xz from Chapter 5. The liblzma.so.5.0.3 is in /tools and
> it does have the lzma_code reference.
>
> There are a few ways to fix this. The easiest is to add /tools to a
> LIBRARY_PATH environment variable. We could also just append
> #define HAVE_LIBLZMA 1">>confdefs.h
> after configure in GRUB.
I tried that, but the difference is the same with or without
the #define (do not focus
on the libraries found, I use ldd on the host, focus
only on what libraries are searched):
pierre@turboli:ldd iteration-1/usr/bin/grub-mkimage
linux-vdso.so.1 => (0x00007fff18571000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fdd646b4000)
/lib64/ld-linux-x86-64.so.2 (0x00007fdd64a5c000)
pierre@turboli:ldd iteration-2/usr/bin/grub-mkimage
linux-vdso.so.1 => (0x00007fffce4c5000)
liblzma.so.5 => /usr/lib/x86_64-linux-gnu/liblzma.so.5
(0x00007f6eda553000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f6eda1cf000)
librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f6ed9fc6000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007f6ed9daa000)
/lib64/ld-linux-x86-64.so.2 (0x00007f6eda79a000)
I have not tried to add /tools to a LIBRARY_PATH, because I am
(maybe wrongly) worried about linking to a libraries which are
then removed.
> We could also move xz to be before GRUB.
Not tried either, but this should work
> The kernel creates the compressed boot images. GRUB only copies a set
> of bits into memory. I think GRUB wants xz to access a potential
> compressed file system.
As far as I understand the docs, in grub2, there are boot images
<file>.img created by grub, besides the bits copied to the MBR.
Those can be compressed, but the size is not very high anyway
regards,
Pierre
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