Hi,
I should also mention that I ifdef'ed out the reed-solomon add redundancy
stuff in grub-setup (since it was causing me problems I haven't had time to
identify). You may want to try that also -- make sure you ifdef out the code
that sets the redundancy size also, otherwise, you're going to crash.
--S
Quoting Andreas Born, who wrote the following on Thu, 19 Jan 2012:
Yes, that's exactly what I tried, but apparently it doesn't work. The lowest
working value is 0x800 here.
So gcc 4.5 seems to be worse than 4.4 and 4.6 better than both.
Andreas
Am 18.01.2012 23:53, schrieb Seth Goldberg:
Hi,
Yes, I'm seeing that also. I guess version 4.5.2 of the compiler just
isn't as efficient as the most-recent GCC. I edited
include/grub/offsets.h:
And changed:
#define GRUB_KERNEL_I386_PC_NO_REED_SOLOMON_PART 0x7e0
To:
#define GRUB_KERNEL_I386_PC_NO_REED_SOLOMON_PART 0x7f0
And that was enough. phcoder posted to this list not-too-long-ago with
that suggestion for another person as well. He said you can increase it as
long as you don't do it too much and as long as the value is divisible by
8.
--S
Quoting Andreas Born, who wrote the following on Wed, 18 Jan 2012:
Hello,
having trouble building the latest bzr 3757. This happens with gcc 4.5.2
on Salix/Slackware 13.37 x86_64 system, but doesn't happen with gcc 4.6.2
on Arch Linux x86_64.
I also checked recent other reports of such problems, but wasn't able to
find a solution.
Here's some output:
gcc -Os -Wall -W -Wshadow -Wpointer-arith -Wmissing-prototypes -Wundef
-Wstrict-prototypes -g -falign-jumps=1 -falign-loops=1 -falign-functions=1
-mno-mmx -mno-sse -mno-sse2 -mno-3dnow -fno-dwarf2-cfi-asm
-fno-asynchronous-unwind-tables -m32 -fno-stack-protector
-mno-stack-arg-probe -Werror -mrtd -mregparm=3 -fno-builtin -m32
-Wl,--build-id=none -nostdlib -Wl,-N,-S -Wl,-N -Wl,-Ttext,0x6000 -o
lnxboot.image boot/i386/pc/lnxboot_image-lnxboot.o
gcc -DHAVE_CONFIG_H -I. -I.. -Wall -W -I../include -I../include
-DGRUB_MACHINE_PCBIOS=1 -DGRUB_MACHINE=I386_PC -DGRUB_TARGET_CPU_I386=1
-m32 -nostdinc -isystem
/usr/lib64/gcc/x86_64-slackware-linux/4.5.2/include
-DGRUB_FILE=\"boot/i386/pc/startup_raw.S\" -I. -I. -I.. -I.. -I../include
-I../include -g -m32 -DASM_FILE=1 -MT
boot/i386/pc/lzma_decompress_image-startup_raw.o -MD -MP -MF
boot/i386/pc/.deps-core/lzma_decompress_image-startup_raw.Tpo -c -o
boot/i386/pc/lzma_decompress_image-startup_raw.o `test -f
'boot/i386/pc/startup_raw.S' || echo './'`boot/i386/pc/startup_raw.S
reed_solomon.c: Assembler messages:
reed_solomon.c:651: Warning: ignoring changed section attributes for .text
boot/i386/pc/startup_raw.S:119: Error: attempt to move .org backwards
make[3]: *** [boot/i386/pc/lzma_decompress_image-startup_raw.o] Fehler 1
make[3]: Leaving directory
`/home/shador/projects/checkouts/grub/branches/build/grub-core'
make[2]: *** [all] Fehler 2
make[2]: Leaving directory
`/home/shador/projects/checkouts/grub/branches/build/grub-core'
make[1]: *** [all-recursive] Fehler 1
make[1]: Leaving directory
`/home/shador/projects/checkouts/grub/branches/build'
make: *** [all] Fehler 2
Regards,
Andreas Born
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