Re: Report: compil error on OSX for target=i386

[Yves Blusseau]

Le 8 sept. 09 à 16:41, Robert Millan a écrit :

On Sun, Sep 06, 2009 at 08:56:59PM +0200, Yves Blusseau wrote:

Bad news grub not compiled on a GCC 4.4.1 from MacPorts:


Wall -W  -Wall -W -Wshadow -Wpointer-arith -Wmissing-prototypes

-falign-functions=1 -fno-dwarf2-cfi-asm -DAPPLE_CC=1 -m32

-m32 -MD -c -o linux_mod-loader_i386_linux.o loader/i386/linux.c
20:16loader/i386/linux.c: In function 'grub_linux_boot':
20:16loader/i386/linux.c:546: error: can't find a register in class
'BREG' while reloading 'asm'
20:16loader/i386/linux.c:546: error: 'asm' operand has impossible
constraints
20:16make: * [linux_mod-loader_i386_linux.o] Error 1


is coded somewhere in the gcc source code.

gcc-mp-4.4 -Iloader/i386 -I./loader/i386 -I. -I./include -I./ include - -Wundef -Wstrict-prototypes -g -Os -falign-jumps=1 -falign- loops=1 -fno-stack-protector -mno-stack-arg-probe -fno-builtin -mrtd - mregparm=3 MacPorts don't use specific patch to build gcc so i think the behavior

I guess that's the implicit -fPIC you mentioned on IRC?

Does -fno-PIC help?

http://gandalf.zetam.org/dropzone/Screenshot%202009-09-08%2019h%2037m%2007s.png

Regards,
Yves Blusseau

Yes with -fno-PIC grub compile with gcc-mp-4.4 but do not generate a good boot.img and/or core.img:

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