[ipxe-devel] make giving segfault

[Christian Hesse]

"brent s." <bts at square-r00t.net> on Mon, 2017/10/02 13:23:
> On 10/02/2017 11:06 AM, Michael Brown wrote:
> > On 01/10/17 17:02, brent s. wrote:  
> >>>    [LD] bin/usbdisk.bin
> >>> make: *** [arch/x86/Makefile.pcbios:116: bin/usbdisk.bin] Segmentation
> >>> fault (core dumped)
> >>> make: *** Deleting file 'bin/usbdisk.bin'
> >>> rm bin/version.ipxe.dsk.o bin/ipxe.dsk.bin bin/ipxe.lkrn.zbin
> >>> bin/ipxe.dsk.zinfo bin/ipxe.lkrn.zinfo bin/ipxe.dsk.zbin
> >>> bin/version.ipxe.lkrn.o bin/ipxe.lkrn.bin  
> > 
> > If you add V=1 to the make command line then you'll see the actual
> > command that is being executed.  You can then try variations on this
> > command (or on its input files) to see if you can find the root cause of
> > the gcc segfault.
> > 
> > Michael  
> 
> Thanks, Michael. It seems to be the linking throwing the segfault
> (reformatted for readability):
> 
> ld \
>   -m elf_i386 \
>   -N --no-check-sections \
>   --section-start=.prefix=0 \
>   --gc-sections \
>   -static \
>   -o bin/usbdisk.bin \
>   --oformat binary \
>   -e 0 \
>   bin/usbdisk.o
> 
> I've attached an strace, which I hope helps, but unfortunately I don't
> know C so I'm not sure how else I can help.

This is a binutils issue, I could successfully build iPXE after downgrading
binutils to version 2.28.0-4. I did no further investigation, though.
-- 
main(a){char*c=/*    Schoene Gruesse                         */"B?IJj;MEH"
"CX:;",b;for(a/*    Best regards             my address:    */=0;b=c[a++];)
putchar(b-1/(/*    Chris            cc -ox -xc - && ./x    */b/42*2-3)*42);}
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