Unsupported relocation type: R_X86_64_PLT32

[Aleix Roca Nonell]

On Sat, Nov 03, 2018 at 01:54:39PM +0100, Aleix Roca Nonell wrote:
> Hi all!
> 
> In my attempt to write my first useful kernel patch, I'm tracking down
> a possibly kernel regression on my laptop's wireless driver. I'm
> trying to use git bisect to narrow down the problem and I'm having
> trouble compiling a Linux kernel 4.14 from Linus tree in my Arch
> Linux.
> 
> The error I'm getting is "Unsupported relocation type: R_X86_64_PLT32"
> 
> I have read about gcc enabling -fPIC by default from gcc-6 so I have
> tried compiling with gcc-{8,7,5,4.9} with and without
> "-fno-pic -no-pic" by running
> 
>   make CC="gcc-5 -fno-pic -no-pic"
> 
> with no luck. I was expecting those R_X86_64_PLT32 relocations not to
> be generated with this options but there is something I have still not
> understood.
> 
> I have been able to compile the kernel after applying greg's stable
> tree patch [1] (and [2,3] for gcc-8) but the kernel refuses to boot.
> 
> Any help/comments on either the problem or the followed methodology will be
> appreciated!
> 
> Thank you! :D
> 
> [1] - https://lore.kernel.org/patchwork/patch/892780/
> [2] - https://lore.kernel.org/patchwork/patch/868613/
> [3] - https://lore.kernel.org/patchwork/patch/934722/

Sorry, I meant "-fno-pie -no-pie" instead of "-fno-pic -no-pic"