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Re: [PATCH] --build-id= none in newer ld versions PowerPC

From: Manoel Rebelo Abranches
Subject: Re: [PATCH] --build-id= none in newer ld versions PowerPC
Date: Thu, 04 Dec 2008 12:08:36 -0200

Hi made a patch to add --build-id=none to TARGET_LDFLAGS instead of
MODULE_LDFLAGS. with this it is passed to ld when linking kernel.elf.

without this kernel.elf creates a additional LOAD segment with a virtual
address in PhysAddr witch causes problem with OF and causes
grub-mkelfimage to not work correctly.

On Tue, 2008-12-02 at 13:34 -0500, Pavel Roskin wrote:
> On Tue, 2008-12-02 at 19:14 +0200, Vesa Jääskeläinen wrote:
> > No no. I mean just KERNEL_LDFLAGS like comparison to MODULE_LDFLAGS. No
> > elf or nothing like that. Is there any problem if one provides this
> > setting even on x86 if linker recognizes it? (what is being tested
> > here). PPC_BUILD_ID_FLAG just sounds too specific.
> > 
> > Isn't EFI also using ELF? I assume this would be beneficial also there.
> I agree, we should not be be multiplying hacks.  There is already code
> adding -Wl,--build-id=none to TARGET_LDFLAGS.  It's a macro
> grub_PROG_LD_BUILD_ID_NONE in aclocal.m4.  What's wrong with it?  Does
> it fail to add -Wl,--build-id=none on PowerPC or is TARGET_LDFLAGS not
> used to link kernel.elf?
> What are the symptoms caused by not using -Wl,--build-id=none?
Best Regards,

Manoel Abranches <address@hidden>
IBM Linux Technology Center Brazil

Attachment: build_id.patch
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