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Re: [PATCH, i386, Android] -mandroid support for i386 target


> On 3/04/2012, at 2:16 AM, Ilya Enkovich wrote:
>
>>>
>>> The point is that one can build a toolchain for i686-linux-gnu that will support both 32-bit and 64-bit multilibs. ?The 32-bit multilib will be used by default, and compilation for 64-bit user-space can be requested with -m64 option. ?Even though Android is not supported for -m64, such a toolchain can support Android as a additional "-m32 -mandroid" multilib. ?I.e., the toolchain will have three multilibs in total: "-m32" (default), "-m64" and "-m32 -mandroid". ?I386/linux64.h will be picked up for such a toolchain, even though by default it would compile for 32-bit target. ?Does this clear up things?
>>>
>>
>> I think I see your point. And it seems to make all this work I'll also
>> have to rename i386/gnu-user.h into i386/gnu-user32.h and create
>> i386/gnu-user.h with common definitions to be included by
>> gnu-user[32|64].h. Otherwise I wont be able to use some definitions
>> (i.e. GNU_USER_TARGET_LINK_SPEC and GNU_USER_TARGET_MATHFILE_SPEC) in
>> linux64.h. Right?
>
> It's simpler that you think. ?The target headers ($tm_file in config.gcc -- gnu-user.h, linux*.h, etc. in this case) are all included into tm.h, which serves as proxy to all those headers. ?All definitions made in preceding headers are available in subsequent headers. ?So, given that i386/gnu-user*.h precedes i386/linux*.h in config.gcc's $tm_file, you only need to touch linux*.h.
>
> Thanks,
>
> --
> Maxim Kuvyrkov
> CodeSourcery / Mentor Graphics
>


Hi,

I prepared version with common linux.h and gnu-user.h. Does it look OK?

Bootstrapped and checked on linux-x86_64.

Thanks,
Ilya
---
2012-04-03  Enkovich Ilya  <ilya.enkovich@intel.com>

	* config/i386/linux.h: Renamed to ...
	* config/i386/linux32.h: ... this.

	* config/i386/gnu-user.h: Renamed to ...
	* config/i386/gnu-user32.h: ... this.
	(CPP_SPEC): Remove.
	(CC1_SPEC): Remove.
	(ENDFILE_SPEC): Remove.
	(GNU_USER_TARGET_LINK_SPEC): New.
	(LINK_SPEC): Use GNU_USER_TARGET_LINK_SPEC.

	* config.gcc: Rename i386/linux.h to i386/linux32.h and
	i386/gnu-user.h to i386/gnu-user32.h.

	* config/i386/linux.h: New.

	* config/i386/gnu-user.h: New.

	* config/i386/linux64.h: Include i386/linux.h.

	* config/i386/gnu-user64.h: Include i386/gnu-user.h
	(CPP_SPEC): Remove.
	(CC1_SPEC): Remove.
	(ENDFILE_SPEC): Remove.
	(GNU_USER_TARGET_LINK_SPEC): New.
	(LINK_SPEC): Use GNU_USER_TARGET_LINK_SPEC.

Attachment: mandroid.patch
Description: Binary data


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