Bug#358559: madwidi-source: Fails to build kernel module on mipsel

[Aurelien Jarno]

Thiemo Seufer a écrit :
> On Fri, Mar 24, 2006 at 06:41:32PM +0100, Aurelien Jarno wrote:
> [snip]
> 
>>>>Hmm, you select the hal.o file accordingly?  Won't mips1-le-elf work
>>>>on both R1 and R2?  Checking for R1/R2 doesn't seem ideal to me if it
>>>>can be avoided.
>>>>
>>>>Thiemo, any comment?
>>>
>>>
>>>At least for 32bit kernels this looks like a viable option, if the hal
>>>layer is sufficiently simple (i.e. no dependency to kernel headers).
>>>
>>>Same for 64bit kernels and MIPS-III.
>>
>>So in short we could use mipsisa32-{be,le}-elf on all machines but the 
>>one that have CONFIG_CPU_MIPS32_R1 or CONFIG_CPU_MIPS32_R2 set to one. 
>>Am I right?
> 
> 
> Erm, depends on what "mipsisa32" selects in that case.
> The compatibility tree is:
> 
>                 / -> MIPS-III -> MIPS-IV -> MIPS64 -> MIPS64R2  # 64bit
>                 |                             ^          ^
> 		|                             |          |
> MIPS-I -> MIPS-II ------------------------> MIPS32 -> MIPS32R2  # 32bit
> 
> so you need MIPS-I for 32bit Kernels and MIPS-III for 64bit kernels.
> For the current compilers in Debian this can be selected via
> -march=mips1 and -march=mips3 respectively.
> 
> Calling a file mipsisa32 when it selects mips1 sounds like a horrible
> case of obfuscation. :-)
> 

Does this help to determine the right file to use?

mips1-le-elf.hal.o.uu: ELF 32-bit LSB relocatable, MIPS, MIPS-I version 
1 (SYSV), not stripped
mips-le-elf.hal.o.uu: ELF 32-bit LSB relocatable, MIPS, MIPS-II version 
1 (SYSV), not stripped
mipsisa32-le-elf.hal.o.uu: ELF 32-bit LSB relocatable, MIPS, MIPS-III 
version 1 (SYSV), not stripped

Thanks,
Aurelien

-- 
   .''`.  Aurelien Jarno	            | GPG: 1024D/F1BCDB73
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