[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Automake question

On 07/29/2009 10:04 AM, Sebastian Huber wrote:
> Ralf Corsepius wrote:
>> On 07/29/2009 09:44 AM, Sebastian Huber wrote:
>>> Hi,
>>>
>>> for a BSP I need to compile one module with non standard CFLAGS.
>> Why? Under normal circumstances, you don't want to do this.
>> In almost 100% of all cases, doing so is a bug.
>>
>> Ralf
>
> On the ARMv4 architecture you have two instruction sets: ARM and THUMB.  I have
> to compile one module with ARM instructions only (because some low level stuff
> requires ARM mode): CPU_FLAGS without -mthumb.  The rest of the BSP will use
> THUMB instructions: CPU_FLAGS with -mthumb.

That's your bug. Arm and thumb are different architectures, which must 
not be mixed.

Ralf