I am trying to build GDC on AIX (PowerPC) using GCC 3.3.3.

When I get to libphobos it stops with the configuration error

	checking for __libc_stack_end: no
	no usable data segment information

There is no reference to __libc_stack_end in AIX libc.a

Is there a way around this? Has anyone tried gdc on AIX?

I looked at the code in libphobos and it seems that it caters for alternative strategies to obtain the stack base but I am not sure how to cleanly hack into it and bypass the checks in the m4 config files.

Some people on the net have suggested that environ (extern char**environ) is a reasonable choice for a stack end value on most UNIX systems. Any suggestion as to how I could try that?

John

John Gibbons wrote:
> I am trying to build GDC on AIX (PowerPC) using GCC 3.3.3.
> 
> When I get to libphobos it stops with the configuration error
> 
>     checking for __libc_stack_end: no
>     no usable data segment information
> 
> There is no reference to __libc_stack_end in AIX libc.a
> 
> Is there a way around this? Has anyone tried gdc on AIX?
> 
> I looked at the code in libphobos and it seems that it caters for alternative strategies to obtain the stack base but I am not sure how to cleanly hack into it and bypass the checks in the m4 config files.
> 
> Some people on the net have suggested that environ (extern char**environ) is a reasonable choice for a stack end value on most UNIX systems. Any suggestion as to how I could try that?
> 
> John

There is, in fact, a fallback option for detecting the end of the stack.  The problem is the static data segment.  I have attached a patch for AIX  (AIX 5?).  I have not been able to test it yet, but it should work.

David

David,

I could not find the attached patch.

Thanks in advance

John


David Friedman wrote:
> John Gibbons wrote:
> 
>> I am trying to build GDC on AIX (PowerPC) using GCC 3.3.3.
>>
>> When I get to libphobos it stops with the configuration error
>>
>>     checking for __libc_stack_end: no
>>     no usable data segment information
>>
>> There is no reference to __libc_stack_end in AIX libc.a
>>
>> Is there a way around this? Has anyone tried gdc on AIX?
>>
>> I looked at the code in libphobos and it seems that it caters for alternative strategies to obtain the stack base but I am not sure how to cleanly hack into it and bypass the checks in the m4 config files.
>>
>> Some people on the net have suggested that environ (extern char**environ) is a reasonable choice for a stack end value on most UNIX systems. Any suggestion as to how I could try that?
>>
>> John
> 
> 
> There is, in fact, a fallback option for detecting the end of the stack.  The problem is the static data segment.  I have attached a patch for AIX  (AIX 5?).  I have not been able to test it yet, but it should work.
> 
> David
> 

John Gibbons wrote:

Sorry, I left it out of the earlier post.

I was finally able to test it myself, but I found there is a lot more that needs to be fixed for AIX.  I'll post something once I get it working.

David

> David,
> 
> I could not find the attached patch.
> 
> Thanks in advance
> 
> John
> 
> 
> David Friedman wrote:
> 
>> John Gibbons wrote:
>>
>>> I am trying to build GDC on AIX (PowerPC) using GCC 3.3.3.
>>>
>>> When I get to libphobos it stops with the configuration error
>>>
>>>     checking for __libc_stack_end: no
>>>     no usable data segment information
>>>
>>> There is no reference to __libc_stack_end in AIX libc.a
>>>
>>> Is there a way around this? Has anyone tried gdc on AIX?
>>>
>>> I looked at the code in libphobos and it seems that it caters for alternative strategies to obtain the stack base but I am not sure how to cleanly hack into it and bypass the checks in the m4 config files.
>>>
>>> Some people on the net have suggested that environ (extern char**environ) is a reasonable choice for a stack end value on most UNIX systems. Any suggestion as to how I could try that?
>>>
>>> John
>>
>>
>>
>> There is, in fact, a fallback option for detecting the end of the stack.  The problem is the static data segment.  I have attached a patch for AIX  (AIX 5?).  I have not been able to test it yet, but it should work.
>>
>> David
>>