[Unison-hackers] Compiling under Mac OS X

[Benjamin Pierce]

OK, now

nm u-b.o | grep apply2

yields

000024b0 t _caml_apply2

and the corresponding bit of u-b.o-startup.s looks like this:

	.text
	.align	4
	.private_extern	_caml_apply2
_caml_apply2:
	subl	$12, %esp

I'll append the whole file, in case that's useful.

     - B

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On Jul 24, 2009, at 3:26 AM, Jerome Vouillon wrote:

> On Tue, Jul 21, 2009 at 03:17:21PM -0400, Benjamin Pierce wrote:
>>>> Undefined symbols:
>>>>  "_caml_apply2", referenced from:
>>>>      _caml_callback2_exn in libasmrun.a(i386.o)
>>>>  "_caml_apply3", referenced from:
>>>>      _caml_callback3_exn in libasmrun.a(i386.o)
>>>
>>> These symbols should come from file unison-blob.o .  You can check
>>> they are indeed defined there with the following command:
>>>
>>>> nm unison-blob.o | grep caml_apply2
>>>       0000000000005000 T caml_apply2
>>>       0000000000003ef0 T caml_apply21
>>>       0000000000003b70 T caml_apply23
>>>       00000000000037c0 T caml_apply24
>>
>> Output is a little different from yours:
>>
>>   ~/current/unison/trunk/src> nm unison-blob.o | grep caml_apply2
>>   000024b0 t _caml_apply2
>
> The symbol is local (small t).  That's why it is not used for linking.
> Now, we need to understand why.  Is it also local in u-b.o?  How is it
> defined in the assembly file?
>
> -- Jerome
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