[MLton] MacOS linking broken?

[John Reppy]

It appears to be even stranger.  I grabbed the generated C and  
assembly files from the two compilers and
compiled and linked them by hand.  In both cases it works, but when I  
use mlton, it doesn't work.  The
commands I use by hand are the same as what is produces by the - 
verbose flag (except that I'm not using
/tmp for the object files).  Is it possible that what is getting  
echoed to the terminal is not what is
actually getting executed?

	- John

On Dec 7, 2006, at 9:57 AM, Matthew Fluet wrote:

>
>> It appears that linking MLton programs with Mac OS X frameworks is  
>> broken in the latest SVN revision (it was working in r4796).  When  
>> I try to compile a program that compiled before, I get errors like  
>> the following:
>>
>> /usr/bin/ld: Undefined symbols:
>> _glBegin
> ...
>
>> Did something change in the compiler that might account for this  
>> problem? The actual linking commands look almost identical:
>
> There was a big merge of changes to the runtime (and some  
> consequent changes to the implementation of the Basis Library), but  
> I wouldn't have expected this to affect linking behavior.
>
>> OLD:
>>      gcc -o triangle /tmp/fileeUELQt.o /tmp/filegsk2yH.o \
>>          /Users/jhr/Work/hacking/sml3d/glut/glut-glue.o \
>>          -L/Users/jhr/Work/mlton/mlton.OLD/build/lib/self -lmlton - 
>> L/sw/lib \
>>          -lgmp -lgdtoa -lm -framework GLUT -framework OpenGL - 
>> framework \
>>          Foundation
>>
>> NEW:
>>      gcc -o triangle /tmp/fileZ7FdMM.o /tmp/fileL3aAgK.o \
>>          /Users/jhr/Work/hacking/sml3d/glut/glut-glue.o \
>>          -L/Users/jhr/Work/mlton/mlton/build/lib/self -lmlton -L/ 
>> sw/lib \
>>          -lgdtoa -lm -lgmp \
>>          -framework GLUT -framework OpenGL -framework Foundation
>
> I note that if you compile with -keep o and then replicate the gcc  
> linking line at your shell, then the linking succeeds; so, it looks  
> like the call to gcc is being messed up somehow, probably in the  
> way arguments are being passed.  I'll investigate.
>
>