> From: mlh@goathill.org (MLH)
> 
>> 
>> Try updating to libtool-1.5nb2 per pkg/22810.  I did this and was able to
>> finally build and install fontconfig, just now.
>> 
>> I'll be compiling more against this particular libtool-1.5nb2 tonight-- even
>> if it's not supposed to be in-tree yet-- mainly because I don't really have
>> anything to lose, and it appears to work.
>> 
>> --David
> 
>[...]
> checking for C compiler default output... configure: error: C compiler cannot
> create executables
> *** Error code 77

Apropos this very thread.  Did you change "_OPSYS_RPATH_NAME = -L" to
"_OPSYS_RPATH_NAME = -R" in defs.Darwin.mk?

--David