🚀 go-pugleaf

My goal is to call a C function which calls a C++ function (that uses C++
classes) from Scheme Toolkit (STk).  STk allows its scheme vocabulary to be
extended to call C functions by dynamically loading a shared object file.
I have accomplished this by writing a C program, compiling with gcc, 
creating a shared object file with 'ld', and loading to STk.  Then I created
some C++ functions that access C++ classes.  I wrapped them in 'extern "C" {}'
so that the names would not be mangled.  I can compile this with g++,
compile C routines to call them with gcc, and link with gcc.  My executable
calls the C++ routines with no difficulty.  Then, instead of linking with
gcc, I used 'ld' to create a shared object.  When I try to load this to
STk, I get the message 
	'ld.so: Undefined symbol: ___builtin_new

I tried to find out where g++ links to ___builtin_new so that I could 
explicitly link to this, but when I run 'nm' on the libg++.a, I see that
all instances of ___builtin_new are undefined.  

Where does g++ build the link to ___builtin_new?  Is it in-lined?  Do you
have any suggestions for me?  I have tried to ask the STk people about this,
but so far I have no solutions.  If you cannot help me, do you know who can?

Thank you very much,

Sarah Officer
officers@aries.tucson.saic.com