Question regarding g++ and GPL in my own project

["Michael Stather" <michaelstather at nuzi dot de>]

Hi,
 
I´ve a little question concerning the license of gcc:
 
I plan to develop a game-making system consisting of an IDE and gcc.
I´ll develop an engine which translates the source from a BASIC-style
language into c++ and then compiles them using g++.
GCC resides in an extra dir in the distribution and only called through the
IDE via commandline and it´s results are read (mainly because I don´t want
to dig into the
g++ source) by the IDE. So I simply use a regular distribution or a CVS
version of g++.
My question is, does the GPL permit to sell the final product without
releasing the source for my Basic<->C++ engine or the IDE, assuming that
they aren´t linked via the source to each other
and theoretically it´s possible to use any other compiler?
Am I wrong in thinking that when using parts of the source of gcc then I
need to publish the whole sourcecode. What I develop is the converting
engine which just needs a c++-compiler to compile
the generated code, and isn´t woven into g++.
I respect the idea of open-source and want to clarify this before starting
(perhaps the product will be open-source, too)
 
 
regards and thanks for developing gcc
 
Michael