Z:gnu-www-ja-gcc-exception-3.1-faq--7d96d4-If you did use GPL-incompatibl/en

If you did use GPL-incompatible software in conjunction with GCC during the Compilation Process, you would not be able to take advantage of this permission. Since all of the object code that GCC generates is derived from these GPLed libraries, that means you would be required to follow the terms of the GPL when propagating any of that object code. You could not use GCC to develop your own GPL-incompatible software.