The answer is yes. The interpreter is GPL, the programs it runs need not be. GCC and related projects usually have license clauses to explicitly confirm this,

The answer is yes. The interpreter is GPL, the programs it runs need not be. GCC and related projects usually have license clauses to explicitly confirm this, for example https://www.gnu.org/licenses/gcc-exception-faq.html https://www.gnu.org/licenses/gcc-exception-faq.html