Certainly. Any compile-and-link tests won't work.
I'm sorry, I missed the "and link" part of your question. Configury
tests of this kind really aren't going to work. For things like tests
for PIC, it's pointless: gcj supports the same options as gcc.
Then, does anybody know the very reason why all those tests are run
repeatedly for each language?
I will guess. It is because the C/C++/Java/Fortran/.. compilers may
not come from the same gcc version or based on gcc at all.
Okay, so we have a problem. Because the patch you are proposing will
not be accepted in any way by upstream. :-(
Paolo