[Bug modula2/107233] gm2 build hardcodes python3

[gaius at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107233

--- Comment #3 from Gaius Mulley <gaius at gcc dot gnu.org> ---
ok, thanks for the suggestion.  I've changed gcc/configure.ac to use
AM_PATH_PYTHON and AM_CONDITIONAL:

# Python3?
AM_PATH_PYTHON(,, [:])
AM_CONDITIONAL([HAVE_PYTHON], [test "$PYTHON" != :])