Alfred Perlstein <bright(at)wintelcom(dot)net> writes:
> Shouldn't configure look for the pre-generated file when the test for
> bison fails?
No, I don't think so. At least not that way: what you'd need to
discover is not only whether gram.c exists but whether it is newer
than all its prerequisite files.
Besides, I think the warning message is appropriate in any case, since
it lets bison-less people know that they had better not blow away gram.c
or hack on gram.y.
regards, tom lane