seebs@seebs.net writes:
> Your modified acx_pthread.m4 tests for any compiler output to stderr at all,
> and considers it evidence that a flag is invalid.
I believe the reason we do that is that we want to find flags that will
not result in the compiler generating a warning during each and every
source compile. Most developers would consider such a behavior broken,
and not without good reason.
> This test is not actually correct, although it usually works.
[ shrug... ] Given the lack of previous complaints, it works 99.999%
of the time, which is about as much reliability as can be hoped for in
most autoconf tests :-(. I'm afraid we can't help you without breaking
it worse for a larger number of other people.
regards, tom lane