Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> writes:
> On 2020-09-02 22:43, Jesse Zhang wrote:
>> | conftest.c:184:3: error: implicitly declaring library function
>> 'exit' with type 'void (int) __attribute__((noreturn))'
>> [-Werror,-Wimplicit-function-declaration]
> Where did the -Werror come from?
Peter wasn't entirely explicit here, but note the advice at the end of
https://www.postgresql.org/docs/devel/install-procedure.html
that you cannot include -Werror in any CFLAGS you tell configure
to use. It'd be nice if autoconf was more robust about that,
but it is not our bug to fix.
regards, tom lane