jerry-123123

WITH_CURL off still tries to include curl.h

2

[`#cmakedefine01`](https://github.com/confluentinc/librdkafka/blob/master/packaging/cmake/config.h.in#L31) (in `config.h.in`) sets `WITH_OAUTHBEARER_OIDC` as either 0 (when disabled) or 1 (when enabled). The problem is that `#ifdef` checks if a symbol is defined, not its value. So [`#ifdef...