id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12863	some API detection #ifdefs not valid	danalbert@…	chris_kohlhoff	"There are a couple of guards checking for APIs that are quite fragile and do not work with the latest Android NDK: (your spam detection captcha isn't working, it's issue #302 on the android-ndk/ndk github project)

The first is assuming `cfsetspeed` is available if `_BSD_SOURCE` is set: https://github.com/boostorg/asio/blob/develop/include/boost/asio/impl/serial_port_base.ipp#L117

`_BSD_SOURCE` is something the user defines if they want access to the BSD extensions, and indicates nothing about what the implementation provides.

Second is guarding `epoll_create1` based on the presence of `EPOLL_CLOEXEC`: https://github.com/boostorg/asio/blob/develop/include/boost/asio/detail/impl/epoll_reactor.ipp#L462

This breaks implementations like the following:

{{{
#define EPOLL_CLOEXEC O_CLOEXEC
int epoll_create1(int) __attribute__((availability(android,introduced=21)));
}}}

(Android here is just an example, this could well be the case on other platforms)"	Bugs	new	To Be Determined	asio	Boost 1.61.0	Problem			danalbert@…