id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
4816	[BOOST::ASIO] Under Cygwin <boost/asio.hpp> doesn't compile	frederic.jardon@…	chris_kohlhoff	"Environment: Cygwin

Compiler: gcc

== 1st issue
boost/asio.hpp includes another header making references to the 'pipe_select_interrupter' but fails to include:
boost/asio/detail/pipe_select_interrupter.hpp
Where it is effectively defined

== 2nd issue
The C function 'cfgetospeed' is referenced by:
boost/asio/impl/serial_port_base.ipp

But the inclusion of <termios.h> is not done under Cygwin and more, 
the cfgetospeed function is a macro, hence the statement on line 135 fails:

{{{
 speed_t baud = ::cfgetospeed(&storage);
}}}

== 3rd issue
boost/asio/detail/buffer_sequence_adapter.hpp

Makes references to the WSABUF structure when under Cygwin, but this structure exists only under the WIN32 environment. To compile I have to undefine the {{{__CYGWIN__}}} macro before including this header.

== How to reproduce
The following program doesn't compile:
{{{
/// gcc -c bug.cpp doesn't compile
#include <cstdlib>
#include <cstring>
#include <iostream>

#include <boost/asio.hpp>

int main(int argc, char* argv[])
{
	return 0;
}
}}}

=== User fix
I fix these issue in my programs by adding the following code BEFORE including <boost/asio.hpp>

{{{
/// 1st issue
#include <boost/asio/detail/pipe_select_interrupter.hpp>

/// 2nd issue
#ifdef __CYGWIN__
#include <termios.h>
#ifdef cfgetospeed
#define __cfgetospeed__impl(tp) cfgetospeed(tp)
#undef cfgetospeed
inline speed_t cfgetospeed(const struct termios *tp)
{
	return __cfgetospeed__impl(tp);
}
#undef __cfgetospeed__impl
#endif /// cfgetospeed is a macro

/// 3rd issue
#undef __CYGWIN__ 
#include <boost/asio/detail/buffer_sequence_adapter.hpp>
#define __CYGWIN__
#endif
}}}"	Bugs	new	To Be Determined	asio	Boost 1.43.0	Problem		boost::asio pipe_select_interrupter