[boost] [Test] Build failures on Mac OS X

From: Doug Gregor (dgregor_at_[hidden])
Date: 2007-10-22 15:51:40

The Test library is failing to build on the Subversion trunk with the  
following error:

darwin.compile.c++ ../../../../bin.v2/libs/test/build/darwin/debug/ 
link-static/execution_monitor.o
../../../../boost/test/impl/execution_monitor.ipp: In member function  
'void boost::detail::system_signal_exception::report() const':
../../../../boost/test/impl/execution_monitor.ipp:426: error:  
'SIGPOLL' was not declared in this scope
../../../../boost/test/impl/execution_monitor.ipp: In constructor  
'boost::detail::signal_action::signal_action(int, bool, bool, char*)':
../../../../boost/test/impl/execution_monitor.ipp:527: error:  
expected id-expression before '(' token
../../../../boost/test/impl/execution_monitor.ipp: In constructor  
'boost::detail::signal_handler::signal_handler(bool, int, bool, char*)':
../../../../boost/test/impl/execution_monitor.ipp:608: error:  
'SIGPOLL' was not declared in this scope

The definition of SIGPOLL in Mac OS X's signal.h is conditional:

#if  defined(_POSIX_C_SOURCE)
#define SIGPOLL 7       /* pollable event ([XSR] generated, not  
supported) */
#else   /* !_POSIX_C_SOURCE */
#define SIGIOT  SIGABRT /* compatibility */
#define SIGEMT  7       /* EMT instruction */
#endif  /* !_POSIX_C_SOURCE */

I'll be happy to test fixes, if that would help, but I'm too confused  
about the handling of SIGPOLL in execution_monitor.ipp to come up  
with my own patch. In one place, the use of SIGPOLL is guarded by ! 
defined(__CYGWIN__), in other places there doesn't seem to be such a  
guard. A little Googling notes that SIGPOLL is also missing on  
Cygwin, so I assume the Test library is broken on that platform, too.

        - Doug