build: remove HAVE_PTHREAD_SIGNAL define it was forced on

cmake/Libraries.cmake

@@ -158,7 +158,6 @@ macro(configure_unix_libs)
 
   # For config.h, set some static values; it may be a good idea to make these
   # values dynamic for non-standard UNIX compilers.
-  set(HAVE_PTHREAD_SIGNAL 1)
   set(HAVE_SOCKLEN_T 1)
 
   # Unix only: For config.h, save the results based on a template (config.h.in).

src/lib/Config.h.in

@@ -16,9 +16,6 @@
 /* Define if you have POSIX threads libraries and header files. */
 #cmakedefine HAVE_PTHREAD @HAVE_PTHREAD@
 
-/* Define if you have `pthread_sigmask` and `pthread_kill` functions. */
-#cmakedefine HAVE_PTHREAD_SIGNAL @HAVE_PTHREAD_SIGNAL@
-
 /* Define if your compiler defines socklen_t. */
 #cmakedefine HAVE_SOCKLEN_T @HAVE_SOCKLEN_T@
 

src/lib/arch/unix/ArchMultithreadPosix.cpp

@@ -17,17 +17,6 @@
 
 #define SIGWAKEUP SIGUSR1
 
-#if !HAVE_PTHREAD_SIGNAL
-// boy, is this platform broken.  forget about pthread signal
-// handling and let signals through to every process.  deskflow
-// will not terminate cleanly when it gets SIGTERM or SIGINT.
-#define pthread_sigmask sigprocmask
-#define pthread_kill(tid_, sig_) kill(0, (sig_))
-#define sigwait(set_, sig_)
-#undef HAVE_POSIX_SIGWAIT
-#define HAVE_POSIX_SIGWAIT 1
-#endif
-
 static void setSignalSet(sigset_t *sigset)
 {
   sigemptyset(sigset);
@@ -300,9 +289,7 @@ ArchThread ArchMultithreadPosix::newThread(ThreadFunc func, void *data)
   // can't tell the difference.
   if (!m_newThreadCalled) {
     m_newThreadCalled = true;
-#if HAVE_PTHREAD_SIGNAL
     startSignalHandler();
-#endif
   }
 
   lockMutex(m_threadMutex);