Issue #7272, continued: don't re-use existing HAVE_BROKEN_POSIX_SEMAPHORES

to indicate that semaphores aren't available;  define a new variable
POSIX_SEMAPHORES_NOT_ENABLED instead.

Modules/_multiprocessing/multiprocessing.c

@@ -251,7 +251,7 @@ init_multiprocessing(void)
 	PyModule_AddObject(module, "Connection", (PyObject*)&ConnectionType);
 
 #if defined(MS_WINDOWS) ||						\
-  (defined(HAVE_SEM_OPEN) && !defined(HAVE_BROKEN_POSIX_SEMAPHORES))
+  (defined(HAVE_SEM_OPEN) && !defined(POSIX_SEMAPHORES_NOT_ENABLED))
 	/* Add SemLock type to module */
 	if (PyType_Ready(&SemLockType) < 0)
 		return;
@@ -298,7 +298,7 @@ init_multiprocessing(void)
 		Py_DECREF(temp); Py_DECREF(value); return; }	  \
 	Py_DECREF(value)
 	
-#if defined(HAVE_SEM_OPEN) && !defined(HAVE_BROKEN_POSIX_SEMAPHORES)
+#if defined(HAVE_SEM_OPEN) && !defined(POSIX_SEMAPHORES_NOT_ENABLED)
 	ADD_FLAG(HAVE_SEM_OPEN);
 #endif
 #ifdef HAVE_SEM_TIMEDWAIT

Modules/_multiprocessing/multiprocessing.h

@@ -27,7 +27,7 @@
 #  include <sys/socket.h>
 #  include <sys/uio.h>
 #  include <arpa/inet.h>             /* htonl() and ntohl() */
-#  if defined(HAVE_SEM_OPEN) && !defined(HAVE_BROKEN_POSIX_SEMAPHORES)
+#  if defined(HAVE_SEM_OPEN) && !defined(POSIX_SEMAPHORES_NOT_ENABLED)
 #    include <semaphore.h>
      typedef sem_t *SEM_HANDLE;
 #  endif

configure

@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 76432 .
+# From configure.in Revision: 76550 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61 for python 2.7.
 #
@@ -23876,7 +23876,7 @@ if test $ac_cv_posix_semaphores_enabled = no
 then
 
 cat >>confdefs.h <<\_ACEOF
-#define HAVE_BROKEN_POSIX_SEMAPHORES 1
+#define POSIX_SEMAPHORES_NOT_ENABLED 1
 _ACEOF
 
 fi

configure.in

@@ -3419,8 +3419,8 @@ int main(void) {
 AC_MSG_RESULT($ac_cv_posix_semaphores_enabled)
 if test $ac_cv_posix_semaphores_enabled = no
 then
-  AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1,
-            [Define if the Posix semaphores do not work on your system])
+  AC_DEFINE(POSIX_SEMAPHORES_NOT_ENABLED, 1,
+            [Define if POSIX semaphores aren't enabled on your system])
 fi
 
 

pyconfig.h.in

@@ -909,6 +909,9 @@
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
+/* Define if POSIX semaphores aren't enabled on your system */
+#undef POSIX_SEMAPHORES_NOT_ENABLED
+
 /* Defined if PTHREAD_SCOPE_SYSTEM supported. */
 #undef PTHREAD_SYSTEM_SCHED_SUPPORTED
 

setup.py

@@ -1316,7 +1316,7 @@ class PyBuildExt(build_ext):
                                      '_multiprocessing/socket_connection.c'
                                    ]
             if (sysconfig.get_config_var('HAVE_SEM_OPEN') and not
-                sysconfig.get_config_var('HAVE_BROKEN_POSIX_SEMAPHORES')):
+                sysconfig.get_config_var('POSIX_SEMAPHORES_NOT_ENABLED')):
                 multiprocessing_srcs.append('_multiprocessing/semaphore.c')
 
         if sysconfig.get_config_var('WITH_THREAD'):