Merged revisions 70908,70939,71009,71022,71036 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r70908 | jesse.noller | 2009-03-31 17:20:35 -0500 (Tue, 31 Mar 2009) | 1 line

  Issue 5619: Pass MS CRT debug flags into subprocesses
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  r70939 | jesse.noller | 2009-03-31 22:45:50 -0500 (Tue, 31 Mar 2009) | 1 line

  Fix multiprocessing.event to match the new threading.Event API
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  r71009 | jesse.noller | 2009-04-01 19:03:28 -0500 (Wed, 01 Apr 2009) | 1 line

  issue5545: Switch to Autoconf for multiprocessing; special thanks to Martin Lowis for help
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  r71022 | jesse.noller | 2009-04-01 21:32:55 -0500 (Wed, 01 Apr 2009) | 1 line

  Issue 3110: Additional protection for SEM_VALUE_MAX on platforms, thanks to Martin Loewis
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  r71036 | jesse.noller | 2009-04-01 23:22:09 -0500 (Wed, 01 Apr 2009) | 1 line

  Issue 3551: Raise ValueError if the size causes ERROR_NO_SYSTEM_RESOURCES
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diff --git a/Modules/_multiprocessing/multiprocessing.h b/Modules/_multiprocessing/multiprocessing.h
index 4f4f9d7..f8750d2 100644
--- a/Modules/_multiprocessing/multiprocessing.h
+++ b/Modules/_multiprocessing/multiprocessing.h
@@ -27,7 +27,7 @@
 #  include <sys/socket.h>
 #  include <sys/uio.h>
 #  include <arpa/inet.h>             /* htonl() and ntohl() */
-#  if HAVE_SEM_OPEN
+#  ifdef HAVE_SEM_OPEN
 #    include <semaphore.h>
      typedef sem_t *SEM_HANDLE;
 #  endif
@@ -45,13 +45,18 @@
  * Issue 3110 - Solaris does not define SEM_VALUE_MAX
  */
 #ifndef SEM_VALUE_MAX
-#  ifdef _SEM_VALUE_MAX
-#    define SEM_VALUE_MAX _SEM_VALUE_MAX
-#  else
-#    define SEM_VALUE_MAX INT_MAX
-#  endif
+	#if defined(HAVE_SYSCONF) && defined(_SC_SEM_VALUE_MAX)
+		# define SEM_VALUE_MAX sysconf(_SC_SEM_VALUE_MAX)
+	#elif defined(_SEM_VALUE_MAX)
+		# define SEM_VALUE_MAX _SEM_VALUE_MAX
+	#elif definef(_POSIX_SEM_VALUE_MAX)
+		# define SEM_VALUE_MAX _POSIX_SEM_VALUE_MAX
+	#else
+		# define SEM_VALUE_MAX INT_MAX
+	#endif
 #endif
 
+
 /*
  * Make sure Py_ssize_t available
  */