Fix issue 3110 - solaris compilation of multiprocessing fails, reviewed by pitrou

Misc/NEWS

@@ -83,6 +83,9 @@ Library
 - Issue #3708: os.urandom no longer goes into an infinite loop when passed a
   non-integer floating point number.
 
+- Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing 
+  SEM_VALUE_MAX.
+
 Extension Modules
 -----------------
 

Modules/_multiprocessing/multiprocessing.h

@@ -36,6 +36,17 @@
 #  define INVALID_HANDLE_VALUE (-1)
 #endif
 
+/*
+ * 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
+#endif
+
 /*
  * Make sure Py_ssize_t available
  */