Fixed #5132: enable extensions to link on Solaris

Lib/distutils/command/build_ext.py

@@ -231,10 +231,12 @@ class build_ext (Command):
                 # building python standard extensions
                 self.library_dirs.append('.')
 
-        # for extensions under Linux with a shared Python library,
+        # for extensions under Linux or Solaris with a shared Python library,
         # Python's library directory must be appended to library_dirs
-        if (sys.platform.startswith('linux') or sys.platform.startswith('gnu')) \
+        sysconfig.get_config_var('Py_ENABLE_SHARED')
-                and sysconfig.get_config_var('Py_ENABLE_SHARED'):
+        if ((sys.platform.startswith('linux') or sys.platform.startswith('gnu')
+             or sys.platform.startswith('sunos'))
+            and sysconfig.get_config_var('Py_ENABLE_SHARED')):
             if sys.executable.startswith(os.path.join(sys.exec_prefix, "bin")):
                 # building third party extensions
                 self.library_dirs.append(sysconfig.get_config_var('LIBDIR'))

Lib/distutils/tests/test_build_ext.py

@@ -67,6 +67,27 @@ class BuildExtTestCase(unittest.TestCase):
         # XXX on Windows the test leaves a directory with xx module in TEMP
         shutil.rmtree(self.tmp_dir, os.name == 'nt' or sys.platform == 'cygwin')
 
+    def test_solaris_enable_shared(self):
+        dist = Distribution({'name': 'xx'})
+        cmd = build_ext(dist)
+        old = sys.platform
+
+        sys.platform = 'sunos' # fooling finalize_options
+        from distutils.sysconfig import  _config_vars
+        old_var = _config_vars.get('Py_ENABLE_SHARED')
+        _config_vars['Py_ENABLE_SHARED'] = 1
+        try:
+            cmd.ensure_finalized()
+        finally:
+            sys.platform = old
+            if old_var is None:
+                del _config_vars['Py_ENABLE_SHARED']
+            else:
+                _config_vars['Py_ENABLE_SHARED'] = old_var
+
+        # make sur we get some lobrary dirs under solaris
+        self.assert_(len(cmd.library_dirs) > 0)
+
 def test_suite():
     src = _get_source_filename()
     if not os.path.exists(src):

Misc/NEWS

@@ -149,6 +149,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #5132: Fixed trouble building extensions under Solaris with 
+  --enabled-shared activated. Initial patch by Dave Peterson.
+
 - Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
 
 - Issue #2047: shutil.move() could believe that its destination path was