Patch by Bill Noon: added 'dylib' as a library type along with

'static' and 'shared'. This fixes extension building for dynamic
Pythons on MacOSX.

Lib/distutils/ccompiler.py

@@ -792,8 +792,8 @@ class CCompiler:
                           output_dir=''):
 
         if output_dir is None: output_dir = ''
-        if lib_type not in ("static","shared"):
-            raise ValueError, "'lib_type' must be \"static\" or \"shared\""
+        if lib_type not in ("static","shared","dylib"):
+            raise ValueError, "'lib_type' must be \"static\", \"shared\" or \"dylib\""
         fmt = getattr (self, lib_type + "_lib_format")
         ext = getattr (self, lib_type + "_lib_extension")
 

Lib/distutils/unixccompiler.py

@@ -71,7 +71,8 @@ class UnixCCompiler (CCompiler):
     obj_extension = ".o"
     static_lib_extension = ".a"
     shared_lib_extension = ".so"
-    static_lib_format = shared_lib_format = "lib%s%s"
+    dylib_lib_extension = ".dylib"
+    static_lib_format = shared_lib_format = dylib_lib_format = "lib%s%s"
 
 
 
@@ -259,6 +260,8 @@ class UnixCCompiler (CCompiler):
         for dir in dirs:
             shared = os.path.join(
                 dir, self.library_filename(lib, lib_type='shared'))
+            dylib = os.path.join(
+                dir, self.library_filename(lib, lib_type='dylib'))
             static = os.path.join(
                 dir, self.library_filename(lib, lib_type='static'))
 
@@ -266,7 +269,9 @@ class UnixCCompiler (CCompiler):
             # data to go on: GCC seems to prefer the shared library, so I'm
             # assuming that *all* Unix C compilers do.  And of course I'm
             # ignoring even GCC's "-static" option.  So sue me.
-            if os.path.exists(shared):
+            if os.path.exists(dylib):
+                return dylib
+            elif os.path.exists(shared):
                 return shared
             elif os.path.exists(static):
                 return static