Added missing run of corresponding 'build' command.

Lib/distutils/command/install_ext.py

@@ -27,6 +27,9 @@ class InstallExt (Command):
 
     def run (self):
 
+        # Make sure we have built all extension modules first
+        self.run_peer ('build_ext')
+
         # Dump the entire "build/platlib" directory (or whatever it really
         # is; "build/platlib" is the default) to the installation target
         # (eg. "/usr/local/lib/python1.5/site-packages").  Note that

Lib/distutils/command/install_lib.py

@@ -46,6 +46,9 @@ class InstallPy (Command):
 
     def run (self):
 
+        # Make sure we have "built" all pure Python modules first
+        self.run_peer ('build_py')
+
         # Dump entire contents of the build directory to the installation
         # directory (that's the beauty of having a build directory!)
         outfiles = self.copy_tree (self.build_dir, self.install_dir)

Lib/distutils/command/install_py.py

@@ -46,6 +46,9 @@ class InstallPy (Command):
 
     def run (self):
 
+        # Make sure we have "built" all pure Python modules first
+        self.run_peer ('build_py')
+
         # Dump entire contents of the build directory to the installation
         # directory (that's the beauty of having a build directory!)
         outfiles = self.copy_tree (self.build_dir, self.install_dir)