setup: add pxd in extensions to help a little about compilation when a deps change. Closes #66

However, distutils doesn't support the introspection of pyx files to get deps.
+ add .PHONY in Makefile for all comamnds, now make build can be used even after a fetch
+ regenerate .h only when build_ext is called.

Makefile

@@ -2,6 +2,8 @@ PYTHON = python
 CHECKSCRIPT = kivy/tools/pep8checker/pep8kivy.py
 KIVY_DIR = kivy/
 
+.PHONY: build force mesabuild pdf style stylereport hook test batchtest cover clean distclean 
+
 build:
 	$(PYTHON) setup.py build_ext --inplace
 

setup.py

@@ -5,6 +5,13 @@ from os import walk, environ
 from distutils.core import setup
 from distutils.extension import Extension
 
+try:
+    # check for cython
+    from Cython.Distutils import build_ext
+except ImportError:
+    print '\nCython is missing, its required for compiling kivy !\n\n'
+    raise
+
 # extract version (simulate doc generation, kivy will be not imported)
 environ['KIVY_DOC_INCLUDE'] = '1'
 import kivy
@@ -60,50 +67,45 @@ else:
         print 'Fallback to Desktop opengl headers.'
         c_options['use_opengl_es2'] = False
 
-print 'Generate config.h'
-with open(join(dirname(__file__), 'kivy', 'graphics', 'config.h'), 'w') as fd:
-    fd.write('// Autogenerated file for Kivy C configuration\n')
-    for k, v in c_options.iteritems():
-        fd.write('#define __%s %d\n' % (k.upper(), int(v)))
 
-print 'Generate config.pxi'
-with open(join(dirname(__file__), 'kivy', 'graphics', 'config.pxi'), 'w') as fd:
-    fd.write('# Autogenerated file for Kivy Cython configuration\n')
-    for k, v in c_options.iteritems():
-        fd.write('DEF %s = %d\n' % (k.upper(), int(v)))
+class KivyBuildExt(build_ext):
+
+    def build_extensions(self):
+        print 'Generate config.h'
+        config_h = join(dirname(__file__), 'kivy', 'graphics', 'config.h')
+        with open(config_h, 'w') as fd:
+            fd.write('// Autogenerated file for Kivy C configuration\n')
+            for k, v in c_options.iteritems():
+                fd.write('#define __%s %d\n' % (k.upper(), int(v)))
+
+        print 'Generate config.pxi'
+        config_pxi = join(dirname(__file__), 'kivy', 'graphics', 'config.pxi')
+        with open(config_pxi, 'w') as fd:
+            fd.write('# Autogenerated file for Kivy Cython configuration\n')
+            for k, v in c_options.iteritems():
+                fd.write('DEF %s = %d\n' % (k.upper(), int(v)))
+
+        build_ext.build_extensions(self)
+
+cmdclass['build_ext'] = KivyBuildExt
 
 # extension modules
 ext_modules = []
 
 # list all files to compile
 pyx_files = []
+pxd_files = []
 kivy_libs_dir = realpath(kivy.kivy_libs_dir)
 for root, dirnames, filenames in walk(join(dirname(__file__), 'kivy')):
     # ignore lib directory
     if realpath(root).startswith(kivy_libs_dir):
         continue
+    for filename in fnfilter(filenames, '*.pxd'):
+        pxd_files.append(join(root, filename))
     for filename in fnfilter(filenames, '*.pyx'):
         pyx_files.append(join(root, filename))
 
-# check for cython
-try:
-    have_cython = True
-    from Cython.Distutils import build_ext
-except:
-    have_cython = False
-
-# create .c for every module
-if 'sdist' in argv and have_cython:
-    from Cython.Compiler.Main import compile
-    print 'Generating C files...',
-    compile(pyx_files)
-    print 'Done !'
-
 # add cython core extension modules if cython is available
-if have_cython:
-    cmdclass['build_ext'] = build_ext
-else:
-    pyx_files = ['%s.c' % x[:-4] for x in pyx_files]
 
 if True:
     libraries = []
@@ -150,14 +152,16 @@ if True:
 
     # simple extensions
     for pyx in (x for x in pyx_files if not 'graphics' in x):
+        pxd = [x for x in pxd_files if not 'graphics' in x]
         module_name = get_modulename_from_file(pyx)
-        ext_modules.append(Extension(module_name, [pyx]))
+        ext_modules.append(Extension(module_name, [pyx] + pxd))
 
     # opengl aware modules
     for pyx in (x for x in pyx_files if 'graphics' in x):
+        pxd = [x for x in pxd_files if 'graphics' in x]
         module_name = get_modulename_from_file(pyx)
         ext_modules.append(Extension(
-            module_name, [pyx],
+            module_name, [pyx] + pxd,
             libraries=libraries,
             include_dirs=include_dirs,
             extra_link_args=extra_link_args))