BLD: remove cython c source from git

Instead generate at build time. The generated sources are still part of
the sdist.
tools/cythonize.py is copied from SciPy with small changes to the
configuration.

Author: juliantaylor

Diff for: .gitignore

@@ -132,3 +132,6 @@ numpy/core/src/umath/umath_tests.c
 numpy/distutils/__config__.py
 numpy/linalg/umath_linalg.c
 doc/source/reference/generated
+# cythonized files
+cythonize.dat
+numpy/random/mtrand/mtrand.c

Diff for: .travis.yml

@@ -32,6 +32,8 @@ before_install:
   - pip install nose
   # pip install coverage
   - python -V
+  - pip install --upgrade pip setuptools
+  - pip install --find-links http://wheels.astropy.org/ --find-links http://wheels2.astropy.org/ --use-wheel Cython
   - sudo apt-get install -qq libatlas-dev libatlas-base-dev gfortran
   - popd
 

Diff for: bscript

@@ -61,6 +61,16 @@ def _register_metadata(context):
     context.register_metadata("is_released", _SETUP_PY.ISRELEASED)
     context.register_metadata("full_version", full_version)
 
+def _generate_cython():
+    print("Cythonizing sources")
+    cwd = os.path.abspath(os.path.dirname(__file__))
+    p = subprocess.call([sys.executable,
+                          os.path.join(cwd, 'tools', 'cythonize.py'),
+                          'numpy'],
+                         cwd=cwd)
+    if p != 0:
+        raise RuntimeError("Running cythonize failed!")
+
 @hooks.post_configure
 def post_configure(context):
     conf = context.waf_context
@@ -76,6 +86,8 @@ def post_configure(context):
 
     blas_lapack.check_blas_lapack(context)
 
+    _generate_cython()
+
 @hooks.pre_build
 def pre_build(context):
     _register_metadata(context)