Fix windows build problems; bump version.

Author: jeromekelleher

python/setup.py

@@ -1,10 +1,14 @@
 import sys
 import os.path
 import codecs
+import platform
 from setuptools import setup, Extension
 from setuptools.command.build_ext import build_ext
 
 
+IS_WINDOWS = platform.system() == "Windows"
+
+
 # Obscure magic required to allow numpy be used as a 'setup_requires'.
 # Based on https://stackoverflow.com/questions/19919905
 class local_build_ext(build_ext):
@@ -34,10 +38,19 @@ def finalize_options(self):
     os.path.join(libdir, f) for f in tsk_source_files] + [
     os.path.join(kastore_dir, "kastore.c")]
 
+defines = []
+libraries = []
+if IS_WINDOWS:
+    # Needed for generating UUIDs
+    libraries.append("Advapi32")
+    defines.append(("WIN32", None))
+
 _tskit_module = Extension(
     '_tskit',
     sources=sources,
     extra_compile_args=["-std=c99"],
+    libraries=libraries,
+    define_macros=defines,
     # Enable asserts
     undef_macros=["NDEBUG"],
     include_dirs=[libdir, kastore_dir],

python/tskit/_version.py

@@ -1,2 +1,2 @@
 # Definitive location for the version number.
-tskit_version = "0.1.0a1"
+tskit_version = "0.1.0a2"