Windows support

Signed-off-by: Conor MacBride <conor@macbride.me>

.travis.yml

@@ -8,14 +8,21 @@ jobs:
       os: osx
       osx_image: xcode11.2
       language: shell
+    - name: "Python 3.8.0 on Windows"
+      os: windows
+      language: shell
+      before_install:
+        - choco install python --version 3.8.0
+        - python -m pip install --upgrade pip
+      env: PATH=/c/Python38:/c/Python38/Scripts:$PATH
 install:
   - pip3 install --upgrade pip
   - pip3 install -e .
 script: python3 -m pytest --cov=mcalf || python -m pytest --cov=mcalf
 after_script: cd ~
 deploy:
   provider: pypi
-  user: "__token__"
+  username: "__token__"
   password:
     secure: "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"
   skip_existing: true

cextern/voigt.c

@@ -1,5 +1,5 @@
 #include <math.h>
 
-double func(int n, double args[n]) {
+double func(int n, double args[]) {
     return exp( - pow(args[0], 2.0) / (2.0 * pow(args[2], 2.0))) / (pow(args[3], 2.0) + pow(args[1] - args[0], 2.0));
 }

setup.py

@@ -2,6 +2,36 @@
 
 import os.path
 from setuptools import setup, find_packages, Extension
+from distutils.command.build_ext import build_ext
+
+
+class build_ext(build_ext):
+
+    def build_extension(self, ext):
+        self._ctypes = isinstance(ext, CTypes)
+        return super().build_extension(ext)
+
+    def get_export_symbols(self, ext):
+        if self._ctypes:
+            return ext.export_symbols
+        return super().get_export_symbols(ext)
+
+    def get_ext_filename(self, ext_name):
+        if self._ctypes:
+            # Ensure that the extension ends in ".so"
+            # Modified version of parent method
+            from distutils.sysconfig import get_config_var
+            ext_suffix = get_config_var('EXT_SUFFIX')
+            expanded_suffix = ext_suffix.split('.')
+            expanded_suffix[-1] = "so"
+            ext_suffix = ".".join(expanded_suffix)
+            ext_path = ext_name.split('.')
+            return os.path.join(*ext_path) + ext_suffix
+        return super().get_ext_filename(ext_name)
+
+
+class CTypes(Extension):
+    pass
 
 
 def read(file_name):
@@ -19,11 +49,12 @@ def read(file_name):
                       "pyyaml>=5.1", "pathos>=0.2.5", "scikit-learn>=0.21",
                       "matplotlib>=3.1", "astropy>=3.2", "pytest", "pytest-cov"],
 
-    ext_modules=[Extension("mcalf.profiles.ext_voigtlib", ["cextern/voigt.c"])],
+    ext_modules=[CTypes("mcalf.profiles.ext_voigtlib", ["cextern/voigt.c"])],
+    cmdclass={'build_ext': build_ext},
 
     author="Conor MacBride",
     author_email="cmacbride01@qub.ac.uk",
-    licence="BSD 2-Clause",
+    license="BSD 2-Clause",
     description="MCALF: Multi-Component Atmospheric Line Fitting",
     keywords="spectrum spectra fitting absorption emission voigt",
     url="https://github.com/ConorMacBride/mcalf/",