Add files for PyPI packaging

* Compiles library
* Generates pip installable package
* Allows to directly `import openfhe`instead of 'from openfhe import *`

.gitignore

@@ -10,4 +10,7 @@ build/
 *.pyc
 .settings/
 docs/
-demoData/
+demoData/
+dist/
+openfhe/openfhe.so
+openfhe.egg-info/

docs/requirements.txt

@@ -17,6 +17,7 @@ Pygments==2.11.2
 pyparsing==3.0.7
 pytz==2021.3
 requests==2.27.1
+setuptools==69.0.3
 snowballstemmer==2.2.0
 Sphinx==4.4.0
 sphinx-rtd-theme==1.0.0

openfhe/__init__.py

@@ -0,0 +1 @@
+from .openfhe import *

setup.py

@@ -0,0 +1,78 @@
+import os
+import subprocess
+import sys
+from setuptools import setup, Extension
+from setuptools.command.sdist import sdist as _sdist
+from setuptools.command.build_ext import build_ext as _build_ext
+from wheel.bdist_wheel import bdist_wheel as _bdist_wheel
+import glob
+import shutil
+
+__version__ = '0.8.4'
+
+class CMakeExtension(Extension):
+    def __init__(self, name, sourcedir=''):
+        super().__init__(name, sources=[])
+        self.sourcedir = os.path.abspath(sourcedir)
+
+class CMakeBuild(_build_ext):
+
+    def run(self):
+        for ext in self.extensions:
+            self.build_cmake(ext)
+
+    def build_cmake(self, ext):
+        if os.path.exists('openfhe/openfhe.so'):
+            return
+        extdir = os.path.abspath(os.path.dirname(self.get_ext_fullpath(ext.name)))
+        print(extdir)
+        cmake_args = ['-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=' + extdir,
+                      '-DPYTHON_EXECUTABLE=' + sys.executable]
+
+        cfg = 'Debug' if self.debug else 'Release'
+        build_args = ['--config', cfg]
+
+        build_temp = os.path.abspath(self.build_temp)
+        os.makedirs(build_temp, exist_ok=True)
+
+        num_cores = os.cpu_count() or 1
+        build_args += ['--parallel', str(num_cores)]
+
+        subprocess.check_call(['cmake', ext.sourcedir] + cmake_args, cwd=build_temp)
+        subprocess.check_call(['cmake', '--build', '.', '--target', ext.name] + build_args, cwd=build_temp)
+
+        so_files = glob.glob(os.path.join(extdir, '*.so'))
+        if not so_files:
+            raise RuntimeError("Cannot find any built .so file in " + extdir)
+
+        src_file = so_files[0] 
+        dst_file = os.path.join('openfhe', 'openfhe.so')
+        shutil.move(src_file, dst_file)
+
+# Run build_ext before sdist
+class SDist(_sdist):
+    def run(self):
+        if os.path.exists('openfhe/openfhe.so'):
+            os.remove('openfhe/openfhe.so')
+        self.run_command('build_ext')
+        super().run()
+
+setup(
+    name='openfhe',
+    version=__version__,
+    description='Python wrapper for OpenFHE C++ library.',
+    author='OpenFHE Team',
+    author_email='contact@openfhe.org',
+    url='https://github.com/openfheorg/openfhe-python',
+    license='BSD-2-Clause',
+    packages=['openfhe'],
+    package_data={'openfhe': ['*.so']},
+    ext_modules=[CMakeExtension('openfhe', sourcedir='')],
+    cmdclass={
+        'build_ext': CMakeBuild,
+        'sdist': SDist
+    },
+    zip_safe=False,
+    include_package_data=True,
+    python_requires=">=3.6",
+)