build pip wheel

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.12)
 
-project(s2-geometry)
+project(s2geometry VERSION 0.9.0)
 
 include(CMakeDependentOption)
 include(CheckCXXCompilerFlag)
@@ -410,7 +410,7 @@ install(FILES src/s2/util/units/length-units.h
         DESTINATION include/s2/util/units)
 install(TARGETS s2 s2testing DESTINATION lib)
 
-message("GTEST_ROOT: ${GTEST_ROOT}")
+message(" * GTEST_ROOT: ${GTEST_ROOT}")
 if (GTEST_ROOT)
   add_subdirectory(${GTEST_ROOT} build_gtest)
   include_directories(${GTEST_ROOT}/include)

src/python/CMakeLists.txt

@@ -16,11 +16,31 @@ swig_link_libraries(pywraps2 ${Python3_LIBRARIES} s2)
 enable_testing()
 add_test(NAME pywraps2_test COMMAND
          ${Python3_EXECUTABLE}
-	 "${PROJECT_SOURCE_DIR}/src/python/pywraps2_test.py")
+        "${PROJECT_SOURCE_DIR}/src/python/pywraps2_test.py")
 set_property(TEST pywraps2_test PROPERTY ENVIRONMENT
              "PYTHONPATH=$ENV{PYTHONPATH}:${PROJECT_BINARY_DIR}/python")
 
-# Install the wrapper.
-install(TARGETS _pywraps2 DESTINATION ${Python3_SITELIB})
-install(FILES "${PROJECT_BINARY_DIR}/python/pywraps2.py"
-	DESTINATION ${Python3_SITELIB})
+# Package pip wheel
+set(PYWRAPS2_PKG "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}")
+set(PYWRAPS2_DIST "${CMAKE_CURRENT_BINARY_DIR}/dist")
+set(PYWRAPS2_SETUP "${CMAKE_CURRENT_BINARY_DIR}/setup.py")
+
+configure_file("${CMAKE_CURRENT_SOURCE_DIR}/setup.py" ${PYWRAPS2_SETUP})
+add_custom_command(OUTPUT ${PYWRAPS2_PKG}
+                   COMMAND ${CMAKE_COMMAND} -E
+                     make_directory ${PYWRAPS2_PKG}
+                   COMMAND ${CMAKE_COMMAND} -E
+                     copy $<TARGET_FILE:s2> ${PYWRAPS2_PKG}
+                   COMMAND ${CMAKE_COMMAND} -E
+                     copy "$<TARGET_FILE_DIR:_pywraps2>/*pywraps2.*" ${PYWRAPS2_PKG}
+                   COMMAND ${CMAKE_COMMAND} -E
+                     copy "${CMAKE_CURRENT_SOURCE_DIR}/__init__.py" ${PYWRAPS2_PKG}
+                   DEPENDS s2 _pywraps2)
+add_custom_command(OUTPUT ${PYWRAPS2_DIST}
+                   COMMAND ${Python3_EXECUTABLE} ${PYWRAPS2_SETUP} bdist_wheel
+                   DEPENDS ${PYWRAPS2_PKG} ${PYWRAPS2_SETUP})
+add_custom_target(bdist_wheel ALL DEPENDS ${PYWRAPS2_PKG} ${PYWRAPS2_DIST})
+
+# Install the package
+install(CODE "execute_process(COMMAND ${Python3_EXECUTABLE} ${PYWRAPS2_SETUP} install
+                              WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})")

src/python/__init__.py

@@ -0,0 +1 @@
+from .pywraps2 import *

src/python/setup.py

@@ -0,0 +1,15 @@
+from setuptools import setup, Distribution
+
+
+class BinaryDistribution(Distribution):
+    def has_ext_modules(self):
+        return True
+
+
+setup(
+    name="@PROJECT_NAME@",
+    version="@PROJECT_VERSION@",
+    packages=["@PROJECT_NAME@"],
+    package_data={"": ["*.so", "*.dylib", "*.dll"]},
+    distclass=BinaryDistribution
+)