Add Python API (#31)

sherpa-onnx/python/csrc/CMakeLists.txt

@@ -0,0 +1,29 @@
+include_directories(${CMAKE_SOURCE_DIR})
+
+pybind11_add_module(_sherpa_onnx
+  features.cc
+  online-transducer-model-config.cc
+  sherpa-onnx.cc
+  online-stream.cc
+  online-recognizer.cc
+)
+
+if(APPLE)
+  execute_process(
+    COMMAND "${PYTHON_EXECUTABLE}" -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())"
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+    OUTPUT_VARIABLE PYTHON_SITE_PACKAGE_DIR
+  )
+  message(STATUS "PYTHON_SITE_PACKAGE_DIR: ${PYTHON_SITE_PACKAGE_DIR}")
+  target_link_libraries(_sherpa_onnx PRIVATE "-Wl,-rpath,${PYTHON_SITE_PACKAGE_DIR}")
+endif()
+
+if(NOT WIN32)
+  target_link_libraries(_sherpa_onnx PRIVATE "-Wl,-rpath,${SHERPA_ONNX_RPATH_ORIGIN}/sherpa_onnx/lib")
+endif()
+
+target_link_libraries(_sherpa_onnx PRIVATE sherpa-onnx-core)
+
+install(TARGETS _sherpa_onnx
+  DESTINATION ../
+)