Fix issues about DLLs when installing pre-compiled wheels on windows (#91)

cmake/cmake_extension.py

@@ -71,10 +71,8 @@ class BuildExtension(build_ext):
             cmake_args = "-DCMAKE_BUILD_TYPE=Release"
 
         extra_cmake_args = f" -DCMAKE_INSTALL_PREFIX={install_dir} "
-        if not is_windows():
-            extra_cmake_args += " -DBUILD_SHARED_LIBS=ON "
-        else:
-            extra_cmake_args += " -DBUILD_SHARED_LIBS=OFF "
+        extra_cmake_args += " -DBUILD_SHARED_LIBS=ON "
+
         extra_cmake_args += " -DSHERPA_ONNX_ENABLE_CHECK=OFF "
         extra_cmake_args += " -DSHERPA_ONNX_ENABLE_PYTHON=ON "
         extra_cmake_args += " -DSHERPA_ONNX_ENABLE_PORTAUDIO=OFF "

cmake/kaldi-native-fbank.cmake

@@ -49,7 +49,11 @@ function(download_kaldi_native_fbank)
     INTERFACE
       ${kaldi_native_fbank_SOURCE_DIR}/
   )
-  install(TARGETS kaldi-native-fbank-core DESTINATION lib)
+  if(SHERPA_ONNX_ENABLE_PYTHON AND WIN32)
+    install(TARGETS kaldi-native-fbank-core DESTINATION ..)
+  else()
+    install(TARGETS kaldi-native-fbank-core DESTINATION lib)
+  endif()
 endfunction()
 
 download_kaldi_native_fbank()

cmake/onnxruntime.cmake

@@ -155,7 +155,11 @@ function(download_onnxruntime)
   endif()
 
   message(STATUS "onnxruntime lib files: ${onnxruntime_lib_files}")
-  install(FILES ${onnxruntime_lib_files} DESTINATION lib)
+  if(SHERPA_ONNX_ENABLE_PYTHON AND WIN32)
+    install(FILES ${onnxruntime_lib_files} DESTINATION ..)
+  else()
+    install(FILES ${onnxruntime_lib_files} DESTINATION lib)
+  endif()
 endfunction()
 
 # First, we try to locate the header and the lib if the use has already