python setup.py install error

[cankeyyin]

以下是LightGBM_compilation.log的内容：

CMake Deprecation Warning at CMakeLists.txt:4 (cmake_minimum_required):
Compatibility with CMake < 2.8.12 will be removed from a future version of
CMake.

Update the VERSION argument value or use a ... suffix to tell
CMake that the project does not need compatibility with older versions.

-- The C compiler identification is MSVC 19.29.30141.0
-- The CXX compiler identification is MSVC 19.29.30141.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Professional/VC/Tools/MSVC/14.29.30133/bin/Hostx64/x64/cl.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Professional/VC/Tools/MSVC/14.29.30133/bin/Hostx64/x64/cl.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenMP_C: -openmp (found version "2.0")
-- Found OpenMP_CXX: -openmp (found version "2.0")
-- Found OpenMP: TRUE (found version "2.0")
-- Configuring done
-- Generating done
-- Build files have been written to: L:/mtgbmcode-main/python-package/build_cpp
用于 .NET Framework 的 Microsoft (R) 生成引擎版本 16.11.2+f32259642
版权所有(C) Microsoft Corporation。保留所有权利。

Building Custom Rule L:/mtgbmcode-main/python-package/compile/CMakeLists.txt
c_api.cpp
lightgbm_R.cpp
application.cpp
boosting.cpp
gbdt.cpp
gbdt_model_text.cpp
gbdt_prediction.cpp
prediction_early_stop.cpp
bin.cpp
config.cpp
config_auto.cpp
dataset.cpp
dataset_loader.cpp
file_io.cpp
json11.cpp
metadata.cpp
parser.cpp
tree.cpp
dcg_calculator.cpp
metric.cpp
linker_topo.cpp
linkers_mpi.cpp
linkers_socket.cpp
network.cpp
L:\mtgbmcode-main\python-package\compile\src\boosting\boosting.cpp(70,115): warning C4100: “hessians2”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\boosting\boosting.cpp(70,88): warning C4100: “gradients2”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\io\dataset.cpp(594,39): warning C4267: “=”: 从“size_t”转换到“LightGBM::data_size_t”，可能丢失数据 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\boosting\boosting.cpp(70,64): warning C4100: “hessians”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\io\dataset.cpp(601,41): warning C4267: “=”: 从“size_t”转换到“LightGBM::data_size_t”，可能丢失数据 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\boosting\boosting.cpp(70,38): warning C4100: “gradients”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\boosting\boosting.cpp(76,54): warning C4100: “filename”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\boosting\boosting.cpp(76,31): warning C4100: “num_label”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\boosting\boosting.cpp(75,31): warning C4100: “num_labels”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\boosting\boosting.cpp(74,47): warning C4100: “num_iterations”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\boosting\boosting.cpp(74,26): warning C4100: “start_iteration”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\boosting\boosting.cpp(80,23): warning C4100: “num_labels”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
objective_function.cpp
data_parallel_tree_learner.cpp
feature_parallel_tree_learner.cpp
gpu_tree_learner.cpp
serial_tree_learner.cpp
serial_tree_learner2.cpp
tree_learner.cpp
voting_parallel_tree_learner.cpp
L:\mtgbmcode-main\python-package\compile\src\treelearner\serial_tree_learner2.cpp(252,15): warning C4189: “ii”: 局部变量已初始化但不引用 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\treelearner\tree_learner.cpp(41,86): warning C4100: “hessians”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\treelearner\tree_learner.cpp(41,60): warning C4100: “gradients”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\treelearner\tree_learner.cpp(41,39): warning C4100: “tree”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\treelearner\tree_learner.cpp(46,17): warning C4100: “num_data”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\treelearner\tree_learner.cpp(45,54): warning C4100: “used_indices”: 未引用的形参 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
c_api.obj : 找到 MSIL .netmodule 或使用 /GL 编译的模块；正在使用 /LTCG 重新启动链接；将 /LTCG 添加到链接命令行以改进链接器性能
正在创建库 L:/mtgbmcode-main/python-package/compile/Release/lib_lightgbm.lib 和对象 L:/mtgbmcode-main/python-package/compile/Release/lib_lightgbm.exp
正在生成代码
L:\mtgbmcode-main\python-package\compile\src\boosting\gbdt.cpp(380): error C4716: “LightGBM::GBDT::TrainOneIter”: 必须返回一个值 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
L:\mtgbmcode-main\python-package\compile\src\boosting\dart.hpp(61): warning C4700: 使用了未初始化的局部变量“ret” [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]
LINK : fatal error LNK1257: 代码生成失败 [L:\mtgbmcode-main\python-package\build_cpp_lightgbm.vcxproj]

[lulu313kobe]

hi @cankeyyin met same error, do you have any updates about this? thx!