在mac上安装Xgboost Python库

最近在mac上用到xgboost库，安装时遇到颇多大坑，网上查了很多答案几乎都是win上的问题，没遇到理想的，自己也就摸着石头把几个大坑给填了，总结一下，给后人少走点弯路。

1.错误

倘若直接 pip install xgboost时，会出现Command "python setup.py egg_info" failed with error code 1的错误提示， 还是乖乖使用Github源代码安装吧~

2.正确的打开方式

• 1. cd ~ git clone --recursive https://github.com/dmlc/xgboost 终端输出： Cloning into 'xgboost'... remote: Counting objects: 19864, done. remote: Total 19864 (delta 0), reused 0 (delta 0), pack-reused 19863 Receiving objects: 100% (19864/19864), 6.69 MiB | 76.00 KiB/s, done. Resolving deltas: 100% (11937/11937), done. Submodule 'dmlc-core' (https://github.com/dmlc/dmlc-core) registered for path 'dmlc-core' Submodule 'rabit' (https://github.com/dmlc/rabit) registered for path 'rabit' Cloning into '/Users/henrylee/xgboost/dmlc-core'... Cloning into '/Users/henrylee/xgboost/rabit'... Submodule path 'dmlc-core': checked out 'b5bec5481df86e8e6728d8bd80a61d87ef3b2cd5' Submodule path 'rabit': checked out 'a764d45cfb438cc9f15cf47ce586c02ff2c65d0f'

可看出gitclone下来的时候回自动clone上其引用库，而直接使用Release包则不会

• 2. cd xgboost 注意： 倘若直接使用 cd python-package; sudo python setup.py install 会出现: Traceback (most recent call last): File "setup.py", line 19, in <module> LIB_PATH = [os.path.relpath(libfile, CURRENT_DIR) for libfile in libpath['find_lib_path']()] File "xgboost/libpath.py", line 46, in find_lib_path 'List of candidates:\n' + ('\n'.join(dll_path))) __builtin__.XGBoostLibraryNotFound: Cannot find XGBoost Library in the candidate path, did you install compilers and run build.sh in root path? 的错误提示，意思是你还是先跑跑文件夹下面的build.sh吧 注： 使用Release包会报错/dmlc-core下找不到某文件，这也是不要使用Release包的原因
• 3. 那我就跑吧 cd ~/xgboost bash build.sh 这时会出现一大堆C++编译，若无出现则可能像官网所说使用brew安装下GCC——brew install gcc --without-multilib
• 4. 这个时候就真可以名正而顺地使用 cd python-package; sudo python setup.py install 最后会终端出现： Finished processing dependencies for xgboost==0.6 代表安装成功了。