stackverflow真是个好网站!!!!!!!!!
Mac 系统真的麻烦,在Windows上一个pip install lightgbm就可以了,但在Mac上不行,百度了下,原因是:
LightGBM depends on OpenMP for compiling, which isn't supported by Apple Clang. Please install gcc/g++ by using the following commands
成功
心想用英文搜一下问题,看看老外是怎么解决的,果然找出了stackoverflow上的解决方案,一看就觉得靠谱,试了之后果然成功了,老外真厉害!
Build LightGBM in Mac: brew install cmake brew install gcc --without-multilib git clone --recursive https://github.com/Microsoft/LightGBM ; cd LightGBM mkdir build ; cd build cmake .. make -j cd ../python-packages sudo python setup.py install --precompile #注意后面要加 --precompile ,不加会报错,原因待查 As stated by @ecodan, you might need to force Mac to use GCC and G++ instead of the default compiler. So instead of building with cmake .., try: cmake -DCMAKE_C_COMPILER=/usr/local/Cellar/gcc/6.1.0/bin/gcc-6 -DCMAKE_CXX_COMPILER=/usr/local/Cellar/gcc/6.1.0/bin/g++-6 .. #这句是关键,强行指定编译器,也就解决了软连接的问题 #注意要修改gcc版本为自己的版本
关于make,cmake,可以理解为make需要使用Makefile,而cmake是产生Makefile的工具
失败
百度搜索到的方法基本都是按照github官网来的:
brew install cmake brew install gcc git clone --recursive https://github.com/Microsoft/LightGBM ; cd LightGBM export CXX=g++-7 CC=gcc-7 # replace 7 with version of gcc installed on your machine mkdir build ; cd build cmake .. make -j4
提示 permission denied ,一般是因为权限问题,在命令前加sudo即可
cmake这步出错:Apple clang is not supported
,百度后,原因应该是Mac OS X 系统默认将 GCC软连接到Clang ,然后百度修改软连接的方法:
$sudo vim ~/.bash_profile alias gcc='gcc-4.7' alias cc='gcc-4.7' alias g++='g++-4.7' alias c++='c++-4.7' source ~/.bash_profile
修改配置后然并卵。。。