reduce the #proc used in make.
reduce the #proc used in make.
huanzhang12/LightGBM,Allardvm/LightGBM,wxchan/LightGBM,henry0312/LightGBM,wxchan/LightGBM,huanzhang12/LightGBM,wxchan/LightGBM,huanzhang12/LightGBM,henry0312/LightGBM,microsoft/LightGBM,huanzhang12/LightGBM,henry0312/LightGBM,huanzhang12/LightGBM,Allardvm/LightGBM,olofer/LightGBM,microsoft/LightGBM,wxchan/LightGBM,olofer/LightGBM,Laurae2/LightGBM,microsoft/LightGBM,henry0312/LightGBM,henry0312/LightGBM,Allardvm/LightGBM,microsoft/LightGBM,Allardvm/LightGBM,olofer/LightGBM,olofer/LightGBM,Laurae2/LightGBM,olofer/LightGBM,wxchan/LightGBM,microsoft/LightGBM,Laurae2/LightGBM,Laurae2/LightGBM,Allardvm/LightGBM,Laurae2/LightGBM