You need to install git and CMake first.
Note: 32-bit R/Rtools is not supported.
Installing Rtools is mandatory, and only support the 64-bit version. It requires to add to PATH the Rtools MinGW64 folder, if it was not done automatically during installation.
The default compiler is Visual Studio (or VS Build Tools) in Windows, with an automatic fallback to Rtools or any MinGW64 (x86_64-posix-seh) available (this means if you have only Rtools and CMake, it will compile fine).
To force the usage of Rtools / MinGW, you can set
For users who wants to install online with GPU or want to choose a specific compiler, please check the end of this document for installation using a helper package (Laurae2/lgbdl).
Warning for Windows users: it is recommended to use Visual Studio for its better multi-threading efficiency in Windows for many core systems. For very simple systems (dual core computers or worse), MinGW64 is recommended for maximum performance. If you do not know what to choose, it is recommended to use Visual Studio, the default compiler. Do not try using MinGW in Windows on many core systems. It may result in 10x slower results than Visual Studio.
You can perform installation either with Apple Clang or gcc. In case you prefer Apple Clang, you should install OpenMP (details for installation can be found in Installation Guide) first and CMake version 3.12 or higher is required. In case you prefer gcc, you need to install it (details for installation can be found in Installation Guide) and set some environment variables to tell R to use
g++. If you install these from Homebrew, your versions of
gcc are most likely in
/usr/local/bin, as shown below.
# replace 8 with version of gcc installed on your machine export CXX=/usr/local/bin/g++-8 CC=/usr/local/bin/gcc-8
Build and install R-package with the following commands:
build_r.R script builds the package in a temporary directory called
lightgbm_r. It will destroy and recreate that directory each time you run the script.
Note: for the build with Visual Studio/VS Build Tools in Windows, you should use the Windows CMD or Powershell.
Windows users may need to run with administrator rights (either R or the command prompt, depending on the way you are installing this package). Linux users might require the appropriate user write permissions for packages.
R-package/src/install.libs.R to enable the build with GPU support. You will need to install Boost and OpenCL first: details for installation can be found in Installation-Guide.
If you are using a precompiled dll/lib locally, you can move the dll/lib into LightGBM root folder, modify
LightGBM/R-package/src/install.libs.R’s 2nd line (change
use_precompile <- FALSE to
use_precompile <- TRUE), and install R-package as usual. NOTE: If your R version is not smaller than 3.5.0, you should set
DUSE_R35=ON in cmake options when build precompiled dll/lib.
When your package installation is done, you can check quickly if your LightGBM R-package is working by running the following:
You can install LightGBM R-package from GitHub with devtools thanks to a helper package for LightGBM.
You will need:
In addition, if you are using a Visual Studio precompiled DLL, assuming you do not have Visual Studio installed (if you have it installed, ignore the warnings below):
Once you have all this setup, you can use
lgbdl package to install LightGBM from repository.
For instance, you can install the R-package from LightGBM master commit of GitHub with Visual Studio using the following from R:
You may also install using a precompiled dll/lib using the following from R:
You may also install online using a LightGBM with proper GPU support using Visual Studio (as an example here) using the following from R:
For more details about options, please check Laurae2/lgbdl R-package.
You may also read Microsoft/LightGBM#912 for a visual example for LightGBM installation in Windows with Visual Studio.