# Building Math.NET Numerics

If you do not want to use the official binaries, or if you like to modify, debug or contribute, you can compile locally either using Visual Studio or manually with the build scripts.

## VisualStudio and other IDEs

We clearly separate dependency management from the IDE and therefore recommend to run restore.cmd or restore.sh once after every git checkout in order to restore the dependencies exactly as defined. Otherwise Visual Studio and other IDEs may fail to compile or provide correct IntelliSense.

Tests can be run with the usual integrated NUnit test runners or ReSharper.

## Command Line Tools

Instead of a compatible IDE you can also build the solutions directly with the .NET Core SDK build tools. You may need to run restore.cmd or restore.sh before, once after every git checkout in order to restore the dependencies.

 1: 2:  restore.cmd (or ./restore.sh) dotnet build MathNet.Numerics.sln 

## FAKE

The fully automated build including unit tests, documentation and api reference, NuGet and Zip packages is using FAKE.

FAKE itself is not included in the repository but it will download and bootstrap itself automatically when build.cmd is run the first time. Note that this step is not required when using Visual Studio or the .NET Core SDK directly.

  1: 2: 3: 4: 5: 6: 7: 8: 9: 10: 11: 12: 13: 14:  ./build.sh # normal build and unit tests, when using bash shell on Windows or Linux. build.cmd # normal build and unit tests, when using Windows CMD shell. ./build.sh build # normal build ./build.sh build strongname # normal build and also build strong-named variant ./build.sh test # normal build, run unit tests ./build.sh test quick # normal build, run unit tests except long running ones ./build.sh clean # cleanup build artifacts ./build.sh docs # generate documentation ./build.sh api # generate api reference ./build.sh all # build, test, docs, api reference 

If the build or tests fail claiming that FSharp.Core was not be found, see fsharp.org or install the Visual F# 3.0 Tools directly.

## Dependencies

We manage NuGet and other dependencies with Paket. You do not normally have to do anything with Paket as it is integrated into our FAKE build tools, unless you want to actively manage the dependencies.

.paket/paket.exe restore will restore the packages to the exact version specified in the paket.lock file, .paket/paket.exe install will install or migrate packages after you have made changes to the paket.dependencies file, .paket/paket.exe outdated will show whether any packages are out of date and .paket/paket.exe update will update all packages within the defined constraints. Have a look at the Paket website for more commands and details.

## Documentation

This website and documentation is automatically generated from of a set of CommonMark structured files in doc/content/ using FSharp.Formatting. The final documentation can be built by calling build.sh docs.

However, for editing and previewing the docs on your local machine it is more convenient to run build.sh DocsWatch in a separate console instead, which monitors the content files and incrementally regenerates the HTML output automatically. DocsWatch will also use local/relative URIs instead of absolute ones, so that the links and styles will work as expected locally. This can also be enabled in a full one-time build with build.sh DocsDev instead of just Docs.

## Creating a Release

While only maintainers can make official releases published on NuGet and referred to from the website, you can use the same tools to make your own releases for your own purposes.

Versioning is controlled by the release notes. Before building a new version, first add a new release header and change notes on top of the RELEASENOTES.md document in the root directory. The fake builds pick this up and propagate it to the assembly info files automatically.

The build can then be launched by calling:

 1:  ./build.sh all 

The build script will print the current version as part of the the header banner, which is also included in the release notes document in the build artifacts. Example:

  1: 2: 3: 4: 5: 6: 7: 8: 9: 10: 11: 12: 13:  // __ __ _ _ _ _ ______ _______ // | \/ | | | | | | \ | | ____|__ __| // | \ / | __ _| |_| |__ | \| | |__ | | // | |\/| |/ _ | __| '_ \ | .  | __| | | // | | | | (_| | |_| | | |_| |\ | |____ | | // |_| |_|\__,_|\__|_| |_(_)_| \_|______| |_| // // Math.NET Numerics - https://numerics.mathdotnet.com // Copyright (c) Math.NET - Open Source MIT/X11 License // // Math.NET Numerics v3.5.0 // Math.NET Numerics MKL Provider v1.7.0 // Math.NET Numerics Data Extensions v3.1.0 

The artifacts are then ready in the out/packages directory.

## Extra Packages

In addition to the core package this repository also include extra packages like the data extensions. Most build targets are available for these packages as well, with the following prefixes:

• Data for the Data Extensions

Example: build.sh DataBuild

## Intel MKL on Windows

Building the Intel MKL native provider for Windows requires additionally:

• Either Intel Parallel Studio 2020 or Intel Math Kernel Library 2020 is installed
• Visual Studio 2019, with the following options
• Desktop development with C++ workload
• Windows 10 SDK (10.0.17763.0)
• MSVC v142 - VS 2019 C++ x64/x86 build tools

The build can then be triggered by calling:

 1: 2: 3:  ./build.sh MklWinBuild // build both 32 and 64 bit variants ./build.sh MklTest // run all tests with the MKL provider enforced ./build.sh MklWinAll // build and run tests 

If you run into an error with mkl_link_tool.exe you may need to patch a targets file, see MKL 2020.1, VS2019 linking bug .

The build puts the binaries to out/MKL/Windows/x64 (and x86), the NuGet package to out/MKL/NuGet and a Zip archive to out/MKL/Zip. You can directly use the provider from there by setting Control.NativeProviderPath to the full path pointing to out/MKL/Windows/; this is also what the unit tests do when you run the MklTest build target.

## Official Release Process (Maintainers only)

• Update RELEASENOTES.md file with relevant changes, attributed by contributor (if external). Set date.

• Update CONTRIBUTORS.md file (via git shortlog -sn)

• Build Release:

 1:  build.sh all strongname 
• Commit and push release notes and (auto-updated) assembly info files with new "Release: v1.2.3" commit
• Publish Release:

 1: 2: 3: 4: 5:  build.sh PublishDocs build.sh PublishApi build.sh PublishTag build.sh PublishArchive build.sh PublishNuGet 
• Consider a tweet via @MathDotNet

• Update Wikipedia release version and date for the Math.NET Numerics and Comparison of numerical analysis software articles.