Installing OR-Tools C++ from Source on Windows

Introduction

This guide explains how to install OR-Tools from source, with support for C++, on Windows. Unless you plan to modify the source code or use a third-party solver with OR-Tools, we recommend the binary installation.

Although these instructions might also work on other Windows variants, we have only tested them on machines meeting the following requirements:

Prerequisites

The following sections describe the prerequisites for installing OR-Tools from source.

Visual Studio

To build and run OR-Tools on Windows, you must have Visual Studio 2019 or later installed on your computer with the C++ toolset for Visual Studio. You can find more details here.

To build OR-Tools programs from the command line you must use a x64 Native Tools Command Prompt (not the Developer Command Prompt). You can find more details here.

Git, which can be downloaded from https://git-scm.com/.

CMake

CMake (>= 3.5), which can be downloaded from https://www.cmake.org/download. When installing CMake, select the option for a command-line accessible cmake.

Download the source code

There are two distinct branches of the OR-Tools source code on GitHub: stable and master. The stable branch has been thoroughly tested and should work flawlessly on all supported platforms. The master branch is where the latest updates and improvements have been applied; it’s more current, but less stable.

Download the stable source code

You can get the stable source code for OR-Tools in either of the following ways:

• Clone the stable branch by entering
• Download the latest release in a compressed file, by clicking the Clone or download button in GitHub.

Warning: The full path to the installation directory (where you extract the files) must not contain any spaces.

Download the master source code

To retrieve the source code from the master branch, enter

Download previous releases

You can get the source code for previous releases in either of the following ways:

• Download a previous release from the GitHub release page.
• Assuming you have already created a local repository (by git clone ), you can check out a specific release using a Git tag. For example, to work with the v8.2 release instead of the master branch, enter the following commands in your local repo:

Build third parties

Before building OR-Tools, you’ll need to build the required third party software.

Open a terminal and navigate to the directory where you extracted the files. Then enter:

Using SCIP

Since v7.8, SCIP is now integrated so you won’t have to install it manually. Warning:While OR-Tools ships with SCIP, please consult the SCIP license to ensure that you are complying with it.

Using Gurobi

Gurobi is now pre-integrated. When needed, at runtime, OR-Tools will search for the Gurobi shared library in the default install path of the Gurobi installers on MAC OS X and Windows, or by using the GUROBI_HOME environment variable.

Using an optional third-party MIP solver

You can also use OR-Tools with any of the following optional third-party MIP solvers whose support is disabled by default:

To configure OR-Tools to use one of these solvers, do the following steps:

1. Install the optional solver following the vendor instruction.
2. Open Makefile.local and add the path to the directory where you have installed the solver. For example, for CPLEX you would add this:

Build the source code

To build the source code, open a terminal and navigate to the directory where you extracted the files. Then enter the following command to compile OR-Tools:

Test the source code

You can check that everything is running correctly by entering:

This runs a selection of examples for OR-Tools. If all the examples run successfully, you are ready to get started with OR-Tools.

Cleaning the build files

If you need to re-install OR-Tools, the command:

will remove all compiled dependencies and Makefile.local . This can be useful for resetting to a clean state.

Then re-enter the commands

Installing OR-Tools on your operating system

You can install OR-Tools for C++ on your operating system by entering

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Install OR-Tools

Google created OR-Tools in C++, but you can also use it with Python, Java, or C# (on the .NET platform).

Install OR-Tools for Python

The fastest way to get OR-Tools is to install the Python binary version. If you already have Python (version 3.6+ on Linux, or 3.6+ on Mac OS or Windows), and the Python package manager PIP, you can install OR-Tools as follows:

After the installation is complete, you are ready to get started with OR-Tools for Python.

To install OR-Tools for another language or from source, see the next section.

Installation instructions for all supported languages

For instructions on installing OR-Tools, as well as the required prerequisites, click one of the links below:

Download OR-Tools

If you’re already familiar with installing OR-Tools and just want to download the latest version, you can get it either from a binary distribution or the source files.

If you need to install an older version, the OR-Tools release page has links to downloads for past releases.

Binary distributions

Below are links to the OR-Tools binary distributions by language and platform.

Python

The easiest way to install OR-Tools for Python is from the command line, as shown above. However, if you prefer, you can install OR-Tools from one of the Python wheel files.

C++, Java or C#

• Linux
  • Ubuntu 20.10
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 LTS
  • Alpine Edge
  • CentOS 8
  • Debian 10
  • Fedora 33
• Mac
  • Mac OS X
• Windows
  • Windows with Visual Studio 2019

FlatZinc

• Linux
  • FlatZinc—Ubuntu 20.10
  • FlatZinc—Ubuntu 20.04 LTS
  • FlatZinc—Ubuntu 18.04 LTS
  • FlatZinc—Alpine Edge
  • FlatZinc—CentOS 8
  • FlatZinc—Debian 10
  • FlatZinc—Fedora 33
• Mac
  • FlatZinc—Mac OS X
• Windows
  • FlatZinc—Windows with Visual Studio 2019

Source files

To get the source files for the latest release of OR-Tools, you can either:

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Install OR-Tools

Google created OR-Tools in C++, but you can also use it with Python, Java, or C# (on the .NET platform).

Install OR-Tools for Python

The fastest way to get OR-Tools is to install the Python binary version. If you already have Python (version 3.6+ on Linux, or 3.6+ on Mac OS or Windows), and the Python package manager PIP, you can install OR-Tools as follows:

After the installation is complete, you are ready to get started with OR-Tools for Python.

To install OR-Tools for another language or from source, see the next section.

Installation instructions for all supported languages

For instructions on installing OR-Tools, as well as the required prerequisites, click one of the links below:

Download OR-Tools

If you’re already familiar with installing OR-Tools and just want to download the latest version, you can get it either from a binary distribution or the source files.

If you need to install an older version, the OR-Tools release page has links to downloads for past releases.

Binary distributions

Below are links to the OR-Tools binary distributions by language and platform.

Python

The easiest way to install OR-Tools for Python is from the command line, as shown above. However, if you prefer, you can install OR-Tools from one of the Python wheel files.

C++, Java or C#

• Linux
  • Ubuntu 20.10
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 LTS
  • Alpine Edge
  • CentOS 8
  • Debian 10
  • Fedora 33
• Mac
  • Mac OS X
• Windows
  • Windows with Visual Studio 2019

FlatZinc

• Linux
  • FlatZinc—Ubuntu 20.10
  • FlatZinc—Ubuntu 20.04 LTS
  • FlatZinc—Ubuntu 18.04 LTS
  • FlatZinc—Alpine Edge
  • FlatZinc—CentOS 8
  • FlatZinc—Debian 10
  • FlatZinc—Fedora 33
• Mac
  • FlatZinc—Mac OS X
• Windows
  • FlatZinc—Windows with Visual Studio 2019

Source files

To get the source files for the latest release of OR-Tools, you can either:

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Google Input Tools for Windows

Softonic review

Type in a language of your choice!

Google Input Tools is an excellent browser extension, allowing you to create virtual keyboard layouts in multiple languages. With support for 90+ languages, this extension helps you converse in a wide range of global dialects online. Additionally, the tool memorizes corrections and stores a customized dictionary to include uncommon words, phrases, and names. Unlike Google Translate, Google Input Tools lets you send messages in different styles and dialects.

Easily customizable and simple to use!

Google Input Tools was first released in limited languages. The increasing popularity and utility of the extension have encouraged developers to add more languages on a regular basis. While the extension works well with Chrome, it’s compatible with a wide range of Google services, Windows, and Android devices. With this extension, you can surf the internet in any language you want.

On Windows and Android devices, the extension works online as well as offline. With a simple and clean interface, it makes your life easier, whether you want to converse with strangers in different languages or send emails to business clients in their local language. Google Input Tools is an excellent choice as a communication tool.

How to set up Google Input Tools?

It’s easy to set up and use the extension. Compared to similar tools like Goot and Dictionary.NET, Google Input Tools setup comes with easy navigation and plenty of features. The time required to set up the extension depends on your preferred keyboard layout and language. In order to type in a specific language, you need to click the ‘extension’ icon in the browser, choose the language, and start typing.

Based on your preferences, Google Input Tools lets you type with a virtual keyboard, select English, Hindi, Marathi, or some other primary language, and even draw in a box that identifies handwriting. This extension is perfect for people interested in using multiple languages while working, surfing, or conversing online.

How to use Google Input Tools?

As mentioned earlier, Google Input Tools is an extension designed for Chrome users. It allows you to type in 90+ languages with an on-screen keyboard layout. As such, you can conveniently browse the internet in any language you want. In order to start using the extension on Chrome, you need to install the Windows version and add languages from the extension’s options.

Once you’ve selected a specific language, a keyboard layout will appear on the screen. With a simple double-click, you can add multiple languages and keyboard schemes. Once you’ve made the additions, the on-screen keyboard can be quickly accessed with a left-click on the Google Input Tools extension.

The on-screen keyboard works similar to your computer’s connected keyboard. In fact, Google Input Tools lets you use the physical keyboard too. However, since each language has different characters, it’s better to use the virtual keyboard specifically designed for each language.

Easy to install and use

Backed by the IT giant, Google Input Tools is one of the easiest-to-use extensions in this category. With a simple interface, the tool creates a new icon in your browser’s interface. On clicking the icon, you can see a drop-down menu, which provides you with access to a wide range of features. It also lets you switch between preferred languages.

In order to type in a text, Google Input Tools download provides you with three different methods. In the first one, you can type in content with a keyboard. When you use this method, you can see an on-screen keyboard, which displays the layout of keys in a specific language. All the icons are clearly displayed, and the familiar interface lets you type a text quickly.

The second method to type a text is similar to the first one. However, it only applies to some languages, since it suggests possible phrases and words. Depending on the length of your word or sentence, the suggestions vary in style and number. Overall, you may end up with a huge list of suggestions. It helps you understand the considerable amount of effort and resources that have gone into building Google Input Tools.

The third method is probably the most popular and preferred. In this method, you can type in using a pencil tool. It allows you to draw a letter or alphabet in the text field. The tool identifies text and starts displaying words on the screen. Unfortunately, Google Input Tools doesn’t allow you to resize the writing window, thereby limiting the usage of long words.

How many languages are supported?

Google Input Tools supports over 90 languages, and the developers keep adding to the database on a regular basis. As such, the extension lets you type in a wide range of languages from around the world. Regardless of your location or device, Google Input Tools can be conveniently used without many issues.

From the ‘Options’ section, you can add or remove languages within a couple of clicks. As mentioned earlier, the program gives you the option to choose from a long list of languages. With so many options, the tool has been quite popular among a fairly large audience.

When you download Google Input Tools, it provides you with an easy and practical way to write in any preferred language. Since it works on a wide range of devices, it’s compatible with various Google Tools & Services, such as Google Drive, Gmail, and YouTube.

An excellent choice for your PC!

Google Input Tools for Windows allows you to type in the language you want. With support for several languages, the extension is used by people in different countries and walks of life. Since the interface is simple, even beginners can start using the tool from the get-go. Moreover, it’s easy to switch between different languages, saving a good amount of your time interacting with people from different cultures.

Compared to Fried Babelfish and QTranslate, and other similar apps, Google Input Tools is a much better choice for translations and conversing in different languages. Google Input Tools Hindi, Google Input Tools Marathi, and several more options are available for use.