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The GNU compiler front end. g++ supports a large number of programming languages. We use it for C++. There are versions for Linux, Mac and Windows. Here is the g++ main web page.
g++ is often already installed on a Unix system, such as Linux or Mac. If not, or if a more recent version is needed, follow the instructions below for your operating system.
g++ 4.4 or later is required for using the -march=native g++ argument. This compiles to the specific machine architecture where the compile is being performed. This may improve performance. DO NOT use code compiled with -march=native on a different machine.
In a terminal window type g++ --version to determine whether or not g++ is installed,
and if so which version. If not installed or a more recent version is needed, then install the
Ubuntu build-essential package, which includes g++ and a number of other packages often used for program
development, by using the following command:
sudo apt-get updatesudo apt-get -y install build-essential
This installs a number of software development tools in addition to g++.
On the Mac g++ is part of Apple's Xcode software development environment. Installing or upgrading g++ is done by installing or upgrading Xcode. See the Xcode page for more information on installing or upgrading Xcode.
On Windows install the minggw package, which includes g++. On Windows g++ is used for command line builds. Visual Studio can also be used to build model code. It has the advantage of a complete integrated development environment, with a debugger that has very good support for C++.