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_prereq: Represents system packages required for installing SageMath from source

Description

This dummy package represents the minimal requirements (system packages) for installing SageMath from source.

In addition to standard POSIX <POSIX> utilities and the bash <Bash_(Unix_shell)> shell, the following standard command-line development tools must be installed on your computer:

  • make: GNU make, version 3.80 or later. Version 3.82 or later is recommended.
  • m4: GNU m4 1.4.2 or later (non-GNU or older versions might also work).
  • perl: version 5.8.0 or later.
  • ar and ranlib: can be obtained as part of GNU binutils.
  • tar: GNU tar version 1.17 or later, or BSD tar (as provided on macOS).
  • python: Python 3.4 or later, or Python 2.7. (This range of versions is a minimal requirement for internal purposes of the SageMath build system, which is referred to as sage-bootstrap-python.)

Other versions of these may work, but they are untested.

On macOS, suitable versions of all of these tools are provided by the Xcode Command Line Tools. To install them, open a terminal window and run xcode-select --install; then click "Install" in the pop-up window. If the Xcode Command Line Tools are already installed, you may want to check if they need to be updated by typing softwareupdate -l.

On Linux, ar and ranlib are in the binutils package. The other programs are usually located in packages with their respective names.

On Redhat-derived systems not all perl components are installed by default and you might have to install the perl-ExtUtils-MakeMaker package.

To check if you have the above prerequisites installed, for example perl, type:

$ command -v perl

or:

$ which perl

on the command line. If it gives an error (or returns nothing), then either perl is not installed, or it is installed but not in your PATH <PATH_%28variable%29>.