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INSTALL.md

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Layout and compilation of the library

The library is divided into packages which group together related files. Each package defines a distribution and compilation unit.

Packages can be compiled using the traditional make utility or the more recent OPAM one (version 2). The released and current dev versions are also available as OPAM packages.

Compilation and installation of released and current dev version with OPAM

If you just installed OPAM version 2 you should proceed as follows:

opam --version # should print 2.x.y
opam init -n --comp=ocaml-base-compiler.4.14.1
eval $(opam config env)

Once your OPAM environment is configured you can install any math-comp package via

opam repo add coq-released https://coq.inria.fr/opam/released
opam pin add -n coq -k version 8.18.0
opam install coq -j3
opam install coq-mathcomp-ssreflect -j3

Replace ssreflect here by the package you want, the dependencies will be installed automatically. We recommend pinning a particular version of Coq (we give 8.18.0 as an example, see CHANGELOG.md for the supported versions). To get the latest development version you need to execute the following:

opam repo add coq-extra-dev https://coq.inria.fr/opam/extra-dev
opam install coq-mathcomp-ssreflect.dev -j3

You can learn more about OPAM by reading its user manual.

Compilation and installation in a dedicated OPAM root

If you want to install the library in a dedicated environment (let's name it MC) which will remain independent from your current OPAM setup you can run the following commands:

opam init --root=$PWD/MC
eval $(opam config env --root=$PWD/MC`)

After that the installations instructions above apply.

Coq and the library are installed in the $PWD/MC directory (called an OPAM root). To discard the OPAM root, simply delete the directory.

Compilation and installation with make

The instructions assume you are in the mathcomp directory and that you have a supported version of Coq (listed in CHANGLOG.md).

If coqc is in your PATH, then you are good to go. Alternatively, you can export the COQBIN variable to tell make where the coqc binary is:

export COQBIN=/home/username/COQ/coq/bin/

To compile the entire library just type make. If you have parallel hardware then make -j 3 is probably a faster option.

The files can be edited using CoqIDE or Proof General, or any other editor that understands the _CoqProject file, with no further configuration from the mathcomp directory.

coqide ssreflect/div.v

Note that you may need to enable _CoqProject processing in your editor (e.g. the default for CoqIDE is to ignore it).

To install the compiled library, just execute make install.

Compilation and installation of a custom version using OPAM

The instructions assume you are in the parent directory (that contains this file INSTALL.md) and that you have OPAM installed and configured with the standard Coq repositories.

First, we recommend pinning a particular version of Coq (e.g. 8.18.0):

opam pin add -n coq -k version 8.18.0

Then for each math-comp package, pin the opam file:

opam pin add -n -k path coq-mathcomp-ssreflect .

This can be achieved in one go as follows:

for P in *.opam; do opam pin add -n -k path ${P%.opam} .; done

Then you can use opam install to compile and install any package. For example:

opam install coq-mathcomp-character -j3