fpm 0.5.0

Fortran package manager

Fortran Package Manager

Fortran Package Manager (fpm) is a package manager and build system for Fortran. Its key goal is to improve the user experience of Fortran programmers. It does so by making it easier to build your Fortran program or library, run the executables, tests, and examples, and distribute it as a dependency to other Fortran projects. Fpm's user interface is modeled after Rust's Cargo, so if you're familiar with that tool, you will feel at home with fpm. Fpm's long term vision is to nurture and grow the ecosystem of modern Fortran applications and libraries.

Fpm is an early prototype and is evolving rapidly. You can use it to build and package your Fortran projects, as well as to use existing fpm packages as dependencies. Fpm's behavior and user interface may change as it evolves, however as fpm matures and we enter production, we will aim to stay backwards compatible. Please follow the issues to contribute and/or stay up to date with the development. Before opening a bug report or a feature suggestion, please read our Contributor Guide. You can also discuss your ideas and queries with the community in fpm discussions, or more broadly on Fortran-Lang Discourse.

Fortran Package Manager is not to be confused with Jordan Sissel's fpm, a more general, non-Fortran related package manager.

Getting started

Setting up fpm

Binary download

Binaries for the latest stable release are available to download for Windows, MacOS, and Linux.

Note: On Linux and MacOS, you will need to enable executable permission before you can use the binary.

e.g. $ chmod u+x fpm-0.5.0-linux-x86_64

The binaries at the current tag are updated automatically to always provide the current git version from the default branch.

Conda

Fpm is available on conda-forge, to add conda-forge to your channels use:

conda config --add channels conda-forge

Fpm can be installed with:

conda create -n fpm fpm
conda activate fpm

The conda package manager can be installed from miniforge or from miniconda.

MSYS2

Fpm is available as MinGW package in the MSYS2 package manager. To install fpm with pacman use

pacman -S mingw-w64-x86_64-fpm

Afterwards fpm will be available for usage. Currently i686, x86_64 and ucrt-x86_64 are supported MinGW architectures for fpm. For more details check the package information here.

Spack

Fpm is available with spack in its develop version. To install fpm from spack use

spack install fpm

You can add +openmp to enable parallelization of the target compilation in fpm. To use fpm in your environment load it with

spack load fpm

For more details check the package information here.

Github Actions

To setup fpm within Github actions for automated testing, you can use the fortran-lang/setup-fpm action.

Bootstrapping on other platforms

For other platforms and architectures have a look at the bootstrapping instructions.

Creating a new project

Creating a new fpm project is as simple as running the command fpm new project_name. This will create a new folder in your current directory with the following contents and initialized as a git repository.

• fpm.toml – with your project’s name and some default standard meta-data
• README.md – with your project’s name
• .gitignore
• src/project_name.f90 – with a simple hello world subroutine
• app/main.f90 (if --app flag used) – a program that calls the subroutine
• test/main.f90 (if --test flag used) – an empty test program

Building your Fortran project with fpm

fpm understands the basic commands:

• fpm build – build your library, executables and tests
• fpm run – run executables
• fpm test – run tests
• fpm install - installs the executables locally

The command fpm run can optionally accept the name of the specific executable to run, as can fpm test; like fpm run specific_executable. Command line arguments can also be passed to the executable(s) or test(s) with the option -- some arguments.

See additional instructions in the Packaging guide or the manifest reference.

Bootstrapping instructions

This guide explains the process of building fpm on a platform for the first time. To build fpm without a prior fpm version a single source file version is available at each release.

To build manually using the single source distribution, run the following code (from within the current directory)

mkdir _tmp
curl -LJ https://github.com/fortran-lang/fpm/releases/download/current/fpm.F90 > _tmp/fpm.F90
gfortran -J _tmp _tmp/fpm.F90 -o _tmp/fpm
_tmp/fpm install --flag "-g -fbacktrace -O3"
rm -r _tmp

To automatically bootstrap using this appoach run the install script

./install.sh

The table below lists the environment variables that control fpm's choice of compilers, compiler flags, archiver locations, and link flags, each of which can be overridden by passing fpm flags also shown in the table.

Environment Variable	Defines	Overridden by
FPM_FC	Fortran compiler path	--compiler
FPM_CC	C compiler path	--c-compiler
FPM_FFLAGS	Fortran compiler flags	--flag
FPM_CFLAGS	C compiler flags	--c-flag
FPM_AR	Archiver path	--archiver
FPM_LDFLAGS	Link flags	--link-flag