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https://github.com/fortran-lang/fpm

Fortran Package Manager (fpm)
https://github.com/fortran-lang/fpm

build-system fortran fortran-package-manager fpm package-manager

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Fortran Package Manager (fpm)

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# [Fortran Package Manager](https://fpm.fortran-lang.org/)



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](https://doc.rust-lang.org/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](https://github.com/fortran-lang/fpm-registry) 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](https://github.com/fortran-lang/fpm/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](CONTRIBUTING.md). You can also discuss your ideas and

queries with the community in

[fpm discussions](https://github.com/fortran-lang/fpm/discussions),

or more broadly on [Fortran-Lang Discourse](https://fortran-lang.discourse.group/).



Fortran Package Manager is not to be confused with

[Jordan Sissel's fpm](https://github.com/jordansissel/fpm), a more general,

non-Fortran related package manager.



**Website: **



## [Download](https://fpm.fortran-lang.org/install/index.html)



Fpm is available on many platforms and through multiple package managers, see our Documentation

webpage for a list of **[All Supported Installations](https://fpm.fortran-lang.org/install/index.html)**.



The easiest installation routes are shown below.



### [Binary](https://github.com/fortran-lang/fpm/releases)



Binaries for the latest stable release are available [to download](https://github.com/fortran-lang/fpm/releases/latest) 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-0.6.0-linux-x86_64`



The binaries at the [current tag](https://github.com/fortran-lang/fpm/releases/tag/current) 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:



```sh

conda config --add channels conda-forge

```



Fpm can be installed with:



```sh

conda create -n fpm fpm

conda activate fpm

```



The conda package manager can be installed from [miniforge](https://github.com/conda-forge/miniforge/releases)

or from [miniconda](https://docs.conda.io/en/latest/miniconda.html).



[Conda]: https://conda.io

[conda-forge]: https://conda-forge.org/



### [Homebrew](https://brew.sh/)



The Fortran Package Manager (fpm) is available for the [Homebrew](https://brew.sh/) package manager via an additional tap.

To install fpm via brew, include the new tap and install using



```sh

brew tap fortran-lang/fortran

brew install fpm

```



Binary distributions are available for MacOS 11 (Catalina) and 12 (Big Sur) for x86_64 architectures. For other platforms fpm will be built locally from source automatically.



Fpm should be available and functional after those steps.

For more details checkout the tap [here](https://github.com/fortran-lang/homebrew-fortran).



## [Get started](https://fpm.fortran-lang.org/tutorial/index.html)



**Follow our [Quickstart Tutorial](https://fpm.fortran-lang.org/tutorial/hello-fpm.html) to get familiar with fpm**.



### Start 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](PACKAGING.md) or

the [manifest reference](https://fpm.fortran-lang.org/spec/manifest.html).



## Environmental variables



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_CXX`            | C++ compiler path     | `--cxx-compiler` |

| `FPM_FFLAGS`         | Fortran compiler flags| `--flag`         |

| `FPM_CFLAGS`         | C compiler flags      | `--c-flag`       |

| `FPM_CXXFLAGS`       | C++ compiler flags    | `--cxx-flag`     |

| `FPM_AR`             | Archiver path         | `--archiver`     |

| `FPM_LDFLAGS`        | Link flags            | `--link-flag`    |