# Building a Fortran compiler in pure Fortran (Mega thread)

**URL:** <https://fortran-lang.discourse.group/t/building-a-fortran-compiler-in-pure-fortran-mega-thread/4785>\
**Category:** Language enhancement\
**Created:** [November 22, 2022, 4:20pm UTC](https://fortran-lang.discourse.group/t/building-a-fortran-compiler-in-pure-fortran-mega-thread/4785 "2022-11-22T16:20:07Z")\
**Posts on this page:** 1\
**Page:** 2

<div class="post-metadata">

**Author:** ![ivanpribec](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/ivanpribec/32/3290_2.png) [@ivanpribec](https://fortran-lang.discourse.group/u/ivanpribec)\
**Post date:** [February 19, 2025, 10:02pm UTC](https://fortran-lang.discourse.group/t/building-a-fortran-compiler-in-pure-fortran-mega-thread/4785/21 "2025-02-19T22:02:37Z")

</div>

Speaking of compilers in Fortran, [Wim Vanderbauwhede](https://www.gla.ac.uk/schools/computing/staff/wimvanderbauwhede/) has built a compiler for a functional programming language called Funktal:

> **[Funktal: a frugal functional programming language • Wim Vanderbauwhede](https://wimvanderbauwhede.codeberg.page/articles/funktal/)**
>
> Funktal is a functional programming language for the 64 kB Uxn virtual machine.

The compiler is about 5000 lines of Fortran 90: [wimvanderbauwhede/funktal: A small compiler implemented in Fortran for a statically typed functional language running on Uxn. - Codeberg.org](https://codeberg.org/wimvanderbauwhede/funktal)

* * *

I happen to have an uncomplete version of uxn in Fortran: [ivan-pi/uxnfort: Uxn virtual machine, written in Fortran, WIP - Codeberg.org](https://codeberg.org/ivan-pi/uxnfort); only very rudimentary IO is available and the virtual machine doesn’t yet pass all the opcode tests.

[Previous page](https://fortran-lang.discourse.group/t/building-a-fortran-compiler-in-pure-fortran-mega-thread/4785.md?page=1)