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Fw: guile or scheme used to implement make or meson

From: Mike Gran
Subject: Fw: guile or scheme used to implement make or meson
Date: Tue, 12 Sep 2023 12:39:04 +0000 (UTC)

(forwarding to guile-user because I forgot to reply-all)

> Is using Guile, or a similar Scheme implementation, to re-implement
> make or meson realistic?


I did actually try to do a make in Guile once.  As it turns out, _make_
as a language is rather harder than it looks, especially if you start
trying to add in GNU extensions or BSD extensions to POSIX make.
The language is a bit of a muddle: parsing any token depends on
neighboring tokens in a non-trivial way.  Reimplementing GNU make
might require transliterating a C make into scheme, rather than starting with
a formal grammar and filling in from there.

However, it should be possible to do a strict POSIX make relatively easily.
POSIX make largely relies on the shell for its expressive power. Starting from a
strict POSIX make and expanding upwards from there is a reasonable

for what POSIX make does and does not do.

While I never finished writing a make, I did make a build tool in Guile
inspired by make.  But it is mostly a toy, and not actively maintained.

Mike Gran

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