Merge branch 'libffi-3.4.6' into 'master'

Update to libffi 3.4.6

See merge request !3

LICENSE

-libffi - Copyright (c) 1996-2012  Anthony Green, Red Hat, Inc and others.
+libffi - Copyright (c) 1996-2024  Anthony Green, Red Hat, Inc and others.
 See source files for details.
 
 Permission is hereby granted, free of charge, to any person obtaining

README.md

 # libffi tarballs for GHC
 
-This repository contains the source tarballs used to
-build [libffi](https://github.com/libffi/libffi/issues/296)
-for [GHC](https://ghc.haskell.org/). While in principle this repository should
-contain official source tarballs from the libffi project, the
-recent [lack of releases](https://github.com/libffi/libffi/issues/296) has meant
-that we have had to start packaging our own snapshots.
+This repository contains the official source tarballs used to build
+[libffi](https://github.com/libffi/libffi) for
+[GHC](https://ghc.haskell.org/).
 
-Note that in order to reduce working tree size, this repository contains only
-orphan branches. Each branch contains one source tarball. These tarballs and
-their branches are generated using the `mk-snapshot.sh` script.
-
-In order to update the `libffi` version built by GHC, first run
-`mk-snapshot.sh`, then push the resulting branch to `git.haskell.org`, and
-finally update the submodule commit in the `ghc` repository.
+In order to update the `libffi` version built by GHC, first land a
+merge request to
+[`libffi-tarballs`](https://gitlab.haskell.org/ghc/libffi-tarballs),
+then update the submodule commit in the `ghc` repository.

mk-snapshot.sh

-#!/bin/bash -e
-
-# Create a snapshot of the libffi repository from github, as a workaround for
-# the lack of recent releases of libffi (see https://github.com/libffi/libffi/issues/296)
-
-GVERS=3.99999 # see configure.ac / AC_INIT
-
-# make a temporary directory and perform operations in there.
-TMPD=$(mktemp -d)
-TDIR=$(pwd)
-
-# clone the repository (shallow is sufficient)
-git -C ${TMPD} clone --depth 1 https://github.com/bgamari/libffi.git
-REPO="${TMPD}/libffi"
-
-# record the revision and create a copy of only the files
-# contained in the repository at libffi-<revision>
-GHASH=$(git -C ${REPO} rev-parse --short HEAD)
-GDATE=$(git -C ${REPO} log -1 --pretty=format:%cd --date=format:%Y%m%d)
-SUFFIX="${GVERS}+git${GDATE}+${GHASH}"
-
-# run autogen and generate distribution tarball.
-(cd "$REPO" && ./autogen.sh && ./configure && make dist)
-
-# package it up
-DISTLIB="libffi-${GVERS}.tar.gz"
-FINALLIB="libffi-${SUFFIX}.tar.gz"
-mv "$REPO/$DISTLIB" ./$FINALLIB
-
-# create orphan libffi-tarballs branch
-git checkout --orphan "libffi-${SUFFIX}"
-git add $FINALLIB
-cat >README.md <<EOF
-# libffi snapshot tarball for GHC
-
-This source snapshot was produced from
-[libffi](https://github.com/libffi/libffi) commit
-[${GHASH}](https://github.com/libffi/libffi/commit/${GHASH}) for GHC. See the
-\`master\` branch of this repository for more information about the rationale
-and tools for producing these snapshots.
-EOF
-git add README.md
-git rm --cached mk-snapshot.sh
-git commit -m "Snapshot of libffi ${GHASH}"
-git checkout -f master
-
-echo "Created branch libffi-${SUFFIX}"