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electrum/contrib/build-linux/appimage/build.sh
f321x b93ffdd79d appimage: bump appimagetool to new version/repo
Updates the appimage build scripts to use the newer
https://github.com/AppImage/appimagetool tool to bundle the appimage
instead of the discontinued https://github.com/AppImage/AppImageKit.
To prevent the new appimagetool from downloading a random "latest"
appimage runtime (`type2-runtime`) binary this PR also adds
functionality to clone and build
https://github.com/AppImage/type2-runtime from source. This is done
using the build scripts provided in the `type2-runtime` repository,
however the Dockerfile they use for building is replaced by a copy with
pinned package versions to prevent issues with reproducibility.

This should fix the issue of missing libfuse2 which users of the appimage
have on "modern" distributions.
The new `type2-runtime` is statically linked and includes the required
dependencies now instead of relying on the host to provide it.
2025-08-12 11:06:11 +02:00

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#!/bin/bash
#
# env vars:
# - ELECBUILD_NOCACHE: if set, forces rebuild of docker image
# - ELECBUILD_COMMIT: if set, do a fresh clone and git checkout
set -e
PROJECT_ROOT="$(dirname "$(readlink -e "$0")")/../../.."
PROJECT_ROOT_OR_FRESHCLONE_ROOT="$PROJECT_ROOT"
CONTRIB="$PROJECT_ROOT/contrib"
CONTRIB_APPIMAGE="$CONTRIB/build-linux/appimage"
DISTDIR="$PROJECT_ROOT/dist"
BUILD_UID=$(/usr/bin/stat -c %u "$PROJECT_ROOT")
# when bumping the runtime commit also check if the `type2-runtime-reproducible-build.patch` still works
TYPE2_RUNTIME_COMMIT="5e7217b7cfeecee1491c2d251e355c3cf8ba6e4d"
TYPE2_RUNTIME_REPO="https://github.com/AppImage/type2-runtime.git"
. "$CONTRIB"/build_tools_util.sh
DOCKER_BUILD_FLAGS=""
if [ ! -z "$ELECBUILD_NOCACHE" ] ; then
info "ELECBUILD_NOCACHE is set. forcing rebuild of docker image."
DOCKER_BUILD_FLAGS="--pull --no-cache"
fi
if [ -z "$ELECBUILD_COMMIT" ] ; then # local dev build
DOCKER_BUILD_FLAGS="$DOCKER_BUILD_FLAGS --build-arg UID=$BUILD_UID"
fi
info "building docker image."
docker build \
$DOCKER_BUILD_FLAGS \
-t electrum-appimage-builder-img \
"$CONTRIB_APPIMAGE"
# maybe do fresh clone
if [ ! -z "$ELECBUILD_COMMIT" ] ; then
info "ELECBUILD_COMMIT=$ELECBUILD_COMMIT. doing fresh clone and git checkout."
FRESH_CLONE="/tmp/electrum_build/appimage/fresh_clone/electrum"
rm -rf "$FRESH_CLONE" 2>/dev/null || ( info "we need sudo to rm prev FRESH_CLONE." && sudo rm -rf "$FRESH_CLONE" )
umask 0022
git clone "$PROJECT_ROOT" "$FRESH_CLONE"
cd "$FRESH_CLONE"
git checkout "$ELECBUILD_COMMIT"
PROJECT_ROOT_OR_FRESHCLONE_ROOT="$FRESH_CLONE"
else
info "not doing fresh clone."
fi
# build the type2-runtime binary, this build step uses a separate docker container
# defined in the type2-runtime repo (patched with type2-runtime-reproducible-build.patch)
TYPE2_RUNTIME_REPO_DIR="$PROJECT_ROOT_OR_FRESHCLONE_ROOT/contrib/build-linux/appimage/.cache/appimage/type2-runtime"
(
if [ -f "$TYPE2_RUNTIME_REPO_DIR/runtime-x86_64" ]; then
info "type2-runtime already built, skipping"
exit 0
fi
clone_or_update_repo "$TYPE2_RUNTIME_REPO" "$TYPE2_RUNTIME_COMMIT" "$TYPE2_RUNTIME_REPO_DIR"
# Apply patch to make runtime build reproducible
info "Applying type2-runtime patch..."
cd "$TYPE2_RUNTIME_REPO_DIR"
git apply "$CONTRIB_APPIMAGE/patches/type2-runtime-reproducible-build.patch" || fail "Failed to apply runtime repo patch"
info "building type2-runtime in build container..."
cd "$TYPE2_RUNTIME_REPO_DIR/scripts/docker"
env ARCH=x86_64 ./build-with-docker.sh
mv "./runtime-x86_64" "$TYPE2_RUNTIME_REPO_DIR/"
# clean up the empty created 'out' dir to prevent permission issues
rm -rf "$TYPE2_RUNTIME_REPO_DIR/out"
info "runtime build successful: $(sha256sum "$TYPE2_RUNTIME_REPO_DIR/runtime-x86_64")"
) || fail "Failed to build type2-runtime"
info "building binary..."
# check uid and maybe chown. see #8261
if [ ! -z "$ELECBUILD_COMMIT" ] ; then # fresh clone (reproducible build)
if [ $(id -u) != "1000" ] || [ $(id -g) != "1000" ] ; then
info "need to chown -R FRESH_CLONE dir. prompting for sudo."
sudo chown -R 1000:1000 "$FRESH_CLONE"
fi
fi
docker run -it \
--name electrum-appimage-builder-cont \
-v "$PROJECT_ROOT_OR_FRESHCLONE_ROOT":/opt/electrum \
--rm \
--workdir /opt/electrum/contrib/build-linux/appimage \
electrum-appimage-builder-img \
./make_appimage.sh
# make sure resulting binary location is independent of fresh_clone
if [ ! -z "$ELECBUILD_COMMIT" ] ; then
mkdir --parents "$DISTDIR/"
cp -f "$FRESH_CLONE/dist"/* "$DISTDIR/"
fi