Resolve circular dependency between linuxdeploy and this plugin

ci/build-appimage.sh

@@ -43,17 +43,12 @@ make install DESTDIR=AppDir
 AIK_ARCH="$ARCH"
 [ "$ARCH" == "i386" ] && AIK_ARCH="i686"
 
-wget https://github.com/TheAssassin/linuxdeploy/releases/download/continuous/linuxdeploy-"$ARCH".AppImage
-chmod +x linuxdeploy-"$ARCH".AppImage
-
-# bundle appimagetool
-wget https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-"$AIK_ARCH".AppImage
+bash "$REPO_ROOT"/ci/build-bundle.sh
 
-chmod +x appimagetool-"$AIK_ARCH".AppImage
+mv linuxdeploy-plugin-appimage-bundle AppDir
 
-./appimagetool-"$AIK_ARCH".AppImage --appimage-extract
-mv squashfs-root/ AppDir/appimagetool-prefix/
-ln -s ../../appimagetool-prefix/AppRun AppDir/usr/bin/appimagetool
+wget https://github.com/TheAssassin/linuxdeploy/releases/download/continuous/linuxdeploy-"$ARCH".AppImage
+chmod +x linuxdeploy-"$ARCH".AppImage
 
 export UPD_INFO="gh-releases-zsync|linuxdeploy|linuxdeploy-plugin-appimage|continuous|linuxdeploy-plugin-appimage-$ARCH.AppImage"
 

ci/build-bundle.sh

@@ -0,0 +1,59 @@
+#! /bin/bash
+
+set -euxo pipefail
+
+# use RAM disk if possible
+if [ "${CI:-}" == "" ] && [ -d /docker-ramdisk ]; then
+    TEMP_BASE=/docker-ramdisk
+else
+    TEMP_BASE=/tmp
+fi
+
+BUILD_DIR=$(mktemp -d -p "$TEMP_BASE" linuxdeploy-plugin-appimage-build-XXXXXX)
+
+cleanup() {
+    if [ -d "$BUILD_DIR" ]; then
+        rm -rf "$BUILD_DIR"
+    fi
+}
+
+trap cleanup EXIT
+
+# store repo root as variable
+REPO_ROOT="$(readlink -f "$(dirname "$(dirname "$0")")")"
+OLD_CWD="$(readlink -f .)"
+
+pushd "$BUILD_DIR"
+
+case "$ARCH" in
+    x86_64|armhf|aarch64)
+        AIK_ARCH="$ARCH"
+        ;;
+    i386)
+        AIK_ARCH="i686"
+        ;;
+    *)
+        echo "Architecture not supported: $ARCH" 1>&2
+        exit 1
+        ;;
+esac
+
+cmake -G Ninja "$REPO_ROOT" -DCMAKE_INSTALL_PREFIX=/usr -DUSE_CCACHE=ON -DCMAKE_BUILD_TYPE=RelWithDebInfo "${EXTRA_CMAKE_ARGS[@]}"
+
+nprocs="$(nproc)"
+[[ "$nprocs" -gt 2 ]] && nprocs="$(nproc --ignore=1)"
+
+ninja -v -j"$nprocs"
+
+env DESTDIR=linuxdeploy-plugin-appimage-bundle ninja -v install
+
+# linuxdeploy-plugin-appimage-bundle appimagetool
+wget https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-"$AIK_ARCH".AppImage
+
+chmod +x appimagetool-"$AIK_ARCH".AppImage
+
+./appimagetool-"$AIK_ARCH".AppImage --appimage-extract
+mv squashfs-root/ linuxdeploy-plugin-appimage-bundle/appimagetool-prefix/
+ln -s ../../appimagetool-prefix/AppRun linuxdeploy-plugin-appimage-bundle/usr/bin/appimagetool
+
+mv linuxdeploy-plugin-appimage-bundle "$OLD_CWD"