dist: AppImage #6638

scripts/genappimage.sh produces an executable:
    nvim-${NVIM_VERSION}-glibc${GLIBC_VERSION}-${ARCHITECTURE}.AppImage

Closes #6083

Makefile

@@ -135,6 +135,9 @@ clint-full: build/.ran-cmake
 check-single-includes: build/.ran-cmake
 	+$(BUILD_CMD) -C build check-single-includes
 
+appimage:
+	bash scripts/genappimage.sh
+
 lint: check-single-includes clint testlint
 
-.PHONY: test testlint functionaltest unittest lint clint clean distclean nvim libnvim cmake deps install
+.PHONY: test testlint functionaltest unittest lint clint clean distclean nvim libnvim cmake deps install appimage

scripts/genappimage.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+
+########################################################################
+# Package the binaries built as an AppImage
+# By Simon Peter 2016
+# For more information, see http://appimage.org/
+########################################################################
+
+# App arch, used by generate_appimage.
+if [ -z "$ARCH" ]; then
+  export ARCH="$(arch)"
+fi
+
+# App name, used by generate_appimage.
+APP=nvim
+
+ROOT_DIR="$(git rev-parse --show-toplevel)"
+APP_BUILD_DIR="$ROOT_DIR/build"
+APP_DIR="$APP.AppDir"
+
+# App version, used by generate_appimage.
+VERSION=$("$ROOT_DIR"/build/bin/nvim --version | head -n 1 | grep -o 'v.*')
+
+########################################################################
+# Compile nvim and install it into AppDir
+########################################################################
+
+# Build and install nvim into the AppImage
+make CMAKE_BUILD_TYPE=RelWithDebInfo CMAKE_EXTRA_FLAGS="-DCMAKE_INSTALL_PREFIX=${APP_DIR}/usr"
+make install
+
+########################################################################
+# Get helper functions and move to AppDir
+########################################################################
+
+cd "$APP_BUILD_DIR"
+mkdir "$APP_DIR"
+
+curl -Lo "$APP_BUILD_DIR"/appimage_functions.sh https://github.com/probonopd/AppImages/raw/master/functions.sh
+. ./appimage_functions.sh
+
+# Copy desktop and icon file to AppDir for AppRun to pick them up.
+# get_apprun
+# get_desktop
+cp "$ROOT_DIR/runtime/nvim.desktop" "$APP_DIR/"
+cp "$ROOT_DIR/runtime/nvim.png" "$APP_DIR/"
+
+cd "$APP_DIR"
+
+# copy dependencies
+copy_deps
+# Move the libraries to usr/bin
+move_lib
+
+# Delete stuff that should not go into the AppImage.
+# Delete dangerous libraries; see
+# https://github.com/probonopd/AppImages/blob/master/excludelist
+delete_blacklisted
+
+########################################################################
+# AppDir complete. Now package it as an AppImage.
+########################################################################
+
+# No need for a fancy script. AppRun can just be a symlink to nvim.
+ln -s usr/bin/nvim AppRun
+
+cd "$APP_BUILD_DIR" # Get out of AppImage directory.
+
+# Generate AppImage.
+#   - Expects: $ARCH, $APP, $VERSION env vars
+#   - Expects: ./$APP.AppDir/ directory
+#   - Produces: ../out/$APP-$VERSION.glibc$GLIBC_NEEDED-$ARCH.AppImage
+generate_appimage
+
+# NOTE: There is currently a bug in the `generate_appimage` function (see
+# https://github.com/probonopd/AppImages/issues/228) that causes repeated builds
+# that result in the same name to fail.
+# Moving the final executable to a different folder gets around this issue.
+
+mv "$ROOT_DIR"/out/*.AppImage "$ROOT_DIR"/build/bin
+# Remove the (now empty) folder the AppImage was built in
+rmdir "$ROOT_DIR"/out