feat: make install

Makefile

@@ -1,7 +1,10 @@
 # webkit2_41: Arch and recent distros only ship WebKitGTK 4.1.
 TAGS := desktop,production,webkit2_41
 
-.PHONY: build frontend dev test screenshots clean
+PREFIX ?= /usr/local
+DESTDIR ?=
+
+.PHONY: build frontend dev test screenshots install uninstall clean
 
 build: frontend
 	go build -tags $(TAGS) -ldflags "-s -w" -o build/bin/plotzilla .
@@ -22,5 +25,23 @@ screenshots: frontend
 	cd tools/screenshots && npm install --no-fund
 	go run ./tools/screenshots $(SCREENSHOTS_FLAGS)
 
+# Binary, launcher, icon and the .fountain / .fdx MIME types. The last three
+# lines refresh the desktop caches; they are skipped when staging (DESTDIR).
+install:
+	install -Dm755 build/bin/plotzilla $(DESTDIR)$(PREFIX)/bin/plotzilla
+	install -Dm644 desktop/plotzilla.desktop $(DESTDIR)$(PREFIX)/share/applications/plotzilla.desktop
+	install -Dm644 desktop/plotzilla.svg $(DESTDIR)$(PREFIX)/share/icons/hicolor/scalable/apps/plotzilla.svg
+	install -Dm644 desktop/plotzilla-mime.xml $(DESTDIR)$(PREFIX)/share/mime/packages/plotzilla.xml
+	[ -n "$(DESTDIR)" ] || update-mime-database $(PREFIX)/share/mime || true
+	[ -n "$(DESTDIR)" ] || update-desktop-database -q $(PREFIX)/share/applications || true
+	[ -n "$(DESTDIR)" ] || gtk-update-icon-cache -qtf $(PREFIX)/share/icons/hicolor || true
+
+uninstall:
+	rm -f $(DESTDIR)$(PREFIX)/bin/plotzilla \
+		$(DESTDIR)$(PREFIX)/share/applications/plotzilla.desktop \
+		$(DESTDIR)$(PREFIX)/share/icons/hicolor/scalable/apps/plotzilla.svg \
+		$(DESTDIR)$(PREFIX)/share/mime/packages/plotzilla.xml
+	[ -n "$(DESTDIR)" ] || update-mime-database $(PREFIX)/share/mime || true
+
 clean:
 	rm -rf build/bin frontend/dist/assets frontend/dist/index.html