Adjustments for creating installations on various operating systems

Add code signing options for macOS.
Adjust make.bat to create venv to use PyInstaller.
Preparing script for Linux to use in /usr/bin.

Makefile

@@ -4,9 +4,12 @@ MAKEFLAGS     = --no-print-directory --no-builtin-rules
 
 # Variables
 PACKAGE = revpicommander
+APP_NAME = RevPi\ Commander
+APP_IDENT = org.revpimodio.revpicommander
+APPLE_SIG = "Developer ID Application: Sven Sager (U3N5843D9K)"
 
-# If virtualenv exists, use it. If not, use PATH to find
-SYSTEM_PYTHON  = $(or $(shell which python3), $(shell which python))
+# If virtualenv exists, use it. If not, use PATH to find, except python3
+SYSTEM_PYTHON  = /usr/bin/python3
 PYTHON         = $(or $(wildcard venv/bin/python), $(SYSTEM_PYTHON))
 SYSTEM_PYUIC5  = $(shell which pyuic5)
 PYUIC5         = $(or $(wildcard venv/bin/pyuic5), $(SYSTEM_PYUIC5))
@@ -15,10 +18,22 @@ PYRCC5         = $(or $(wildcard venv/bin/pyrcc5), $(SYSTEM_PYRCC5))
 SYSTEM_PYLUP5  = $(shell which pylupdate5)
 PYLUP5         = $(or $(wildcard venv/bin/pylupdate5), $(SYSTEM_PYLUP5))
 
+APP_VERSION = $(shell $(PYTHON) src/$(PACKAGE) --version)
+
 all: build_ui build_rc build
 
 .PHONY: all
 
+## Environment
+venv:
+	$(SYSTEM_PYTHON) -m venv venv
+	source venv/bin/activate && \
+		python3 -m pip install --upgrade pip && \
+		python3 -m pip install -r requirements.txt
+	exit 0
+
+.PHONY: venv
+
 ## Compile Qt UI files to python code
 build_ui:
 	cd ui_dev && for ui_file in *.ui; do \
@@ -39,16 +54,6 @@ update_translation:
 
 .PHONY: build_ui build_rc update_translation
 
-## Environment
-venv:
-	rm -rf venv
-	$(SYSTEM_PYTHON) -m venv venv
-
-deps:
-	$(PYTHON) -m pip install --upgrade pip -r requirements.txt
-
-.PHONY: venv deps
-
 ## Build, install
 build: build_ui build_rc
 	$(PYTHON) -m setup sdist
@@ -60,24 +65,44 @@ install:
 .PHONY: build install
 
 ## PyInstaller
-installer_mac: build
-	$(PYTHON) -m PyInstaller -n "RevPi Commander" \
-		--add-data="src/$(PACKAGE)/locale:./revpicommander/locale" \
+installer_mac: build_ui build_rc
+	$(PYTHON) -m PyInstaller -n $(APP_NAME) \
+		--add-data="src/$(PACKAGE)/locale:./$(PACKAGE)/locale" \
 		--add-data="data/$(PACKAGE).icns:." \
 		--icon=data/$(PACKAGE).icns \
 		--noconfirm \
 		--clean \
 		--onedir \
 		--windowed \
+		--osx-bundle-identifier $APP_IDENT \
+		--codesign-identity $(APPLE_SIG) \
 		src/$(PACKAGE)/__main__.py
 
-installer_win: all
-	make_installer_win.bat
+installer_mac_dmg: installer_mac
+	mkdir dist/dmg
+	mv dist/$(APP_NAME).app dist/dmg
+	create-dmg \
+		--volname $(APP_NAME) \
+		--background data/dmg_background.png \
+		--window-pos 200 120 \
+		--window-size 480 300 \
+		--icon-size 64 \
+		--icon $(APP_NAME).app 64 64 \
+		--hide-extension $(APP_NAME).app \
+		--app-drop-link 288 64 \
+		--add-file LICENSE.txt LICENSE.txt 192 180 \
+		--codesign $(APPLE_SIG) \
+		--notarize AC_PASSWORD \
+		dist/$(APP_NAME)\ $(APP_VERSION).dmg \
+		dist/dmg
 
-.PHONY: installer_mac installer_win
+.PHONY: installer_mac installer_mac_dmg
 
 ## Clean
 clean:
 	rm -rf build dist src/*.egg-info *.spec
 
-.PHONY: clean
+clean-all: clean
+	rm -R venv
+
+.PHONY: clean clean-all