More build notes

Makefile

@@ -5,6 +5,12 @@ PY_FILES = $(wildcard *.py) $(wildcard gui/*.py)
 UI_COMPILED = $(UI_FILES:.ui=.py)
 TS_COMPILED = $(TS_FILES:.ts=.qm)
 
+ifeq (, $(shell which python3))
+PY ?= python
+else
+PY ?= python3
+endif
+
 %.py: %.ui
 	pyuic5 $< > $@
 
@@ -18,10 +24,13 @@ clean:
 	rm $(TS_COMPILED)
 
 run: all
-	python3 luftdaten-tool.py
+	$(PY) luftdaten-tool.py
 
 dist: all
-	python3 -m PyInstaller luftdaten-tool.spec
+	$(PY) -m PyInstaller luftdaten-tool.spec
+
+deps:
+	$(PY) -m pip install -U -r requirements.txt
 
 i18n-update:
 	@for f in $(TS_FILES) ; do \

README.md

@@ -7,17 +7,35 @@ Binary builds
 Our main target is having working prebuilt binaries for users to simply
 download and run, to avoid all the setup below.
 
+### Linux
+Currently Linux builds require *Python 3.6* (but 3.7 seems to work fine as
+well), GNU make and Qt Linguist tools. Following packages should suffice on
+Ubuntu:
+
+    sudo apt install qttools5-dev-tools python3.6 make
+
+Then, to install python dependencies and build the binary use:
+
+    make deps dist
+
 ### Windows
 
 Currently Windows builds require *Python 3.6* installed system-wide and added to
 `%PATH%`.
 
+To install python and cygwin dependencies and build everything use
+`windows-build.bat` batch script.
+
 ### MacOS
 Currently MacOS builds require *Python 3.6* and Qt SDK installed (just the "Qt >
 5... > macOS" part in installer) with following added to $PATH:
 
     export PATH="$HOME/Qt/5.11.1/clang_64/bin:$PATH"
 
+Then just install dependencies and build everything using:
+
+    make deps dist
+
 Development
 -----------
 

windows-build.bat

@@ -0,0 +1,19 @@
+if not exist build mkdir build
+
+rem Download cygwin installer
+if not exist build\cygwin-x86.exe powershell -Command "Invoke-WebRequest https://cygwin.com/setup-x86.exe -OutFile build\cygwin-x86.exe"
+
+rem Install required Cygwin packages
+if not exist build\cygwin build\cygwin-x86.exe --site http://cygwin.mirror.constant.com ^
+	--no-shortcuts ^
+	--no-desktop ^
+	--quiet-mode ^
+	--root "%cd%\build\cygwin" ^
+	--arch x86 ^
+	--local-package-dir "%cd%\build\cygwin-packages" ^
+	--verbose ^
+	--prune-install ^
+	--no-admin ^
+	--packages qt5-linguist-tools,make
+
+build\cygwin\bin\bash.exe --login -i -c "ln -s `which lrelease-qt5` /usr/bin/lrelease ; cd \"%cd%\" && make deps dist"