README : remplacement de la documentation d'installation par une description du Makefile

Makefile

@@ -0,0 +1,52 @@
+NAME := qemush
+
+# qemu Unix user
+QEMU_USER := qemu
+# sudo as qemu
+SUDO_QEMU := sudo -u $(QEMU_USER)
+
+QEMUSH := /usr/local/bin/$(NAME)
+SRC_QEMUSH := bin/$(NAME)
+
+# This repo's equivalent of effective qemu Unix user home
+SRC_QEMU_HOME := qemu
+SRC_QEMU_BIN := $(SRC_QEMU_HOME)/bin
+# Actual qemu Unix user home
+QEMU_HOME := $(shell echo ~$(QEMU_USER))
+QEMU_BIN := $(QEMU_HOME)/bin
+
+# Names of all qemush modules
+SRC_MODULES_NAMES := $(notdir $(wildcard $(SRC_QEMU_BIN)/*))
+# Target location of modules
+MODULES := $(addprefix $(QEMU_BIN)/,$(SRC_MODULES_NAMES))
+# Mode to apply
+BINS_MODE := 740
+
+# Compiler options
+CC := cc
+CC_OPTIONS = -O3
+# C sources file format
+SRC_FMT := c
+# Names of C programs to compile
+SRC_C_SOURCES_NAMES := $(notdir $(basename $(wildcard $(SRCD)/*.$(SRC_FMT))))
+# Location of C binaries
+C_BINARIES := $(addprefix $(QEMU_BIN)/,$(SRC_C_SOURCES_NAMES))
+
+# Directories in ~qemu necessary for qemush to work
+QEMUSH_DIRS_NAMES := bin launchers images
+QEMUSH_DIRS := $(addprefix $(QEMU_HOME)/,$(QEMUSH_DIRS_NAMES))
+
+all: $(QEMUSH_DIRS) $(MODULES) $(C_BINARIES) $(QEMUSH)
+
+$(QEMUSH_DIRS):
+	$(SUDO_QEMU) mkdir -p $@
+
+$(QEMUSH): $(SRC_QEMUSH)
+	sudo install -m 755 $^ $@
+
+$(MODULES): $(QEMU_HOME)%: $(SRC_QEMU_HOME)%
+	$(SUDO_QEMU) install -m $(BINS_MODE) $^ $@
+
+$(C_BINARIES): $(QEMU_BIN)%: $(SRCD)/%.$(SRC_FMT)
+	$(SUDO_QEMU) $(QEMU_USER) $(CC) $(CC_OPTIONS) -o $@ $^
+	$(SUDO_QEMU) chmod $(BINS_MODE) $@

README.md

@@ -75,36 +75,27 @@ For ease of use, you need to grant every user in the `qemu` group via
 `sudo` the right to execute commands as `qemu`. You can find an example
 `sudoers` rule in this repo's `etc/sudoers.d` folder.
 
-### Add `qemush` in the `PATH`
+### Via `Makefile` (recommended)
 
-Use your preferred way to add the `qemush` script to a folder of `PATH`.
-Recommended: copy the script in `/usr/local/bin` to make it effortlessly
-system wide.
-
-### Add `qemush` modules in `~qemu/bin`
-
-`qemush` needs reusable script modules like `diskpath` in its custom `bin`
-folder located at `~qemu/bin`. You can add them directly via `qemush` from
-this repo via the following command :
+Just run the following command at the root of this repository to install
+`qemush` (previous step is **mandatory**) :
 
 ```sh
-qemush do 'mkdir -p ~/bin && cp -v qemu/bin/* "$_"'
+make
 ```
 
-### Extra: add `first-free-port` in `PATH`
+> And what if I don't want to bindly run this obscure `Makefile` ???
 
-`first-free-port` is a small C program designed accordingly to the Unix
-philosophy to show in `stdout` the first free (not listening) TCP port
-after `argv[1]`, or `argv[1]` if it is free. You will need it to allocate
-ports to protocols like SPICE in your launching scripts (example in
-`qemu/bin/*-spice`).
+You'd be right. The next section is the exhaustive list of steps handled
+by the `Makefile` for the installation process.
 
-Example `qemush` command to add the program to a local `qemu` `bin` folder
-:
+### Manual installation (what does the `Makefile` do)
 
-```sh
-qemush do 'mkdir ~/bin && cc -o "${_}/first-free-port" src/first-free-port.c'
-```
+- Create `images`, `launchers` and `bin` directories in `~qemu`
+- Copy `qemush` scripts parts from `qemu/bin` in `~qemu/bin` with mode
+`740`
+- Compile C programs from `src` in `~qemu/bin` with mode `740`
+- Copy `bin/qemush` to `/usr/local/bin/qemush` with mode `755`
 
 ## Usage