Fix docs

.gitignore

@@ -1,3 +1,2 @@
 /target
-/iso
+/build
-/gila.iso

Makefile

@@ -0,0 +1,38 @@
+
+TARGET ?= "x86_64-unknown-none"
+
+all: clean prepare gila iso run
+
+# Prepare toolchain
+prepare:
+	rustup install nightly
+	rustup target add $(TARGET)
+
+# Run the ISO in an emulator.
+run: build/gila.iso
+	qemu-system-x86_64 -drive file=build/gila.iso,format=raw,index=0,media=disk
+
+# Build the bootable kernel image.
+.PHONY: build/iso/gila
+gila: prepare $(wildcard src/*.rs)
+	mkdir -p build/iso/
+	cargo build --release -Z unstable-options --target=$(TARGET) --artifact-dir build/iso/
+
+# Build a bootable ISO and install Limine.
+.PHONY: build/gila.iso
+iso: build/iso/gila gila limine.conf
+	mkdir -p build/iso/limine
+	mkdir -p build/iso/EFI/BOOT
+	cp ./limine.conf build/iso/
+	cp /usr/share/limine/limine-bios.sys build/iso/limine/
+	cp /usr/share/limine/limine-bios-cd.bin build/iso/limine/
+	cp /usr/share/limine/limine-uefi-cd.bin build/iso/limine/
+	xorriso -as mkisofs -b limine/limine-bios-cd.bin -no-emul-boot \
+	-boot-load-size 4 -boot-info-table --efi-boot \
+    limine/limine-uefi-cd.bin -efi-boot-part --efi-boot-image \
+    --protective-msdos-label build/iso -o build/gila.iso
+	limine bios-install build/gila.iso
+
+clean:
+	rm -rf build
+	cargo clean

README.md

@@ -28,12 +28,21 @@ Licensed under the GNU Public License v3. See [LICENSE](LICENSE) for details.
 
 To build an ISO image that you can boot, there are several prerequisites:
 
+- `rustup` command installed
 - `limine` command installed
 - `xorriso` command installed
+- `make` command installed
+- `qemu-system-x86_64` command installed (for running)
 
-Then run the [build_iso.sh](build_iso.sh) script. It will generate `gila.iso`.
+Then run `make` to invoke the [Makefile](Makefile).
 
-Running the kernel requires `qemu-system-{ARCH}`.
+- `make prepare`: Installs needed Rust toolchain.
+- `make clean`: Cleans all built files.
+- `make gila`: Builds the kernel ELF file.
+- `make iso`: Builds the bootable ISO with Limine installed.
+- `make run`: Builds the ISO and boots it in QEMU.
+
+TODO: This build setup is not compatible with anything other than `x86_64`.
 
 You can install all these dependencies automatically by using `nix-shell` and
 supplying [shell.nix](shell.nix) as an argument.

build_iso.sh

@@ -1,31 +0,0 @@
-#!/bin/bash
-
-if [ -z "$1" ]; then
-    echo "Argument 1 must be the Rust target triple."
-    exit 1
-fi
-
-SCRIPTPATH="$( cd -- "$(dirname "$0")" >/dev/null 2>&1 || exit 1 ; pwd -P )"
-cd "$SCRIPTPATH" || exit 1
-
-rm -rf ./iso/
-rm ./gila.iso
-#cargo clean
-
-set -euxo pipefail
-
-mkdir -p ./iso/limine/
-cp ./limine.conf ./iso/
-cp /usr/share/limine/limine-bios.sys ./iso/limine/
-cp /usr/share/limine/limine-bios-cd.bin ./iso/limine/
-cp /usr/share/limine/limine-uefi-cd.bin ./iso/limine/
-
-cargo build --target="$1" --release
-cp target/"$1"/release/gila ./iso/
-
-xorriso -as mkisofs -b limine/limine-bios-cd.bin -no-emul-boot \
-    -boot-load-size 4 -boot-info-table --efi-boot \
-    limine/limine-uefi-cd.bin -efi-boot-part --efi-boot-image \
-    --protective-msdos-label iso -o gila.iso
-
-limine bios-install gila.iso

shell.nix

@@ -16,6 +16,7 @@ pkgs.mkShell {
     xorriso
     rustup
     qemu
+    make
 
   ];
 

src/display.rs

@@ -1,4 +1,5 @@
 #![allow(dead_code)]
+#![allow(unused_variables)]
 
 use vga;
 pub use vga::writers::TextWriter;