BuildSystem: Rewrite whole build system structure

Now you have to use script/build.sh for building and running banan-os

script/build.sh

@@ -0,0 +1,107 @@
+#!/bin/bash
+set -e
+
+if [[ -z $BANAN_ARCH ]]; then
+	export BANAN_ARCH=x86_64
+fi
+
+export BANAN_SCRIPT_DIR=$(dirname $(realpath $0))
+source $BANAN_SCRIPT_DIR/config.sh
+
+make_build_dir () {
+	if ! [[ -d $BANAN_BUILD_DIR ]]; then
+		mkdir -p $BANAN_BUILD_DIR
+		cd $BANAN_BUILD_DIR
+		cmake --toolchain=$BANAN_TOOLCHAIN_DIR/Toolchain.txt -G Ninja $BANAN_ROOT_DIR $BANAN_CMAKE_ARGS
+	fi
+}
+
+build_target () {
+	make_build_dir
+	if [[ -z $1 ]]; then
+		echo "No target provided"
+		exit 1
+	fi
+	cd $BANAN_BUILD_DIR
+	ninja $1
+}
+
+build_toolchain () {
+	$BANAN_TOOLCHAIN_DIR/build.sh
+	build_target libc-install
+	$BANAN_TOOLCHAIN_DIR/build.sh libstdc++
+}
+
+create_image () {
+	build_target install-sysroot
+	if [[ "$1" == "full" ]]; then
+		$BANAN_SCRIPT_DIR/image-full.sh
+	else
+		$BANAN_SCRIPT_DIR/image.sh
+	fi
+}
+
+run_qemu () {
+	create_image
+	$BANAN_SCRIPT_DIR/qemu.sh $@
+}
+
+run_bochs () {
+	create_image
+	$BANAN_SCRIPT_DIR/bochs.sh $@
+}
+
+if [[ "$1" == "toolchain" ]]; then
+	if [[ -f $BANAN_TOOLCHAIN_PREFIX/bin/$BANAN_TOOLCHAIN_TRIPLE_PREFIX-gcc ]]; then
+		echo "You already seem to have build toolchain."
+		read -e -p "Do you want to rebuild it [y/N]? " choice
+		if ! [[ "$choice" == [Yy]* ]]; then
+			echo "Aborting toolchain rebuild"
+			exit 0
+		fi
+	fi
+
+	build_toolchain
+	exit 0
+fi
+
+if [[ "$1" == "image" ]]; then
+	create_image
+	exit 0
+fi
+
+if [[ "$1" == "image-full" ]]; then
+	create_image full
+	exit 0
+fi
+
+if [[ "$(uname)" == "Linux" ]]; then
+	QEMU_ACCEL="-accel kvm"
+fi
+
+if [[ "$1" == "qemu" ]]; then
+	run_qemu -serial stdio $QEMU_ACCEL
+	exit 0
+fi
+
+if [[ "$1" == "qemu-nographic" ]]; then
+	run_qemu -nographic $QEMU_ACCEL
+	exit 0
+fi
+
+if [[ "$1" == "qemu-debug" ]]; then
+	run_qemu -serial stdio -d int -no-reboot
+	exit 0
+fi
+
+if [[ "$1" == "bochs" ]]; then
+	run_bochs
+	exit 0
+fi
+
+if [[ "$1" == "check-fs" ]]; then
+	$BANAN_SCRIPT_DIR/check-fs.sh
+	exit 0
+fi
+
+build_target $1