From df69612bb185cba5391db3809deea3b7699e8b39 Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Mon, 23 Oct 2023 13:27:23 +0300
Subject: [PATCH] BuildSystem: Rewrite whole build system structure

Now you have to use script/build.sh for building and running banan-os
---
 CMakeLists.txt                        |  94 ++--------------------
 PreLoad.cmake                         |   1 -
 check-fs.sh                           |  10 ---
 image.sh                              |  30 --------
 qemu.sh                               |  19 -----
 bochs.sh => script/bochs.sh           |   2 +-
 script/build.sh                       | 107 ++++++++++++++++++++++++++
 script/check-fs.sh                    |  14 ++++
 script/config.sh                      |  27 +++++++
 image-full.sh => script/image-full.sh |  42 +++++++---
 script/image.sh                       |  45 +++++++++++
 script/qemu.sh                        |  24 ++++++
 toolchain/Toolchain.txt               |  18 +++++
 toolchain/build.sh                    |  88 +++++++++++----------
 14 files changed, 320 insertions(+), 201 deletions(-)
 delete mode 100644 PreLoad.cmake
 delete mode 100755 check-fs.sh
 delete mode 100755 image.sh
 delete mode 100755 qemu.sh
 rename bochs.sh => script/bochs.sh (85%)
 create mode 100755 script/build.sh
 create mode 100755 script/check-fs.sh
 create mode 100644 script/config.sh
 rename image-full.sh => script/image-full.sh (55%)
 create mode 100755 script/image.sh
 create mode 100755 script/qemu.sh
 create mode 100644 toolchain/Toolchain.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0c5cc6ce..31f65d0a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,35 +1,13 @@
 cmake_minimum_required(VERSION 3.26)
 
-if(DEFINED ENV{BANAN_ARCH})
-	set(BANAN_ARCH $ENV{BANAN_ARCH})
-else()
-	set(BANAN_ARCH x86_64)
-endif()
-
-set(TOOLCHAIN_PREFIX ${CMAKE_SOURCE_DIR}/toolchain/local)
-
-if(EXISTS ${TOOLCHAIN_PREFIX}/bin/${BANAN_ARCH}-banan_os-g++)
-	set(CMAKE_CXX_STANDARD 20)
-	set(CMAKE_CXX_STANDARD_REQUIRED True)
-	set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}/bin/${BANAN_ARCH}-banan_os-g++)
-	set(CMAKE_CXX_COMPILER_WORKS True)
-
-	set(CMAKE_C_COMPILER ${TOOLCHAIN_PREFIX}/bin/${BANAN_ARCH}-banan_os-gcc)
-	set(CMAKE_C_COMPILER_WORKS True)
-endif()
-
-if(DEFINED QEMU_ACCEL)
-	set(QEMU_ACCEL -accel ${QEMU_ACCEL})
-endif()
-
-if(DEFINED UEFI_BOOT)
-	set(UEFI_BOOT 1)
-endif()
+if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "banan-os")
+	message(FATAL_ERROR "CMAKE_SYSTEM_NAME is not banan-os")
+endif ()
 
 add_compile_options(-mno-sse -mno-sse2)
 add_compile_definitions(__enable_sse=0)
 
-project(banan-os CXX)
+project(banan-os CXX C ASM)
 
 set(BANAN_BASE_SYSROOT ${CMAKE_SOURCE_DIR}/base-sysroot.tar.gz)
 set(BANAN_SYSROOT ${CMAKE_BINARY_DIR}/sysroot)
@@ -37,15 +15,6 @@ set(BANAN_INCLUDE ${BANAN_SYSROOT}/usr/include)
 set(BANAN_LIB ${BANAN_SYSROOT}/usr/lib)
 set(BANAN_BIN ${BANAN_SYSROOT}/usr/bin)
 set(BANAN_BOOT ${BANAN_SYSROOT}/boot)
-set(DISK_IMAGE_PATH ${CMAKE_BINARY_DIR}/banan-os.img)
-
-set(BANAN_SCRIPT_ENV 
-	BANAN_ARCH="${BANAN_ARCH}" 
-	DISK_IMAGE_PATH="${DISK_IMAGE_PATH}" 
-	SYSROOT="${BANAN_SYSROOT}" 
-	TOOLCHAIN_PREFIX="${TOOLCHAIN_PREFIX}" 
-	UEFI_BOOT="${UEFI_BOOT}" 
-)
 
 add_subdirectory(kernel)
 add_subdirectory(BAN)
@@ -66,63 +35,10 @@ add_custom_target(headers
 	DEPENDS libelf-headers
 )
 
-add_custom_target(toolchain
-	COMMAND ${CMAKE_COMMAND} -E env ${BANAN_SCRIPT_ENV} ${CMAKE_SOURCE_DIR}/toolchain/build.sh
-	DEPENDS headers
-	USES_TERMINAL
-)
-
-add_custom_target(libstdc++
-	COMMAND ${CMAKE_COMMAND} -E env LIBSTDCPP="1" ${CMAKE_SOURCE_DIR}/toolchain/build.sh
-	DEPENDS libc-install
-	USES_TERMINAL
-)
-
-add_custom_target(image
-	COMMAND ${CMAKE_COMMAND} -E env ${BANAN_SCRIPT_ENV} ${CMAKE_SOURCE_DIR}/image.sh
+add_custom_target(install-sysroot
 	DEPENDS kernel-install
 	DEPENDS ban-install
 	DEPENDS libc-install
 	DEPENDS userspace-install
 	DEPENDS libelf-install
-	USES_TERMINAL
-)
-
-add_custom_target(image-full
-	COMMAND ${CMAKE_COMMAND} -E env ${BANAN_SCRIPT_ENV} ${CMAKE_SOURCE_DIR}/image-full.sh
-	DEPENDS kernel-install
-	DEPENDS ban-install
-	DEPENDS libc-install
-	DEPENDS userspace-install
-	DEPENDS libelf-install
-	USES_TERMINAL
-)
-
-add_custom_target(check-fs
-	COMMAND ${CMAKE_COMMAND} -E env ${BANAN_SCRIPT_ENV} ${CMAKE_SOURCE_DIR}/check-fs.sh
-	USES_TERMINAL
-)
-
-add_custom_target(qemu
-	COMMAND ${CMAKE_COMMAND} -E env ${BANAN_SCRIPT_ENV} ${CMAKE_SOURCE_DIR}/qemu.sh -serial stdio ${QEMU_ACCEL}
-	DEPENDS image
-	USES_TERMINAL
-)
-
-add_custom_target(qemu-nographic
-	COMMAND ${CMAKE_COMMAND} -E env ${BANAN_SCRIPT_ENV} ${CMAKE_SOURCE_DIR}/qemu.sh -nographic ${QEMU_ACCEL}
-	DEPENDS image
-	USES_TERMINAL
-)
-
-add_custom_target(qemu-debug
-	COMMAND ${CMAKE_COMMAND} -E env ${BANAN_SCRIPT_ENV} ${CMAKE_SOURCE_DIR}/qemu.sh -serial stdio -d int -no-reboot
-	DEPENDS image
-	USES_TERMINAL
-)
-
-add_custom_target(bochs
-	COMMAND ${CMAKE_COMMAND} -E env ${BANAN_SCRIPT_ENV} ${CMAKE_SOURCE_DIR}/bochs.sh
-	DEPENDS image
-	USES_TERMINAL
 )
diff --git a/PreLoad.cmake b/PreLoad.cmake
deleted file mode 100644
index 94a06cf8..00000000
--- a/PreLoad.cmake
+++ /dev/null
@@ -1 +0,0 @@
-set(CMAKE_GENERATOR "Ninja" CACHE INTERNAL "" FORCE)
diff --git a/check-fs.sh b/check-fs.sh
deleted file mode 100755
index 253c341c..00000000
--- a/check-fs.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/bash
-
-set -e
-
-LOOP_DEV=$(sudo losetup -f --show $DISK_IMAGE_PATH)
-sudo partprobe $LOOP_DEV
-
-sudo fsck.ext2 -fn ${LOOP_DEV}p2 || true
-
-sudo losetup -d $LOOP_DEV
diff --git a/image.sh b/image.sh
deleted file mode 100755
index c0662b8e..00000000
--- a/image.sh
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/bin/bash
-
-if [ ! -f $DISK_IMAGE_PATH ]; then
-	$(dirname "$0")/image-full.sh
-	exit 0
-fi
-
-fdisk -l $DISK_IMAGE_PATH | grep -q 'EFI System'; IMAGE_IS_UEFI=$?
-[[ $UEFI_BOOT == 1 ]]; CREATE_IS_UEFI=$?
-
-if [ $IMAGE_IS_UEFI -ne $CREATE_IS_UEFI ]; then
-	echo Converting disk image to/from UEFI
-	$(dirname "$0")/image-full.sh
-	exit 0
-fi
-
-MOUNT_DIR=/mnt
-
-LOOP_DEV=$(sudo losetup -f --show $DISK_IMAGE_PATH)
-sudo partprobe $LOOP_DEV
-
-ROOT_PARTITON=${LOOP_DEV}p2
-
-sudo mount $ROOT_PARTITON $MOUNT_DIR
-
-sudo rsync -a ${SYSROOT}/* ${MOUNT_DIR}/
-
-sudo umount $MOUNT_DIR
-
-sudo losetup -d $LOOP_DEV
diff --git a/qemu.sh b/qemu.sh
deleted file mode 100755
index 4530527a..00000000
--- a/qemu.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/bash
-set -e
-
-if [ -z ${OVMF_PATH+x} ]; then
-	OVMF_PATH="/usr/share/ovmf/x64/OVMF.fd"
-fi
-
-if [ "$UEFI_BOOT" == "1" ]; then
-	BIOS_ARGS="-bios $OVMF_PATH -net none"
-fi
-
-qemu-system-$BANAN_ARCH											\
-	-m 128														\
-	-smp 2														\
-	$BIOS_ARGS													\
-	-drive format=raw,id=disk,file=${DISK_IMAGE_PATH},if=none	\
-	-device ahci,id=ahci										\
-	-device ide-hd,drive=disk,bus=ahci.0						\
-	$@															\
diff --git a/bochs.sh b/script/bochs.sh
similarity index 85%
rename from bochs.sh
rename to script/bochs.sh
index 5a842720..adc7442d 100755
--- a/bochs.sh
+++ b/script/bochs.sh
@@ -14,7 +14,7 @@ COM1_DEVICE=$(cat $COM1_DEVICE_FILE)
 rm $COM1_DEVICE_FILE
 
 cat > $BOCHS_CONFIG_FILE << EOF
-ata0-master: type=disk, path=$DISK_IMAGE_PATH, status=inserted
+ata0-master: type=disk, path=$BANAN_DISK_IMAGE_PATH, status=inserted
 boot: disk
 clock: sync=realtime, time0=local
 display_library: x, options="gui_debug"
diff --git a/script/build.sh b/script/build.sh
new file mode 100755
index 00000000..3dff508b
--- /dev/null
+++ b/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
diff --git a/script/check-fs.sh b/script/check-fs.sh
new file mode 100755
index 00000000..9af3929b
--- /dev/null
+++ b/script/check-fs.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+set -e
+
+if [[ -z $BANAN_DISK_IMAGE_PATH ]]; then
+	echo "You must set BANAN_DISK_IMAGE_PATH environment variable" >&2
+	exit 1
+fi
+
+LOOP_DEV=$(sudo losetup -f --show $BANAN_DISK_IMAGE_PATH)
+sudo partprobe $LOOP_DEV
+
+sudo fsck.ext2 -fn ${LOOP_DEV}p2 || true
+
+sudo losetup -d $LOOP_DEV
diff --git a/script/config.sh b/script/config.sh
new file mode 100644
index 00000000..1c14b0d2
--- /dev/null
+++ b/script/config.sh
@@ -0,0 +1,27 @@
+if [[ -z $BANAN_ROOT_DIR ]]; then
+	if [[ -z $BANAN_SCRIPT_DIR ]]; then
+		export BANAN_ROOT_DIR=$BANAN_SCRIPT_DIR/..
+	else
+		echo  "You must set the BANAN_ROOT_DIR environment variable" >&2
+		exit 1
+	fi
+fi
+
+if [[ -z $BANAN_ARCH ]]; then
+	echo  "You must set the BANAN_ARCH environment variable" >&2
+	exit 1
+fi
+
+export BANAN_TOOLCHAIN_DIR=$BANAN_ROOT_DIR/toolchain
+export BANAN_TOOLCHAIN_PREFIX=$BANAN_TOOLCHAIN_DIR/local
+export BANAN_TOOLCHAIN_TRIPLE_PREFIX=$BANAN_ARCH-banan_os
+
+export BANAN_BUILD_DIR=$BANAN_ROOT_DIR/build
+
+export BANAN_SYSROOT=$BANAN_BUILD_DIR/sysroot
+
+export BANAN_DISK_IMAGE_PATH=$BANAN_BUILD_DIR/banan-os.img
+
+if [[ -z $BANAN_UEFI_BOOT ]]; then
+	export BANAN_UEFI_BOOT=0
+fi
diff --git a/image-full.sh b/script/image-full.sh
similarity index 55%
rename from image-full.sh
rename to script/image-full.sh
index 7725c7f0..25412a38 100755
--- a/image-full.sh
+++ b/script/image-full.sh
@@ -1,14 +1,34 @@
 #!/bin/bash
 set -e
 
+if [[ -z $BANAN_DISK_IMAGE_PATH ]]; then
+	echo  "You must set the BANAN_DISK_IMAGE_PATH environment variable" >&2
+	exit 1
+fi
+
+if [[ -z $BANAN_SYSROOT ]]; then
+	echo  "You must set the BANAN_SYSROOT environment variable" >&2
+	exit 1
+fi
+
+if [[ -z $BANAN_TOOLCHAIN_PREFIX ]]; then
+	echo  "You must set the BANAN_TOOLCHAIN_PREFIX environment variable" >&2
+	exit 1
+fi
+
+if [[ -z $BANAN_ARCH ]]; then
+	echo  "You must set the BANAN_ARCH environment variable" >&2
+	exit 1
+fi
+
 DISK_SIZE=$[50 * 1024 * 1024]
 MOUNT_DIR=/mnt
 
-truncate -s 0 "$DISK_IMAGE_PATH"
-truncate -s $DISK_SIZE "$DISK_IMAGE_PATH"
+truncate -s 0 "$BANAN_DISK_IMAGE_PATH"
+truncate -s $DISK_SIZE "$BANAN_DISK_IMAGE_PATH"
 
-if [ "$UEFI_BOOT" == "1" ]; then
-	sed -e 's/\s*\([-\+[:alnum:]]*\).*/\1/' << EOF | fdisk "$DISK_IMAGE_PATH" > /dev/null
+if [ "$BANAN_UEFI_BOOT" == "1" ]; then
+	sed -e 's/\s*\([-\+[:alnum:]]*\).*/\1/' << EOF | fdisk "$BANAN_DISK_IMAGE_PATH" > /dev/null
 	  g     # gpt
 	  n     # new partition
 	  1     # partition number 1
@@ -27,7 +47,7 @@ if [ "$UEFI_BOOT" == "1" ]; then
 	  w     # write changes
 EOF
 else
-	sed -e 's/\s*\([-\+[:alnum:]]*\).*/\1/' << EOF | fdisk "$DISK_IMAGE_PATH" > /dev/null
+	sed -e 's/\s*\([-\+[:alnum:]]*\).*/\1/' << EOF | fdisk "$BANAN_DISK_IMAGE_PATH" > /dev/null
 	  g     # gpt
 	  n     # new partition
 	  1     # partition number 1
@@ -47,30 +67,30 @@ else
 EOF
 fi
 
-LOOP_DEV=$(sudo losetup -f --show "$DISK_IMAGE_PATH")
+LOOP_DEV=$(sudo losetup -f --show "$BANAN_DISK_IMAGE_PATH")
 sudo partprobe $LOOP_DEV
 
 PARTITION1=${LOOP_DEV}p1
 PARTITION2=${LOOP_DEV}p2
 
-sudo mkfs.ext2 -d $SYSROOT -b 1024 -q $PARTITION2
+sudo mkfs.ext2 -d $BANAN_SYSROOT -b 1024 -q $PARTITION2
 
-if [[ "$UEFI_BOOT" == "1" ]]; then
+if [[ "$BANAN_UEFI_BOOT" == "1" ]]; then
 	sudo mkfs.fat $PARTITION1 > /dev/null
 	sudo mount $PARTITION1 "$MOUNT_DIR"
 	sudo mkdir -p "$MOUNT_DIR/EFI/BOOT"
-	sudo "$TOOLCHAIN_PREFIX/bin/grub-mkstandalone" -O "$BANAN_ARCH-efi" -o "$MOUNT_DIR/EFI/BOOT/BOOTX64.EFI" "boot/grub/grub.cfg=$TOOLCHAIN_PREFIX/grub-memdisk.cfg"
+	sudo "$BANAN_TOOLCHAIN_PREFIX/bin/grub-mkstandalone" -O "$BANAN_ARCH-efi" -o "$MOUNT_DIR/EFI/BOOT/BOOTX64.EFI" "boot/grub/grub.cfg=$BANAN_TOOLCHAIN_PREFIX/grub-memdisk.cfg"
 	sudo umount "$MOUNT_DIR"
 
 	sudo mount $PARTITION2 "$MOUNT_DIR"
 	sudo mkdir -p "$MOUNT_DIR/boot/grub"
-	sudo cp "$TOOLCHAIN_PREFIX/grub-uefi.cfg" "$MOUNT_DIR/boot/grub/grub.cfg"
+	sudo cp "$BANAN_TOOLCHAIN_PREFIX/grub-uefi.cfg" "$MOUNT_DIR/boot/grub/grub.cfg"
 	sudo umount "$MOUNT_DIR"
 else
 	sudo mount $PARTITION2 "$MOUNT_DIR"
 	sudo grub-install --no-floppy --target=i386-pc --modules="normal ext2 multiboot" --boot-directory="$MOUNT_DIR/boot" $LOOP_DEV
 	sudo mkdir -p "$MOUNT_DIR/boot/grub"
-	sudo cp "$TOOLCHAIN_PREFIX/grub-legacy-boot.cfg" "$MOUNT_DIR/boot/grub/grub.cfg"
+	sudo cp "$BANAN_TOOLCHAIN_PREFIX/grub-legacy-boot.cfg" "$MOUNT_DIR/boot/grub/grub.cfg"
 	sudo umount "$MOUNT_DIR"
 fi
 
diff --git a/script/image.sh b/script/image.sh
new file mode 100755
index 00000000..26061b47
--- /dev/null
+++ b/script/image.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+
+if [[ -z $BANAN_ROOT_DIR ]]; then
+	echo  "You must set the BANAN_ROOT_DIR environment variable" >&2
+	exit 1
+fi
+
+if [[ -z $BANAN_DISK_IMAGE_PATH ]]; then
+	echo  "You must set the BANAN_DISK_IMAGE_PATH environment variable" >&2
+	exit 1
+fi
+
+if [[ -z $BANAN_SYSROOT ]]; then
+	echo  "You must set the BANAN_SYSROOT environment variable" >&2
+	exit 1
+fi
+
+if [[ ! -f $BANAN_DISK_IMAGE_PATH ]]; then
+	$BANAN_SCRIPT_DIR/image-full.sh
+	exit 0
+fi
+
+fdisk -l $BANAN_DISK_IMAGE_PATH | grep -q 'EFI System'; IMAGE_IS_UEFI=$?
+[[ $BANAN_UEFI_BOOT == 1 ]]; CREATE_IS_UEFI=$?
+
+if [[ $IMAGE_IS_UEFI -ne $CREATE_IS_UEFI ]]; then
+	echo Converting disk image to/from UEFI
+	$BANAN_SCRIPT_DIR/image-full.sh
+	exit 0
+fi
+
+MOUNT_DIR=/mnt
+
+LOOP_DEV=$(sudo losetup -f --show $BANAN_DISK_IMAGE_PATH)
+sudo partprobe $LOOP_DEV
+
+ROOT_PARTITON=${LOOP_DEV}p2
+
+sudo mount $ROOT_PARTITON $MOUNT_DIR
+
+sudo rsync -a ${BANAN_SYSROOT}/* ${MOUNT_DIR}/
+
+sudo umount $MOUNT_DIR
+
+sudo losetup -d $LOOP_DEV
diff --git a/script/qemu.sh b/script/qemu.sh
new file mode 100755
index 00000000..82b859ac
--- /dev/null
+++ b/script/qemu.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+set -e
+
+if [[ -z $BANAN_DISK_IMAGE_PATH ]]; then
+	echo "You must set the BANAN_DISK_IMAGE_PATH environment variable" >&2
+	exit 1
+fi
+
+if [[ -z $OVMF_PATH ]]; then
+	OVMF_PATH="/usr/share/ovmf/x64/OVMF.fd"
+fi
+
+if [[ "$BANAN_UEFI_BOOT" == "1" ]]; then
+	BIOS_ARGS="-bios $OVMF_PATH -net none"
+fi
+
+qemu-system-$BANAN_ARCH												\
+	-m 128															\
+	-smp 2															\
+	$BIOS_ARGS														\
+	-drive format=raw,id=disk,file=${BANAN_DISK_IMAGE_PATH},if=none	\
+	-device ahci,id=ahci											\
+	-device ide-hd,drive=disk,bus=ahci.0							\
+	$@																\
diff --git a/toolchain/Toolchain.txt b/toolchain/Toolchain.txt
new file mode 100644
index 00000000..c208fd94
--- /dev/null
+++ b/toolchain/Toolchain.txt
@@ -0,0 +1,18 @@
+if (NOT DEFINED ENV{BANAN_ARCH})
+	message(FATAL_ERROR "environment variable BANAN_ARCH not defined")
+endif ()
+
+set(BANAN_ARCH $ENV{BANAN_ARCH})
+
+set(TOOLCHAIN_PREFIX ${CMAKE_SOURCE_DIR}/toolchain/local)
+
+set(CMAKE_SYSTEM_NAME banan-os)
+set(CMAKE_SYSTEM_PROCESSOR AMD64)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
+set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}/bin/${BANAN_ARCH}-banan_os-g++)
+set(CMAKE_CXX_COMPILER_WORKS True)
+
+set(CMAKE_C_COMPILER ${TOOLCHAIN_PREFIX}/bin/${BANAN_ARCH}-banan_os-gcc)
+set(CMAKE_C_COMPILER_WORKS True)
diff --git a/toolchain/build.sh b/toolchain/build.sh
index 8da3970e..057c475d 100755
--- a/toolchain/build.sh
+++ b/toolchain/build.sh
@@ -5,22 +5,23 @@ BINUTILS_VERSION="binutils-2.39"
 GCC_VERSION="gcc-12.2.0"
 GRUB_VERSION="grub-2.06"
 
-cd $(dirname "$0")
-
-if [[ -n $LIBSTDCPP ]]; then
-	cd build/${GCC_VERSION}/
-	make -j $(nproc) all-target-libstdc++-v3
-	make install-target-libstdc++-v3
-	exit 0
-fi
-
-if [[ -z $SYSROOT ]]; then
-	echo "You must set the SYSROOT environment variable" >&2
+if [[ -z $BANAN_SYSROOT ]]; then
+	echo "You must set the BANAN_SYSROOT environment variable" >&2
 	exit 1
 fi
 
-if [[ -z $TOOLCHAIN_PREFIX ]]; then
-	echo "You must set the TOOLCHAIN_PREFIX environment variable" >&2
+if [[ -z $BANAN_TOOLCHAIN_DIR ]]; then
+	echo "You must set the BANAN_TOOLCHAIN_DIR environment variable" >&2
+	exit 1
+fi
+
+if [[ -z $BANAN_TOOLCHAIN_PREFIX ]]; then
+	echo "You must set the BANAN_TOOLCHAIN_PREFIX environment variable" >&2
+	exit 1
+fi
+
+if [[ -z $BANAN_TOOLCHAIN_TRIPLE_PREFIX ]]; then
+	echo "You must set the BANAN_TOOLCHAIN_TRIPLE_PREFIX environment variable" >&2
 	exit 1
 fi
 
@@ -29,12 +30,11 @@ if [[ -z $BANAN_ARCH ]]; then
 	exit 1
 fi
 
-TARGET="${BANAN_ARCH}-banan_os"
-
-if [ ! -f ${TOOLCHAIN_PREFIX}/bin/${TARGET}-ld ]; then
-
+build_binutils () {
 	echo "Building ${BINUTILS_VERSION}"
 
+	cd $BANAN_TOOLCHAIN_DIR
+
 	if [ ! -f ${BINUTILS_VERSION}.tar.xz ]; then
 		wget https://ftp.gnu.org/gnu/binutils/${BINUTILS_VERSION}.tar.xz
 	fi
@@ -45,26 +45,24 @@ if [ ! -f ${TOOLCHAIN_PREFIX}/bin/${TARGET}-ld ]; then
 	fi
 
 	mkdir -p build/${BINUTILS_VERSION}/
-	pushd build/${BINUTILS_VERSION}/
+	cd build/${BINUTILS_VERSION}/
 
 	../../${BINUTILS_VERSION}/configure \
-		--target="$TARGET" \
-		--prefix="$TOOLCHAIN_PREFIX" \
-		--with-sysroot="$SYSROOT" \
+		--target="$BANAN_TOOLCHAIN_TRIPLE_PREFIX" \
+		--prefix="$BANAN_TOOLCHAIN_PREFIX" \
+		--with-sysroot="$BANAN_SYSROOT" \
 		--disable-nls \
 		--disable-werror
 
 	make -j $(nproc)
 	make install
+}
 
-	popd
-
-fi
-
-if [ ! -f ${TOOLCHAIN_PREFIX}/bin/${TARGET}-g++ ]; then
-
+build_gcc () {
 	echo "Building ${GCC_VERSION}"
 
+	cd $BANAN_TOOLCHAIN_DIR
+
 	if [ ! -f ${GCC_VERSION}.tar.xz ]; then
 		wget https://ftp.gnu.org/gnu/gcc/${GCC_VERSION}/${GCC_VERSION}.tar.xz
 	fi
@@ -75,27 +73,25 @@ if [ ! -f ${TOOLCHAIN_PREFIX}/bin/${TARGET}-g++ ]; then
 	fi
 
 	mkdir -p build/${GCC_VERSION}/
-	pushd build/${GCC_VERSION}/
+	cd build/${GCC_VERSION}/
 
 	../../${GCC_VERSION}/configure \
-		--target="$TARGET" \
-		--prefix="$TOOLCHAIN_PREFIX" \
-		--with-sysroot="$SYSROOT" \
+		--target="$BANAN_TOOLCHAIN_TRIPLE_PREFIX" \
+		--prefix="$BANAN_TOOLCHAIN_PREFIX" \
+		--with-sysroot="$BANAN_SYSROOT" \
 		--disable-nls \
 		--enable-languages=c,c++
 
 	make -j $(nproc) all-gcc 
 	make -j $(nproc) all-target-libgcc CFLAGS_FOR_TARGET='-g -O2 -mcmodel=large -mno-red-zone'
 	make install-gcc install-target-libgcc
+}
 
-	popd
-
-fi
-
-if [ ! -f ${TOOLCHAIN_PREFIX}/bin/grub-mkstandalone ]; then
-
+build_grub () {
 	echo "Building ${GRUB_VERSION}"
 
+	cd $BANAN_TOOLCHAIN_DIR
+
 	if [ ! -f ${GRUB_VERSION}.tar.xz ]; then
 		wget https://ftp.gnu.org/gnu/grub/${GRUB_VERSION}.tar.xz
 	fi
@@ -105,17 +101,29 @@ if [ ! -f ${TOOLCHAIN_PREFIX}/bin/grub-mkstandalone ]; then
 	fi
 
 	mkdir -p build/${GRUB_VERSION}/
-	pushd build/${GRUB_VERSION}/
+	cd build/${GRUB_VERSION}/
 
 	../../${GRUB_VERSION}/configure \
 		--target="$BANAN_ARCH" \
-		--prefix="$TOOLCHAIN_PREFIX" \
+		--prefix="$BANAN_TOOLCHAIN_PREFIX" \
 		--with-platform="efi" \
 		--disable-werror
 	
 	make -j $(nproc)
 	make install
+}
 
-	popd
+build_libstdcpp () {
+	cd build/${GCC_VERSION}/
+	make -j $(nproc) all-target-libstdc++-v3
+	make install-target-libstdc++-v3
+}
 
+if [[ "$1" == "libstdc++" ]]; then
+	build_libstdcpp
+	exit 0
 fi
+
+build_binutils
+build_gcc
+build_grub