[TOOLCHAIN] Building cross compiler, debugger and bootloader
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.gitignore
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.gitignore
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toolchain/
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10
Makefile
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10
Makefile
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# Check that the build environment is setup
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# Idea taken from https://github.com/klange/toaruos
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ifeq ($(MITTOS64),)
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$(error Build environment is not activated. Please source activate)
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endif
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.PHONY: all
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all:
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17
README.md
17
README.md
@ -2,3 +2,20 @@ MITTOS64
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========
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========
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By Thomas Lovén - 2016
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By Thomas Lovén - 2016
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For development, start by sourcing `activate.sh`
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source ./activate.sh
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Running `make` will automatically download and compile a cross compiler
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toolchain and the grub bootloader.
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It will also download and build objconv, which is required for building grub
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under OSX. This will probably fail if you're not on a mac.
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Building the cross compiler requires a c compiler as well as gmp, mpfr and mpc.
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The c compiler installed by xcode command line tools will do. It's installed
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automatically if you install homebrew. The rest of the packages can be
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installed with homebrew. You'll also want homebrews ctags.
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homebrew install gmp mpfr libmpc ctags
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24
activate
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24
activate
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#!/usr/bin/env bash
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# This file should be sourced before building mittos64:
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# $ source ./activate
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export MITTOS64=mittos64
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. util/helpers.sh
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export BUILDROOT=`pwd`
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export TOOLCHAIN=${BUILDROOT}/toolchain
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export PATH=${TOOLCHAIN}/bin:${PATH}
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export TARGET=x86_64-elf
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# shortcuts for some useful tools
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alias dbg="x86_64-elf-linux-gdb"
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alias objd="${TARGET}-objdump"
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function decomp()
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{
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${TARGET}-objdump -S $1 | vim - -R
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}
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export PS1="(mittos64)${PS1}"
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util/build_toolchain.sh -c || util/build_toolchain.sh
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107
util/build_toolchain.sh
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107
util/build_toolchain.sh
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#!/usr/bin/env bash
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. util/toolchain_helpers.sh
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bindir=${TOOLCHAIN}/bin
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packages=(binutils gcc gdb)
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if [[ `uname` == 'Darwin' ]]; then
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packages=("${packages[@]}" objconv)
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fi
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packages=("${packages[@]}" grub)
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# Binutils 2.26
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# Build with --with-sysroot for use in the future
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binutils_checkfile=${bindir}/${TARGET}-ld
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binutils_filename=binutils-2.26
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binutils_url=ftp://ftp.gnu.org/gnu/binutils/${binutils_filename}.tar.gz
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binutils_config="--target=${TARGET} \
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--with-sysroot \
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--disable-nls \
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--disable-werror"
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# GCC 6.1.0
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# Build with --without-headers for now - this will be replaced later
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gcc_checkfile=${bindir}/${TARGET}-gcc
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gcc_filename=gcc-6.1.0
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gcc_url=ftp://ftp.gnu.org/gnu/gcc/${gcc_filename}/${gcc_filename}.tar.gz
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gcc_config="--target=${TARGET} \
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--disable-nls \
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--enable-languages=c,c++ \
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--without-headers"
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gcc_make="all-gcc all-target-libgcc"
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gcc_install="install-gcc install-target-libgcc"
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# GDB 7.12
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gdb_checkfile=${bindir}/x86_64-elf-linux-gdb
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gdb_filename=gdb-7.12
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gdb_url=ftp://ftp.gnu.org/gnu/gdb/${gdb_filename}.tar.gz
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gdb_config="--target=x86_64-elf-linux \
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--disable-debug \
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--disable-dependency-tracking \
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--with-python=/usr"
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# objconv
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# This is required for building grub on OSX
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objconv_checkfile=${bindir}/objconv
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objconv_filename=objconv
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objconv_url=git://github.com/vertis/objconv.git
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function objconv_install() {
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# Download and build objconv
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local package=objconv
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pushd ${STASH}/${package} >/dev/null
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echo "Compiling"
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g++ -o ${TOOLCHAIN}/bin/objconv -O2 src/*.cpp \
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>/dev/null 2>>"${STASH}/error-${package}.log" || fail
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popd >/dev/null
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}
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# GRUB
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# The target x86_64-elf is close enough to what we want
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# Make sure to use the right target compiler chains
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grub_checkfile=${bindir}/grub-mkimage
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grub_filename=grub
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grub_url=git://git.savannah.gnu.org/grub.git
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grub_config="--target=x86_64-elf \
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--disable-werror \
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TARGET_CC=${TARGET}-gcc \
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TARGET_OBJCOPY=${TARGET}-objcopy \
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TARGET_STRIP=${TARGET}-strip \
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TARGET_NM=${TARGET}-nm \
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TARGET_RANLIB=${TARGET}-ranlib"
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grub_patchcmd="autogen.sh"
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function checkall() {
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for package in "${packages[@]}"
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do
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check ${package} || return 1
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done
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return 0
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}
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function main() {
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# If called with -c the script will check if a rebuild is necessary
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while getopts "c" OPTION
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do
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case ${OPTION} in
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c)
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checkall
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exit $?
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;;
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esac
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done
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print_info "Preparing toolchain"
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mkdir -p "${STASH}"
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PATH=${TOOLCHAIN}/bin:${PATH}
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for package in "${packages[@]}"
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do
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build_package ${package} || return 1
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done
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}
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main "${@}"
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36
util/helpers.sh
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36
util/helpers.sh
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#!/usr/bin/env bash
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function print_info() {
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echo -e "[\\033[36mINFO\\033[0m] $@"
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}
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function print_ok() {
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echo -e "[\\033[32mOK\\033[0m] $@"
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}
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function print_warning() {
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echo -e "[\\033[33mWARNING\\033[0m] $@"
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}
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function print_error() {
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echo -e "[\\033[31mERROR\\033[0m] $@"
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}
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function die() {
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print_error $@
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exit 1
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}
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function check_toolchain() {
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if [[ -z ${MITTOS64+x} ]]; then
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die "TOOLCHAIN is not set. Please source activate"
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exit 1
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fi
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}
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check_toolchain
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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# Test output functions
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print_info "This is an information message"
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print_ok "This is OK"
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print_warning "Be careful"
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print_error "Something bad happened"
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fi
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120
util/toolchain_helpers.sh
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#!/usr/bin/env bash
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. util/helpers.sh
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# check_toolchain
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readonly STASH=${TOOLCHAIN}/stash
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readonly PREFIX=${TOOLCHAIN}
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function fail() {
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print_error "Something went wrong"
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print_info "You may be able to find some information about what in ${STASH}/error-PACKAGE"
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die "Building toolchain failed"
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}
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function download() {
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# download url
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# Downloads the file at url unless cached
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# Return true if a file was downloaded
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local url=$1
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pushd "${STASH}" >/dev/null
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if [[ ${url} == git* ]]; then
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local filename=$(basename "${url}" .git)
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if [[ ! -d ${filename} ]]; then
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echo "Cloning" "${filename}"
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/usr/bin/env git clone --depth 1 "${url}" \
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>/dev/null 2>&1 || fail
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print_ok "Clone complete"
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return 0
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else
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print_ok "Using cached ${filename}"
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return 1
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fi
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else
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local filename=$(basename "${url}")
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if [[ ! -f ${filename} ]]; then
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echo "Downloading" "${filename}"
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/usr/bin/env curl -# -O "${url}" || fail
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/usr/bin/env tar -xf "${filename}" || fail
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print_ok "Download complete"
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return 0
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else
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print_ok "Using cached" "${filename}"
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return 1
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fi
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fi
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popd >/dev/null
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}
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function check() {
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# check package
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# Check if a package is installed
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# Returns true if installed
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local package=$1
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local file=${package}_checkfile
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if [[ -f ${!file} ]]; then
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return 0
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fi
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return 1
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}
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function config_make_install() {
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local package=$1
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local filename=${package}_filename
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local config=${package}_config
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local make=${package}_make
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local install=${package}_install
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mkdir -p "${STASH}/build-${package}"
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pushd "${STASH}/build-${package}" >/dev/null || fail
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rm -rf ./*
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echo "Configuring"
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../${!filename}/configure \
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--prefix=${PREFIX} \
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${!config-} \
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>/dev/null 2>>"${STASH}/error-${package}.log" || fail
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echo "Building"
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make --jobs=100 ${!make-all} \
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>/dev/null 2>>"${STASH}/error-${package}.log" || fail
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echo "Installing"
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make ${!install-install} \
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>/dev/null 2>>"${STASH}/error-${package}.log" || fail
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popd >/dev/null
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}
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function build_package() {
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local package=$1
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local filename=${package}_filename
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local url=${package}_url
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local patch=${package}_patchcmd
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if check ${package}; then
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print_ok "Package ${package} already built"
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return 0
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fi
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print_info "Building ${package}"
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echo "Downloading"
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if download ${!url}; then
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pushd "${STASH}/${!filename}" >/dev/null || fail
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echo "Applying patches / preparing to build"
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eval ${!patch}
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popd >/dev/null
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fi
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echo "Building and installing"
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if type -t "${package}_install" >/dev/null; then
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eval "${package}_install"
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else
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config_make_install ${package}
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fi
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print_ok "Build complete"
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}
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