build: add setup toolchain script

tools/setup-toolchain

@@ -0,0 +1,264 @@
+#!/bin/bash
+# Copyright © 2023, d0p1
+#
+# This file is part of Fukurō.
+#
+# This software is governed by the CeCILL license under French law and
+# abiding by the rules of distribution of free software.  You can  use, 
+# modify and/ or redistribute the software under the terms of the CeCILL
+# license as circulated by CEA, CNRS and INRIA at the following URL
+# "http://cecill.info". 
+# 
+# As a counterpart to the access to the source code and  rights to copy,
+# modify and redistribute granted by the license, users are provided only
+# with a limited warranty  and the software's author,  the holder of the
+# economic rights,  and the successive licensors  have only  limited
+# liability. 
+#
+# In this respect, the user's attention is drawn to the risks associated
+# with loading,  using,  modifying and/or developing or reproducing the
+# software by the user in light of its specific status of free software,
+# that may mean  that it is complicated to manipulate,  and  that  also
+# therefore means  that it is reserved for developers  and  experienced
+# professionals having in-depth computer knowledge. Users are therefore
+# encouraged to load and test the software's suitability as regards their
+# requirements in conditions enabling the security of their systems and/or 
+# data to be ensured and,  more generally, to use and operate it in the 
+# same conditions as regards security. 
+#
+# The fact that you are presently reading this means that you have had
+# knowledge of the CeCILL license and that you accept its terms.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+BINUTILS_VERSION=2.41
+BINUTILS_ARCHIVE="binutils-${BINUTILS_VERSION}.tar.gz"
+BINUTILS_URL="https://ftp.gnu.org/gnu/binutils/${BINUTILS_ARCHIVE}"
+BINUTILS_SHA256="48d00a8dc73aa7d2394a7dc069b96191d95e8de8f0da6dc91da5cce655c20e45"
+
+GCC_VERSION=13.2.0
+GCC_ARCHIVE="gcc-${GCC_VERSION}.tar.gz"
+GCC_URL="https://ftp.gnu.org/gnu/gcc/gcc-${GCC_VERSION}/${GCC_ARCHIVE}"
+GCC_SHA256="8cb4be3796651976f94b9356fa08d833524f62420d6292c5033a9a26af315078"
+
+cerror="\033[31m"
+cwarn="\033[33m"
+cok="\033[32m"
+creset="\033[0m"
+
+target_triple=riscv-elf
+install_prefix="${HOME}/.toolchain"
+do_sha256_check=yes
+do_force=no
+do_update=no
+do_build_binutils=no
+do_build_gcc=no
+
+warn() {
+	printf "[${cwarn}WARN${creset}] %s\n" "$1"
+}
+
+fatal() {
+	printf "[${cerror}FATAL${creset}] %s\n" "$1"
+	exit 255
+}
+
+finish() {
+	if [ -d "${install_prefix}/build" ]; then
+		(
+			cd "${install_prefix}/build"
+			rm -rf "binutils-${BINUTILS_VERSION}"
+			rm -rf "gcc-${GCC_VERSION}"
+		)
+	fi
+}
+trap finish EXIT ERR
+
+setup() {
+	wget_exe=`which wget`
+	curl_exe=`which curl`
+	sha256sum_exe=`which sha256sum`
+
+	if [ x"$sha256sum_exe" = "x" ]; then
+		warn "sha256sum not found; sha256 check will be skipped"
+		do_sha256_check=no
+	fi
+}
+
+verify() {
+	printf "checking %s sha256 hash... " "$1"
+	if [ x"$do_sha256_check" = "xyes" ]; then
+		sha256sum -c <(printf "%s %s\n" "$2" "$1") > /dev/null && printf "${cok}OK${creset}\n" || (printf "${cerror}FAILED${creset}\n" && false)
+	else
+		printf "${cwarn}SKIP${creset}\n"
+	fi
+}
+
+check_current_binutils_version() {
+	printf "checking binutils version... "
+	if "${target_triple}-ld" --version | grep "${BINUTILS_VERSION}" >/dev/null; then
+		printf "${cok}OK${creset}\n"
+	else
+		printf "${cwarn}MISSMATCH${creset}\n"
+		if [ x"$do_update" = "xyes" ]; then
+			do_build_binutils=yes
+		fi
+	fi
+}
+
+check_current_binutils() {
+	printf "checking for %s-ld... " "${target_triple}"
+	if command -v "${target_triple}-ld" > /dev/null; then
+		printf "${cok}FOUND${creset}\n"
+
+		check_current_binutils_version
+	else
+		printf "${cerror}NO${creset}\n"
+		do_build_binutils=yes
+	fi
+}
+
+check_current_gcc_version() {
+	printf "checking gcc version... "
+	if "${target_triple}-gcc" --version | grep "${GCC_VERSION}" >/dev/null; then
+		printf "${cok}OK${creset}\n"
+	else
+		printf "${cwarn}MISSMATCH${creset}\n"
+		if [ x"$do_update" = "xyes" ]; then
+			do_build_gcc=yes
+		fi
+	fi
+}
+
+check_current_gcc() {
+	printf "checking for %s-gcc... " "${target_triple}"
+	if command -v "${target_triple}-gcc" > /dev/null; then
+		printf "${cok}FOUND${creset}\n"
+
+		check_current_gcc_version
+	else
+		printf "${cerror}NO${creset}\n"
+		do_build_gcc=yes
+	fi
+}
+
+download() {
+	for i in 1 2 3; do
+		if [ ! -f "$1" ]; then
+			$wget_exe -O "$1" "$2"
+		fi
+
+		if verify "$1" "$3"; then
+			break
+		else
+			rm "$1"
+		fi
+	done
+
+	test -f "$1"
+}
+
+build_binutils() {
+	(
+		cd "${install_prefix}/build"
+		download "${BINUTILS_ARCHIVE}" "${BINUTILS_URL}" "${BINUTILS_SHA256}"
+
+		printf "extract %s\n" "${BINUTILS_ARCHIVE}"
+		tar -xf "${BINUTILS_ARCHIVE}"
+		(
+			cd "binutils-${BINUTILS_VERSION}"
+			mkdir -p build
+			(
+				cd build
+				../configure --target="${target_triple}" --prefix="${install_prefix}"  --with-sysroot --disable-nls --disable-werror 
+				make -j $(nproc)
+				make install
+			)
+		)
+	)
+}
+
+build_gcc() {
+	(
+		cd "${install_prefix}/build"
+		download "${GCC_ARCHIVE}" "${GCC_URL}" "${GCC_SHA256}"
+
+		printf "extract %s\n" "${GCC_ARCHIVE}"
+		tar -xf "${GCC_ARCHIVE}"
+		(
+			cd "gcc-${GCC_VERSION}"
+			mkdir -p build
+			(
+				cd build
+				../configure --target="${target_triple}" --prefix="${install_prefix}" --with-sysroot --disable-nls --enable-languages=c --with-newlib
+				make -j $(nproc) all-gcc
+				make -j $(nproc) all-target-libgcc
+				make -j $(nproc) install-gcc
+				make -j $(nproc) install-target-libgcc
+			)
+		)
+	)
+}
+
+usage() {
+	cat <<EOF
+Usage: $0 [-t <triple>][-p <prefix>][-f][-h]
+
+	-t <triple>  toolchain triple (default: $target_triple)
+	-p <prefix>  install prefix path (default: $install_prefix)
+	-f           force rebuild (eg: ignore cache when CI build)
+	-u           update if toolchain version missmatch (default: no)
+	-h           display this help and exit
+
+Report bugs to: <https://github.com/d0p1s4m4/Fukuro>
+EOF
+
+	exit 0
+}
+
+main() {
+	setup
+
+	while getopts 't:p:fh' opt; do
+		case "$opt" in
+			t)
+				target_triple="${OPTARG}"
+				;;
+			p)
+				install_target="${OPTARG%%/}"
+				;;
+			f)
+				do_force=yes
+				;;
+			u)
+				do_update=yes
+				;;
+			?|h)
+				usage "${@}"
+				;;
+		esac
+	done
+
+	PATH="${install_prefix}/bin:${PATH}"
+	mkdir -p "${install_prefix}/build"
+
+	if [ x"$do_force" = "xyes" ]; then
+		do_build_binutils=yes
+		do_build_gcc=yes
+	else
+		check_current_binutils
+		check_current_gcc
+	fi
+
+	if [ x"$do_build_binutils" = "xyes" ]; then
+		build_binutils
+	fi
+
+	if [ x"$do_build_gcc" = "xyes" ]; then
+		build_gcc
+	fi
+}
+
+main "${@}"