elna/rakelib/cross.rake

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require 'pathname'
require 'uri'
require 'net/http'
require 'rake/clean'
require 'open3'
require 'etc'
GCC_VERSION = "14.2.0"
BINUTILS_VERSION = '2.43.1'
GLIBC_VERSION = '2.40'
KERNEL_VERSION = '5.15.166'
TMP = Pathname.new('./build')
CLEAN.include TMP
class BuildTarget
attr_accessor(:build, :gcc, :target, :tmp)
def gxx
@gcc.gsub 'c', '+'
end
def sysroot
tmp + 'sysroot'
end
def rootfs
tmp + 'rootfs'
end
def tools
tmp + 'tools'
end
end
def gcc_verbose(gcc_binary)
read, write = IO.pipe
sh({'LANG' => 'C'}, gcc_binary, '--verbose', err: write)
write.close
output = read.read
read.close
output
end
def find_build_target(gcc_version, task)
gcc_binary = 'gcc'
output = gcc_verbose gcc_binary
if output.start_with? 'Apple clang'
gcc_binary = "gcc-#{gcc_version.split('.').first}"
output = gcc_verbose gcc_binary
end
result = output
.lines
.each_with_object(BuildTarget.new) do |line, accumulator|
if line.start_with? 'Target: '
accumulator.build = line.split(' ').last.strip
elsif line.start_with? 'COLLECT_GCC'
accumulator.gcc = line.split('=').last.strip
end
end
result.tmp = TMP
task.with_defaults target: 'riscv32-unknown-linux-gnu'
result.target = task[:target]
result
end
def download_and_unarchive(url, target)
case File.extname url.path
when '.bz2'
archive_type = '-j'
root_directory = File.basename url.path, '.tar.bz2'
when '.xz'
archive_type = '-J'
root_directory = File.basename url.path, '.tar.xz'
else
raise "Unsupported archive type #{url.path}."
end
Net::HTTP.start(url.host, url.port, use_ssl: url.scheme == 'https') do |http|
request = Net::HTTP::Get.new url.request_uri
http.request request do |response|
case response
when Net::HTTPRedirection
download_and_unarchive URI.parse(response['location'])
when Net::HTTPSuccess
Open3.popen2 'tar', '-C', target.to_path, archive_type, '-xv' do |stdin, stdout, wait_thread|
stdout.close
response.read_body do |chunk|
stdin.write chunk
end
end
else
response.error!
end
end
end
target + root_directory
end
namespace :cross do
desc 'Build cross binutils'
task :binutils, [:target] do |_, args|
options = find_build_target GCC_VERSION, args
options.tools.mkpath
source_directory = download_and_unarchive(
URI.parse("https://ftp.gnu.org/gnu/binutils/binutils-#{BINUTILS_VERSION}.tar.xz"),
options.tools)
cwd = source_directory.dirname + 'build-binutils'
cwd.mkpath
options.rootfs.mkpath
env = {
'CC' => options.gcc,
'CXX' => options.gxx
}
configure_options = [
"--prefix=#{options.rootfs.realpath}",
"--target=#{options.target}",
'--disable-nls',
'--enable-gprofng=no',
'--disable-werror',
'--enable-default-hash-style=gnu',
'--disable-libquadmath'
]
configure = source_directory.relative_path_from(cwd) + 'configure'
sh env, configure.to_path, *configure_options, chdir: cwd.to_path
sh env, 'make', '-j', Etc.nprocessors.to_s, chdir: cwd.to_path
sh env, 'make', 'install', chdir: cwd.to_path
end
desc 'Build stage 1 GCC'
task :gcc1, [:target] do |_, args|
options = find_build_target GCC_VERSION, args
options.tools.mkpath
source_directory = download_and_unarchive(
URI.parse("https://gcc.gnu.org/pub/gcc/releases/gcc-#{GCC_VERSION}/gcc-#{GCC_VERSION}.tar.xz"),
options.tools)
cwd = source_directory.dirname + 'build-gcc'
cwd.mkpath
options.rootfs.mkpath
options.sysroot.mkpath
sh 'contrib/download_prerequisites', chdir: source_directory.to_path
configure_options = [
"--prefix=#{options.rootfs.realpath}",
"--with-sysroot=#{options.sysroot.realpath}",
'--enable-languages=c,c++',
'--disable-shared',
'--with-arch=rv32imafdc',
'--with-abi=ilp32d',
'--with-tune=rocket',
'--with-isa-spec=20191213',
'--disable-bootstrap',
'--disable-multilib',
'--disable-libmudflap',
'--disable-libssp',
'--disable-libquadmath',
'--disable-libsanitizer',
'--disable-threads',
'--disable-libatomic',
'--disable-libgomp',
'--disable-libvtv',
'--disable-libstdcxx',
'--disable-nls',
'--with-newlib',
'--without-headers',
"--target=#{options.target}",
"--build=#{options.build}",
"--host=#{options.build}"
]
flags = '-O2 -fPIC'
env = {
'CC' => options.gcc,
'CXX' => options.gxx,
'CFLAGS' => flags,
'CXXFLAGS' => flags,
'PATH' => "#{options.rootfs.realpath + 'bin'}:#{ENV['PATH']}"
}
configure = source_directory.relative_path_from(cwd) + 'configure'
sh env, configure.to_path, *configure_options, chdir: cwd.to_path
sh env, 'make', '-j', Etc.nprocessors.to_s, chdir: cwd.to_path
sh env, 'make', 'install', chdir: cwd.to_path
end
desc 'Copy glibc headers'
task :headers, [:target] do |_, args|
options = find_build_target GCC_VERSION, args
options.tools.mkpath
source_directory = download_and_unarchive(
URI.parse("https://ftp.gnu.org/gnu/glibc/glibc-#{GLIBC_VERSION}.tar.xz"),
options.tools)
include_directory = options.tools + 'include'
include_directory.mkpath
cp (source_directory + 'elf/elf.h'), (include_directory + 'elf.h')
end
desc 'Build linux kernel'
task :kernel, [:target] do |_, args|
options = find_build_target GCC_VERSION, args
options.tools.mkpath
cwd = download_and_unarchive(
URI.parse("https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-#{KERNEL_VERSION}.tar.xz"),
options.tools)
env = {
'CROSS_COMPILE' => "#{options.target}-",
'ARCH' => 'riscv',
'PATH' => "#{options.rootfs.realpath + 'bin'}:#{ENV['PATH']}",
'HOSTCFLAGS' => "-D_UUID_T -D__GETHOSTUUID_H -I#{options.tools.realpath + 'include'}"
}
sh env, 'make', 'rv32_defconfig', chdir: cwd.to_path
sh env, 'make', '-j', Etc.nprocessors.to_s, chdir: cwd.to_path
sh env, 'make', 'headers', chdir: cwd.to_path
user_directory = options.sysroot + 'usr'
user_directory.mkpath
cp_r (cwd + 'usr/include'), (user_directory + 'include')
end
desc 'Build glibc'
task :glibc, [:target] do |_, args|
options = find_build_target GCC_VERSION, args
source_directory = options.tools + "glibc-#{GLIBC_VERSION}"
configure_options = [
'--prefix=/usr',
"--host=#{options.target}",
"--target=#{options.target}",
"--build=#{options.build}",
"--enable-kernel=#{KERNEL_VERSION}",
"--with-headers=#{options.sysroot.realpath + 'usr/include'}",
'--disable-nscd',
'--disable-libquadmath',
'--disable-libitm',
'--disable-werror',
'libc_cv_forced_unwind=yes'
]
bin = options.rootfs.realpath + 'bin'
env = {
'PATH' => "#{bin}:#{ENV['PATH']}",
'MAKE' => 'make' # Otherwise it uses gnumake which can be different and too old.
}
cwd = source_directory.dirname + 'build-glibc'
cwd.mkpath
configure = source_directory.relative_path_from(cwd) +'./configure'
sh env, configure.to_path, *configure_options, chdir: cwd.to_path
sh env, 'make', '-j', Etc.nprocessors.to_s, chdir: cwd.to_path
sh env, 'make', "install_root=#{options.sysroot.realpath}", 'install', chdir: cwd.to_path
end
desc 'Build stage 2 GCC'
task :gcc2, [:target] do |_, args|
options = find_build_target GCC_VERSION, args
source_directory = options.tools + "gcc-#{GCC_VERSION}"
cwd = options.tools + 'build-gcc'
rm_rf cwd
cwd.mkpath
configure_options = [
"--prefix=#{options.rootfs.realpath}",
"--with-sysroot=#{options.sysroot.realpath}",
'--enable-languages=c,c++,lto',
'--enable-lto',
'--enable-shared',
'--with-arch=rv32imafdc',
'--with-abi=ilp32d',
'--with-tune=rocket',
'--with-isa-spec=20191213',
'--disable-bootstrap',
'--disable-multilib',
'--enable-checking=release',
'--disable-libssp',
'--disable-libquadmath',
'--enable-threads=posix',
'--with-default-libstdcxx-abi=new',
'--disable-nls',
"--target=#{options.target}",
"--build=#{options.build}",
"--host=#{options.build}"
]
flags = '-O2 -fPIC'
env = {
'CFLAGS' => flags,
'CXXFLAGS' => flags,
'PATH' => "#{options.rootfs.realpath + 'bin'}:#{ENV['PATH']}"
}
configure = source_directory.relative_path_from(cwd) + 'configure'
sh env, configure.to_path, *configure_options, chdir: cwd.to_path
sh env, 'make', '-j', Etc.nprocessors.to_s, chdir: cwd.to_path
sh env, 'make', 'install', chdir: cwd.to_path
end
end
task cross: ['cross:binutils', 'cross:gcc1', 'cross:headers', 'cross:kernel', 'cross:glibc', 'cross:gcc2'] do
end