| #!/usr/bin/env python |
| |
| # Copyright (C) 2014 by Thomas Petazzoni <thomas.petazzoni@free-electrons.com> |
| # |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| # General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program; if not, write to the Free Software |
| # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| |
| # This script generates a random configuration for testing Buildroot. |
| |
| from __future__ import print_function |
| |
| import contextlib |
| import csv |
| import os |
| from random import randint |
| import subprocess |
| import sys |
| from distutils.version import StrictVersion |
| import platform |
| |
| if sys.hexversion >= 0x3000000: |
| import urllib.request as _urllib |
| else: |
| import urllib2 as _urllib |
| |
| |
| def urlopen_closing(uri): |
| return contextlib.closing(_urllib.urlopen(uri)) |
| |
| |
| if sys.hexversion >= 0x3000000: |
| def decode_byte_list(bl): |
| return [b.decode() for b in bl] |
| else: |
| def decode_byte_list(e): |
| return e |
| |
| |
| class SystemInfo: |
| DEFAULT_NEEDED_PROGS = ["make", "git", "gcc", "timeout"] |
| DEFAULT_OPTIONAL_PROGS = ["bzr", "java", "javac", "jar", "diffoscope"] |
| |
| def __init__(self): |
| self.needed_progs = list(self.__class__.DEFAULT_NEEDED_PROGS) |
| self.optional_progs = list(self.__class__.DEFAULT_OPTIONAL_PROGS) |
| self.progs = {} |
| |
| def find_prog(self, name, flags=os.X_OK, env=os.environ): |
| if not name or name[0] == os.sep: |
| raise ValueError(name) |
| |
| prog_path = env.get("PATH", None) |
| # for windows compatibility, we'd need to take PATHEXT into account |
| |
| if prog_path: |
| for prog_dir in filter(None, prog_path.split(os.pathsep)): |
| # os.join() not necessary: non-empty prog_dir |
| # and name[0] != os.sep |
| prog = prog_dir + os.sep + name |
| if os.access(prog, flags): |
| return prog |
| # -- |
| return None |
| |
| def has(self, prog): |
| """Checks whether a program is available. |
| Lazily evaluates missing entries. |
| |
| Returns: None if prog not found, else path to the program [evaluates |
| to True] |
| """ |
| try: |
| return self.progs[prog] |
| except KeyError: |
| pass |
| |
| have_it = self.find_prog(prog) |
| # java[c] needs special care |
| if have_it and prog in ('java', 'javac'): |
| with open(os.devnull, "w") as devnull: |
| if subprocess.call("%s -version | grep gcj" % prog, |
| shell=True, |
| stdout=devnull, stderr=devnull) != 1: |
| have_it = False |
| # -- |
| self.progs[prog] = have_it |
| return have_it |
| |
| def check_requirements(self): |
| """Checks program dependencies. |
| |
| Returns: True if all mandatory programs are present, else False. |
| """ |
| do_check_has_prog = self.has |
| |
| missing_requirements = False |
| for prog in self.needed_progs: |
| if not do_check_has_prog(prog): |
| print("ERROR: your system lacks the '%s' program" % prog) |
| missing_requirements = True |
| |
| # check optional programs here, |
| # else they'd get checked by each worker instance |
| for prog in self.optional_progs: |
| do_check_has_prog(prog) |
| |
| return not missing_requirements |
| |
| |
| def get_toolchain_configs(toolchains_csv, buildrootdir): |
| """Fetch and return the possible toolchain configurations |
| |
| This function returns an array of toolchain configurations. Each |
| toolchain configuration is itself an array of lines of the defconfig. |
| """ |
| |
| with open(toolchains_csv) as r: |
| # filter empty lines and comments |
| lines = [t for t in r.readlines() if len(t.strip()) > 0 and t[0] != '#'] |
| toolchains = decode_byte_list(lines) |
| configs = [] |
| |
| (_, _, _, _, hostarch) = os.uname() |
| # ~2015 distros report x86 when on a 32bit install |
| if hostarch == 'i686' or hostarch == 'i386' or hostarch == 'x86': |
| hostarch = 'x86' |
| |
| for row in csv.reader(toolchains): |
| config = {} |
| configfile = row[0] |
| config_hostarch = row[1] |
| keep = False |
| |
| # Keep all toolchain configs that work regardless of the host |
| # architecture |
| if config_hostarch == "any": |
| keep = True |
| |
| # Keep all toolchain configs that can work on the current host |
| # architecture |
| if hostarch == config_hostarch: |
| keep = True |
| |
| # Assume that x86 32 bits toolchains work on x86_64 build |
| # machines |
| if hostarch == 'x86_64' and config_hostarch == "x86": |
| keep = True |
| |
| if not keep: |
| continue |
| |
| if not os.path.isabs(configfile): |
| configfile = os.path.join(buildrootdir, configfile) |
| |
| with open(configfile) as r: |
| config = r.readlines() |
| configs.append(config) |
| return configs |
| |
| |
| def is_toolchain_usable(configfile, config): |
| """Check if the toolchain is actually usable.""" |
| |
| with open(configfile) as configf: |
| configlines = configf.readlines() |
| |
| # Check that the toolchain configuration is still present |
| for toolchainline in config: |
| if toolchainline not in configlines: |
| print("WARN: toolchain can't be used", file=sys.stderr) |
| print(" Missing: %s" % toolchainline.strip(), file=sys.stderr) |
| return False |
| |
| # The latest Linaro toolchains on x86-64 hosts requires glibc |
| # 2.14+ on the host. |
| if platform.machine() == 'x86_64': |
| if 'BR2_TOOLCHAIN_EXTERNAL_LINARO_ARM=y\n' in configlines or \ |
| 'BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64=y\n' in configlines or \ |
| 'BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64_BE=y\n' in configlines or \ |
| 'BR2_TOOLCHAIN_EXTERNAL_LINARO_ARMEB=y\n' in configlines: |
| ldd_version_output = subprocess.check_output(['ldd', '--version']) |
| glibc_version = ldd_version_output.splitlines()[0].split()[-1] |
| if StrictVersion('2.14') > StrictVersion(glibc_version): |
| print("WARN: ignoring the Linaro ARM toolchains because too old host glibc", file=sys.stderr) |
| return False |
| |
| return True |
| |
| |
| def fixup_config(sysinfo, configfile): |
| """Finalize the configuration and reject any problematic combinations |
| |
| This function returns 'True' when the configuration has been |
| accepted, and 'False' when the configuration has not been accepted because |
| it is known to fail (in which case another random configuration will be |
| generated). |
| """ |
| |
| with open(configfile) as configf: |
| configlines = configf.readlines() |
| |
| BR2_TOOLCHAIN_EXTERNAL_URL = 'BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/' |
| |
| if "BR2_NEEDS_HOST_JAVA=y\n" in configlines and not sysinfo.has("java"): |
| return False |
| if "BR2_NEEDS_HOST_JAVAC=y\n" in configlines and not sysinfo.has("javac"): |
| return False |
| if "BR2_NEEDS_HOST_JAR=y\n" in configlines and not sysinfo.has("jar"): |
| return False |
| # python-nfc needs bzr |
| if 'BR2_PACKAGE_PYTHON_NFC=y\n' in configlines and not sysinfo.has("bzr"): |
| return False |
| # The ctng toolchain is affected by PR58854 |
| if 'BR2_PACKAGE_LTTNG_TOOLS=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'armv5-ctng-linux-gnueabi.tar.xz"\n' in configlines: |
| return False |
| # The ctng toolchain tigger an assembler error with guile package when compiled with -Os (same issue as for CS ARM 2014.05-29) |
| if 'BR2_PACKAGE_GUILE=y\n' in configlines and \ |
| 'BR2_OPTIMIZE_S=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'armv5-ctng-linux-gnueabi.tar.xz"\n' in configlines: |
| return False |
| # The ctng toolchain is affected by PR58854 |
| if 'BR2_PACKAGE_LTTNG_TOOLS=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'armv6-ctng-linux-uclibcgnueabi.tar.xz"\n' in configlines: |
| return False |
| # The ctng toolchain is affected by PR58854 |
| if 'BR2_PACKAGE_LTTNG_TOOLS=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'armv7-ctng-linux-gnueabihf.tar.xz"\n' in configlines: |
| return False |
| # The ctng toolchain is affected by PR60155 |
| if 'BR2_PACKAGE_SDL=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'powerpc-ctng-linux-uclibc.tar.xz"\n' in configlines: |
| return False |
| # The ctng toolchain is affected by PR60155 |
| if 'BR2_PACKAGE_LIBMPEG2=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'powerpc-ctng-linux-uclibc.tar.xz"\n' in configlines: |
| return False |
| # This MIPS toolchain uses eglibc-2.18 which lacks SYS_getdents64 |
| if 'BR2_PACKAGE_STRONGSWAN=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'mips64el-ctng_n64-linux-gnu.tar.xz"\n' in configlines: |
| return False |
| # This MIPS toolchain uses eglibc-2.18 which lacks SYS_getdents64 |
| if 'BR2_PACKAGE_PYTHON3=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'mips64el-ctng_n64-linux-gnu.tar.xz"\n' in configlines: |
| return False |
| # libffi not available on sh2a and ARMv7-M, but propagating libffi |
| # arch dependencies in Buildroot is really too much work, so we |
| # handle this here. |
| if 'BR2_sh2a=y\n' in configlines and \ |
| 'BR2_PACKAGE_LIBFFI=y\n' in configlines: |
| return False |
| if 'BR2_ARM_CPU_ARMV7M=y\n' in configlines and \ |
| 'BR2_PACKAGE_LIBFFI=y\n' in configlines: |
| return False |
| if 'BR2_nds32=y\n' in configlines and \ |
| 'BR2_PACKAGE_LIBFFI=y\n' in configlines: |
| return False |
| if 'BR2_PACKAGE_SUNXI_BOARDS=y\n' in configlines: |
| configlines.remove('BR2_PACKAGE_SUNXI_BOARDS_FEX_FILE=""\n') |
| configlines.append('BR2_PACKAGE_SUNXI_BOARDS_FEX_FILE="a10/hackberry.fex"\n') |
| # This MIPS uClibc toolchain fails to build the gdb package |
| if 'BR2_PACKAGE_GDB=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'mipsel-ctng-linux-uclibc.tar.xz"\n' in configlines: |
| return False |
| # This MIPS uClibc toolchain fails to build the rt-tests package |
| if 'BR2_PACKAGE_RT_TESTS=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'mipsel-ctng-linux-uclibc.tar.xz"\n' in configlines: |
| return False |
| # This MIPS uClibc toolchain fails to build the civetweb package |
| if 'BR2_PACKAGE_CIVETWEB=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'mipsel-ctng-linux-uclibc.tar.xz"\n' in configlines: |
| return False |
| # This MIPS ctng toolchain fails to build the python3 package |
| if 'BR2_PACKAGE_PYTHON3=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'mips64el-ctng_n64-linux-gnu.tar.xz"\n' in configlines: |
| return False |
| # This MIPS uClibc toolchain fails to build the strace package |
| if 'BR2_PACKAGE_STRACE=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'mipsel-ctng-linux-uclibc.tar.xz"\n' in configlines: |
| return False |
| # This MIPS uClibc toolchain fails to build the cdrkit package |
| if 'BR2_PACKAGE_CDRKIT=y\n' in configlines and \ |
| 'BR2_STATIC_LIBS=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'mipsel-ctng-linux-uclibc.tar.xz"\n' in configlines: |
| return False |
| # uClibc vfork static linking issue |
| if 'BR2_PACKAGE_ALSA_LIB=y\n' in configlines and \ |
| 'BR2_STATIC_LIBS=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'i486-ctng-linux-uclibc.tar.xz"\n' in configlines: |
| return False |
| # This MIPS uClibc toolchain fails to build the weston package |
| if 'BR2_PACKAGE_WESTON=y\n' in configlines and \ |
| BR2_TOOLCHAIN_EXTERNAL_URL + 'mipsel-ctng-linux-uclibc.tar.xz"\n' in configlines: |
| return False |
| # The cs nios2 2017.02 toolchain is affected by binutils PR19405 |
| if 'BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII=y\n' in configlines and \ |
| 'BR2_PACKAGE_BOOST=y\n' in configlines: |
| return False |
| # The cs nios2 2017.02 toolchain is affected by binutils PR19405 |
| if 'BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII=y\n' in configlines and \ |
| 'BR2_PACKAGE_QT5BASE_GUI=y\n' in configlines: |
| return False |
| # The cs nios2 2017.02 toolchain is affected by binutils PR19405 |
| if 'BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII=y\n' in configlines and \ |
| 'BR2_PACKAGE_FLANN=y\n' in configlines: |
| return False |
| |
| with open(configfile, "w+") as configf: |
| configf.writelines(configlines) |
| |
| return True |
| |
| |
| def gen_config(args): |
| """Generate a new random configuration |
| |
| This function generates the configuration, by choosing a random |
| toolchain configuration and then generating a random selection of |
| packages. |
| """ |
| |
| sysinfo = SystemInfo() |
| |
| # Select a random toolchain configuration |
| configs = get_toolchain_configs(args.toolchains_csv, args.buildrootdir) |
| |
| i = randint(0, len(configs) - 1) |
| toolchainconfig = configs[i] |
| |
| configlines = list(toolchainconfig) |
| |
| # Combine with the minimal configuration |
| minimalconfigfile = os.path.join(args.buildrootdir, |
| 'support/config-fragments/minimal.config') |
| with open(minimalconfigfile) as minimalf: |
| configlines += minimalf.readlines() |
| |
| # Allow hosts with old certificates to download over https |
| configlines.append("BR2_WGET=\"wget --passive-ftp -nd -t 3 --no-check-certificate\"\n") |
| |
| # Amend the configuration with a few things. |
| if randint(0, 20) == 0: |
| configlines.append("BR2_ENABLE_DEBUG=y\n") |
| if randint(0, 1) == 0: |
| configlines.append("BR2_INIT_BUSYBOX=y\n") |
| elif randint(0, 15) == 0: |
| configlines.append("BR2_INIT_SYSTEMD=y\n") |
| elif randint(0, 10) == 0: |
| configlines.append("BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y\n") |
| if randint(0, 20) == 0: |
| configlines.append("BR2_STATIC_LIBS=y\n") |
| if randint(0, 20) == 0: |
| configlines.append("BR2_PACKAGE_PYTHON_PY_ONLY=y\n") |
| if randint(0, 5) == 0: |
| configlines.append("BR2_OPTIMIZE_2=y\n") |
| if randint(0, 4) == 0: |
| configlines.append("BR2_SYSTEM_ENABLE_NLS=y\n") |
| |
| # Randomly enable BR2_REPRODUCIBLE 10% of times |
| # also enable tar filesystem images for testing |
| if sysinfo.has("diffoscope") and randint(0, 10) == 0: |
| configlines.append("BR2_REPRODUCIBLE=y\n") |
| configlines.append("BR2_TARGET_ROOTFS_TAR=y\n") |
| |
| # Write out the configuration file |
| if not os.path.exists(args.outputdir): |
| os.makedirs(args.outputdir) |
| if args.outputdir == os.path.abspath(os.path.join(args.buildrootdir, "output")): |
| configfile = os.path.join(args.buildrootdir, ".config") |
| else: |
| configfile = os.path.join(args.outputdir, ".config") |
| with open(configfile, "w+") as configf: |
| configf.writelines(configlines) |
| |
| subprocess.check_call(["make", "O=%s" % args.outputdir, "-C", args.buildrootdir, |
| "olddefconfig"]) |
| |
| if not is_toolchain_usable(configfile, toolchainconfig): |
| return 2 |
| |
| # Now, generate the random selection of packages, and fixup |
| # things if needed. |
| # Safe-guard, in case we can not quickly come to a valid |
| # configuration: allow at most 100 (arbitrary) iterations. |
| bounded_loop = 100 |
| while True: |
| if bounded_loop == 0: |
| print("ERROR: cannot generate random configuration after 100 iterations", |
| file=sys.stderr) |
| return 1 |
| bounded_loop -= 1 |
| subprocess.check_call(["make", "O=%s" % args.outputdir, "-C", args.buildrootdir, |
| "KCONFIG_PROBABILITY=%d" % randint(1, 30), |
| "randpackageconfig"]) |
| |
| if fixup_config(sysinfo, configfile): |
| break |
| |
| subprocess.check_call(["make", "O=%s" % args.outputdir, "-C", args.buildrootdir, |
| "olddefconfig"]) |
| |
| subprocess.check_call(["make", "O=%s" % args.outputdir, "-C", args.buildrootdir, |
| "savedefconfig"]) |
| |
| return subprocess.call(["make", "O=%s" % args.outputdir, "-C", args.buildrootdir, |
| "dependencies"]) |
| |
| |
| if __name__ == '__main__': |
| import argparse |
| parser = argparse.ArgumentParser(description="Generate a random configuration") |
| parser.add_argument("--outputdir", "-o", |
| help="Output directory (relative to current directory)", |
| type=str, default='output') |
| parser.add_argument("--buildrootdir", "-b", |
| help="Buildroot directory (relative to current directory)", |
| type=str, default='.') |
| parser.add_argument("--toolchains-csv", |
| help="Path of the toolchain configuration file", |
| type=str, |
| default="support/config-fragments/autobuild/toolchain-configs.csv") |
| args = parser.parse_args() |
| |
| # We need the absolute path to use with O=, because the relative |
| # path to the output directory here is not relative to the |
| # Buildroot sources, but to the current directory. |
| args.outputdir = os.path.abspath(args.outputdir) |
| |
| try: |
| ret = gen_config(args) |
| except Exception as e: |
| print(str(e), file=sys.stderr) |
| parser.exit(1) |
| parser.exit(ret) |
