buildroot/utils/genrandconfig
Arnout Vandecappelle (Essensium/Mind) 29d5b79b73 utils/genrandconfig: check core-dependencies
When generating a random configuration, also check the host
dependencies for that configuration and error out if it fails.

This is mainly intended for the autobuilders, so they don't try to
build a configuration for which the necessary host packages are not
installed.

Instead of erroring out, we could also generate a different random
config. However:

- When called for the autobuilders, the autobuild-run script will
  anyway just attempt another build. The only difference is that a
  warning will be printed in this autobuild log now. This warning
  is in fact quite useful to hint that the autobuilder could benefit
  from intalling this additional host package.

- When called manually, the user may in fact want to install the
  missing host package and continue with the saved random config.

Fixes:

http://autobuild.buildroot.net/results/d7c/d7c12e873a71fef1e0b5e19cfad45024050614e1
http://autobuild.buildroot.net/results/a0a/a0a105c1ec2d0517112b02932a85831d4b597b9f
http://autobuild.buildroot.net/results/96c/96cc6cedc64c777e993671204809599a1498472a

and many others...

Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2018-02-08 22:20:08 +01:00

434 lines
18 KiB
Python
Executable file

#!/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"]
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_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(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).
"""
sysinfo = SystemInfo()
with open(configfile) as configf:
configlines = configf.readlines()
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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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_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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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="http://autobuild.buildroot.org/toolchains/tarballs/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_QT_GUI_MODULE=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
# or1k affected by binutils PR21464
if 'BR2_or1k=y\n' in configlines and \
'BR2_PACKAGE_QT_GUI_MODULE=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.
"""
# 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()
# 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")
# 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(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,
"core-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)