# -*- mode:python -*-
-# Copyright (c) 2013, 2015, 2016 ARM Limited
+# Copyright (c) 2013, 2015-2020 ARM Limited
# All rights reserved.
#
# The license below extends only to copyright in the software and shall
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#
-# Authors: Steve Reinhardt
-# Nathan Binkert
###################################################
#
#
# While in this directory ('gem5'), just type 'scons' to build the default
# configuration (see below), or type 'scons build/<CONFIG>/<binary>'
-# to build some other configuration (e.g., 'build/ALPHA/gem5.opt' for
+# to build some other configuration (e.g., 'build/X86/gem5.opt' for
# the optimized full-system version).
#
# You can build gem5 in a different directory as long as there is a
#
# The following two commands are equivalent. The '-u' option tells
# scons to search up the directory tree for this SConstruct file.
-# % cd <path-to-src>/gem5 ; scons build/ALPHA/gem5.debug
-# % cd <path-to-src>/gem5/build/ALPHA; scons -u gem5.debug
+# % cd <path-to-src>/gem5 ; scons build/X86/gem5.debug
+# % cd <path-to-src>/gem5/build/X86; scons -u gem5.debug
#
# The following two commands are equivalent and demonstrate building
# in a directory outside of the source tree. The '-C' option tells
# scons to chdir to the specified directory to find this SConstruct
# file.
-# % cd <path-to-src>/gem5 ; scons /local/foo/build/ALPHA/gem5.debug
-# % cd /local/foo/build/
ALPHA; scons -C <path-to-src>/gem5 gem5.debug
+# % cd <path-to-src>/gem5 ; scons /local/foo/build/X86/gem5.debug
+# % cd /local/foo/build/
X86; scons -C <path-to-src>/gem5 gem5.debug
#
# You can use 'scons -H' to print scons options. If you're in this
# 'gem5' directory (or use -u or -C to tell scons where to find this
#
###################################################
-# Check for recent-enough Python and SCons versions.
-try:
- # Really old versions of scons only take two options for the
- # function, so check once without the revision and once with the
- # revision, the first instance will fail for stuff other than
- # 0.98, and the second will fail for 0.98.0
- EnsureSConsVersion(0, 98)
- EnsureSConsVersion(0, 98, 1)
-except SystemExit, e:
- print """
-For more details, see:
- http://gem5.org/Dependencies
-"""
- raise
-
-# We ensure the python version early because because python-config
-# requires python 2.5
-try:
- EnsurePythonVersion(2, 5)
-except SystemExit, e:
- print """
-You can use a non-default installation of the Python interpreter by
-rearranging your PATH so that scons finds the non-default 'python' and
-'python-config' first.
-
-For more details, see:
- http://gem5.org/wiki/index.php/Using_a_non-default_Python_installation
-"""
- raise
+from __future__ import print_function
# Global Python includes
+import atexit
import itertools
import os
import re
from os.path import abspath, basename, dirname, expanduser, normpath
from os.path import exists, isdir, isfile
from os.path import join as joinpath, split as splitpath
+from re import match
# SCons includes
import SCons
import SCons.Node
+import SCons.Node.FS
-extra_python_paths = [
- Dir('src/python').srcnode().abspath, # gem5 includes
- Dir('ext/ply').srcnode().abspath, # ply is used by several files
- ]
-
-sys.path[1:1] = extra_python_paths
-
-from m5.util import compareVersions, readCommand
-from m5.util.terminal import get_termcap
+from m5.util import compareVersions, readCommand, readCommandWithReturn
help_texts = {
"options" : "",
# Help() function, but these two features are incompatible: once
# you've overridden the help text using Help(), there's no way to get
# at the help texts from AddOptions. See:
-# http://scons.tigris.org/issues/show_bug.cgi?id=2356
-# http://scons.tigris.org/issues/show_bug.cgi?id=2611
+# https://github.com/SCons/scons/issues/2356
+# https://github.com/SCons/scons/issues/2611
# This hack lets us extract the help text from AddOptions and
# re-inject it via Help(). Ideally someday this bug will be fixed and
# we can just use AddOption directly.
help="Add color to abbreviated scons output")
AddLocalOption('--no-colors', dest='use_colors', action='store_false',
help="Don't add color to abbreviated scons output")
-AddLocalOption('--with-cxx-config', dest='with_cxx_config',
- action='store_true',
+AddLocalOption('--with-cxx-config', action='store_true',
help="Build with support for C++-based configuration")
-AddLocalOption('--default', dest='default', type='string', action='store',
+AddLocalOption('--default',
help='Override which build_opts file to use for defaults')
-AddLocalOption('--ignore-style', dest='ignore_style', action='store_true',
+AddLocalOption('--ignore-style', action='store_true',
help='Disable style checking hooks')
-AddLocalOption('--no-lto', dest='no_lto', action='store_true',
+AddLocalOption('--gold-linker', action='store_true',
+ help='Use the gold linker')
+AddLocalOption('--no-lto', action='store_true',
help='Disable Link-Time Optimization for fast')
-AddLocalOption('--force-lto', dest='force_lto', action='store_true',
+AddLocalOption('--force-lto', action='store_true',
help='Use Link-Time Optimization instead of partial linking' +
' when the compiler doesn\'t support using them together.')
-AddLocalOption('--update-ref', dest='update_ref', action='store_true',
- help='Update test reference outputs')
-AddLocalOption('--verbose', dest='verbose', action='store_true',
+AddLocalOption('--verbose', action='store_true',
help='Print full tool command lines')
-AddLocalOption('--without-python', dest='without_python',
- action='store_true',
+AddLocalOption('--without-python', action='store_true',
help='Build without Python configuration support')
-AddLocalOption('--without-tcmalloc', dest='without_tcmalloc',
- action='store_true',
+AddLocalOption('--without-tcmalloc', action='store_true',
help='Disable linking against tcmalloc')
-AddLocalOption('--with-ubsan', dest='with_ubsan', action='store_true',
+AddLocalOption('--with-ubsan', action='store_true',
help='Build with Undefined Behavior Sanitizer if available')
-AddLocalOption('--with-asan', dest='with_asan', action='store_true',
+AddLocalOption('--with-asan', action='store_true',
help='Build with Address Sanitizer if available')
+AddLocalOption('--with-systemc-tests', action='store_true',
+ help='Build systemc tests')
-if GetOption('no_lto') and GetOption('force_lto'):
- print '--no-lto and --force-lto are mutually exclusive'
- Exit(1)
+from gem5_scons import Transform, error, warning, summarize_warnings
-termcap = get_termcap(GetOption('use_colors'))
+if GetOption('no_lto') and GetOption('force_lto'):
+ error('--no-lto and --force-lto are mutually exclusive')
########################################################################
#
#
########################################################################
-# export TERM so that clang reports errors in color
-use_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH',
- 'LIBRARY_PATH', 'PATH', 'PKG_CONFIG_PATH', 'PROTOC',
- 'PYTHONPATH', 'RANLIB', 'TERM' ])
-
-use_prefixes = [
- "ASAN_", # address sanitizer symbolizer path and settings
- "CCACHE_", # ccache (caching compiler wrapper) configuration
- "CCC_", # clang static analyzer configuration
- "DISTCC_", # distcc (distributed compiler wrapper) configuration
- "INCLUDE_SERVER_", # distcc pump server settings
- "M5", # M5 configuration (e.g., path to kernels)
- ]
-
-use_env = {}
-for key,val in sorted(os.environ.iteritems()):
- if key in use_vars or \
- any([key.startswith(prefix) for prefix in use_prefixes]):
- use_env[key] = val
-
-# Tell scons to avoid implicit command dependencies to avoid issues
-# with the param wrappes being compiled twice (see
-# http://scons.tigris.org/issues/show_bug.cgi?id=2811)
-main = Environment(ENV=use_env, IMPLICIT_COMMAND_DEPENDENCIES=0)
-main.Decider('MD5-timestamp')
-main.root = Dir(".") # The current directory (where this file lives).
-main.srcdir = Dir("src") # The source directory
+main = Environment()
+
+from gem5_scons.util import get_termcap
+termcap = get_termcap()
main_dict_keys = main.Dictionary().keys()
# Check that we have a C/C++ compiler
if not ('CC' in main_dict_keys and 'CXX' in main_dict_keys):
- print "No C++ compiler installed (package g++ on Ubuntu and RedHat)"
- Exit(1)
-
-# add useful python code PYTHONPATH so it can be used by subprocesses
-# as well
-main.AppendENVPath('PYTHONPATH', extra_python_paths)
-
-########################################################################
-#
-# Mercurial Stuff.
-#
-# If the gem5 directory is a mercurial repository, we should do some
-# extra things.
-#
-########################################################################
-
-hgdir = main.root.Dir(".hg")
-
-
-style_message = """
-You're missing the gem5 style hook, which automatically checks your code
-against the gem5 style rules on %s.
-This script will now install the hook in your %s.
-Press enter to continue, or ctrl-c to abort: """
-
-mercurial_style_message = """
-You're missing the gem5 style hook, which automatically checks your code
-against the gem5 style rules on hg commit and qrefresh commands.
-This script will now install the hook in your .hg/hgrc file.
-Press enter to continue, or ctrl-c to abort: """
-
-git_style_message = """
-You're missing the gem5 style or commit message hook. These hooks help
-to ensure that your code follows gem5's style rules on git commit.
-This script will now install the hook in your .git/hooks/ directory.
-Press enter to continue, or ctrl-c to abort: """
-
-mercurial_style_upgrade_message = """
-Your Mercurial style hooks are not up-to-date. This script will now
-try to automatically update them. A backup of your hgrc will be saved
-in .hg/hgrc.old.
-Press enter to continue, or ctrl-c to abort: """
-
-mercurial_style_hook = """
-# The following lines were automatically added by gem5/SConstruct
-# to provide the gem5 style-checking hooks
-[extensions]
-hgstyle = %s/util/hgstyle.py
-
-[hooks]
-pretxncommit.style = python:hgstyle.check_style
-pre-qrefresh.style = python:hgstyle.check_style
-# End of SConstruct additions
-
-""" % (main.root.abspath)
-
-mercurial_lib_not_found = """
-Mercurial libraries cannot be found, ignoring style hook. If
-you are a gem5 developer, please fix this and run the style
-hook. It is important.
-"""
-
-# Check for style hook and prompt for installation if it's not there.
-# Skip this if --ignore-style was specified, there's no interactive
-# terminal to prompt, or no recognized revision control system can be
-# found.
-ignore_style = GetOption('ignore_style') or not sys.stdin.isatty()
-
-# Try wire up Mercurial to the style hooks
-if not ignore_style and hgdir.exists():
- style_hook = True
- style_hooks = tuple()
- hgrc = hgdir.File('hgrc')
- hgrc_old = hgdir.File('hgrc.old')
- try:
- from mercurial import ui
- ui = ui.ui()
- ui.readconfig(hgrc.abspath)
- style_hooks = (ui.config('hooks', 'pretxncommit.style', None),
- ui.config('hooks', 'pre-qrefresh.style', None))
- style_hook = all(style_hooks)
- style_extension = ui.config('extensions', 'style', None)
- except ImportError:
- print mercurial_lib_not_found
-
- if "python:style.check_style" in style_hooks:
- # Try to upgrade the style hooks
- print mercurial_style_upgrade_message
- # continue unless user does ctrl-c/ctrl-d etc.
- try:
- raw_input()
- except:
- print "Input exception, exiting scons.\n"
- sys.exit(1)
- shutil.copyfile(hgrc.abspath, hgrc_old.abspath)
- re_style_hook = re.compile(r"^([^=#]+)\.style\s*=\s*([^#\s]+).*")
- re_style_extension = re.compile("style\s*=\s*([^#\s]+).*")
- old, new = open(hgrc_old.abspath, 'r'), open(hgrc.abspath, 'w')
- for l in old:
- m_hook = re_style_hook.match(l)
- m_ext = re_style_extension.match(l)
- if m_hook:
- hook, check = m_hook.groups()
- if check != "python:style.check_style":
- print "Warning: %s.style is using a non-default " \
- "checker: %s" % (hook, check)
- if hook not in ("pretxncommit", "pre-qrefresh"):
- print "Warning: Updating unknown style hook: %s" % hook
-
- l = "%s.style = python:hgstyle.check_style\n" % hook
- elif m_ext and m_ext.group(1) == style_extension:
- l = "hgstyle = %s/util/hgstyle.py\n" % main.root.abspath
-
- new.write(l)
- elif not style_hook:
- print mercurial_style_message,
- # continue unless user does ctrl-c/ctrl-d etc.
- try:
- raw_input()
- except:
- print "Input exception, exiting scons.\n"
- sys.exit(1)
- hgrc_path = '%s/.hg/hgrc' % main.root.abspath
- print "Adding style hook to", hgrc_path, "\n"
- try:
- with open(hgrc_path, 'a') as f:
- f.write(mercurial_style_hook)
- except:
- print "Error updating", hgrc_path
- sys.exit(1)
-
-def install_git_style_hooks():
- try:
- gitdir = Dir(readCommand(
- ["git", "rev-parse", "--git-dir"]).strip("\n"))
- except Exception, e:
- print "Warning: Failed to find git repo directory: %s" % e
- return
-
- git_hooks = gitdir.Dir("hooks")
- def hook_exists(hook_name):
- hook = git_hooks.File(hook_name)
- return hook.exists()
-
- def hook_install(hook_name, script):
- hook = git_hooks.File(hook_name)
- if hook.exists():
- print "Warning: Can't install %s, hook already exists." % hook_name
- return
-
- if hook.islink():
- print "Warning: Removing broken symlink for hook %s." % hook_name
- os.unlink(hook.get_abspath())
-
- if not git_hooks.exists():
- mkdir(git_hooks.get_abspath())
- git_hooks.clear()
-
- abs_symlink_hooks = git_hooks.islink() and \
- os.path.isabs(os.readlink(git_hooks.get_abspath()))
-
- # Use a relative symlink if the hooks live in the source directory,
- # and the hooks directory is not a symlink to an absolute path.
- if hook.is_under(main.root) and not abs_symlink_hooks:
- script_path = os.path.relpath(
- os.path.realpath(script.get_abspath()),
- os.path.realpath(hook.Dir(".").get_abspath()))
- else:
- script_path = script.get_abspath()
-
- try:
- os.symlink(script_path, hook.get_abspath())
- except:
- print "Error updating git %s hook" % hook_name
- raise
-
- if hook_exists("pre-commit") and hook_exists("commit-msg"):
- return
-
- print git_style_message,
- try:
- raw_input()
- except:
- print "Input exception, exiting scons.\n"
- sys.exit(1)
-
- git_style_script = File("util/git-pre-commit.py")
- git_msg_script = File("ext/git-commit-msg")
-
- hook_install("pre-commit", git_style_script)
- hook_install("commit-msg", git_msg_script)
-
-# Try to wire up git to the style hooks
-if not ignore_style and main.root.Entry(".git").exists():
- install_git_style_hooks()
+ error("No C++ compiler installed (package g++ on Ubuntu and RedHat)")
###################################################
#
###################################################
# Find default configuration & binary.
-Default(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA/gem5.debug'))
+Default(environ.get('M5_DEFAULT_BINARY', 'build/ARM/gem5.debug'))
# helper function: find last occurrence of element in list
def rfind(l, elt, offs = -1):
for i in range(len(l)+offs, 0, -1):
if l[i] == elt:
return i
- raise ValueError, "element not found"
+ raise ValueError("element not found")
# Take a list of paths (or SCons Nodes) and return a list with all
# paths made absolute and ~-expanded. Paths will be interpreted
# Each target must have 'build' in the interior of the path; the
# directory below this will determine the build parameters. For
-# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we
-# recognize that ALPHA_SE specifies the configuration because it
+# example, for target 'foo/bar/build/X86/arch/x86/blah.do' we
+# recognize that X86 specifies the configuration because it
# follow 'build' in the build path.
# The funky assignment to "[:]" is needed to replace the list contents
try:
build_top = rfind(path_dirs, 'build', -2)
except:
- print "Error: no non-leaf 'build' dir found on target path", t
- Exit(1)
+ error("No non-leaf 'build' dir found on target path.", t)
this_build_root = joinpath('/',*path_dirs[:build_top+1])
if not build_root:
build_root = this_build_root
else:
if this_build_root != build_root:
- print "Error: build targets not under same build root\n"\
- " %s\n %s" % (build_root, this_build_root)
- Exit(1)
+ error("build targets not under same build root\n"
+ " %s\n %s" % (build_root, this_build_root))
variant_path = joinpath('/',*path_dirs[:build_top+2])
if variant_path not in variant_paths:
variant_paths.append(variant_path)
#
# Set up global sticky variables... these are common to an entire build
-# tree (not specific to a particular build like ALPHA_SE)
+# tree (not specific to a particular build like X86)
#
global_vars_file = joinpath(build_root, 'variables.global')
global_vars.AddVariables(
('CC', 'C compiler', environ.get('CC', main['CC'])),
('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])),
+ ('CCFLAGS_EXTRA', 'Extra C and C++ compiler flags', ''),
+ ('LDFLAGS_EXTRA', 'Extra linker flags', ''),
+ ('MARSHAL_CCFLAGS_EXTRA', 'Extra C and C++ marshal compiler flags', ''),
+ ('MARSHAL_LDFLAGS_EXTRA', 'Extra marshal linker flags', ''),
+ ('PYTHON_CONFIG', 'Python config binary to use',
+ [ 'python2.7-config', 'python-config', 'python3-config' ]),
('PROTOC', 'protoc tool', environ.get('PROTOC', 'protoc')),
('BATCH', 'Use batch pool for build and tests', False),
('BATCH_CMD', 'Batch pool submission command name', 'qdo'),
# Add shared top-level headers
main.Prepend(CPPPATH=Dir('include'))
-def strip_build_path(path, env):
- path = str(path)
- variant_base = env['BUILDROOT'] + os.path.sep
- if path.startswith(variant_base):
- path = path[len(variant_base):]
- elif path.startswith('build/'):
- path = path[6:]
- return path
-
-# Generate a string of the form:
-# common/path/prefix/src1, src2 -> tgt1, tgt2
-# to print while building.
-class Transform(object):
- # all specific color settings should be here and nowhere else
- tool_color = termcap.Normal
- pfx_color = termcap.Yellow
- srcs_color = termcap.Yellow + termcap.Bold
- arrow_color = termcap.Blue + termcap.Bold
- tgts_color = termcap.Yellow + termcap.Bold
-
- def __init__(self, tool, max_sources=99):
- self.format = self.tool_color + (" [%8s] " % tool) \
- + self.pfx_color + "%s" \
- + self.srcs_color + "%s" \
- + self.arrow_color + " -> " \
- + self.tgts_color + "%s" \
- + termcap.Normal
- self.max_sources = max_sources
-
- def __call__(self, target, source, env, for_signature=None):
- # truncate source list according to max_sources param
- source = source[0:self.max_sources]
- def strip(f):
- return strip_build_path(str(f), env)
- if len(source) > 0:
- srcs = map(strip, source)
- else:
- srcs = ['']
- tgts = map(strip, target)
- # surprisingly, os.path.commonprefix is a dumb char-by-char string
- # operation that has nothing to do with paths.
- com_pfx = os.path.commonprefix(srcs + tgts)
- com_pfx_len = len(com_pfx)
- if com_pfx:
- # do some cleanup and sanity checking on common prefix
- if com_pfx[-1] == ".":
- # prefix matches all but file extension: ok
- # back up one to change 'foo.cc -> o' to 'foo.cc -> .o'
- com_pfx = com_pfx[0:-1]
- elif com_pfx[-1] == "/":
- # common prefix is directory path: OK
- pass
- else:
- src0_len = len(srcs[0])
- tgt0_len = len(tgts[0])
- if src0_len == com_pfx_len:
- # source is a substring of target, OK
- pass
- elif tgt0_len == com_pfx_len:
- # target is a substring of source, need to back up to
- # avoid empty string on RHS of arrow
- sep_idx = com_pfx.rfind(".")
- if sep_idx != -1:
- com_pfx = com_pfx[0:sep_idx]
- else:
- com_pfx = ''
- elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".":
- # still splitting at file extension: ok
- pass
- else:
- # probably a fluke; ignore it
- com_pfx = ''
- # recalculate length in case com_pfx was modified
- com_pfx_len = len(com_pfx)
- def fmt(files):
- f = map(lambda s: s[com_pfx_len:], files)
- return ', '.join(f)
- return self.format % (com_pfx, fmt(srcs), fmt(tgts))
-
-Export('Transform')
-
-# enable the regression script to use the termcap
-main['TERMCAP'] = termcap
-
if GetOption('verbose'):
def MakeAction(action, string, *args, **kwargs):
return Action(action, *args, **kwargs)
main['GCC'] = CXX_version and CXX_version.find('g++') >= 0
main['CLANG'] = CXX_version and CXX_version.find('clang') >= 0
if main['GCC'] + main['CLANG'] > 1:
- print 'Error: How can we have two at the same time?'
- Exit(1)
+ error('Two compilers enabled at once?')
# Set up default C++ compiler flags
if main['GCC'] or main['CLANG']:
main.Append(CCFLAGS=['-I/usr/local/include'])
main.Append(CXXFLAGS=['-I/usr/local/include'])
+ # On Mac OS X/Darwin the default linker doesn't support the
+ # option --as-needed
+ if sys.platform != "darwin":
+ main.Append(LINKFLAGS='-Wl,--as-needed')
main['FILTER_PSHLINKFLAGS'] = lambda x: str(x).replace(' -shared', '')
main['PSHLINKFLAGS'] = main.subst('${FILTER_PSHLINKFLAGS(SHLINKFLAGS)}')
- main['PLINKFLAGS'] = main.subst('${LINKFLAGS}')
+ if GetOption('gold_linker'):
+ main.Append(LINKFLAGS='-fuse-ld=gold')
+ main['PLINKFLAGS'] = main.get('LINKFLAGS')
shared_partial_flags = ['-r', '-nostdlib']
main.Append(PSHLINKFLAGS=shared_partial_flags)
main.Append(PLINKFLAGS=shared_partial_flags)
+
+ # Treat warnings as errors but white list some warnings that we
+ # want to allow (e.g., deprecation warnings).
+ main.Append(CCFLAGS=['-Werror',
+ '-Wno-error=deprecated-declarations',
+ '-Wno-error=deprecated',
+ ])
else:
- print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal,
- print "Don't know what compiler options to use for your compiler."
- print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX']
- print termcap.Yellow + ' version:' + termcap.Normal,
- if not CXX_version:
- print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\
- termcap.Normal
- else:
- print CXX_version.replace('\n', '<nl>')
- print " If you're trying to use a compiler other than GCC"
- print " or clang, there appears to be something wrong with your"
- print " environment."
- print " "
- print " If you are trying to use a compiler other than those listed"
- print " above you will need to ease fix SConstruct and "
- print " src/SConscript to support that compiler."
- Exit(1)
+ error('\n'.join((
+ "Don't know what compiler options to use for your compiler.",
+ "compiler: " + main['CXX'],
+ "version: " + CXX_version.replace('\n', '<nl>') if
+ CXX_version else 'COMMAND NOT FOUND!',
+ "If you're trying to use a compiler other than GCC",
+ "or clang, there appears to be something wrong with your",
+ "environment.",
+ "",
+ "If you are trying to use a compiler other than those listed",
+ "above you will need to ease fix SConstruct and ",
+ "src/SConscript to support that compiler.")))
if main['GCC']:
# Check for a supported version of gcc. >= 4.8 is chosen for its
# http://gcc.gnu.org/projects/cxx0x.html for details.
gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False)
if compareVersions(gcc_version, "4.8") < 0:
- print 'Error: gcc version 4.8 or newer required.'
- print ' Installed version:', gcc_version
+ error('gcc version 4.8 or newer required.\n'
+ 'Installed version:', gcc_version)
Exit(1)
main['GCC_VERSION'] = gcc_version
main.Append(PSHLINKFLAGS='-flinker-output=rel')
main.Append(PLINKFLAGS='-flinker-output=rel')
- # gcc from version 4.8 and above generates "rep; ret" instructions
- # to avoid performance penalties on certain AMD chips. Older
- # assemblers detect this as an error, "Error: expecting string
- # instruction after `rep'"
- as_version_raw = readCommand([main['AS'], '-v', '/dev/null',
- '-o', '/dev/null'],
- exception=False).split()
-
- # version strings may contain extra distro-specific
- # qualifiers, so play it safe and keep only what comes before
- # the first hyphen
- as_version = as_version_raw[-1].split('-')[0] if as_version_raw else None
-
- if not as_version or compareVersions(as_version, "2.23") < 0:
- print termcap.Yellow + termcap.Bold + \
- 'Warning: This combination of gcc and binutils have' + \
- ' known incompatibilities.\n' + \
- ' If you encounter build problems, please update ' + \
- 'binutils to 2.23.' + \
- termcap.Normal
-
- # Make sure we warn if the user has requested to compile with the
- # Undefined Benahvior Sanitizer and this version of gcc does not
- # support it.
- if GetOption('with_ubsan') and \
- compareVersions(gcc_version, '4.9') < 0:
- print termcap.Yellow + termcap.Bold + \
- 'Warning: UBSan is only supported using gcc 4.9 and later.' + \
- termcap.Normal
-
disable_lto = GetOption('no_lto')
if not disable_lto and main.get('BROKEN_INCREMENTAL_LTO', False) and \
not GetOption('force_lto'):
- print termcap.Yellow + termcap.Bold + \
- 'Warning: Your compiler doesn\'t support incremental linking' + \
- ' and lto at the same time, so lto is being disabled. To force' + \
- ' lto on anyway, use the --force-lto option. That will disable' + \
- ' partial linking.' + \
- termcap.Normal
+ warning('Your compiler doesn\'t support incremental linking and lto '
+ 'at the same time, so lto is being disabled. To force lto on '
+ 'anyway, use the --force-lto option. That will disable '
+ 'partial linking.')
disable_lto = True
# Add the appropriate Link-Time Optimization (LTO) flags
main.Append(TCMALLOC_CCFLAGS=['-fno-builtin-malloc', '-fno-builtin-calloc',
'-fno-builtin-realloc', '-fno-builtin-free'])
- # add option to check for undeclared overrides
- if compareVersions(gcc_version, "5.0") > 0:
- main.Append(CCFLAGS=['-Wno-error=suggest-override'])
-
elif main['CLANG']:
# Check for a supported version of clang, >= 3.1 is needed to
# support similar features as gcc 4.8. See
if (clang_version_match):
clang_version = clang_version_match.groups()[0]
if compareVersions(clang_version, "3.1") < 0:
- print 'Error: clang version 3.1 or newer required.'
- print ' Installed version:', clang_version
- Exit(1)
+ error('clang version 3.1 or newer required.\n'
+ 'Installed version:', clang_version)
else:
- print 'Error: Unable to determine clang version.'
- Exit(1)
+ error('Unable to determine clang version.')
# clang has a few additional warnings that we disable, extraneous
# parantheses are allowed due to Ruby's printing of the AST,
# interchangeably.
'-Wno-mismatched-tags',
])
+ if compareVersions(clang_version, "10.0") >= 0:
+ main.Append(CCFLAGS=['-Wno-c99-designator'])
+
+ if compareVersions(clang_version, "8.0") >= 0:
+ main.Append(CCFLAGS=['-Wno-defaulted-function-deleted'])
main.Append(TCMALLOC_CCFLAGS=['-fno-builtin'])
if sys.platform.startswith('freebsd'):
main.Append(LIBS=['thr'])
-else:
- print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal,
- print "Don't know what compiler options to use for your compiler."
- print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX']
- print termcap.Yellow + ' version:' + termcap.Normal,
- if not CXX_version:
- print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\
- termcap.Normal
+# Add sanitizers flags
+sanitizers=[]
+if GetOption('with_ubsan'):
+ # Only gcc >= 4.9 supports UBSan, so check both the version
+ # and the command-line option before adding the compiler and
+ # linker flags.
+ if not main['GCC'] or compareVersions(main['GCC_VERSION'], '4.9') >= 0:
+ sanitizers.append('undefined')
+if GetOption('with_asan'):
+ # Available for gcc >= 4.8 or llvm >= 3.1 both a requirement
+ # by the build system
+ sanitizers.append('address')
+ suppressions_file = Dir('util').File('lsan-suppressions').get_abspath()
+ suppressions_opt = 'suppressions=%s' % suppressions_file
+ main['ENV']['LSAN_OPTIONS'] = ':'.join([suppressions_opt,
+ 'print_suppressions=0'])
+ print()
+ warning('To suppress false positive leaks, set the LSAN_OPTIONS '
+ 'environment variable to "%s" when running gem5' %
+ suppressions_opt)
+ warning('LSAN_OPTIONS=suppressions=%s' % suppressions_opt)
+ print()
+if sanitizers:
+ sanitizers = ','.join(sanitizers)
+ if main['GCC'] or main['CLANG']:
+ main.Append(CCFLAGS=['-fsanitize=%s' % sanitizers,
+ '-fno-omit-frame-pointer'],
+ LINKFLAGS='-fsanitize=%s' % sanitizers)
else:
- print CXX_version.replace('\n', '<nl>')
- print " If you're trying to use a compiler other than GCC"
- print " or clang, there appears to be something wrong with your"
- print " environment."
- print " "
- print " If you are trying to use a compiler other than those listed"
- print " above you will need to ease fix SConstruct and "
- print " src/SConscript to support that compiler."
- Exit(1)
+ warning("Don't know how to enable %s sanitizer(s) for your "
+ "compiler." % sanitizers)
# Set up common yacc/bison flags (needed for Ruby)
main['YACCFLAGS'] = '-d'
# cygwin has some header file issues...
main.Append(CCFLAGS=["-Wno-uninitialized"])
+
+have_pkg_config = readCommand(['pkg-config', '--version'], exception='')
+
# Check for the protobuf compiler
-protoc_version = readCommand([main['PROTOC'], '--version'],
- exception='').split()
-
-# First two words should be "libprotoc x.y.z"
-if len(protoc_version) < 2 or protoc_version[0] != 'libprotoc':
- print termcap.Yellow + termcap.Bold + \
- 'Warning: Protocol buffer compiler (protoc) not found.\n' + \
- ' Please install protobuf-compiler for tracing support.' + \
- termcap.Normal
- main['PROTOC'] = False
-else:
- # Based on the availability of the compress stream wrappers,
- # require 2.1.0
- min_protoc_version = '2.1.0'
- if compareVersions(protoc_version[1], min_protoc_version) < 0:
- print termcap.Yellow + termcap.Bold + \
- 'Warning: protoc version', min_protoc_version, \
- 'or newer required.\n' + \
- ' Installed version:', protoc_version[1], \
- termcap.Normal
- main['PROTOC'] = False
+try:
+ main['HAVE_PROTOC'] = True
+ protoc_version = readCommand([main['PROTOC'], '--version']).split()
+
+ # First two words should be "libprotoc x.y.z"
+ if len(protoc_version) < 2 or protoc_version[0] != 'libprotoc':
+ warning('Protocol buffer compiler (protoc) not found.\n'
+ 'Please install protobuf-compiler for tracing support.')
+ main['HAVE_PROTOC'] = False
else:
- # Attempt to determine the appropriate include path and
- # library path using pkg-config, that means we also need to
- # check for pkg-config. Note that it is possible to use
- # protobuf without the involvement of pkg-config. Later on we
- # check go a library config check and at that point the test
- # will fail if libprotobuf cannot be found.
- if readCommand(['pkg-config', '--version'], exception=''):
- try:
- # Attempt to establish what linking flags to add for protobuf
- # using pkg-config
- main.ParseConfig('pkg-config --cflags --libs-only-L protobuf')
- except:
- print termcap.Yellow + termcap.Bold + \
- 'Warning: pkg-config could not get protobuf flags.' + \
- termcap.Normal
-
+ # Based on the availability of the compress stream wrappers,
+ # require 2.1.0
+ min_protoc_version = '2.1.0'
+ if compareVersions(protoc_version[1], min_protoc_version) < 0:
+ warning('protoc version', min_protoc_version,
+ 'or newer required.\n'
+ 'Installed version:', protoc_version[1])
+ main['HAVE_PROTOC'] = False
+ else:
+ # Attempt to determine the appropriate include path and
+ # library path using pkg-config, that means we also need to
+ # check for pkg-config. Note that it is possible to use
+ # protobuf without the involvement of pkg-config. Later on we
+ # check go a library config check and at that point the test
+ # will fail if libprotobuf cannot be found.
+ if have_pkg_config:
+ try:
+ # Attempt to establish what linking flags to add for
+ # protobuf
+ # using pkg-config
+ main.ParseConfig(
+ 'pkg-config --cflags --libs-only-L protobuf')
+ except:
+ warning('pkg-config could not get protobuf flags.')
+except Exception as e:
+ warning('While checking protoc version:', str(e))
+ main['HAVE_PROTOC'] = False
# Check for 'timeout' from GNU coreutils. If present, regressions will
# be run with a time limit. We require version 8.13 since we rely on
# Cache build files in the supplied directory.
if main['M5_BUILD_CACHE']:
- print 'Using build cache located at', main['M5_BUILD_CACHE']
+ print('Using build cache located at', main['M5_BUILD_CACHE'])
CacheDir(main['M5_BUILD_CACHE'])
main['USE_PYTHON'] = not GetOption('without_python')
# we add them explicitly below. If you want to link in an alternate
# version of python, see above for instructions on how to invoke
# scons with the appropriate PATH set.
- #
- # First we check if python2-config exists, else we use python-config
- python_config = readCommand(['which', 'python2-config'],
- exception='').strip()
- if not os.path.exists(python_config):
- python_config = readCommand(['which', 'python-config'],
- exception='').strip()
+
+ python_config = main.Detect(main['PYTHON_CONFIG'])
+ if python_config is None:
+ error("Can't find a suitable python-config, tried %s" % \
+ main['PYTHON_CONFIG'])
+
+ print("Info: Using Python config: %s" % (python_config, ))
py_includes = readCommand([python_config, '--includes'],
exception='').split()
+ py_includes = list(filter(
+ lambda s: match(r'.*\/include\/.*',s), py_includes))
# Strip the -I from the include folders before adding them to the
# CPPPATH
- main.Append(CPPPATH=map(lambda inc: inc[2:], py_includes))
+ py_includes = list(map(
+ lambda s: s[2:] if s.startswith('-I') else s, py_includes))
+ main.Append(CPPPATH=py_includes)
# Read the linker flags and split them into libraries and other link
# flags. The libraries are added later through the call the CheckLib.
- py_ld_flags = readCommand([python_config, '--ldflags'],
- exception='').split()
+ # Note: starting in Python 3.8 the --embed flag is required to get the
+ # -lpython3.8 linker flag
+ retcode, cmd_stdout = readCommandWithReturn(
+ [python_config, '--ldflags', '--embed'], exception='')
+ if retcode != 0:
+ # If --embed isn't detected then we're running python <3.8
+ retcode, cmd_stdout = readCommandWithReturn(
+ [python_config, '--ldflags'], exception='')
+
+ # Checking retcode again
+ if retcode != 0:
+ error("Failing on python-config --ldflags command")
+
+ py_ld_flags = cmd_stdout.split()
+
py_libs = []
for lib in py_ld_flags:
if not lib.startswith('-l'):
# verify that this stuff works
if not conf.CheckHeader('Python.h', '<>'):
- print "Error: can't find Python.h header in", py_includes
- print "Install Python headers (package python-dev on Ubuntu and RedHat)"
- Exit(1)
+ error("Check failed for Python.h header in",
+ ' '.join(py_includes), "\n"
+ "Two possible reasons:\n"
+ "1. Python headers are not installed (You can install the "
+ "package python-dev on Ubuntu and RedHat)\n"
+ "2. SCons is using a wrong C compiler. This can happen if "
+ "CC has the wrong value.\n"
+ "CC = %s" % main['CC'])
for lib in py_libs:
if not conf.CheckLib(lib):
- print "Error: can't find library %s required by python" % lib
- Exit(1)
+ error("Can't find library %s required by python." % lib)
+
+main.Prepend(CPPPATH=Dir('ext/pybind11/include/'))
+# Bare minimum environment that only includes python
+marshal_env = main.Clone()
+marshal_env.Append(CCFLAGS='$MARSHAL_CCFLAGS_EXTRA')
+marshal_env.Append(LINKFLAGS='$MARSHAL_LDFLAGS_EXTRA')
# On Solaris you need to use libsocket for socket ops
if not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'):
- if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'):
- print "Can't find library with socket calls (e.g. accept())"
- Exit(1)
+ if not conf.CheckLibWithHeader('socket', 'sys/socket.h',
+ 'C++', 'accept(0,0,0);'):
+ error("Can't find library with socket calls (e.g. accept()).")
# Check for zlib. If the check passes, libz will be automatically
# added to the LIBS environment variable.
if not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'):
- print 'Error: did not find needed zlib compression library '\
- 'and/or zlib.h header file.'
- print ' Please install zlib and try again.'
- Exit(1)
+ error('Did not find needed zlib compression library '
+ 'and/or zlib.h header file.\n'
+ 'Please install zlib and try again.')
+
+if not conf.CheckLibWithHeader('elf', 'gelf.h', 'C++',
+ 'elf_version(EV_CURRENT);'):
+ error('Did not find ELF access library libelf')
# If we have the protobuf compiler, also make sure we have the
# development libraries. If the check passes, libprotobuf will be
# automatically added to the LIBS environment variable. After
# this, we can use the HAVE_PROTOBUF flag to determine if we have
# got both protoc and libprotobuf available.
-main['HAVE_PROTOBUF'] = main['PROTOC'] and \
+main['HAVE_PROTOBUF'] = main['HAVE_PROTOC'] and \
conf.CheckLibWithHeader('protobuf', 'google/protobuf/message.h',
'C++', 'GOOGLE_PROTOBUF_VERIFY_VERSION;')
+# Valgrind gets much less confused if you tell it when you're using
+# alternative stacks.
+main['HAVE_VALGRIND'] = conf.CheckCHeader('valgrind/valgrind.h')
+
# If we have the compiler but not the library, print another warning.
-if main['PROTOC'] and not main['HAVE_PROTOBUF']:
- print termcap.Yellow + termcap.Bold + \
- 'Warning: did not find protocol buffer library and/or headers.\n' + \
- ' Please install libprotobuf-dev for tracing support.' + \
- termcap.Normal
+if main['HAVE_PROTOC'] and not main['HAVE_PROTOBUF']:
+ warning('Did not find protocol buffer library and/or headers.\n'
+ 'Please install libprotobuf-dev for tracing support.')
# Check for librt.
have_posix_clock = \
elif conf.CheckLib('tcmalloc_minimal'):
main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS'])
else:
- print termcap.Yellow + termcap.Bold + \
- "You can get a 12% performance improvement by "\
- "installing tcmalloc (libgoogle-perftools-dev package "\
- "on Ubuntu or RedHat)." + termcap.Normal
+ warning("You can get a 12% performance improvement by "
+ "installing tcmalloc (libgoogle-perftools-dev package "
+ "on Ubuntu or RedHat).")
# Detect back trace implementations. The last implementation in the
# list will be used by default.
backtrace_impls = [ "none" ]
-if conf.CheckLibWithHeader(None, 'execinfo.h', 'C',
- 'backtrace_symbols_fd((void*)0, 0, 0);'):
+backtrace_checker = 'char temp;' + \
+ ' backtrace_symbols_fd((void*)&temp, 0, 0);'
+if conf.CheckLibWithHeader(None, 'execinfo.h', 'C', backtrace_checker):
backtrace_impls.append("glibc")
elif conf.CheckLibWithHeader('execinfo', 'execinfo.h', 'C',
- 'backtrace_symbols_fd((void*)0, 0, 0);'):
+ backtrace_checker):
# NetBSD and FreeBSD need libexecinfo.
backtrace_impls.append("glibc")
main.Append(LIBS=['execinfo'])
if backtrace_impls[-1] == "none":
default_backtrace_impl = "none"
- print termcap.Yellow + termcap.Bold + \
- "No suitable back trace implementation found." + \
- termcap.Normal
+ warning("No suitable back trace implementation found.")
if not have_posix_clock:
- print "Can't find library for POSIX clocks."
+ warning("Can't find library for POSIX clocks.")
# Check for <fenv.h> (C99 FP environment control)
have_fenv = conf.CheckHeader('fenv.h', '<>')
if not have_fenv:
- print "Warning: Header file <fenv.h> not found."
- print " This host has no IEEE FP rounding mode control."
+ warning("Header file <fenv.h> not found.\n"
+ "This host has no IEEE FP rounding mode control.")
+
+# Check for <png.h> (libpng library needed if wanting to dump
+# frame buffer image in png format)
+have_png = conf.CheckHeader('png.h', '<>')
+if not have_png:
+ warning("Header file <png.h> not found.\n"
+ "This host has no libpng library.\n"
+ "Disabling support for PNG framebuffers.")
# Check if we should enable KVM-based hardware virtualization. The API
# we rely on exists since version 2.6.36 of the kernel, but somehow
# the types as a fall back.
have_kvm = conf.CheckHeader('linux/kvm.h', '<>')
if not have_kvm:
- print "Info: Compatible header file <linux/kvm.h> not found, " \
- "disabling KVM support."
+ print("Info: Compatible header file <linux/kvm.h> not found, "
+ "disabling KVM support.")
# Check if the TUN/TAP driver is available.
have_tuntap = conf.CheckHeader('linux/if_tun.h', '<>')
if not have_tuntap:
- print "Info: Compatible header file <linux/if_tun.h> not found."
+ print("Info: Compatible header file <linux/if_tun.h> not found.")
# x86 needs support for xsave. We test for the structure here since we
# won't be able to run new tests by the time we know which ISA we're
import platform
host_isa = platform.machine()
except:
- print "Warning: Failed to determine host ISA."
+ warning("Failed to determine host ISA.")
return False
if not have_posix_timers:
- print "Warning: Can not enable KVM, host seems to lack support " \
- "for POSIX timers"
+ warning("Can not enable KVM, host seems to lack support "
+ "for POSIX timers")
return False
if isa == "arm":
return False
if not have_kvm_xsave:
- print "KVM on x86 requires xsave support in kernel headers."
+ warning("KVM on x86 requires xsave support in kernel headers.")
return False
return True
main['HAVE_PERF_ATTR_EXCLUDE_HOST'] = conf.CheckMember(
'linux/perf_event.h', 'struct perf_event_attr', 'exclude_host')
+def check_hdf5():
+ return \
+ conf.CheckLibWithHeader('hdf5', 'hdf5.h', 'C',
+ 'H5Fcreate("", 0, 0, 0);') and \
+ conf.CheckLibWithHeader('hdf5_cpp', 'H5Cpp.h', 'C++',
+ 'H5::H5File("", 0);')
+
+def check_hdf5_pkg(name):
+ print("Checking for %s using pkg-config..." % name, end="")
+ if not have_pkg_config:
+ print(" pkg-config not found")
+ return False
+
+ try:
+ main.ParseConfig('pkg-config --cflags-only-I --libs-only-L %s' % name)
+ print(" yes")
+ return True
+ except:
+ print(" no")
+ return False
+
+# Check if there is a pkg-config configuration for hdf5. If we find
+# it, setup the environment to enable linking and header inclusion. We
+# don't actually try to include any headers or link with hdf5 at this
+# stage.
+if not check_hdf5_pkg('hdf5-serial'):
+ check_hdf5_pkg('hdf5')
+
+# Check if the HDF5 libraries can be found. This check respects the
+# include path and library path provided by pkg-config. We perform
+# this check even if there isn't a pkg-config configuration for hdf5
+# since some installations don't use pkg-config.
+have_hdf5 = check_hdf5()
+if not have_hdf5:
+ print("Warning: Couldn't find any HDF5 C++ libraries. Disabling")
+ print(" HDF5 support.")
######################################################################
#
# Add self to dict
if name in CpuModel.dict:
- raise AttributeError, "CpuModel '%s' already registered" % name
+ raise AttributeError("CpuModel '%s' already registered" % name)
CpuModel.dict[name] = self
Export('CpuModel')
# Walk the tree and execute all SConsopts scripts that wil add to the
# above variables
if GetOption('verbose'):
- print "Reading SConsopts"
+ print("Reading SConsopts")
for bdir in [ base_dir ] + extras_dir_list:
if not isdir(bdir):
- print "Error: directory '%s' does not exist" % bdir
- Exit(1)
+ error("Directory '%s' does not exist." % bdir)
for root, dirs, files in os.walk(bdir):
if 'SConsopts' in files:
if GetOption('verbose'):
- print "Reading", joinpath(root, 'SConsopts')
+ print("Reading", joinpath(root, 'SConsopts'))
SConscript(joinpath(root, 'SConsopts'))
all_isa_list.sort()
all_gpu_isa_list.sort()
sticky_vars.AddVariables(
- EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list),
- EnumVariable('TARGET_GPU_ISA', 'Target GPU ISA', 'hsail', all_gpu_isa_list),
+ EnumVariable('TARGET_ISA', 'Target ISA', 'null', all_isa_list),
+ EnumVariable('TARGET_GPU_ISA', 'Target GPU ISA', 'gcn3', all_gpu_isa_list),
ListVariable('CPU_MODELS', 'CPU models',
- sorted(n for n,m in CpuModel.dict.iteritems() if m.default),
+ sorted(n for n,m in CpuModel.dict.items() if m.default),
sorted(CpuModel.dict.keys())),
BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger',
False),
- BoolVariable('SS_COMPATIBLE_FP',
- 'Make floating-point results compatible with SimpleScalar',
- False),
BoolVariable('USE_SSE2',
'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts',
False),
BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock),
BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv),
- BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False),
- BoolVariable('USE_KVM', 'Enable hardware virtualized (KVM) CPU models', have_kvm),
+ BoolVariable('USE_PNG', 'Enable support for PNG images', have_png),
+ BoolVariable('USE_KVM', 'Enable hardware virtualized (KVM) CPU models',
+ have_kvm),
BoolVariable('USE_TUNTAP',
'Enable using a tap device to bridge to the host network',
have_tuntap),
EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None',
all_protocols),
EnumVariable('BACKTRACE_IMPL', 'Post-mortem dump implementation',
- backtrace_impls[-1], backtrace_impls)
+ backtrace_impls[-1], backtrace_impls),
+ ('NUMBER_BITS_PER_SET', 'Max elements in set (default 64)',
+ 64),
+ BoolVariable('USE_HDF5', 'Enable the HDF5 support', have_hdf5),
)
# These variables get exported to #defines in config/*.hh (see src/SConscript).
-export_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 'TARGET_ISA', 'TARGET_GPU_ISA',
- 'CP_ANNOTATE', 'USE_POSIX_CLOCK', 'USE_KVM', 'USE_TUNTAP',
- 'PROTOCOL', 'HAVE_PROTOBUF', 'HAVE_PERF_ATTR_EXCLUDE_HOST']
+export_vars += ['USE_FENV', 'TARGET_ISA', 'TARGET_GPU_ISA',
+ 'USE_POSIX_CLOCK', 'USE_KVM', 'USE_TUNTAP', 'PROTOCOL',
+ 'HAVE_PROTOBUF', 'HAVE_VALGRIND',
+ 'HAVE_PERF_ATTR_EXCLUDE_HOST', 'USE_PNG',
+ 'NUMBER_BITS_PER_SET', 'USE_HDF5']
###################################################
#
# operands are the name of the variable and a Value node containing the
# value of the variable.
def build_config_file(target, source, env):
- (variable, value) = [s.get_contents() for s in source]
- f = file(str(target[0]), 'w')
- print >> f, '#define', variable, value
- f.close()
+ (variable, value) = [s.get_contents().decode('utf-8') for s in source]
+ with open(str(target[0]), 'w') as f:
+ print('#define', variable, value, file=f)
return None
# Combine the two functions into a scons Action object.
main.Append(BUILDERS = { 'PartialShared' : partial_shared_builder,
'PartialStatic' : partial_static_builder })
+def add_local_rpath(env, *targets):
+ '''Set up an RPATH for a library which lives in the build directory.
+
+ The construction environment variable BIN_RPATH_PREFIX should be set to
+ the relative path of the build directory starting from the location of the
+ binary.'''
+ for target in targets:
+ target = env.Entry(target)
+ if not isinstance(target, SCons.Node.FS.Dir):
+ target = target.dir
+ relpath = os.path.relpath(target.abspath, env['BUILDDIR'])
+ components = [
+ '\\$$ORIGIN',
+ '${BIN_RPATH_PREFIX}',
+ relpath
+ ]
+ env.Append(RPATH=[env.Literal(os.path.join(*components))])
+
+if sys.platform != "darwin":
+ main.Append(LINKFLAGS=Split('-z origin'))
+
+main.AddMethod(add_local_rpath, 'AddLocalRPATH')
+
# builds in ext are shared across all configs in the build root.
ext_dir = abspath(joinpath(str(main.root), 'ext'))
ext_build_dirs = []
main.SConscript(joinpath(root, 'SConscript'),
variant_dir=joinpath(build_root, build_dir))
-main.Prepend(CPPPATH=Dir('ext/pybind11/include/'))
+gdb_xml_dir = joinpath(ext_dir, 'gdb-xml')
+Export('gdb_xml_dir')
###################################################
#
dp = os.path.relpath(os.path.realpath(dp),
os.path.realpath(env['BUILDDIR']))
with open(path, 'w') as hdr:
- print >>hdr, '#include "%s/%s/%s"' % (dp, subdir, fp)
+ print('#include "%s/%s/%s"' % (dp, subdir, fp), file=hdr)
switching_header_action = MakeAction(build_switching_header,
Transform('GENERATE'))
main.AddMethod(switching_headers, 'SwitchingHeaders')
-# all-isas -> all-deps -> all-environs -> all_targets
-main.Alias('#all-isas', [])
-main.Alias('#all-deps', '#all-isas')
-
-# Dummy target to ensure all environments are created before telling
-# SCons what to actually make (the command line arguments). We attach
-# them to the dependence graph after the environments are complete.
-ORIG_BUILD_TARGETS = list(BUILD_TARGETS) # force a copy; gets closure to work.
-def environsComplete(target, source, env):
- for t in ORIG_BUILD_TARGETS:
- main.Depends('#all-targets', t)
-
-# Each build/* switching_dir attaches its *-environs target to #all-environs.
-main.Append(BUILDERS = {'CompleteEnvirons' :
- Builder(action=MakeAction(environsComplete, None))})
-main.CompleteEnvirons('#all-environs', [])
-
-def doNothing(**ignored): pass
-main.Append(BUILDERS = {'Dummy': Builder(action=MakeAction(doNothing, None))})
-
-# The final target to which all the original targets ultimately get attached.
-main.Dummy('#all-targets', '#all-environs')
-BUILD_TARGETS[:] = ['#all-targets']
-
###################################################
#
# Define build environments for selected configurations.
#
###################################################
-def variant_name(path):
- return os.path.basename(path).lower().replace('_', '-')
-main['variant_name'] = variant_name
-main['VARIANT_NAME'] = '${variant_name(BUILDDIR)}'
-
for variant_path in variant_paths:
if not GetOption('silent'):
- print "Building in", variant_path
+ print("Building in", variant_path)
# Make a copy of the build-root environment to use for this config.
env = main.Clone()
env['BUILDDIR'] = variant_path
# variant_dir is the tail component of build path, and is used to
- # determine the build parameters (e.g., 'ALPHA_SE')
+ # determine the build parameters (e.g., 'X86')
(build_root, variant_dir) = splitpath(variant_path)
# Set env variables according to the build directory config.
if isfile(current_vars_file):
sticky_vars.files.append(current_vars_file)
if not GetOption('silent'):
- print "Using saved variables file %s" % current_vars_file
+ print("Using saved variables file %s" % current_vars_file)
elif variant_dir in ext_build_dirs:
# Things in ext are built without a variant directory.
continue
joinpath(opts_dir, default)]
else:
default_vars_files = [joinpath(opts_dir, variant_dir)]
- existing_files = filter(isfile, default_vars_files)
+ existing_files = list(filter(isfile, default_vars_files))
if existing_files:
default_vars_file = existing_files[0]
sticky_vars.files.append(default_vars_file)
- print "Variables file %s not found,\n using defaults in %s" \
- % (current_vars_file, default_vars_file)
+ print("Variables file %s not found,\n using defaults in %s"
+ % (current_vars_file, default_vars_file))
else:
- print "Error: cannot find variables file %s or " \
- "default file(s) %s" \
- % (current_vars_file, ' or '.join(default_vars_files))
+ error("Cannot find variables file %s or default file(s) %s"
+ % (current_vars_file, ' or '.join(default_vars_files)))
Exit(1)
# Apply current variable settings to env
# Process variable settings.
if not have_fenv and env['USE_FENV']:
- print "Warning: <fenv.h> not available; " \
- "forcing USE_FENV to False in", variant_dir + "."
+ warning("<fenv.h> not available; forcing USE_FENV to False in",
+ variant_dir + ".")
env['USE_FENV'] = False
if not env['USE_FENV']:
- print "Warning: No IEEE FP rounding mode control in", variant_dir + "."
- print " FP results may deviate slightly from other platforms."
+ warning("No IEEE FP rounding mode control in", variant_dir + ".\n"
+ "FP results may deviate slightly from other platforms.")
+
+ if not have_png and env['USE_PNG']:
+ warning("<png.h> not available; forcing USE_PNG to False in",
+ variant_dir + ".")
+ env['USE_PNG'] = False
+
+ if env['USE_PNG']:
+ env.Append(LIBS=['png'])
if env['EFENCE']:
env.Append(LIBS=['efence'])
if env['USE_KVM']:
if not have_kvm:
- print "Warning: Can not enable KVM, host seems to lack KVM support"
+ warning("Can not enable KVM, host seems to lack KVM support")
env['USE_KVM'] = False
elif not is_isa_kvm_compatible(env['TARGET_ISA']):
- print "Info: KVM support disabled due to unsupported host and " \
- "target ISA combination"
+ print("Info: KVM support disabled due to unsupported host and "
+ "target ISA combination")
env['USE_KVM'] = False
if env['USE_TUNTAP']:
if not have_tuntap:
- print "Warning: Can't connect EtherTap with a tap device."
+ warning("Can't connect EtherTap with a tap device.")
env['USE_TUNTAP'] = False
if env['BUILD_GPU']:
# Warn about missing optional functionality
if env['USE_KVM']:
if not main['HAVE_PERF_ATTR_EXCLUDE_HOST']:
- print "Warning: perf_event headers lack support for the " \
- "exclude_host attribute. KVM instruction counts will " \
- "be inaccurate."
+ warning("perf_event headers lack support for the exclude_host "
+ "attribute. KVM instruction counts will be inaccurate.")
# Save sticky variable settings back to current variables file
sticky_vars.Save(current_vars_file, env)
if env['USE_SSE2']:
env.Append(CCFLAGS=['-msse2'])
+ env.Append(CCFLAGS='$CCFLAGS_EXTRA')
+ env.Append(LINKFLAGS='$LDFLAGS_EXTRA')
+
# The src/SConscript file sets up the build rules in 'env' according
# to the configured variables. It returns a list of environments,
# one for each variant build (debug, opt, etc.)
- SConscript('src/SConscript', variant_dir = variant_path, exports = 'env')
-
-def pairwise(iterable):
- "s -> (s0,s1), (s1,s2), (s2, s3), ..."
- a, b = itertools.tee(iterable)
- b.next()
- return itertools.izip(a, b)
-
-variant_names = [variant_name(path) for path in variant_paths]
-
-# Create false dependencies so SCons will parse ISAs, establish
-# dependencies, and setup the build Environments serially. Either
-# SCons (likely) and/or our SConscripts (possibly) cannot cope with -j
-# greater than 1. It appears to be standard race condition stuff; it
-# doesn't always fail, but usually, and the behaviors are different.
-# Every time I tried to remove this, builds would fail in some
-# creative new way. So, don't do that. You'll want to, though, because
-# tests/SConscript takes a long time to make its Environments.
-for t1, t2 in pairwise(sorted(variant_names)):
- main.Depends('#%s-deps' % t2, '#%s-deps' % t1)
- main.Depends('#%s-environs' % t2, '#%s-environs' % t1)
+ SConscript('src/SConscript', variant_dir=variant_path,
+ exports=['env', 'marshal_env'])
# base help text
Help('''
%(local_vars)s
''' % help_texts)
+
+atexit.register(summarize_warnings)
projects / gem5.git / blobdiff