SConstruct revision 12061
1955SN/A# -*- mode:python -*- 2955SN/A 39812Sandreas.hansson@arm.com# Copyright (c) 2013, 2015, 2016 ARM Limited 49812Sandreas.hansson@arm.com# All rights reserved. 59812Sandreas.hansson@arm.com# 69812Sandreas.hansson@arm.com# The license below extends only to copyright in the software and shall 79812Sandreas.hansson@arm.com# not be construed as granting a license to any other intellectual 89812Sandreas.hansson@arm.com# property including but not limited to intellectual property relating 99812Sandreas.hansson@arm.com# to a hardware implementation of the functionality of the software 109812Sandreas.hansson@arm.com# licensed hereunder. You may use the software subject to the license 119812Sandreas.hansson@arm.com# terms below provided that you ensure that this notice is replicated 129812Sandreas.hansson@arm.com# unmodified and in its entirety in all distributions of the software, 139812Sandreas.hansson@arm.com# modified or unmodified, in source code or in binary form. 149812Sandreas.hansson@arm.com# 157816Ssteve.reinhardt@amd.com# Copyright (c) 2011 Advanced Micro Devices, Inc. 165871Snate@binkert.org# Copyright (c) 2009 The Hewlett-Packard Development Company 171762SN/A# Copyright (c) 2004-2005 The Regents of The University of Michigan 18955SN/A# All rights reserved. 19955SN/A# 20955SN/A# Redistribution and use in source and binary forms, with or without 21955SN/A# modification, are permitted provided that the following conditions are 22955SN/A# met: redistributions of source code must retain the above copyright 23955SN/A# notice, this list of conditions and the following disclaimer; 24955SN/A# redistributions in binary form must reproduce the above copyright 25955SN/A# notice, this list of conditions and the following disclaimer in the 26955SN/A# documentation and/or other materials provided with the distribution; 27955SN/A# neither the name of the copyright holders nor the names of its 28955SN/A# contributors may be used to endorse or promote products derived from 29955SN/A# this software without specific prior written permission. 30955SN/A# 31955SN/A# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32955SN/A# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33955SN/A# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 34955SN/A# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35955SN/A# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 36955SN/A# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 37955SN/A# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 38955SN/A# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 39955SN/A# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 40955SN/A# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 41955SN/A# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 422665Ssaidi@eecs.umich.edu# 432665Ssaidi@eecs.umich.edu# Authors: Steve Reinhardt 445863Snate@binkert.org# Nathan Binkert 45955SN/A 46955SN/A################################################### 47955SN/A# 48955SN/A# SCons top-level build description (SConstruct) file. 49955SN/A# 508878Ssteve.reinhardt@amd.com# While in this directory ('gem5'), just type 'scons' to build the default 512632Sstever@eecs.umich.edu# configuration (see below), or type 'scons build/<CONFIG>/<binary>' 528878Ssteve.reinhardt@amd.com# to build some other configuration (e.g., 'build/ALPHA/gem5.opt' for 532632Sstever@eecs.umich.edu# the optimized full-system version). 54955SN/A# 558878Ssteve.reinhardt@amd.com# You can build gem5 in a different directory as long as there is a 562632Sstever@eecs.umich.edu# 'build/<CONFIG>' somewhere along the target path. The build system 572761Sstever@eecs.umich.edu# expects that all configs under the same build directory are being 582632Sstever@eecs.umich.edu# built for the same host system. 592632Sstever@eecs.umich.edu# 602632Sstever@eecs.umich.edu# Examples: 612761Sstever@eecs.umich.edu# 622761Sstever@eecs.umich.edu# The following two commands are equivalent. The '-u' option tells 632761Sstever@eecs.umich.edu# scons to search up the directory tree for this SConstruct file. 648878Ssteve.reinhardt@amd.com# % cd <path-to-src>/gem5 ; scons build/ALPHA/gem5.debug 658878Ssteve.reinhardt@amd.com# % cd <path-to-src>/gem5/build/ALPHA; scons -u gem5.debug 662761Sstever@eecs.umich.edu# 672761Sstever@eecs.umich.edu# The following two commands are equivalent and demonstrate building 682761Sstever@eecs.umich.edu# in a directory outside of the source tree. The '-C' option tells 692761Sstever@eecs.umich.edu# scons to chdir to the specified directory to find this SConstruct 702761Sstever@eecs.umich.edu# file. 718878Ssteve.reinhardt@amd.com# % cd <path-to-src>/gem5 ; scons /local/foo/build/ALPHA/gem5.debug 728878Ssteve.reinhardt@amd.com# % cd /local/foo/build/ALPHA; scons -C <path-to-src>/gem5 gem5.debug 732632Sstever@eecs.umich.edu# 742632Sstever@eecs.umich.edu# You can use 'scons -H' to print scons options. If you're in this 758878Ssteve.reinhardt@amd.com# 'gem5' directory (or use -u or -C to tell scons where to find this 768878Ssteve.reinhardt@amd.com# file), you can use 'scons -h' to print all the gem5-specific build 772632Sstever@eecs.umich.edu# options as well. 78955SN/A# 79955SN/A################################################### 80955SN/A 815863Snate@binkert.org# Check for recent-enough Python and SCons versions. 825863Snate@binkert.orgtry: 835863Snate@binkert.org # Really old versions of scons only take two options for the 845863Snate@binkert.org # function, so check once without the revision and once with the 855863Snate@binkert.org # revision, the first instance will fail for stuff other than 865863Snate@binkert.org # 0.98, and the second will fail for 0.98.0 875863Snate@binkert.org EnsureSConsVersion(0, 98) 885863Snate@binkert.org EnsureSConsVersion(0, 98, 1) 895863Snate@binkert.orgexcept SystemExit, e: 905863Snate@binkert.org print """ 915863Snate@binkert.orgFor more details, see: 928878Ssteve.reinhardt@amd.com http://gem5.org/Dependencies 935863Snate@binkert.org""" 945863Snate@binkert.org raise 955863Snate@binkert.org 969812Sandreas.hansson@arm.com# We ensure the python version early because because python-config 979812Sandreas.hansson@arm.com# requires python 2.5 985863Snate@binkert.orgtry: 999812Sandreas.hansson@arm.com EnsurePythonVersion(2, 5) 1005863Snate@binkert.orgexcept SystemExit, e: 1015863Snate@binkert.org print """ 1025863Snate@binkert.orgYou can use a non-default installation of the Python interpreter by 1039812Sandreas.hansson@arm.comrearranging your PATH so that scons finds the non-default 'python' and 1049812Sandreas.hansson@arm.com'python-config' first. 1055863Snate@binkert.org 1065863Snate@binkert.orgFor more details, see: 1078878Ssteve.reinhardt@amd.com http://gem5.org/wiki/index.php/Using_a_non-default_Python_installation 1085863Snate@binkert.org""" 1095863Snate@binkert.org raise 1105863Snate@binkert.org 1116654Snate@binkert.org# Global Python includes 112955SN/Aimport itertools 1135396Ssaidi@eecs.umich.eduimport os 1145863Snate@binkert.orgimport re 1155863Snate@binkert.orgimport shutil 1164202Sbinkertn@umich.eduimport subprocess 1175863Snate@binkert.orgimport sys 1185863Snate@binkert.org 1195863Snate@binkert.orgfrom os import mkdir, environ 1205863Snate@binkert.orgfrom os.path import abspath, basename, dirname, expanduser, normpath 121955SN/Afrom os.path import exists, isdir, isfile 1226654Snate@binkert.orgfrom os.path import join as joinpath, split as splitpath 1235273Sstever@gmail.com 1245871Snate@binkert.org# SCons includes 1255273Sstever@gmail.comimport SCons 1266655Snate@binkert.orgimport SCons.Node 1278878Ssteve.reinhardt@amd.com 1286655Snate@binkert.orgextra_python_paths = [ 1296655Snate@binkert.org Dir('src/python').srcnode().abspath, # gem5 includes 1309219Spower.jg@gmail.com Dir('ext/ply').srcnode().abspath, # ply is used by several files 1316655Snate@binkert.org ] 1325871Snate@binkert.org 1336654Snate@binkert.orgsys.path[1:1] = extra_python_paths 1348947Sandreas.hansson@arm.com 1355396Ssaidi@eecs.umich.edufrom m5.util import compareVersions, readCommand 1368120Sgblack@eecs.umich.edufrom m5.util.terminal import get_termcap 1378120Sgblack@eecs.umich.edu 1388120Sgblack@eecs.umich.eduhelp_texts = { 1398120Sgblack@eecs.umich.edu "options" : "", 1408120Sgblack@eecs.umich.edu "global_vars" : "", 1418120Sgblack@eecs.umich.edu "local_vars" : "" 1428120Sgblack@eecs.umich.edu} 1438120Sgblack@eecs.umich.edu 1448879Ssteve.reinhardt@amd.comExport("help_texts") 1458879Ssteve.reinhardt@amd.com 1468879Ssteve.reinhardt@amd.com 1478879Ssteve.reinhardt@amd.com# There's a bug in scons in that (1) by default, the help texts from 1488879Ssteve.reinhardt@amd.com# AddOption() are supposed to be displayed when you type 'scons -h' 1498879Ssteve.reinhardt@amd.com# and (2) you can override the help displayed by 'scons -h' using the 1508879Ssteve.reinhardt@amd.com# Help() function, but these two features are incompatible: once 1518879Ssteve.reinhardt@amd.com# you've overridden the help text using Help(), there's no way to get 1528879Ssteve.reinhardt@amd.com# at the help texts from AddOptions. See: 1538879Ssteve.reinhardt@amd.com# http://scons.tigris.org/issues/show_bug.cgi?id=2356 1548879Ssteve.reinhardt@amd.com# http://scons.tigris.org/issues/show_bug.cgi?id=2611 1558879Ssteve.reinhardt@amd.com# This hack lets us extract the help text from AddOptions and 1568879Ssteve.reinhardt@amd.com# re-inject it via Help(). Ideally someday this bug will be fixed and 1578120Sgblack@eecs.umich.edu# we can just use AddOption directly. 1588120Sgblack@eecs.umich.edudef AddLocalOption(*args, **kwargs): 1598120Sgblack@eecs.umich.edu col_width = 30 1608120Sgblack@eecs.umich.edu 1618120Sgblack@eecs.umich.edu help = " " + ", ".join(args) 1628120Sgblack@eecs.umich.edu if "help" in kwargs: 1638120Sgblack@eecs.umich.edu length = len(help) 1648120Sgblack@eecs.umich.edu if length >= col_width: 1658120Sgblack@eecs.umich.edu help += "\n" + " " * col_width 1668120Sgblack@eecs.umich.edu else: 1678120Sgblack@eecs.umich.edu help += " " * (col_width - length) 1688120Sgblack@eecs.umich.edu help += kwargs["help"] 1698120Sgblack@eecs.umich.edu help_texts["options"] += help + "\n" 1708120Sgblack@eecs.umich.edu 1718879Ssteve.reinhardt@amd.com AddOption(*args, **kwargs) 1728879Ssteve.reinhardt@amd.com 1738879Ssteve.reinhardt@amd.comAddLocalOption('--colors', dest='use_colors', action='store_true', 1748879Ssteve.reinhardt@amd.com help="Add color to abbreviated scons output") 1758879Ssteve.reinhardt@amd.comAddLocalOption('--no-colors', dest='use_colors', action='store_false', 1768879Ssteve.reinhardt@amd.com help="Don't add color to abbreviated scons output") 1778879Ssteve.reinhardt@amd.comAddLocalOption('--with-cxx-config', dest='with_cxx_config', 1788879Ssteve.reinhardt@amd.com action='store_true', 1799227Sandreas.hansson@arm.com help="Build with support for C++-based configuration") 1809227Sandreas.hansson@arm.comAddLocalOption('--default', dest='default', type='string', action='store', 1818879Ssteve.reinhardt@amd.com help='Override which build_opts file to use for defaults') 1828879Ssteve.reinhardt@amd.comAddLocalOption('--ignore-style', dest='ignore_style', action='store_true', 1838879Ssteve.reinhardt@amd.com help='Disable style checking hooks') 1848879Ssteve.reinhardt@amd.comAddLocalOption('--no-lto', dest='no_lto', action='store_true', 1858120Sgblack@eecs.umich.edu help='Disable Link-Time Optimization for fast') 1868947Sandreas.hansson@arm.comAddLocalOption('--update-ref', dest='update_ref', action='store_true', 1877816Ssteve.reinhardt@amd.com help='Update test reference outputs') 1885871Snate@binkert.orgAddLocalOption('--verbose', dest='verbose', action='store_true', 1895871Snate@binkert.org help='Print full tool command lines') 1906121Snate@binkert.orgAddLocalOption('--without-python', dest='without_python', 1915871Snate@binkert.org action='store_true', 1925871Snate@binkert.org help='Build without Python configuration support') 1939119Sandreas.hansson@arm.comAddLocalOption('--without-tcmalloc', dest='without_tcmalloc', 1949396Sandreas.hansson@arm.com action='store_true', 1959396Sandreas.hansson@arm.com help='Disable linking against tcmalloc') 196955SN/AAddLocalOption('--with-ubsan', dest='with_ubsan', action='store_true', 1979416SAndreas.Sandberg@ARM.com help='Build with Undefined Behavior Sanitizer if available') 1989416SAndreas.Sandberg@ARM.comAddLocalOption('--with-asan', dest='with_asan', action='store_true', 1999416SAndreas.Sandberg@ARM.com help='Build with Address Sanitizer if available') 2009416SAndreas.Sandberg@ARM.com 2019416SAndreas.Sandberg@ARM.comtermcap = get_termcap(GetOption('use_colors')) 2029416SAndreas.Sandberg@ARM.com 2039416SAndreas.Sandberg@ARM.com######################################################################## 2045871Snate@binkert.org# 2055871Snate@binkert.org# Set up the main build environment. 2069416SAndreas.Sandberg@ARM.com# 2079416SAndreas.Sandberg@ARM.com######################################################################## 2085871Snate@binkert.org 209955SN/A# export TERM so that clang reports errors in color 2106121Snate@binkert.orguse_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 2118881Smarc.orr@gmail.com 'LIBRARY_PATH', 'PATH', 'PKG_CONFIG_PATH', 'PROTOC', 2126121Snate@binkert.org 'PYTHONPATH', 'RANLIB', 'TERM' ]) 2136121Snate@binkert.org 2141533SN/Ause_prefixes = [ 2159239Sandreas.hansson@arm.com "ASAN_", # address sanitizer symbolizer path and settings 2169239Sandreas.hansson@arm.com "CCACHE_", # ccache (caching compiler wrapper) configuration 2179239Sandreas.hansson@arm.com "CCC_", # clang static analyzer configuration 2189239Sandreas.hansson@arm.com "DISTCC_", # distcc (distributed compiler wrapper) configuration 2199239Sandreas.hansson@arm.com "INCLUDE_SERVER_", # distcc pump server settings 2209239Sandreas.hansson@arm.com "M5", # M5 configuration (e.g., path to kernels) 2219239Sandreas.hansson@arm.com ] 2229239Sandreas.hansson@arm.com 2239239Sandreas.hansson@arm.comuse_env = {} 2249239Sandreas.hansson@arm.comfor key,val in sorted(os.environ.iteritems()): 2259239Sandreas.hansson@arm.com if key in use_vars or \ 2269239Sandreas.hansson@arm.com any([key.startswith(prefix) for prefix in use_prefixes]): 2276655Snate@binkert.org use_env[key] = val 2286655Snate@binkert.org 2296655Snate@binkert.org# Tell scons to avoid implicit command dependencies to avoid issues 2306655Snate@binkert.org# with the param wrappes being compiled twice (see 2315871Snate@binkert.org# http://scons.tigris.org/issues/show_bug.cgi?id=2811) 2325871Snate@binkert.orgmain = Environment(ENV=use_env, IMPLICIT_COMMAND_DEPENDENCIES=0) 2335863Snate@binkert.orgmain.Decider('MD5-timestamp') 2345871Snate@binkert.orgmain.root = Dir(".") # The current directory (where this file lives). 2358878Ssteve.reinhardt@amd.commain.srcdir = Dir("src") # The source directory 2365871Snate@binkert.org 2375871Snate@binkert.orgmain_dict_keys = main.Dictionary().keys() 2385871Snate@binkert.org 2395863Snate@binkert.org# Check that we have a C/C++ compiler 2406121Snate@binkert.orgif not ('CC' in main_dict_keys and 'CXX' in main_dict_keys): 2415863Snate@binkert.org print "No C++ compiler installed (package g++ on Ubuntu and RedHat)" 2425871Snate@binkert.org Exit(1) 2438336Ssteve.reinhardt@amd.com 2448336Ssteve.reinhardt@amd.com# add useful python code PYTHONPATH so it can be used by subprocesses 2458336Ssteve.reinhardt@amd.com# as well 2468336Ssteve.reinhardt@amd.commain.AppendENVPath('PYTHONPATH', extra_python_paths) 2474678Snate@binkert.org 2488336Ssteve.reinhardt@amd.com######################################################################## 2498336Ssteve.reinhardt@amd.com# 2508336Ssteve.reinhardt@amd.com# Mercurial Stuff. 2514678Snate@binkert.org# 2524678Snate@binkert.org# If the gem5 directory is a mercurial repository, we should do some 2534678Snate@binkert.org# extra things. 2544678Snate@binkert.org# 2557827Snate@binkert.org######################################################################## 2567827Snate@binkert.org 2578336Ssteve.reinhardt@amd.comhgdir = main.root.Dir(".hg") 2584678Snate@binkert.org 2598336Ssteve.reinhardt@amd.com 2608336Ssteve.reinhardt@amd.comstyle_message = """ 2618336Ssteve.reinhardt@amd.comYou're missing the gem5 style hook, which automatically checks your code 2628336Ssteve.reinhardt@amd.comagainst the gem5 style rules on %s. 2638336Ssteve.reinhardt@amd.comThis script will now install the hook in your %s. 2648336Ssteve.reinhardt@amd.comPress enter to continue, or ctrl-c to abort: """ 2655871Snate@binkert.org 2665871Snate@binkert.orgmercurial_style_message = """ 2678336Ssteve.reinhardt@amd.comYou're missing the gem5 style hook, which automatically checks your code 2688336Ssteve.reinhardt@amd.comagainst the gem5 style rules on hg commit and qrefresh commands. 2698336Ssteve.reinhardt@amd.comThis script will now install the hook in your .hg/hgrc file. 2708336Ssteve.reinhardt@amd.comPress enter to continue, or ctrl-c to abort: """ 2718336Ssteve.reinhardt@amd.com 2725871Snate@binkert.orggit_style_message = """ 2738336Ssteve.reinhardt@amd.comYou're missing the gem5 style or commit message hook. These hooks help 2748336Ssteve.reinhardt@amd.comto ensure that your code follows gem5's style rules on git commit. 2758336Ssteve.reinhardt@amd.comThis script will now install the hook in your .git/hooks/ directory. 2768336Ssteve.reinhardt@amd.comPress enter to continue, or ctrl-c to abort: """ 2778336Ssteve.reinhardt@amd.com 2784678Snate@binkert.orgmercurial_style_upgrade_message = """ 2795871Snate@binkert.orgYour Mercurial style hooks are not up-to-date. This script will now 2804678Snate@binkert.orgtry to automatically update them. A backup of your hgrc will be saved 2818336Ssteve.reinhardt@amd.comin .hg/hgrc.old. 2828336Ssteve.reinhardt@amd.comPress enter to continue, or ctrl-c to abort: """ 2838336Ssteve.reinhardt@amd.com 2848336Ssteve.reinhardt@amd.commercurial_style_hook = """ 2858336Ssteve.reinhardt@amd.com# The following lines were automatically added by gem5/SConstruct 2868336Ssteve.reinhardt@amd.com# to provide the gem5 style-checking hooks 2878336Ssteve.reinhardt@amd.com[extensions] 2888336Ssteve.reinhardt@amd.comhgstyle = %s/util/hgstyle.py 2898336Ssteve.reinhardt@amd.com 2908336Ssteve.reinhardt@amd.com[hooks] 2918336Ssteve.reinhardt@amd.compretxncommit.style = python:hgstyle.check_style 2928336Ssteve.reinhardt@amd.compre-qrefresh.style = python:hgstyle.check_style 2938336Ssteve.reinhardt@amd.com# End of SConstruct additions 2948336Ssteve.reinhardt@amd.com 2958336Ssteve.reinhardt@amd.com""" % (main.root.abspath) 2968336Ssteve.reinhardt@amd.com 2978336Ssteve.reinhardt@amd.commercurial_lib_not_found = """ 2985871Snate@binkert.orgMercurial libraries cannot be found, ignoring style hook. If 2996121Snate@binkert.orgyou are a gem5 developer, please fix this and run the style 300955SN/Ahook. It is important. 301955SN/A""" 3022632Sstever@eecs.umich.edu 3032632Sstever@eecs.umich.edu# Check for style hook and prompt for installation if it's not there. 304955SN/A# Skip this if --ignore-style was specified, there's no interactive 305955SN/A# terminal to prompt, or no recognized revision control system can be 306955SN/A# found. 307955SN/Aignore_style = GetOption('ignore_style') or not sys.stdin.isatty() 3088878Ssteve.reinhardt@amd.com 309955SN/A# Try wire up Mercurial to the style hooks 3102632Sstever@eecs.umich.eduif not ignore_style and hgdir.exists(): 3112632Sstever@eecs.umich.edu style_hook = True 3122632Sstever@eecs.umich.edu style_hooks = tuple() 3132632Sstever@eecs.umich.edu hgrc = hgdir.File('hgrc') 3142632Sstever@eecs.umich.edu hgrc_old = hgdir.File('hgrc.old') 3152632Sstever@eecs.umich.edu try: 3162632Sstever@eecs.umich.edu from mercurial import ui 3178268Ssteve.reinhardt@amd.com ui = ui.ui() 3188268Ssteve.reinhardt@amd.com ui.readconfig(hgrc.abspath) 3198268Ssteve.reinhardt@amd.com style_hooks = (ui.config('hooks', 'pretxncommit.style', None), 3208268Ssteve.reinhardt@amd.com ui.config('hooks', 'pre-qrefresh.style', None)) 3218268Ssteve.reinhardt@amd.com style_hook = all(style_hooks) 3228268Ssteve.reinhardt@amd.com style_extension = ui.config('extensions', 'style', None) 3238268Ssteve.reinhardt@amd.com except ImportError: 3242632Sstever@eecs.umich.edu print mercurial_lib_not_found 3252632Sstever@eecs.umich.edu 3262632Sstever@eecs.umich.edu if "python:style.check_style" in style_hooks: 3272632Sstever@eecs.umich.edu # Try to upgrade the style hooks 3288268Ssteve.reinhardt@amd.com print mercurial_style_upgrade_message 3292632Sstever@eecs.umich.edu # continue unless user does ctrl-c/ctrl-d etc. 3308268Ssteve.reinhardt@amd.com try: 3318268Ssteve.reinhardt@amd.com raw_input() 3328268Ssteve.reinhardt@amd.com except: 3338268Ssteve.reinhardt@amd.com print "Input exception, exiting scons.\n" 3343718Sstever@eecs.umich.edu sys.exit(1) 3352634Sstever@eecs.umich.edu shutil.copyfile(hgrc.abspath, hgrc_old.abspath) 3362634Sstever@eecs.umich.edu re_style_hook = re.compile(r"^([^=#]+)\.style\s*=\s*([^#\s]+).*") 3375863Snate@binkert.org re_style_extension = re.compile("style\s*=\s*([^#\s]+).*") 3382638Sstever@eecs.umich.edu old, new = open(hgrc_old.abspath, 'r'), open(hgrc.abspath, 'w') 3398268Ssteve.reinhardt@amd.com for l in old: 3402632Sstever@eecs.umich.edu m_hook = re_style_hook.match(l) 3412632Sstever@eecs.umich.edu m_ext = re_style_extension.match(l) 3422632Sstever@eecs.umich.edu if m_hook: 3432632Sstever@eecs.umich.edu hook, check = m_hook.groups() 3442632Sstever@eecs.umich.edu if check != "python:style.check_style": 3451858SN/A print "Warning: %s.style is using a non-default " \ 3463716Sstever@eecs.umich.edu "checker: %s" % (hook, check) 3472638Sstever@eecs.umich.edu if hook not in ("pretxncommit", "pre-qrefresh"): 3482638Sstever@eecs.umich.edu print "Warning: Updating unknown style hook: %s" % hook 3492638Sstever@eecs.umich.edu 3502638Sstever@eecs.umich.edu l = "%s.style = python:hgstyle.check_style\n" % hook 3512638Sstever@eecs.umich.edu elif m_ext and m_ext.group(1) == style_extension: 3522638Sstever@eecs.umich.edu l = "hgstyle = %s/util/hgstyle.py\n" % main.root.abspath 3532638Sstever@eecs.umich.edu 3545863Snate@binkert.org new.write(l) 3555863Snate@binkert.org elif not style_hook: 3565863Snate@binkert.org print mercurial_style_message, 357955SN/A # continue unless user does ctrl-c/ctrl-d etc. 3585341Sstever@gmail.com try: 3595341Sstever@gmail.com raw_input() 3605863Snate@binkert.org except: 3617756SAli.Saidi@ARM.com print "Input exception, exiting scons.\n" 3625341Sstever@gmail.com sys.exit(1) 3636121Snate@binkert.org hgrc_path = '%s/.hg/hgrc' % main.root.abspath 3644494Ssaidi@eecs.umich.edu print "Adding style hook to", hgrc_path, "\n" 3656121Snate@binkert.org try: 3661105SN/A with open(hgrc_path, 'a') as f: 3672667Sstever@eecs.umich.edu f.write(mercurial_style_hook) 3682667Sstever@eecs.umich.edu except: 3692667Sstever@eecs.umich.edu print "Error updating", hgrc_path 3702667Sstever@eecs.umich.edu sys.exit(1) 3716121Snate@binkert.org 3722667Sstever@eecs.umich.edudef install_git_style_hooks(): 3735341Sstever@gmail.com try: 3745863Snate@binkert.org gitdir = Dir(readCommand( 3755341Sstever@gmail.com ["git", "rev-parse", "--git-dir"]).strip("\n")) 3765341Sstever@gmail.com except Exception, e: 3775341Sstever@gmail.com print "Warning: Failed to find git repo directory: %s" % e 3788120Sgblack@eecs.umich.edu return 3795341Sstever@gmail.com 3808120Sgblack@eecs.umich.edu git_hooks = gitdir.Dir("hooks") 3815341Sstever@gmail.com def hook_exists(hook_name): 3828120Sgblack@eecs.umich.edu hook = git_hooks.File(hook_name) 3836121Snate@binkert.org return hook.exists() 3846121Snate@binkert.org 3858980Ssteve.reinhardt@amd.com def hook_install(hook_name, script): 3869396Sandreas.hansson@arm.com hook = git_hooks.File(hook_name) 3875397Ssaidi@eecs.umich.edu if hook.exists(): 3885397Ssaidi@eecs.umich.edu print "Warning: Can't install %s, hook already exists." % hook_name 3897727SAli.Saidi@ARM.com return 3908268Ssteve.reinhardt@amd.com 3916168Snate@binkert.org if hook.islink(): 3925341Sstever@gmail.com print "Warning: Removing broken symlink for hook %s." % hook_name 3938120Sgblack@eecs.umich.edu os.unlink(hook.get_abspath()) 3948120Sgblack@eecs.umich.edu 3958120Sgblack@eecs.umich.edu if not git_hooks.exists(): 3966814Sgblack@eecs.umich.edu mkdir(git_hooks.get_abspath()) 3975863Snate@binkert.org git_hooks.clear() 3988120Sgblack@eecs.umich.edu 3995341Sstever@gmail.com abs_symlink_hooks = git_hooks.islink() and \ 4005863Snate@binkert.org os.path.isabs(os.readlink(git_hooks.get_abspath())) 4018268Ssteve.reinhardt@amd.com 4026121Snate@binkert.org # Use a relative symlink if the hooks live in the source directory, 4036121Snate@binkert.org # and the hooks directory is not a symlink to an absolute path. 4048268Ssteve.reinhardt@amd.com if hook.is_under(main.root) and not abs_symlink_hooks: 4055742Snate@binkert.org script_path = os.path.relpath( 4065742Snate@binkert.org os.path.realpath(script.get_abspath()), 4075341Sstever@gmail.com os.path.realpath(hook.Dir(".").get_abspath())) 4085742Snate@binkert.org else: 4095742Snate@binkert.org script_path = script.get_abspath() 4105341Sstever@gmail.com 4116017Snate@binkert.org try: 4126121Snate@binkert.org os.symlink(script_path, hook.get_abspath()) 4136017Snate@binkert.org except: 4147816Ssteve.reinhardt@amd.com print "Error updating git %s hook" % hook_name 4157756SAli.Saidi@ARM.com raise 4167756SAli.Saidi@ARM.com 4177756SAli.Saidi@ARM.com if hook_exists("pre-commit") and hook_exists("commit-msg"): 4187756SAli.Saidi@ARM.com return 4197756SAli.Saidi@ARM.com 4207756SAli.Saidi@ARM.com print git_style_message, 4217756SAli.Saidi@ARM.com try: 4227756SAli.Saidi@ARM.com raw_input() 4237816Ssteve.reinhardt@amd.com except: 4247816Ssteve.reinhardt@amd.com print "Input exception, exiting scons.\n" 4257816Ssteve.reinhardt@amd.com sys.exit(1) 4267816Ssteve.reinhardt@amd.com 4277816Ssteve.reinhardt@amd.com git_style_script = File("util/git-pre-commit.py") 4287816Ssteve.reinhardt@amd.com git_msg_script = File("ext/git-commit-msg") 4297816Ssteve.reinhardt@amd.com 4307816Ssteve.reinhardt@amd.com hook_install("pre-commit", git_style_script) 4317816Ssteve.reinhardt@amd.com hook_install("commit-msg", git_msg_script) 4327816Ssteve.reinhardt@amd.com 4337756SAli.Saidi@ARM.com# Try to wire up git to the style hooks 4347816Ssteve.reinhardt@amd.comif not ignore_style and main.root.Entry(".git").exists(): 4357816Ssteve.reinhardt@amd.com install_git_style_hooks() 4367816Ssteve.reinhardt@amd.com 4377816Ssteve.reinhardt@amd.com################################################### 4387816Ssteve.reinhardt@amd.com# 4397816Ssteve.reinhardt@amd.com# Figure out which configurations to set up based on the path(s) of 4407816Ssteve.reinhardt@amd.com# the target(s). 4417816Ssteve.reinhardt@amd.com# 4427816Ssteve.reinhardt@amd.com################################################### 4437816Ssteve.reinhardt@amd.com 4447816Ssteve.reinhardt@amd.com# Find default configuration & binary. 4457816Ssteve.reinhardt@amd.comDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA/gem5.debug')) 4467816Ssteve.reinhardt@amd.com 4477816Ssteve.reinhardt@amd.com# helper function: find last occurrence of element in list 4487816Ssteve.reinhardt@amd.comdef rfind(l, elt, offs = -1): 4497816Ssteve.reinhardt@amd.com for i in range(len(l)+offs, 0, -1): 4507816Ssteve.reinhardt@amd.com if l[i] == elt: 4517816Ssteve.reinhardt@amd.com return i 4527816Ssteve.reinhardt@amd.com raise ValueError, "element not found" 4537816Ssteve.reinhardt@amd.com 4547816Ssteve.reinhardt@amd.com# Take a list of paths (or SCons Nodes) and return a list with all 4557816Ssteve.reinhardt@amd.com# paths made absolute and ~-expanded. Paths will be interpreted 4567816Ssteve.reinhardt@amd.com# relative to the launch directory unless a different root is provided 4577816Ssteve.reinhardt@amd.comdef makePathListAbsolute(path_list, root=GetLaunchDir()): 4587816Ssteve.reinhardt@amd.com return [abspath(joinpath(root, expanduser(str(p)))) 4597816Ssteve.reinhardt@amd.com for p in path_list] 4607816Ssteve.reinhardt@amd.com 4617816Ssteve.reinhardt@amd.com# Each target must have 'build' in the interior of the path; the 4627816Ssteve.reinhardt@amd.com# directory below this will determine the build parameters. For 4637816Ssteve.reinhardt@amd.com# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 4647816Ssteve.reinhardt@amd.com# recognize that ALPHA_SE specifies the configuration because it 4657816Ssteve.reinhardt@amd.com# follow 'build' in the build path. 4667816Ssteve.reinhardt@amd.com 4677816Ssteve.reinhardt@amd.com# The funky assignment to "[:]" is needed to replace the list contents 4687816Ssteve.reinhardt@amd.com# in place rather than reassign the symbol to a new list, which 4697816Ssteve.reinhardt@amd.com# doesn't work (obviously!). 4707816Ssteve.reinhardt@amd.comBUILD_TARGETS[:] = makePathListAbsolute(BUILD_TARGETS) 4717816Ssteve.reinhardt@amd.com 4727816Ssteve.reinhardt@amd.com# Generate a list of the unique build roots and configs that the 4737816Ssteve.reinhardt@amd.com# collected targets reference. 4747816Ssteve.reinhardt@amd.comvariant_paths = [] 4757816Ssteve.reinhardt@amd.combuild_root = None 4767816Ssteve.reinhardt@amd.comfor t in BUILD_TARGETS: 4777816Ssteve.reinhardt@amd.com path_dirs = t.split('/') 4787816Ssteve.reinhardt@amd.com try: 4797816Ssteve.reinhardt@amd.com build_top = rfind(path_dirs, 'build', -2) 4807816Ssteve.reinhardt@amd.com except: 4817816Ssteve.reinhardt@amd.com print "Error: no non-leaf 'build' dir found on target path", t 4827816Ssteve.reinhardt@amd.com Exit(1) 4837816Ssteve.reinhardt@amd.com this_build_root = joinpath('/',*path_dirs[:build_top+1]) 4847816Ssteve.reinhardt@amd.com if not build_root: 4857816Ssteve.reinhardt@amd.com build_root = this_build_root 4867816Ssteve.reinhardt@amd.com else: 4877816Ssteve.reinhardt@amd.com if this_build_root != build_root: 4887816Ssteve.reinhardt@amd.com print "Error: build targets not under same build root\n"\ 4897816Ssteve.reinhardt@amd.com " %s\n %s" % (build_root, this_build_root) 4907816Ssteve.reinhardt@amd.com Exit(1) 4917816Ssteve.reinhardt@amd.com variant_path = joinpath('/',*path_dirs[:build_top+2]) 4927816Ssteve.reinhardt@amd.com if variant_path not in variant_paths: 4937816Ssteve.reinhardt@amd.com variant_paths.append(variant_path) 4947816Ssteve.reinhardt@amd.com 4958947Sandreas.hansson@arm.com# Make sure build_root exists (might not if this is the first build there) 4968947Sandreas.hansson@arm.comif not isdir(build_root): 4977756SAli.Saidi@ARM.com mkdir(build_root) 4988120Sgblack@eecs.umich.edumain['BUILDROOT'] = build_root 4997756SAli.Saidi@ARM.com 5007756SAli.Saidi@ARM.comExport('main') 5017756SAli.Saidi@ARM.com 5027756SAli.Saidi@ARM.commain.SConsignFile(joinpath(build_root, "sconsign")) 5037816Ssteve.reinhardt@amd.com 5047816Ssteve.reinhardt@amd.com# Default duplicate option is to use hard links, but this messes up 5057816Ssteve.reinhardt@amd.com# when you use emacs to edit a file in the target dir, as emacs moves 5067816Ssteve.reinhardt@amd.com# file to file~ then copies to file, breaking the link. Symbolic 5077816Ssteve.reinhardt@amd.com# (soft) links work better. 5087816Ssteve.reinhardt@amd.commain.SetOption('duplicate', 'soft-copy') 5097816Ssteve.reinhardt@amd.com 5107816Ssteve.reinhardt@amd.com# 5117816Ssteve.reinhardt@amd.com# Set up global sticky variables... these are common to an entire build 5127816Ssteve.reinhardt@amd.com# tree (not specific to a particular build like ALPHA_SE) 5137756SAli.Saidi@ARM.com# 5147756SAli.Saidi@ARM.com 5159227Sandreas.hansson@arm.comglobal_vars_file = joinpath(build_root, 'variables.global') 5169227Sandreas.hansson@arm.com 5179227Sandreas.hansson@arm.comglobal_vars = Variables(global_vars_file, args=ARGUMENTS) 5189227Sandreas.hansson@arm.com 5199590Sandreas@sandberg.pp.seglobal_vars.AddVariables( 5209590Sandreas@sandberg.pp.se ('CC', 'C compiler', environ.get('CC', main['CC'])), 5219590Sandreas@sandberg.pp.se ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 5229590Sandreas@sandberg.pp.se ('PROTOC', 'protoc tool', environ.get('PROTOC', 'protoc')), 5239590Sandreas@sandberg.pp.se ('BATCH', 'Use batch pool for build and tests', False), 5249590Sandreas@sandberg.pp.se ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 5256654Snate@binkert.org ('M5_BUILD_CACHE', 'Cache built objects in this directory', False), 5266654Snate@binkert.org ('EXTRAS', 'Add extra directories to the compilation', '') 5275871Snate@binkert.org ) 5286121Snate@binkert.org 5298946Sandreas.hansson@arm.com# Update main environment with values from ARGUMENTS & global_vars_file 5309419Sandreas.hansson@arm.comglobal_vars.Update(main) 5313940Ssaidi@eecs.umich.eduhelp_texts["global_vars"] += global_vars.GenerateHelpText(main) 5323918Ssaidi@eecs.umich.edu 5333918Ssaidi@eecs.umich.edu# Save sticky variable settings back to current variables file 5341858SN/Aglobal_vars.Save(global_vars_file, main) 5359556Sandreas.hansson@arm.com 5369556Sandreas.hansson@arm.com# Parse EXTRAS variable to build list of all directories where we're 5379556Sandreas.hansson@arm.com# look for sources etc. This list is exported as extras_dir_list. 5389556Sandreas.hansson@arm.combase_dir = main.srcdir.abspath 5399556Sandreas.hansson@arm.comif main['EXTRAS']: 5409556Sandreas.hansson@arm.com extras_dir_list = makePathListAbsolute(main['EXTRAS'].split(':')) 5419556Sandreas.hansson@arm.comelse: 5429556Sandreas.hansson@arm.com extras_dir_list = [] 5439556Sandreas.hansson@arm.com 5449556Sandreas.hansson@arm.comExport('base_dir') 5459556Sandreas.hansson@arm.comExport('extras_dir_list') 5469556Sandreas.hansson@arm.com 5479556Sandreas.hansson@arm.com# the ext directory should be on the #includes path 5489556Sandreas.hansson@arm.commain.Append(CPPPATH=[Dir('ext')]) 5499556Sandreas.hansson@arm.com 5509556Sandreas.hansson@arm.comdef strip_build_path(path, env): 5519556Sandreas.hansson@arm.com path = str(path) 5529556Sandreas.hansson@arm.com variant_base = env['BUILDROOT'] + os.path.sep 5539556Sandreas.hansson@arm.com if path.startswith(variant_base): 5549556Sandreas.hansson@arm.com path = path[len(variant_base):] 5559556Sandreas.hansson@arm.com elif path.startswith('build/'): 5569556Sandreas.hansson@arm.com path = path[6:] 5579556Sandreas.hansson@arm.com return path 5589556Sandreas.hansson@arm.com 5599556Sandreas.hansson@arm.com# Generate a string of the form: 5609556Sandreas.hansson@arm.com# common/path/prefix/src1, src2 -> tgt1, tgt2 5619556Sandreas.hansson@arm.com# to print while building. 5629556Sandreas.hansson@arm.comclass Transform(object): 5639556Sandreas.hansson@arm.com # all specific color settings should be here and nowhere else 5649556Sandreas.hansson@arm.com tool_color = termcap.Normal 5659556Sandreas.hansson@arm.com pfx_color = termcap.Yellow 5669556Sandreas.hansson@arm.com srcs_color = termcap.Yellow + termcap.Bold 5676121Snate@binkert.org arrow_color = termcap.Blue + termcap.Bold 5689420Sandreas.hansson@arm.com tgts_color = termcap.Yellow + termcap.Bold 5699420Sandreas.hansson@arm.com 5709420Sandreas.hansson@arm.com def __init__(self, tool, max_sources=99): 5719420Sandreas.hansson@arm.com self.format = self.tool_color + (" [%8s] " % tool) \ 5729420Sandreas.hansson@arm.com + self.pfx_color + "%s" \ 5739420Sandreas.hansson@arm.com + self.srcs_color + "%s" \ 5749420Sandreas.hansson@arm.com + self.arrow_color + " -> " \ 5759420Sandreas.hansson@arm.com + self.tgts_color + "%s" \ 5769420Sandreas.hansson@arm.com + termcap.Normal 5779420Sandreas.hansson@arm.com self.max_sources = max_sources 5789420Sandreas.hansson@arm.com 5797618SAli.Saidi@arm.com def __call__(self, target, source, env, for_signature=None): 5807618SAli.Saidi@arm.com # truncate source list according to max_sources param 5817618SAli.Saidi@arm.com source = source[0:self.max_sources] 5827739Sgblack@eecs.umich.edu def strip(f): 5839227Sandreas.hansson@arm.com return strip_build_path(str(f), env) 5849227Sandreas.hansson@arm.com if len(source) > 0: 5859227Sandreas.hansson@arm.com srcs = map(strip, source) 5869227Sandreas.hansson@arm.com else: 5879227Sandreas.hansson@arm.com srcs = [''] 5889227Sandreas.hansson@arm.com tgts = map(strip, target) 5899227Sandreas.hansson@arm.com # surprisingly, os.path.commonprefix is a dumb char-by-char string 5909227Sandreas.hansson@arm.com # operation that has nothing to do with paths. 5919227Sandreas.hansson@arm.com com_pfx = os.path.commonprefix(srcs + tgts) 5929227Sandreas.hansson@arm.com com_pfx_len = len(com_pfx) 5939227Sandreas.hansson@arm.com if com_pfx: 5949227Sandreas.hansson@arm.com # do some cleanup and sanity checking on common prefix 5959227Sandreas.hansson@arm.com if com_pfx[-1] == ".": 5969227Sandreas.hansson@arm.com # prefix matches all but file extension: ok 5979227Sandreas.hansson@arm.com # back up one to change 'foo.cc -> o' to 'foo.cc -> .o' 5989227Sandreas.hansson@arm.com com_pfx = com_pfx[0:-1] 5999227Sandreas.hansson@arm.com elif com_pfx[-1] == "/": 6009227Sandreas.hansson@arm.com # common prefix is directory path: OK 6019590Sandreas@sandberg.pp.se pass 6029590Sandreas@sandberg.pp.se else: 6039590Sandreas@sandberg.pp.se src0_len = len(srcs[0]) 6048737Skoansin.tan@gmail.com tgt0_len = len(tgts[0]) 6059420Sandreas.hansson@arm.com if src0_len == com_pfx_len: 6069420Sandreas.hansson@arm.com # source is a substring of target, OK 6079420Sandreas.hansson@arm.com pass 6088737Skoansin.tan@gmail.com elif tgt0_len == com_pfx_len: 6098737Skoansin.tan@gmail.com # target is a substring of source, need to back up to 6108737Skoansin.tan@gmail.com # avoid empty string on RHS of arrow 6118737Skoansin.tan@gmail.com sep_idx = com_pfx.rfind(".") 6128737Skoansin.tan@gmail.com if sep_idx != -1: 6138737Skoansin.tan@gmail.com com_pfx = com_pfx[0:sep_idx] 6148737Skoansin.tan@gmail.com else: 6158737Skoansin.tan@gmail.com com_pfx = '' 6168737Skoansin.tan@gmail.com elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".": 6178737Skoansin.tan@gmail.com # still splitting at file extension: ok 6188737Skoansin.tan@gmail.com pass 6198737Skoansin.tan@gmail.com else: 6209556Sandreas.hansson@arm.com # probably a fluke; ignore it 6219556Sandreas.hansson@arm.com com_pfx = '' 6229556Sandreas.hansson@arm.com # recalculate length in case com_pfx was modified 6239556Sandreas.hansson@arm.com com_pfx_len = len(com_pfx) 6249556Sandreas.hansson@arm.com def fmt(files): 6259556Sandreas.hansson@arm.com f = map(lambda s: s[com_pfx_len:], files) 6269556Sandreas.hansson@arm.com return ', '.join(f) 6279556Sandreas.hansson@arm.com return self.format % (com_pfx, fmt(srcs), fmt(tgts)) 6289556Sandreas.hansson@arm.com 6299556Sandreas.hansson@arm.comExport('Transform') 6309590Sandreas@sandberg.pp.se 6319590Sandreas@sandberg.pp.se# enable the regression script to use the termcap 6329420Sandreas.hansson@arm.commain['TERMCAP'] = termcap 6339420Sandreas.hansson@arm.com 6349420Sandreas.hansson@arm.comif GetOption('verbose'): 6359420Sandreas.hansson@arm.com def MakeAction(action, string, *args, **kwargs): 6369420Sandreas.hansson@arm.com return Action(action, *args, **kwargs) 6379420Sandreas.hansson@arm.comelse: 6389420Sandreas.hansson@arm.com MakeAction = Action 6399420Sandreas.hansson@arm.com main['CCCOMSTR'] = Transform("CC") 6409420Sandreas.hansson@arm.com main['CXXCOMSTR'] = Transform("CXX") 6419420Sandreas.hansson@arm.com main['ASCOMSTR'] = Transform("AS") 6428946Sandreas.hansson@arm.com main['ARCOMSTR'] = Transform("AR", 0) 6433918Ssaidi@eecs.umich.edu main['LINKCOMSTR'] = Transform("LINK", 0) 6449068SAli.Saidi@ARM.com main['SHLINKCOMSTR'] = Transform("SHLINK", 0) 6459068SAli.Saidi@ARM.com main['RANLIBCOMSTR'] = Transform("RANLIB", 0) 6469068SAli.Saidi@ARM.com main['M4COMSTR'] = Transform("M4") 6479068SAli.Saidi@ARM.com main['SHCCCOMSTR'] = Transform("SHCC") 6489068SAli.Saidi@ARM.com main['SHCXXCOMSTR'] = Transform("SHCXX") 6499068SAli.Saidi@ARM.comExport('MakeAction') 6509068SAli.Saidi@ARM.com 6519068SAli.Saidi@ARM.com# Initialize the Link-Time Optimization (LTO) flags 6529068SAli.Saidi@ARM.commain['LTO_CCFLAGS'] = [] 6539419Sandreas.hansson@arm.commain['LTO_LDFLAGS'] = [] 6549068SAli.Saidi@ARM.com 6559068SAli.Saidi@ARM.com# According to the readme, tcmalloc works best if the compiler doesn't 6569068SAli.Saidi@ARM.com# assume that we're using the builtin malloc and friends. These flags 6579068SAli.Saidi@ARM.com# are compiler-specific, so we need to set them after we detect which 6589068SAli.Saidi@ARM.com# compiler we're using. 6599068SAli.Saidi@ARM.commain['TCMALLOC_CCFLAGS'] = [] 6603918Ssaidi@eecs.umich.edu 6613918Ssaidi@eecs.umich.eduCXX_version = readCommand([main['CXX'],'--version'], exception=False) 6626157Snate@binkert.orgCXX_V = readCommand([main['CXX'],'-V'], exception=False) 6636157Snate@binkert.org 6646157Snate@binkert.orgmain['GCC'] = CXX_version and CXX_version.find('g++') >= 0 6656157Snate@binkert.orgmain['CLANG'] = CXX_version and CXX_version.find('clang') >= 0 6665397Ssaidi@eecs.umich.eduif main['GCC'] + main['CLANG'] > 1: 6675397Ssaidi@eecs.umich.edu print 'Error: How can we have two at the same time?' 6686121Snate@binkert.org Exit(1) 6696121Snate@binkert.org 6706121Snate@binkert.org# Set up default C++ compiler flags 6716121Snate@binkert.orgif main['GCC'] or main['CLANG']: 6726121Snate@binkert.org # As gcc and clang share many flags, do the common parts here 6736121Snate@binkert.org main.Append(CCFLAGS=['-pipe']) 6745397Ssaidi@eecs.umich.edu main.Append(CCFLAGS=['-fno-strict-aliasing']) 6751851SN/A # Enable -Wall and -Wextra and then disable the few warnings that 6761851SN/A # we consistently violate 6777739Sgblack@eecs.umich.edu main.Append(CCFLAGS=['-Wall', '-Wundef', '-Wextra', 678955SN/A '-Wno-sign-compare', '-Wno-unused-parameter']) 6799396Sandreas.hansson@arm.com # We always compile using C++11 6809396Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-std=c++11']) 6819396Sandreas.hansson@arm.com if sys.platform.startswith('freebsd'): 6829396Sandreas.hansson@arm.com main.Append(CCFLAGS=['-I/usr/local/include']) 6839396Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-I/usr/local/include']) 6849396Sandreas.hansson@arm.com 6859396Sandreas.hansson@arm.com main['FILTER_PSHLINKFLAGS'] = lambda x: str(x).replace(' -shared', '') 6869396Sandreas.hansson@arm.com main['PSHLINKFLAGS'] = main.subst('${FILTER_PSHLINKFLAGS(SHLINKFLAGS)}') 6879396Sandreas.hansson@arm.com main['PLINKFLAGS'] = main.subst('${LINKFLAGS}') 6889396Sandreas.hansson@arm.com shared_partial_flags = ['-r', '-nostdlib'] 6899396Sandreas.hansson@arm.com main.Append(PSHLINKFLAGS=shared_partial_flags) 6909396Sandreas.hansson@arm.com main.Append(PLINKFLAGS=shared_partial_flags) 6919396Sandreas.hansson@arm.comelse: 6929396Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 6939396Sandreas.hansson@arm.com print "Don't know what compiler options to use for your compiler." 6949396Sandreas.hansson@arm.com print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 6959477Sandreas.hansson@arm.com print termcap.Yellow + ' version:' + termcap.Normal, 6969477Sandreas.hansson@arm.com if not CXX_version: 6979477Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 6989477Sandreas.hansson@arm.com termcap.Normal 6999477Sandreas.hansson@arm.com else: 7009477Sandreas.hansson@arm.com print CXX_version.replace('\n', '<nl>') 7019477Sandreas.hansson@arm.com print " If you're trying to use a compiler other than GCC" 7029477Sandreas.hansson@arm.com print " or clang, there appears to be something wrong with your" 7039477Sandreas.hansson@arm.com print " environment." 7049477Sandreas.hansson@arm.com print " " 7059477Sandreas.hansson@arm.com print " If you are trying to use a compiler other than those listed" 7069477Sandreas.hansson@arm.com print " above you will need to ease fix SConstruct and " 7079477Sandreas.hansson@arm.com print " src/SConscript to support that compiler." 7089477Sandreas.hansson@arm.com Exit(1) 7099477Sandreas.hansson@arm.com 7109477Sandreas.hansson@arm.comif main['GCC']: 7119477Sandreas.hansson@arm.com # Check for a supported version of gcc. >= 4.8 is chosen for its 7129477Sandreas.hansson@arm.com # level of c++11 support. See 7139477Sandreas.hansson@arm.com # http://gcc.gnu.org/projects/cxx0x.html for details. 7149477Sandreas.hansson@arm.com gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 7159477Sandreas.hansson@arm.com if compareVersions(gcc_version, "4.8") < 0: 7169477Sandreas.hansson@arm.com print 'Error: gcc version 4.8 or newer required.' 7179396Sandreas.hansson@arm.com print ' Installed version:', gcc_version 7183053Sstever@eecs.umich.edu Exit(1) 7196121Snate@binkert.org 7203053Sstever@eecs.umich.edu main['GCC_VERSION'] = gcc_version 7213053Sstever@eecs.umich.edu 7223053Sstever@eecs.umich.edu # gcc from version 4.8 and above generates "rep; ret" instructions 7233053Sstever@eecs.umich.edu # to avoid performance penalties on certain AMD chips. Older 7243053Sstever@eecs.umich.edu # assemblers detect this as an error, "Error: expecting string 7259072Sandreas.hansson@arm.com # instruction after `rep'" 7263053Sstever@eecs.umich.edu as_version_raw = readCommand([main['AS'], '-v', '/dev/null', 7274742Sstever@eecs.umich.edu '-o', '/dev/null'], 7284742Sstever@eecs.umich.edu exception=False).split() 7293053Sstever@eecs.umich.edu 7303053Sstever@eecs.umich.edu # version strings may contain extra distro-specific 7313053Sstever@eecs.umich.edu # qualifiers, so play it safe and keep only what comes before 7328960Ssteve.reinhardt@amd.com # the first hyphen 7336654Snate@binkert.org as_version = as_version_raw[-1].split('-')[0] if as_version_raw else None 7343053Sstever@eecs.umich.edu 7353053Sstever@eecs.umich.edu if not as_version or compareVersions(as_version, "2.23") < 0: 7363053Sstever@eecs.umich.edu print termcap.Yellow + termcap.Bold + \ 7373053Sstever@eecs.umich.edu 'Warning: This combination of gcc and binutils have' + \ 7389740SAli.Saidi@ARM.com ' known incompatibilities.\n' + \ 7399585Sandreas@sandberg.pp.se ' If you encounter build problems, please update ' + \ 7409740SAli.Saidi@ARM.com 'binutils to 2.23.' + \ 7419585Sandreas@sandberg.pp.se termcap.Normal 7429585Sandreas@sandberg.pp.se 7439585Sandreas@sandberg.pp.se # Make sure we warn if the user has requested to compile with the 7449585Sandreas@sandberg.pp.se # Undefined Benahvior Sanitizer and this version of gcc does not 7459585Sandreas@sandberg.pp.se # support it. 7469585Sandreas@sandberg.pp.se if GetOption('with_ubsan') and \ 7472667Sstever@eecs.umich.edu compareVersions(gcc_version, '4.9') < 0: 7484554Sbinkertn@umich.edu print termcap.Yellow + termcap.Bold + \ 7496121Snate@binkert.org 'Warning: UBSan is only supported using gcc 4.9 and later.' + \ 7502667Sstever@eecs.umich.edu termcap.Normal 7514554Sbinkertn@umich.edu 7524554Sbinkertn@umich.edu # Add the appropriate Link-Time Optimization (LTO) flags 7534554Sbinkertn@umich.edu # unless LTO is explicitly turned off. Note that these flags 7546121Snate@binkert.org # are only used by the fast target. 7554554Sbinkertn@umich.edu if not GetOption('no_lto'): 7564554Sbinkertn@umich.edu # Pass the LTO flag when compiling to produce GIMPLE 7574554Sbinkertn@umich.edu # output, we merely create the flags here and only append 7584781Snate@binkert.org # them later 7594554Sbinkertn@umich.edu main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 7604554Sbinkertn@umich.edu 7612667Sstever@eecs.umich.edu # Use the same amount of jobs for LTO as we are running 7624554Sbinkertn@umich.edu # scons with 7634554Sbinkertn@umich.edu main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 7644554Sbinkertn@umich.edu 7654554Sbinkertn@umich.edu main.Append(TCMALLOC_CCFLAGS=['-fno-builtin-malloc', '-fno-builtin-calloc', 7662667Sstever@eecs.umich.edu '-fno-builtin-realloc', '-fno-builtin-free']) 7674554Sbinkertn@umich.edu 7682667Sstever@eecs.umich.edu # add option to check for undeclared overrides 7694554Sbinkertn@umich.edu if compareVersions(gcc_version, "5.0") > 0: 7706121Snate@binkert.org main.Append(CCFLAGS=['-Wno-error=suggest-override']) 7712667Sstever@eecs.umich.edu 7725522Snate@binkert.orgelif main['CLANG']: 7735522Snate@binkert.org # Check for a supported version of clang, >= 3.1 is needed to 7745522Snate@binkert.org # support similar features as gcc 4.8. See 7755522Snate@binkert.org # http://clang.llvm.org/cxx_status.html for details 7765522Snate@binkert.org clang_version_re = re.compile(".* version (\d+\.\d+)") 7775522Snate@binkert.org clang_version_match = clang_version_re.search(CXX_version) 7785522Snate@binkert.org if (clang_version_match): 7795522Snate@binkert.org clang_version = clang_version_match.groups()[0] 7805522Snate@binkert.org if compareVersions(clang_version, "3.1") < 0: 7815522Snate@binkert.org print 'Error: clang version 3.1 or newer required.' 7825522Snate@binkert.org print ' Installed version:', clang_version 7835522Snate@binkert.org Exit(1) 7845522Snate@binkert.org else: 7855522Snate@binkert.org print 'Error: Unable to determine clang version.' 7865522Snate@binkert.org Exit(1) 7875522Snate@binkert.org 7885522Snate@binkert.org # clang has a few additional warnings that we disable, extraneous 7895522Snate@binkert.org # parantheses are allowed due to Ruby's printing of the AST, 7905522Snate@binkert.org # finally self assignments are allowed as the generated CPU code 7915522Snate@binkert.org # is relying on this 7925522Snate@binkert.org main.Append(CCFLAGS=['-Wno-parentheses', 7935522Snate@binkert.org '-Wno-self-assign', 7945522Snate@binkert.org # Some versions of libstdc++ (4.8?) seem to 7955522Snate@binkert.org # use struct hash and class hash 7965522Snate@binkert.org # interchangeably. 7975522Snate@binkert.org '-Wno-mismatched-tags', 7982638Sstever@eecs.umich.edu ]) 7992638Sstever@eecs.umich.edu 8006121Snate@binkert.org main.Append(TCMALLOC_CCFLAGS=['-fno-builtin']) 8013716Sstever@eecs.umich.edu 8025522Snate@binkert.org # On Mac OS X/Darwin we need to also use libc++ (part of XCode) as 8039420Sandreas.hansson@arm.com # opposed to libstdc++, as the later is dated. 8045522Snate@binkert.org if sys.platform == "darwin": 8055522Snate@binkert.org main.Append(CXXFLAGS=['-stdlib=libc++']) 8065522Snate@binkert.org main.Append(LIBS=['c++']) 8075522Snate@binkert.org 8081858SN/A # On FreeBSD we need libthr. 8095227Ssaidi@eecs.umich.edu if sys.platform.startswith('freebsd'): 8105227Ssaidi@eecs.umich.edu main.Append(LIBS=['thr']) 8115227Ssaidi@eecs.umich.edu 8125227Ssaidi@eecs.umich.eduelse: 8136654Snate@binkert.org print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 8146654Snate@binkert.org print "Don't know what compiler options to use for your compiler." 8157769SAli.Saidi@ARM.com print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 8167769SAli.Saidi@ARM.com print termcap.Yellow + ' version:' + termcap.Normal, 8177769SAli.Saidi@ARM.com if not CXX_version: 8187769SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 8195227Ssaidi@eecs.umich.edu termcap.Normal 8205227Ssaidi@eecs.umich.edu else: 8215227Ssaidi@eecs.umich.edu print CXX_version.replace('\n', '<nl>') 8225204Sstever@gmail.com print " If you're trying to use a compiler other than GCC" 8235204Sstever@gmail.com print " or clang, there appears to be something wrong with your" 8245204Sstever@gmail.com print " environment." 8255204Sstever@gmail.com print " " 8265204Sstever@gmail.com print " If you are trying to use a compiler other than those listed" 8275204Sstever@gmail.com print " above you will need to ease fix SConstruct and " 8285204Sstever@gmail.com print " src/SConscript to support that compiler." 8295204Sstever@gmail.com Exit(1) 8305204Sstever@gmail.com 8315204Sstever@gmail.com# Set up common yacc/bison flags (needed for Ruby) 8325204Sstever@gmail.commain['YACCFLAGS'] = '-d' 8335204Sstever@gmail.commain['YACCHXXFILESUFFIX'] = '.hh' 8345204Sstever@gmail.com 8355204Sstever@gmail.com# Do this after we save setting back, or else we'll tack on an 8365204Sstever@gmail.com# extra 'qdo' every time we run scons. 8375204Sstever@gmail.comif main['BATCH']: 8385204Sstever@gmail.com main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 8396121Snate@binkert.org main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 8405204Sstever@gmail.com main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 8417727SAli.Saidi@ARM.com main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 8427727SAli.Saidi@ARM.com main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 8437727SAli.Saidi@ARM.com 8447727SAli.Saidi@ARM.comif sys.platform == 'cygwin': 8457727SAli.Saidi@ARM.com # cygwin has some header file issues... 8469812Sandreas.hansson@arm.com main.Append(CCFLAGS=["-Wno-uninitialized"]) 8479812Sandreas.hansson@arm.com 8489812Sandreas.hansson@arm.com# Check for the protobuf compiler 8499812Sandreas.hansson@arm.comprotoc_version = readCommand([main['PROTOC'], '--version'], 8509812Sandreas.hansson@arm.com exception='').split() 8519812Sandreas.hansson@arm.com 8529812Sandreas.hansson@arm.com# First two words should be "libprotoc x.y.z" 8539812Sandreas.hansson@arm.comif len(protoc_version) < 2 or protoc_version[0] != 'libprotoc': 8549812Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 8559812Sandreas.hansson@arm.com 'Warning: Protocol buffer compiler (protoc) not found.\n' + \ 8569812Sandreas.hansson@arm.com ' Please install protobuf-compiler for tracing support.' + \ 8579812Sandreas.hansson@arm.com termcap.Normal 8589812Sandreas.hansson@arm.com main['PROTOC'] = False 8599812Sandreas.hansson@arm.comelse: 8609812Sandreas.hansson@arm.com # Based on the availability of the compress stream wrappers, 8619812Sandreas.hansson@arm.com # require 2.1.0 8629812Sandreas.hansson@arm.com min_protoc_version = '2.1.0' 8639812Sandreas.hansson@arm.com if compareVersions(protoc_version[1], min_protoc_version) < 0: 8649812Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 8659812Sandreas.hansson@arm.com 'Warning: protoc version', min_protoc_version, \ 8669812Sandreas.hansson@arm.com 'or newer required.\n' + \ 8679812Sandreas.hansson@arm.com ' Installed version:', protoc_version[1], \ 8689812Sandreas.hansson@arm.com termcap.Normal 8699812Sandreas.hansson@arm.com main['PROTOC'] = False 8707727SAli.Saidi@ARM.com else: 8715863Snate@binkert.org # Attempt to determine the appropriate include path and 8723118Sstever@eecs.umich.edu # library path using pkg-config, that means we also need to 8735863Snate@binkert.org # check for pkg-config. Note that it is possible to use 8749239Sandreas.hansson@arm.com # protobuf without the involvement of pkg-config. Later on we 8753118Sstever@eecs.umich.edu # check go a library config check and at that point the test 8763118Sstever@eecs.umich.edu # will fail if libprotobuf cannot be found. 8775863Snate@binkert.org if readCommand(['pkg-config', '--version'], exception=''): 8785863Snate@binkert.org try: 8795863Snate@binkert.org # Attempt to establish what linking flags to add for protobuf 8805863Snate@binkert.org # using pkg-config 8813118Sstever@eecs.umich.edu main.ParseConfig('pkg-config --cflags --libs-only-L protobuf') 8823483Ssaidi@eecs.umich.edu except: 8833494Ssaidi@eecs.umich.edu print termcap.Yellow + termcap.Bold + \ 8843494Ssaidi@eecs.umich.edu 'Warning: pkg-config could not get protobuf flags.' + \ 8853483Ssaidi@eecs.umich.edu termcap.Normal 8863483Ssaidi@eecs.umich.edu 8873483Ssaidi@eecs.umich.edu 8883053Sstever@eecs.umich.edu# Check for 'timeout' from GNU coreutils. If present, regressions will 8893053Sstever@eecs.umich.edu# be run with a time limit. We require version 8.13 since we rely on 8903918Ssaidi@eecs.umich.edu# support for the '--foreground' option. 8913053Sstever@eecs.umich.eduif sys.platform.startswith('freebsd'): 8923053Sstever@eecs.umich.edu timeout_lines = readCommand(['gtimeout', '--version'], 8933053Sstever@eecs.umich.edu exception='').splitlines() 8943053Sstever@eecs.umich.eduelse: 8953053Sstever@eecs.umich.edu timeout_lines = readCommand(['timeout', '--version'], 8969396Sandreas.hansson@arm.com exception='').splitlines() 8979396Sandreas.hansson@arm.com# Get the first line and tokenize it 8989396Sandreas.hansson@arm.comtimeout_version = timeout_lines[0].split() if timeout_lines else [] 8999396Sandreas.hansson@arm.commain['TIMEOUT'] = timeout_version and \ 9009396Sandreas.hansson@arm.com compareVersions(timeout_version[-1], '8.13') >= 0 9019396Sandreas.hansson@arm.com 9029396Sandreas.hansson@arm.com# Add a custom Check function to test for structure members. 9039396Sandreas.hansson@arm.comdef CheckMember(context, include, decl, member, include_quotes="<>"): 9049396Sandreas.hansson@arm.com context.Message("Checking for member %s in %s..." % 9059477Sandreas.hansson@arm.com (member, decl)) 9069396Sandreas.hansson@arm.com text = """ 9079477Sandreas.hansson@arm.com#include %(header)s 9089477Sandreas.hansson@arm.comint main(){ 9099477Sandreas.hansson@arm.com %(decl)s test; 9109477Sandreas.hansson@arm.com (void)test.%(member)s; 9119396Sandreas.hansson@arm.com return 0; 9127840Snate@binkert.org}; 9137865Sgblack@eecs.umich.edu""" % { "header" : include_quotes[0] + include + include_quotes[1], 9147865Sgblack@eecs.umich.edu "decl" : decl, 9157865Sgblack@eecs.umich.edu "member" : member, 9167865Sgblack@eecs.umich.edu } 9177865Sgblack@eecs.umich.edu 9187840Snate@binkert.org ret = context.TryCompile(text, extension=".cc") 9199591Sandreas@sandberg.pp.se context.Result(ret) 9209591Sandreas@sandberg.pp.se return ret 9219591Sandreas@sandberg.pp.se 9229590Sandreas@sandberg.pp.se# Platform-specific configuration. Note again that we assume that all 9239590Sandreas@sandberg.pp.se# builds under a given build root run on the same host platform. 9249045SAli.Saidi@ARM.comconf = Configure(main, 9259045SAli.Saidi@ARM.com conf_dir = joinpath(build_root, '.scons_config'), 9269071Sandreas.hansson@arm.com log_file = joinpath(build_root, 'scons_config.log'), 9279071Sandreas.hansson@arm.com custom_tests = { 9289045SAli.Saidi@ARM.com 'CheckMember' : CheckMember, 9297840Snate@binkert.org }) 9307840Snate@binkert.org 9317840Snate@binkert.org# Check if we should compile a 64 bit binary on Mac OS X/Darwin 9321858SN/Atry: 9331858SN/A import platform 9341858SN/A uname = platform.uname() 9351858SN/A if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0: 9361858SN/A if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]): 9371858SN/A main.Append(CCFLAGS=['-arch', 'x86_64']) 9389651SAndreas.Sandberg@ARM.com main.Append(CFLAGS=['-arch', 'x86_64']) 9399651SAndreas.Sandberg@ARM.com main.Append(LINKFLAGS=['-arch', 'x86_64']) 9409651SAndreas.Sandberg@ARM.com main.Append(ASFLAGS=['-arch', 'x86_64']) 9419651SAndreas.Sandberg@ARM.comexcept: 9429651SAndreas.Sandberg@ARM.com pass 9439651SAndreas.Sandberg@ARM.com 9449651SAndreas.Sandberg@ARM.com# Recent versions of scons substitute a "Null" object for Configure() 9459651SAndreas.Sandberg@ARM.com# when configuration isn't necessary, e.g., if the "--help" option is 9469651SAndreas.Sandberg@ARM.com# present. Unfortuantely this Null object always returns false, 9479657Sandreas.sandberg@arm.com# breaking all our configuration checks. We replace it with our own 9489651SAndreas.Sandberg@ARM.com# more optimistic null object that returns True instead. 9499651SAndreas.Sandberg@ARM.comif not conf: 9509651SAndreas.Sandberg@ARM.com def NullCheck(*args, **kwargs): 9519651SAndreas.Sandberg@ARM.com return True 9529651SAndreas.Sandberg@ARM.com 9539651SAndreas.Sandberg@ARM.com class NullConf: 9549651SAndreas.Sandberg@ARM.com def __init__(self, env): 9559651SAndreas.Sandberg@ARM.com self.env = env 9569651SAndreas.Sandberg@ARM.com def Finish(self): 9579651SAndreas.Sandberg@ARM.com return self.env 9589651SAndreas.Sandberg@ARM.com def __getattr__(self, mname): 9595863Snate@binkert.org return NullCheck 9605863Snate@binkert.org 9615863Snate@binkert.org conf = NullConf(main) 9625863Snate@binkert.org 9636121Snate@binkert.org# Cache build files in the supplied directory. 9641858SN/Aif main['M5_BUILD_CACHE']: 9655863Snate@binkert.org print 'Using build cache located at', main['M5_BUILD_CACHE'] 9665863Snate@binkert.org CacheDir(main['M5_BUILD_CACHE']) 9675863Snate@binkert.org 9685863Snate@binkert.orgmain['USE_PYTHON'] = not GetOption('without_python') 9695863Snate@binkert.orgif main['USE_PYTHON']: 9702139SN/A # Find Python include and library directories for embedding the 9714202Sbinkertn@umich.edu # interpreter. We rely on python-config to resolve the appropriate 9724202Sbinkertn@umich.edu # includes and linker flags. ParseConfig does not seem to understand 9732139SN/A # the more exotic linker flags such as -Xlinker and -export-dynamic so 9746994Snate@binkert.org # we add them explicitly below. If you want to link in an alternate 9756994Snate@binkert.org # version of python, see above for instructions on how to invoke 9766994Snate@binkert.org # scons with the appropriate PATH set. 9776994Snate@binkert.org # 9786994Snate@binkert.org # First we check if python2-config exists, else we use python-config 9796994Snate@binkert.org python_config = readCommand(['which', 'python2-config'], 9806994Snate@binkert.org exception='').strip() 9816994Snate@binkert.org if not os.path.exists(python_config): 9826994Snate@binkert.org python_config = readCommand(['which', 'python-config'], 9836994Snate@binkert.org exception='').strip() 9846994Snate@binkert.org py_includes = readCommand([python_config, '--includes'], 9856994Snate@binkert.org exception='').split() 9866994Snate@binkert.org # Strip the -I from the include folders before adding them to the 9876994Snate@binkert.org # CPPPATH 9886994Snate@binkert.org main.Append(CPPPATH=map(lambda inc: inc[2:], py_includes)) 9896994Snate@binkert.org 9906994Snate@binkert.org # Read the linker flags and split them into libraries and other link 9916994Snate@binkert.org # flags. The libraries are added later through the call the CheckLib. 9926994Snate@binkert.org py_ld_flags = readCommand([python_config, '--ldflags'], 9936994Snate@binkert.org exception='').split() 9946994Snate@binkert.org py_libs = [] 9956994Snate@binkert.org for lib in py_ld_flags: 9966994Snate@binkert.org if not lib.startswith('-l'): 9976994Snate@binkert.org main.Append(LINKFLAGS=[lib]) 9986994Snate@binkert.org else: 9996994Snate@binkert.org lib = lib[2:] 10006994Snate@binkert.org if lib not in py_libs: 10016994Snate@binkert.org py_libs.append(lib) 10022155SN/A 10035863Snate@binkert.org # verify that this stuff works 10041869SN/A if not conf.CheckHeader('Python.h', '<>'): 10051869SN/A print "Error: can't find Python.h header in", py_includes 10065863Snate@binkert.org print "Install Python headers (package python-dev on Ubuntu and RedHat)" 10075863Snate@binkert.org Exit(1) 10084202Sbinkertn@umich.edu 10096108Snate@binkert.org for lib in py_libs: 10106108Snate@binkert.org if not conf.CheckLib(lib): 10116108Snate@binkert.org print "Error: can't find library %s required by python" % lib 10126108Snate@binkert.org Exit(1) 10139219Spower.jg@gmail.com 10149219Spower.jg@gmail.com# On Solaris you need to use libsocket for socket ops 10159219Spower.jg@gmail.comif not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 10169219Spower.jg@gmail.com if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 10179219Spower.jg@gmail.com print "Can't find library with socket calls (e.g. accept())" 10189219Spower.jg@gmail.com Exit(1) 10199219Spower.jg@gmail.com 10209219Spower.jg@gmail.com# Check for zlib. If the check passes, libz will be automatically 10214202Sbinkertn@umich.edu# added to the LIBS environment variable. 10225863Snate@binkert.orgif not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 10238474Sgblack@eecs.umich.edu print 'Error: did not find needed zlib compression library '\ 10248474Sgblack@eecs.umich.edu 'and/or zlib.h header file.' 10255742Snate@binkert.org print ' Please install zlib and try again.' 10268268Ssteve.reinhardt@amd.com Exit(1) 10278268Ssteve.reinhardt@amd.com 10288268Ssteve.reinhardt@amd.com# If we have the protobuf compiler, also make sure we have the 10295742Snate@binkert.org# development libraries. If the check passes, libprotobuf will be 10305341Sstever@gmail.com# automatically added to the LIBS environment variable. After 10318474Sgblack@eecs.umich.edu# this, we can use the HAVE_PROTOBUF flag to determine if we have 10328474Sgblack@eecs.umich.edu# got both protoc and libprotobuf available. 10335342Sstever@gmail.commain['HAVE_PROTOBUF'] = main['PROTOC'] and \ 10344202Sbinkertn@umich.edu conf.CheckLibWithHeader('protobuf', 'google/protobuf/message.h', 10354202Sbinkertn@umich.edu 'C++', 'GOOGLE_PROTOBUF_VERIFY_VERSION;') 10364202Sbinkertn@umich.edu 10375863Snate@binkert.org# If we have the compiler but not the library, print another warning. 10385863Snate@binkert.orgif main['PROTOC'] and not main['HAVE_PROTOBUF']: 10396994Snate@binkert.org print termcap.Yellow + termcap.Bold + \ 10406994Snate@binkert.org 'Warning: did not find protocol buffer library and/or headers.\n' + \ 10416994Snate@binkert.org ' Please install libprotobuf-dev for tracing support.' + \ 10425863Snate@binkert.org termcap.Normal 10435863Snate@binkert.org 10445863Snate@binkert.org# Check for librt. 10455863Snate@binkert.orghave_posix_clock = \ 10465863Snate@binkert.org conf.CheckLibWithHeader(None, 'time.h', 'C', 10475863Snate@binkert.org 'clock_nanosleep(0,0,NULL,NULL);') or \ 10485863Snate@binkert.org conf.CheckLibWithHeader('rt', 'time.h', 'C', 10495863Snate@binkert.org 'clock_nanosleep(0,0,NULL,NULL);') 10507840Snate@binkert.org 10515863Snate@binkert.orghave_posix_timers = \ 10525952Ssaidi@eecs.umich.edu conf.CheckLibWithHeader([None, 'rt'], [ 'time.h', 'signal.h' ], 'C', 10539651SAndreas.Sandberg@ARM.com 'timer_create(CLOCK_MONOTONIC, NULL, NULL);') 10549219Spower.jg@gmail.com 10559219Spower.jg@gmail.comif not GetOption('without_tcmalloc'): 10561869SN/A if conf.CheckLib('tcmalloc'): 10571858SN/A main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 10585863Snate@binkert.org elif conf.CheckLib('tcmalloc_minimal'): 10599420Sandreas.hansson@arm.com main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 10609420Sandreas.hansson@arm.com else: 10611858SN/A print termcap.Yellow + termcap.Bold + \ 1062955SN/A "You can get a 12% performance improvement by "\ 1063955SN/A "installing tcmalloc (libgoogle-perftools-dev package "\ 10641869SN/A "on Ubuntu or RedHat)." + termcap.Normal 10651869SN/A 10661869SN/A 10671869SN/A# Detect back trace implementations. The last implementation in the 10681869SN/A# list will be used by default. 10695863Snate@binkert.orgbacktrace_impls = [ "none" ] 10705863Snate@binkert.org 10715863Snate@binkert.orgif conf.CheckLibWithHeader(None, 'execinfo.h', 'C', 10721869SN/A 'backtrace_symbols_fd((void*)0, 0, 0);'): 10735863Snate@binkert.org backtrace_impls.append("glibc") 10741869SN/Aelif conf.CheckLibWithHeader('execinfo', 'execinfo.h', 'C', 10755863Snate@binkert.org 'backtrace_symbols_fd((void*)0, 0, 0);'): 10761869SN/A # NetBSD and FreeBSD need libexecinfo. 10771869SN/A backtrace_impls.append("glibc") 10781869SN/A main.Append(LIBS=['execinfo']) 10791869SN/A 10808483Sgblack@eecs.umich.eduif backtrace_impls[-1] == "none": 10811869SN/A default_backtrace_impl = "none" 10821869SN/A print termcap.Yellow + termcap.Bold + \ 10831869SN/A "No suitable back trace implementation found." + \ 10841869SN/A termcap.Normal 10855863Snate@binkert.org 10865863Snate@binkert.orgif not have_posix_clock: 10871869SN/A print "Can't find library for POSIX clocks." 10885863Snate@binkert.org 10895863Snate@binkert.org# Check for <fenv.h> (C99 FP environment control) 10903356Sbinkertn@umich.eduhave_fenv = conf.CheckHeader('fenv.h', '<>') 10913356Sbinkertn@umich.eduif not have_fenv: 10923356Sbinkertn@umich.edu print "Warning: Header file <fenv.h> not found." 10933356Sbinkertn@umich.edu print " This host has no IEEE FP rounding mode control." 10943356Sbinkertn@umich.edu 10954781Snate@binkert.org# Check if we should enable KVM-based hardware virtualization. The API 10965863Snate@binkert.org# we rely on exists since version 2.6.36 of the kernel, but somehow 10975863Snate@binkert.org# the KVM_API_VERSION does not reflect the change. We test for one of 10981869SN/A# the types as a fall back. 10991869SN/Ahave_kvm = conf.CheckHeader('linux/kvm.h', '<>') 11001869SN/Aif not have_kvm: 11016121Snate@binkert.org print "Info: Compatible header file <linux/kvm.h> not found, " \ 11021869SN/A "disabling KVM support." 11032638Sstever@eecs.umich.edu 11046121Snate@binkert.org# Check if the TUN/TAP driver is available. 11056121Snate@binkert.orghave_tuntap = conf.CheckHeader('linux/if_tun.h', '<>') 11062638Sstever@eecs.umich.eduif not have_tuntap: 11075749Scws3k@cs.virginia.edu print "Info: Compatible header file <linux/if_tun.h> not found." 11086121Snate@binkert.org 11096121Snate@binkert.org# x86 needs support for xsave. We test for the structure here since we 11105749Scws3k@cs.virginia.edu# won't be able to run new tests by the time we know which ISA we're 11119537Satgutier@umich.edu# targeting. 11129537Satgutier@umich.eduhave_kvm_xsave = conf.CheckTypeSize('struct kvm_xsave', 11139537Satgutier@umich.edu '#include <linux/kvm.h>') != 0 11149537Satgutier@umich.edu 11151869SN/A# Check if the requested target ISA is compatible with the host 11161869SN/Adef is_isa_kvm_compatible(isa): 11173546Sgblack@eecs.umich.edu try: 11183546Sgblack@eecs.umich.edu import platform 11193546Sgblack@eecs.umich.edu host_isa = platform.machine() 11203546Sgblack@eecs.umich.edu except: 11216121Snate@binkert.org print "Warning: Failed to determine host ISA." 11225863Snate@binkert.org return False 11233546Sgblack@eecs.umich.edu 11243546Sgblack@eecs.umich.edu if not have_posix_timers: 11253546Sgblack@eecs.umich.edu print "Warning: Can not enable KVM, host seems to lack support " \ 11263546Sgblack@eecs.umich.edu "for POSIX timers" 11274781Snate@binkert.org return False 11284781Snate@binkert.org 11296658Snate@binkert.org if isa == "arm": 11306658Snate@binkert.org return host_isa in ( "armv7l", "aarch64" ) 11314781Snate@binkert.org elif isa == "x86": 11323546Sgblack@eecs.umich.edu if host_isa != "x86_64": 11333546Sgblack@eecs.umich.edu return False 11343546Sgblack@eecs.umich.edu 11353546Sgblack@eecs.umich.edu if not have_kvm_xsave: 11367756SAli.Saidi@ARM.com print "KVM on x86 requires xsave support in kernel headers." 11377816Ssteve.reinhardt@amd.com return False 11383546Sgblack@eecs.umich.edu 11393546Sgblack@eecs.umich.edu return True 11403546Sgblack@eecs.umich.edu else: 11413546Sgblack@eecs.umich.edu return False 11424202Sbinkertn@umich.edu 11433546Sgblack@eecs.umich.edu 11443546Sgblack@eecs.umich.edu# Check if the exclude_host attribute is available. We want this to 11453546Sgblack@eecs.umich.edu# get accurate instruction counts in KVM. 1146955SN/Amain['HAVE_PERF_ATTR_EXCLUDE_HOST'] = conf.CheckMember( 1147955SN/A 'linux/perf_event.h', 'struct perf_event_attr', 'exclude_host') 1148955SN/A 1149955SN/A 11505863Snate@binkert.org###################################################################### 11515863Snate@binkert.org# 11525343Sstever@gmail.com# Finish the configuration 11535343Sstever@gmail.com# 11546121Snate@binkert.orgmain = conf.Finish() 11555863Snate@binkert.org 11564773Snate@binkert.org###################################################################### 11575863Snate@binkert.org# 11582632Sstever@eecs.umich.edu# Collect all non-global variables 11595863Snate@binkert.org# 11602023SN/A 11615863Snate@binkert.org# Define the universe of supported ISAs 11625863Snate@binkert.orgall_isa_list = [ ] 11635863Snate@binkert.orgall_gpu_isa_list = [ ] 11645863Snate@binkert.orgExport('all_isa_list') 11655863Snate@binkert.orgExport('all_gpu_isa_list') 11665863Snate@binkert.org 11675863Snate@binkert.orgclass CpuModel(object): 11685863Snate@binkert.org '''The CpuModel class encapsulates everything the ISA parser needs to 11695863Snate@binkert.org know about a particular CPU model.''' 11702632Sstever@eecs.umich.edu 11715863Snate@binkert.org # Dict of available CPU model objects. Accessible as CpuModel.dict. 11722023SN/A dict = {} 11732632Sstever@eecs.umich.edu 11745863Snate@binkert.org # Constructor. Automatically adds models to CpuModel.dict. 11755342Sstever@gmail.com def __init__(self, name, default=False): 11765863Snate@binkert.org self.name = name # name of model 11772632Sstever@eecs.umich.edu 11785863Snate@binkert.org # This cpu is enabled by default 11795863Snate@binkert.org self.default = default 11808267Ssteve.reinhardt@amd.com 11818120Sgblack@eecs.umich.edu # Add self to dict 11828267Ssteve.reinhardt@amd.com if name in CpuModel.dict: 11838267Ssteve.reinhardt@amd.com raise AttributeError, "CpuModel '%s' already registered" % name 11848267Ssteve.reinhardt@amd.com CpuModel.dict[name] = self 11858267Ssteve.reinhardt@amd.com 11868267Ssteve.reinhardt@amd.comExport('CpuModel') 11878267Ssteve.reinhardt@amd.com 11888267Ssteve.reinhardt@amd.com# Sticky variables get saved in the variables file so they persist from 11898267Ssteve.reinhardt@amd.com# one invocation to the next (unless overridden, in which case the new 11908267Ssteve.reinhardt@amd.com# value becomes sticky). 11915863Snate@binkert.orgsticky_vars = Variables(args=ARGUMENTS) 11925863Snate@binkert.orgExport('sticky_vars') 11935863Snate@binkert.org 11942632Sstever@eecs.umich.edu# Sticky variables that should be exported 11958267Ssteve.reinhardt@amd.comexport_vars = [] 11968267Ssteve.reinhardt@amd.comExport('export_vars') 11978267Ssteve.reinhardt@amd.com 11982632Sstever@eecs.umich.edu# For Ruby 11991888SN/Aall_protocols = [] 12005863Snate@binkert.orgExport('all_protocols') 12015863Snate@binkert.orgprotocol_dirs = [] 12021858SN/AExport('protocol_dirs') 12038120Sgblack@eecs.umich.eduslicc_includes = [] 12048120Sgblack@eecs.umich.eduExport('slicc_includes') 12057756SAli.Saidi@ARM.com 12062598SN/A# Walk the tree and execute all SConsopts scripts that wil add to the 12075863Snate@binkert.org# above variables 12081858SN/Aif GetOption('verbose'): 12091858SN/A print "Reading SConsopts" 12101858SN/Afor bdir in [ base_dir ] + extras_dir_list: 12115863Snate@binkert.org if not isdir(bdir): 12121858SN/A print "Error: directory '%s' does not exist" % bdir 12131858SN/A Exit(1) 12141858SN/A for root, dirs, files in os.walk(bdir): 12155863Snate@binkert.org if 'SConsopts' in files: 12161871SN/A if GetOption('verbose'): 12171858SN/A print "Reading", joinpath(root, 'SConsopts') 12181858SN/A SConscript(joinpath(root, 'SConsopts')) 12191858SN/A 12201858SN/Aall_isa_list.sort() 12219651SAndreas.Sandberg@ARM.comall_gpu_isa_list.sort() 12229651SAndreas.Sandberg@ARM.com 12239651SAndreas.Sandberg@ARM.comsticky_vars.AddVariables( 12249651SAndreas.Sandberg@ARM.com EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 12259651SAndreas.Sandberg@ARM.com EnumVariable('TARGET_GPU_ISA', 'Target GPU ISA', 'hsail', all_gpu_isa_list), 12269651SAndreas.Sandberg@ARM.com ListVariable('CPU_MODELS', 'CPU models', 12279651SAndreas.Sandberg@ARM.com sorted(n for n,m in CpuModel.dict.iteritems() if m.default), 12289651SAndreas.Sandberg@ARM.com sorted(CpuModel.dict.keys())), 12299651SAndreas.Sandberg@ARM.com BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 12305863Snate@binkert.org False), 12315863Snate@binkert.org BoolVariable('SS_COMPATIBLE_FP', 12321869SN/A 'Make floating-point results compatible with SimpleScalar', 12331965SN/A False), 12347739Sgblack@eecs.umich.edu BoolVariable('USE_SSE2', 12351965SN/A 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 12362761Sstever@eecs.umich.edu False), 12375863Snate@binkert.org BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), 12381869SN/A BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 12395863Snate@binkert.org BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False), 12402667Sstever@eecs.umich.edu BoolVariable('USE_KVM', 'Enable hardware virtualized (KVM) CPU models', have_kvm), 12411869SN/A BoolVariable('USE_TUNTAP', 12421869SN/A 'Enable using a tap device to bridge to the host network', 12432929Sktlim@umich.edu have_tuntap), 12442929Sktlim@umich.edu BoolVariable('BUILD_GPU', 'Build the compute-GPU model', False), 12455863Snate@binkert.org EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None', 12462929Sktlim@umich.edu all_protocols), 1247955SN/A EnumVariable('BACKTRACE_IMPL', 'Post-mortem dump implementation', 12488120Sgblack@eecs.umich.edu backtrace_impls[-1], backtrace_impls) 12498120Sgblack@eecs.umich.edu ) 12508120Sgblack@eecs.umich.edu 12518120Sgblack@eecs.umich.edu# These variables get exported to #defines in config/*.hh (see src/SConscript). 12528120Sgblack@eecs.umich.eduexport_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 'TARGET_ISA', 'TARGET_GPU_ISA', 12538120Sgblack@eecs.umich.edu 'CP_ANNOTATE', 'USE_POSIX_CLOCK', 'USE_KVM', 'USE_TUNTAP', 12548120Sgblack@eecs.umich.edu 'PROTOCOL', 'HAVE_PROTOBUF', 'HAVE_PERF_ATTR_EXCLUDE_HOST'] 12558120Sgblack@eecs.umich.edu 12568120Sgblack@eecs.umich.edu################################################### 12578120Sgblack@eecs.umich.edu# 12588120Sgblack@eecs.umich.edu# Define a SCons builder for configuration flag headers. 12598120Sgblack@eecs.umich.edu# 1260################################################### 1261 1262# This function generates a config header file that #defines the 1263# variable symbol to the current variable setting (0 or 1). The source 1264# operands are the name of the variable and a Value node containing the 1265# value of the variable. 1266def build_config_file(target, source, env): 1267 (variable, value) = [s.get_contents() for s in source] 1268 f = file(str(target[0]), 'w') 1269 print >> f, '#define', variable, value 1270 f.close() 1271 return None 1272 1273# Combine the two functions into a scons Action object. 1274config_action = MakeAction(build_config_file, Transform("CONFIG H", 2)) 1275 1276# The emitter munges the source & target node lists to reflect what 1277# we're really doing. 1278def config_emitter(target, source, env): 1279 # extract variable name from Builder arg 1280 variable = str(target[0]) 1281 # True target is config header file 1282 target = joinpath('config', variable.lower() + '.hh') 1283 val = env[variable] 1284 if isinstance(val, bool): 1285 # Force value to 0/1 1286 val = int(val) 1287 elif isinstance(val, str): 1288 val = '"' + val + '"' 1289 1290 # Sources are variable name & value (packaged in SCons Value nodes) 1291 return ([target], [Value(variable), Value(val)]) 1292 1293config_builder = Builder(emitter = config_emitter, action = config_action) 1294 1295main.Append(BUILDERS = { 'ConfigFile' : config_builder }) 1296 1297################################################### 1298# 1299# Builders for static and shared partially linked object files. 1300# 1301################################################### 1302 1303partial_static_builder = Builder(action=SCons.Defaults.LinkAction, 1304 src_suffix='$OBJSUFFIX', 1305 src_builder=['StaticObject', 'Object'], 1306 LINKFLAGS='$PLINKFLAGS', 1307 LIBS='') 1308 1309def partial_shared_emitter(target, source, env): 1310 for tgt in target: 1311 tgt.attributes.shared = 1 1312 return (target, source) 1313partial_shared_builder = Builder(action=SCons.Defaults.ShLinkAction, 1314 emitter=partial_shared_emitter, 1315 src_suffix='$SHOBJSUFFIX', 1316 src_builder='SharedObject', 1317 SHLINKFLAGS='$PSHLINKFLAGS', 1318 LIBS='') 1319 1320main.Append(BUILDERS = { 'PartialShared' : partial_shared_builder, 1321 'PartialStatic' : partial_static_builder }) 1322 1323# builds in ext are shared across all configs in the build root. 1324ext_dir = abspath(joinpath(str(main.root), 'ext')) 1325ext_build_dirs = [] 1326for root, dirs, files in os.walk(ext_dir): 1327 if 'SConscript' in files: 1328 build_dir = os.path.relpath(root, ext_dir) 1329 ext_build_dirs.append(build_dir) 1330 main.SConscript(joinpath(root, 'SConscript'), 1331 variant_dir=joinpath(build_root, build_dir)) 1332 1333main.Prepend(CPPPATH=Dir('ext/pybind11/include/')) 1334 1335################################################### 1336# 1337# This builder and wrapper method are used to set up a directory with 1338# switching headers. Those are headers which are in a generic location and 1339# that include more specific headers from a directory chosen at build time 1340# based on the current build settings. 1341# 1342################################################### 1343 1344def build_switching_header(target, source, env): 1345 path = str(target[0]) 1346 subdir = str(source[0]) 1347 dp, fp = os.path.split(path) 1348 dp = os.path.relpath(os.path.realpath(dp), 1349 os.path.realpath(env['BUILDDIR'])) 1350 with open(path, 'w') as hdr: 1351 print >>hdr, '#include "%s/%s/%s"' % (dp, subdir, fp) 1352 1353switching_header_action = MakeAction(build_switching_header, 1354 Transform('GENERATE')) 1355 1356switching_header_builder = Builder(action=switching_header_action, 1357 source_factory=Value, 1358 single_source=True) 1359 1360main.Append(BUILDERS = { 'SwitchingHeader': switching_header_builder }) 1361 1362def switching_headers(self, headers, source): 1363 for header in headers: 1364 self.SwitchingHeader(header, source) 1365 1366main.AddMethod(switching_headers, 'SwitchingHeaders') 1367 1368# all-isas -> all-deps -> all-environs -> all_targets 1369main.Alias('#all-isas', []) 1370main.Alias('#all-deps', '#all-isas') 1371 1372# Dummy target to ensure all environments are created before telling 1373# SCons what to actually make (the command line arguments). We attach 1374# them to the dependence graph after the environments are complete. 1375ORIG_BUILD_TARGETS = list(BUILD_TARGETS) # force a copy; gets closure to work. 1376def environsComplete(target, source, env): 1377 for t in ORIG_BUILD_TARGETS: 1378 main.Depends('#all-targets', t) 1379 1380# Each build/* switching_dir attaches its *-environs target to #all-environs. 1381main.Append(BUILDERS = {'CompleteEnvirons' : 1382 Builder(action=MakeAction(environsComplete, None))}) 1383main.CompleteEnvirons('#all-environs', []) 1384 1385def doNothing(**ignored): pass 1386main.Append(BUILDERS = {'Dummy': Builder(action=MakeAction(doNothing, None))}) 1387 1388# The final target to which all the original targets ultimately get attached. 1389main.Dummy('#all-targets', '#all-environs') 1390BUILD_TARGETS[:] = ['#all-targets'] 1391 1392################################################### 1393# 1394# Define build environments for selected configurations. 1395# 1396################################################### 1397 1398def variant_name(path): 1399 return os.path.basename(path).lower().replace('_', '-') 1400main['variant_name'] = variant_name 1401main['VARIANT_NAME'] = '${variant_name(BUILDDIR)}' 1402 1403for variant_path in variant_paths: 1404 if not GetOption('silent'): 1405 print "Building in", variant_path 1406 1407 # Make a copy of the build-root environment to use for this config. 1408 env = main.Clone() 1409 env['BUILDDIR'] = variant_path 1410 1411 # variant_dir is the tail component of build path, and is used to 1412 # determine the build parameters (e.g., 'ALPHA_SE') 1413 (build_root, variant_dir) = splitpath(variant_path) 1414 1415 # Set env variables according to the build directory config. 1416 sticky_vars.files = [] 1417 # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 1418 # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 1419 # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 1420 current_vars_file = joinpath(build_root, 'variables', variant_dir) 1421 if isfile(current_vars_file): 1422 sticky_vars.files.append(current_vars_file) 1423 if not GetOption('silent'): 1424 print "Using saved variables file %s" % current_vars_file 1425 elif variant_dir in ext_build_dirs: 1426 # Things in ext are built without a variant directory. 1427 continue 1428 else: 1429 # Build dir-specific variables file doesn't exist. 1430 1431 # Make sure the directory is there so we can create it later 1432 opt_dir = dirname(current_vars_file) 1433 if not isdir(opt_dir): 1434 mkdir(opt_dir) 1435 1436 # Get default build variables from source tree. Variables are 1437 # normally determined by name of $VARIANT_DIR, but can be 1438 # overridden by '--default=' arg on command line. 1439 default = GetOption('default') 1440 opts_dir = joinpath(main.root.abspath, 'build_opts') 1441 if default: 1442 default_vars_files = [joinpath(build_root, 'variables', default), 1443 joinpath(opts_dir, default)] 1444 else: 1445 default_vars_files = [joinpath(opts_dir, variant_dir)] 1446 existing_files = filter(isfile, default_vars_files) 1447 if existing_files: 1448 default_vars_file = existing_files[0] 1449 sticky_vars.files.append(default_vars_file) 1450 print "Variables file %s not found,\n using defaults in %s" \ 1451 % (current_vars_file, default_vars_file) 1452 else: 1453 print "Error: cannot find variables file %s or " \ 1454 "default file(s) %s" \ 1455 % (current_vars_file, ' or '.join(default_vars_files)) 1456 Exit(1) 1457 1458 # Apply current variable settings to env 1459 sticky_vars.Update(env) 1460 1461 help_texts["local_vars"] += \ 1462 "Build variables for %s:\n" % variant_dir \ 1463 + sticky_vars.GenerateHelpText(env) 1464 1465 # Process variable settings. 1466 1467 if not have_fenv and env['USE_FENV']: 1468 print "Warning: <fenv.h> not available; " \ 1469 "forcing USE_FENV to False in", variant_dir + "." 1470 env['USE_FENV'] = False 1471 1472 if not env['USE_FENV']: 1473 print "Warning: No IEEE FP rounding mode control in", variant_dir + "." 1474 print " FP results may deviate slightly from other platforms." 1475 1476 if env['EFENCE']: 1477 env.Append(LIBS=['efence']) 1478 1479 if env['USE_KVM']: 1480 if not have_kvm: 1481 print "Warning: Can not enable KVM, host seems to lack KVM support" 1482 env['USE_KVM'] = False 1483 elif not is_isa_kvm_compatible(env['TARGET_ISA']): 1484 print "Info: KVM support disabled due to unsupported host and " \ 1485 "target ISA combination" 1486 env['USE_KVM'] = False 1487 1488 if env['USE_TUNTAP']: 1489 if not have_tuntap: 1490 print "Warning: Can't connect EtherTap with a tap device." 1491 env['USE_TUNTAP'] = False 1492 1493 if env['BUILD_GPU']: 1494 env.Append(CPPDEFINES=['BUILD_GPU']) 1495 1496 # Warn about missing optional functionality 1497 if env['USE_KVM']: 1498 if not main['HAVE_PERF_ATTR_EXCLUDE_HOST']: 1499 print "Warning: perf_event headers lack support for the " \ 1500 "exclude_host attribute. KVM instruction counts will " \ 1501 "be inaccurate." 1502 1503 # Save sticky variable settings back to current variables file 1504 sticky_vars.Save(current_vars_file, env) 1505 1506 if env['USE_SSE2']: 1507 env.Append(CCFLAGS=['-msse2']) 1508 1509 # The src/SConscript file sets up the build rules in 'env' according 1510 # to the configured variables. It returns a list of environments, 1511 # one for each variant build (debug, opt, etc.) 1512 SConscript('src/SConscript', variant_dir = variant_path, exports = 'env') 1513 1514def pairwise(iterable): 1515 "s -> (s0,s1), (s1,s2), (s2, s3), ..." 1516 a, b = itertools.tee(iterable) 1517 b.next() 1518 return itertools.izip(a, b) 1519 1520variant_names = [variant_name(path) for path in variant_paths] 1521 1522# Create false dependencies so SCons will parse ISAs, establish 1523# dependencies, and setup the build Environments serially. Either 1524# SCons (likely) and/or our SConscripts (possibly) cannot cope with -j 1525# greater than 1. It appears to be standard race condition stuff; it 1526# doesn't always fail, but usually, and the behaviors are different. 1527# Every time I tried to remove this, builds would fail in some 1528# creative new way. So, don't do that. You'll want to, though, because 1529# tests/SConscript takes a long time to make its Environments. 1530for t1, t2 in pairwise(sorted(variant_names)): 1531 main.Depends('#%s-deps' % t2, '#%s-deps' % t1) 1532 main.Depends('#%s-environs' % t2, '#%s-environs' % t1) 1533 1534# base help text 1535Help(''' 1536Usage: scons [scons options] [build variables] [target(s)] 1537 1538Extra scons options: 1539%(options)s 1540 1541Global build variables: 1542%(global_vars)s 1543 1544%(local_vars)s 1545''' % help_texts) 1546