SConstruct revision 10456
1955SN/A# -*- mode:python -*- 2955SN/A 39812Sandreas.hansson@arm.com# Copyright (c) 2013 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 11210196SCurtis.Dunham@arm.comimport itertools 113955SN/Aimport os 1145396Ssaidi@eecs.umich.eduimport re 1155863Snate@binkert.orgimport subprocess 1165863Snate@binkert.orgimport sys 1174202Sbinkertn@umich.edu 1185863Snate@binkert.orgfrom os import mkdir, environ 1195863Snate@binkert.orgfrom os.path import abspath, basename, dirname, expanduser, normpath 1205863Snate@binkert.orgfrom os.path import exists, isdir, isfile 1215863Snate@binkert.orgfrom os.path import join as joinpath, split as splitpath 122955SN/A 1236654Snate@binkert.org# SCons includes 1245273Sstever@gmail.comimport SCons 1255871Snate@binkert.orgimport SCons.Node 1265273Sstever@gmail.com 1276655Snate@binkert.orgextra_python_paths = [ 1288878Ssteve.reinhardt@amd.com Dir('src/python').srcnode().abspath, # gem5 includes 1296655Snate@binkert.org Dir('ext/ply').srcnode().abspath, # ply is used by several files 1306655Snate@binkert.org ] 1319219Spower.jg@gmail.com 1326655Snate@binkert.orgsys.path[1:1] = extra_python_paths 1335871Snate@binkert.org 1346654Snate@binkert.orgfrom m5.util import compareVersions, readCommand 1358947Sandreas.hansson@arm.comfrom m5.util.terminal import get_termcap 1365396Ssaidi@eecs.umich.edu 1378120Sgblack@eecs.umich.eduhelp_texts = { 1388120Sgblack@eecs.umich.edu "options" : "", 1398120Sgblack@eecs.umich.edu "global_vars" : "", 1408120Sgblack@eecs.umich.edu "local_vars" : "" 1418120Sgblack@eecs.umich.edu} 1428120Sgblack@eecs.umich.edu 1438120Sgblack@eecs.umich.eduExport("help_texts") 1448120Sgblack@eecs.umich.edu 1458879Ssteve.reinhardt@amd.com 1468879Ssteve.reinhardt@amd.com# There's a bug in scons in that (1) by default, the help texts from 1478879Ssteve.reinhardt@amd.com# AddOption() are supposed to be displayed when you type 'scons -h' 1488879Ssteve.reinhardt@amd.com# and (2) you can override the help displayed by 'scons -h' using the 1498879Ssteve.reinhardt@amd.com# Help() function, but these two features are incompatible: once 1508879Ssteve.reinhardt@amd.com# you've overridden the help text using Help(), there's no way to get 1518879Ssteve.reinhardt@amd.com# at the help texts from AddOptions. See: 1528879Ssteve.reinhardt@amd.com# http://scons.tigris.org/issues/show_bug.cgi?id=2356 1538879Ssteve.reinhardt@amd.com# http://scons.tigris.org/issues/show_bug.cgi?id=2611 1548879Ssteve.reinhardt@amd.com# This hack lets us extract the help text from AddOptions and 1558879Ssteve.reinhardt@amd.com# re-inject it via Help(). Ideally someday this bug will be fixed and 1568879Ssteve.reinhardt@amd.com# we can just use AddOption directly. 1578879Ssteve.reinhardt@amd.comdef AddLocalOption(*args, **kwargs): 1588120Sgblack@eecs.umich.edu col_width = 30 1598120Sgblack@eecs.umich.edu 1608120Sgblack@eecs.umich.edu help = " " + ", ".join(args) 1618120Sgblack@eecs.umich.edu if "help" in kwargs: 1628120Sgblack@eecs.umich.edu length = len(help) 1638120Sgblack@eecs.umich.edu if length >= col_width: 1648120Sgblack@eecs.umich.edu help += "\n" + " " * col_width 1658120Sgblack@eecs.umich.edu else: 1668120Sgblack@eecs.umich.edu help += " " * (col_width - length) 1678120Sgblack@eecs.umich.edu help += kwargs["help"] 1688120Sgblack@eecs.umich.edu help_texts["options"] += help + "\n" 1698120Sgblack@eecs.umich.edu 1708120Sgblack@eecs.umich.edu AddOption(*args, **kwargs) 1718120Sgblack@eecs.umich.edu 1728879Ssteve.reinhardt@amd.comAddLocalOption('--colors', dest='use_colors', action='store_true', 1738879Ssteve.reinhardt@amd.com help="Add color to abbreviated scons output") 1748879Ssteve.reinhardt@amd.comAddLocalOption('--no-colors', dest='use_colors', action='store_false', 1758879Ssteve.reinhardt@amd.com help="Don't add color to abbreviated scons output") 1768879Ssteve.reinhardt@amd.comAddLocalOption('--default', dest='default', type='string', action='store', 1778879Ssteve.reinhardt@amd.com help='Override which build_opts file to use for defaults') 1788879Ssteve.reinhardt@amd.comAddLocalOption('--ignore-style', dest='ignore_style', action='store_true', 1798879Ssteve.reinhardt@amd.com help='Disable style checking hooks') 1809227Sandreas.hansson@arm.comAddLocalOption('--no-lto', dest='no_lto', action='store_true', 1819227Sandreas.hansson@arm.com help='Disable Link-Time Optimization for fast') 1828879Ssteve.reinhardt@amd.comAddLocalOption('--update-ref', dest='update_ref', action='store_true', 1838879Ssteve.reinhardt@amd.com help='Update test reference outputs') 1848879Ssteve.reinhardt@amd.comAddLocalOption('--verbose', dest='verbose', action='store_true', 1858879Ssteve.reinhardt@amd.com help='Print full tool command lines') 18610453SAndrew.Bardsley@arm.comAddLocalOption('--without-python', dest='without_python', 18710453SAndrew.Bardsley@arm.com action='store_true', 18810453SAndrew.Bardsley@arm.com help='Build without Python configuration support') 18910456SCurtis.Dunham@arm.comAddLocalOption('--without-tcmalloc', dest='without_tcmalloc', 19010456SCurtis.Dunham@arm.com action='store_true', 19110456SCurtis.Dunham@arm.com help='Disable linking against tcmalloc') 1928120Sgblack@eecs.umich.edu 1938947Sandreas.hansson@arm.comtermcap = get_termcap(GetOption('use_colors')) 1947816Ssteve.reinhardt@amd.com 1955871Snate@binkert.org######################################################################## 1965871Snate@binkert.org# 1976121Snate@binkert.org# Set up the main build environment. 1985871Snate@binkert.org# 1995871Snate@binkert.org######################################################################## 2009926Sstan.czerniawski@arm.com 2019926Sstan.czerniawski@arm.com# export TERM so that clang reports errors in color 2029119Sandreas.hansson@arm.comuse_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 20310068Sandreas.hansson@arm.com 'LIBRARY_PATH', 'PATH', 'PKG_CONFIG_PATH', 'PROTOC', 20410068Sandreas.hansson@arm.com 'PYTHONPATH', 'RANLIB', 'SWIG', 'TERM' ]) 205955SN/A 2069416SAndreas.Sandberg@ARM.comuse_prefixes = [ 2079416SAndreas.Sandberg@ARM.com "M5", # M5 configuration (e.g., path to kernels) 2089416SAndreas.Sandberg@ARM.com "DISTCC_", # distcc (distributed compiler wrapper) configuration 2099416SAndreas.Sandberg@ARM.com "CCACHE_", # ccache (caching compiler wrapper) configuration 2109416SAndreas.Sandberg@ARM.com "CCC_", # clang static analyzer configuration 2119416SAndreas.Sandberg@ARM.com ] 2129416SAndreas.Sandberg@ARM.com 2135871Snate@binkert.orguse_env = {} 2145871Snate@binkert.orgfor key,val in os.environ.iteritems(): 2159416SAndreas.Sandberg@ARM.com if key in use_vars or \ 2169416SAndreas.Sandberg@ARM.com any([key.startswith(prefix) for prefix in use_prefixes]): 2175871Snate@binkert.org use_env[key] = val 218955SN/A 2196121Snate@binkert.orgmain = Environment(ENV=use_env) 2208881Smarc.orr@gmail.commain.Decider('MD5-timestamp') 2216121Snate@binkert.orgmain.root = Dir(".") # The current directory (where this file lives). 2226121Snate@binkert.orgmain.srcdir = Dir("src") # The source directory 2231533SN/A 2249239Sandreas.hansson@arm.commain_dict_keys = main.Dictionary().keys() 2259239Sandreas.hansson@arm.com 2269239Sandreas.hansson@arm.com# Check that we have a C/C++ compiler 2279239Sandreas.hansson@arm.comif not ('CC' in main_dict_keys and 'CXX' in main_dict_keys): 2289239Sandreas.hansson@arm.com print "No C++ compiler installed (package g++ on Ubuntu and RedHat)" 2299239Sandreas.hansson@arm.com Exit(1) 2309239Sandreas.hansson@arm.com 2319239Sandreas.hansson@arm.com# Check that swig is present 2329239Sandreas.hansson@arm.comif not 'SWIG' in main_dict_keys: 2339239Sandreas.hansson@arm.com print "swig is not installed (package swig on Ubuntu and RedHat)" 2349239Sandreas.hansson@arm.com Exit(1) 2359239Sandreas.hansson@arm.com 2366655Snate@binkert.org# add useful python code PYTHONPATH so it can be used by subprocesses 2376655Snate@binkert.org# as well 2386655Snate@binkert.orgmain.AppendENVPath('PYTHONPATH', extra_python_paths) 2396655Snate@binkert.org 2405871Snate@binkert.org######################################################################## 2415871Snate@binkert.org# 2425863Snate@binkert.org# Mercurial Stuff. 2435871Snate@binkert.org# 2448878Ssteve.reinhardt@amd.com# If the gem5 directory is a mercurial repository, we should do some 2455871Snate@binkert.org# extra things. 2465871Snate@binkert.org# 2475871Snate@binkert.org######################################################################## 2485863Snate@binkert.org 2496121Snate@binkert.orghgdir = main.root.Dir(".hg") 2505863Snate@binkert.org 2515871Snate@binkert.orgmercurial_style_message = """ 2528336Ssteve.reinhardt@amd.comYou're missing the gem5 style hook, which automatically checks your code 2538336Ssteve.reinhardt@amd.comagainst the gem5 style rules on hg commit and qrefresh commands. This 2548336Ssteve.reinhardt@amd.comscript will now install the hook in your .hg/hgrc file. 2558336Ssteve.reinhardt@amd.comPress enter to continue, or ctrl-c to abort: """ 2564678Snate@binkert.org 2578336Ssteve.reinhardt@amd.commercurial_style_hook = """ 2588336Ssteve.reinhardt@amd.com# The following lines were automatically added by gem5/SConstruct 2598336Ssteve.reinhardt@amd.com# to provide the gem5 style-checking hooks 2604678Snate@binkert.org[extensions] 2614678Snate@binkert.orgstyle = %s/util/style.py 2624678Snate@binkert.org 2634678Snate@binkert.org[hooks] 2647827Snate@binkert.orgpretxncommit.style = python:style.check_style 2657827Snate@binkert.orgpre-qrefresh.style = python:style.check_style 2668336Ssteve.reinhardt@amd.com# End of SConstruct additions 2674678Snate@binkert.org 2688336Ssteve.reinhardt@amd.com""" % (main.root.abspath) 2698336Ssteve.reinhardt@amd.com 2708336Ssteve.reinhardt@amd.commercurial_lib_not_found = """ 2718336Ssteve.reinhardt@amd.comMercurial libraries cannot be found, ignoring style hook. If 2728336Ssteve.reinhardt@amd.comyou are a gem5 developer, please fix this and run the style 2738336Ssteve.reinhardt@amd.comhook. It is important. 2745871Snate@binkert.org""" 2755871Snate@binkert.org 2768336Ssteve.reinhardt@amd.com# Check for style hook and prompt for installation if it's not there. 2778336Ssteve.reinhardt@amd.com# Skip this if --ignore-style was specified, there's no .hg dir to 2788336Ssteve.reinhardt@amd.com# install a hook in, or there's no interactive terminal to prompt. 2798336Ssteve.reinhardt@amd.comif not GetOption('ignore_style') and hgdir.exists() and sys.stdin.isatty(): 2808336Ssteve.reinhardt@amd.com style_hook = True 2815871Snate@binkert.org try: 2828336Ssteve.reinhardt@amd.com from mercurial import ui 2838336Ssteve.reinhardt@amd.com ui = ui.ui() 2848336Ssteve.reinhardt@amd.com ui.readconfig(hgdir.File('hgrc').abspath) 2858336Ssteve.reinhardt@amd.com style_hook = ui.config('hooks', 'pretxncommit.style', None) and \ 2868336Ssteve.reinhardt@amd.com ui.config('hooks', 'pre-qrefresh.style', None) 2874678Snate@binkert.org except ImportError: 2885871Snate@binkert.org print mercurial_lib_not_found 2894678Snate@binkert.org 2908336Ssteve.reinhardt@amd.com if not style_hook: 2918336Ssteve.reinhardt@amd.com print mercurial_style_message, 2928336Ssteve.reinhardt@amd.com # continue unless user does ctrl-c/ctrl-d etc. 2938336Ssteve.reinhardt@amd.com try: 2948336Ssteve.reinhardt@amd.com raw_input() 2958336Ssteve.reinhardt@amd.com except: 2968336Ssteve.reinhardt@amd.com print "Input exception, exiting scons.\n" 2978336Ssteve.reinhardt@amd.com sys.exit(1) 2988336Ssteve.reinhardt@amd.com hgrc_path = '%s/.hg/hgrc' % main.root.abspath 2998336Ssteve.reinhardt@amd.com print "Adding style hook to", hgrc_path, "\n" 3008336Ssteve.reinhardt@amd.com try: 3018336Ssteve.reinhardt@amd.com hgrc = open(hgrc_path, 'a') 3028336Ssteve.reinhardt@amd.com hgrc.write(mercurial_style_hook) 3038336Ssteve.reinhardt@amd.com hgrc.close() 3048336Ssteve.reinhardt@amd.com except: 3058336Ssteve.reinhardt@amd.com print "Error updating", hgrc_path 3068336Ssteve.reinhardt@amd.com sys.exit(1) 3075871Snate@binkert.org 3086121Snate@binkert.org 309955SN/A################################################### 310955SN/A# 3112632Sstever@eecs.umich.edu# Figure out which configurations to set up based on the path(s) of 3122632Sstever@eecs.umich.edu# the target(s). 313955SN/A# 314955SN/A################################################### 315955SN/A 316955SN/A# Find default configuration & binary. 3178878Ssteve.reinhardt@amd.comDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA/gem5.debug')) 318955SN/A 3192632Sstever@eecs.umich.edu# helper function: find last occurrence of element in list 3202632Sstever@eecs.umich.edudef rfind(l, elt, offs = -1): 3212632Sstever@eecs.umich.edu for i in range(len(l)+offs, 0, -1): 3222632Sstever@eecs.umich.edu if l[i] == elt: 3232632Sstever@eecs.umich.edu return i 3242632Sstever@eecs.umich.edu raise ValueError, "element not found" 3252632Sstever@eecs.umich.edu 3268268Ssteve.reinhardt@amd.com# Take a list of paths (or SCons Nodes) and return a list with all 3278268Ssteve.reinhardt@amd.com# paths made absolute and ~-expanded. Paths will be interpreted 3288268Ssteve.reinhardt@amd.com# relative to the launch directory unless a different root is provided 3298268Ssteve.reinhardt@amd.comdef makePathListAbsolute(path_list, root=GetLaunchDir()): 3308268Ssteve.reinhardt@amd.com return [abspath(joinpath(root, expanduser(str(p)))) 3318268Ssteve.reinhardt@amd.com for p in path_list] 3328268Ssteve.reinhardt@amd.com 3332632Sstever@eecs.umich.edu# Each target must have 'build' in the interior of the path; the 3342632Sstever@eecs.umich.edu# directory below this will determine the build parameters. For 3352632Sstever@eecs.umich.edu# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 3362632Sstever@eecs.umich.edu# recognize that ALPHA_SE specifies the configuration because it 3378268Ssteve.reinhardt@amd.com# follow 'build' in the build path. 3382632Sstever@eecs.umich.edu 3398268Ssteve.reinhardt@amd.com# The funky assignment to "[:]" is needed to replace the list contents 3408268Ssteve.reinhardt@amd.com# in place rather than reassign the symbol to a new list, which 3418268Ssteve.reinhardt@amd.com# doesn't work (obviously!). 3428268Ssteve.reinhardt@amd.comBUILD_TARGETS[:] = makePathListAbsolute(BUILD_TARGETS) 3433718Sstever@eecs.umich.edu 3442634Sstever@eecs.umich.edu# Generate a list of the unique build roots and configs that the 3452634Sstever@eecs.umich.edu# collected targets reference. 3465863Snate@binkert.orgvariant_paths = [] 3472638Sstever@eecs.umich.edubuild_root = None 3488268Ssteve.reinhardt@amd.comfor t in BUILD_TARGETS: 3492632Sstever@eecs.umich.edu path_dirs = t.split('/') 3502632Sstever@eecs.umich.edu try: 3512632Sstever@eecs.umich.edu build_top = rfind(path_dirs, 'build', -2) 3522632Sstever@eecs.umich.edu except: 3532632Sstever@eecs.umich.edu print "Error: no non-leaf 'build' dir found on target path", t 3541858SN/A Exit(1) 3553716Sstever@eecs.umich.edu this_build_root = joinpath('/',*path_dirs[:build_top+1]) 3562638Sstever@eecs.umich.edu if not build_root: 3572638Sstever@eecs.umich.edu build_root = this_build_root 3582638Sstever@eecs.umich.edu else: 3592638Sstever@eecs.umich.edu if this_build_root != build_root: 3602638Sstever@eecs.umich.edu print "Error: build targets not under same build root\n"\ 3612638Sstever@eecs.umich.edu " %s\n %s" % (build_root, this_build_root) 3622638Sstever@eecs.umich.edu Exit(1) 3635863Snate@binkert.org variant_path = joinpath('/',*path_dirs[:build_top+2]) 3645863Snate@binkert.org if variant_path not in variant_paths: 3655863Snate@binkert.org variant_paths.append(variant_path) 366955SN/A 3675341Sstever@gmail.com# Make sure build_root exists (might not if this is the first build there) 3685341Sstever@gmail.comif not isdir(build_root): 3695863Snate@binkert.org mkdir(build_root) 3707756SAli.Saidi@ARM.commain['BUILDROOT'] = build_root 3715341Sstever@gmail.com 3726121Snate@binkert.orgExport('main') 3734494Ssaidi@eecs.umich.edu 3746121Snate@binkert.orgmain.SConsignFile(joinpath(build_root, "sconsign")) 3751105SN/A 3762667Sstever@eecs.umich.edu# Default duplicate option is to use hard links, but this messes up 3772667Sstever@eecs.umich.edu# when you use emacs to edit a file in the target dir, as emacs moves 3782667Sstever@eecs.umich.edu# file to file~ then copies to file, breaking the link. Symbolic 3792667Sstever@eecs.umich.edu# (soft) links work better. 3806121Snate@binkert.orgmain.SetOption('duplicate', 'soft-copy') 3812667Sstever@eecs.umich.edu 3825341Sstever@gmail.com# 3835863Snate@binkert.org# Set up global sticky variables... these are common to an entire build 3845341Sstever@gmail.com# tree (not specific to a particular build like ALPHA_SE) 3855341Sstever@gmail.com# 3865341Sstever@gmail.com 3878120Sgblack@eecs.umich.eduglobal_vars_file = joinpath(build_root, 'variables.global') 3885341Sstever@gmail.com 3898120Sgblack@eecs.umich.eduglobal_vars = Variables(global_vars_file, args=ARGUMENTS) 3905341Sstever@gmail.com 3918120Sgblack@eecs.umich.eduglobal_vars.AddVariables( 3926121Snate@binkert.org ('CC', 'C compiler', environ.get('CC', main['CC'])), 3936121Snate@binkert.org ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 3948980Ssteve.reinhardt@amd.com ('SWIG', 'SWIG tool', environ.get('SWIG', main['SWIG'])), 3959396Sandreas.hansson@arm.com ('PROTOC', 'protoc tool', environ.get('PROTOC', 'protoc')), 3965397Ssaidi@eecs.umich.edu ('BATCH', 'Use batch pool for build and tests', False), 3975397Ssaidi@eecs.umich.edu ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 3987727SAli.Saidi@ARM.com ('M5_BUILD_CACHE', 'Cache built objects in this directory', False), 3998268Ssteve.reinhardt@amd.com ('EXTRAS', 'Add extra directories to the compilation', '') 4006168Snate@binkert.org ) 4015341Sstever@gmail.com 4028120Sgblack@eecs.umich.edu# Update main environment with values from ARGUMENTS & global_vars_file 4038120Sgblack@eecs.umich.eduglobal_vars.Update(main) 4048120Sgblack@eecs.umich.eduhelp_texts["global_vars"] += global_vars.GenerateHelpText(main) 4056814Sgblack@eecs.umich.edu 4065863Snate@binkert.org# Save sticky variable settings back to current variables file 4078120Sgblack@eecs.umich.eduglobal_vars.Save(global_vars_file, main) 4085341Sstever@gmail.com 4095863Snate@binkert.org# Parse EXTRAS variable to build list of all directories where we're 4108268Ssteve.reinhardt@amd.com# look for sources etc. This list is exported as extras_dir_list. 4116121Snate@binkert.orgbase_dir = main.srcdir.abspath 4126121Snate@binkert.orgif main['EXTRAS']: 4138268Ssteve.reinhardt@amd.com extras_dir_list = makePathListAbsolute(main['EXTRAS'].split(':')) 4145742Snate@binkert.orgelse: 4155742Snate@binkert.org extras_dir_list = [] 4165341Sstever@gmail.com 4175742Snate@binkert.orgExport('base_dir') 4185742Snate@binkert.orgExport('extras_dir_list') 4195341Sstever@gmail.com 4206017Snate@binkert.org# the ext directory should be on the #includes path 4216121Snate@binkert.orgmain.Append(CPPPATH=[Dir('ext')]) 4226017Snate@binkert.org 4237816Ssteve.reinhardt@amd.comdef strip_build_path(path, env): 4247756SAli.Saidi@ARM.com path = str(path) 4257756SAli.Saidi@ARM.com variant_base = env['BUILDROOT'] + os.path.sep 4267756SAli.Saidi@ARM.com if path.startswith(variant_base): 4277756SAli.Saidi@ARM.com path = path[len(variant_base):] 4287756SAli.Saidi@ARM.com elif path.startswith('build/'): 4297756SAli.Saidi@ARM.com path = path[6:] 4307756SAli.Saidi@ARM.com return path 4317756SAli.Saidi@ARM.com 4327816Ssteve.reinhardt@amd.com# Generate a string of the form: 4337816Ssteve.reinhardt@amd.com# common/path/prefix/src1, src2 -> tgt1, tgt2 4347816Ssteve.reinhardt@amd.com# to print while building. 4357816Ssteve.reinhardt@amd.comclass Transform(object): 4367816Ssteve.reinhardt@amd.com # all specific color settings should be here and nowhere else 4377816Ssteve.reinhardt@amd.com tool_color = termcap.Normal 4387816Ssteve.reinhardt@amd.com pfx_color = termcap.Yellow 4397816Ssteve.reinhardt@amd.com srcs_color = termcap.Yellow + termcap.Bold 4407816Ssteve.reinhardt@amd.com arrow_color = termcap.Blue + termcap.Bold 4417816Ssteve.reinhardt@amd.com tgts_color = termcap.Yellow + termcap.Bold 4427756SAli.Saidi@ARM.com 4437816Ssteve.reinhardt@amd.com def __init__(self, tool, max_sources=99): 4447816Ssteve.reinhardt@amd.com self.format = self.tool_color + (" [%8s] " % tool) \ 4457816Ssteve.reinhardt@amd.com + self.pfx_color + "%s" \ 4467816Ssteve.reinhardt@amd.com + self.srcs_color + "%s" \ 4477816Ssteve.reinhardt@amd.com + self.arrow_color + " -> " \ 4487816Ssteve.reinhardt@amd.com + self.tgts_color + "%s" \ 4497816Ssteve.reinhardt@amd.com + termcap.Normal 4507816Ssteve.reinhardt@amd.com self.max_sources = max_sources 4517816Ssteve.reinhardt@amd.com 4527816Ssteve.reinhardt@amd.com def __call__(self, target, source, env, for_signature=None): 4537816Ssteve.reinhardt@amd.com # truncate source list according to max_sources param 4547816Ssteve.reinhardt@amd.com source = source[0:self.max_sources] 4557816Ssteve.reinhardt@amd.com def strip(f): 4567816Ssteve.reinhardt@amd.com return strip_build_path(str(f), env) 4577816Ssteve.reinhardt@amd.com if len(source) > 0: 4587816Ssteve.reinhardt@amd.com srcs = map(strip, source) 4597816Ssteve.reinhardt@amd.com else: 4607816Ssteve.reinhardt@amd.com srcs = [''] 4617816Ssteve.reinhardt@amd.com tgts = map(strip, target) 4627816Ssteve.reinhardt@amd.com # surprisingly, os.path.commonprefix is a dumb char-by-char string 4637816Ssteve.reinhardt@amd.com # operation that has nothing to do with paths. 4647816Ssteve.reinhardt@amd.com com_pfx = os.path.commonprefix(srcs + tgts) 4657816Ssteve.reinhardt@amd.com com_pfx_len = len(com_pfx) 4667816Ssteve.reinhardt@amd.com if com_pfx: 4677816Ssteve.reinhardt@amd.com # do some cleanup and sanity checking on common prefix 4687816Ssteve.reinhardt@amd.com if com_pfx[-1] == ".": 4697816Ssteve.reinhardt@amd.com # prefix matches all but file extension: ok 4707816Ssteve.reinhardt@amd.com # back up one to change 'foo.cc -> o' to 'foo.cc -> .o' 4717816Ssteve.reinhardt@amd.com com_pfx = com_pfx[0:-1] 4727816Ssteve.reinhardt@amd.com elif com_pfx[-1] == "/": 4737816Ssteve.reinhardt@amd.com # common prefix is directory path: OK 4747816Ssteve.reinhardt@amd.com pass 4757816Ssteve.reinhardt@amd.com else: 4767816Ssteve.reinhardt@amd.com src0_len = len(srcs[0]) 4777816Ssteve.reinhardt@amd.com tgt0_len = len(tgts[0]) 4787816Ssteve.reinhardt@amd.com if src0_len == com_pfx_len: 4797816Ssteve.reinhardt@amd.com # source is a substring of target, OK 4807816Ssteve.reinhardt@amd.com pass 4817816Ssteve.reinhardt@amd.com elif tgt0_len == com_pfx_len: 4827816Ssteve.reinhardt@amd.com # target is a substring of source, need to back up to 4837816Ssteve.reinhardt@amd.com # avoid empty string on RHS of arrow 4847816Ssteve.reinhardt@amd.com sep_idx = com_pfx.rfind(".") 4857816Ssteve.reinhardt@amd.com if sep_idx != -1: 4867816Ssteve.reinhardt@amd.com com_pfx = com_pfx[0:sep_idx] 4877816Ssteve.reinhardt@amd.com else: 4887816Ssteve.reinhardt@amd.com com_pfx = '' 4897816Ssteve.reinhardt@amd.com elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".": 4907816Ssteve.reinhardt@amd.com # still splitting at file extension: ok 4917816Ssteve.reinhardt@amd.com pass 4927816Ssteve.reinhardt@amd.com else: 4937816Ssteve.reinhardt@amd.com # probably a fluke; ignore it 4947816Ssteve.reinhardt@amd.com com_pfx = '' 4957816Ssteve.reinhardt@amd.com # recalculate length in case com_pfx was modified 4967816Ssteve.reinhardt@amd.com com_pfx_len = len(com_pfx) 4977816Ssteve.reinhardt@amd.com def fmt(files): 4987816Ssteve.reinhardt@amd.com f = map(lambda s: s[com_pfx_len:], files) 4997816Ssteve.reinhardt@amd.com return ', '.join(f) 5007816Ssteve.reinhardt@amd.com return self.format % (com_pfx, fmt(srcs), fmt(tgts)) 5017816Ssteve.reinhardt@amd.com 5027816Ssteve.reinhardt@amd.comExport('Transform') 5037816Ssteve.reinhardt@amd.com 5048947Sandreas.hansson@arm.com# enable the regression script to use the termcap 5058947Sandreas.hansson@arm.commain['TERMCAP'] = termcap 5067756SAli.Saidi@ARM.com 5078120Sgblack@eecs.umich.eduif GetOption('verbose'): 5087756SAli.Saidi@ARM.com def MakeAction(action, string, *args, **kwargs): 5097756SAli.Saidi@ARM.com return Action(action, *args, **kwargs) 5107756SAli.Saidi@ARM.comelse: 5117756SAli.Saidi@ARM.com MakeAction = Action 5127816Ssteve.reinhardt@amd.com main['CCCOMSTR'] = Transform("CC") 5137816Ssteve.reinhardt@amd.com main['CXXCOMSTR'] = Transform("CXX") 5147816Ssteve.reinhardt@amd.com main['ASCOMSTR'] = Transform("AS") 5157816Ssteve.reinhardt@amd.com main['SWIGCOMSTR'] = Transform("SWIG") 5167816Ssteve.reinhardt@amd.com main['ARCOMSTR'] = Transform("AR", 0) 5177816Ssteve.reinhardt@amd.com main['LINKCOMSTR'] = Transform("LINK", 0) 5187816Ssteve.reinhardt@amd.com main['RANLIBCOMSTR'] = Transform("RANLIB", 0) 5197816Ssteve.reinhardt@amd.com main['M4COMSTR'] = Transform("M4") 5207816Ssteve.reinhardt@amd.com main['SHCCCOMSTR'] = Transform("SHCC") 5217816Ssteve.reinhardt@amd.com main['SHCXXCOMSTR'] = Transform("SHCXX") 5227756SAli.Saidi@ARM.comExport('MakeAction') 5237756SAli.Saidi@ARM.com 5249227Sandreas.hansson@arm.com# Initialize the Link-Time Optimization (LTO) flags 5259227Sandreas.hansson@arm.commain['LTO_CCFLAGS'] = [] 5269227Sandreas.hansson@arm.commain['LTO_LDFLAGS'] = [] 5279227Sandreas.hansson@arm.com 5289590Sandreas@sandberg.pp.se# According to the readme, tcmalloc works best if the compiler doesn't 5299590Sandreas@sandberg.pp.se# assume that we're using the builtin malloc and friends. These flags 5309590Sandreas@sandberg.pp.se# are compiler-specific, so we need to set them after we detect which 5319590Sandreas@sandberg.pp.se# compiler we're using. 5329590Sandreas@sandberg.pp.semain['TCMALLOC_CCFLAGS'] = [] 5339590Sandreas@sandberg.pp.se 5346654Snate@binkert.orgCXX_version = readCommand([main['CXX'],'--version'], exception=False) 5356654Snate@binkert.orgCXX_V = readCommand([main['CXX'],'-V'], exception=False) 5365871Snate@binkert.org 5376121Snate@binkert.orgmain['GCC'] = CXX_version and CXX_version.find('g++') >= 0 5388946Sandreas.hansson@arm.commain['CLANG'] = CXX_version and CXX_version.find('clang') >= 0 5399419Sandreas.hansson@arm.comif main['GCC'] + main['CLANG'] > 1: 5403940Ssaidi@eecs.umich.edu print 'Error: How can we have two at the same time?' 5413918Ssaidi@eecs.umich.edu Exit(1) 5423918Ssaidi@eecs.umich.edu 5431858SN/A# Set up default C++ compiler flags 5449556Sandreas.hansson@arm.comif main['GCC'] or main['CLANG']: 5459556Sandreas.hansson@arm.com # As gcc and clang share many flags, do the common parts here 5469556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-pipe']) 5479556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-fno-strict-aliasing']) 5489556Sandreas.hansson@arm.com # Enable -Wall and then disable the few warnings that we 5499556Sandreas.hansson@arm.com # consistently violate 5509556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef']) 5519556Sandreas.hansson@arm.com # We always compile using C++11, but only gcc >= 4.7 and clang 3.1 5529556Sandreas.hansson@arm.com # actually use that name, so we stick with c++0x 5539556Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-std=c++0x']) 5549556Sandreas.hansson@arm.com # Add selected sanity checks from -Wextra 5559556Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-Wmissing-field-initializers', 5569556Sandreas.hansson@arm.com '-Woverloaded-virtual']) 5579556Sandreas.hansson@arm.comelse: 5589556Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 5599556Sandreas.hansson@arm.com print "Don't know what compiler options to use for your compiler." 5609556Sandreas.hansson@arm.com print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 5619556Sandreas.hansson@arm.com print termcap.Yellow + ' version:' + termcap.Normal, 5629556Sandreas.hansson@arm.com if not CXX_version: 5639556Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 5649556Sandreas.hansson@arm.com termcap.Normal 5659556Sandreas.hansson@arm.com else: 5669556Sandreas.hansson@arm.com print CXX_version.replace('\n', '<nl>') 5679556Sandreas.hansson@arm.com print " If you're trying to use a compiler other than GCC" 5689556Sandreas.hansson@arm.com print " or clang, there appears to be something wrong with your" 5699556Sandreas.hansson@arm.com print " environment." 5709556Sandreas.hansson@arm.com print " " 5719556Sandreas.hansson@arm.com print " If you are trying to use a compiler other than those listed" 5729556Sandreas.hansson@arm.com print " above you will need to ease fix SConstruct and " 5739556Sandreas.hansson@arm.com print " src/SConscript to support that compiler." 5749556Sandreas.hansson@arm.com Exit(1) 5759556Sandreas.hansson@arm.com 5766121Snate@binkert.orgif main['GCC']: 57710238Sandreas.hansson@arm.com # Check for a supported version of gcc. >= 4.6 is chosen for its 57810238Sandreas.hansson@arm.com # level of c++11 support. See 57910238Sandreas.hansson@arm.com # http://gcc.gnu.org/projects/cxx0x.html for details. 4.6 is also 58010238Sandreas.hansson@arm.com # the first version with proper LTO support. 5819420Sandreas.hansson@arm.com gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 58210238Sandreas.hansson@arm.com if compareVersions(gcc_version, "4.6") < 0: 58310238Sandreas.hansson@arm.com print 'Error: gcc version 4.6 or newer required.' 5849420Sandreas.hansson@arm.com print ' Installed version:', gcc_version 5859420Sandreas.hansson@arm.com Exit(1) 5869420Sandreas.hansson@arm.com 5879420Sandreas.hansson@arm.com main['GCC_VERSION'] = gcc_version 5889420Sandreas.hansson@arm.com 58910264Sandreas.hansson@arm.com # gcc from version 4.8 and above generates "rep; ret" instructions 59010264Sandreas.hansson@arm.com # to avoid performance penalties on certain AMD chips. Older 59110264Sandreas.hansson@arm.com # assemblers detect this as an error, "Error: expecting string 59210264Sandreas.hansson@arm.com # instruction after `rep'" 59310264Sandreas.hansson@arm.com if compareVersions(gcc_version, "4.8") > 0: 59410264Sandreas.hansson@arm.com as_version = readCommand([main['AS'], '-v', '/dev/null'], 59510264Sandreas.hansson@arm.com exception=False).split() 59610264Sandreas.hansson@arm.com 59710264Sandreas.hansson@arm.com if not as_version or compareVersions(as_version[-1], "2.23") < 0: 59810264Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 59910264Sandreas.hansson@arm.com 'Warning: This combination of gcc and binutils have' + \ 60010264Sandreas.hansson@arm.com ' known incompatibilities.\n' + \ 60110264Sandreas.hansson@arm.com ' If you encounter build problems, please update ' + \ 60210264Sandreas.hansson@arm.com 'binutils to 2.23.' + \ 60310264Sandreas.hansson@arm.com termcap.Normal 60410264Sandreas.hansson@arm.com 60510238Sandreas.hansson@arm.com # Add the appropriate Link-Time Optimization (LTO) flags 60610238Sandreas.hansson@arm.com # unless LTO is explicitly turned off. Note that these flags 60710238Sandreas.hansson@arm.com # are only used by the fast target. 60810238Sandreas.hansson@arm.com if not GetOption('no_lto'): 60910238Sandreas.hansson@arm.com # Pass the LTO flag when compiling to produce GIMPLE 61010238Sandreas.hansson@arm.com # output, we merely create the flags here and only append 61110416Sandreas.hansson@arm.com # them later 61210238Sandreas.hansson@arm.com main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 6139227Sandreas.hansson@arm.com 61410238Sandreas.hansson@arm.com # Use the same amount of jobs for LTO as we are running 61510416Sandreas.hansson@arm.com # scons with 61610416Sandreas.hansson@arm.com main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 6179227Sandreas.hansson@arm.com 6189590Sandreas@sandberg.pp.se main.Append(TCMALLOC_CCFLAGS=['-fno-builtin-malloc', '-fno-builtin-calloc', 6199590Sandreas@sandberg.pp.se '-fno-builtin-realloc', '-fno-builtin-free']) 6209590Sandreas@sandberg.pp.se 6218737Skoansin.tan@gmail.comelif main['CLANG']: 62210238Sandreas.hansson@arm.com # Check for a supported version of clang, >= 3.0 is needed to 62310238Sandreas.hansson@arm.com # support similar features as gcc 4.6. See 6249420Sandreas.hansson@arm.com # http://clang.llvm.org/cxx_status.html for details 6258737Skoansin.tan@gmail.com clang_version_re = re.compile(".* version (\d+\.\d+)") 62610106SMitch.Hayenga@arm.com clang_version_match = clang_version_re.search(CXX_version) 6278737Skoansin.tan@gmail.com if (clang_version_match): 6288737Skoansin.tan@gmail.com clang_version = clang_version_match.groups()[0] 62910238Sandreas.hansson@arm.com if compareVersions(clang_version, "3.0") < 0: 63010238Sandreas.hansson@arm.com print 'Error: clang version 3.0 or newer required.' 6318737Skoansin.tan@gmail.com print ' Installed version:', clang_version 6328737Skoansin.tan@gmail.com Exit(1) 6338737Skoansin.tan@gmail.com else: 6348737Skoansin.tan@gmail.com print 'Error: Unable to determine clang version.' 6358737Skoansin.tan@gmail.com Exit(1) 6368737Skoansin.tan@gmail.com 6379556Sandreas.hansson@arm.com # clang has a few additional warnings that we disable, 6389556Sandreas.hansson@arm.com # tautological comparisons are allowed due to unsigned integers 6399556Sandreas.hansson@arm.com # being compared to constants that happen to be 0, and extraneous 6409556Sandreas.hansson@arm.com # parantheses are allowed due to Ruby's printing of the AST, 6419556Sandreas.hansson@arm.com # finally self assignments are allowed as the generated CPU code 6429556Sandreas.hansson@arm.com # is relying on this 6439556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-Wno-tautological-compare', 6449556Sandreas.hansson@arm.com '-Wno-parentheses', 64510278SAndreas.Sandberg@ARM.com '-Wno-self-assign', 64610278SAndreas.Sandberg@ARM.com # Some versions of libstdc++ (4.8?) seem to 64710278SAndreas.Sandberg@ARM.com # use struct hash and class hash 64810278SAndreas.Sandberg@ARM.com # interchangeably. 64910278SAndreas.Sandberg@ARM.com '-Wno-mismatched-tags', 65010278SAndreas.Sandberg@ARM.com ]) 6519556Sandreas.hansson@arm.com 6529590Sandreas@sandberg.pp.se main.Append(TCMALLOC_CCFLAGS=['-fno-builtin']) 6539590Sandreas@sandberg.pp.se 6549420Sandreas.hansson@arm.com # On Mac OS X/Darwin we need to also use libc++ (part of XCode) as 6559846Sandreas.hansson@arm.com # opposed to libstdc++, as the later is dated. 6569846Sandreas.hansson@arm.com if sys.platform == "darwin": 6579846Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-stdlib=libc++']) 6589846Sandreas.hansson@arm.com main.Append(LIBS=['c++']) 6598946Sandreas.hansson@arm.com 6603918Ssaidi@eecs.umich.eduelse: 6619068SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 6629068SAli.Saidi@ARM.com print "Don't know what compiler options to use for your compiler." 6639068SAli.Saidi@ARM.com print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 6649068SAli.Saidi@ARM.com print termcap.Yellow + ' version:' + termcap.Normal, 6659068SAli.Saidi@ARM.com if not CXX_version: 6669068SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 6679068SAli.Saidi@ARM.com termcap.Normal 6689068SAli.Saidi@ARM.com else: 6699068SAli.Saidi@ARM.com print CXX_version.replace('\n', '<nl>') 6709419Sandreas.hansson@arm.com print " If you're trying to use a compiler other than GCC" 6719068SAli.Saidi@ARM.com print " or clang, there appears to be something wrong with your" 6729068SAli.Saidi@ARM.com print " environment." 6739068SAli.Saidi@ARM.com print " " 6749068SAli.Saidi@ARM.com print " If you are trying to use a compiler other than those listed" 6759068SAli.Saidi@ARM.com print " above you will need to ease fix SConstruct and " 6769068SAli.Saidi@ARM.com print " src/SConscript to support that compiler." 6773918Ssaidi@eecs.umich.edu Exit(1) 6783918Ssaidi@eecs.umich.edu 6796157Snate@binkert.org# Set up common yacc/bison flags (needed for Ruby) 6806157Snate@binkert.orgmain['YACCFLAGS'] = '-d' 6816157Snate@binkert.orgmain['YACCHXXFILESUFFIX'] = '.hh' 6826157Snate@binkert.org 6835397Ssaidi@eecs.umich.edu# Do this after we save setting back, or else we'll tack on an 6845397Ssaidi@eecs.umich.edu# extra 'qdo' every time we run scons. 6856121Snate@binkert.orgif main['BATCH']: 6866121Snate@binkert.org main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 6876121Snate@binkert.org main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 6886121Snate@binkert.org main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 6896121Snate@binkert.org main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 6906121Snate@binkert.org main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 6915397Ssaidi@eecs.umich.edu 6921851SN/Aif sys.platform == 'cygwin': 6931851SN/A # cygwin has some header file issues... 6947739Sgblack@eecs.umich.edu main.Append(CCFLAGS=["-Wno-uninitialized"]) 695955SN/A 6969396Sandreas.hansson@arm.com# Check for the protobuf compiler 6979396Sandreas.hansson@arm.comprotoc_version = readCommand([main['PROTOC'], '--version'], 6989396Sandreas.hansson@arm.com exception='').split() 6999396Sandreas.hansson@arm.com 7009396Sandreas.hansson@arm.com# First two words should be "libprotoc x.y.z" 7019396Sandreas.hansson@arm.comif len(protoc_version) < 2 or protoc_version[0] != 'libprotoc': 7029396Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 7039396Sandreas.hansson@arm.com 'Warning: Protocol buffer compiler (protoc) not found.\n' + \ 7049396Sandreas.hansson@arm.com ' Please install protobuf-compiler for tracing support.' + \ 7059396Sandreas.hansson@arm.com termcap.Normal 7069396Sandreas.hansson@arm.com main['PROTOC'] = False 7079396Sandreas.hansson@arm.comelse: 7089396Sandreas.hansson@arm.com # Based on the availability of the compress stream wrappers, 7099396Sandreas.hansson@arm.com # require 2.1.0 7109396Sandreas.hansson@arm.com min_protoc_version = '2.1.0' 7119396Sandreas.hansson@arm.com if compareVersions(protoc_version[1], min_protoc_version) < 0: 7129477Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 7139477Sandreas.hansson@arm.com 'Warning: protoc version', min_protoc_version, \ 7149477Sandreas.hansson@arm.com 'or newer required.\n' + \ 7159477Sandreas.hansson@arm.com ' Installed version:', protoc_version[1], \ 7169477Sandreas.hansson@arm.com termcap.Normal 7179477Sandreas.hansson@arm.com main['PROTOC'] = False 7189477Sandreas.hansson@arm.com else: 7199477Sandreas.hansson@arm.com # Attempt to determine the appropriate include path and 7209477Sandreas.hansson@arm.com # library path using pkg-config, that means we also need to 7219477Sandreas.hansson@arm.com # check for pkg-config. Note that it is possible to use 7229477Sandreas.hansson@arm.com # protobuf without the involvement of pkg-config. Later on we 7239477Sandreas.hansson@arm.com # check go a library config check and at that point the test 7249477Sandreas.hansson@arm.com # will fail if libprotobuf cannot be found. 7259477Sandreas.hansson@arm.com if readCommand(['pkg-config', '--version'], exception=''): 7269477Sandreas.hansson@arm.com try: 7279477Sandreas.hansson@arm.com # Attempt to establish what linking flags to add for protobuf 7289477Sandreas.hansson@arm.com # using pkg-config 7299477Sandreas.hansson@arm.com main.ParseConfig('pkg-config --cflags --libs-only-L protobuf') 7309477Sandreas.hansson@arm.com except: 7319477Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 7329477Sandreas.hansson@arm.com 'Warning: pkg-config could not get protobuf flags.' + \ 7339477Sandreas.hansson@arm.com termcap.Normal 7349396Sandreas.hansson@arm.com 7353053Sstever@eecs.umich.edu# Check for SWIG 7366121Snate@binkert.orgif not main.has_key('SWIG'): 7373053Sstever@eecs.umich.edu print 'Error: SWIG utility not found.' 7383053Sstever@eecs.umich.edu print ' Please install (see http://www.swig.org) and retry.' 7393053Sstever@eecs.umich.edu Exit(1) 7403053Sstever@eecs.umich.edu 7413053Sstever@eecs.umich.edu# Check for appropriate SWIG version 7429072Sandreas.hansson@arm.comswig_version = readCommand([main['SWIG'], '-version'], exception='').split() 7433053Sstever@eecs.umich.edu# First 3 words should be "SWIG Version x.y.z" 7444742Sstever@eecs.umich.eduif len(swig_version) < 3 or \ 7454742Sstever@eecs.umich.edu swig_version[0] != 'SWIG' or swig_version[1] != 'Version': 7463053Sstever@eecs.umich.edu print 'Error determining SWIG version.' 7473053Sstever@eecs.umich.edu Exit(1) 7483053Sstever@eecs.umich.edu 74910181SCurtis.Dunham@arm.commin_swig_version = '2.0.4' 7506654Snate@binkert.orgif compareVersions(swig_version[2], min_swig_version) < 0: 7513053Sstever@eecs.umich.edu print 'Error: SWIG version', min_swig_version, 'or newer required.' 7523053Sstever@eecs.umich.edu print ' Installed version:', swig_version[2] 7533053Sstever@eecs.umich.edu Exit(1) 7543053Sstever@eecs.umich.edu 75510425Sandreas.hansson@arm.com# Check for known incompatibilities. The standard library shipped with 75610425Sandreas.hansson@arm.com# gcc >= 4.9 does not play well with swig versions prior to 3.0 75710425Sandreas.hansson@arm.comif main['GCC'] and compareVersions(gcc_version, '4.9') >= 0 and \ 75810425Sandreas.hansson@arm.com compareVersions(swig_version[2], '3.0') < 0: 75910425Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 76010425Sandreas.hansson@arm.com 'Warning: This combination of gcc and swig have' + \ 76110425Sandreas.hansson@arm.com ' known incompatibilities.\n' + \ 76210425Sandreas.hansson@arm.com ' If you encounter build problems, please update ' + \ 76310425Sandreas.hansson@arm.com 'swig to 3.0 or later.' + \ 76410425Sandreas.hansson@arm.com termcap.Normal 76510425Sandreas.hansson@arm.com 7662667Sstever@eecs.umich.edu# Set up SWIG flags & scanner 7674554Sbinkertn@umich.eduswig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS') 7686121Snate@binkert.orgmain.Append(SWIGFLAGS=swig_flags) 7692667Sstever@eecs.umich.edu 77010384SCurtis.Dunham@arm.com# Check for 'timeout' from GNU coreutils. If present, regressions 77110384SCurtis.Dunham@arm.com# will be run with a time limit. 77210384SCurtis.Dunham@arm.comTIMEOUT_version = readCommand(['timeout', '--version'], exception=False) 77310384SCurtis.Dunham@arm.commain['TIMEOUT'] = TIMEOUT_version and TIMEOUT_version.find('timeout') == 0 77410384SCurtis.Dunham@arm.com 7754554Sbinkertn@umich.edu# filter out all existing swig scanners, they mess up the dependency 7764554Sbinkertn@umich.edu# stuff for some reason 7774554Sbinkertn@umich.eduscanners = [] 7786121Snate@binkert.orgfor scanner in main['SCANNERS']: 7794554Sbinkertn@umich.edu skeys = scanner.skeys 7804554Sbinkertn@umich.edu if skeys == '.i': 7814554Sbinkertn@umich.edu continue 7824781Snate@binkert.org 7834554Sbinkertn@umich.edu if isinstance(skeys, (list, tuple)) and '.i' in skeys: 7844554Sbinkertn@umich.edu continue 7852667Sstever@eecs.umich.edu 7864554Sbinkertn@umich.edu scanners.append(scanner) 7874554Sbinkertn@umich.edu 7884554Sbinkertn@umich.edu# add the new swig scanner that we like better 7894554Sbinkertn@umich.edufrom SCons.Scanner import ClassicCPP as CPPScanner 7902667Sstever@eecs.umich.eduswig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")' 7914554Sbinkertn@umich.eduscanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re)) 7922667Sstever@eecs.umich.edu 7934554Sbinkertn@umich.edu# replace the scanners list that has what we want 7946121Snate@binkert.orgmain['SCANNERS'] = scanners 7952667Sstever@eecs.umich.edu 7965522Snate@binkert.org# Add a custom Check function to the Configure context so that we can 7975522Snate@binkert.org# figure out if the compiler adds leading underscores to global 7985522Snate@binkert.org# variables. This is needed for the autogenerated asm files that we 7995522Snate@binkert.org# use for embedding the python code. 8005522Snate@binkert.orgdef CheckLeading(context): 8015522Snate@binkert.org context.Message("Checking for leading underscore in global variables...") 8025522Snate@binkert.org # 1) Define a global variable called x from asm so the C compiler 8035522Snate@binkert.org # won't change the symbol at all. 8045522Snate@binkert.org # 2) Declare that variable. 8055522Snate@binkert.org # 3) Use the variable 8065522Snate@binkert.org # 8075522Snate@binkert.org # If the compiler prepends an underscore, this will successfully 8085522Snate@binkert.org # link because the external symbol 'x' will be called '_x' which 8095522Snate@binkert.org # was defined by the asm statement. If the compiler does not 8105522Snate@binkert.org # prepend an underscore, this will not successfully link because 8115522Snate@binkert.org # '_x' will have been defined by assembly, while the C portion of 8125522Snate@binkert.org # the code will be trying to use 'x' 8135522Snate@binkert.org ret = context.TryLink(''' 8145522Snate@binkert.org asm(".globl _x; _x: .byte 0"); 8155522Snate@binkert.org extern int x; 8165522Snate@binkert.org int main() { return x; } 8175522Snate@binkert.org ''', extension=".c") 8185522Snate@binkert.org context.env.Append(LEADING_UNDERSCORE=ret) 8195522Snate@binkert.org context.Result(ret) 8205522Snate@binkert.org return ret 8215522Snate@binkert.org 8229986Sandreas@sandberg.pp.se# Add a custom Check function to test for structure members. 8239986Sandreas@sandberg.pp.sedef CheckMember(context, include, decl, member, include_quotes="<>"): 8249986Sandreas@sandberg.pp.se context.Message("Checking for member %s in %s..." % 8259986Sandreas@sandberg.pp.se (member, decl)) 8269986Sandreas@sandberg.pp.se text = """ 8279986Sandreas@sandberg.pp.se#include %(header)s 8289986Sandreas@sandberg.pp.seint main(){ 8299986Sandreas@sandberg.pp.se %(decl)s test; 8309986Sandreas@sandberg.pp.se (void)test.%(member)s; 8319986Sandreas@sandberg.pp.se return 0; 8329986Sandreas@sandberg.pp.se}; 8339986Sandreas@sandberg.pp.se""" % { "header" : include_quotes[0] + include + include_quotes[1], 8349986Sandreas@sandberg.pp.se "decl" : decl, 8359986Sandreas@sandberg.pp.se "member" : member, 8369986Sandreas@sandberg.pp.se } 8379986Sandreas@sandberg.pp.se 8389986Sandreas@sandberg.pp.se ret = context.TryCompile(text, extension=".cc") 8399986Sandreas@sandberg.pp.se context.Result(ret) 8409986Sandreas@sandberg.pp.se return ret 8419986Sandreas@sandberg.pp.se 8422638Sstever@eecs.umich.edu# Platform-specific configuration. Note again that we assume that all 8432638Sstever@eecs.umich.edu# builds under a given build root run on the same host platform. 8446121Snate@binkert.orgconf = Configure(main, 8453716Sstever@eecs.umich.edu conf_dir = joinpath(build_root, '.scons_config'), 8465522Snate@binkert.org log_file = joinpath(build_root, 'scons_config.log'), 8479986Sandreas@sandberg.pp.se custom_tests = { 8489986Sandreas@sandberg.pp.se 'CheckLeading' : CheckLeading, 8499986Sandreas@sandberg.pp.se 'CheckMember' : CheckMember, 8509986Sandreas@sandberg.pp.se }) 8515522Snate@binkert.org 8525522Snate@binkert.org# Check for leading underscores. Don't really need to worry either 8535522Snate@binkert.org# way so don't need to check the return code. 8545522Snate@binkert.orgconf.CheckLeading() 8551858SN/A 8565227Ssaidi@eecs.umich.edu# Check if we should compile a 64 bit binary on Mac OS X/Darwin 8575227Ssaidi@eecs.umich.edutry: 8585227Ssaidi@eecs.umich.edu import platform 8595227Ssaidi@eecs.umich.edu uname = platform.uname() 8606654Snate@binkert.org if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0: 8616654Snate@binkert.org if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]): 8627769SAli.Saidi@ARM.com main.Append(CCFLAGS=['-arch', 'x86_64']) 8637769SAli.Saidi@ARM.com main.Append(CFLAGS=['-arch', 'x86_64']) 8647769SAli.Saidi@ARM.com main.Append(LINKFLAGS=['-arch', 'x86_64']) 8657769SAli.Saidi@ARM.com main.Append(ASFLAGS=['-arch', 'x86_64']) 8665227Ssaidi@eecs.umich.eduexcept: 8675227Ssaidi@eecs.umich.edu pass 8685227Ssaidi@eecs.umich.edu 8695204Sstever@gmail.com# Recent versions of scons substitute a "Null" object for Configure() 8705204Sstever@gmail.com# when configuration isn't necessary, e.g., if the "--help" option is 8715204Sstever@gmail.com# present. Unfortuantely this Null object always returns false, 8725204Sstever@gmail.com# breaking all our configuration checks. We replace it with our own 8735204Sstever@gmail.com# more optimistic null object that returns True instead. 8745204Sstever@gmail.comif not conf: 8755204Sstever@gmail.com def NullCheck(*args, **kwargs): 8765204Sstever@gmail.com return True 8775204Sstever@gmail.com 8785204Sstever@gmail.com class NullConf: 8795204Sstever@gmail.com def __init__(self, env): 8805204Sstever@gmail.com self.env = env 8815204Sstever@gmail.com def Finish(self): 8825204Sstever@gmail.com return self.env 8835204Sstever@gmail.com def __getattr__(self, mname): 8845204Sstever@gmail.com return NullCheck 8855204Sstever@gmail.com 8866121Snate@binkert.org conf = NullConf(main) 8875204Sstever@gmail.com 8887727SAli.Saidi@ARM.com# Cache build files in the supplied directory. 8897727SAli.Saidi@ARM.comif main['M5_BUILD_CACHE']: 8907727SAli.Saidi@ARM.com print 'Using build cache located at', main['M5_BUILD_CACHE'] 8917727SAli.Saidi@ARM.com CacheDir(main['M5_BUILD_CACHE']) 8927727SAli.Saidi@ARM.com 89310453SAndrew.Bardsley@arm.comif not GetOption('without_python'): 89410453SAndrew.Bardsley@arm.com # Find Python include and library directories for embedding the 89510453SAndrew.Bardsley@arm.com # interpreter. We rely on python-config to resolve the appropriate 89610453SAndrew.Bardsley@arm.com # includes and linker flags. ParseConfig does not seem to understand 89710453SAndrew.Bardsley@arm.com # the more exotic linker flags such as -Xlinker and -export-dynamic so 89810453SAndrew.Bardsley@arm.com # we add them explicitly below. If you want to link in an alternate 89910453SAndrew.Bardsley@arm.com # version of python, see above for instructions on how to invoke 90010453SAndrew.Bardsley@arm.com # scons with the appropriate PATH set. 90110453SAndrew.Bardsley@arm.com # 90210453SAndrew.Bardsley@arm.com # First we check if python2-config exists, else we use python-config 90310453SAndrew.Bardsley@arm.com python_config = readCommand(['which', 'python2-config'], 90410160Sandreas.hansson@arm.com exception='').strip() 90510453SAndrew.Bardsley@arm.com if not os.path.exists(python_config): 90610453SAndrew.Bardsley@arm.com python_config = readCommand(['which', 'python-config'], 90710453SAndrew.Bardsley@arm.com exception='').strip() 90810453SAndrew.Bardsley@arm.com py_includes = readCommand([python_config, '--includes'], 90910453SAndrew.Bardsley@arm.com exception='').split() 91010453SAndrew.Bardsley@arm.com # Strip the -I from the include folders before adding them to the 91110453SAndrew.Bardsley@arm.com # CPPPATH 91210453SAndrew.Bardsley@arm.com main.Append(CPPPATH=map(lambda inc: inc[2:], py_includes)) 9139812Sandreas.hansson@arm.com 91410453SAndrew.Bardsley@arm.com # Read the linker flags and split them into libraries and other link 91510453SAndrew.Bardsley@arm.com # flags. The libraries are added later through the call the CheckLib. 91610453SAndrew.Bardsley@arm.com py_ld_flags = readCommand([python_config, '--ldflags'], 91710453SAndrew.Bardsley@arm.com exception='').split() 91810453SAndrew.Bardsley@arm.com py_libs = [] 91910453SAndrew.Bardsley@arm.com for lib in py_ld_flags: 92010453SAndrew.Bardsley@arm.com if not lib.startswith('-l'): 92110453SAndrew.Bardsley@arm.com main.Append(LINKFLAGS=[lib]) 92210453SAndrew.Bardsley@arm.com else: 92310453SAndrew.Bardsley@arm.com lib = lib[2:] 92410453SAndrew.Bardsley@arm.com if lib not in py_libs: 92510453SAndrew.Bardsley@arm.com py_libs.append(lib) 9267727SAli.Saidi@ARM.com 92710453SAndrew.Bardsley@arm.com # verify that this stuff works 92810453SAndrew.Bardsley@arm.com if not conf.CheckHeader('Python.h', '<>'): 92910453SAndrew.Bardsley@arm.com print "Error: can't find Python.h header in", py_includes 93010453SAndrew.Bardsley@arm.com print "Install Python headers (package python-dev on Ubuntu and RedHat)" 93110453SAndrew.Bardsley@arm.com Exit(1) 9323118Sstever@eecs.umich.edu 93310453SAndrew.Bardsley@arm.com for lib in py_libs: 93410453SAndrew.Bardsley@arm.com if not conf.CheckLib(lib): 93510453SAndrew.Bardsley@arm.com print "Error: can't find library %s required by python" % lib 93610453SAndrew.Bardsley@arm.com Exit(1) 9373118Sstever@eecs.umich.edu 9383483Ssaidi@eecs.umich.edu# On Solaris you need to use libsocket for socket ops 9393494Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 9403494Ssaidi@eecs.umich.edu if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 9413483Ssaidi@eecs.umich.edu print "Can't find library with socket calls (e.g. accept())" 9423483Ssaidi@eecs.umich.edu Exit(1) 9433483Ssaidi@eecs.umich.edu 9443053Sstever@eecs.umich.edu# Check for zlib. If the check passes, libz will be automatically 9453053Sstever@eecs.umich.edu# added to the LIBS environment variable. 9463918Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 9473053Sstever@eecs.umich.edu print 'Error: did not find needed zlib compression library '\ 9483053Sstever@eecs.umich.edu 'and/or zlib.h header file.' 9493053Sstever@eecs.umich.edu print ' Please install zlib and try again.' 9503053Sstever@eecs.umich.edu Exit(1) 9513053Sstever@eecs.umich.edu 9529396Sandreas.hansson@arm.com# If we have the protobuf compiler, also make sure we have the 9539396Sandreas.hansson@arm.com# development libraries. If the check passes, libprotobuf will be 9549396Sandreas.hansson@arm.com# automatically added to the LIBS environment variable. After 9559396Sandreas.hansson@arm.com# this, we can use the HAVE_PROTOBUF flag to determine if we have 9569396Sandreas.hansson@arm.com# got both protoc and libprotobuf available. 9579396Sandreas.hansson@arm.commain['HAVE_PROTOBUF'] = main['PROTOC'] and \ 9589396Sandreas.hansson@arm.com conf.CheckLibWithHeader('protobuf', 'google/protobuf/message.h', 9599396Sandreas.hansson@arm.com 'C++', 'GOOGLE_PROTOBUF_VERIFY_VERSION;') 9609396Sandreas.hansson@arm.com 9619477Sandreas.hansson@arm.com# If we have the compiler but not the library, print another warning. 9629396Sandreas.hansson@arm.comif main['PROTOC'] and not main['HAVE_PROTOBUF']: 9639477Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 9649477Sandreas.hansson@arm.com 'Warning: did not find protocol buffer library and/or headers.\n' + \ 9659477Sandreas.hansson@arm.com ' Please install libprotobuf-dev for tracing support.' + \ 9669477Sandreas.hansson@arm.com termcap.Normal 9679396Sandreas.hansson@arm.com 9687840Snate@binkert.org# Check for librt. 9697865Sgblack@eecs.umich.eduhave_posix_clock = \ 9707865Sgblack@eecs.umich.edu conf.CheckLibWithHeader(None, 'time.h', 'C', 9717865Sgblack@eecs.umich.edu 'clock_nanosleep(0,0,NULL,NULL);') or \ 9727865Sgblack@eecs.umich.edu conf.CheckLibWithHeader('rt', 'time.h', 'C', 9737865Sgblack@eecs.umich.edu 'clock_nanosleep(0,0,NULL,NULL);') 9747840Snate@binkert.org 9759900Sandreas@sandberg.pp.sehave_posix_timers = \ 9769900Sandreas@sandberg.pp.se conf.CheckLibWithHeader([None, 'rt'], [ 'time.h', 'signal.h' ], 'C', 9779900Sandreas@sandberg.pp.se 'timer_create(CLOCK_MONOTONIC, NULL, NULL);') 9789900Sandreas@sandberg.pp.se 97910456SCurtis.Dunham@arm.comif not GetOption('without_tcmalloc'): 98010456SCurtis.Dunham@arm.com if conf.CheckLib('tcmalloc'): 98110456SCurtis.Dunham@arm.com main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 98210456SCurtis.Dunham@arm.com elif conf.CheckLib('tcmalloc_minimal'): 98310456SCurtis.Dunham@arm.com main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 98410456SCurtis.Dunham@arm.com else: 98510456SCurtis.Dunham@arm.com print termcap.Yellow + termcap.Bold + \ 98610456SCurtis.Dunham@arm.com "You can get a 12% performance improvement by "\ 98710456SCurtis.Dunham@arm.com "installing tcmalloc (libgoogle-perftools-dev package "\ 98810456SCurtis.Dunham@arm.com "on Ubuntu or RedHat)." + termcap.Normal 9899045SAli.Saidi@ARM.com 9907840Snate@binkert.orgif not have_posix_clock: 9917840Snate@binkert.org print "Can't find library for POSIX clocks." 9927840Snate@binkert.org 9931858SN/A# Check for <fenv.h> (C99 FP environment control) 9941858SN/Ahave_fenv = conf.CheckHeader('fenv.h', '<>') 9951858SN/Aif not have_fenv: 9961858SN/A print "Warning: Header file <fenv.h> not found." 9971858SN/A print " This host has no IEEE FP rounding mode control." 9981858SN/A 9999903Sandreas.hansson@arm.com# Check if we should enable KVM-based hardware virtualization. The API 10009903Sandreas.hansson@arm.com# we rely on exists since version 2.6.36 of the kernel, but somehow 10019903Sandreas.hansson@arm.com# the KVM_API_VERSION does not reflect the change. We test for one of 10029903Sandreas.hansson@arm.com# the types as a fall back. 10039903Sandreas.hansson@arm.comhave_kvm = conf.CheckHeader('linux/kvm.h', '<>') and \ 10049903Sandreas.hansson@arm.com conf.CheckTypeSize('struct kvm_xsave', '#include <linux/kvm.h>') != 0 10059651SAndreas.Sandberg@ARM.comif not have_kvm: 10069903Sandreas.hansson@arm.com print "Info: Compatible header file <linux/kvm.h> not found, " \ 10079651SAndreas.Sandberg@ARM.com "disabling KVM support." 10089651SAndreas.Sandberg@ARM.com 10099651SAndreas.Sandberg@ARM.com# Check if the requested target ISA is compatible with the host 10109651SAndreas.Sandberg@ARM.comdef is_isa_kvm_compatible(isa): 10119651SAndreas.Sandberg@ARM.com isa_comp_table = { 10129657Sandreas.sandberg@arm.com "arm" : ( "armv7l" ), 10139883Sandreas@sandberg.pp.se "x86" : ( "x86_64" ), 10149651SAndreas.Sandberg@ARM.com } 10159651SAndreas.Sandberg@ARM.com try: 10169651SAndreas.Sandberg@ARM.com import platform 10179651SAndreas.Sandberg@ARM.com host_isa = platform.machine() 10189651SAndreas.Sandberg@ARM.com except: 10199651SAndreas.Sandberg@ARM.com print "Warning: Failed to determine host ISA." 10209651SAndreas.Sandberg@ARM.com return False 10219651SAndreas.Sandberg@ARM.com 10229651SAndreas.Sandberg@ARM.com return host_isa in isa_comp_table.get(isa, []) 10239651SAndreas.Sandberg@ARM.com 10249651SAndreas.Sandberg@ARM.com 10259986Sandreas@sandberg.pp.se# Check if the exclude_host attribute is available. We want this to 10269986Sandreas@sandberg.pp.se# get accurate instruction counts in KVM. 10279986Sandreas@sandberg.pp.semain['HAVE_PERF_ATTR_EXCLUDE_HOST'] = conf.CheckMember( 10289986Sandreas@sandberg.pp.se 'linux/perf_event.h', 'struct perf_event_attr', 'exclude_host') 10299986Sandreas@sandberg.pp.se 10309986Sandreas@sandberg.pp.se 10315863Snate@binkert.org###################################################################### 10325863Snate@binkert.org# 10335863Snate@binkert.org# Finish the configuration 10345863Snate@binkert.org# 10356121Snate@binkert.orgmain = conf.Finish() 10361858SN/A 10375863Snate@binkert.org###################################################################### 10385863Snate@binkert.org# 10395863Snate@binkert.org# Collect all non-global variables 10405863Snate@binkert.org# 10415863Snate@binkert.org 10422139SN/A# Define the universe of supported ISAs 10434202Sbinkertn@umich.eduall_isa_list = [ ] 10444202Sbinkertn@umich.eduExport('all_isa_list') 10452139SN/A 10466994Snate@binkert.orgclass CpuModel(object): 10476994Snate@binkert.org '''The CpuModel class encapsulates everything the ISA parser needs to 10486994Snate@binkert.org know about a particular CPU model.''' 10496994Snate@binkert.org 10506994Snate@binkert.org # Dict of available CPU model objects. Accessible as CpuModel.dict. 10516994Snate@binkert.org dict = {} 10526994Snate@binkert.org 10536994Snate@binkert.org # Constructor. Automatically adds models to CpuModel.dict. 105410319SAndreas.Sandberg@ARM.com def __init__(self, name, default=False): 10556994Snate@binkert.org self.name = name # name of model 10566994Snate@binkert.org 10576994Snate@binkert.org # This cpu is enabled by default 10586994Snate@binkert.org self.default = default 10596994Snate@binkert.org 10606994Snate@binkert.org # Add self to dict 10616994Snate@binkert.org if name in CpuModel.dict: 10626994Snate@binkert.org raise AttributeError, "CpuModel '%s' already registered" % name 10636994Snate@binkert.org CpuModel.dict[name] = self 10646994Snate@binkert.org 10656994Snate@binkert.orgExport('CpuModel') 10662155SN/A 10675863Snate@binkert.org# Sticky variables get saved in the variables file so they persist from 10681869SN/A# one invocation to the next (unless overridden, in which case the new 10691869SN/A# value becomes sticky). 10705863Snate@binkert.orgsticky_vars = Variables(args=ARGUMENTS) 10715863Snate@binkert.orgExport('sticky_vars') 10724202Sbinkertn@umich.edu 10736108Snate@binkert.org# Sticky variables that should be exported 10746108Snate@binkert.orgexport_vars = [] 10756108Snate@binkert.orgExport('export_vars') 10766108Snate@binkert.org 10779219Spower.jg@gmail.com# For Ruby 10789219Spower.jg@gmail.comall_protocols = [] 10799219Spower.jg@gmail.comExport('all_protocols') 10809219Spower.jg@gmail.comprotocol_dirs = [] 10819219Spower.jg@gmail.comExport('protocol_dirs') 10829219Spower.jg@gmail.comslicc_includes = [] 10839219Spower.jg@gmail.comExport('slicc_includes') 10849219Spower.jg@gmail.com 10854202Sbinkertn@umich.edu# Walk the tree and execute all SConsopts scripts that wil add to the 10865863Snate@binkert.org# above variables 108710135SCurtis.Dunham@arm.comif GetOption('verbose'): 10888474Sgblack@eecs.umich.edu print "Reading SConsopts" 10895742Snate@binkert.orgfor bdir in [ base_dir ] + extras_dir_list: 10908268Ssteve.reinhardt@amd.com if not isdir(bdir): 10918268Ssteve.reinhardt@amd.com print "Error: directory '%s' does not exist" % bdir 10928268Ssteve.reinhardt@amd.com Exit(1) 10935742Snate@binkert.org for root, dirs, files in os.walk(bdir): 10945341Sstever@gmail.com if 'SConsopts' in files: 10958474Sgblack@eecs.umich.edu if GetOption('verbose'): 10968474Sgblack@eecs.umich.edu print "Reading", joinpath(root, 'SConsopts') 10975342Sstever@gmail.com SConscript(joinpath(root, 'SConsopts')) 10984202Sbinkertn@umich.edu 10994202Sbinkertn@umich.eduall_isa_list.sort() 11004202Sbinkertn@umich.edu 11015863Snate@binkert.orgsticky_vars.AddVariables( 11025863Snate@binkert.org EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 11036994Snate@binkert.org ListVariable('CPU_MODELS', 'CPU models', 11046994Snate@binkert.org sorted(n for n,m in CpuModel.dict.iteritems() if m.default), 110510319SAndreas.Sandberg@ARM.com sorted(CpuModel.dict.keys())), 11065863Snate@binkert.org BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 11075863Snate@binkert.org False), 11085863Snate@binkert.org BoolVariable('SS_COMPATIBLE_FP', 11095863Snate@binkert.org 'Make floating-point results compatible with SimpleScalar', 11105863Snate@binkert.org False), 11115863Snate@binkert.org BoolVariable('USE_SSE2', 11125863Snate@binkert.org 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 11135863Snate@binkert.org False), 11147840Snate@binkert.org BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), 11155863Snate@binkert.org BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 11165952Ssaidi@eecs.umich.edu BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False), 11179651SAndreas.Sandberg@ARM.com BoolVariable('USE_KVM', 'Enable hardware virtualized (KVM) CPU models', have_kvm), 11189219Spower.jg@gmail.com EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None', 11199219Spower.jg@gmail.com all_protocols), 11201869SN/A ) 11211858SN/A 11225863Snate@binkert.org# These variables get exported to #defines in config/*.hh (see src/SConscript). 11239420Sandreas.hansson@arm.comexport_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 'TARGET_ISA', 'CP_ANNOTATE', 11249986Sandreas@sandberg.pp.se 'USE_POSIX_CLOCK', 'PROTOCOL', 'HAVE_PROTOBUF', 11259986Sandreas@sandberg.pp.se 'HAVE_PERF_ATTR_EXCLUDE_HOST'] 11261858SN/A 1127955SN/A################################################### 1128955SN/A# 11291869SN/A# Define a SCons builder for configuration flag headers. 11301869SN/A# 11311869SN/A################################################### 11321869SN/A 11331869SN/A# This function generates a config header file that #defines the 11345863Snate@binkert.org# variable symbol to the current variable setting (0 or 1). The source 11355863Snate@binkert.org# operands are the name of the variable and a Value node containing the 11365863Snate@binkert.org# value of the variable. 11371869SN/Adef build_config_file(target, source, env): 11385863Snate@binkert.org (variable, value) = [s.get_contents() for s in source] 11391869SN/A f = file(str(target[0]), 'w') 11405863Snate@binkert.org print >> f, '#define', variable, value 11411869SN/A f.close() 11421869SN/A return None 11431869SN/A 11441869SN/A# Combine the two functions into a scons Action object. 11458483Sgblack@eecs.umich.educonfig_action = MakeAction(build_config_file, Transform("CONFIG H", 2)) 11461869SN/A 11471869SN/A# The emitter munges the source & target node lists to reflect what 11481869SN/A# we're really doing. 11491869SN/Adef config_emitter(target, source, env): 11505863Snate@binkert.org # extract variable name from Builder arg 11515863Snate@binkert.org variable = str(target[0]) 11521869SN/A # True target is config header file 11535863Snate@binkert.org target = joinpath('config', variable.lower() + '.hh') 11545863Snate@binkert.org val = env[variable] 11553356Sbinkertn@umich.edu if isinstance(val, bool): 11563356Sbinkertn@umich.edu # Force value to 0/1 11573356Sbinkertn@umich.edu val = int(val) 11583356Sbinkertn@umich.edu elif isinstance(val, str): 11593356Sbinkertn@umich.edu val = '"' + val + '"' 11604781Snate@binkert.org 11615863Snate@binkert.org # Sources are variable name & value (packaged in SCons Value nodes) 11625863Snate@binkert.org return ([target], [Value(variable), Value(val)]) 11631869SN/A 11641869SN/Aconfig_builder = Builder(emitter = config_emitter, action = config_action) 11651869SN/A 11666121Snate@binkert.orgmain.Append(BUILDERS = { 'ConfigFile' : config_builder }) 11671869SN/A 11682638Sstever@eecs.umich.edu# libelf build is shared across all configs in the build root. 11696121Snate@binkert.orgmain.SConscript('ext/libelf/SConscript', 11706121Snate@binkert.org variant_dir = joinpath(build_root, 'libelf')) 11712638Sstever@eecs.umich.edu 11725749Scws3k@cs.virginia.edu# gzstream build is shared across all configs in the build root. 11736121Snate@binkert.orgmain.SConscript('ext/gzstream/SConscript', 11746121Snate@binkert.org variant_dir = joinpath(build_root, 'gzstream')) 11755749Scws3k@cs.virginia.edu 11769537Satgutier@umich.edu# libfdt build is shared across all configs in the build root. 11779537Satgutier@umich.edumain.SConscript('ext/libfdt/SConscript', 11789537Satgutier@umich.edu variant_dir = joinpath(build_root, 'libfdt')) 11799537Satgutier@umich.edu 11809888Sandreas@sandberg.pp.se# fputils build is shared across all configs in the build root. 11819888Sandreas@sandberg.pp.semain.SConscript('ext/fputils/SConscript', 11829888Sandreas@sandberg.pp.se variant_dir = joinpath(build_root, 'fputils')) 11839888Sandreas@sandberg.pp.se 118410066Sandreas.hansson@arm.com# DRAMSim2 build is shared across all configs in the build root. 118510066Sandreas.hansson@arm.commain.SConscript('ext/dramsim2/SConscript', 118610066Sandreas.hansson@arm.com variant_dir = joinpath(build_root, 'dramsim2')) 118710066Sandreas.hansson@arm.com 118810428Sandreas.hansson@arm.com# DRAMPower build is shared across all configs in the build root. 118910428Sandreas.hansson@arm.commain.SConscript('ext/drampower/SConscript', 119010428Sandreas.hansson@arm.com variant_dir = joinpath(build_root, 'drampower')) 119110428Sandreas.hansson@arm.com 11921869SN/A################################################### 11931869SN/A# 11943546Sgblack@eecs.umich.edu# This function is used to set up a directory with switching headers 11953546Sgblack@eecs.umich.edu# 11963546Sgblack@eecs.umich.edu################################################### 11973546Sgblack@eecs.umich.edu 11986121Snate@binkert.orgmain['ALL_ISA_LIST'] = all_isa_list 119910196SCurtis.Dunham@arm.comall_isa_deps = {} 12005863Snate@binkert.orgdef make_switching_dir(dname, switch_headers, env): 12013546Sgblack@eecs.umich.edu # Generate the header. target[0] is the full path of the output 12023546Sgblack@eecs.umich.edu # header to generate. 'source' is a dummy variable, since we get the 12033546Sgblack@eecs.umich.edu # list of ISAs from env['ALL_ISA_LIST']. 12043546Sgblack@eecs.umich.edu def gen_switch_hdr(target, source, env): 12054781Snate@binkert.org fname = str(target[0]) 12066658Snate@binkert.org isa = env['TARGET_ISA'].lower() 120710196SCurtis.Dunham@arm.com try: 120810196SCurtis.Dunham@arm.com f = open(fname, 'w') 120910196SCurtis.Dunham@arm.com print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname)) 121010196SCurtis.Dunham@arm.com f.close() 121110196SCurtis.Dunham@arm.com except IOError: 121210196SCurtis.Dunham@arm.com print "Failed to create %s" % fname 121310196SCurtis.Dunham@arm.com raise 12143546Sgblack@eecs.umich.edu 12153546Sgblack@eecs.umich.edu # Build SCons Action object. 'varlist' specifies env vars that this 12163546Sgblack@eecs.umich.edu # action depends on; when env['ALL_ISA_LIST'] changes these actions 12173546Sgblack@eecs.umich.edu # should get re-executed. 12187756SAli.Saidi@ARM.com switch_hdr_action = MakeAction(gen_switch_hdr, 12197816Ssteve.reinhardt@amd.com Transform("GENERATE"), varlist=['ALL_ISA_LIST']) 12203546Sgblack@eecs.umich.edu 12213546Sgblack@eecs.umich.edu # Instantiate actions for each header 12223546Sgblack@eecs.umich.edu for hdr in switch_headers: 12233546Sgblack@eecs.umich.edu env.Command(hdr, [], switch_hdr_action) 122410196SCurtis.Dunham@arm.com 122510196SCurtis.Dunham@arm.com isa_target = Dir('.').up().name.lower().replace('_', '-') 122610196SCurtis.Dunham@arm.com env['PHONY_BASE'] = '#'+isa_target 122710196SCurtis.Dunham@arm.com all_isa_deps[isa_target] = None 122810196SCurtis.Dunham@arm.com 12294202Sbinkertn@umich.eduExport('make_switching_dir') 12303546Sgblack@eecs.umich.edu 123110196SCurtis.Dunham@arm.com# all-isas -> all-deps -> all-environs -> all_targets 123210196SCurtis.Dunham@arm.commain.Alias('#all-isas', []) 123310196SCurtis.Dunham@arm.commain.Alias('#all-deps', '#all-isas') 123410196SCurtis.Dunham@arm.com 123510196SCurtis.Dunham@arm.com# Dummy target to ensure all environments are created before telling 123610196SCurtis.Dunham@arm.com# SCons what to actually make (the command line arguments). We attach 123710196SCurtis.Dunham@arm.com# them to the dependence graph after the environments are complete. 123810196SCurtis.Dunham@arm.comORIG_BUILD_TARGETS = list(BUILD_TARGETS) # force a copy; gets closure to work. 123910196SCurtis.Dunham@arm.comdef environsComplete(target, source, env): 124010196SCurtis.Dunham@arm.com for t in ORIG_BUILD_TARGETS: 124110196SCurtis.Dunham@arm.com main.Depends('#all-targets', t) 124210196SCurtis.Dunham@arm.com 124310196SCurtis.Dunham@arm.com# Each build/* switching_dir attaches its *-environs target to #all-environs. 124410196SCurtis.Dunham@arm.commain.Append(BUILDERS = {'CompleteEnvirons' : 124510196SCurtis.Dunham@arm.com Builder(action=MakeAction(environsComplete, None))}) 124610196SCurtis.Dunham@arm.commain.CompleteEnvirons('#all-environs', []) 124710196SCurtis.Dunham@arm.com 124810196SCurtis.Dunham@arm.comdef doNothing(**ignored): pass 124910196SCurtis.Dunham@arm.commain.Append(BUILDERS = {'Dummy': Builder(action=MakeAction(doNothing, None))}) 125010196SCurtis.Dunham@arm.com 125110196SCurtis.Dunham@arm.com# The final target to which all the original targets ultimately get attached. 125210196SCurtis.Dunham@arm.commain.Dummy('#all-targets', '#all-environs') 125310196SCurtis.Dunham@arm.comBUILD_TARGETS[:] = ['#all-targets'] 125410196SCurtis.Dunham@arm.com 12553546Sgblack@eecs.umich.edu################################################### 12563546Sgblack@eecs.umich.edu# 1257955SN/A# Define build environments for selected configurations. 1258955SN/A# 1259955SN/A################################################### 1260955SN/A 12615863Snate@binkert.orgfor variant_path in variant_paths: 126210135SCurtis.Dunham@arm.com if not GetOption('silent'): 126310135SCurtis.Dunham@arm.com print "Building in", variant_path 12645343Sstever@gmail.com 12655343Sstever@gmail.com # Make a copy of the build-root environment to use for this config. 12666121Snate@binkert.org env = main.Clone() 12675863Snate@binkert.org env['BUILDDIR'] = variant_path 12684773Snate@binkert.org 12695863Snate@binkert.org # variant_dir is the tail component of build path, and is used to 12702632Sstever@eecs.umich.edu # determine the build parameters (e.g., 'ALPHA_SE') 12715863Snate@binkert.org (build_root, variant_dir) = splitpath(variant_path) 12722023SN/A 12735863Snate@binkert.org # Set env variables according to the build directory config. 12745863Snate@binkert.org sticky_vars.files = [] 12755863Snate@binkert.org # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 12765863Snate@binkert.org # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 12775863Snate@binkert.org # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 12785863Snate@binkert.org current_vars_file = joinpath(build_root, 'variables', variant_dir) 12795863Snate@binkert.org if isfile(current_vars_file): 12805863Snate@binkert.org sticky_vars.files.append(current_vars_file) 128110135SCurtis.Dunham@arm.com if not GetOption('silent'): 128210135SCurtis.Dunham@arm.com print "Using saved variables file %s" % current_vars_file 12832632Sstever@eecs.umich.edu else: 12845863Snate@binkert.org # Build dir-specific variables file doesn't exist. 12852023SN/A 12862632Sstever@eecs.umich.edu # Make sure the directory is there so we can create it later 12875863Snate@binkert.org opt_dir = dirname(current_vars_file) 12885342Sstever@gmail.com if not isdir(opt_dir): 12895863Snate@binkert.org mkdir(opt_dir) 12902632Sstever@eecs.umich.edu 12915863Snate@binkert.org # Get default build variables from source tree. Variables are 12925863Snate@binkert.org # normally determined by name of $VARIANT_DIR, but can be 12938267Ssteve.reinhardt@amd.com # overridden by '--default=' arg on command line. 12948120Sgblack@eecs.umich.edu default = GetOption('default') 12958267Ssteve.reinhardt@amd.com opts_dir = joinpath(main.root.abspath, 'build_opts') 12968267Ssteve.reinhardt@amd.com if default: 12978267Ssteve.reinhardt@amd.com default_vars_files = [joinpath(build_root, 'variables', default), 12988267Ssteve.reinhardt@amd.com joinpath(opts_dir, default)] 12998267Ssteve.reinhardt@amd.com else: 13008267Ssteve.reinhardt@amd.com default_vars_files = [joinpath(opts_dir, variant_dir)] 13018267Ssteve.reinhardt@amd.com existing_files = filter(isfile, default_vars_files) 13028267Ssteve.reinhardt@amd.com if existing_files: 13038267Ssteve.reinhardt@amd.com default_vars_file = existing_files[0] 13045863Snate@binkert.org sticky_vars.files.append(default_vars_file) 13055863Snate@binkert.org print "Variables file %s not found,\n using defaults in %s" \ 13065863Snate@binkert.org % (current_vars_file, default_vars_file) 13072632Sstever@eecs.umich.edu else: 13088267Ssteve.reinhardt@amd.com print "Error: cannot find variables file %s or " \ 13098267Ssteve.reinhardt@amd.com "default file(s) %s" \ 13108267Ssteve.reinhardt@amd.com % (current_vars_file, ' or '.join(default_vars_files)) 13112632Sstever@eecs.umich.edu Exit(1) 13121888SN/A 13135863Snate@binkert.org # Apply current variable settings to env 13145863Snate@binkert.org sticky_vars.Update(env) 13151858SN/A 13168120Sgblack@eecs.umich.edu help_texts["local_vars"] += \ 13178120Sgblack@eecs.umich.edu "Build variables for %s:\n" % variant_dir \ 13187756SAli.Saidi@ARM.com + sticky_vars.GenerateHelpText(env) 13192598SN/A 13205863Snate@binkert.org # Process variable settings. 13211858SN/A 13221858SN/A if not have_fenv and env['USE_FENV']: 13231858SN/A print "Warning: <fenv.h> not available; " \ 13245863Snate@binkert.org "forcing USE_FENV to False in", variant_dir + "." 13251858SN/A env['USE_FENV'] = False 13261858SN/A 13271858SN/A if not env['USE_FENV']: 13285863Snate@binkert.org print "Warning: No IEEE FP rounding mode control in", variant_dir + "." 13291871SN/A print " FP results may deviate slightly from other platforms." 13301858SN/A 13311858SN/A if env['EFENCE']: 13321858SN/A env.Append(LIBS=['efence']) 13331858SN/A 13349651SAndreas.Sandberg@ARM.com if env['USE_KVM']: 13359651SAndreas.Sandberg@ARM.com if not have_kvm: 13369651SAndreas.Sandberg@ARM.com print "Warning: Can not enable KVM, host seems to lack KVM support" 13379651SAndreas.Sandberg@ARM.com env['USE_KVM'] = False 13389900Sandreas@sandberg.pp.se elif not have_posix_timers: 13399900Sandreas@sandberg.pp.se print "Warning: Can not enable KVM, host seems to lack support " \ 13409900Sandreas@sandberg.pp.se "for POSIX timers" 13419900Sandreas@sandberg.pp.se env['USE_KVM'] = False 13429651SAndreas.Sandberg@ARM.com elif not is_isa_kvm_compatible(env['TARGET_ISA']): 13439651SAndreas.Sandberg@ARM.com print "Info: KVM support disabled due to unsupported host and " \ 13449651SAndreas.Sandberg@ARM.com "target ISA combination" 13459651SAndreas.Sandberg@ARM.com env['USE_KVM'] = False 13469651SAndreas.Sandberg@ARM.com 13479986Sandreas@sandberg.pp.se # Warn about missing optional functionality 13489986Sandreas@sandberg.pp.se if env['USE_KVM']: 13499986Sandreas@sandberg.pp.se if not main['HAVE_PERF_ATTR_EXCLUDE_HOST']: 13509986Sandreas@sandberg.pp.se print "Warning: perf_event headers lack support for the " \ 13519986Sandreas@sandberg.pp.se "exclude_host attribute. KVM instruction counts will " \ 13529986Sandreas@sandberg.pp.se "be inaccurate." 13539986Sandreas@sandberg.pp.se 13545863Snate@binkert.org # Save sticky variable settings back to current variables file 13555863Snate@binkert.org sticky_vars.Save(current_vars_file, env) 13561869SN/A 13571965SN/A if env['USE_SSE2']: 13587739Sgblack@eecs.umich.edu env.Append(CCFLAGS=['-msse2']) 13591965SN/A 13602761Sstever@eecs.umich.edu # The src/SConscript file sets up the build rules in 'env' according 13615863Snate@binkert.org # to the configured variables. It returns a list of environments, 13621869SN/A # one for each variant build (debug, opt, etc.) 136310196SCurtis.Dunham@arm.com SConscript('src/SConscript', variant_dir = variant_path, exports = 'env') 13641869SN/A 136510196SCurtis.Dunham@arm.comdef pairwise(iterable): 136610196SCurtis.Dunham@arm.com "s -> (s0,s1), (s1,s2), (s2, s3), ..." 136710196SCurtis.Dunham@arm.com a, b = itertools.tee(iterable) 136810196SCurtis.Dunham@arm.com b.next() 136910196SCurtis.Dunham@arm.com return itertools.izip(a, b) 137010196SCurtis.Dunham@arm.com 137110196SCurtis.Dunham@arm.com# Create false dependencies so SCons will parse ISAs, establish 137210196SCurtis.Dunham@arm.com# dependencies, and setup the build Environments serially. Either 137310196SCurtis.Dunham@arm.com# SCons (likely) and/or our SConscripts (possibly) cannot cope with -j 137410196SCurtis.Dunham@arm.com# greater than 1. It appears to be standard race condition stuff; it 137510196SCurtis.Dunham@arm.com# doesn't always fail, but usually, and the behaviors are different. 137610196SCurtis.Dunham@arm.com# Every time I tried to remove this, builds would fail in some 137710196SCurtis.Dunham@arm.com# creative new way. So, don't do that. You'll want to, though, because 137810196SCurtis.Dunham@arm.com# tests/SConscript takes a long time to make its Environments. 137910196SCurtis.Dunham@arm.comfor t1, t2 in pairwise(sorted(all_isa_deps.iterkeys())): 138010196SCurtis.Dunham@arm.com main.Depends('#%s-deps' % t2, '#%s-deps' % t1) 138110196SCurtis.Dunham@arm.com main.Depends('#%s-environs' % t2, '#%s-environs' % t1) 1382955SN/A 13838120Sgblack@eecs.umich.edu# base help text 13848120Sgblack@eecs.umich.eduHelp(''' 13858120Sgblack@eecs.umich.eduUsage: scons [scons options] [build variables] [target(s)] 13868120Sgblack@eecs.umich.edu 13878120Sgblack@eecs.umich.eduExtra scons options: 13888120Sgblack@eecs.umich.edu%(options)s 13898120Sgblack@eecs.umich.edu 13908120Sgblack@eecs.umich.eduGlobal build variables: 13918120Sgblack@eecs.umich.edu%(global_vars)s 13928120Sgblack@eecs.umich.edu 13938120Sgblack@eecs.umich.edu%(local_vars)s 13948120Sgblack@eecs.umich.edu''' % help_texts) 1395