SConstruct revision 10428
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') 1868120Sgblack@eecs.umich.edu 1878947Sandreas.hansson@arm.comtermcap = get_termcap(GetOption('use_colors')) 1887816Ssteve.reinhardt@amd.com 1895871Snate@binkert.org######################################################################## 1905871Snate@binkert.org# 1916121Snate@binkert.org# Set up the main build environment. 1925871Snate@binkert.org# 1935871Snate@binkert.org######################################################################## 1949926Sstan.czerniawski@arm.com 1959926Sstan.czerniawski@arm.com# export TERM so that clang reports errors in color 1969119Sandreas.hansson@arm.comuse_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 19710068Sandreas.hansson@arm.com 'LIBRARY_PATH', 'PATH', 'PKG_CONFIG_PATH', 'PROTOC', 19810068Sandreas.hansson@arm.com 'PYTHONPATH', 'RANLIB', 'SWIG', 'TERM' ]) 199955SN/A 2009416SAndreas.Sandberg@ARM.comuse_prefixes = [ 2019416SAndreas.Sandberg@ARM.com "M5", # M5 configuration (e.g., path to kernels) 2029416SAndreas.Sandberg@ARM.com "DISTCC_", # distcc (distributed compiler wrapper) configuration 2039416SAndreas.Sandberg@ARM.com "CCACHE_", # ccache (caching compiler wrapper) configuration 2049416SAndreas.Sandberg@ARM.com "CCC_", # clang static analyzer configuration 2059416SAndreas.Sandberg@ARM.com ] 2069416SAndreas.Sandberg@ARM.com 2075871Snate@binkert.orguse_env = {} 2085871Snate@binkert.orgfor key,val in os.environ.iteritems(): 2099416SAndreas.Sandberg@ARM.com if key in use_vars or \ 2109416SAndreas.Sandberg@ARM.com any([key.startswith(prefix) for prefix in use_prefixes]): 2115871Snate@binkert.org use_env[key] = val 212955SN/A 2136121Snate@binkert.orgmain = Environment(ENV=use_env) 2148881Smarc.orr@gmail.commain.Decider('MD5-timestamp') 2156121Snate@binkert.orgmain.root = Dir(".") # The current directory (where this file lives). 2166121Snate@binkert.orgmain.srcdir = Dir("src") # The source directory 2171533SN/A 2189239Sandreas.hansson@arm.commain_dict_keys = main.Dictionary().keys() 2199239Sandreas.hansson@arm.com 2209239Sandreas.hansson@arm.com# Check that we have a C/C++ compiler 2219239Sandreas.hansson@arm.comif not ('CC' in main_dict_keys and 'CXX' in main_dict_keys): 2229239Sandreas.hansson@arm.com print "No C++ compiler installed (package g++ on Ubuntu and RedHat)" 2239239Sandreas.hansson@arm.com Exit(1) 2249239Sandreas.hansson@arm.com 2259239Sandreas.hansson@arm.com# Check that swig is present 2269239Sandreas.hansson@arm.comif not 'SWIG' in main_dict_keys: 2279239Sandreas.hansson@arm.com print "swig is not installed (package swig on Ubuntu and RedHat)" 2289239Sandreas.hansson@arm.com Exit(1) 2299239Sandreas.hansson@arm.com 2306655Snate@binkert.org# add useful python code PYTHONPATH so it can be used by subprocesses 2316655Snate@binkert.org# as well 2326655Snate@binkert.orgmain.AppendENVPath('PYTHONPATH', extra_python_paths) 2336655Snate@binkert.org 2345871Snate@binkert.org######################################################################## 2355871Snate@binkert.org# 2365863Snate@binkert.org# Mercurial Stuff. 2375871Snate@binkert.org# 2388878Ssteve.reinhardt@amd.com# If the gem5 directory is a mercurial repository, we should do some 2395871Snate@binkert.org# extra things. 2405871Snate@binkert.org# 2415871Snate@binkert.org######################################################################## 2425863Snate@binkert.org 2436121Snate@binkert.orghgdir = main.root.Dir(".hg") 2445863Snate@binkert.org 2455871Snate@binkert.orgmercurial_style_message = """ 2468336Ssteve.reinhardt@amd.comYou're missing the gem5 style hook, which automatically checks your code 2478336Ssteve.reinhardt@amd.comagainst the gem5 style rules on hg commit and qrefresh commands. This 2488336Ssteve.reinhardt@amd.comscript will now install the hook in your .hg/hgrc file. 2498336Ssteve.reinhardt@amd.comPress enter to continue, or ctrl-c to abort: """ 2504678Snate@binkert.org 2518336Ssteve.reinhardt@amd.commercurial_style_hook = """ 2528336Ssteve.reinhardt@amd.com# The following lines were automatically added by gem5/SConstruct 2538336Ssteve.reinhardt@amd.com# to provide the gem5 style-checking hooks 2544678Snate@binkert.org[extensions] 2554678Snate@binkert.orgstyle = %s/util/style.py 2564678Snate@binkert.org 2574678Snate@binkert.org[hooks] 2587827Snate@binkert.orgpretxncommit.style = python:style.check_style 2597827Snate@binkert.orgpre-qrefresh.style = python:style.check_style 2608336Ssteve.reinhardt@amd.com# End of SConstruct additions 2614678Snate@binkert.org 2628336Ssteve.reinhardt@amd.com""" % (main.root.abspath) 2638336Ssteve.reinhardt@amd.com 2648336Ssteve.reinhardt@amd.commercurial_lib_not_found = """ 2658336Ssteve.reinhardt@amd.comMercurial libraries cannot be found, ignoring style hook. If 2668336Ssteve.reinhardt@amd.comyou are a gem5 developer, please fix this and run the style 2678336Ssteve.reinhardt@amd.comhook. It is important. 2685871Snate@binkert.org""" 2695871Snate@binkert.org 2708336Ssteve.reinhardt@amd.com# Check for style hook and prompt for installation if it's not there. 2718336Ssteve.reinhardt@amd.com# Skip this if --ignore-style was specified, there's no .hg dir to 2728336Ssteve.reinhardt@amd.com# install a hook in, or there's no interactive terminal to prompt. 2738336Ssteve.reinhardt@amd.comif not GetOption('ignore_style') and hgdir.exists() and sys.stdin.isatty(): 2748336Ssteve.reinhardt@amd.com style_hook = True 2755871Snate@binkert.org try: 2768336Ssteve.reinhardt@amd.com from mercurial import ui 2778336Ssteve.reinhardt@amd.com ui = ui.ui() 2788336Ssteve.reinhardt@amd.com ui.readconfig(hgdir.File('hgrc').abspath) 2798336Ssteve.reinhardt@amd.com style_hook = ui.config('hooks', 'pretxncommit.style', None) and \ 2808336Ssteve.reinhardt@amd.com ui.config('hooks', 'pre-qrefresh.style', None) 2814678Snate@binkert.org except ImportError: 2825871Snate@binkert.org print mercurial_lib_not_found 2834678Snate@binkert.org 2848336Ssteve.reinhardt@amd.com if not style_hook: 2858336Ssteve.reinhardt@amd.com print mercurial_style_message, 2868336Ssteve.reinhardt@amd.com # continue unless user does ctrl-c/ctrl-d etc. 2878336Ssteve.reinhardt@amd.com try: 2888336Ssteve.reinhardt@amd.com raw_input() 2898336Ssteve.reinhardt@amd.com except: 2908336Ssteve.reinhardt@amd.com print "Input exception, exiting scons.\n" 2918336Ssteve.reinhardt@amd.com sys.exit(1) 2928336Ssteve.reinhardt@amd.com hgrc_path = '%s/.hg/hgrc' % main.root.abspath 2938336Ssteve.reinhardt@amd.com print "Adding style hook to", hgrc_path, "\n" 2948336Ssteve.reinhardt@amd.com try: 2958336Ssteve.reinhardt@amd.com hgrc = open(hgrc_path, 'a') 2968336Ssteve.reinhardt@amd.com hgrc.write(mercurial_style_hook) 2978336Ssteve.reinhardt@amd.com hgrc.close() 2988336Ssteve.reinhardt@amd.com except: 2998336Ssteve.reinhardt@amd.com print "Error updating", hgrc_path 3008336Ssteve.reinhardt@amd.com sys.exit(1) 3015871Snate@binkert.org 3026121Snate@binkert.org 303955SN/A################################################### 304955SN/A# 3052632Sstever@eecs.umich.edu# Figure out which configurations to set up based on the path(s) of 3062632Sstever@eecs.umich.edu# the target(s). 307955SN/A# 308955SN/A################################################### 309955SN/A 310955SN/A# Find default configuration & binary. 3118878Ssteve.reinhardt@amd.comDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA/gem5.debug')) 312955SN/A 3132632Sstever@eecs.umich.edu# helper function: find last occurrence of element in list 3142632Sstever@eecs.umich.edudef rfind(l, elt, offs = -1): 3152632Sstever@eecs.umich.edu for i in range(len(l)+offs, 0, -1): 3162632Sstever@eecs.umich.edu if l[i] == elt: 3172632Sstever@eecs.umich.edu return i 3182632Sstever@eecs.umich.edu raise ValueError, "element not found" 3192632Sstever@eecs.umich.edu 3208268Ssteve.reinhardt@amd.com# Take a list of paths (or SCons Nodes) and return a list with all 3218268Ssteve.reinhardt@amd.com# paths made absolute and ~-expanded. Paths will be interpreted 3228268Ssteve.reinhardt@amd.com# relative to the launch directory unless a different root is provided 3238268Ssteve.reinhardt@amd.comdef makePathListAbsolute(path_list, root=GetLaunchDir()): 3248268Ssteve.reinhardt@amd.com return [abspath(joinpath(root, expanduser(str(p)))) 3258268Ssteve.reinhardt@amd.com for p in path_list] 3268268Ssteve.reinhardt@amd.com 3272632Sstever@eecs.umich.edu# Each target must have 'build' in the interior of the path; the 3282632Sstever@eecs.umich.edu# directory below this will determine the build parameters. For 3292632Sstever@eecs.umich.edu# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 3302632Sstever@eecs.umich.edu# recognize that ALPHA_SE specifies the configuration because it 3318268Ssteve.reinhardt@amd.com# follow 'build' in the build path. 3322632Sstever@eecs.umich.edu 3338268Ssteve.reinhardt@amd.com# The funky assignment to "[:]" is needed to replace the list contents 3348268Ssteve.reinhardt@amd.com# in place rather than reassign the symbol to a new list, which 3358268Ssteve.reinhardt@amd.com# doesn't work (obviously!). 3368268Ssteve.reinhardt@amd.comBUILD_TARGETS[:] = makePathListAbsolute(BUILD_TARGETS) 3373718Sstever@eecs.umich.edu 3382634Sstever@eecs.umich.edu# Generate a list of the unique build roots and configs that the 3392634Sstever@eecs.umich.edu# collected targets reference. 3405863Snate@binkert.orgvariant_paths = [] 3412638Sstever@eecs.umich.edubuild_root = None 3428268Ssteve.reinhardt@amd.comfor t in BUILD_TARGETS: 3432632Sstever@eecs.umich.edu path_dirs = t.split('/') 3442632Sstever@eecs.umich.edu try: 3452632Sstever@eecs.umich.edu build_top = rfind(path_dirs, 'build', -2) 3462632Sstever@eecs.umich.edu except: 3472632Sstever@eecs.umich.edu print "Error: no non-leaf 'build' dir found on target path", t 3481858SN/A Exit(1) 3493716Sstever@eecs.umich.edu this_build_root = joinpath('/',*path_dirs[:build_top+1]) 3502638Sstever@eecs.umich.edu if not build_root: 3512638Sstever@eecs.umich.edu build_root = this_build_root 3522638Sstever@eecs.umich.edu else: 3532638Sstever@eecs.umich.edu if this_build_root != build_root: 3542638Sstever@eecs.umich.edu print "Error: build targets not under same build root\n"\ 3552638Sstever@eecs.umich.edu " %s\n %s" % (build_root, this_build_root) 3562638Sstever@eecs.umich.edu Exit(1) 3575863Snate@binkert.org variant_path = joinpath('/',*path_dirs[:build_top+2]) 3585863Snate@binkert.org if variant_path not in variant_paths: 3595863Snate@binkert.org variant_paths.append(variant_path) 360955SN/A 3615341Sstever@gmail.com# Make sure build_root exists (might not if this is the first build there) 3625341Sstever@gmail.comif not isdir(build_root): 3635863Snate@binkert.org mkdir(build_root) 3647756SAli.Saidi@ARM.commain['BUILDROOT'] = build_root 3655341Sstever@gmail.com 3666121Snate@binkert.orgExport('main') 3674494Ssaidi@eecs.umich.edu 3686121Snate@binkert.orgmain.SConsignFile(joinpath(build_root, "sconsign")) 3691105SN/A 3702667Sstever@eecs.umich.edu# Default duplicate option is to use hard links, but this messes up 3712667Sstever@eecs.umich.edu# when you use emacs to edit a file in the target dir, as emacs moves 3722667Sstever@eecs.umich.edu# file to file~ then copies to file, breaking the link. Symbolic 3732667Sstever@eecs.umich.edu# (soft) links work better. 3746121Snate@binkert.orgmain.SetOption('duplicate', 'soft-copy') 3752667Sstever@eecs.umich.edu 3765341Sstever@gmail.com# 3775863Snate@binkert.org# Set up global sticky variables... these are common to an entire build 3785341Sstever@gmail.com# tree (not specific to a particular build like ALPHA_SE) 3795341Sstever@gmail.com# 3805341Sstever@gmail.com 3818120Sgblack@eecs.umich.eduglobal_vars_file = joinpath(build_root, 'variables.global') 3825341Sstever@gmail.com 3838120Sgblack@eecs.umich.eduglobal_vars = Variables(global_vars_file, args=ARGUMENTS) 3845341Sstever@gmail.com 3858120Sgblack@eecs.umich.eduglobal_vars.AddVariables( 3866121Snate@binkert.org ('CC', 'C compiler', environ.get('CC', main['CC'])), 3876121Snate@binkert.org ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 3888980Ssteve.reinhardt@amd.com ('SWIG', 'SWIG tool', environ.get('SWIG', main['SWIG'])), 3899396Sandreas.hansson@arm.com ('PROTOC', 'protoc tool', environ.get('PROTOC', 'protoc')), 3905397Ssaidi@eecs.umich.edu ('BATCH', 'Use batch pool for build and tests', False), 3915397Ssaidi@eecs.umich.edu ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 3927727SAli.Saidi@ARM.com ('M5_BUILD_CACHE', 'Cache built objects in this directory', False), 3938268Ssteve.reinhardt@amd.com ('EXTRAS', 'Add extra directories to the compilation', '') 3946168Snate@binkert.org ) 3955341Sstever@gmail.com 3968120Sgblack@eecs.umich.edu# Update main environment with values from ARGUMENTS & global_vars_file 3978120Sgblack@eecs.umich.eduglobal_vars.Update(main) 3988120Sgblack@eecs.umich.eduhelp_texts["global_vars"] += global_vars.GenerateHelpText(main) 3996814Sgblack@eecs.umich.edu 4005863Snate@binkert.org# Save sticky variable settings back to current variables file 4018120Sgblack@eecs.umich.eduglobal_vars.Save(global_vars_file, main) 4025341Sstever@gmail.com 4035863Snate@binkert.org# Parse EXTRAS variable to build list of all directories where we're 4048268Ssteve.reinhardt@amd.com# look for sources etc. This list is exported as extras_dir_list. 4056121Snate@binkert.orgbase_dir = main.srcdir.abspath 4066121Snate@binkert.orgif main['EXTRAS']: 4078268Ssteve.reinhardt@amd.com extras_dir_list = makePathListAbsolute(main['EXTRAS'].split(':')) 4085742Snate@binkert.orgelse: 4095742Snate@binkert.org extras_dir_list = [] 4105341Sstever@gmail.com 4115742Snate@binkert.orgExport('base_dir') 4125742Snate@binkert.orgExport('extras_dir_list') 4135341Sstever@gmail.com 4146017Snate@binkert.org# the ext directory should be on the #includes path 4156121Snate@binkert.orgmain.Append(CPPPATH=[Dir('ext')]) 4166017Snate@binkert.org 4177816Ssteve.reinhardt@amd.comdef strip_build_path(path, env): 4187756SAli.Saidi@ARM.com path = str(path) 4197756SAli.Saidi@ARM.com variant_base = env['BUILDROOT'] + os.path.sep 4207756SAli.Saidi@ARM.com if path.startswith(variant_base): 4217756SAli.Saidi@ARM.com path = path[len(variant_base):] 4227756SAli.Saidi@ARM.com elif path.startswith('build/'): 4237756SAli.Saidi@ARM.com path = path[6:] 4247756SAli.Saidi@ARM.com return path 4257756SAli.Saidi@ARM.com 4267816Ssteve.reinhardt@amd.com# Generate a string of the form: 4277816Ssteve.reinhardt@amd.com# common/path/prefix/src1, src2 -> tgt1, tgt2 4287816Ssteve.reinhardt@amd.com# to print while building. 4297816Ssteve.reinhardt@amd.comclass Transform(object): 4307816Ssteve.reinhardt@amd.com # all specific color settings should be here and nowhere else 4317816Ssteve.reinhardt@amd.com tool_color = termcap.Normal 4327816Ssteve.reinhardt@amd.com pfx_color = termcap.Yellow 4337816Ssteve.reinhardt@amd.com srcs_color = termcap.Yellow + termcap.Bold 4347816Ssteve.reinhardt@amd.com arrow_color = termcap.Blue + termcap.Bold 4357816Ssteve.reinhardt@amd.com tgts_color = termcap.Yellow + termcap.Bold 4367756SAli.Saidi@ARM.com 4377816Ssteve.reinhardt@amd.com def __init__(self, tool, max_sources=99): 4387816Ssteve.reinhardt@amd.com self.format = self.tool_color + (" [%8s] " % tool) \ 4397816Ssteve.reinhardt@amd.com + self.pfx_color + "%s" \ 4407816Ssteve.reinhardt@amd.com + self.srcs_color + "%s" \ 4417816Ssteve.reinhardt@amd.com + self.arrow_color + " -> " \ 4427816Ssteve.reinhardt@amd.com + self.tgts_color + "%s" \ 4437816Ssteve.reinhardt@amd.com + termcap.Normal 4447816Ssteve.reinhardt@amd.com self.max_sources = max_sources 4457816Ssteve.reinhardt@amd.com 4467816Ssteve.reinhardt@amd.com def __call__(self, target, source, env, for_signature=None): 4477816Ssteve.reinhardt@amd.com # truncate source list according to max_sources param 4487816Ssteve.reinhardt@amd.com source = source[0:self.max_sources] 4497816Ssteve.reinhardt@amd.com def strip(f): 4507816Ssteve.reinhardt@amd.com return strip_build_path(str(f), env) 4517816Ssteve.reinhardt@amd.com if len(source) > 0: 4527816Ssteve.reinhardt@amd.com srcs = map(strip, source) 4537816Ssteve.reinhardt@amd.com else: 4547816Ssteve.reinhardt@amd.com srcs = [''] 4557816Ssteve.reinhardt@amd.com tgts = map(strip, target) 4567816Ssteve.reinhardt@amd.com # surprisingly, os.path.commonprefix is a dumb char-by-char string 4577816Ssteve.reinhardt@amd.com # operation that has nothing to do with paths. 4587816Ssteve.reinhardt@amd.com com_pfx = os.path.commonprefix(srcs + tgts) 4597816Ssteve.reinhardt@amd.com com_pfx_len = len(com_pfx) 4607816Ssteve.reinhardt@amd.com if com_pfx: 4617816Ssteve.reinhardt@amd.com # do some cleanup and sanity checking on common prefix 4627816Ssteve.reinhardt@amd.com if com_pfx[-1] == ".": 4637816Ssteve.reinhardt@amd.com # prefix matches all but file extension: ok 4647816Ssteve.reinhardt@amd.com # back up one to change 'foo.cc -> o' to 'foo.cc -> .o' 4657816Ssteve.reinhardt@amd.com com_pfx = com_pfx[0:-1] 4667816Ssteve.reinhardt@amd.com elif com_pfx[-1] == "/": 4677816Ssteve.reinhardt@amd.com # common prefix is directory path: OK 4687816Ssteve.reinhardt@amd.com pass 4697816Ssteve.reinhardt@amd.com else: 4707816Ssteve.reinhardt@amd.com src0_len = len(srcs[0]) 4717816Ssteve.reinhardt@amd.com tgt0_len = len(tgts[0]) 4727816Ssteve.reinhardt@amd.com if src0_len == com_pfx_len: 4737816Ssteve.reinhardt@amd.com # source is a substring of target, OK 4747816Ssteve.reinhardt@amd.com pass 4757816Ssteve.reinhardt@amd.com elif tgt0_len == com_pfx_len: 4767816Ssteve.reinhardt@amd.com # target is a substring of source, need to back up to 4777816Ssteve.reinhardt@amd.com # avoid empty string on RHS of arrow 4787816Ssteve.reinhardt@amd.com sep_idx = com_pfx.rfind(".") 4797816Ssteve.reinhardt@amd.com if sep_idx != -1: 4807816Ssteve.reinhardt@amd.com com_pfx = com_pfx[0:sep_idx] 4817816Ssteve.reinhardt@amd.com else: 4827816Ssteve.reinhardt@amd.com com_pfx = '' 4837816Ssteve.reinhardt@amd.com elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".": 4847816Ssteve.reinhardt@amd.com # still splitting at file extension: ok 4857816Ssteve.reinhardt@amd.com pass 4867816Ssteve.reinhardt@amd.com else: 4877816Ssteve.reinhardt@amd.com # probably a fluke; ignore it 4887816Ssteve.reinhardt@amd.com com_pfx = '' 4897816Ssteve.reinhardt@amd.com # recalculate length in case com_pfx was modified 4907816Ssteve.reinhardt@amd.com com_pfx_len = len(com_pfx) 4917816Ssteve.reinhardt@amd.com def fmt(files): 4927816Ssteve.reinhardt@amd.com f = map(lambda s: s[com_pfx_len:], files) 4937816Ssteve.reinhardt@amd.com return ', '.join(f) 4947816Ssteve.reinhardt@amd.com return self.format % (com_pfx, fmt(srcs), fmt(tgts)) 4957816Ssteve.reinhardt@amd.com 4967816Ssteve.reinhardt@amd.comExport('Transform') 4977816Ssteve.reinhardt@amd.com 4988947Sandreas.hansson@arm.com# enable the regression script to use the termcap 4998947Sandreas.hansson@arm.commain['TERMCAP'] = termcap 5007756SAli.Saidi@ARM.com 5018120Sgblack@eecs.umich.eduif GetOption('verbose'): 5027756SAli.Saidi@ARM.com def MakeAction(action, string, *args, **kwargs): 5037756SAli.Saidi@ARM.com return Action(action, *args, **kwargs) 5047756SAli.Saidi@ARM.comelse: 5057756SAli.Saidi@ARM.com MakeAction = Action 5067816Ssteve.reinhardt@amd.com main['CCCOMSTR'] = Transform("CC") 5077816Ssteve.reinhardt@amd.com main['CXXCOMSTR'] = Transform("CXX") 5087816Ssteve.reinhardt@amd.com main['ASCOMSTR'] = Transform("AS") 5097816Ssteve.reinhardt@amd.com main['SWIGCOMSTR'] = Transform("SWIG") 5107816Ssteve.reinhardt@amd.com main['ARCOMSTR'] = Transform("AR", 0) 5117816Ssteve.reinhardt@amd.com main['LINKCOMSTR'] = Transform("LINK", 0) 5127816Ssteve.reinhardt@amd.com main['RANLIBCOMSTR'] = Transform("RANLIB", 0) 5137816Ssteve.reinhardt@amd.com main['M4COMSTR'] = Transform("M4") 5147816Ssteve.reinhardt@amd.com main['SHCCCOMSTR'] = Transform("SHCC") 5157816Ssteve.reinhardt@amd.com main['SHCXXCOMSTR'] = Transform("SHCXX") 5167756SAli.Saidi@ARM.comExport('MakeAction') 5177756SAli.Saidi@ARM.com 5189227Sandreas.hansson@arm.com# Initialize the Link-Time Optimization (LTO) flags 5199227Sandreas.hansson@arm.commain['LTO_CCFLAGS'] = [] 5209227Sandreas.hansson@arm.commain['LTO_LDFLAGS'] = [] 5219227Sandreas.hansson@arm.com 5229590Sandreas@sandberg.pp.se# According to the readme, tcmalloc works best if the compiler doesn't 5239590Sandreas@sandberg.pp.se# assume that we're using the builtin malloc and friends. These flags 5249590Sandreas@sandberg.pp.se# are compiler-specific, so we need to set them after we detect which 5259590Sandreas@sandberg.pp.se# compiler we're using. 5269590Sandreas@sandberg.pp.semain['TCMALLOC_CCFLAGS'] = [] 5279590Sandreas@sandberg.pp.se 5286654Snate@binkert.orgCXX_version = readCommand([main['CXX'],'--version'], exception=False) 5296654Snate@binkert.orgCXX_V = readCommand([main['CXX'],'-V'], exception=False) 5305871Snate@binkert.org 5316121Snate@binkert.orgmain['GCC'] = CXX_version and CXX_version.find('g++') >= 0 5328946Sandreas.hansson@arm.commain['CLANG'] = CXX_version and CXX_version.find('clang') >= 0 5339419Sandreas.hansson@arm.comif main['GCC'] + main['CLANG'] > 1: 5343940Ssaidi@eecs.umich.edu print 'Error: How can we have two at the same time?' 5353918Ssaidi@eecs.umich.edu Exit(1) 5363918Ssaidi@eecs.umich.edu 5371858SN/A# Set up default C++ compiler flags 5389556Sandreas.hansson@arm.comif main['GCC'] or main['CLANG']: 5399556Sandreas.hansson@arm.com # As gcc and clang share many flags, do the common parts here 5409556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-pipe']) 5419556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-fno-strict-aliasing']) 5429556Sandreas.hansson@arm.com # Enable -Wall and then disable the few warnings that we 5439556Sandreas.hansson@arm.com # consistently violate 5449556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef']) 5459556Sandreas.hansson@arm.com # We always compile using C++11, but only gcc >= 4.7 and clang 3.1 5469556Sandreas.hansson@arm.com # actually use that name, so we stick with c++0x 5479556Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-std=c++0x']) 5489556Sandreas.hansson@arm.com # Add selected sanity checks from -Wextra 5499556Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-Wmissing-field-initializers', 5509556Sandreas.hansson@arm.com '-Woverloaded-virtual']) 5519556Sandreas.hansson@arm.comelse: 5529556Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 5539556Sandreas.hansson@arm.com print "Don't know what compiler options to use for your compiler." 5549556Sandreas.hansson@arm.com print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 5559556Sandreas.hansson@arm.com print termcap.Yellow + ' version:' + termcap.Normal, 5569556Sandreas.hansson@arm.com if not CXX_version: 5579556Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 5589556Sandreas.hansson@arm.com termcap.Normal 5599556Sandreas.hansson@arm.com else: 5609556Sandreas.hansson@arm.com print CXX_version.replace('\n', '<nl>') 5619556Sandreas.hansson@arm.com print " If you're trying to use a compiler other than GCC" 5629556Sandreas.hansson@arm.com print " or clang, there appears to be something wrong with your" 5639556Sandreas.hansson@arm.com print " environment." 5649556Sandreas.hansson@arm.com print " " 5659556Sandreas.hansson@arm.com print " If you are trying to use a compiler other than those listed" 5669556Sandreas.hansson@arm.com print " above you will need to ease fix SConstruct and " 5679556Sandreas.hansson@arm.com print " src/SConscript to support that compiler." 5689556Sandreas.hansson@arm.com Exit(1) 5699556Sandreas.hansson@arm.com 5706121Snate@binkert.orgif main['GCC']: 57110238Sandreas.hansson@arm.com # Check for a supported version of gcc. >= 4.6 is chosen for its 57210238Sandreas.hansson@arm.com # level of c++11 support. See 57310238Sandreas.hansson@arm.com # http://gcc.gnu.org/projects/cxx0x.html for details. 4.6 is also 57410238Sandreas.hansson@arm.com # the first version with proper LTO support. 5759420Sandreas.hansson@arm.com gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 57610238Sandreas.hansson@arm.com if compareVersions(gcc_version, "4.6") < 0: 57710238Sandreas.hansson@arm.com print 'Error: gcc version 4.6 or newer required.' 5789420Sandreas.hansson@arm.com print ' Installed version:', gcc_version 5799420Sandreas.hansson@arm.com Exit(1) 5809420Sandreas.hansson@arm.com 5819420Sandreas.hansson@arm.com main['GCC_VERSION'] = gcc_version 5829420Sandreas.hansson@arm.com 58310264Sandreas.hansson@arm.com # gcc from version 4.8 and above generates "rep; ret" instructions 58410264Sandreas.hansson@arm.com # to avoid performance penalties on certain AMD chips. Older 58510264Sandreas.hansson@arm.com # assemblers detect this as an error, "Error: expecting string 58610264Sandreas.hansson@arm.com # instruction after `rep'" 58710264Sandreas.hansson@arm.com if compareVersions(gcc_version, "4.8") > 0: 58810264Sandreas.hansson@arm.com as_version = readCommand([main['AS'], '-v', '/dev/null'], 58910264Sandreas.hansson@arm.com exception=False).split() 59010264Sandreas.hansson@arm.com 59110264Sandreas.hansson@arm.com if not as_version or compareVersions(as_version[-1], "2.23") < 0: 59210264Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 59310264Sandreas.hansson@arm.com 'Warning: This combination of gcc and binutils have' + \ 59410264Sandreas.hansson@arm.com ' known incompatibilities.\n' + \ 59510264Sandreas.hansson@arm.com ' If you encounter build problems, please update ' + \ 59610264Sandreas.hansson@arm.com 'binutils to 2.23.' + \ 59710264Sandreas.hansson@arm.com termcap.Normal 59810264Sandreas.hansson@arm.com 59910238Sandreas.hansson@arm.com # Add the appropriate Link-Time Optimization (LTO) flags 60010238Sandreas.hansson@arm.com # unless LTO is explicitly turned off. Note that these flags 60110238Sandreas.hansson@arm.com # are only used by the fast target. 60210238Sandreas.hansson@arm.com if not GetOption('no_lto'): 60310238Sandreas.hansson@arm.com # Pass the LTO flag when compiling to produce GIMPLE 60410238Sandreas.hansson@arm.com # output, we merely create the flags here and only append 60510416Sandreas.hansson@arm.com # them later 60610238Sandreas.hansson@arm.com main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 6079227Sandreas.hansson@arm.com 60810238Sandreas.hansson@arm.com # Use the same amount of jobs for LTO as we are running 60910416Sandreas.hansson@arm.com # scons with 61010416Sandreas.hansson@arm.com main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 6119227Sandreas.hansson@arm.com 6129590Sandreas@sandberg.pp.se main.Append(TCMALLOC_CCFLAGS=['-fno-builtin-malloc', '-fno-builtin-calloc', 6139590Sandreas@sandberg.pp.se '-fno-builtin-realloc', '-fno-builtin-free']) 6149590Sandreas@sandberg.pp.se 6158737Skoansin.tan@gmail.comelif main['CLANG']: 61610238Sandreas.hansson@arm.com # Check for a supported version of clang, >= 3.0 is needed to 61710238Sandreas.hansson@arm.com # support similar features as gcc 4.6. See 6189420Sandreas.hansson@arm.com # http://clang.llvm.org/cxx_status.html for details 6198737Skoansin.tan@gmail.com clang_version_re = re.compile(".* version (\d+\.\d+)") 62010106SMitch.Hayenga@arm.com clang_version_match = clang_version_re.search(CXX_version) 6218737Skoansin.tan@gmail.com if (clang_version_match): 6228737Skoansin.tan@gmail.com clang_version = clang_version_match.groups()[0] 62310238Sandreas.hansson@arm.com if compareVersions(clang_version, "3.0") < 0: 62410238Sandreas.hansson@arm.com print 'Error: clang version 3.0 or newer required.' 6258737Skoansin.tan@gmail.com print ' Installed version:', clang_version 6268737Skoansin.tan@gmail.com Exit(1) 6278737Skoansin.tan@gmail.com else: 6288737Skoansin.tan@gmail.com print 'Error: Unable to determine clang version.' 6298737Skoansin.tan@gmail.com Exit(1) 6308737Skoansin.tan@gmail.com 6319556Sandreas.hansson@arm.com # clang has a few additional warnings that we disable, 6329556Sandreas.hansson@arm.com # tautological comparisons are allowed due to unsigned integers 6339556Sandreas.hansson@arm.com # being compared to constants that happen to be 0, and extraneous 6349556Sandreas.hansson@arm.com # parantheses are allowed due to Ruby's printing of the AST, 6359556Sandreas.hansson@arm.com # finally self assignments are allowed as the generated CPU code 6369556Sandreas.hansson@arm.com # is relying on this 6379556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-Wno-tautological-compare', 6389556Sandreas.hansson@arm.com '-Wno-parentheses', 63910278SAndreas.Sandberg@ARM.com '-Wno-self-assign', 64010278SAndreas.Sandberg@ARM.com # Some versions of libstdc++ (4.8?) seem to 64110278SAndreas.Sandberg@ARM.com # use struct hash and class hash 64210278SAndreas.Sandberg@ARM.com # interchangeably. 64310278SAndreas.Sandberg@ARM.com '-Wno-mismatched-tags', 64410278SAndreas.Sandberg@ARM.com ]) 6459556Sandreas.hansson@arm.com 6469590Sandreas@sandberg.pp.se main.Append(TCMALLOC_CCFLAGS=['-fno-builtin']) 6479590Sandreas@sandberg.pp.se 6489420Sandreas.hansson@arm.com # On Mac OS X/Darwin we need to also use libc++ (part of XCode) as 6499846Sandreas.hansson@arm.com # opposed to libstdc++, as the later is dated. 6509846Sandreas.hansson@arm.com if sys.platform == "darwin": 6519846Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-stdlib=libc++']) 6529846Sandreas.hansson@arm.com main.Append(LIBS=['c++']) 6538946Sandreas.hansson@arm.com 6543918Ssaidi@eecs.umich.eduelse: 6559068SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 6569068SAli.Saidi@ARM.com print "Don't know what compiler options to use for your compiler." 6579068SAli.Saidi@ARM.com print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 6589068SAli.Saidi@ARM.com print termcap.Yellow + ' version:' + termcap.Normal, 6599068SAli.Saidi@ARM.com if not CXX_version: 6609068SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 6619068SAli.Saidi@ARM.com termcap.Normal 6629068SAli.Saidi@ARM.com else: 6639068SAli.Saidi@ARM.com print CXX_version.replace('\n', '<nl>') 6649419Sandreas.hansson@arm.com print " If you're trying to use a compiler other than GCC" 6659068SAli.Saidi@ARM.com print " or clang, there appears to be something wrong with your" 6669068SAli.Saidi@ARM.com print " environment." 6679068SAli.Saidi@ARM.com print " " 6689068SAli.Saidi@ARM.com print " If you are trying to use a compiler other than those listed" 6699068SAli.Saidi@ARM.com print " above you will need to ease fix SConstruct and " 6709068SAli.Saidi@ARM.com print " src/SConscript to support that compiler." 6713918Ssaidi@eecs.umich.edu Exit(1) 6723918Ssaidi@eecs.umich.edu 6736157Snate@binkert.org# Set up common yacc/bison flags (needed for Ruby) 6746157Snate@binkert.orgmain['YACCFLAGS'] = '-d' 6756157Snate@binkert.orgmain['YACCHXXFILESUFFIX'] = '.hh' 6766157Snate@binkert.org 6775397Ssaidi@eecs.umich.edu# Do this after we save setting back, or else we'll tack on an 6785397Ssaidi@eecs.umich.edu# extra 'qdo' every time we run scons. 6796121Snate@binkert.orgif main['BATCH']: 6806121Snate@binkert.org main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 6816121Snate@binkert.org main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 6826121Snate@binkert.org main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 6836121Snate@binkert.org main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 6846121Snate@binkert.org main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 6855397Ssaidi@eecs.umich.edu 6861851SN/Aif sys.platform == 'cygwin': 6871851SN/A # cygwin has some header file issues... 6887739Sgblack@eecs.umich.edu main.Append(CCFLAGS=["-Wno-uninitialized"]) 689955SN/A 6909396Sandreas.hansson@arm.com# Check for the protobuf compiler 6919396Sandreas.hansson@arm.comprotoc_version = readCommand([main['PROTOC'], '--version'], 6929396Sandreas.hansson@arm.com exception='').split() 6939396Sandreas.hansson@arm.com 6949396Sandreas.hansson@arm.com# First two words should be "libprotoc x.y.z" 6959396Sandreas.hansson@arm.comif len(protoc_version) < 2 or protoc_version[0] != 'libprotoc': 6969396Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 6979396Sandreas.hansson@arm.com 'Warning: Protocol buffer compiler (protoc) not found.\n' + \ 6989396Sandreas.hansson@arm.com ' Please install protobuf-compiler for tracing support.' + \ 6999396Sandreas.hansson@arm.com termcap.Normal 7009396Sandreas.hansson@arm.com main['PROTOC'] = False 7019396Sandreas.hansson@arm.comelse: 7029396Sandreas.hansson@arm.com # Based on the availability of the compress stream wrappers, 7039396Sandreas.hansson@arm.com # require 2.1.0 7049396Sandreas.hansson@arm.com min_protoc_version = '2.1.0' 7059396Sandreas.hansson@arm.com if compareVersions(protoc_version[1], min_protoc_version) < 0: 7069477Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 7079477Sandreas.hansson@arm.com 'Warning: protoc version', min_protoc_version, \ 7089477Sandreas.hansson@arm.com 'or newer required.\n' + \ 7099477Sandreas.hansson@arm.com ' Installed version:', protoc_version[1], \ 7109477Sandreas.hansson@arm.com termcap.Normal 7119477Sandreas.hansson@arm.com main['PROTOC'] = False 7129477Sandreas.hansson@arm.com else: 7139477Sandreas.hansson@arm.com # Attempt to determine the appropriate include path and 7149477Sandreas.hansson@arm.com # library path using pkg-config, that means we also need to 7159477Sandreas.hansson@arm.com # check for pkg-config. Note that it is possible to use 7169477Sandreas.hansson@arm.com # protobuf without the involvement of pkg-config. Later on we 7179477Sandreas.hansson@arm.com # check go a library config check and at that point the test 7189477Sandreas.hansson@arm.com # will fail if libprotobuf cannot be found. 7199477Sandreas.hansson@arm.com if readCommand(['pkg-config', '--version'], exception=''): 7209477Sandreas.hansson@arm.com try: 7219477Sandreas.hansson@arm.com # Attempt to establish what linking flags to add for protobuf 7229477Sandreas.hansson@arm.com # using pkg-config 7239477Sandreas.hansson@arm.com main.ParseConfig('pkg-config --cflags --libs-only-L protobuf') 7249477Sandreas.hansson@arm.com except: 7259477Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 7269477Sandreas.hansson@arm.com 'Warning: pkg-config could not get protobuf flags.' + \ 7279477Sandreas.hansson@arm.com termcap.Normal 7289396Sandreas.hansson@arm.com 7293053Sstever@eecs.umich.edu# Check for SWIG 7306121Snate@binkert.orgif not main.has_key('SWIG'): 7313053Sstever@eecs.umich.edu print 'Error: SWIG utility not found.' 7323053Sstever@eecs.umich.edu print ' Please install (see http://www.swig.org) and retry.' 7333053Sstever@eecs.umich.edu Exit(1) 7343053Sstever@eecs.umich.edu 7353053Sstever@eecs.umich.edu# Check for appropriate SWIG version 7369072Sandreas.hansson@arm.comswig_version = readCommand([main['SWIG'], '-version'], exception='').split() 7373053Sstever@eecs.umich.edu# First 3 words should be "SWIG Version x.y.z" 7384742Sstever@eecs.umich.eduif len(swig_version) < 3 or \ 7394742Sstever@eecs.umich.edu swig_version[0] != 'SWIG' or swig_version[1] != 'Version': 7403053Sstever@eecs.umich.edu print 'Error determining SWIG version.' 7413053Sstever@eecs.umich.edu Exit(1) 7423053Sstever@eecs.umich.edu 74310181SCurtis.Dunham@arm.commin_swig_version = '2.0.4' 7446654Snate@binkert.orgif compareVersions(swig_version[2], min_swig_version) < 0: 7453053Sstever@eecs.umich.edu print 'Error: SWIG version', min_swig_version, 'or newer required.' 7463053Sstever@eecs.umich.edu print ' Installed version:', swig_version[2] 7473053Sstever@eecs.umich.edu Exit(1) 7483053Sstever@eecs.umich.edu 74910425Sandreas.hansson@arm.com# Check for known incompatibilities. The standard library shipped with 75010425Sandreas.hansson@arm.com# gcc >= 4.9 does not play well with swig versions prior to 3.0 75110425Sandreas.hansson@arm.comif main['GCC'] and compareVersions(gcc_version, '4.9') >= 0 and \ 75210425Sandreas.hansson@arm.com compareVersions(swig_version[2], '3.0') < 0: 75310425Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 75410425Sandreas.hansson@arm.com 'Warning: This combination of gcc and swig have' + \ 75510425Sandreas.hansson@arm.com ' known incompatibilities.\n' + \ 75610425Sandreas.hansson@arm.com ' If you encounter build problems, please update ' + \ 75710425Sandreas.hansson@arm.com 'swig to 3.0 or later.' + \ 75810425Sandreas.hansson@arm.com termcap.Normal 75910425Sandreas.hansson@arm.com 7602667Sstever@eecs.umich.edu# Set up SWIG flags & scanner 7614554Sbinkertn@umich.eduswig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS') 7626121Snate@binkert.orgmain.Append(SWIGFLAGS=swig_flags) 7632667Sstever@eecs.umich.edu 76410384SCurtis.Dunham@arm.com# Check for 'timeout' from GNU coreutils. If present, regressions 76510384SCurtis.Dunham@arm.com# will be run with a time limit. 76610384SCurtis.Dunham@arm.comTIMEOUT_version = readCommand(['timeout', '--version'], exception=False) 76710384SCurtis.Dunham@arm.commain['TIMEOUT'] = TIMEOUT_version and TIMEOUT_version.find('timeout') == 0 76810384SCurtis.Dunham@arm.com 7694554Sbinkertn@umich.edu# filter out all existing swig scanners, they mess up the dependency 7704554Sbinkertn@umich.edu# stuff for some reason 7714554Sbinkertn@umich.eduscanners = [] 7726121Snate@binkert.orgfor scanner in main['SCANNERS']: 7734554Sbinkertn@umich.edu skeys = scanner.skeys 7744554Sbinkertn@umich.edu if skeys == '.i': 7754554Sbinkertn@umich.edu continue 7764781Snate@binkert.org 7774554Sbinkertn@umich.edu if isinstance(skeys, (list, tuple)) and '.i' in skeys: 7784554Sbinkertn@umich.edu continue 7792667Sstever@eecs.umich.edu 7804554Sbinkertn@umich.edu scanners.append(scanner) 7814554Sbinkertn@umich.edu 7824554Sbinkertn@umich.edu# add the new swig scanner that we like better 7834554Sbinkertn@umich.edufrom SCons.Scanner import ClassicCPP as CPPScanner 7842667Sstever@eecs.umich.eduswig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")' 7854554Sbinkertn@umich.eduscanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re)) 7862667Sstever@eecs.umich.edu 7874554Sbinkertn@umich.edu# replace the scanners list that has what we want 7886121Snate@binkert.orgmain['SCANNERS'] = scanners 7892667Sstever@eecs.umich.edu 7905522Snate@binkert.org# Add a custom Check function to the Configure context so that we can 7915522Snate@binkert.org# figure out if the compiler adds leading underscores to global 7925522Snate@binkert.org# variables. This is needed for the autogenerated asm files that we 7935522Snate@binkert.org# use for embedding the python code. 7945522Snate@binkert.orgdef CheckLeading(context): 7955522Snate@binkert.org context.Message("Checking for leading underscore in global variables...") 7965522Snate@binkert.org # 1) Define a global variable called x from asm so the C compiler 7975522Snate@binkert.org # won't change the symbol at all. 7985522Snate@binkert.org # 2) Declare that variable. 7995522Snate@binkert.org # 3) Use the variable 8005522Snate@binkert.org # 8015522Snate@binkert.org # If the compiler prepends an underscore, this will successfully 8025522Snate@binkert.org # link because the external symbol 'x' will be called '_x' which 8035522Snate@binkert.org # was defined by the asm statement. If the compiler does not 8045522Snate@binkert.org # prepend an underscore, this will not successfully link because 8055522Snate@binkert.org # '_x' will have been defined by assembly, while the C portion of 8065522Snate@binkert.org # the code will be trying to use 'x' 8075522Snate@binkert.org ret = context.TryLink(''' 8085522Snate@binkert.org asm(".globl _x; _x: .byte 0"); 8095522Snate@binkert.org extern int x; 8105522Snate@binkert.org int main() { return x; } 8115522Snate@binkert.org ''', extension=".c") 8125522Snate@binkert.org context.env.Append(LEADING_UNDERSCORE=ret) 8135522Snate@binkert.org context.Result(ret) 8145522Snate@binkert.org return ret 8155522Snate@binkert.org 8169986Sandreas@sandberg.pp.se# Add a custom Check function to test for structure members. 8179986Sandreas@sandberg.pp.sedef CheckMember(context, include, decl, member, include_quotes="<>"): 8189986Sandreas@sandberg.pp.se context.Message("Checking for member %s in %s..." % 8199986Sandreas@sandberg.pp.se (member, decl)) 8209986Sandreas@sandberg.pp.se text = """ 8219986Sandreas@sandberg.pp.se#include %(header)s 8229986Sandreas@sandberg.pp.seint main(){ 8239986Sandreas@sandberg.pp.se %(decl)s test; 8249986Sandreas@sandberg.pp.se (void)test.%(member)s; 8259986Sandreas@sandberg.pp.se return 0; 8269986Sandreas@sandberg.pp.se}; 8279986Sandreas@sandberg.pp.se""" % { "header" : include_quotes[0] + include + include_quotes[1], 8289986Sandreas@sandberg.pp.se "decl" : decl, 8299986Sandreas@sandberg.pp.se "member" : member, 8309986Sandreas@sandberg.pp.se } 8319986Sandreas@sandberg.pp.se 8329986Sandreas@sandberg.pp.se ret = context.TryCompile(text, extension=".cc") 8339986Sandreas@sandberg.pp.se context.Result(ret) 8349986Sandreas@sandberg.pp.se return ret 8359986Sandreas@sandberg.pp.se 8362638Sstever@eecs.umich.edu# Platform-specific configuration. Note again that we assume that all 8372638Sstever@eecs.umich.edu# builds under a given build root run on the same host platform. 8386121Snate@binkert.orgconf = Configure(main, 8393716Sstever@eecs.umich.edu conf_dir = joinpath(build_root, '.scons_config'), 8405522Snate@binkert.org log_file = joinpath(build_root, 'scons_config.log'), 8419986Sandreas@sandberg.pp.se custom_tests = { 8429986Sandreas@sandberg.pp.se 'CheckLeading' : CheckLeading, 8439986Sandreas@sandberg.pp.se 'CheckMember' : CheckMember, 8449986Sandreas@sandberg.pp.se }) 8455522Snate@binkert.org 8465522Snate@binkert.org# Check for leading underscores. Don't really need to worry either 8475522Snate@binkert.org# way so don't need to check the return code. 8485522Snate@binkert.orgconf.CheckLeading() 8491858SN/A 8505227Ssaidi@eecs.umich.edu# Check if we should compile a 64 bit binary on Mac OS X/Darwin 8515227Ssaidi@eecs.umich.edutry: 8525227Ssaidi@eecs.umich.edu import platform 8535227Ssaidi@eecs.umich.edu uname = platform.uname() 8546654Snate@binkert.org if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0: 8556654Snate@binkert.org if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]): 8567769SAli.Saidi@ARM.com main.Append(CCFLAGS=['-arch', 'x86_64']) 8577769SAli.Saidi@ARM.com main.Append(CFLAGS=['-arch', 'x86_64']) 8587769SAli.Saidi@ARM.com main.Append(LINKFLAGS=['-arch', 'x86_64']) 8597769SAli.Saidi@ARM.com main.Append(ASFLAGS=['-arch', 'x86_64']) 8605227Ssaidi@eecs.umich.eduexcept: 8615227Ssaidi@eecs.umich.edu pass 8625227Ssaidi@eecs.umich.edu 8635204Sstever@gmail.com# Recent versions of scons substitute a "Null" object for Configure() 8645204Sstever@gmail.com# when configuration isn't necessary, e.g., if the "--help" option is 8655204Sstever@gmail.com# present. Unfortuantely this Null object always returns false, 8665204Sstever@gmail.com# breaking all our configuration checks. We replace it with our own 8675204Sstever@gmail.com# more optimistic null object that returns True instead. 8685204Sstever@gmail.comif not conf: 8695204Sstever@gmail.com def NullCheck(*args, **kwargs): 8705204Sstever@gmail.com return True 8715204Sstever@gmail.com 8725204Sstever@gmail.com class NullConf: 8735204Sstever@gmail.com def __init__(self, env): 8745204Sstever@gmail.com self.env = env 8755204Sstever@gmail.com def Finish(self): 8765204Sstever@gmail.com return self.env 8775204Sstever@gmail.com def __getattr__(self, mname): 8785204Sstever@gmail.com return NullCheck 8795204Sstever@gmail.com 8806121Snate@binkert.org conf = NullConf(main) 8815204Sstever@gmail.com 8827727SAli.Saidi@ARM.com# Cache build files in the supplied directory. 8837727SAli.Saidi@ARM.comif main['M5_BUILD_CACHE']: 8847727SAli.Saidi@ARM.com print 'Using build cache located at', main['M5_BUILD_CACHE'] 8857727SAli.Saidi@ARM.com CacheDir(main['M5_BUILD_CACHE']) 8867727SAli.Saidi@ARM.com 8879812Sandreas.hansson@arm.com# Find Python include and library directories for embedding the 8889812Sandreas.hansson@arm.com# interpreter. We rely on python-config to resolve the appropriate 8899812Sandreas.hansson@arm.com# includes and linker flags. ParseConfig does not seem to understand 8909812Sandreas.hansson@arm.com# the more exotic linker flags such as -Xlinker and -export-dynamic so 8919812Sandreas.hansson@arm.com# we add them explicitly below. If you want to link in an alternate 8929812Sandreas.hansson@arm.com# version of python, see above for instructions on how to invoke 8939812Sandreas.hansson@arm.com# scons with the appropriate PATH set. 89410158Sstian@dream-web.no# 89510158Sstian@dream-web.no# First we check if python2-config exists, else we use python-config 89610158Sstian@dream-web.nopython_config = readCommand(['which', 'python2-config'], exception='').strip() 89710158Sstian@dream-web.noif not os.path.exists(python_config): 89810160Sandreas.hansson@arm.com python_config = readCommand(['which', 'python-config'], 89910160Sandreas.hansson@arm.com exception='').strip() 90010158Sstian@dream-web.nopy_includes = readCommand([python_config, '--includes'], 9019812Sandreas.hansson@arm.com exception='').split() 9029812Sandreas.hansson@arm.com# Strip the -I from the include folders before adding them to the 9039812Sandreas.hansson@arm.com# CPPPATH 9049812Sandreas.hansson@arm.commain.Append(CPPPATH=map(lambda inc: inc[2:], py_includes)) 9059812Sandreas.hansson@arm.com 9069812Sandreas.hansson@arm.com# Read the linker flags and split them into libraries and other link 9079812Sandreas.hansson@arm.com# flags. The libraries are added later through the call the CheckLib. 90810158Sstian@dream-web.nopy_ld_flags = readCommand([python_config, '--ldflags'], exception='').split() 9099812Sandreas.hansson@arm.compy_libs = [] 9109812Sandreas.hansson@arm.comfor lib in py_ld_flags: 9119812Sandreas.hansson@arm.com if not lib.startswith('-l'): 9129812Sandreas.hansson@arm.com main.Append(LINKFLAGS=[lib]) 9139812Sandreas.hansson@arm.com else: 9149812Sandreas.hansson@arm.com lib = lib[2:] 9159812Sandreas.hansson@arm.com if lib not in py_libs: 9169812Sandreas.hansson@arm.com py_libs.append(lib) 9177727SAli.Saidi@ARM.com 9185863Snate@binkert.org# verify that this stuff works 9193118Sstever@eecs.umich.eduif not conf.CheckHeader('Python.h', '<>'): 9205863Snate@binkert.org print "Error: can't find Python.h header in", py_includes 9219239Sandreas.hansson@arm.com print "Install Python headers (package python-dev on Ubuntu and RedHat)" 9223118Sstever@eecs.umich.edu Exit(1) 9233118Sstever@eecs.umich.edu 9245863Snate@binkert.orgfor lib in py_libs: 9255863Snate@binkert.org if not conf.CheckLib(lib): 9265863Snate@binkert.org print "Error: can't find library %s required by python" % lib 9275863Snate@binkert.org Exit(1) 9283118Sstever@eecs.umich.edu 9293483Ssaidi@eecs.umich.edu# On Solaris you need to use libsocket for socket ops 9303494Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 9313494Ssaidi@eecs.umich.edu if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 9323483Ssaidi@eecs.umich.edu print "Can't find library with socket calls (e.g. accept())" 9333483Ssaidi@eecs.umich.edu Exit(1) 9343483Ssaidi@eecs.umich.edu 9353053Sstever@eecs.umich.edu# Check for zlib. If the check passes, libz will be automatically 9363053Sstever@eecs.umich.edu# added to the LIBS environment variable. 9373918Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 9383053Sstever@eecs.umich.edu print 'Error: did not find needed zlib compression library '\ 9393053Sstever@eecs.umich.edu 'and/or zlib.h header file.' 9403053Sstever@eecs.umich.edu print ' Please install zlib and try again.' 9413053Sstever@eecs.umich.edu Exit(1) 9423053Sstever@eecs.umich.edu 9439396Sandreas.hansson@arm.com# If we have the protobuf compiler, also make sure we have the 9449396Sandreas.hansson@arm.com# development libraries. If the check passes, libprotobuf will be 9459396Sandreas.hansson@arm.com# automatically added to the LIBS environment variable. After 9469396Sandreas.hansson@arm.com# this, we can use the HAVE_PROTOBUF flag to determine if we have 9479396Sandreas.hansson@arm.com# got both protoc and libprotobuf available. 9489396Sandreas.hansson@arm.commain['HAVE_PROTOBUF'] = main['PROTOC'] and \ 9499396Sandreas.hansson@arm.com conf.CheckLibWithHeader('protobuf', 'google/protobuf/message.h', 9509396Sandreas.hansson@arm.com 'C++', 'GOOGLE_PROTOBUF_VERIFY_VERSION;') 9519396Sandreas.hansson@arm.com 9529477Sandreas.hansson@arm.com# If we have the compiler but not the library, print another warning. 9539396Sandreas.hansson@arm.comif main['PROTOC'] and not main['HAVE_PROTOBUF']: 9549477Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 9559477Sandreas.hansson@arm.com 'Warning: did not find protocol buffer library and/or headers.\n' + \ 9569477Sandreas.hansson@arm.com ' Please install libprotobuf-dev for tracing support.' + \ 9579477Sandreas.hansson@arm.com termcap.Normal 9589396Sandreas.hansson@arm.com 9597840Snate@binkert.org# Check for librt. 9607865Sgblack@eecs.umich.eduhave_posix_clock = \ 9617865Sgblack@eecs.umich.edu conf.CheckLibWithHeader(None, 'time.h', 'C', 9627865Sgblack@eecs.umich.edu 'clock_nanosleep(0,0,NULL,NULL);') or \ 9637865Sgblack@eecs.umich.edu conf.CheckLibWithHeader('rt', 'time.h', 'C', 9647865Sgblack@eecs.umich.edu 'clock_nanosleep(0,0,NULL,NULL);') 9657840Snate@binkert.org 9669900Sandreas@sandberg.pp.sehave_posix_timers = \ 9679900Sandreas@sandberg.pp.se conf.CheckLibWithHeader([None, 'rt'], [ 'time.h', 'signal.h' ], 'C', 9689900Sandreas@sandberg.pp.se 'timer_create(CLOCK_MONOTONIC, NULL, NULL);') 9699900Sandreas@sandberg.pp.se 9709591Sandreas@sandberg.pp.seif conf.CheckLib('tcmalloc'): 9719591Sandreas@sandberg.pp.se main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 9729591Sandreas@sandberg.pp.seelif conf.CheckLib('tcmalloc_minimal'): 9739590Sandreas@sandberg.pp.se main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 9749590Sandreas@sandberg.pp.seelse: 9759045SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + \ 9769045SAli.Saidi@ARM.com "You can get a 12% performance improvement by installing tcmalloc "\ 9779071Sandreas.hansson@arm.com "(libgoogle-perftools-dev package on Ubuntu or RedHat)." + \ 9789071Sandreas.hansson@arm.com termcap.Normal 9799045SAli.Saidi@ARM.com 9807840Snate@binkert.orgif not have_posix_clock: 9817840Snate@binkert.org print "Can't find library for POSIX clocks." 9827840Snate@binkert.org 9831858SN/A# Check for <fenv.h> (C99 FP environment control) 9841858SN/Ahave_fenv = conf.CheckHeader('fenv.h', '<>') 9851858SN/Aif not have_fenv: 9861858SN/A print "Warning: Header file <fenv.h> not found." 9871858SN/A print " This host has no IEEE FP rounding mode control." 9881858SN/A 9899903Sandreas.hansson@arm.com# Check if we should enable KVM-based hardware virtualization. The API 9909903Sandreas.hansson@arm.com# we rely on exists since version 2.6.36 of the kernel, but somehow 9919903Sandreas.hansson@arm.com# the KVM_API_VERSION does not reflect the change. We test for one of 9929903Sandreas.hansson@arm.com# the types as a fall back. 9939903Sandreas.hansson@arm.comhave_kvm = conf.CheckHeader('linux/kvm.h', '<>') and \ 9949903Sandreas.hansson@arm.com conf.CheckTypeSize('struct kvm_xsave', '#include <linux/kvm.h>') != 0 9959651SAndreas.Sandberg@ARM.comif not have_kvm: 9969903Sandreas.hansson@arm.com print "Info: Compatible header file <linux/kvm.h> not found, " \ 9979651SAndreas.Sandberg@ARM.com "disabling KVM support." 9989651SAndreas.Sandberg@ARM.com 9999651SAndreas.Sandberg@ARM.com# Check if the requested target ISA is compatible with the host 10009651SAndreas.Sandberg@ARM.comdef is_isa_kvm_compatible(isa): 10019651SAndreas.Sandberg@ARM.com isa_comp_table = { 10029657Sandreas.sandberg@arm.com "arm" : ( "armv7l" ), 10039883Sandreas@sandberg.pp.se "x86" : ( "x86_64" ), 10049651SAndreas.Sandberg@ARM.com } 10059651SAndreas.Sandberg@ARM.com try: 10069651SAndreas.Sandberg@ARM.com import platform 10079651SAndreas.Sandberg@ARM.com host_isa = platform.machine() 10089651SAndreas.Sandberg@ARM.com except: 10099651SAndreas.Sandberg@ARM.com print "Warning: Failed to determine host ISA." 10109651SAndreas.Sandberg@ARM.com return False 10119651SAndreas.Sandberg@ARM.com 10129651SAndreas.Sandberg@ARM.com return host_isa in isa_comp_table.get(isa, []) 10139651SAndreas.Sandberg@ARM.com 10149651SAndreas.Sandberg@ARM.com 10159986Sandreas@sandberg.pp.se# Check if the exclude_host attribute is available. We want this to 10169986Sandreas@sandberg.pp.se# get accurate instruction counts in KVM. 10179986Sandreas@sandberg.pp.semain['HAVE_PERF_ATTR_EXCLUDE_HOST'] = conf.CheckMember( 10189986Sandreas@sandberg.pp.se 'linux/perf_event.h', 'struct perf_event_attr', 'exclude_host') 10199986Sandreas@sandberg.pp.se 10209986Sandreas@sandberg.pp.se 10215863Snate@binkert.org###################################################################### 10225863Snate@binkert.org# 10235863Snate@binkert.org# Finish the configuration 10245863Snate@binkert.org# 10256121Snate@binkert.orgmain = conf.Finish() 10261858SN/A 10275863Snate@binkert.org###################################################################### 10285863Snate@binkert.org# 10295863Snate@binkert.org# Collect all non-global variables 10305863Snate@binkert.org# 10315863Snate@binkert.org 10322139SN/A# Define the universe of supported ISAs 10334202Sbinkertn@umich.eduall_isa_list = [ ] 10344202Sbinkertn@umich.eduExport('all_isa_list') 10352139SN/A 10366994Snate@binkert.orgclass CpuModel(object): 10376994Snate@binkert.org '''The CpuModel class encapsulates everything the ISA parser needs to 10386994Snate@binkert.org know about a particular CPU model.''' 10396994Snate@binkert.org 10406994Snate@binkert.org # Dict of available CPU model objects. Accessible as CpuModel.dict. 10416994Snate@binkert.org dict = {} 10426994Snate@binkert.org 10436994Snate@binkert.org # Constructor. Automatically adds models to CpuModel.dict. 104410319SAndreas.Sandberg@ARM.com def __init__(self, name, default=False): 10456994Snate@binkert.org self.name = name # name of model 10466994Snate@binkert.org 10476994Snate@binkert.org # This cpu is enabled by default 10486994Snate@binkert.org self.default = default 10496994Snate@binkert.org 10506994Snate@binkert.org # Add self to dict 10516994Snate@binkert.org if name in CpuModel.dict: 10526994Snate@binkert.org raise AttributeError, "CpuModel '%s' already registered" % name 10536994Snate@binkert.org CpuModel.dict[name] = self 10546994Snate@binkert.org 10556994Snate@binkert.orgExport('CpuModel') 10562155SN/A 10575863Snate@binkert.org# Sticky variables get saved in the variables file so they persist from 10581869SN/A# one invocation to the next (unless overridden, in which case the new 10591869SN/A# value becomes sticky). 10605863Snate@binkert.orgsticky_vars = Variables(args=ARGUMENTS) 10615863Snate@binkert.orgExport('sticky_vars') 10624202Sbinkertn@umich.edu 10636108Snate@binkert.org# Sticky variables that should be exported 10646108Snate@binkert.orgexport_vars = [] 10656108Snate@binkert.orgExport('export_vars') 10666108Snate@binkert.org 10679219Spower.jg@gmail.com# For Ruby 10689219Spower.jg@gmail.comall_protocols = [] 10699219Spower.jg@gmail.comExport('all_protocols') 10709219Spower.jg@gmail.comprotocol_dirs = [] 10719219Spower.jg@gmail.comExport('protocol_dirs') 10729219Spower.jg@gmail.comslicc_includes = [] 10739219Spower.jg@gmail.comExport('slicc_includes') 10749219Spower.jg@gmail.com 10754202Sbinkertn@umich.edu# Walk the tree and execute all SConsopts scripts that wil add to the 10765863Snate@binkert.org# above variables 107710135SCurtis.Dunham@arm.comif GetOption('verbose'): 10788474Sgblack@eecs.umich.edu print "Reading SConsopts" 10795742Snate@binkert.orgfor bdir in [ base_dir ] + extras_dir_list: 10808268Ssteve.reinhardt@amd.com if not isdir(bdir): 10818268Ssteve.reinhardt@amd.com print "Error: directory '%s' does not exist" % bdir 10828268Ssteve.reinhardt@amd.com Exit(1) 10835742Snate@binkert.org for root, dirs, files in os.walk(bdir): 10845341Sstever@gmail.com if 'SConsopts' in files: 10858474Sgblack@eecs.umich.edu if GetOption('verbose'): 10868474Sgblack@eecs.umich.edu print "Reading", joinpath(root, 'SConsopts') 10875342Sstever@gmail.com SConscript(joinpath(root, 'SConsopts')) 10884202Sbinkertn@umich.edu 10894202Sbinkertn@umich.eduall_isa_list.sort() 10904202Sbinkertn@umich.edu 10915863Snate@binkert.orgsticky_vars.AddVariables( 10925863Snate@binkert.org EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 10936994Snate@binkert.org ListVariable('CPU_MODELS', 'CPU models', 10946994Snate@binkert.org sorted(n for n,m in CpuModel.dict.iteritems() if m.default), 109510319SAndreas.Sandberg@ARM.com sorted(CpuModel.dict.keys())), 10965863Snate@binkert.org BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 10975863Snate@binkert.org False), 10985863Snate@binkert.org BoolVariable('SS_COMPATIBLE_FP', 10995863Snate@binkert.org 'Make floating-point results compatible with SimpleScalar', 11005863Snate@binkert.org False), 11015863Snate@binkert.org BoolVariable('USE_SSE2', 11025863Snate@binkert.org 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 11035863Snate@binkert.org False), 11047840Snate@binkert.org BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), 11055863Snate@binkert.org BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 11065952Ssaidi@eecs.umich.edu BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False), 11079651SAndreas.Sandberg@ARM.com BoolVariable('USE_KVM', 'Enable hardware virtualized (KVM) CPU models', have_kvm), 11089219Spower.jg@gmail.com EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None', 11099219Spower.jg@gmail.com all_protocols), 11101869SN/A ) 11111858SN/A 11125863Snate@binkert.org# These variables get exported to #defines in config/*.hh (see src/SConscript). 11139420Sandreas.hansson@arm.comexport_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 'TARGET_ISA', 'CP_ANNOTATE', 11149986Sandreas@sandberg.pp.se 'USE_POSIX_CLOCK', 'PROTOCOL', 'HAVE_PROTOBUF', 11159986Sandreas@sandberg.pp.se 'HAVE_PERF_ATTR_EXCLUDE_HOST'] 11161858SN/A 1117955SN/A################################################### 1118955SN/A# 11191869SN/A# Define a SCons builder for configuration flag headers. 11201869SN/A# 11211869SN/A################################################### 11221869SN/A 11231869SN/A# This function generates a config header file that #defines the 11245863Snate@binkert.org# variable symbol to the current variable setting (0 or 1). The source 11255863Snate@binkert.org# operands are the name of the variable and a Value node containing the 11265863Snate@binkert.org# value of the variable. 11271869SN/Adef build_config_file(target, source, env): 11285863Snate@binkert.org (variable, value) = [s.get_contents() for s in source] 11291869SN/A f = file(str(target[0]), 'w') 11305863Snate@binkert.org print >> f, '#define', variable, value 11311869SN/A f.close() 11321869SN/A return None 11331869SN/A 11341869SN/A# Combine the two functions into a scons Action object. 11358483Sgblack@eecs.umich.educonfig_action = MakeAction(build_config_file, Transform("CONFIG H", 2)) 11361869SN/A 11371869SN/A# The emitter munges the source & target node lists to reflect what 11381869SN/A# we're really doing. 11391869SN/Adef config_emitter(target, source, env): 11405863Snate@binkert.org # extract variable name from Builder arg 11415863Snate@binkert.org variable = str(target[0]) 11421869SN/A # True target is config header file 11435863Snate@binkert.org target = joinpath('config', variable.lower() + '.hh') 11445863Snate@binkert.org val = env[variable] 11453356Sbinkertn@umich.edu if isinstance(val, bool): 11463356Sbinkertn@umich.edu # Force value to 0/1 11473356Sbinkertn@umich.edu val = int(val) 11483356Sbinkertn@umich.edu elif isinstance(val, str): 11493356Sbinkertn@umich.edu val = '"' + val + '"' 11504781Snate@binkert.org 11515863Snate@binkert.org # Sources are variable name & value (packaged in SCons Value nodes) 11525863Snate@binkert.org return ([target], [Value(variable), Value(val)]) 11531869SN/A 11541869SN/Aconfig_builder = Builder(emitter = config_emitter, action = config_action) 11551869SN/A 11566121Snate@binkert.orgmain.Append(BUILDERS = { 'ConfigFile' : config_builder }) 11571869SN/A 11582638Sstever@eecs.umich.edu# libelf build is shared across all configs in the build root. 11596121Snate@binkert.orgmain.SConscript('ext/libelf/SConscript', 11606121Snate@binkert.org variant_dir = joinpath(build_root, 'libelf')) 11612638Sstever@eecs.umich.edu 11625749Scws3k@cs.virginia.edu# gzstream build is shared across all configs in the build root. 11636121Snate@binkert.orgmain.SConscript('ext/gzstream/SConscript', 11646121Snate@binkert.org variant_dir = joinpath(build_root, 'gzstream')) 11655749Scws3k@cs.virginia.edu 11669537Satgutier@umich.edu# libfdt build is shared across all configs in the build root. 11679537Satgutier@umich.edumain.SConscript('ext/libfdt/SConscript', 11689537Satgutier@umich.edu variant_dir = joinpath(build_root, 'libfdt')) 11699537Satgutier@umich.edu 11709888Sandreas@sandberg.pp.se# fputils build is shared across all configs in the build root. 11719888Sandreas@sandberg.pp.semain.SConscript('ext/fputils/SConscript', 11729888Sandreas@sandberg.pp.se variant_dir = joinpath(build_root, 'fputils')) 11739888Sandreas@sandberg.pp.se 117410066Sandreas.hansson@arm.com# DRAMSim2 build is shared across all configs in the build root. 117510066Sandreas.hansson@arm.commain.SConscript('ext/dramsim2/SConscript', 117610066Sandreas.hansson@arm.com variant_dir = joinpath(build_root, 'dramsim2')) 117710066Sandreas.hansson@arm.com 117810428Sandreas.hansson@arm.com# DRAMPower build is shared across all configs in the build root. 117910428Sandreas.hansson@arm.commain.SConscript('ext/drampower/SConscript', 118010428Sandreas.hansson@arm.com variant_dir = joinpath(build_root, 'drampower')) 118110428Sandreas.hansson@arm.com 11821869SN/A################################################### 11831869SN/A# 11843546Sgblack@eecs.umich.edu# This function is used to set up a directory with switching headers 11853546Sgblack@eecs.umich.edu# 11863546Sgblack@eecs.umich.edu################################################### 11873546Sgblack@eecs.umich.edu 11886121Snate@binkert.orgmain['ALL_ISA_LIST'] = all_isa_list 118910196SCurtis.Dunham@arm.comall_isa_deps = {} 11905863Snate@binkert.orgdef make_switching_dir(dname, switch_headers, env): 11913546Sgblack@eecs.umich.edu # Generate the header. target[0] is the full path of the output 11923546Sgblack@eecs.umich.edu # header to generate. 'source' is a dummy variable, since we get the 11933546Sgblack@eecs.umich.edu # list of ISAs from env['ALL_ISA_LIST']. 11943546Sgblack@eecs.umich.edu def gen_switch_hdr(target, source, env): 11954781Snate@binkert.org fname = str(target[0]) 11966658Snate@binkert.org isa = env['TARGET_ISA'].lower() 119710196SCurtis.Dunham@arm.com try: 119810196SCurtis.Dunham@arm.com f = open(fname, 'w') 119910196SCurtis.Dunham@arm.com print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname)) 120010196SCurtis.Dunham@arm.com f.close() 120110196SCurtis.Dunham@arm.com except IOError: 120210196SCurtis.Dunham@arm.com print "Failed to create %s" % fname 120310196SCurtis.Dunham@arm.com raise 12043546Sgblack@eecs.umich.edu 12053546Sgblack@eecs.umich.edu # Build SCons Action object. 'varlist' specifies env vars that this 12063546Sgblack@eecs.umich.edu # action depends on; when env['ALL_ISA_LIST'] changes these actions 12073546Sgblack@eecs.umich.edu # should get re-executed. 12087756SAli.Saidi@ARM.com switch_hdr_action = MakeAction(gen_switch_hdr, 12097816Ssteve.reinhardt@amd.com Transform("GENERATE"), varlist=['ALL_ISA_LIST']) 12103546Sgblack@eecs.umich.edu 12113546Sgblack@eecs.umich.edu # Instantiate actions for each header 12123546Sgblack@eecs.umich.edu for hdr in switch_headers: 12133546Sgblack@eecs.umich.edu env.Command(hdr, [], switch_hdr_action) 121410196SCurtis.Dunham@arm.com 121510196SCurtis.Dunham@arm.com isa_target = Dir('.').up().name.lower().replace('_', '-') 121610196SCurtis.Dunham@arm.com env['PHONY_BASE'] = '#'+isa_target 121710196SCurtis.Dunham@arm.com all_isa_deps[isa_target] = None 121810196SCurtis.Dunham@arm.com 12194202Sbinkertn@umich.eduExport('make_switching_dir') 12203546Sgblack@eecs.umich.edu 122110196SCurtis.Dunham@arm.com# all-isas -> all-deps -> all-environs -> all_targets 122210196SCurtis.Dunham@arm.commain.Alias('#all-isas', []) 122310196SCurtis.Dunham@arm.commain.Alias('#all-deps', '#all-isas') 122410196SCurtis.Dunham@arm.com 122510196SCurtis.Dunham@arm.com# Dummy target to ensure all environments are created before telling 122610196SCurtis.Dunham@arm.com# SCons what to actually make (the command line arguments). We attach 122710196SCurtis.Dunham@arm.com# them to the dependence graph after the environments are complete. 122810196SCurtis.Dunham@arm.comORIG_BUILD_TARGETS = list(BUILD_TARGETS) # force a copy; gets closure to work. 122910196SCurtis.Dunham@arm.comdef environsComplete(target, source, env): 123010196SCurtis.Dunham@arm.com for t in ORIG_BUILD_TARGETS: 123110196SCurtis.Dunham@arm.com main.Depends('#all-targets', t) 123210196SCurtis.Dunham@arm.com 123310196SCurtis.Dunham@arm.com# Each build/* switching_dir attaches its *-environs target to #all-environs. 123410196SCurtis.Dunham@arm.commain.Append(BUILDERS = {'CompleteEnvirons' : 123510196SCurtis.Dunham@arm.com Builder(action=MakeAction(environsComplete, None))}) 123610196SCurtis.Dunham@arm.commain.CompleteEnvirons('#all-environs', []) 123710196SCurtis.Dunham@arm.com 123810196SCurtis.Dunham@arm.comdef doNothing(**ignored): pass 123910196SCurtis.Dunham@arm.commain.Append(BUILDERS = {'Dummy': Builder(action=MakeAction(doNothing, None))}) 124010196SCurtis.Dunham@arm.com 124110196SCurtis.Dunham@arm.com# The final target to which all the original targets ultimately get attached. 124210196SCurtis.Dunham@arm.commain.Dummy('#all-targets', '#all-environs') 124310196SCurtis.Dunham@arm.comBUILD_TARGETS[:] = ['#all-targets'] 124410196SCurtis.Dunham@arm.com 12453546Sgblack@eecs.umich.edu################################################### 12463546Sgblack@eecs.umich.edu# 1247955SN/A# Define build environments for selected configurations. 1248955SN/A# 1249955SN/A################################################### 1250955SN/A 12515863Snate@binkert.orgfor variant_path in variant_paths: 125210135SCurtis.Dunham@arm.com if not GetOption('silent'): 125310135SCurtis.Dunham@arm.com print "Building in", variant_path 12545343Sstever@gmail.com 12555343Sstever@gmail.com # Make a copy of the build-root environment to use for this config. 12566121Snate@binkert.org env = main.Clone() 12575863Snate@binkert.org env['BUILDDIR'] = variant_path 12584773Snate@binkert.org 12595863Snate@binkert.org # variant_dir is the tail component of build path, and is used to 12602632Sstever@eecs.umich.edu # determine the build parameters (e.g., 'ALPHA_SE') 12615863Snate@binkert.org (build_root, variant_dir) = splitpath(variant_path) 12622023SN/A 12635863Snate@binkert.org # Set env variables according to the build directory config. 12645863Snate@binkert.org sticky_vars.files = [] 12655863Snate@binkert.org # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 12665863Snate@binkert.org # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 12675863Snate@binkert.org # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 12685863Snate@binkert.org current_vars_file = joinpath(build_root, 'variables', variant_dir) 12695863Snate@binkert.org if isfile(current_vars_file): 12705863Snate@binkert.org sticky_vars.files.append(current_vars_file) 127110135SCurtis.Dunham@arm.com if not GetOption('silent'): 127210135SCurtis.Dunham@arm.com print "Using saved variables file %s" % current_vars_file 12732632Sstever@eecs.umich.edu else: 12745863Snate@binkert.org # Build dir-specific variables file doesn't exist. 12752023SN/A 12762632Sstever@eecs.umich.edu # Make sure the directory is there so we can create it later 12775863Snate@binkert.org opt_dir = dirname(current_vars_file) 12785342Sstever@gmail.com if not isdir(opt_dir): 12795863Snate@binkert.org mkdir(opt_dir) 12802632Sstever@eecs.umich.edu 12815863Snate@binkert.org # Get default build variables from source tree. Variables are 12825863Snate@binkert.org # normally determined by name of $VARIANT_DIR, but can be 12838267Ssteve.reinhardt@amd.com # overridden by '--default=' arg on command line. 12848120Sgblack@eecs.umich.edu default = GetOption('default') 12858267Ssteve.reinhardt@amd.com opts_dir = joinpath(main.root.abspath, 'build_opts') 12868267Ssteve.reinhardt@amd.com if default: 12878267Ssteve.reinhardt@amd.com default_vars_files = [joinpath(build_root, 'variables', default), 12888267Ssteve.reinhardt@amd.com joinpath(opts_dir, default)] 12898267Ssteve.reinhardt@amd.com else: 12908267Ssteve.reinhardt@amd.com default_vars_files = [joinpath(opts_dir, variant_dir)] 12918267Ssteve.reinhardt@amd.com existing_files = filter(isfile, default_vars_files) 12928267Ssteve.reinhardt@amd.com if existing_files: 12938267Ssteve.reinhardt@amd.com default_vars_file = existing_files[0] 12945863Snate@binkert.org sticky_vars.files.append(default_vars_file) 12955863Snate@binkert.org print "Variables file %s not found,\n using defaults in %s" \ 12965863Snate@binkert.org % (current_vars_file, default_vars_file) 12972632Sstever@eecs.umich.edu else: 12988267Ssteve.reinhardt@amd.com print "Error: cannot find variables file %s or " \ 12998267Ssteve.reinhardt@amd.com "default file(s) %s" \ 13008267Ssteve.reinhardt@amd.com % (current_vars_file, ' or '.join(default_vars_files)) 13012632Sstever@eecs.umich.edu Exit(1) 13021888SN/A 13035863Snate@binkert.org # Apply current variable settings to env 13045863Snate@binkert.org sticky_vars.Update(env) 13051858SN/A 13068120Sgblack@eecs.umich.edu help_texts["local_vars"] += \ 13078120Sgblack@eecs.umich.edu "Build variables for %s:\n" % variant_dir \ 13087756SAli.Saidi@ARM.com + sticky_vars.GenerateHelpText(env) 13092598SN/A 13105863Snate@binkert.org # Process variable settings. 13111858SN/A 13121858SN/A if not have_fenv and env['USE_FENV']: 13131858SN/A print "Warning: <fenv.h> not available; " \ 13145863Snate@binkert.org "forcing USE_FENV to False in", variant_dir + "." 13151858SN/A env['USE_FENV'] = False 13161858SN/A 13171858SN/A if not env['USE_FENV']: 13185863Snate@binkert.org print "Warning: No IEEE FP rounding mode control in", variant_dir + "." 13191871SN/A print " FP results may deviate slightly from other platforms." 13201858SN/A 13211858SN/A if env['EFENCE']: 13221858SN/A env.Append(LIBS=['efence']) 13231858SN/A 13249651SAndreas.Sandberg@ARM.com if env['USE_KVM']: 13259651SAndreas.Sandberg@ARM.com if not have_kvm: 13269651SAndreas.Sandberg@ARM.com print "Warning: Can not enable KVM, host seems to lack KVM support" 13279651SAndreas.Sandberg@ARM.com env['USE_KVM'] = False 13289900Sandreas@sandberg.pp.se elif not have_posix_timers: 13299900Sandreas@sandberg.pp.se print "Warning: Can not enable KVM, host seems to lack support " \ 13309900Sandreas@sandberg.pp.se "for POSIX timers" 13319900Sandreas@sandberg.pp.se env['USE_KVM'] = False 13329651SAndreas.Sandberg@ARM.com elif not is_isa_kvm_compatible(env['TARGET_ISA']): 13339651SAndreas.Sandberg@ARM.com print "Info: KVM support disabled due to unsupported host and " \ 13349651SAndreas.Sandberg@ARM.com "target ISA combination" 13359651SAndreas.Sandberg@ARM.com env['USE_KVM'] = False 13369651SAndreas.Sandberg@ARM.com 13379986Sandreas@sandberg.pp.se # Warn about missing optional functionality 13389986Sandreas@sandberg.pp.se if env['USE_KVM']: 13399986Sandreas@sandberg.pp.se if not main['HAVE_PERF_ATTR_EXCLUDE_HOST']: 13409986Sandreas@sandberg.pp.se print "Warning: perf_event headers lack support for the " \ 13419986Sandreas@sandberg.pp.se "exclude_host attribute. KVM instruction counts will " \ 13429986Sandreas@sandberg.pp.se "be inaccurate." 13439986Sandreas@sandberg.pp.se 13445863Snate@binkert.org # Save sticky variable settings back to current variables file 13455863Snate@binkert.org sticky_vars.Save(current_vars_file, env) 13461869SN/A 13471965SN/A if env['USE_SSE2']: 13487739Sgblack@eecs.umich.edu env.Append(CCFLAGS=['-msse2']) 13491965SN/A 13502761Sstever@eecs.umich.edu # The src/SConscript file sets up the build rules in 'env' according 13515863Snate@binkert.org # to the configured variables. It returns a list of environments, 13521869SN/A # one for each variant build (debug, opt, etc.) 135310196SCurtis.Dunham@arm.com SConscript('src/SConscript', variant_dir = variant_path, exports = 'env') 13541869SN/A 135510196SCurtis.Dunham@arm.comdef pairwise(iterable): 135610196SCurtis.Dunham@arm.com "s -> (s0,s1), (s1,s2), (s2, s3), ..." 135710196SCurtis.Dunham@arm.com a, b = itertools.tee(iterable) 135810196SCurtis.Dunham@arm.com b.next() 135910196SCurtis.Dunham@arm.com return itertools.izip(a, b) 136010196SCurtis.Dunham@arm.com 136110196SCurtis.Dunham@arm.com# Create false dependencies so SCons will parse ISAs, establish 136210196SCurtis.Dunham@arm.com# dependencies, and setup the build Environments serially. Either 136310196SCurtis.Dunham@arm.com# SCons (likely) and/or our SConscripts (possibly) cannot cope with -j 136410196SCurtis.Dunham@arm.com# greater than 1. It appears to be standard race condition stuff; it 136510196SCurtis.Dunham@arm.com# doesn't always fail, but usually, and the behaviors are different. 136610196SCurtis.Dunham@arm.com# Every time I tried to remove this, builds would fail in some 136710196SCurtis.Dunham@arm.com# creative new way. So, don't do that. You'll want to, though, because 136810196SCurtis.Dunham@arm.com# tests/SConscript takes a long time to make its Environments. 136910196SCurtis.Dunham@arm.comfor t1, t2 in pairwise(sorted(all_isa_deps.iterkeys())): 137010196SCurtis.Dunham@arm.com main.Depends('#%s-deps' % t2, '#%s-deps' % t1) 137110196SCurtis.Dunham@arm.com main.Depends('#%s-environs' % t2, '#%s-environs' % t1) 1372955SN/A 13738120Sgblack@eecs.umich.edu# base help text 13748120Sgblack@eecs.umich.eduHelp(''' 13758120Sgblack@eecs.umich.eduUsage: scons [scons options] [build variables] [target(s)] 13768120Sgblack@eecs.umich.edu 13778120Sgblack@eecs.umich.eduExtra scons options: 13788120Sgblack@eecs.umich.edu%(options)s 13798120Sgblack@eecs.umich.edu 13808120Sgblack@eecs.umich.eduGlobal build variables: 13818120Sgblack@eecs.umich.edu%(global_vars)s 13828120Sgblack@eecs.umich.edu 13838120Sgblack@eecs.umich.edu%(local_vars)s 13848120Sgblack@eecs.umich.edu''' % help_texts) 1385