SConstruct revision 11811
1955SN/A# -*- mode:python -*- 2955SN/A 312230Sgiacomo.travaglini@arm.com# Copyright (c) 2013, 2015, 2016 ARM Limited 49812Sandreas.hansson@arm.com# All rights reserved. 59812Sandreas.hansson@arm.com# 69812Sandreas.hansson@arm.com# The license below extends only to copyright in the software and shall 79812Sandreas.hansson@arm.com# not be construed as granting a license to any other intellectual 89812Sandreas.hansson@arm.com# property including but not limited to intellectual property relating 99812Sandreas.hansson@arm.com# to a hardware implementation of the functionality of the software 109812Sandreas.hansson@arm.com# licensed hereunder. You may use the software subject to the license 119812Sandreas.hansson@arm.com# terms below provided that you ensure that this notice is replicated 129812Sandreas.hansson@arm.com# unmodified and in its entirety in all distributions of the software, 139812Sandreas.hansson@arm.com# modified or unmodified, in source code or in binary form. 149812Sandreas.hansson@arm.com# 157816Ssteve.reinhardt@amd.com# Copyright (c) 2011 Advanced Micro Devices, Inc. 165871Snate@binkert.org# Copyright (c) 2009 The Hewlett-Packard Development Company 171762SN/A# Copyright (c) 2004-2005 The Regents of The University of Michigan 18955SN/A# All rights reserved. 19955SN/A# 20955SN/A# Redistribution and use in source and binary forms, with or without 21955SN/A# modification, are permitted provided that the following conditions are 22955SN/A# met: redistributions of source code must retain the above copyright 23955SN/A# notice, this list of conditions and the following disclaimer; 24955SN/A# redistributions in binary form must reproduce the above copyright 25955SN/A# notice, this list of conditions and the following disclaimer in the 26955SN/A# documentation and/or other materials provided with the distribution; 27955SN/A# neither the name of the copyright holders nor the names of its 28955SN/A# contributors may be used to endorse or promote products derived from 29955SN/A# this software without specific prior written permission. 30955SN/A# 31955SN/A# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32955SN/A# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33955SN/A# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 34955SN/A# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35955SN/A# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 36955SN/A# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 37955SN/A# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 38955SN/A# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 39955SN/A# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 40955SN/A# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 41955SN/A# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 422665Ssaidi@eecs.umich.edu# 432665Ssaidi@eecs.umich.edu# Authors: Steve Reinhardt 445863Snate@binkert.org# Nathan Binkert 45955SN/A 46955SN/A################################################### 47955SN/A# 48955SN/A# SCons top-level build description (SConstruct) file. 49955SN/A# 508878Ssteve.reinhardt@amd.com# While in this directory ('gem5'), just type 'scons' to build the default 512632Sstever@eecs.umich.edu# configuration (see below), or type 'scons build/<CONFIG>/<binary>' 528878Ssteve.reinhardt@amd.com# to build some other configuration (e.g., 'build/ALPHA/gem5.opt' for 532632Sstever@eecs.umich.edu# the optimized full-system version). 54955SN/A# 558878Ssteve.reinhardt@amd.com# You can build gem5 in a different directory as long as there is a 562632Sstever@eecs.umich.edu# 'build/<CONFIG>' somewhere along the target path. The build system 572761Sstever@eecs.umich.edu# expects that all configs under the same build directory are being 582632Sstever@eecs.umich.edu# built for the same host system. 592632Sstever@eecs.umich.edu# 602632Sstever@eecs.umich.edu# Examples: 612761Sstever@eecs.umich.edu# 622761Sstever@eecs.umich.edu# The following two commands are equivalent. The '-u' option tells 632761Sstever@eecs.umich.edu# scons to search up the directory tree for this SConstruct file. 648878Ssteve.reinhardt@amd.com# % cd <path-to-src>/gem5 ; scons build/ALPHA/gem5.debug 658878Ssteve.reinhardt@amd.com# % cd <path-to-src>/gem5/build/ALPHA; scons -u gem5.debug 662761Sstever@eecs.umich.edu# 672761Sstever@eecs.umich.edu# The following two commands are equivalent and demonstrate building 682761Sstever@eecs.umich.edu# in a directory outside of the source tree. The '-C' option tells 692761Sstever@eecs.umich.edu# scons to chdir to the specified directory to find this SConstruct 702761Sstever@eecs.umich.edu# file. 718878Ssteve.reinhardt@amd.com# % cd <path-to-src>/gem5 ; scons /local/foo/build/ALPHA/gem5.debug 728878Ssteve.reinhardt@amd.com# % cd /local/foo/build/ALPHA; scons -C <path-to-src>/gem5 gem5.debug 732632Sstever@eecs.umich.edu# 742632Sstever@eecs.umich.edu# You can use 'scons -H' to print scons options. If you're in this 758878Ssteve.reinhardt@amd.com# 'gem5' directory (or use -u or -C to tell scons where to find this 768878Ssteve.reinhardt@amd.com# file), you can use 'scons -h' to print all the gem5-specific build 772632Sstever@eecs.umich.edu# options as well. 78955SN/A# 79955SN/A################################################### 80955SN/A 816654Snate@binkert.org# Check for recent-enough Python and SCons versions. 8210196SCurtis.Dunham@arm.comtry: 83955SN/A # Really old versions of scons only take two options for the 845396Ssaidi@eecs.umich.edu # function, so check once without the revision and once with the 8511401Sandreas.sandberg@arm.com # 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) 884202Sbinkertn@umich.edu EnsureSConsVersion(0, 98, 1) 895863Snate@binkert.orgexcept SystemExit, e: 905863Snate@binkert.org print """ 915863Snate@binkert.orgFor more details, see: 925863Snate@binkert.org http://gem5.org/Dependencies 93955SN/A""" 946654Snate@binkert.org raise 955273Sstever@gmail.com 965871Snate@binkert.org# We ensure the python version early because because python-config 975273Sstever@gmail.com# requires python 2.5 986654Snate@binkert.orgtry: 995396Ssaidi@eecs.umich.edu EnsurePythonVersion(2, 5) 1008120Sgblack@eecs.umich.eduexcept SystemExit, e: 1018120Sgblack@eecs.umich.edu print """ 1028120Sgblack@eecs.umich.eduYou can use a non-default installation of the Python interpreter by 1038120Sgblack@eecs.umich.edurearranging your PATH so that scons finds the non-default 'python' and 1048120Sgblack@eecs.umich.edu'python-config' first. 1058120Sgblack@eecs.umich.edu 1068120Sgblack@eecs.umich.eduFor more details, see: 1078120Sgblack@eecs.umich.edu http://gem5.org/wiki/index.php/Using_a_non-default_Python_installation 1088879Ssteve.reinhardt@amd.com""" 1098879Ssteve.reinhardt@amd.com raise 1108879Ssteve.reinhardt@amd.com 1118879Ssteve.reinhardt@amd.com# Global Python includes 1128879Ssteve.reinhardt@amd.comimport itertools 1138879Ssteve.reinhardt@amd.comimport os 1148879Ssteve.reinhardt@amd.comimport re 1158879Ssteve.reinhardt@amd.comimport shutil 1168879Ssteve.reinhardt@amd.comimport subprocess 1178879Ssteve.reinhardt@amd.comimport sys 1188879Ssteve.reinhardt@amd.com 1198879Ssteve.reinhardt@amd.comfrom os import mkdir, environ 1208879Ssteve.reinhardt@amd.comfrom os.path import abspath, basename, dirname, expanduser, normpath 1218120Sgblack@eecs.umich.edufrom os.path import exists, isdir, isfile 1228120Sgblack@eecs.umich.edufrom os.path import join as joinpath, split as splitpath 1238120Sgblack@eecs.umich.edu 1248120Sgblack@eecs.umich.edu# SCons includes 1258120Sgblack@eecs.umich.eduimport SCons 1268120Sgblack@eecs.umich.eduimport SCons.Node 1278120Sgblack@eecs.umich.edu 1288120Sgblack@eecs.umich.eduextra_python_paths = [ 1298120Sgblack@eecs.umich.edu Dir('src/python').srcnode().abspath, # gem5 includes 1308120Sgblack@eecs.umich.edu Dir('ext/ply').srcnode().abspath, # ply is used by several files 1318120Sgblack@eecs.umich.edu ] 1328120Sgblack@eecs.umich.edu 1338120Sgblack@eecs.umich.edusys.path[1:1] = extra_python_paths 1348120Sgblack@eecs.umich.edu 1358879Ssteve.reinhardt@amd.comfrom m5.util import compareVersions, readCommand 1368879Ssteve.reinhardt@amd.comfrom m5.util.terminal import get_termcap 1378879Ssteve.reinhardt@amd.com 1388879Ssteve.reinhardt@amd.comhelp_texts = { 13910458Sandreas.hansson@arm.com "options" : "", 14010458Sandreas.hansson@arm.com "global_vars" : "", 14110458Sandreas.hansson@arm.com "local_vars" : "" 1428879Ssteve.reinhardt@amd.com} 1438879Ssteve.reinhardt@amd.com 1448879Ssteve.reinhardt@amd.comExport("help_texts") 1458879Ssteve.reinhardt@amd.com 1469227Sandreas.hansson@arm.com 1479227Sandreas.hansson@arm.com# There's a bug in scons in that (1) by default, the help texts from 14812063Sgabeblack@google.com# AddOption() are supposed to be displayed when you type 'scons -h' 14912063Sgabeblack@google.com# and (2) you can override the help displayed by 'scons -h' using the 15012063Sgabeblack@google.com# Help() function, but these two features are incompatible: once 1518879Ssteve.reinhardt@amd.com# you've overridden the help text using Help(), there's no way to get 1528879Ssteve.reinhardt@amd.com# at the help texts from AddOptions. See: 1538879Ssteve.reinhardt@amd.com# http://scons.tigris.org/issues/show_bug.cgi?id=2356 1548879Ssteve.reinhardt@amd.com# http://scons.tigris.org/issues/show_bug.cgi?id=2611 15510453SAndrew.Bardsley@arm.com# This hack lets us extract the help text from AddOptions and 15610453SAndrew.Bardsley@arm.com# re-inject it via Help(). Ideally someday this bug will be fixed and 15710453SAndrew.Bardsley@arm.com# we can just use AddOption directly. 15810456SCurtis.Dunham@arm.comdef AddLocalOption(*args, **kwargs): 15910456SCurtis.Dunham@arm.com col_width = 30 16010456SCurtis.Dunham@arm.com 16110457Sandreas.hansson@arm.com help = " " + ", ".join(args) 16210457Sandreas.hansson@arm.com if "help" in kwargs: 16311342Sandreas.hansson@arm.com length = len(help) 16411342Sandreas.hansson@arm.com if length >= col_width: 1658120Sgblack@eecs.umich.edu help += "\n" + " " * col_width 16612063Sgabeblack@google.com else: 16712063Sgabeblack@google.com help += " " * (col_width - length) 16812063Sgabeblack@google.com help += kwargs["help"] 16912063Sgabeblack@google.com help_texts["options"] += help + "\n" 1705871Snate@binkert.org 1715871Snate@binkert.org AddOption(*args, **kwargs) 1726121Snate@binkert.org 1735871Snate@binkert.orgAddLocalOption('--colors', dest='use_colors', action='store_true', 1745871Snate@binkert.org help="Add color to abbreviated scons output") 1759926Sstan.czerniawski@arm.comAddLocalOption('--no-colors', dest='use_colors', action='store_false', 17612243Sgabeblack@google.com help="Don't add color to abbreviated scons output") 1771533SN/AAddLocalOption('--with-cxx-config', dest='with_cxx_config', 17812246Sgabeblack@google.com action='store_true', 17912246Sgabeblack@google.com help="Build with support for C++-based configuration") 18012246Sgabeblack@google.comAddLocalOption('--default', dest='default', type='string', action='store', 18112246Sgabeblack@google.com help='Override which build_opts file to use for defaults') 1829239Sandreas.hansson@arm.comAddLocalOption('--ignore-style', dest='ignore_style', action='store_true', 1839239Sandreas.hansson@arm.com help='Disable style checking hooks') 1849239Sandreas.hansson@arm.comAddLocalOption('--no-lto', dest='no_lto', action='store_true', 1859239Sandreas.hansson@arm.com help='Disable Link-Time Optimization for fast') 1869239Sandreas.hansson@arm.comAddLocalOption('--update-ref', dest='update_ref', action='store_true', 1879239Sandreas.hansson@arm.com help='Update test reference outputs') 1889239Sandreas.hansson@arm.comAddLocalOption('--verbose', dest='verbose', action='store_true', 189955SN/A help='Print full tool command lines') 190955SN/AAddLocalOption('--without-python', dest='without_python', 1912632Sstever@eecs.umich.edu action='store_true', 1922632Sstever@eecs.umich.edu help='Build without Python configuration support') 193955SN/AAddLocalOption('--without-tcmalloc', dest='without_tcmalloc', 194955SN/A action='store_true', 195955SN/A help='Disable linking against tcmalloc') 196955SN/AAddLocalOption('--with-ubsan', dest='with_ubsan', action='store_true', 1978878Ssteve.reinhardt@amd.com help='Build with Undefined Behavior Sanitizer if available') 198955SN/AAddLocalOption('--with-asan', dest='with_asan', action='store_true', 1992632Sstever@eecs.umich.edu help='Build with Address Sanitizer if available') 2002632Sstever@eecs.umich.edu 2012632Sstever@eecs.umich.edutermcap = get_termcap(GetOption('use_colors')) 2022632Sstever@eecs.umich.edu 2032632Sstever@eecs.umich.edu######################################################################## 2042632Sstever@eecs.umich.edu# 2052632Sstever@eecs.umich.edu# Set up the main build environment. 2068268Ssteve.reinhardt@amd.com# 2078268Ssteve.reinhardt@amd.com######################################################################## 2088268Ssteve.reinhardt@amd.com 2098268Ssteve.reinhardt@amd.com# export TERM so that clang reports errors in color 2108268Ssteve.reinhardt@amd.comuse_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 2118268Ssteve.reinhardt@amd.com 'LIBRARY_PATH', 'PATH', 'PKG_CONFIG_PATH', 'PROTOC', 2128268Ssteve.reinhardt@amd.com 'PYTHONPATH', 'RANLIB', 'SWIG', 'TERM' ]) 2132632Sstever@eecs.umich.edu 2142632Sstever@eecs.umich.eduuse_prefixes = [ 2152632Sstever@eecs.umich.edu "ASAN_", # address sanitizer symbolizer path and settings 2162632Sstever@eecs.umich.edu "CCACHE_", # ccache (caching compiler wrapper) configuration 2178268Ssteve.reinhardt@amd.com "CCC_", # clang static analyzer configuration 2182632Sstever@eecs.umich.edu "DISTCC_", # distcc (distributed compiler wrapper) configuration 2198268Ssteve.reinhardt@amd.com "INCLUDE_SERVER_", # distcc pump server settings 2208268Ssteve.reinhardt@amd.com "M5", # M5 configuration (e.g., path to kernels) 2218268Ssteve.reinhardt@amd.com ] 2228268Ssteve.reinhardt@amd.com 2233718Sstever@eecs.umich.eduuse_env = {} 2242634Sstever@eecs.umich.edufor key,val in sorted(os.environ.iteritems()): 2252634Sstever@eecs.umich.edu if key in use_vars or \ 2265863Snate@binkert.org any([key.startswith(prefix) for prefix in use_prefixes]): 2272638Sstever@eecs.umich.edu use_env[key] = val 2288268Ssteve.reinhardt@amd.com 2292632Sstever@eecs.umich.edu# Tell scons to avoid implicit command dependencies to avoid issues 2302632Sstever@eecs.umich.edu# with the param wrappes being compiled twice (see 2312632Sstever@eecs.umich.edu# http://scons.tigris.org/issues/show_bug.cgi?id=2811) 2322632Sstever@eecs.umich.edumain = Environment(ENV=use_env, IMPLICIT_COMMAND_DEPENDENCIES=0) 2332632Sstever@eecs.umich.edumain.Decider('MD5-timestamp') 2341858SN/Amain.root = Dir(".") # The current directory (where this file lives). 2353716Sstever@eecs.umich.edumain.srcdir = Dir("src") # The source directory 2362638Sstever@eecs.umich.edu 2372638Sstever@eecs.umich.edumain_dict_keys = main.Dictionary().keys() 2382638Sstever@eecs.umich.edu 2392638Sstever@eecs.umich.edu# Check that we have a C/C++ compiler 2402638Sstever@eecs.umich.eduif not ('CC' in main_dict_keys and 'CXX' in main_dict_keys): 2412638Sstever@eecs.umich.edu print "No C++ compiler installed (package g++ on Ubuntu and RedHat)" 2422638Sstever@eecs.umich.edu Exit(1) 2435863Snate@binkert.org 2445863Snate@binkert.org# Check that swig is present 2455863Snate@binkert.orgif not 'SWIG' in main_dict_keys: 246955SN/A print "swig is not installed (package swig on Ubuntu and RedHat)" 2475341Sstever@gmail.com Exit(1) 2485341Sstever@gmail.com 2495863Snate@binkert.org# add useful python code PYTHONPATH so it can be used by subprocesses 2507756SAli.Saidi@ARM.com# as well 2515341Sstever@gmail.commain.AppendENVPath('PYTHONPATH', extra_python_paths) 2526121Snate@binkert.org 2534494Ssaidi@eecs.umich.edu######################################################################## 2546121Snate@binkert.org# 2551105SN/A# Mercurial Stuff. 2562667Sstever@eecs.umich.edu# 2572667Sstever@eecs.umich.edu# If the gem5 directory is a mercurial repository, we should do some 2582667Sstever@eecs.umich.edu# extra things. 2592667Sstever@eecs.umich.edu# 2606121Snate@binkert.org######################################################################## 2612667Sstever@eecs.umich.edu 2625341Sstever@gmail.comhgdir = main.root.Dir(".hg") 2635863Snate@binkert.org 2645341Sstever@gmail.com 2655341Sstever@gmail.comstyle_message = """ 2665341Sstever@gmail.comYou're missing the gem5 style hook, which automatically checks your code 2678120Sgblack@eecs.umich.eduagainst the gem5 style rules on %s. 2685341Sstever@gmail.comThis script will now install the hook in your %s. 2698120Sgblack@eecs.umich.eduPress enter to continue, or ctrl-c to abort: """ 2705341Sstever@gmail.com 2718120Sgblack@eecs.umich.edumercurial_style_message = style_message % ("hg commit and qrefresh commands", 2726121Snate@binkert.org ".hg/hgrc file") 2736121Snate@binkert.orggit_style_message = style_message % ("'git commit'", 2749396Sandreas.hansson@arm.com ".git/hooks/ directory") 2755397Ssaidi@eecs.umich.edu 2765397Ssaidi@eecs.umich.edumercurial_style_upgrade_message = """ 2777727SAli.Saidi@ARM.comYour Mercurial style hooks are not up-to-date. This script will now 2788268Ssteve.reinhardt@amd.comtry to automatically update them. A backup of your hgrc will be saved 2796168Snate@binkert.orgin .hg/hgrc.old. 2805341Sstever@gmail.comPress enter to continue, or ctrl-c to abort: """ 2818120Sgblack@eecs.umich.edu 2828120Sgblack@eecs.umich.edumercurial_style_hook = """ 2838120Sgblack@eecs.umich.edu# The following lines were automatically added by gem5/SConstruct 2846814Sgblack@eecs.umich.edu# to provide the gem5 style-checking hooks 2855863Snate@binkert.org[extensions] 2868120Sgblack@eecs.umich.eduhgstyle = %s/util/hgstyle.py 2875341Sstever@gmail.com 2885863Snate@binkert.org[hooks] 2898268Ssteve.reinhardt@amd.compretxncommit.style = python:hgstyle.check_style 2906121Snate@binkert.orgpre-qrefresh.style = python:hgstyle.check_style 2916121Snate@binkert.org# End of SConstruct additions 2928268Ssteve.reinhardt@amd.com 2935742Snate@binkert.org""" % (main.root.abspath) 2945742Snate@binkert.org 2955341Sstever@gmail.commercurial_lib_not_found = """ 2965742Snate@binkert.orgMercurial libraries cannot be found, ignoring style hook. If 2975742Snate@binkert.orgyou are a gem5 developer, please fix this and run the style 2985341Sstever@gmail.comhook. It is important. 2996017Snate@binkert.org""" 3006121Snate@binkert.org 3016017Snate@binkert.org# Check for style hook and prompt for installation if it's not there. 30212158Sandreas.sandberg@arm.com# Skip this if --ignore-style was specified, there's no interactive 30312158Sandreas.sandberg@arm.com# terminal to prompt, or no recognized revision control system can be 30412158Sandreas.sandberg@arm.com# found. 3058120Sgblack@eecs.umich.eduignore_style = GetOption('ignore_style') or not sys.stdin.isatty() 3067756SAli.Saidi@ARM.com 3077756SAli.Saidi@ARM.com# Try wire up Mercurial to the style hooks 3087756SAli.Saidi@ARM.comif not ignore_style and hgdir.exists(): 3097756SAli.Saidi@ARM.com style_hook = True 3107816Ssteve.reinhardt@amd.com style_hooks = tuple() 3117816Ssteve.reinhardt@amd.com hgrc = hgdir.File('hgrc') 3127816Ssteve.reinhardt@amd.com hgrc_old = hgdir.File('hgrc.old') 3137816Ssteve.reinhardt@amd.com try: 3147816Ssteve.reinhardt@amd.com from mercurial import ui 31511979Sgabeblack@google.com ui = ui.ui() 3167816Ssteve.reinhardt@amd.com ui.readconfig(hgrc.abspath) 3177816Ssteve.reinhardt@amd.com style_hooks = (ui.config('hooks', 'pretxncommit.style', None), 3187816Ssteve.reinhardt@amd.com ui.config('hooks', 'pre-qrefresh.style', None)) 3197816Ssteve.reinhardt@amd.com style_hook = all(style_hooks) 3207756SAli.Saidi@ARM.com style_extension = ui.config('extensions', 'style', None) 3217756SAli.Saidi@ARM.com except ImportError: 3229227Sandreas.hansson@arm.com print mercurial_lib_not_found 3239227Sandreas.hansson@arm.com 3249227Sandreas.hansson@arm.com if "python:style.check_style" in style_hooks: 3259227Sandreas.hansson@arm.com # Try to upgrade the style hooks 3269590Sandreas@sandberg.pp.se print mercurial_style_upgrade_message 3279590Sandreas@sandberg.pp.se # continue unless user does ctrl-c/ctrl-d etc. 3289590Sandreas@sandberg.pp.se try: 3299590Sandreas@sandberg.pp.se raw_input() 3309590Sandreas@sandberg.pp.se except: 3319590Sandreas@sandberg.pp.se print "Input exception, exiting scons.\n" 3326654Snate@binkert.org sys.exit(1) 3336654Snate@binkert.org shutil.copyfile(hgrc.abspath, hgrc_old.abspath) 3345871Snate@binkert.org re_style_hook = re.compile(r"^([^=#]+)\.style\s*=\s*([^#\s]+).*") 3356121Snate@binkert.org re_style_extension = re.compile("style\s*=\s*([^#\s]+).*") 3368946Sandreas.hansson@arm.com old, new = open(hgrc_old.abspath, 'r'), open(hgrc.abspath, 'w') 3379419Sandreas.hansson@arm.com for l in old: 3383940Ssaidi@eecs.umich.edu m_hook = re_style_hook.match(l) 3393918Ssaidi@eecs.umich.edu m_ext = re_style_extension.match(l) 3403918Ssaidi@eecs.umich.edu if m_hook: 3411858SN/A hook, check = m_hook.groups() 3429556Sandreas.hansson@arm.com if check != "python:style.check_style": 3439556Sandreas.hansson@arm.com print "Warning: %s.style is using a non-default " \ 3449556Sandreas.hansson@arm.com "checker: %s" % (hook, check) 3459556Sandreas.hansson@arm.com if hook not in ("pretxncommit", "pre-qrefresh"): 34611294Sandreas.hansson@arm.com print "Warning: Updating unknown style hook: %s" % hook 34711294Sandreas.hansson@arm.com 34811294Sandreas.hansson@arm.com l = "%s.style = python:hgstyle.check_style\n" % hook 34911294Sandreas.hansson@arm.com elif m_ext and m_ext.group(1) == style_extension: 35010878Sandreas.hansson@arm.com l = "hgstyle = %s/util/hgstyle.py\n" % main.root.abspath 35110878Sandreas.hansson@arm.com 35211811Sbaz21@cam.ac.uk new.write(l) 35311811Sbaz21@cam.ac.uk elif not style_hook: 35411811Sbaz21@cam.ac.uk print mercurial_style_message, 35511982Sgabeblack@google.com # continue unless user does ctrl-c/ctrl-d etc. 35611982Sgabeblack@google.com try: 35711982Sgabeblack@google.com raw_input() 35811982Sgabeblack@google.com except: 35911992Sgabeblack@google.com print "Input exception, exiting scons.\n" 36011982Sgabeblack@google.com sys.exit(1) 36111982Sgabeblack@google.com hgrc_path = '%s/.hg/hgrc' % main.root.abspath 3629556Sandreas.hansson@arm.com print "Adding style hook to", hgrc_path, "\n" 3639556Sandreas.hansson@arm.com try: 3649556Sandreas.hansson@arm.com with open(hgrc_path, 'a') as f: 3659556Sandreas.hansson@arm.com f.write(mercurial_style_hook) 3669556Sandreas.hansson@arm.com except: 3679556Sandreas.hansson@arm.com print "Error updating", hgrc_path 3689556Sandreas.hansson@arm.com sys.exit(1) 3699556Sandreas.hansson@arm.com 3709556Sandreas.hansson@arm.comdef install_git_style_hooks(): 3719556Sandreas.hansson@arm.com try: 3729556Sandreas.hansson@arm.com gitdir = Dir(readCommand( 3739556Sandreas.hansson@arm.com ["git", "rev-parse", "--git-dir"]).strip("\n")) 3749556Sandreas.hansson@arm.com except Exception, e: 3759556Sandreas.hansson@arm.com print "Warning: Failed to find git repo directory: %s" % e 3769556Sandreas.hansson@arm.com return 3779556Sandreas.hansson@arm.com 3789556Sandreas.hansson@arm.com git_hooks = gitdir.Dir("hooks") 3799556Sandreas.hansson@arm.com git_pre_commit_hook = git_hooks.File("pre-commit") 3809556Sandreas.hansson@arm.com git_style_script = File("util/git-pre-commit.py") 3816121Snate@binkert.org 38211500Sandreas.hansson@arm.com if git_pre_commit_hook.exists(): 38310238Sandreas.hansson@arm.com return 38410878Sandreas.hansson@arm.com 3859420Sandreas.hansson@arm.com print git_style_message, 38611500Sandreas.hansson@arm.com try: 38711500Sandreas.hansson@arm.com raw_input() 3889420Sandreas.hansson@arm.com except: 3899420Sandreas.hansson@arm.com print "Input exception, exiting scons.\n" 3909420Sandreas.hansson@arm.com sys.exit(1) 3919420Sandreas.hansson@arm.com 3929420Sandreas.hansson@arm.com if not git_hooks.exists(): 39312063Sgabeblack@google.com mkdir(git_hooks.get_abspath()) 39412063Sgabeblack@google.com 39512063Sgabeblack@google.com # Use a relative symlink if the hooks live in the source directory 39612063Sgabeblack@google.com if git_pre_commit_hook.is_under(main.root): 39712063Sgabeblack@google.com script_path = os.path.relpath( 39812063Sgabeblack@google.com git_style_script.get_abspath(), 39912063Sgabeblack@google.com git_pre_commit_hook.Dir(".").get_abspath()) 40012063Sgabeblack@google.com else: 40112063Sgabeblack@google.com script_path = git_style_script.get_abspath() 40212063Sgabeblack@google.com 40312063Sgabeblack@google.com try: 40412063Sgabeblack@google.com os.symlink(script_path, git_pre_commit_hook.get_abspath()) 40512063Sgabeblack@google.com except: 40612063Sgabeblack@google.com print "Error updating git pre-commit hook" 40712063Sgabeblack@google.com raise 40812063Sgabeblack@google.com 40912063Sgabeblack@google.com# Try to wire up git to the style hooks 41012063Sgabeblack@google.comif not ignore_style and main.root.Entry(".git").exists(): 41112063Sgabeblack@google.com install_git_style_hooks() 41212063Sgabeblack@google.com 41312063Sgabeblack@google.com################################################### 41412063Sgabeblack@google.com# 41510264Sandreas.hansson@arm.com# Figure out which configurations to set up based on the path(s) of 41610264Sandreas.hansson@arm.com# the target(s). 41710264Sandreas.hansson@arm.com# 41810264Sandreas.hansson@arm.com################################################### 41911925Sgabeblack@google.com 42011925Sgabeblack@google.com# Find default configuration & binary. 42111500Sandreas.hansson@arm.comDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA/gem5.debug')) 42210264Sandreas.hansson@arm.com 42311500Sandreas.hansson@arm.com# helper function: find last occurrence of element in list 42411500Sandreas.hansson@arm.comdef rfind(l, elt, offs = -1): 42511500Sandreas.hansson@arm.com for i in range(len(l)+offs, 0, -1): 42611500Sandreas.hansson@arm.com if l[i] == elt: 42710866Sandreas.hansson@arm.com return i 42811500Sandreas.hansson@arm.com raise ValueError, "element not found" 42911500Sandreas.hansson@arm.com 43011500Sandreas.hansson@arm.com# Take a list of paths (or SCons Nodes) and return a list with all 43111500Sandreas.hansson@arm.com# paths made absolute and ~-expanded. Paths will be interpreted 43211500Sandreas.hansson@arm.com# relative to the launch directory unless a different root is provided 43311500Sandreas.hansson@arm.comdef makePathListAbsolute(path_list, root=GetLaunchDir()): 43411500Sandreas.hansson@arm.com return [abspath(joinpath(root, expanduser(str(p)))) 43510264Sandreas.hansson@arm.com for p in path_list] 43610457Sandreas.hansson@arm.com 43710457Sandreas.hansson@arm.com# Each target must have 'build' in the interior of the path; the 43810457Sandreas.hansson@arm.com# directory below this will determine the build parameters. For 43910457Sandreas.hansson@arm.com# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 44010457Sandreas.hansson@arm.com# recognize that ALPHA_SE specifies the configuration because it 44110457Sandreas.hansson@arm.com# follow 'build' in the build path. 44210457Sandreas.hansson@arm.com 44310457Sandreas.hansson@arm.com# The funky assignment to "[:]" is needed to replace the list contents 44410457Sandreas.hansson@arm.com# in place rather than reassign the symbol to a new list, which 44512063Sgabeblack@google.com# doesn't work (obviously!). 44612063Sgabeblack@google.comBUILD_TARGETS[:] = makePathListAbsolute(BUILD_TARGETS) 44712063Sgabeblack@google.com 44812063Sgabeblack@google.com# Generate a list of the unique build roots and configs that the 44912063Sgabeblack@google.com# collected targets reference. 45012063Sgabeblack@google.comvariant_paths = [] 45112063Sgabeblack@google.combuild_root = None 45212063Sgabeblack@google.comfor t in BUILD_TARGETS: 45312063Sgabeblack@google.com path_dirs = t.split('/') 45412063Sgabeblack@google.com try: 45512063Sgabeblack@google.com build_top = rfind(path_dirs, 'build', -2) 45610238Sandreas.hansson@arm.com except: 45710238Sandreas.hansson@arm.com print "Error: no non-leaf 'build' dir found on target path", t 45810238Sandreas.hansson@arm.com Exit(1) 45912063Sgabeblack@google.com this_build_root = joinpath('/',*path_dirs[:build_top+1]) 46010238Sandreas.hansson@arm.com if not build_root: 46110238Sandreas.hansson@arm.com build_root = this_build_root 46210416Sandreas.hansson@arm.com else: 46310238Sandreas.hansson@arm.com if this_build_root != build_root: 4649227Sandreas.hansson@arm.com print "Error: build targets not under same build root\n"\ 46510238Sandreas.hansson@arm.com " %s\n %s" % (build_root, this_build_root) 46610416Sandreas.hansson@arm.com Exit(1) 46710416Sandreas.hansson@arm.com variant_path = joinpath('/',*path_dirs[:build_top+2]) 4689227Sandreas.hansson@arm.com if variant_path not in variant_paths: 4699590Sandreas@sandberg.pp.se variant_paths.append(variant_path) 4709590Sandreas@sandberg.pp.se 4719590Sandreas@sandberg.pp.se# Make sure build_root exists (might not if this is the first build there) 47211497SMatteo.Andreozzi@arm.comif not isdir(build_root): 47311497SMatteo.Andreozzi@arm.com mkdir(build_root) 47411497SMatteo.Andreozzi@arm.commain['BUILDROOT'] = build_root 47511497SMatteo.Andreozzi@arm.com 47612304Sgabeblack@google.comExport('main') 47712304Sgabeblack@google.com 47812304Sgabeblack@google.commain.SConsignFile(joinpath(build_root, "sconsign")) 47912304Sgabeblack@google.com 48012304Sgabeblack@google.com# Default duplicate option is to use hard links, but this messes up 48112304Sgabeblack@google.com# when you use emacs to edit a file in the target dir, as emacs moves 48212304Sgabeblack@google.com# file to file~ then copies to file, breaking the link. Symbolic 48312304Sgabeblack@google.com# (soft) links work better. 48412304Sgabeblack@google.commain.SetOption('duplicate', 'soft-copy') 48512304Sgabeblack@google.com 48612304Sgabeblack@google.com# 48712304Sgabeblack@google.com# Set up global sticky variables... these are common to an entire build 48812304Sgabeblack@google.com# tree (not specific to a particular build like ALPHA_SE) 48912304Sgabeblack@google.com# 49012304Sgabeblack@google.com 49112304Sgabeblack@google.comglobal_vars_file = joinpath(build_root, 'variables.global') 49212304Sgabeblack@google.com 49312304Sgabeblack@google.comglobal_vars = Variables(global_vars_file, args=ARGUMENTS) 49412304Sgabeblack@google.com 4958737Skoansin.tan@gmail.comglobal_vars.AddVariables( 49610878Sandreas.hansson@arm.com ('CC', 'C compiler', environ.get('CC', main['CC'])), 49711500Sandreas.hansson@arm.com ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 4989420Sandreas.hansson@arm.com ('SWIG', 'SWIG tool', environ.get('SWIG', main['SWIG'])), 4998737Skoansin.tan@gmail.com ('PROTOC', 'protoc tool', environ.get('PROTOC', 'protoc')), 50010106SMitch.Hayenga@arm.com ('BATCH', 'Use batch pool for build and tests', False), 5018737Skoansin.tan@gmail.com ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 5028737Skoansin.tan@gmail.com ('M5_BUILD_CACHE', 'Cache built objects in this directory', False), 50310878Sandreas.hansson@arm.com ('EXTRAS', 'Add extra directories to the compilation', '') 50410878Sandreas.hansson@arm.com ) 5058737Skoansin.tan@gmail.com 5068737Skoansin.tan@gmail.com# Update main environment with values from ARGUMENTS & global_vars_file 5078737Skoansin.tan@gmail.comglobal_vars.Update(main) 5088737Skoansin.tan@gmail.comhelp_texts["global_vars"] += global_vars.GenerateHelpText(main) 5098737Skoansin.tan@gmail.com 5108737Skoansin.tan@gmail.com# Save sticky variable settings back to current variables file 51111294Sandreas.hansson@arm.comglobal_vars.Save(global_vars_file, main) 5129556Sandreas.hansson@arm.com 5139556Sandreas.hansson@arm.com# Parse EXTRAS variable to build list of all directories where we're 5149556Sandreas.hansson@arm.com# look for sources etc. This list is exported as extras_dir_list. 51511294Sandreas.hansson@arm.combase_dir = main.srcdir.abspath 51610278SAndreas.Sandberg@ARM.comif main['EXTRAS']: 51710278SAndreas.Sandberg@ARM.com extras_dir_list = makePathListAbsolute(main['EXTRAS'].split(':')) 51810278SAndreas.Sandberg@ARM.comelse: 51910278SAndreas.Sandberg@ARM.com extras_dir_list = [] 52010278SAndreas.Sandberg@ARM.com 52110278SAndreas.Sandberg@ARM.comExport('base_dir') 5229556Sandreas.hansson@arm.comExport('extras_dir_list') 5239590Sandreas@sandberg.pp.se 5249590Sandreas@sandberg.pp.se# the ext directory should be on the #includes path 5259420Sandreas.hansson@arm.commain.Append(CPPPATH=[Dir('ext')]) 5269846Sandreas.hansson@arm.com 5279846Sandreas.hansson@arm.comdef strip_build_path(path, env): 5289846Sandreas.hansson@arm.com path = str(path) 5299846Sandreas.hansson@arm.com variant_base = env['BUILDROOT'] + os.path.sep 5308946Sandreas.hansson@arm.com if path.startswith(variant_base): 53111811Sbaz21@cam.ac.uk path = path[len(variant_base):] 53211811Sbaz21@cam.ac.uk elif path.startswith('build/'): 53311811Sbaz21@cam.ac.uk path = path[6:] 53411811Sbaz21@cam.ac.uk return path 53512304Sgabeblack@google.com 53612304Sgabeblack@google.com# Generate a string of the form: 53712304Sgabeblack@google.com# common/path/prefix/src1, src2 -> tgt1, tgt2 53812304Sgabeblack@google.com# to print while building. 53912304Sgabeblack@google.comclass Transform(object): 54012304Sgabeblack@google.com # all specific color settings should be here and nowhere else 54112304Sgabeblack@google.com tool_color = termcap.Normal 54212304Sgabeblack@google.com pfx_color = termcap.Yellow 54312304Sgabeblack@google.com srcs_color = termcap.Yellow + termcap.Bold 54412304Sgabeblack@google.com arrow_color = termcap.Blue + termcap.Bold 54512304Sgabeblack@google.com tgts_color = termcap.Yellow + termcap.Bold 54612304Sgabeblack@google.com 54712304Sgabeblack@google.com def __init__(self, tool, max_sources=99): 54812304Sgabeblack@google.com self.format = self.tool_color + (" [%8s] " % tool) \ 54912304Sgabeblack@google.com + self.pfx_color + "%s" \ 55012304Sgabeblack@google.com + self.srcs_color + "%s" \ 5513918Ssaidi@eecs.umich.edu + self.arrow_color + " -> " \ 5529068SAli.Saidi@ARM.com + self.tgts_color + "%s" \ 5539068SAli.Saidi@ARM.com + termcap.Normal 5549068SAli.Saidi@ARM.com self.max_sources = max_sources 5559068SAli.Saidi@ARM.com 5569068SAli.Saidi@ARM.com def __call__(self, target, source, env, for_signature=None): 5579068SAli.Saidi@ARM.com # truncate source list according to max_sources param 5589068SAli.Saidi@ARM.com source = source[0:self.max_sources] 5599068SAli.Saidi@ARM.com def strip(f): 5609068SAli.Saidi@ARM.com return strip_build_path(str(f), env) 5619419Sandreas.hansson@arm.com if len(source) > 0: 5629068SAli.Saidi@ARM.com srcs = map(strip, source) 5639068SAli.Saidi@ARM.com else: 5649068SAli.Saidi@ARM.com srcs = [''] 5659068SAli.Saidi@ARM.com tgts = map(strip, target) 5669068SAli.Saidi@ARM.com # surprisingly, os.path.commonprefix is a dumb char-by-char string 5679068SAli.Saidi@ARM.com # operation that has nothing to do with paths. 5683918Ssaidi@eecs.umich.edu com_pfx = os.path.commonprefix(srcs + tgts) 5693918Ssaidi@eecs.umich.edu com_pfx_len = len(com_pfx) 5706157Snate@binkert.org if com_pfx: 5716157Snate@binkert.org # do some cleanup and sanity checking on common prefix 5726157Snate@binkert.org if com_pfx[-1] == ".": 5736157Snate@binkert.org # prefix matches all but file extension: ok 5745397Ssaidi@eecs.umich.edu # back up one to change 'foo.cc -> o' to 'foo.cc -> .o' 5755397Ssaidi@eecs.umich.edu com_pfx = com_pfx[0:-1] 5766121Snate@binkert.org elif com_pfx[-1] == "/": 5776121Snate@binkert.org # common prefix is directory path: OK 5786121Snate@binkert.org pass 5796121Snate@binkert.org else: 5806121Snate@binkert.org src0_len = len(srcs[0]) 5816121Snate@binkert.org tgt0_len = len(tgts[0]) 5825397Ssaidi@eecs.umich.edu if src0_len == com_pfx_len: 5831851SN/A # source is a substring of target, OK 5841851SN/A pass 5857739Sgblack@eecs.umich.edu elif tgt0_len == com_pfx_len: 586955SN/A # target is a substring of source, need to back up to 5879396Sandreas.hansson@arm.com # avoid empty string on RHS of arrow 5889396Sandreas.hansson@arm.com sep_idx = com_pfx.rfind(".") 5899396Sandreas.hansson@arm.com if sep_idx != -1: 5909396Sandreas.hansson@arm.com com_pfx = com_pfx[0:sep_idx] 5919396Sandreas.hansson@arm.com else: 5929396Sandreas.hansson@arm.com com_pfx = '' 5939396Sandreas.hansson@arm.com elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".": 5949396Sandreas.hansson@arm.com # still splitting at file extension: ok 5959396Sandreas.hansson@arm.com pass 5969396Sandreas.hansson@arm.com else: 5979396Sandreas.hansson@arm.com # probably a fluke; ignore it 5989396Sandreas.hansson@arm.com com_pfx = '' 5999396Sandreas.hansson@arm.com # recalculate length in case com_pfx was modified 6009396Sandreas.hansson@arm.com com_pfx_len = len(com_pfx) 6019396Sandreas.hansson@arm.com def fmt(files): 6029396Sandreas.hansson@arm.com f = map(lambda s: s[com_pfx_len:], files) 6039477Sandreas.hansson@arm.com return ', '.join(f) 6049477Sandreas.hansson@arm.com return self.format % (com_pfx, fmt(srcs), fmt(tgts)) 6059477Sandreas.hansson@arm.com 6069477Sandreas.hansson@arm.comExport('Transform') 6079477Sandreas.hansson@arm.com 6089477Sandreas.hansson@arm.com# enable the regression script to use the termcap 6099477Sandreas.hansson@arm.commain['TERMCAP'] = termcap 6109477Sandreas.hansson@arm.com 6119477Sandreas.hansson@arm.comif GetOption('verbose'): 6129477Sandreas.hansson@arm.com def MakeAction(action, string, *args, **kwargs): 6139477Sandreas.hansson@arm.com return Action(action, *args, **kwargs) 6149477Sandreas.hansson@arm.comelse: 6159477Sandreas.hansson@arm.com MakeAction = Action 6169477Sandreas.hansson@arm.com main['CCCOMSTR'] = Transform("CC") 6179477Sandreas.hansson@arm.com main['CXXCOMSTR'] = Transform("CXX") 6189477Sandreas.hansson@arm.com main['ASCOMSTR'] = Transform("AS") 6199477Sandreas.hansson@arm.com main['SWIGCOMSTR'] = Transform("SWIG") 6209477Sandreas.hansson@arm.com main['ARCOMSTR'] = Transform("AR", 0) 6219477Sandreas.hansson@arm.com main['LINKCOMSTR'] = Transform("LINK", 0) 6229477Sandreas.hansson@arm.com main['RANLIBCOMSTR'] = Transform("RANLIB", 0) 6239477Sandreas.hansson@arm.com main['M4COMSTR'] = Transform("M4") 6249477Sandreas.hansson@arm.com main['SHCCCOMSTR'] = Transform("SHCC") 6259396Sandreas.hansson@arm.com main['SHCXXCOMSTR'] = Transform("SHCXX") 6262667Sstever@eecs.umich.eduExport('MakeAction') 62710710Sandreas.hansson@arm.com 62810710Sandreas.hansson@arm.com# Initialize the Link-Time Optimization (LTO) flags 62910710Sandreas.hansson@arm.commain['LTO_CCFLAGS'] = [] 63011811Sbaz21@cam.ac.ukmain['LTO_LDFLAGS'] = [] 63111811Sbaz21@cam.ac.uk 63211811Sbaz21@cam.ac.uk# According to the readme, tcmalloc works best if the compiler doesn't 63311811Sbaz21@cam.ac.uk# assume that we're using the builtin malloc and friends. These flags 63411811Sbaz21@cam.ac.uk# are compiler-specific, so we need to set them after we detect which 63511811Sbaz21@cam.ac.uk# compiler we're using. 63610710Sandreas.hansson@arm.commain['TCMALLOC_CCFLAGS'] = [] 63710710Sandreas.hansson@arm.com 63810710Sandreas.hansson@arm.comCXX_version = readCommand([main['CXX'],'--version'], exception=False) 63910710Sandreas.hansson@arm.comCXX_V = readCommand([main['CXX'],'-V'], exception=False) 64010384SCurtis.Dunham@arm.com 6419986Sandreas@sandberg.pp.semain['GCC'] = CXX_version and CXX_version.find('g++') >= 0 6429986Sandreas@sandberg.pp.semain['CLANG'] = CXX_version and CXX_version.find('clang') >= 0 6439986Sandreas@sandberg.pp.seif main['GCC'] + main['CLANG'] > 1: 6449986Sandreas@sandberg.pp.se print 'Error: How can we have two at the same time?' 6459986Sandreas@sandberg.pp.se Exit(1) 6469986Sandreas@sandberg.pp.se 6479986Sandreas@sandberg.pp.se# Set up default C++ compiler flags 6489986Sandreas@sandberg.pp.seif main['GCC'] or main['CLANG']: 6499986Sandreas@sandberg.pp.se # As gcc and clang share many flags, do the common parts here 6509986Sandreas@sandberg.pp.se main.Append(CCFLAGS=['-pipe']) 6519986Sandreas@sandberg.pp.se main.Append(CCFLAGS=['-fno-strict-aliasing']) 6529986Sandreas@sandberg.pp.se # Enable -Wall and -Wextra and then disable the few warnings that 6539986Sandreas@sandberg.pp.se # we consistently violate 6549986Sandreas@sandberg.pp.se main.Append(CCFLAGS=['-Wall', '-Wundef', '-Wextra', 6559986Sandreas@sandberg.pp.se '-Wno-sign-compare', '-Wno-unused-parameter']) 6569986Sandreas@sandberg.pp.se # We always compile using C++11 6579986Sandreas@sandberg.pp.se main.Append(CXXFLAGS=['-std=c++11']) 6589986Sandreas@sandberg.pp.se if sys.platform.startswith('freebsd'): 6599986Sandreas@sandberg.pp.se main.Append(CCFLAGS=['-I/usr/local/include']) 6609986Sandreas@sandberg.pp.se main.Append(CXXFLAGS=['-I/usr/local/include']) 6612638Sstever@eecs.umich.eduelse: 6622638Sstever@eecs.umich.edu print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 6636121Snate@binkert.org print "Don't know what compiler options to use for your compiler." 6643716Sstever@eecs.umich.edu print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 6655522Snate@binkert.org print termcap.Yellow + ' version:' + termcap.Normal, 6669986Sandreas@sandberg.pp.se if not CXX_version: 6679986Sandreas@sandberg.pp.se print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 6689986Sandreas@sandberg.pp.se termcap.Normal 6695522Snate@binkert.org else: 6705227Ssaidi@eecs.umich.edu print CXX_version.replace('\n', '<nl>') 6715227Ssaidi@eecs.umich.edu print " If you're trying to use a compiler other than GCC" 6725227Ssaidi@eecs.umich.edu print " or clang, there appears to be something wrong with your" 6735227Ssaidi@eecs.umich.edu print " environment." 6746654Snate@binkert.org print " " 6756654Snate@binkert.org print " If you are trying to use a compiler other than those listed" 6767769SAli.Saidi@ARM.com print " above you will need to ease fix SConstruct and " 6777769SAli.Saidi@ARM.com print " src/SConscript to support that compiler." 6787769SAli.Saidi@ARM.com Exit(1) 6797769SAli.Saidi@ARM.com 6805227Ssaidi@eecs.umich.eduif main['GCC']: 6815227Ssaidi@eecs.umich.edu # Check for a supported version of gcc. >= 4.8 is chosen for its 6825227Ssaidi@eecs.umich.edu # level of c++11 support. See 6835204Sstever@gmail.com # http://gcc.gnu.org/projects/cxx0x.html for details. 6845204Sstever@gmail.com gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 6855204Sstever@gmail.com if compareVersions(gcc_version, "4.8") < 0: 6865204Sstever@gmail.com print 'Error: gcc version 4.8 or newer required.' 6875204Sstever@gmail.com print ' Installed version:', gcc_version 6885204Sstever@gmail.com Exit(1) 6895204Sstever@gmail.com 6905204Sstever@gmail.com main['GCC_VERSION'] = gcc_version 6915204Sstever@gmail.com 6925204Sstever@gmail.com # gcc from version 4.8 and above generates "rep; ret" instructions 6935204Sstever@gmail.com # to avoid performance penalties on certain AMD chips. Older 6945204Sstever@gmail.com # assemblers detect this as an error, "Error: expecting string 6955204Sstever@gmail.com # instruction after `rep'" 6965204Sstever@gmail.com as_version_raw = readCommand([main['AS'], '-v', '/dev/null'], 6975204Sstever@gmail.com exception=False).split() 6985204Sstever@gmail.com 6995204Sstever@gmail.com # version strings may contain extra distro-specific 7006121Snate@binkert.org # qualifiers, so play it safe and keep only what comes before 7015204Sstever@gmail.com # the first hyphen 7027727SAli.Saidi@ARM.com as_version = as_version_raw[-1].split('-')[0] if as_version_raw else None 7037727SAli.Saidi@ARM.com 7047727SAli.Saidi@ARM.com if not as_version or compareVersions(as_version, "2.23") < 0: 7057727SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + \ 7067727SAli.Saidi@ARM.com 'Warning: This combination of gcc and binutils have' + \ 70711988Sandreas.sandberg@arm.com ' known incompatibilities.\n' + \ 70811988Sandreas.sandberg@arm.com ' If you encounter build problems, please update ' + \ 70910453SAndrew.Bardsley@arm.com 'binutils to 2.23.' + \ 71010453SAndrew.Bardsley@arm.com termcap.Normal 71110453SAndrew.Bardsley@arm.com 71210453SAndrew.Bardsley@arm.com # Make sure we warn if the user has requested to compile with the 71310453SAndrew.Bardsley@arm.com # Undefined Benahvior Sanitizer and this version of gcc does not 71410453SAndrew.Bardsley@arm.com # support it. 71510453SAndrew.Bardsley@arm.com if GetOption('with_ubsan') and \ 71610453SAndrew.Bardsley@arm.com compareVersions(gcc_version, '4.9') < 0: 71710453SAndrew.Bardsley@arm.com print termcap.Yellow + termcap.Bold + \ 71810453SAndrew.Bardsley@arm.com 'Warning: UBSan is only supported using gcc 4.9 and later.' + \ 71910160Sandreas.hansson@arm.com termcap.Normal 72010453SAndrew.Bardsley@arm.com 72110453SAndrew.Bardsley@arm.com # Add the appropriate Link-Time Optimization (LTO) flags 72210453SAndrew.Bardsley@arm.com # unless LTO is explicitly turned off. Note that these flags 72310453SAndrew.Bardsley@arm.com # are only used by the fast target. 72410453SAndrew.Bardsley@arm.com if not GetOption('no_lto'): 72510453SAndrew.Bardsley@arm.com # Pass the LTO flag when compiling to produce GIMPLE 72610453SAndrew.Bardsley@arm.com # output, we merely create the flags here and only append 72710453SAndrew.Bardsley@arm.com # them later 7289812Sandreas.hansson@arm.com main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 72910453SAndrew.Bardsley@arm.com 73010453SAndrew.Bardsley@arm.com # Use the same amount of jobs for LTO as we are running 73110453SAndrew.Bardsley@arm.com # scons with 73210453SAndrew.Bardsley@arm.com main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 73310453SAndrew.Bardsley@arm.com 73410453SAndrew.Bardsley@arm.com main.Append(TCMALLOC_CCFLAGS=['-fno-builtin-malloc', '-fno-builtin-calloc', 73510453SAndrew.Bardsley@arm.com '-fno-builtin-realloc', '-fno-builtin-free']) 73610453SAndrew.Bardsley@arm.com 73710453SAndrew.Bardsley@arm.com # add option to check for undeclared overrides 73810453SAndrew.Bardsley@arm.com if compareVersions(gcc_version, "5.0") > 0: 73910453SAndrew.Bardsley@arm.com main.Append(CCFLAGS=['-Wno-error=suggest-override']) 74010453SAndrew.Bardsley@arm.com 7417727SAli.Saidi@ARM.comelif main['CLANG']: 74210453SAndrew.Bardsley@arm.com # Check for a supported version of clang, >= 3.1 is needed to 74310453SAndrew.Bardsley@arm.com # support similar features as gcc 4.8. See 74410453SAndrew.Bardsley@arm.com # http://clang.llvm.org/cxx_status.html for details 74510453SAndrew.Bardsley@arm.com clang_version_re = re.compile(".* version (\d+\.\d+)") 74610453SAndrew.Bardsley@arm.com clang_version_match = clang_version_re.search(CXX_version) 7473118Sstever@eecs.umich.edu if (clang_version_match): 74810453SAndrew.Bardsley@arm.com clang_version = clang_version_match.groups()[0] 74910453SAndrew.Bardsley@arm.com if compareVersions(clang_version, "3.1") < 0: 75010453SAndrew.Bardsley@arm.com print 'Error: clang version 3.1 or newer required.' 75110453SAndrew.Bardsley@arm.com print ' Installed version:', clang_version 7523118Sstever@eecs.umich.edu Exit(1) 7533483Ssaidi@eecs.umich.edu else: 7543494Ssaidi@eecs.umich.edu print 'Error: Unable to determine clang version.' 7553494Ssaidi@eecs.umich.edu Exit(1) 7563483Ssaidi@eecs.umich.edu 7573483Ssaidi@eecs.umich.edu # clang has a few additional warnings that we disable, extraneous 7583483Ssaidi@eecs.umich.edu # parantheses are allowed due to Ruby's printing of the AST, 7593053Sstever@eecs.umich.edu # finally self assignments are allowed as the generated CPU code 7603053Sstever@eecs.umich.edu # is relying on this 7613918Ssaidi@eecs.umich.edu main.Append(CCFLAGS=['-Wno-parentheses', 7623053Sstever@eecs.umich.edu '-Wno-self-assign', 7633053Sstever@eecs.umich.edu # Some versions of libstdc++ (4.8?) seem to 7643053Sstever@eecs.umich.edu # use struct hash and class hash 7653053Sstever@eecs.umich.edu # interchangeably. 7663053Sstever@eecs.umich.edu '-Wno-mismatched-tags', 7679396Sandreas.hansson@arm.com ]) 7689396Sandreas.hansson@arm.com 7699396Sandreas.hansson@arm.com main.Append(TCMALLOC_CCFLAGS=['-fno-builtin']) 7709396Sandreas.hansson@arm.com 7719396Sandreas.hansson@arm.com # On Mac OS X/Darwin we need to also use libc++ (part of XCode) as 7729396Sandreas.hansson@arm.com # opposed to libstdc++, as the later is dated. 7739396Sandreas.hansson@arm.com if sys.platform == "darwin": 7749396Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-stdlib=libc++']) 7759396Sandreas.hansson@arm.com main.Append(LIBS=['c++']) 7769477Sandreas.hansson@arm.com 7779396Sandreas.hansson@arm.com # On FreeBSD we need libthr. 7789477Sandreas.hansson@arm.com if sys.platform.startswith('freebsd'): 7799477Sandreas.hansson@arm.com main.Append(LIBS=['thr']) 7809477Sandreas.hansson@arm.com 7819477Sandreas.hansson@arm.comelse: 7829396Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 7837840Snate@binkert.org print "Don't know what compiler options to use for your compiler." 7847865Sgblack@eecs.umich.edu print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 7857865Sgblack@eecs.umich.edu print termcap.Yellow + ' version:' + termcap.Normal, 7867865Sgblack@eecs.umich.edu if not CXX_version: 7877865Sgblack@eecs.umich.edu print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 7887865Sgblack@eecs.umich.edu termcap.Normal 7897840Snate@binkert.org else: 7909900Sandreas@sandberg.pp.se print CXX_version.replace('\n', '<nl>') 7919900Sandreas@sandberg.pp.se print " If you're trying to use a compiler other than GCC" 7929900Sandreas@sandberg.pp.se print " or clang, there appears to be something wrong with your" 7939900Sandreas@sandberg.pp.se print " environment." 79410456SCurtis.Dunham@arm.com print " " 79510456SCurtis.Dunham@arm.com print " If you are trying to use a compiler other than those listed" 79610456SCurtis.Dunham@arm.com print " above you will need to ease fix SConstruct and " 79710456SCurtis.Dunham@arm.com print " src/SConscript to support that compiler." 79810456SCurtis.Dunham@arm.com Exit(1) 79910456SCurtis.Dunham@arm.com 80010456SCurtis.Dunham@arm.com# Set up common yacc/bison flags (needed for Ruby) 80110456SCurtis.Dunham@arm.commain['YACCFLAGS'] = '-d' 80210456SCurtis.Dunham@arm.commain['YACCHXXFILESUFFIX'] = '.hh' 80310456SCurtis.Dunham@arm.com 8049045SAli.Saidi@ARM.com# Do this after we save setting back, or else we'll tack on an 80511235Sandreas.sandberg@arm.com# extra 'qdo' every time we run scons. 80611235Sandreas.sandberg@arm.comif main['BATCH']: 80711235Sandreas.sandberg@arm.com main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 80811235Sandreas.sandberg@arm.com main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 80911235Sandreas.sandberg@arm.com main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 81011235Sandreas.sandberg@arm.com main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 81111235Sandreas.sandberg@arm.com main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 81211235Sandreas.sandberg@arm.com 81311811Sbaz21@cam.ac.ukif sys.platform == 'cygwin': 81411811Sbaz21@cam.ac.uk # cygwin has some header file issues... 81511811Sbaz21@cam.ac.uk main.Append(CCFLAGS=["-Wno-uninitialized"]) 81611811Sbaz21@cam.ac.uk 81711811Sbaz21@cam.ac.uk# Check for the protobuf compiler 81811235Sandreas.sandberg@arm.comprotoc_version = readCommand([main['PROTOC'], '--version'], 81911235Sandreas.sandberg@arm.com exception='').split() 82011235Sandreas.sandberg@arm.com 82111235Sandreas.sandberg@arm.com# First two words should be "libprotoc x.y.z" 82211235Sandreas.sandberg@arm.comif len(protoc_version) < 2 or protoc_version[0] != 'libprotoc': 82311235Sandreas.sandberg@arm.com print termcap.Yellow + termcap.Bold + \ 82411235Sandreas.sandberg@arm.com 'Warning: Protocol buffer compiler (protoc) not found.\n' + \ 8257840Snate@binkert.org ' Please install protobuf-compiler for tracing support.' + \ 8267840Snate@binkert.org termcap.Normal 8277840Snate@binkert.org main['PROTOC'] = False 8281858SN/Aelse: 8291858SN/A # Based on the availability of the compress stream wrappers, 8301858SN/A # require 2.1.0 8311858SN/A min_protoc_version = '2.1.0' 8321858SN/A if compareVersions(protoc_version[1], min_protoc_version) < 0: 8331858SN/A print termcap.Yellow + termcap.Bold + \ 83412230Sgiacomo.travaglini@arm.com 'Warning: protoc version', min_protoc_version, \ 83512230Sgiacomo.travaglini@arm.com 'or newer required.\n' + \ 83612230Sgiacomo.travaglini@arm.com ' Installed version:', protoc_version[1], \ 83712230Sgiacomo.travaglini@arm.com termcap.Normal 83812230Sgiacomo.travaglini@arm.com main['PROTOC'] = False 83912230Sgiacomo.travaglini@arm.com else: 84012230Sgiacomo.travaglini@arm.com # Attempt to determine the appropriate include path and 84112230Sgiacomo.travaglini@arm.com # library path using pkg-config, that means we also need to 8429903Sandreas.hansson@arm.com # check for pkg-config. Note that it is possible to use 8439903Sandreas.hansson@arm.com # protobuf without the involvement of pkg-config. Later on we 8449903Sandreas.hansson@arm.com # check go a library config check and at that point the test 8459903Sandreas.hansson@arm.com # will fail if libprotobuf cannot be found. 84610841Sandreas.sandberg@arm.com if readCommand(['pkg-config', '--version'], exception=''): 8479651SAndreas.Sandberg@ARM.com try: 8489903Sandreas.hansson@arm.com # Attempt to establish what linking flags to add for protobuf 8499651SAndreas.Sandberg@ARM.com # using pkg-config 8509651SAndreas.Sandberg@ARM.com main.ParseConfig('pkg-config --cflags --libs-only-L protobuf') 85112056Sgabeblack@google.com except: 85212056Sgabeblack@google.com print termcap.Yellow + termcap.Bold + \ 85312056Sgabeblack@google.com 'Warning: pkg-config could not get protobuf flags.' + \ 85412056Sgabeblack@google.com termcap.Normal 85512056Sgabeblack@google.com 85610841Sandreas.sandberg@arm.com# Check for SWIG 85710841Sandreas.sandberg@arm.comif not main.has_key('SWIG'): 85810841Sandreas.sandberg@arm.com print 'Error: SWIG utility not found.' 85910841Sandreas.sandberg@arm.com print ' Please install (see http://www.swig.org) and retry.' 86010841Sandreas.sandberg@arm.com Exit(1) 86110841Sandreas.sandberg@arm.com 8629651SAndreas.Sandberg@ARM.com# Check for appropriate SWIG version 8639651SAndreas.Sandberg@ARM.comswig_version = readCommand([main['SWIG'], '-version'], exception='').split() 8649651SAndreas.Sandberg@ARM.com# First 3 words should be "SWIG Version x.y.z" 8659651SAndreas.Sandberg@ARM.comif len(swig_version) < 3 or \ 8669651SAndreas.Sandberg@ARM.com swig_version[0] != 'SWIG' or swig_version[1] != 'Version': 8679651SAndreas.Sandberg@ARM.com print 'Error determining SWIG version.' 8689651SAndreas.Sandberg@ARM.com Exit(1) 8699651SAndreas.Sandberg@ARM.com 8709651SAndreas.Sandberg@ARM.commin_swig_version = '2.0.4' 87110841Sandreas.sandberg@arm.comif compareVersions(swig_version[2], min_swig_version) < 0: 87210841Sandreas.sandberg@arm.com print 'Error: SWIG version', min_swig_version, 'or newer required.' 87310841Sandreas.sandberg@arm.com print ' Installed version:', swig_version[2] 87410841Sandreas.sandberg@arm.com Exit(1) 87510841Sandreas.sandberg@arm.com 87610841Sandreas.sandberg@arm.com# Check for known incompatibilities. The standard library shipped with 87710860Sandreas.sandberg@arm.com# gcc >= 4.9 does not play well with swig versions prior to 3.0 87810841Sandreas.sandberg@arm.comif main['GCC'] and compareVersions(gcc_version, '4.9') >= 0 and \ 87910841Sandreas.sandberg@arm.com compareVersions(swig_version[2], '3.0') < 0: 88010841Sandreas.sandberg@arm.com print termcap.Yellow + termcap.Bold + \ 88110841Sandreas.sandberg@arm.com 'Warning: This combination of gcc and swig have' + \ 88210841Sandreas.sandberg@arm.com ' known incompatibilities.\n' + \ 88310841Sandreas.sandberg@arm.com ' If you encounter build problems, please update ' + \ 88410841Sandreas.sandberg@arm.com 'swig to 3.0 or later.' + \ 88510841Sandreas.sandberg@arm.com termcap.Normal 88610841Sandreas.sandberg@arm.com 88710841Sandreas.sandberg@arm.com# Set up SWIG flags & scanner 88810841Sandreas.sandberg@arm.comswig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS') 8899651SAndreas.Sandberg@ARM.commain.Append(SWIGFLAGS=swig_flags) 8909651SAndreas.Sandberg@ARM.com 8919986Sandreas@sandberg.pp.se# Check for 'timeout' from GNU coreutils. If present, regressions will 8929986Sandreas@sandberg.pp.se# be run with a time limit. We require version 8.13 since we rely on 8939986Sandreas@sandberg.pp.se# support for the '--foreground' option. 8949986Sandreas@sandberg.pp.seif sys.platform.startswith('freebsd'): 8959986Sandreas@sandberg.pp.se timeout_lines = readCommand(['gtimeout', '--version'], 8969986Sandreas@sandberg.pp.se exception='').splitlines() 8975863Snate@binkert.orgelse: 8985863Snate@binkert.org timeout_lines = readCommand(['timeout', '--version'], 8995863Snate@binkert.org exception='').splitlines() 9005863Snate@binkert.org# Get the first line and tokenize it 9016121Snate@binkert.orgtimeout_version = timeout_lines[0].split() if timeout_lines else [] 9021858SN/Amain['TIMEOUT'] = timeout_version and \ 9035863Snate@binkert.org compareVersions(timeout_version[-1], '8.13') >= 0 9045863Snate@binkert.org 9055863Snate@binkert.org# filter out all existing swig scanners, they mess up the dependency 9065863Snate@binkert.org# stuff for some reason 9075863Snate@binkert.orgscanners = [] 9082139SN/Afor scanner in main['SCANNERS']: 9094202Sbinkertn@umich.edu skeys = scanner.skeys 91011308Santhony.gutierrez@amd.com if skeys == '.i': 9114202Sbinkertn@umich.edu continue 91211308Santhony.gutierrez@amd.com 9132139SN/A if isinstance(skeys, (list, tuple)) and '.i' in skeys: 9146994Snate@binkert.org continue 9156994Snate@binkert.org 9166994Snate@binkert.org scanners.append(scanner) 9176994Snate@binkert.org 9186994Snate@binkert.org# add the new swig scanner that we like better 9196994Snate@binkert.orgfrom SCons.Scanner import ClassicCPP as CPPScanner 9206994Snate@binkert.orgswig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")' 9216994Snate@binkert.orgscanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re)) 92210319SAndreas.Sandberg@ARM.com 9236994Snate@binkert.org# replace the scanners list that has what we want 9246994Snate@binkert.orgmain['SCANNERS'] = scanners 9256994Snate@binkert.org 9266994Snate@binkert.org# Add a custom Check function to test for structure members. 9276994Snate@binkert.orgdef CheckMember(context, include, decl, member, include_quotes="<>"): 9286994Snate@binkert.org context.Message("Checking for member %s in %s..." % 9296994Snate@binkert.org (member, decl)) 9306994Snate@binkert.org text = """ 9316994Snate@binkert.org#include %(header)s 9326994Snate@binkert.orgint main(){ 9336994Snate@binkert.org %(decl)s test; 9342155SN/A (void)test.%(member)s; 9355863Snate@binkert.org return 0; 9361869SN/A}; 9371869SN/A""" % { "header" : include_quotes[0] + include + include_quotes[1], 9385863Snate@binkert.org "decl" : decl, 9395863Snate@binkert.org "member" : member, 9404202Sbinkertn@umich.edu } 9416108Snate@binkert.org 9426108Snate@binkert.org ret = context.TryCompile(text, extension=".cc") 9436108Snate@binkert.org context.Result(ret) 9446108Snate@binkert.org return ret 9459219Spower.jg@gmail.com 9469219Spower.jg@gmail.com# Platform-specific configuration. Note again that we assume that all 9479219Spower.jg@gmail.com# builds under a given build root run on the same host platform. 9489219Spower.jg@gmail.comconf = Configure(main, 9499219Spower.jg@gmail.com conf_dir = joinpath(build_root, '.scons_config'), 9509219Spower.jg@gmail.com log_file = joinpath(build_root, 'scons_config.log'), 9519219Spower.jg@gmail.com custom_tests = { 9529219Spower.jg@gmail.com 'CheckMember' : CheckMember, 9534202Sbinkertn@umich.edu }) 9545863Snate@binkert.org 95510135SCurtis.Dunham@arm.com# Check if we should compile a 64 bit binary on Mac OS X/Darwin 9568474Sgblack@eecs.umich.edutry: 9575742Snate@binkert.org import platform 9588268Ssteve.reinhardt@amd.com uname = platform.uname() 9598268Ssteve.reinhardt@amd.com if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0: 9608268Ssteve.reinhardt@amd.com if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]): 9615742Snate@binkert.org main.Append(CCFLAGS=['-arch', 'x86_64']) 9625341Sstever@gmail.com main.Append(CFLAGS=['-arch', 'x86_64']) 9638474Sgblack@eecs.umich.edu main.Append(LINKFLAGS=['-arch', 'x86_64']) 9648474Sgblack@eecs.umich.edu main.Append(ASFLAGS=['-arch', 'x86_64']) 9655342Sstever@gmail.comexcept: 9664202Sbinkertn@umich.edu pass 9674202Sbinkertn@umich.edu 96811308Santhony.gutierrez@amd.com# Recent versions of scons substitute a "Null" object for Configure() 9694202Sbinkertn@umich.edu# when configuration isn't necessary, e.g., if the "--help" option is 9705863Snate@binkert.org# present. Unfortuantely this Null object always returns false, 9715863Snate@binkert.org# breaking all our configuration checks. We replace it with our own 97211308Santhony.gutierrez@amd.com# more optimistic null object that returns True instead. 9736994Snate@binkert.orgif not conf: 9746994Snate@binkert.org def NullCheck(*args, **kwargs): 97510319SAndreas.Sandberg@ARM.com return True 9765863Snate@binkert.org 9775863Snate@binkert.org class NullConf: 9785863Snate@binkert.org def __init__(self, env): 9795863Snate@binkert.org self.env = env 9805863Snate@binkert.org def Finish(self): 9815863Snate@binkert.org return self.env 9825863Snate@binkert.org def __getattr__(self, mname): 9835863Snate@binkert.org return NullCheck 9847840Snate@binkert.org 9855863Snate@binkert.org conf = NullConf(main) 98612230Sgiacomo.travaglini@arm.com 98712230Sgiacomo.travaglini@arm.com# Cache build files in the supplied directory. 98812230Sgiacomo.travaglini@arm.comif main['M5_BUILD_CACHE']: 98912230Sgiacomo.travaglini@arm.com print 'Using build cache located at', main['M5_BUILD_CACHE'] 99012230Sgiacomo.travaglini@arm.com CacheDir(main['M5_BUILD_CACHE']) 99112056Sgabeblack@google.com 99212056Sgabeblack@google.comif not GetOption('without_python'): 99312056Sgabeblack@google.com # Find Python include and library directories for embedding the 99411308Santhony.gutierrez@amd.com # interpreter. We rely on python-config to resolve the appropriate 9959219Spower.jg@gmail.com # includes and linker flags. ParseConfig does not seem to understand 9969219Spower.jg@gmail.com # the more exotic linker flags such as -Xlinker and -export-dynamic so 99711235Sandreas.sandberg@arm.com # we add them explicitly below. If you want to link in an alternate 99811235Sandreas.sandberg@arm.com # version of python, see above for instructions on how to invoke 9991869SN/A # scons with the appropriate PATH set. 10001858SN/A # 10015863Snate@binkert.org # First we check if python2-config exists, else we use python-config 100211308Santhony.gutierrez@amd.com python_config = readCommand(['which', 'python2-config'], 100312061Sjason@lowepower.com exception='').strip() 100412230Sgiacomo.travaglini@arm.com if not os.path.exists(python_config): 100512230Sgiacomo.travaglini@arm.com python_config = readCommand(['which', 'python-config'], 10061858SN/A exception='').strip() 1007955SN/A py_includes = readCommand([python_config, '--includes'], 1008955SN/A exception='').split() 10091869SN/A # Strip the -I from the include folders before adding them to the 10101869SN/A # CPPPATH 10111869SN/A main.Append(CPPPATH=map(lambda inc: inc[2:], py_includes)) 10121869SN/A 10131869SN/A # Read the linker flags and split them into libraries and other link 10145863Snate@binkert.org # flags. The libraries are added later through the call the CheckLib. 10155863Snate@binkert.org py_ld_flags = readCommand([python_config, '--ldflags'], 10165863Snate@binkert.org exception='').split() 10171869SN/A py_libs = [] 10185863Snate@binkert.org for lib in py_ld_flags: 10191869SN/A if not lib.startswith('-l'): 10205863Snate@binkert.org main.Append(LINKFLAGS=[lib]) 10211869SN/A else: 10221869SN/A lib = lib[2:] 10231869SN/A if lib not in py_libs: 10241869SN/A py_libs.append(lib) 10258483Sgblack@eecs.umich.edu 10261869SN/A # verify that this stuff works 10271869SN/A if not conf.CheckHeader('Python.h', '<>'): 10281869SN/A print "Error: can't find Python.h header in", py_includes 10291869SN/A print "Install Python headers (package python-dev on Ubuntu and RedHat)" 10305863Snate@binkert.org Exit(1) 10315863Snate@binkert.org 10321869SN/A for lib in py_libs: 10335863Snate@binkert.org if not conf.CheckLib(lib): 10345863Snate@binkert.org print "Error: can't find library %s required by python" % lib 10353356Sbinkertn@umich.edu Exit(1) 10363356Sbinkertn@umich.edu 10373356Sbinkertn@umich.edu# On Solaris you need to use libsocket for socket ops 10383356Sbinkertn@umich.eduif not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 10393356Sbinkertn@umich.edu if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 10404781Snate@binkert.org print "Can't find library with socket calls (e.g. accept())" 10415863Snate@binkert.org Exit(1) 10425863Snate@binkert.org 10431869SN/A# Check for zlib. If the check passes, libz will be automatically 10441869SN/A# added to the LIBS environment variable. 10451869SN/Aif not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 10466121Snate@binkert.org print 'Error: did not find needed zlib compression library '\ 10471869SN/A 'and/or zlib.h header file.' 104811982Sgabeblack@google.com print ' Please install zlib and try again.' 104911982Sgabeblack@google.com Exit(1) 105011982Sgabeblack@google.com 105111982Sgabeblack@google.com# If we have the protobuf compiler, also make sure we have the 105211982Sgabeblack@google.com# development libraries. If the check passes, libprotobuf will be 105311982Sgabeblack@google.com# automatically added to the LIBS environment variable. After 105411982Sgabeblack@google.com# this, we can use the HAVE_PROTOBUF flag to determine if we have 105511982Sgabeblack@google.com# got both protoc and libprotobuf available. 105611982Sgabeblack@google.commain['HAVE_PROTOBUF'] = main['PROTOC'] and \ 105711982Sgabeblack@google.com conf.CheckLibWithHeader('protobuf', 'google/protobuf/message.h', 105811982Sgabeblack@google.com 'C++', 'GOOGLE_PROTOBUF_VERIFY_VERSION;') 105911982Sgabeblack@google.com 106011982Sgabeblack@google.com# If we have the compiler but not the library, print another warning. 106111982Sgabeblack@google.comif main['PROTOC'] and not main['HAVE_PROTOBUF']: 106211982Sgabeblack@google.com print termcap.Yellow + termcap.Bold + \ 106311982Sgabeblack@google.com 'Warning: did not find protocol buffer library and/or headers.\n' + \ 106411982Sgabeblack@google.com ' Please install libprotobuf-dev for tracing support.' + \ 106511982Sgabeblack@google.com termcap.Normal 106611982Sgabeblack@google.com 106711982Sgabeblack@google.com# Check for librt. 106811982Sgabeblack@google.comhave_posix_clock = \ 106911982Sgabeblack@google.com conf.CheckLibWithHeader(None, 'time.h', 'C', 107011982Sgabeblack@google.com 'clock_nanosleep(0,0,NULL,NULL);') or \ 107111982Sgabeblack@google.com conf.CheckLibWithHeader('rt', 'time.h', 'C', 107211982Sgabeblack@google.com 'clock_nanosleep(0,0,NULL,NULL);') 107311982Sgabeblack@google.com 107411978Sgabeblack@google.comhave_posix_timers = \ 107511978Sgabeblack@google.com conf.CheckLibWithHeader([None, 'rt'], [ 'time.h', 'signal.h' ], 'C', 107612034Sgabeblack@google.com 'timer_create(CLOCK_MONOTONIC, NULL, NULL);') 107711978Sgabeblack@google.com 107811978Sgabeblack@google.comif not GetOption('without_tcmalloc'): 107911978Sgabeblack@google.com if conf.CheckLib('tcmalloc'): 108012034Sgabeblack@google.com main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 108111978Sgabeblack@google.com elif conf.CheckLib('tcmalloc_minimal'): 108211978Sgabeblack@google.com main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 108310915Sandreas.sandberg@arm.com else: 108411986Sandreas.sandberg@arm.com print termcap.Yellow + termcap.Bold + \ 108511986Sandreas.sandberg@arm.com "You can get a 12% performance improvement by "\ 10861869SN/A "installing tcmalloc (libgoogle-perftools-dev package "\ 10871869SN/A "on Ubuntu or RedHat)." + termcap.Normal 108812015Sgabeblack@google.com 108912015Sgabeblack@google.com 109012015Sgabeblack@google.com# Detect back trace implementations. The last implementation in the 109112015Sgabeblack@google.com# list will be used by default. 10923546Sgblack@eecs.umich.edubacktrace_impls = [ "none" ] 10933546Sgblack@eecs.umich.edu 10943546Sgblack@eecs.umich.eduif conf.CheckLibWithHeader(None, 'execinfo.h', 'C', 109512015Sgabeblack@google.com 'backtrace_symbols_fd((void*)0, 0, 0);'): 109612015Sgabeblack@google.com backtrace_impls.append("glibc") 109712015Sgabeblack@google.comelif conf.CheckLibWithHeader('execinfo', 'execinfo.h', 'C', 109812015Sgabeblack@google.com 'backtrace_symbols_fd((void*)0, 0, 0);'): 109912015Sgabeblack@google.com # NetBSD and FreeBSD need libexecinfo. 110012015Sgabeblack@google.com backtrace_impls.append("glibc") 110112015Sgabeblack@google.com main.Append(LIBS=['execinfo']) 110212015Sgabeblack@google.com 11033546Sgblack@eecs.umich.eduif backtrace_impls[-1] == "none": 110412015Sgabeblack@google.com default_backtrace_impl = "none" 110512015Sgabeblack@google.com print termcap.Yellow + termcap.Bold + \ 110610196SCurtis.Dunham@arm.com "No suitable back trace implementation found." + \ 110712015Sgabeblack@google.com termcap.Normal 110812015Sgabeblack@google.com 110912015Sgabeblack@google.comif not have_posix_clock: 111012015Sgabeblack@google.com print "Can't find library for POSIX clocks." 111112015Sgabeblack@google.com 111212015Sgabeblack@google.com# Check for <fenv.h> (C99 FP environment control) 111312015Sgabeblack@google.comhave_fenv = conf.CheckHeader('fenv.h', '<>') 111412015Sgabeblack@google.comif not have_fenv: 111512015Sgabeblack@google.com print "Warning: Header file <fenv.h> not found." 111612015Sgabeblack@google.com print " This host has no IEEE FP rounding mode control." 111712015Sgabeblack@google.com 11183546Sgblack@eecs.umich.edu# Check if we should enable KVM-based hardware virtualization. The API 11193546Sgblack@eecs.umich.edu# we rely on exists since version 2.6.36 of the kernel, but somehow 11203546Sgblack@eecs.umich.edu# the KVM_API_VERSION does not reflect the change. We test for one of 1121955SN/A# the types as a fall back. 1122955SN/Ahave_kvm = conf.CheckHeader('linux/kvm.h', '<>') 1123955SN/Aif not have_kvm: 1124955SN/A print "Info: Compatible header file <linux/kvm.h> not found, " \ 11255863Snate@binkert.org "disabling KVM support." 112610135SCurtis.Dunham@arm.com 112710135SCurtis.Dunham@arm.com# x86 needs support for xsave. We test for the structure here since we 11285343Sstever@gmail.com# won't be able to run new tests by the time we know which ISA we're 11295343Sstever@gmail.com# targeting. 11306121Snate@binkert.orghave_kvm_xsave = conf.CheckTypeSize('struct kvm_xsave', 11315863Snate@binkert.org '#include <linux/kvm.h>') != 0 11324773Snate@binkert.org 11335863Snate@binkert.org# Check if the requested target ISA is compatible with the host 11342632Sstever@eecs.umich.edudef is_isa_kvm_compatible(isa): 11355863Snate@binkert.org try: 11362023SN/A import platform 11375863Snate@binkert.org host_isa = platform.machine() 11385863Snate@binkert.org except: 11395863Snate@binkert.org print "Warning: Failed to determine host ISA." 11405863Snate@binkert.org return False 11415863Snate@binkert.org 11425863Snate@binkert.org if not have_posix_timers: 11435863Snate@binkert.org print "Warning: Can not enable KVM, host seems to lack support " \ 11445863Snate@binkert.org "for POSIX timers" 114510135SCurtis.Dunham@arm.com return False 114610135SCurtis.Dunham@arm.com 114712034Sgabeblack@google.com if isa == "arm": 114812034Sgabeblack@google.com return host_isa in ( "armv7l", "aarch64" ) 114912034Sgabeblack@google.com elif isa == "x86": 11502632Sstever@eecs.umich.edu if host_isa != "x86_64": 11515863Snate@binkert.org return False 11522023SN/A 11532632Sstever@eecs.umich.edu if not have_kvm_xsave: 11545863Snate@binkert.org print "KVM on x86 requires xsave support in kernel headers." 11555342Sstever@gmail.com return False 11565863Snate@binkert.org 11572632Sstever@eecs.umich.edu return True 11585863Snate@binkert.org else: 11595863Snate@binkert.org return False 11608267Ssteve.reinhardt@amd.com 11618120Sgblack@eecs.umich.edu 11628267Ssteve.reinhardt@amd.com# Check if the exclude_host attribute is available. We want this to 11638267Ssteve.reinhardt@amd.com# get accurate instruction counts in KVM. 11648267Ssteve.reinhardt@amd.commain['HAVE_PERF_ATTR_EXCLUDE_HOST'] = conf.CheckMember( 11658267Ssteve.reinhardt@amd.com 'linux/perf_event.h', 'struct perf_event_attr', 'exclude_host') 11668267Ssteve.reinhardt@amd.com 11678267Ssteve.reinhardt@amd.com 11688267Ssteve.reinhardt@amd.com###################################################################### 11698267Ssteve.reinhardt@amd.com# 11708267Ssteve.reinhardt@amd.com# Finish the configuration 11715863Snate@binkert.org# 11725863Snate@binkert.orgmain = conf.Finish() 11735863Snate@binkert.org 11742632Sstever@eecs.umich.edu###################################################################### 11758267Ssteve.reinhardt@amd.com# 11768267Ssteve.reinhardt@amd.com# Collect all non-global variables 11778267Ssteve.reinhardt@amd.com# 11782632Sstever@eecs.umich.edu 11791888SN/A# Define the universe of supported ISAs 11805863Snate@binkert.orgall_isa_list = [ ] 11815863Snate@binkert.orgall_gpu_isa_list = [ ] 11821858SN/AExport('all_isa_list') 11838120Sgblack@eecs.umich.eduExport('all_gpu_isa_list') 11848120Sgblack@eecs.umich.edu 11857756SAli.Saidi@ARM.comclass CpuModel(object): 11862598SN/A '''The CpuModel class encapsulates everything the ISA parser needs to 11875863Snate@binkert.org know about a particular CPU model.''' 11881858SN/A 11891858SN/A # Dict of available CPU model objects. Accessible as CpuModel.dict. 11901858SN/A dict = {} 11915863Snate@binkert.org 11921858SN/A # Constructor. Automatically adds models to CpuModel.dict. 11931858SN/A def __init__(self, name, default=False): 11941858SN/A self.name = name # name of model 11955863Snate@binkert.org 11961871SN/A # This cpu is enabled by default 11971858SN/A self.default = default 119812230Sgiacomo.travaglini@arm.com 119912230Sgiacomo.travaglini@arm.com # Add self to dict 120012230Sgiacomo.travaglini@arm.com if name in CpuModel.dict: 120112230Sgiacomo.travaglini@arm.com raise AttributeError, "CpuModel '%s' already registered" % name 120212230Sgiacomo.travaglini@arm.com CpuModel.dict[name] = self 120312230Sgiacomo.travaglini@arm.com 120412230Sgiacomo.travaglini@arm.comExport('CpuModel') 120512230Sgiacomo.travaglini@arm.com 12061858SN/A# Sticky variables get saved in the variables file so they persist from 12071858SN/A# one invocation to the next (unless overridden, in which case the new 12081858SN/A# value becomes sticky). 12099651SAndreas.Sandberg@ARM.comsticky_vars = Variables(args=ARGUMENTS) 12109651SAndreas.Sandberg@ARM.comExport('sticky_vars') 12119651SAndreas.Sandberg@ARM.com 12129651SAndreas.Sandberg@ARM.com# Sticky variables that should be exported 12139651SAndreas.Sandberg@ARM.comexport_vars = [] 12149651SAndreas.Sandberg@ARM.comExport('export_vars') 12159651SAndreas.Sandberg@ARM.com 12169651SAndreas.Sandberg@ARM.com# For Ruby 12179651SAndreas.Sandberg@ARM.comall_protocols = [] 121812056Sgabeblack@google.comExport('all_protocols') 121912056Sgabeblack@google.comprotocol_dirs = [] 122012056Sgabeblack@google.comExport('protocol_dirs') 122112056Sgabeblack@google.comslicc_includes = [] 122212056Sgabeblack@google.comExport('slicc_includes') 122311798Santhony.gutierrez@amd.com 122411798Santhony.gutierrez@amd.com# Walk the tree and execute all SConsopts scripts that wil add to the 122511798Santhony.gutierrez@amd.com# above variables 12269986Sandreas@sandberg.pp.seif GetOption('verbose'): 12279986Sandreas@sandberg.pp.se print "Reading SConsopts" 12289986Sandreas@sandberg.pp.sefor bdir in [ base_dir ] + extras_dir_list: 12299986Sandreas@sandberg.pp.se if not isdir(bdir): 12309986Sandreas@sandberg.pp.se print "Error: directory '%s' does not exist" % bdir 12319986Sandreas@sandberg.pp.se Exit(1) 12329986Sandreas@sandberg.pp.se for root, dirs, files in os.walk(bdir): 12335863Snate@binkert.org if 'SConsopts' in files: 12345863Snate@binkert.org if GetOption('verbose'): 12351869SN/A print "Reading", joinpath(root, 'SConsopts') 12361965SN/A SConscript(joinpath(root, 'SConsopts')) 12377739Sgblack@eecs.umich.edu 12381965SN/Aall_isa_list.sort() 12392761Sstever@eecs.umich.eduall_gpu_isa_list.sort() 12405863Snate@binkert.org 12411869SN/Asticky_vars.AddVariables( 124210196SCurtis.Dunham@arm.com EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 12431869SN/A EnumVariable('TARGET_GPU_ISA', 'Target GPU ISA', 'hsail', all_gpu_isa_list), 12448120Sgblack@eecs.umich.edu ListVariable('CPU_MODELS', 'CPU models', 12458120Sgblack@eecs.umich.edu sorted(n for n,m in CpuModel.dict.iteritems() if m.default), 12468120Sgblack@eecs.umich.edu sorted(CpuModel.dict.keys())), 12478120Sgblack@eecs.umich.edu BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 12488120Sgblack@eecs.umich.edu False), 12498120Sgblack@eecs.umich.edu BoolVariable('SS_COMPATIBLE_FP', 12508120Sgblack@eecs.umich.edu 'Make floating-point results compatible with SimpleScalar', 12518120Sgblack@eecs.umich.edu False), 12528120Sgblack@eecs.umich.edu BoolVariable('USE_SSE2', 12538120Sgblack@eecs.umich.edu 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 12548120Sgblack@eecs.umich.edu False), 12558120Sgblack@eecs.umich.edu BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), 1256 BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 1257 BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False), 1258 BoolVariable('USE_KVM', 'Enable hardware virtualized (KVM) CPU models', have_kvm), 1259 BoolVariable('BUILD_GPU', 'Build the compute-GPU model', False), 1260 EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None', 1261 all_protocols), 1262 EnumVariable('BACKTRACE_IMPL', 'Post-mortem dump implementation', 1263 backtrace_impls[-1], backtrace_impls) 1264 ) 1265 1266# These variables get exported to #defines in config/*.hh (see src/SConscript). 1267export_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 'TARGET_ISA', 'TARGET_GPU_ISA', 1268 'CP_ANNOTATE', 'USE_POSIX_CLOCK', 'USE_KVM', 'PROTOCOL', 1269 'HAVE_PROTOBUF', 'HAVE_PERF_ATTR_EXCLUDE_HOST'] 1270 1271################################################### 1272# 1273# Define a SCons builder for configuration flag headers. 1274# 1275################################################### 1276 1277# This function generates a config header file that #defines the 1278# variable symbol to the current variable setting (0 or 1). The source 1279# operands are the name of the variable and a Value node containing the 1280# value of the variable. 1281def build_config_file(target, source, env): 1282 (variable, value) = [s.get_contents() for s in source] 1283 f = file(str(target[0]), 'w') 1284 print >> f, '#define', variable, value 1285 f.close() 1286 return None 1287 1288# Combine the two functions into a scons Action object. 1289config_action = MakeAction(build_config_file, Transform("CONFIG H", 2)) 1290 1291# The emitter munges the source & target node lists to reflect what 1292# we're really doing. 1293def config_emitter(target, source, env): 1294 # extract variable name from Builder arg 1295 variable = str(target[0]) 1296 # True target is config header file 1297 target = joinpath('config', variable.lower() + '.hh') 1298 val = env[variable] 1299 if isinstance(val, bool): 1300 # Force value to 0/1 1301 val = int(val) 1302 elif isinstance(val, str): 1303 val = '"' + val + '"' 1304 1305 # Sources are variable name & value (packaged in SCons Value nodes) 1306 return ([target], [Value(variable), Value(val)]) 1307 1308config_builder = Builder(emitter = config_emitter, action = config_action) 1309 1310main.Append(BUILDERS = { 'ConfigFile' : config_builder }) 1311 1312# libelf build is shared across all configs in the build root. 1313main.SConscript('ext/libelf/SConscript', 1314 variant_dir = joinpath(build_root, 'libelf')) 1315 1316# iostream3 build is shared across all configs in the build root. 1317main.SConscript('ext/iostream3/SConscript', 1318 variant_dir = joinpath(build_root, 'iostream3')) 1319 1320# libfdt build is shared across all configs in the build root. 1321main.SConscript('ext/libfdt/SConscript', 1322 variant_dir = joinpath(build_root, 'libfdt')) 1323 1324# fputils build is shared across all configs in the build root. 1325main.SConscript('ext/fputils/SConscript', 1326 variant_dir = joinpath(build_root, 'fputils')) 1327 1328# DRAMSim2 build is shared across all configs in the build root. 1329main.SConscript('ext/dramsim2/SConscript', 1330 variant_dir = joinpath(build_root, 'dramsim2')) 1331 1332# DRAMPower build is shared across all configs in the build root. 1333main.SConscript('ext/drampower/SConscript', 1334 variant_dir = joinpath(build_root, 'drampower')) 1335 1336# nomali build is shared across all configs in the build root. 1337main.SConscript('ext/nomali/SConscript', 1338 variant_dir = joinpath(build_root, 'nomali')) 1339 1340################################################### 1341# 1342# This function is used to set up a directory with switching headers 1343# 1344################################################### 1345 1346main['ALL_ISA_LIST'] = all_isa_list 1347main['ALL_GPU_ISA_LIST'] = all_gpu_isa_list 1348all_isa_deps = {} 1349def make_switching_dir(dname, switch_headers, env): 1350 # Generate the header. target[0] is the full path of the output 1351 # header to generate. 'source' is a dummy variable, since we get the 1352 # list of ISAs from env['ALL_ISA_LIST']. 1353 def gen_switch_hdr(target, source, env): 1354 fname = str(target[0]) 1355 isa = env['TARGET_ISA'].lower() 1356 try: 1357 f = open(fname, 'w') 1358 print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname)) 1359 f.close() 1360 except IOError: 1361 print "Failed to create %s" % fname 1362 raise 1363 1364 # Build SCons Action object. 'varlist' specifies env vars that this 1365 # action depends on; when env['ALL_ISA_LIST'] changes these actions 1366 # should get re-executed. 1367 switch_hdr_action = MakeAction(gen_switch_hdr, 1368 Transform("GENERATE"), varlist=['ALL_ISA_LIST']) 1369 1370 # Instantiate actions for each header 1371 for hdr in switch_headers: 1372 env.Command(hdr, [], switch_hdr_action) 1373 1374 isa_target = Dir('.').up().name.lower().replace('_', '-') 1375 env['PHONY_BASE'] = '#'+isa_target 1376 all_isa_deps[isa_target] = None 1377 1378Export('make_switching_dir') 1379 1380def make_gpu_switching_dir(dname, switch_headers, env): 1381 # Generate the header. target[0] is the full path of the output 1382 # header to generate. 'source' is a dummy variable, since we get the 1383 # list of ISAs from env['ALL_ISA_LIST']. 1384 def gen_switch_hdr(target, source, env): 1385 fname = str(target[0]) 1386 1387 isa = env['TARGET_GPU_ISA'].lower() 1388 1389 try: 1390 f = open(fname, 'w') 1391 print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname)) 1392 f.close() 1393 except IOError: 1394 print "Failed to create %s" % fname 1395 raise 1396 1397 # Build SCons Action object. 'varlist' specifies env vars that this 1398 # action depends on; when env['ALL_ISA_LIST'] changes these actions 1399 # should get re-executed. 1400 switch_hdr_action = MakeAction(gen_switch_hdr, 1401 Transform("GENERATE"), varlist=['ALL_ISA_GPU_LIST']) 1402 1403 # Instantiate actions for each header 1404 for hdr in switch_headers: 1405 env.Command(hdr, [], switch_hdr_action) 1406 1407Export('make_gpu_switching_dir') 1408 1409# all-isas -> all-deps -> all-environs -> all_targets 1410main.Alias('#all-isas', []) 1411main.Alias('#all-deps', '#all-isas') 1412 1413# Dummy target to ensure all environments are created before telling 1414# SCons what to actually make (the command line arguments). We attach 1415# them to the dependence graph after the environments are complete. 1416ORIG_BUILD_TARGETS = list(BUILD_TARGETS) # force a copy; gets closure to work. 1417def environsComplete(target, source, env): 1418 for t in ORIG_BUILD_TARGETS: 1419 main.Depends('#all-targets', t) 1420 1421# Each build/* switching_dir attaches its *-environs target to #all-environs. 1422main.Append(BUILDERS = {'CompleteEnvirons' : 1423 Builder(action=MakeAction(environsComplete, None))}) 1424main.CompleteEnvirons('#all-environs', []) 1425 1426def doNothing(**ignored): pass 1427main.Append(BUILDERS = {'Dummy': Builder(action=MakeAction(doNothing, None))}) 1428 1429# The final target to which all the original targets ultimately get attached. 1430main.Dummy('#all-targets', '#all-environs') 1431BUILD_TARGETS[:] = ['#all-targets'] 1432 1433################################################### 1434# 1435# Define build environments for selected configurations. 1436# 1437################################################### 1438 1439for variant_path in variant_paths: 1440 if not GetOption('silent'): 1441 print "Building in", variant_path 1442 1443 # Make a copy of the build-root environment to use for this config. 1444 env = main.Clone() 1445 env['BUILDDIR'] = variant_path 1446 1447 # variant_dir is the tail component of build path, and is used to 1448 # determine the build parameters (e.g., 'ALPHA_SE') 1449 (build_root, variant_dir) = splitpath(variant_path) 1450 1451 # Set env variables according to the build directory config. 1452 sticky_vars.files = [] 1453 # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 1454 # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 1455 # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 1456 current_vars_file = joinpath(build_root, 'variables', variant_dir) 1457 if isfile(current_vars_file): 1458 sticky_vars.files.append(current_vars_file) 1459 if not GetOption('silent'): 1460 print "Using saved variables file %s" % current_vars_file 1461 else: 1462 # Build dir-specific variables file doesn't exist. 1463 1464 # Make sure the directory is there so we can create it later 1465 opt_dir = dirname(current_vars_file) 1466 if not isdir(opt_dir): 1467 mkdir(opt_dir) 1468 1469 # Get default build variables from source tree. Variables are 1470 # normally determined by name of $VARIANT_DIR, but can be 1471 # overridden by '--default=' arg on command line. 1472 default = GetOption('default') 1473 opts_dir = joinpath(main.root.abspath, 'build_opts') 1474 if default: 1475 default_vars_files = [joinpath(build_root, 'variables', default), 1476 joinpath(opts_dir, default)] 1477 else: 1478 default_vars_files = [joinpath(opts_dir, variant_dir)] 1479 existing_files = filter(isfile, default_vars_files) 1480 if existing_files: 1481 default_vars_file = existing_files[0] 1482 sticky_vars.files.append(default_vars_file) 1483 print "Variables file %s not found,\n using defaults in %s" \ 1484 % (current_vars_file, default_vars_file) 1485 else: 1486 print "Error: cannot find variables file %s or " \ 1487 "default file(s) %s" \ 1488 % (current_vars_file, ' or '.join(default_vars_files)) 1489 Exit(1) 1490 1491 # Apply current variable settings to env 1492 sticky_vars.Update(env) 1493 1494 help_texts["local_vars"] += \ 1495 "Build variables for %s:\n" % variant_dir \ 1496 + sticky_vars.GenerateHelpText(env) 1497 1498 # Process variable settings. 1499 1500 if not have_fenv and env['USE_FENV']: 1501 print "Warning: <fenv.h> not available; " \ 1502 "forcing USE_FENV to False in", variant_dir + "." 1503 env['USE_FENV'] = False 1504 1505 if not env['USE_FENV']: 1506 print "Warning: No IEEE FP rounding mode control in", variant_dir + "." 1507 print " FP results may deviate slightly from other platforms." 1508 1509 if env['EFENCE']: 1510 env.Append(LIBS=['efence']) 1511 1512 if env['USE_KVM']: 1513 if not have_kvm: 1514 print "Warning: Can not enable KVM, host seems to lack KVM support" 1515 env['USE_KVM'] = False 1516 elif not is_isa_kvm_compatible(env['TARGET_ISA']): 1517 print "Info: KVM support disabled due to unsupported host and " \ 1518 "target ISA combination" 1519 env['USE_KVM'] = False 1520 1521 if env['BUILD_GPU']: 1522 env.Append(CPPDEFINES=['BUILD_GPU']) 1523 1524 # Warn about missing optional functionality 1525 if env['USE_KVM']: 1526 if not main['HAVE_PERF_ATTR_EXCLUDE_HOST']: 1527 print "Warning: perf_event headers lack support for the " \ 1528 "exclude_host attribute. KVM instruction counts will " \ 1529 "be inaccurate." 1530 1531 # Save sticky variable settings back to current variables file 1532 sticky_vars.Save(current_vars_file, env) 1533 1534 if env['USE_SSE2']: 1535 env.Append(CCFLAGS=['-msse2']) 1536 1537 # The src/SConscript file sets up the build rules in 'env' according 1538 # to the configured variables. It returns a list of environments, 1539 # one for each variant build (debug, opt, etc.) 1540 SConscript('src/SConscript', variant_dir = variant_path, exports = 'env') 1541 1542def pairwise(iterable): 1543 "s -> (s0,s1), (s1,s2), (s2, s3), ..." 1544 a, b = itertools.tee(iterable) 1545 b.next() 1546 return itertools.izip(a, b) 1547 1548# Create false dependencies so SCons will parse ISAs, establish 1549# dependencies, and setup the build Environments serially. Either 1550# SCons (likely) and/or our SConscripts (possibly) cannot cope with -j 1551# greater than 1. It appears to be standard race condition stuff; it 1552# doesn't always fail, but usually, and the behaviors are different. 1553# Every time I tried to remove this, builds would fail in some 1554# creative new way. So, don't do that. You'll want to, though, because 1555# tests/SConscript takes a long time to make its Environments. 1556for t1, t2 in pairwise(sorted(all_isa_deps.iterkeys())): 1557 main.Depends('#%s-deps' % t2, '#%s-deps' % t1) 1558 main.Depends('#%s-environs' % t2, '#%s-environs' % t1) 1559 1560# base help text 1561Help(''' 1562Usage: scons [scons options] [build variables] [target(s)] 1563 1564Extra scons options: 1565%(options)s 1566 1567Global build variables: 1568%(global_vars)s 1569 1570%(local_vars)s 1571''' % help_texts) 1572