SConstruct revision 10878
1955SN/A# -*- mode:python -*- 2955SN/A 310841Sandreas.sandberg@arm.com# Copyright (c) 2013, 2015 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") 17610458Sandreas.hansson@arm.comAddLocalOption('--with-cxx-config', dest='with_cxx_config', 17710458Sandreas.hansson@arm.com action='store_true', 17810458Sandreas.hansson@arm.com help="Build with support for C++-based configuration") 1798879Ssteve.reinhardt@amd.comAddLocalOption('--default', dest='default', type='string', action='store', 1808879Ssteve.reinhardt@amd.com help='Override which build_opts file to use for defaults') 1818879Ssteve.reinhardt@amd.comAddLocalOption('--ignore-style', dest='ignore_style', action='store_true', 1828879Ssteve.reinhardt@amd.com help='Disable style checking hooks') 1839227Sandreas.hansson@arm.comAddLocalOption('--no-lto', dest='no_lto', action='store_true', 1849227Sandreas.hansson@arm.com help='Disable Link-Time Optimization for fast') 1858879Ssteve.reinhardt@amd.comAddLocalOption('--update-ref', dest='update_ref', action='store_true', 1868879Ssteve.reinhardt@amd.com help='Update test reference outputs') 1878879Ssteve.reinhardt@amd.comAddLocalOption('--verbose', dest='verbose', action='store_true', 1888879Ssteve.reinhardt@amd.com help='Print full tool command lines') 18910453SAndrew.Bardsley@arm.comAddLocalOption('--without-python', dest='without_python', 19010453SAndrew.Bardsley@arm.com action='store_true', 19110453SAndrew.Bardsley@arm.com help='Build without Python configuration support') 19210456SCurtis.Dunham@arm.comAddLocalOption('--without-tcmalloc', dest='without_tcmalloc', 19310456SCurtis.Dunham@arm.com action='store_true', 19410456SCurtis.Dunham@arm.com help='Disable linking against tcmalloc') 19510457Sandreas.hansson@arm.comAddLocalOption('--with-ubsan', dest='with_ubsan', action='store_true', 19610457Sandreas.hansson@arm.com help='Build with Undefined Behavior Sanitizer if available') 1978120Sgblack@eecs.umich.edu 1988947Sandreas.hansson@arm.comtermcap = get_termcap(GetOption('use_colors')) 1997816Ssteve.reinhardt@amd.com 2005871Snate@binkert.org######################################################################## 2015871Snate@binkert.org# 2026121Snate@binkert.org# Set up the main build environment. 2035871Snate@binkert.org# 2045871Snate@binkert.org######################################################################## 2059926Sstan.czerniawski@arm.com 2069926Sstan.czerniawski@arm.com# export TERM so that clang reports errors in color 2079119Sandreas.hansson@arm.comuse_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 20810068Sandreas.hansson@arm.com 'LIBRARY_PATH', 'PATH', 'PKG_CONFIG_PATH', 'PROTOC', 20910068Sandreas.hansson@arm.com 'PYTHONPATH', 'RANLIB', 'SWIG', 'TERM' ]) 210955SN/A 2119416SAndreas.Sandberg@ARM.comuse_prefixes = [ 2129416SAndreas.Sandberg@ARM.com "M5", # M5 configuration (e.g., path to kernels) 2139416SAndreas.Sandberg@ARM.com "DISTCC_", # distcc (distributed compiler wrapper) configuration 2149416SAndreas.Sandberg@ARM.com "CCACHE_", # ccache (caching compiler wrapper) configuration 2159416SAndreas.Sandberg@ARM.com "CCC_", # clang static analyzer configuration 2169416SAndreas.Sandberg@ARM.com ] 2179416SAndreas.Sandberg@ARM.com 2185871Snate@binkert.orguse_env = {} 21910584Sandreas.hansson@arm.comfor key,val in sorted(os.environ.iteritems()): 2209416SAndreas.Sandberg@ARM.com if key in use_vars or \ 2219416SAndreas.Sandberg@ARM.com any([key.startswith(prefix) for prefix in use_prefixes]): 2225871Snate@binkert.org use_env[key] = val 223955SN/A 22410671Sandreas.hansson@arm.com# Tell scons to avoid implicit command dependencies to avoid issues 22510671Sandreas.hansson@arm.com# with the param wrappes being compiled twice (see 22610671Sandreas.hansson@arm.com# http://scons.tigris.org/issues/show_bug.cgi?id=2811) 22710671Sandreas.hansson@arm.commain = Environment(ENV=use_env, IMPLICIT_COMMAND_DEPENDENCIES=0) 2288881Smarc.orr@gmail.commain.Decider('MD5-timestamp') 2296121Snate@binkert.orgmain.root = Dir(".") # The current directory (where this file lives). 2306121Snate@binkert.orgmain.srcdir = Dir("src") # The source directory 2311533SN/A 2329239Sandreas.hansson@arm.commain_dict_keys = main.Dictionary().keys() 2339239Sandreas.hansson@arm.com 2349239Sandreas.hansson@arm.com# Check that we have a C/C++ compiler 2359239Sandreas.hansson@arm.comif not ('CC' in main_dict_keys and 'CXX' in main_dict_keys): 2369239Sandreas.hansson@arm.com print "No C++ compiler installed (package g++ on Ubuntu and RedHat)" 2379239Sandreas.hansson@arm.com Exit(1) 2389239Sandreas.hansson@arm.com 2399239Sandreas.hansson@arm.com# Check that swig is present 2409239Sandreas.hansson@arm.comif not 'SWIG' in main_dict_keys: 2419239Sandreas.hansson@arm.com print "swig is not installed (package swig on Ubuntu and RedHat)" 2429239Sandreas.hansson@arm.com Exit(1) 2439239Sandreas.hansson@arm.com 2446655Snate@binkert.org# add useful python code PYTHONPATH so it can be used by subprocesses 2456655Snate@binkert.org# as well 2466655Snate@binkert.orgmain.AppendENVPath('PYTHONPATH', extra_python_paths) 2476655Snate@binkert.org 2485871Snate@binkert.org######################################################################## 2495871Snate@binkert.org# 2505863Snate@binkert.org# Mercurial Stuff. 2515871Snate@binkert.org# 2528878Ssteve.reinhardt@amd.com# If the gem5 directory is a mercurial repository, we should do some 2535871Snate@binkert.org# extra things. 2545871Snate@binkert.org# 2555871Snate@binkert.org######################################################################## 2565863Snate@binkert.org 2576121Snate@binkert.orghgdir = main.root.Dir(".hg") 2585863Snate@binkert.org 2595871Snate@binkert.orgmercurial_style_message = """ 2608336Ssteve.reinhardt@amd.comYou're missing the gem5 style hook, which automatically checks your code 2618336Ssteve.reinhardt@amd.comagainst the gem5 style rules on hg commit and qrefresh commands. This 2628336Ssteve.reinhardt@amd.comscript will now install the hook in your .hg/hgrc file. 2638336Ssteve.reinhardt@amd.comPress enter to continue, or ctrl-c to abort: """ 2644678Snate@binkert.org 2658336Ssteve.reinhardt@amd.commercurial_style_hook = """ 2668336Ssteve.reinhardt@amd.com# The following lines were automatically added by gem5/SConstruct 2678336Ssteve.reinhardt@amd.com# to provide the gem5 style-checking hooks 2684678Snate@binkert.org[extensions] 2694678Snate@binkert.orgstyle = %s/util/style.py 2704678Snate@binkert.org 2714678Snate@binkert.org[hooks] 2727827Snate@binkert.orgpretxncommit.style = python:style.check_style 2737827Snate@binkert.orgpre-qrefresh.style = python:style.check_style 2748336Ssteve.reinhardt@amd.com# End of SConstruct additions 2754678Snate@binkert.org 2768336Ssteve.reinhardt@amd.com""" % (main.root.abspath) 2778336Ssteve.reinhardt@amd.com 2788336Ssteve.reinhardt@amd.commercurial_lib_not_found = """ 2798336Ssteve.reinhardt@amd.comMercurial libraries cannot be found, ignoring style hook. If 2808336Ssteve.reinhardt@amd.comyou are a gem5 developer, please fix this and run the style 2818336Ssteve.reinhardt@amd.comhook. It is important. 2825871Snate@binkert.org""" 2835871Snate@binkert.org 2848336Ssteve.reinhardt@amd.com# Check for style hook and prompt for installation if it's not there. 2858336Ssteve.reinhardt@amd.com# Skip this if --ignore-style was specified, there's no .hg dir to 2868336Ssteve.reinhardt@amd.com# install a hook in, or there's no interactive terminal to prompt. 2878336Ssteve.reinhardt@amd.comif not GetOption('ignore_style') and hgdir.exists() and sys.stdin.isatty(): 2888336Ssteve.reinhardt@amd.com style_hook = True 2895871Snate@binkert.org try: 2908336Ssteve.reinhardt@amd.com from mercurial import ui 2918336Ssteve.reinhardt@amd.com ui = ui.ui() 2928336Ssteve.reinhardt@amd.com ui.readconfig(hgdir.File('hgrc').abspath) 2938336Ssteve.reinhardt@amd.com style_hook = ui.config('hooks', 'pretxncommit.style', None) and \ 2948336Ssteve.reinhardt@amd.com ui.config('hooks', 'pre-qrefresh.style', None) 2954678Snate@binkert.org except ImportError: 2965871Snate@binkert.org print mercurial_lib_not_found 2974678Snate@binkert.org 2988336Ssteve.reinhardt@amd.com if not style_hook: 2998336Ssteve.reinhardt@amd.com print mercurial_style_message, 3008336Ssteve.reinhardt@amd.com # continue unless user does ctrl-c/ctrl-d etc. 3018336Ssteve.reinhardt@amd.com try: 3028336Ssteve.reinhardt@amd.com raw_input() 3038336Ssteve.reinhardt@amd.com except: 3048336Ssteve.reinhardt@amd.com print "Input exception, exiting scons.\n" 3058336Ssteve.reinhardt@amd.com sys.exit(1) 3068336Ssteve.reinhardt@amd.com hgrc_path = '%s/.hg/hgrc' % main.root.abspath 3078336Ssteve.reinhardt@amd.com print "Adding style hook to", hgrc_path, "\n" 3088336Ssteve.reinhardt@amd.com try: 3098336Ssteve.reinhardt@amd.com hgrc = open(hgrc_path, 'a') 3108336Ssteve.reinhardt@amd.com hgrc.write(mercurial_style_hook) 3118336Ssteve.reinhardt@amd.com hgrc.close() 3128336Ssteve.reinhardt@amd.com except: 3138336Ssteve.reinhardt@amd.com print "Error updating", hgrc_path 3148336Ssteve.reinhardt@amd.com sys.exit(1) 3155871Snate@binkert.org 3166121Snate@binkert.org 317955SN/A################################################### 318955SN/A# 3192632Sstever@eecs.umich.edu# Figure out which configurations to set up based on the path(s) of 3202632Sstever@eecs.umich.edu# the target(s). 321955SN/A# 322955SN/A################################################### 323955SN/A 324955SN/A# Find default configuration & binary. 3258878Ssteve.reinhardt@amd.comDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA/gem5.debug')) 326955SN/A 3272632Sstever@eecs.umich.edu# helper function: find last occurrence of element in list 3282632Sstever@eecs.umich.edudef rfind(l, elt, offs = -1): 3292632Sstever@eecs.umich.edu for i in range(len(l)+offs, 0, -1): 3302632Sstever@eecs.umich.edu if l[i] == elt: 3312632Sstever@eecs.umich.edu return i 3322632Sstever@eecs.umich.edu raise ValueError, "element not found" 3332632Sstever@eecs.umich.edu 3348268Ssteve.reinhardt@amd.com# Take a list of paths (or SCons Nodes) and return a list with all 3358268Ssteve.reinhardt@amd.com# paths made absolute and ~-expanded. Paths will be interpreted 3368268Ssteve.reinhardt@amd.com# relative to the launch directory unless a different root is provided 3378268Ssteve.reinhardt@amd.comdef makePathListAbsolute(path_list, root=GetLaunchDir()): 3388268Ssteve.reinhardt@amd.com return [abspath(joinpath(root, expanduser(str(p)))) 3398268Ssteve.reinhardt@amd.com for p in path_list] 3408268Ssteve.reinhardt@amd.com 3412632Sstever@eecs.umich.edu# Each target must have 'build' in the interior of the path; the 3422632Sstever@eecs.umich.edu# directory below this will determine the build parameters. For 3432632Sstever@eecs.umich.edu# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 3442632Sstever@eecs.umich.edu# recognize that ALPHA_SE specifies the configuration because it 3458268Ssteve.reinhardt@amd.com# follow 'build' in the build path. 3462632Sstever@eecs.umich.edu 3478268Ssteve.reinhardt@amd.com# The funky assignment to "[:]" is needed to replace the list contents 3488268Ssteve.reinhardt@amd.com# in place rather than reassign the symbol to a new list, which 3498268Ssteve.reinhardt@amd.com# doesn't work (obviously!). 3508268Ssteve.reinhardt@amd.comBUILD_TARGETS[:] = makePathListAbsolute(BUILD_TARGETS) 3513718Sstever@eecs.umich.edu 3522634Sstever@eecs.umich.edu# Generate a list of the unique build roots and configs that the 3532634Sstever@eecs.umich.edu# collected targets reference. 3545863Snate@binkert.orgvariant_paths = [] 3552638Sstever@eecs.umich.edubuild_root = None 3568268Ssteve.reinhardt@amd.comfor t in BUILD_TARGETS: 3572632Sstever@eecs.umich.edu path_dirs = t.split('/') 3582632Sstever@eecs.umich.edu try: 3592632Sstever@eecs.umich.edu build_top = rfind(path_dirs, 'build', -2) 3602632Sstever@eecs.umich.edu except: 3612632Sstever@eecs.umich.edu print "Error: no non-leaf 'build' dir found on target path", t 3621858SN/A Exit(1) 3633716Sstever@eecs.umich.edu this_build_root = joinpath('/',*path_dirs[:build_top+1]) 3642638Sstever@eecs.umich.edu if not build_root: 3652638Sstever@eecs.umich.edu build_root = this_build_root 3662638Sstever@eecs.umich.edu else: 3672638Sstever@eecs.umich.edu if this_build_root != build_root: 3682638Sstever@eecs.umich.edu print "Error: build targets not under same build root\n"\ 3692638Sstever@eecs.umich.edu " %s\n %s" % (build_root, this_build_root) 3702638Sstever@eecs.umich.edu Exit(1) 3715863Snate@binkert.org variant_path = joinpath('/',*path_dirs[:build_top+2]) 3725863Snate@binkert.org if variant_path not in variant_paths: 3735863Snate@binkert.org variant_paths.append(variant_path) 374955SN/A 3755341Sstever@gmail.com# Make sure build_root exists (might not if this is the first build there) 3765341Sstever@gmail.comif not isdir(build_root): 3775863Snate@binkert.org mkdir(build_root) 3787756SAli.Saidi@ARM.commain['BUILDROOT'] = build_root 3795341Sstever@gmail.com 3806121Snate@binkert.orgExport('main') 3814494Ssaidi@eecs.umich.edu 3826121Snate@binkert.orgmain.SConsignFile(joinpath(build_root, "sconsign")) 3831105SN/A 3842667Sstever@eecs.umich.edu# Default duplicate option is to use hard links, but this messes up 3852667Sstever@eecs.umich.edu# when you use emacs to edit a file in the target dir, as emacs moves 3862667Sstever@eecs.umich.edu# file to file~ then copies to file, breaking the link. Symbolic 3872667Sstever@eecs.umich.edu# (soft) links work better. 3886121Snate@binkert.orgmain.SetOption('duplicate', 'soft-copy') 3892667Sstever@eecs.umich.edu 3905341Sstever@gmail.com# 3915863Snate@binkert.org# Set up global sticky variables... these are common to an entire build 3925341Sstever@gmail.com# tree (not specific to a particular build like ALPHA_SE) 3935341Sstever@gmail.com# 3945341Sstever@gmail.com 3958120Sgblack@eecs.umich.eduglobal_vars_file = joinpath(build_root, 'variables.global') 3965341Sstever@gmail.com 3978120Sgblack@eecs.umich.eduglobal_vars = Variables(global_vars_file, args=ARGUMENTS) 3985341Sstever@gmail.com 3998120Sgblack@eecs.umich.eduglobal_vars.AddVariables( 4006121Snate@binkert.org ('CC', 'C compiler', environ.get('CC', main['CC'])), 4016121Snate@binkert.org ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 4028980Ssteve.reinhardt@amd.com ('SWIG', 'SWIG tool', environ.get('SWIG', main['SWIG'])), 4039396Sandreas.hansson@arm.com ('PROTOC', 'protoc tool', environ.get('PROTOC', 'protoc')), 4045397Ssaidi@eecs.umich.edu ('BATCH', 'Use batch pool for build and tests', False), 4055397Ssaidi@eecs.umich.edu ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 4067727SAli.Saidi@ARM.com ('M5_BUILD_CACHE', 'Cache built objects in this directory', False), 4078268Ssteve.reinhardt@amd.com ('EXTRAS', 'Add extra directories to the compilation', '') 4086168Snate@binkert.org ) 4095341Sstever@gmail.com 4108120Sgblack@eecs.umich.edu# Update main environment with values from ARGUMENTS & global_vars_file 4118120Sgblack@eecs.umich.eduglobal_vars.Update(main) 4128120Sgblack@eecs.umich.eduhelp_texts["global_vars"] += global_vars.GenerateHelpText(main) 4136814Sgblack@eecs.umich.edu 4145863Snate@binkert.org# Save sticky variable settings back to current variables file 4158120Sgblack@eecs.umich.eduglobal_vars.Save(global_vars_file, main) 4165341Sstever@gmail.com 4175863Snate@binkert.org# Parse EXTRAS variable to build list of all directories where we're 4188268Ssteve.reinhardt@amd.com# look for sources etc. This list is exported as extras_dir_list. 4196121Snate@binkert.orgbase_dir = main.srcdir.abspath 4206121Snate@binkert.orgif main['EXTRAS']: 4218268Ssteve.reinhardt@amd.com extras_dir_list = makePathListAbsolute(main['EXTRAS'].split(':')) 4225742Snate@binkert.orgelse: 4235742Snate@binkert.org extras_dir_list = [] 4245341Sstever@gmail.com 4255742Snate@binkert.orgExport('base_dir') 4265742Snate@binkert.orgExport('extras_dir_list') 4275341Sstever@gmail.com 4286017Snate@binkert.org# the ext directory should be on the #includes path 4296121Snate@binkert.orgmain.Append(CPPPATH=[Dir('ext')]) 4306017Snate@binkert.org 4317816Ssteve.reinhardt@amd.comdef strip_build_path(path, env): 4327756SAli.Saidi@ARM.com path = str(path) 4337756SAli.Saidi@ARM.com variant_base = env['BUILDROOT'] + os.path.sep 4347756SAli.Saidi@ARM.com if path.startswith(variant_base): 4357756SAli.Saidi@ARM.com path = path[len(variant_base):] 4367756SAli.Saidi@ARM.com elif path.startswith('build/'): 4377756SAli.Saidi@ARM.com path = path[6:] 4387756SAli.Saidi@ARM.com return path 4397756SAli.Saidi@ARM.com 4407816Ssteve.reinhardt@amd.com# Generate a string of the form: 4417816Ssteve.reinhardt@amd.com# common/path/prefix/src1, src2 -> tgt1, tgt2 4427816Ssteve.reinhardt@amd.com# to print while building. 4437816Ssteve.reinhardt@amd.comclass Transform(object): 4447816Ssteve.reinhardt@amd.com # all specific color settings should be here and nowhere else 4457816Ssteve.reinhardt@amd.com tool_color = termcap.Normal 4467816Ssteve.reinhardt@amd.com pfx_color = termcap.Yellow 4477816Ssteve.reinhardt@amd.com srcs_color = termcap.Yellow + termcap.Bold 4487816Ssteve.reinhardt@amd.com arrow_color = termcap.Blue + termcap.Bold 4497816Ssteve.reinhardt@amd.com tgts_color = termcap.Yellow + termcap.Bold 4507756SAli.Saidi@ARM.com 4517816Ssteve.reinhardt@amd.com def __init__(self, tool, max_sources=99): 4527816Ssteve.reinhardt@amd.com self.format = self.tool_color + (" [%8s] " % tool) \ 4537816Ssteve.reinhardt@amd.com + self.pfx_color + "%s" \ 4547816Ssteve.reinhardt@amd.com + self.srcs_color + "%s" \ 4557816Ssteve.reinhardt@amd.com + self.arrow_color + " -> " \ 4567816Ssteve.reinhardt@amd.com + self.tgts_color + "%s" \ 4577816Ssteve.reinhardt@amd.com + termcap.Normal 4587816Ssteve.reinhardt@amd.com self.max_sources = max_sources 4597816Ssteve.reinhardt@amd.com 4607816Ssteve.reinhardt@amd.com def __call__(self, target, source, env, for_signature=None): 4617816Ssteve.reinhardt@amd.com # truncate source list according to max_sources param 4627816Ssteve.reinhardt@amd.com source = source[0:self.max_sources] 4637816Ssteve.reinhardt@amd.com def strip(f): 4647816Ssteve.reinhardt@amd.com return strip_build_path(str(f), env) 4657816Ssteve.reinhardt@amd.com if len(source) > 0: 4667816Ssteve.reinhardt@amd.com srcs = map(strip, source) 4677816Ssteve.reinhardt@amd.com else: 4687816Ssteve.reinhardt@amd.com srcs = [''] 4697816Ssteve.reinhardt@amd.com tgts = map(strip, target) 4707816Ssteve.reinhardt@amd.com # surprisingly, os.path.commonprefix is a dumb char-by-char string 4717816Ssteve.reinhardt@amd.com # operation that has nothing to do with paths. 4727816Ssteve.reinhardt@amd.com com_pfx = os.path.commonprefix(srcs + tgts) 4737816Ssteve.reinhardt@amd.com com_pfx_len = len(com_pfx) 4747816Ssteve.reinhardt@amd.com if com_pfx: 4757816Ssteve.reinhardt@amd.com # do some cleanup and sanity checking on common prefix 4767816Ssteve.reinhardt@amd.com if com_pfx[-1] == ".": 4777816Ssteve.reinhardt@amd.com # prefix matches all but file extension: ok 4787816Ssteve.reinhardt@amd.com # back up one to change 'foo.cc -> o' to 'foo.cc -> .o' 4797816Ssteve.reinhardt@amd.com com_pfx = com_pfx[0:-1] 4807816Ssteve.reinhardt@amd.com elif com_pfx[-1] == "/": 4817816Ssteve.reinhardt@amd.com # common prefix is directory path: OK 4827816Ssteve.reinhardt@amd.com pass 4837816Ssteve.reinhardt@amd.com else: 4847816Ssteve.reinhardt@amd.com src0_len = len(srcs[0]) 4857816Ssteve.reinhardt@amd.com tgt0_len = len(tgts[0]) 4867816Ssteve.reinhardt@amd.com if src0_len == com_pfx_len: 4877816Ssteve.reinhardt@amd.com # source is a substring of target, OK 4887816Ssteve.reinhardt@amd.com pass 4897816Ssteve.reinhardt@amd.com elif tgt0_len == com_pfx_len: 4907816Ssteve.reinhardt@amd.com # target is a substring of source, need to back up to 4917816Ssteve.reinhardt@amd.com # avoid empty string on RHS of arrow 4927816Ssteve.reinhardt@amd.com sep_idx = com_pfx.rfind(".") 4937816Ssteve.reinhardt@amd.com if sep_idx != -1: 4947816Ssteve.reinhardt@amd.com com_pfx = com_pfx[0:sep_idx] 4957816Ssteve.reinhardt@amd.com else: 4967816Ssteve.reinhardt@amd.com com_pfx = '' 4977816Ssteve.reinhardt@amd.com elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".": 4987816Ssteve.reinhardt@amd.com # still splitting at file extension: ok 4997816Ssteve.reinhardt@amd.com pass 5007816Ssteve.reinhardt@amd.com else: 5017816Ssteve.reinhardt@amd.com # probably a fluke; ignore it 5027816Ssteve.reinhardt@amd.com com_pfx = '' 5037816Ssteve.reinhardt@amd.com # recalculate length in case com_pfx was modified 5047816Ssteve.reinhardt@amd.com com_pfx_len = len(com_pfx) 5057816Ssteve.reinhardt@amd.com def fmt(files): 5067816Ssteve.reinhardt@amd.com f = map(lambda s: s[com_pfx_len:], files) 5077816Ssteve.reinhardt@amd.com return ', '.join(f) 5087816Ssteve.reinhardt@amd.com return self.format % (com_pfx, fmt(srcs), fmt(tgts)) 5097816Ssteve.reinhardt@amd.com 5107816Ssteve.reinhardt@amd.comExport('Transform') 5117816Ssteve.reinhardt@amd.com 5128947Sandreas.hansson@arm.com# enable the regression script to use the termcap 5138947Sandreas.hansson@arm.commain['TERMCAP'] = termcap 5147756SAli.Saidi@ARM.com 5158120Sgblack@eecs.umich.eduif GetOption('verbose'): 5167756SAli.Saidi@ARM.com def MakeAction(action, string, *args, **kwargs): 5177756SAli.Saidi@ARM.com return Action(action, *args, **kwargs) 5187756SAli.Saidi@ARM.comelse: 5197756SAli.Saidi@ARM.com MakeAction = Action 5207816Ssteve.reinhardt@amd.com main['CCCOMSTR'] = Transform("CC") 5217816Ssteve.reinhardt@amd.com main['CXXCOMSTR'] = Transform("CXX") 5227816Ssteve.reinhardt@amd.com main['ASCOMSTR'] = Transform("AS") 5237816Ssteve.reinhardt@amd.com main['SWIGCOMSTR'] = Transform("SWIG") 5247816Ssteve.reinhardt@amd.com main['ARCOMSTR'] = Transform("AR", 0) 5257816Ssteve.reinhardt@amd.com main['LINKCOMSTR'] = Transform("LINK", 0) 5267816Ssteve.reinhardt@amd.com main['RANLIBCOMSTR'] = Transform("RANLIB", 0) 5277816Ssteve.reinhardt@amd.com main['M4COMSTR'] = Transform("M4") 5287816Ssteve.reinhardt@amd.com main['SHCCCOMSTR'] = Transform("SHCC") 5297816Ssteve.reinhardt@amd.com main['SHCXXCOMSTR'] = Transform("SHCXX") 5307756SAli.Saidi@ARM.comExport('MakeAction') 5317756SAli.Saidi@ARM.com 5329227Sandreas.hansson@arm.com# Initialize the Link-Time Optimization (LTO) flags 5339227Sandreas.hansson@arm.commain['LTO_CCFLAGS'] = [] 5349227Sandreas.hansson@arm.commain['LTO_LDFLAGS'] = [] 5359227Sandreas.hansson@arm.com 5369590Sandreas@sandberg.pp.se# According to the readme, tcmalloc works best if the compiler doesn't 5379590Sandreas@sandberg.pp.se# assume that we're using the builtin malloc and friends. These flags 5389590Sandreas@sandberg.pp.se# are compiler-specific, so we need to set them after we detect which 5399590Sandreas@sandberg.pp.se# compiler we're using. 5409590Sandreas@sandberg.pp.semain['TCMALLOC_CCFLAGS'] = [] 5419590Sandreas@sandberg.pp.se 5426654Snate@binkert.orgCXX_version = readCommand([main['CXX'],'--version'], exception=False) 5436654Snate@binkert.orgCXX_V = readCommand([main['CXX'],'-V'], exception=False) 5445871Snate@binkert.org 5456121Snate@binkert.orgmain['GCC'] = CXX_version and CXX_version.find('g++') >= 0 5468946Sandreas.hansson@arm.commain['CLANG'] = CXX_version and CXX_version.find('clang') >= 0 5479419Sandreas.hansson@arm.comif main['GCC'] + main['CLANG'] > 1: 5483940Ssaidi@eecs.umich.edu print 'Error: How can we have two at the same time?' 5493918Ssaidi@eecs.umich.edu Exit(1) 5503918Ssaidi@eecs.umich.edu 5511858SN/A# Set up default C++ compiler flags 5529556Sandreas.hansson@arm.comif main['GCC'] or main['CLANG']: 5539556Sandreas.hansson@arm.com # As gcc and clang share many flags, do the common parts here 5549556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-pipe']) 5559556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-fno-strict-aliasing']) 5569556Sandreas.hansson@arm.com # Enable -Wall and then disable the few warnings that we 5579556Sandreas.hansson@arm.com # consistently violate 5589556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef']) 55910878Sandreas.hansson@arm.com # We always compile using C++11 56010878Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-std=c++11']) 5619556Sandreas.hansson@arm.com # Add selected sanity checks from -Wextra 5629556Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-Wmissing-field-initializers', 5639556Sandreas.hansson@arm.com '-Woverloaded-virtual']) 5649556Sandreas.hansson@arm.comelse: 5659556Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 5669556Sandreas.hansson@arm.com print "Don't know what compiler options to use for your compiler." 5679556Sandreas.hansson@arm.com print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 5689556Sandreas.hansson@arm.com print termcap.Yellow + ' version:' + termcap.Normal, 5699556Sandreas.hansson@arm.com if not CXX_version: 5709556Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 5719556Sandreas.hansson@arm.com termcap.Normal 5729556Sandreas.hansson@arm.com else: 5739556Sandreas.hansson@arm.com print CXX_version.replace('\n', '<nl>') 5749556Sandreas.hansson@arm.com print " If you're trying to use a compiler other than GCC" 5759556Sandreas.hansson@arm.com print " or clang, there appears to be something wrong with your" 5769556Sandreas.hansson@arm.com print " environment." 5779556Sandreas.hansson@arm.com print " " 5789556Sandreas.hansson@arm.com print " If you are trying to use a compiler other than those listed" 5799556Sandreas.hansson@arm.com print " above you will need to ease fix SConstruct and " 5809556Sandreas.hansson@arm.com print " src/SConscript to support that compiler." 5819556Sandreas.hansson@arm.com Exit(1) 5829556Sandreas.hansson@arm.com 5836121Snate@binkert.orgif main['GCC']: 58410878Sandreas.hansson@arm.com # Check for a supported version of gcc. >= 4.7 is chosen for its 58510238Sandreas.hansson@arm.com # level of c++11 support. See 58610878Sandreas.hansson@arm.com # http://gcc.gnu.org/projects/cxx0x.html for details. 5879420Sandreas.hansson@arm.com gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 58810878Sandreas.hansson@arm.com if compareVersions(gcc_version, "4.7") < 0: 58910878Sandreas.hansson@arm.com print 'Error: gcc version 4.7 or newer required.' 5909420Sandreas.hansson@arm.com print ' Installed version:', gcc_version 5919420Sandreas.hansson@arm.com Exit(1) 5929420Sandreas.hansson@arm.com 5939420Sandreas.hansson@arm.com main['GCC_VERSION'] = gcc_version 5949420Sandreas.hansson@arm.com 59510264Sandreas.hansson@arm.com # gcc from version 4.8 and above generates "rep; ret" instructions 59610264Sandreas.hansson@arm.com # to avoid performance penalties on certain AMD chips. Older 59710264Sandreas.hansson@arm.com # assemblers detect this as an error, "Error: expecting string 59810264Sandreas.hansson@arm.com # instruction after `rep'" 59910264Sandreas.hansson@arm.com if compareVersions(gcc_version, "4.8") > 0: 60010866Sandreas.hansson@arm.com as_version_raw = readCommand([main['AS'], '-v', '/dev/null'], 60110866Sandreas.hansson@arm.com exception=False).split() 60210264Sandreas.hansson@arm.com 60310866Sandreas.hansson@arm.com # version strings may contain extra distro-specific 60410866Sandreas.hansson@arm.com # qualifiers, so play it safe and keep only what comes before 60510866Sandreas.hansson@arm.com # the first hyphen 60610866Sandreas.hansson@arm.com as_version = as_version_raw[-1].split('-')[0] if as_version_raw \ 60710866Sandreas.hansson@arm.com else None 60810866Sandreas.hansson@arm.com 60910866Sandreas.hansson@arm.com if not as_version or compareVersions(as_version, "2.23") < 0: 61010264Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 61110264Sandreas.hansson@arm.com 'Warning: This combination of gcc and binutils have' + \ 61210264Sandreas.hansson@arm.com ' known incompatibilities.\n' + \ 61310264Sandreas.hansson@arm.com ' If you encounter build problems, please update ' + \ 61410264Sandreas.hansson@arm.com 'binutils to 2.23.' + \ 61510264Sandreas.hansson@arm.com termcap.Normal 61610264Sandreas.hansson@arm.com 61710457Sandreas.hansson@arm.com # Make sure we warn if the user has requested to compile with the 61810457Sandreas.hansson@arm.com # Undefined Benahvior Sanitizer and this version of gcc does not 61910457Sandreas.hansson@arm.com # support it. 62010457Sandreas.hansson@arm.com if GetOption('with_ubsan') and \ 62110457Sandreas.hansson@arm.com compareVersions(gcc_version, '4.9') < 0: 62210457Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 62310457Sandreas.hansson@arm.com 'Warning: UBSan is only supported using gcc 4.9 and later.' + \ 62410457Sandreas.hansson@arm.com termcap.Normal 62510457Sandreas.hansson@arm.com 62610238Sandreas.hansson@arm.com # Add the appropriate Link-Time Optimization (LTO) flags 62710238Sandreas.hansson@arm.com # unless LTO is explicitly turned off. Note that these flags 62810238Sandreas.hansson@arm.com # are only used by the fast target. 62910238Sandreas.hansson@arm.com if not GetOption('no_lto'): 63010238Sandreas.hansson@arm.com # Pass the LTO flag when compiling to produce GIMPLE 63110238Sandreas.hansson@arm.com # output, we merely create the flags here and only append 63210416Sandreas.hansson@arm.com # them later 63310238Sandreas.hansson@arm.com main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 6349227Sandreas.hansson@arm.com 63510238Sandreas.hansson@arm.com # Use the same amount of jobs for LTO as we are running 63610416Sandreas.hansson@arm.com # scons with 63710416Sandreas.hansson@arm.com main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 6389227Sandreas.hansson@arm.com 6399590Sandreas@sandberg.pp.se main.Append(TCMALLOC_CCFLAGS=['-fno-builtin-malloc', '-fno-builtin-calloc', 6409590Sandreas@sandberg.pp.se '-fno-builtin-realloc', '-fno-builtin-free']) 6419590Sandreas@sandberg.pp.se 6428737Skoansin.tan@gmail.comelif main['CLANG']: 64310878Sandreas.hansson@arm.com # Check for a supported version of clang, >= 3.1 is needed to 64410878Sandreas.hansson@arm.com # support similar features as gcc 4.7. See 6459420Sandreas.hansson@arm.com # http://clang.llvm.org/cxx_status.html for details 6468737Skoansin.tan@gmail.com clang_version_re = re.compile(".* version (\d+\.\d+)") 64710106SMitch.Hayenga@arm.com clang_version_match = clang_version_re.search(CXX_version) 6488737Skoansin.tan@gmail.com if (clang_version_match): 6498737Skoansin.tan@gmail.com clang_version = clang_version_match.groups()[0] 65010878Sandreas.hansson@arm.com if compareVersions(clang_version, "3.1") < 0: 65110878Sandreas.hansson@arm.com print 'Error: clang version 3.1 or newer required.' 6528737Skoansin.tan@gmail.com print ' Installed version:', clang_version 6538737Skoansin.tan@gmail.com Exit(1) 6548737Skoansin.tan@gmail.com else: 6558737Skoansin.tan@gmail.com print 'Error: Unable to determine clang version.' 6568737Skoansin.tan@gmail.com Exit(1) 6578737Skoansin.tan@gmail.com 6589556Sandreas.hansson@arm.com # clang has a few additional warnings that we disable, 6599556Sandreas.hansson@arm.com # tautological comparisons are allowed due to unsigned integers 6609556Sandreas.hansson@arm.com # being compared to constants that happen to be 0, and extraneous 6619556Sandreas.hansson@arm.com # parantheses are allowed due to Ruby's printing of the AST, 6629556Sandreas.hansson@arm.com # finally self assignments are allowed as the generated CPU code 6639556Sandreas.hansson@arm.com # is relying on this 6649556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-Wno-tautological-compare', 6659556Sandreas.hansson@arm.com '-Wno-parentheses', 66610278SAndreas.Sandberg@ARM.com '-Wno-self-assign', 66710278SAndreas.Sandberg@ARM.com # Some versions of libstdc++ (4.8?) seem to 66810278SAndreas.Sandberg@ARM.com # use struct hash and class hash 66910278SAndreas.Sandberg@ARM.com # interchangeably. 67010278SAndreas.Sandberg@ARM.com '-Wno-mismatched-tags', 67110278SAndreas.Sandberg@ARM.com ]) 6729556Sandreas.hansson@arm.com 6739590Sandreas@sandberg.pp.se main.Append(TCMALLOC_CCFLAGS=['-fno-builtin']) 6749590Sandreas@sandberg.pp.se 6759420Sandreas.hansson@arm.com # On Mac OS X/Darwin we need to also use libc++ (part of XCode) as 6769846Sandreas.hansson@arm.com # opposed to libstdc++, as the later is dated. 6779846Sandreas.hansson@arm.com if sys.platform == "darwin": 6789846Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-stdlib=libc++']) 6799846Sandreas.hansson@arm.com main.Append(LIBS=['c++']) 6808946Sandreas.hansson@arm.com 6813918Ssaidi@eecs.umich.eduelse: 6829068SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 6839068SAli.Saidi@ARM.com print "Don't know what compiler options to use for your compiler." 6849068SAli.Saidi@ARM.com print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 6859068SAli.Saidi@ARM.com print termcap.Yellow + ' version:' + termcap.Normal, 6869068SAli.Saidi@ARM.com if not CXX_version: 6879068SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 6889068SAli.Saidi@ARM.com termcap.Normal 6899068SAli.Saidi@ARM.com else: 6909068SAli.Saidi@ARM.com print CXX_version.replace('\n', '<nl>') 6919419Sandreas.hansson@arm.com print " If you're trying to use a compiler other than GCC" 6929068SAli.Saidi@ARM.com print " or clang, there appears to be something wrong with your" 6939068SAli.Saidi@ARM.com print " environment." 6949068SAli.Saidi@ARM.com print " " 6959068SAli.Saidi@ARM.com print " If you are trying to use a compiler other than those listed" 6969068SAli.Saidi@ARM.com print " above you will need to ease fix SConstruct and " 6979068SAli.Saidi@ARM.com print " src/SConscript to support that compiler." 6983918Ssaidi@eecs.umich.edu Exit(1) 6993918Ssaidi@eecs.umich.edu 7006157Snate@binkert.org# Set up common yacc/bison flags (needed for Ruby) 7016157Snate@binkert.orgmain['YACCFLAGS'] = '-d' 7026157Snate@binkert.orgmain['YACCHXXFILESUFFIX'] = '.hh' 7036157Snate@binkert.org 7045397Ssaidi@eecs.umich.edu# Do this after we save setting back, or else we'll tack on an 7055397Ssaidi@eecs.umich.edu# extra 'qdo' every time we run scons. 7066121Snate@binkert.orgif main['BATCH']: 7076121Snate@binkert.org main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 7086121Snate@binkert.org main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 7096121Snate@binkert.org main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 7106121Snate@binkert.org main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 7116121Snate@binkert.org main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 7125397Ssaidi@eecs.umich.edu 7131851SN/Aif sys.platform == 'cygwin': 7141851SN/A # cygwin has some header file issues... 7157739Sgblack@eecs.umich.edu main.Append(CCFLAGS=["-Wno-uninitialized"]) 716955SN/A 7179396Sandreas.hansson@arm.com# Check for the protobuf compiler 7189396Sandreas.hansson@arm.comprotoc_version = readCommand([main['PROTOC'], '--version'], 7199396Sandreas.hansson@arm.com exception='').split() 7209396Sandreas.hansson@arm.com 7219396Sandreas.hansson@arm.com# First two words should be "libprotoc x.y.z" 7229396Sandreas.hansson@arm.comif len(protoc_version) < 2 or protoc_version[0] != 'libprotoc': 7239396Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 7249396Sandreas.hansson@arm.com 'Warning: Protocol buffer compiler (protoc) not found.\n' + \ 7259396Sandreas.hansson@arm.com ' Please install protobuf-compiler for tracing support.' + \ 7269396Sandreas.hansson@arm.com termcap.Normal 7279396Sandreas.hansson@arm.com main['PROTOC'] = False 7289396Sandreas.hansson@arm.comelse: 7299396Sandreas.hansson@arm.com # Based on the availability of the compress stream wrappers, 7309396Sandreas.hansson@arm.com # require 2.1.0 7319396Sandreas.hansson@arm.com min_protoc_version = '2.1.0' 7329396Sandreas.hansson@arm.com if compareVersions(protoc_version[1], min_protoc_version) < 0: 7339477Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 7349477Sandreas.hansson@arm.com 'Warning: protoc version', min_protoc_version, \ 7359477Sandreas.hansson@arm.com 'or newer required.\n' + \ 7369477Sandreas.hansson@arm.com ' Installed version:', protoc_version[1], \ 7379477Sandreas.hansson@arm.com termcap.Normal 7389477Sandreas.hansson@arm.com main['PROTOC'] = False 7399477Sandreas.hansson@arm.com else: 7409477Sandreas.hansson@arm.com # Attempt to determine the appropriate include path and 7419477Sandreas.hansson@arm.com # library path using pkg-config, that means we also need to 7429477Sandreas.hansson@arm.com # check for pkg-config. Note that it is possible to use 7439477Sandreas.hansson@arm.com # protobuf without the involvement of pkg-config. Later on we 7449477Sandreas.hansson@arm.com # check go a library config check and at that point the test 7459477Sandreas.hansson@arm.com # will fail if libprotobuf cannot be found. 7469477Sandreas.hansson@arm.com if readCommand(['pkg-config', '--version'], exception=''): 7479477Sandreas.hansson@arm.com try: 7489477Sandreas.hansson@arm.com # Attempt to establish what linking flags to add for protobuf 7499477Sandreas.hansson@arm.com # using pkg-config 7509477Sandreas.hansson@arm.com main.ParseConfig('pkg-config --cflags --libs-only-L protobuf') 7519477Sandreas.hansson@arm.com except: 7529477Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 7539477Sandreas.hansson@arm.com 'Warning: pkg-config could not get protobuf flags.' + \ 7549477Sandreas.hansson@arm.com termcap.Normal 7559396Sandreas.hansson@arm.com 7563053Sstever@eecs.umich.edu# Check for SWIG 7576121Snate@binkert.orgif not main.has_key('SWIG'): 7583053Sstever@eecs.umich.edu print 'Error: SWIG utility not found.' 7593053Sstever@eecs.umich.edu print ' Please install (see http://www.swig.org) and retry.' 7603053Sstever@eecs.umich.edu Exit(1) 7613053Sstever@eecs.umich.edu 7623053Sstever@eecs.umich.edu# Check for appropriate SWIG version 7639072Sandreas.hansson@arm.comswig_version = readCommand([main['SWIG'], '-version'], exception='').split() 7643053Sstever@eecs.umich.edu# First 3 words should be "SWIG Version x.y.z" 7654742Sstever@eecs.umich.eduif len(swig_version) < 3 or \ 7664742Sstever@eecs.umich.edu swig_version[0] != 'SWIG' or swig_version[1] != 'Version': 7673053Sstever@eecs.umich.edu print 'Error determining SWIG version.' 7683053Sstever@eecs.umich.edu Exit(1) 7693053Sstever@eecs.umich.edu 77010181SCurtis.Dunham@arm.commin_swig_version = '2.0.4' 7716654Snate@binkert.orgif compareVersions(swig_version[2], min_swig_version) < 0: 7723053Sstever@eecs.umich.edu print 'Error: SWIG version', min_swig_version, 'or newer required.' 7733053Sstever@eecs.umich.edu print ' Installed version:', swig_version[2] 7743053Sstever@eecs.umich.edu Exit(1) 7753053Sstever@eecs.umich.edu 77610425Sandreas.hansson@arm.com# Check for known incompatibilities. The standard library shipped with 77710425Sandreas.hansson@arm.com# gcc >= 4.9 does not play well with swig versions prior to 3.0 77810425Sandreas.hansson@arm.comif main['GCC'] and compareVersions(gcc_version, '4.9') >= 0 and \ 77910425Sandreas.hansson@arm.com compareVersions(swig_version[2], '3.0') < 0: 78010425Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 78110425Sandreas.hansson@arm.com 'Warning: This combination of gcc and swig have' + \ 78210425Sandreas.hansson@arm.com ' known incompatibilities.\n' + \ 78310425Sandreas.hansson@arm.com ' If you encounter build problems, please update ' + \ 78410425Sandreas.hansson@arm.com 'swig to 3.0 or later.' + \ 78510425Sandreas.hansson@arm.com termcap.Normal 78610425Sandreas.hansson@arm.com 7872667Sstever@eecs.umich.edu# Set up SWIG flags & scanner 7884554Sbinkertn@umich.eduswig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS') 7896121Snate@binkert.orgmain.Append(SWIGFLAGS=swig_flags) 7902667Sstever@eecs.umich.edu 79110710Sandreas.hansson@arm.com# Check for 'timeout' from GNU coreutils. If present, regressions will 79210710Sandreas.hansson@arm.com# be run with a time limit. We require version 8.13 since we rely on 79310710Sandreas.hansson@arm.com# support for the '--foreground' option. 79410710Sandreas.hansson@arm.comtimeout_lines = readCommand(['timeout', '--version'], 79510710Sandreas.hansson@arm.com exception='').splitlines() 79610710Sandreas.hansson@arm.com# Get the first line and tokenize it 79710710Sandreas.hansson@arm.comtimeout_version = timeout_lines[0].split() if timeout_lines else [] 79810710Sandreas.hansson@arm.commain['TIMEOUT'] = timeout_version and \ 79910710Sandreas.hansson@arm.com compareVersions(timeout_version[-1], '8.13') >= 0 80010384SCurtis.Dunham@arm.com 8014554Sbinkertn@umich.edu# filter out all existing swig scanners, they mess up the dependency 8024554Sbinkertn@umich.edu# stuff for some reason 8034554Sbinkertn@umich.eduscanners = [] 8046121Snate@binkert.orgfor scanner in main['SCANNERS']: 8054554Sbinkertn@umich.edu skeys = scanner.skeys 8064554Sbinkertn@umich.edu if skeys == '.i': 8074554Sbinkertn@umich.edu continue 8084781Snate@binkert.org 8094554Sbinkertn@umich.edu if isinstance(skeys, (list, tuple)) and '.i' in skeys: 8104554Sbinkertn@umich.edu continue 8112667Sstever@eecs.umich.edu 8124554Sbinkertn@umich.edu scanners.append(scanner) 8134554Sbinkertn@umich.edu 8144554Sbinkertn@umich.edu# add the new swig scanner that we like better 8154554Sbinkertn@umich.edufrom SCons.Scanner import ClassicCPP as CPPScanner 8162667Sstever@eecs.umich.eduswig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")' 8174554Sbinkertn@umich.eduscanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re)) 8182667Sstever@eecs.umich.edu 8194554Sbinkertn@umich.edu# replace the scanners list that has what we want 8206121Snate@binkert.orgmain['SCANNERS'] = scanners 8212667Sstever@eecs.umich.edu 8225522Snate@binkert.org# Add a custom Check function to the Configure context so that we can 8235522Snate@binkert.org# figure out if the compiler adds leading underscores to global 8245522Snate@binkert.org# variables. This is needed for the autogenerated asm files that we 8255522Snate@binkert.org# use for embedding the python code. 8265522Snate@binkert.orgdef CheckLeading(context): 8275522Snate@binkert.org context.Message("Checking for leading underscore in global variables...") 8285522Snate@binkert.org # 1) Define a global variable called x from asm so the C compiler 8295522Snate@binkert.org # won't change the symbol at all. 8305522Snate@binkert.org # 2) Declare that variable. 8315522Snate@binkert.org # 3) Use the variable 8325522Snate@binkert.org # 8335522Snate@binkert.org # If the compiler prepends an underscore, this will successfully 8345522Snate@binkert.org # link because the external symbol 'x' will be called '_x' which 8355522Snate@binkert.org # was defined by the asm statement. If the compiler does not 8365522Snate@binkert.org # prepend an underscore, this will not successfully link because 8375522Snate@binkert.org # '_x' will have been defined by assembly, while the C portion of 8385522Snate@binkert.org # the code will be trying to use 'x' 8395522Snate@binkert.org ret = context.TryLink(''' 8405522Snate@binkert.org asm(".globl _x; _x: .byte 0"); 8415522Snate@binkert.org extern int x; 8425522Snate@binkert.org int main() { return x; } 8435522Snate@binkert.org ''', extension=".c") 8445522Snate@binkert.org context.env.Append(LEADING_UNDERSCORE=ret) 8455522Snate@binkert.org context.Result(ret) 8465522Snate@binkert.org return ret 8475522Snate@binkert.org 8489986Sandreas@sandberg.pp.se# Add a custom Check function to test for structure members. 8499986Sandreas@sandberg.pp.sedef CheckMember(context, include, decl, member, include_quotes="<>"): 8509986Sandreas@sandberg.pp.se context.Message("Checking for member %s in %s..." % 8519986Sandreas@sandberg.pp.se (member, decl)) 8529986Sandreas@sandberg.pp.se text = """ 8539986Sandreas@sandberg.pp.se#include %(header)s 8549986Sandreas@sandberg.pp.seint main(){ 8559986Sandreas@sandberg.pp.se %(decl)s test; 8569986Sandreas@sandberg.pp.se (void)test.%(member)s; 8579986Sandreas@sandberg.pp.se return 0; 8589986Sandreas@sandberg.pp.se}; 8599986Sandreas@sandberg.pp.se""" % { "header" : include_quotes[0] + include + include_quotes[1], 8609986Sandreas@sandberg.pp.se "decl" : decl, 8619986Sandreas@sandberg.pp.se "member" : member, 8629986Sandreas@sandberg.pp.se } 8639986Sandreas@sandberg.pp.se 8649986Sandreas@sandberg.pp.se ret = context.TryCompile(text, extension=".cc") 8659986Sandreas@sandberg.pp.se context.Result(ret) 8669986Sandreas@sandberg.pp.se return ret 8679986Sandreas@sandberg.pp.se 8682638Sstever@eecs.umich.edu# Platform-specific configuration. Note again that we assume that all 8692638Sstever@eecs.umich.edu# builds under a given build root run on the same host platform. 8706121Snate@binkert.orgconf = Configure(main, 8713716Sstever@eecs.umich.edu conf_dir = joinpath(build_root, '.scons_config'), 8725522Snate@binkert.org log_file = joinpath(build_root, 'scons_config.log'), 8739986Sandreas@sandberg.pp.se custom_tests = { 8749986Sandreas@sandberg.pp.se 'CheckLeading' : CheckLeading, 8759986Sandreas@sandberg.pp.se 'CheckMember' : CheckMember, 8769986Sandreas@sandberg.pp.se }) 8775522Snate@binkert.org 8785522Snate@binkert.org# Check for leading underscores. Don't really need to worry either 8795522Snate@binkert.org# way so don't need to check the return code. 8805522Snate@binkert.orgconf.CheckLeading() 8811858SN/A 8825227Ssaidi@eecs.umich.edu# Check if we should compile a 64 bit binary on Mac OS X/Darwin 8835227Ssaidi@eecs.umich.edutry: 8845227Ssaidi@eecs.umich.edu import platform 8855227Ssaidi@eecs.umich.edu uname = platform.uname() 8866654Snate@binkert.org if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0: 8876654Snate@binkert.org if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]): 8887769SAli.Saidi@ARM.com main.Append(CCFLAGS=['-arch', 'x86_64']) 8897769SAli.Saidi@ARM.com main.Append(CFLAGS=['-arch', 'x86_64']) 8907769SAli.Saidi@ARM.com main.Append(LINKFLAGS=['-arch', 'x86_64']) 8917769SAli.Saidi@ARM.com main.Append(ASFLAGS=['-arch', 'x86_64']) 8925227Ssaidi@eecs.umich.eduexcept: 8935227Ssaidi@eecs.umich.edu pass 8945227Ssaidi@eecs.umich.edu 8955204Sstever@gmail.com# Recent versions of scons substitute a "Null" object for Configure() 8965204Sstever@gmail.com# when configuration isn't necessary, e.g., if the "--help" option is 8975204Sstever@gmail.com# present. Unfortuantely this Null object always returns false, 8985204Sstever@gmail.com# breaking all our configuration checks. We replace it with our own 8995204Sstever@gmail.com# more optimistic null object that returns True instead. 9005204Sstever@gmail.comif not conf: 9015204Sstever@gmail.com def NullCheck(*args, **kwargs): 9025204Sstever@gmail.com return True 9035204Sstever@gmail.com 9045204Sstever@gmail.com class NullConf: 9055204Sstever@gmail.com def __init__(self, env): 9065204Sstever@gmail.com self.env = env 9075204Sstever@gmail.com def Finish(self): 9085204Sstever@gmail.com return self.env 9095204Sstever@gmail.com def __getattr__(self, mname): 9105204Sstever@gmail.com return NullCheck 9115204Sstever@gmail.com 9126121Snate@binkert.org conf = NullConf(main) 9135204Sstever@gmail.com 9147727SAli.Saidi@ARM.com# Cache build files in the supplied directory. 9157727SAli.Saidi@ARM.comif main['M5_BUILD_CACHE']: 9167727SAli.Saidi@ARM.com print 'Using build cache located at', main['M5_BUILD_CACHE'] 9177727SAli.Saidi@ARM.com CacheDir(main['M5_BUILD_CACHE']) 9187727SAli.Saidi@ARM.com 91910453SAndrew.Bardsley@arm.comif not GetOption('without_python'): 92010453SAndrew.Bardsley@arm.com # Find Python include and library directories for embedding the 92110453SAndrew.Bardsley@arm.com # interpreter. We rely on python-config to resolve the appropriate 92210453SAndrew.Bardsley@arm.com # includes and linker flags. ParseConfig does not seem to understand 92310453SAndrew.Bardsley@arm.com # the more exotic linker flags such as -Xlinker and -export-dynamic so 92410453SAndrew.Bardsley@arm.com # we add them explicitly below. If you want to link in an alternate 92510453SAndrew.Bardsley@arm.com # version of python, see above for instructions on how to invoke 92610453SAndrew.Bardsley@arm.com # scons with the appropriate PATH set. 92710453SAndrew.Bardsley@arm.com # 92810453SAndrew.Bardsley@arm.com # First we check if python2-config exists, else we use python-config 92910453SAndrew.Bardsley@arm.com python_config = readCommand(['which', 'python2-config'], 93010160Sandreas.hansson@arm.com exception='').strip() 93110453SAndrew.Bardsley@arm.com if not os.path.exists(python_config): 93210453SAndrew.Bardsley@arm.com python_config = readCommand(['which', 'python-config'], 93310453SAndrew.Bardsley@arm.com exception='').strip() 93410453SAndrew.Bardsley@arm.com py_includes = readCommand([python_config, '--includes'], 93510453SAndrew.Bardsley@arm.com exception='').split() 93610453SAndrew.Bardsley@arm.com # Strip the -I from the include folders before adding them to the 93710453SAndrew.Bardsley@arm.com # CPPPATH 93810453SAndrew.Bardsley@arm.com main.Append(CPPPATH=map(lambda inc: inc[2:], py_includes)) 9399812Sandreas.hansson@arm.com 94010453SAndrew.Bardsley@arm.com # Read the linker flags and split them into libraries and other link 94110453SAndrew.Bardsley@arm.com # flags. The libraries are added later through the call the CheckLib. 94210453SAndrew.Bardsley@arm.com py_ld_flags = readCommand([python_config, '--ldflags'], 94310453SAndrew.Bardsley@arm.com exception='').split() 94410453SAndrew.Bardsley@arm.com py_libs = [] 94510453SAndrew.Bardsley@arm.com for lib in py_ld_flags: 94610453SAndrew.Bardsley@arm.com if not lib.startswith('-l'): 94710453SAndrew.Bardsley@arm.com main.Append(LINKFLAGS=[lib]) 94810453SAndrew.Bardsley@arm.com else: 94910453SAndrew.Bardsley@arm.com lib = lib[2:] 95010453SAndrew.Bardsley@arm.com if lib not in py_libs: 95110453SAndrew.Bardsley@arm.com py_libs.append(lib) 9527727SAli.Saidi@ARM.com 95310453SAndrew.Bardsley@arm.com # verify that this stuff works 95410453SAndrew.Bardsley@arm.com if not conf.CheckHeader('Python.h', '<>'): 95510453SAndrew.Bardsley@arm.com print "Error: can't find Python.h header in", py_includes 95610453SAndrew.Bardsley@arm.com print "Install Python headers (package python-dev on Ubuntu and RedHat)" 95710453SAndrew.Bardsley@arm.com Exit(1) 9583118Sstever@eecs.umich.edu 95910453SAndrew.Bardsley@arm.com for lib in py_libs: 96010453SAndrew.Bardsley@arm.com if not conf.CheckLib(lib): 96110453SAndrew.Bardsley@arm.com print "Error: can't find library %s required by python" % lib 96210453SAndrew.Bardsley@arm.com Exit(1) 9633118Sstever@eecs.umich.edu 9643483Ssaidi@eecs.umich.edu# On Solaris you need to use libsocket for socket ops 9653494Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 9663494Ssaidi@eecs.umich.edu if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 9673483Ssaidi@eecs.umich.edu print "Can't find library with socket calls (e.g. accept())" 9683483Ssaidi@eecs.umich.edu Exit(1) 9693483Ssaidi@eecs.umich.edu 9703053Sstever@eecs.umich.edu# Check for zlib. If the check passes, libz will be automatically 9713053Sstever@eecs.umich.edu# added to the LIBS environment variable. 9723918Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 9733053Sstever@eecs.umich.edu print 'Error: did not find needed zlib compression library '\ 9743053Sstever@eecs.umich.edu 'and/or zlib.h header file.' 9753053Sstever@eecs.umich.edu print ' Please install zlib and try again.' 9763053Sstever@eecs.umich.edu Exit(1) 9773053Sstever@eecs.umich.edu 9789396Sandreas.hansson@arm.com# If we have the protobuf compiler, also make sure we have the 9799396Sandreas.hansson@arm.com# development libraries. If the check passes, libprotobuf will be 9809396Sandreas.hansson@arm.com# automatically added to the LIBS environment variable. After 9819396Sandreas.hansson@arm.com# this, we can use the HAVE_PROTOBUF flag to determine if we have 9829396Sandreas.hansson@arm.com# got both protoc and libprotobuf available. 9839396Sandreas.hansson@arm.commain['HAVE_PROTOBUF'] = main['PROTOC'] and \ 9849396Sandreas.hansson@arm.com conf.CheckLibWithHeader('protobuf', 'google/protobuf/message.h', 9859396Sandreas.hansson@arm.com 'C++', 'GOOGLE_PROTOBUF_VERIFY_VERSION;') 9869396Sandreas.hansson@arm.com 9879477Sandreas.hansson@arm.com# If we have the compiler but not the library, print another warning. 9889396Sandreas.hansson@arm.comif main['PROTOC'] and not main['HAVE_PROTOBUF']: 9899477Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 9909477Sandreas.hansson@arm.com 'Warning: did not find protocol buffer library and/or headers.\n' + \ 9919477Sandreas.hansson@arm.com ' Please install libprotobuf-dev for tracing support.' + \ 9929477Sandreas.hansson@arm.com termcap.Normal 9939396Sandreas.hansson@arm.com 9947840Snate@binkert.org# Check for librt. 9957865Sgblack@eecs.umich.eduhave_posix_clock = \ 9967865Sgblack@eecs.umich.edu conf.CheckLibWithHeader(None, 'time.h', 'C', 9977865Sgblack@eecs.umich.edu 'clock_nanosleep(0,0,NULL,NULL);') or \ 9987865Sgblack@eecs.umich.edu conf.CheckLibWithHeader('rt', 'time.h', 'C', 9997865Sgblack@eecs.umich.edu 'clock_nanosleep(0,0,NULL,NULL);') 10007840Snate@binkert.org 10019900Sandreas@sandberg.pp.sehave_posix_timers = \ 10029900Sandreas@sandberg.pp.se conf.CheckLibWithHeader([None, 'rt'], [ 'time.h', 'signal.h' ], 'C', 10039900Sandreas@sandberg.pp.se 'timer_create(CLOCK_MONOTONIC, NULL, NULL);') 10049900Sandreas@sandberg.pp.se 100510456SCurtis.Dunham@arm.comif not GetOption('without_tcmalloc'): 100610456SCurtis.Dunham@arm.com if conf.CheckLib('tcmalloc'): 100710456SCurtis.Dunham@arm.com main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 100810456SCurtis.Dunham@arm.com elif conf.CheckLib('tcmalloc_minimal'): 100910456SCurtis.Dunham@arm.com main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 101010456SCurtis.Dunham@arm.com else: 101110456SCurtis.Dunham@arm.com print termcap.Yellow + termcap.Bold + \ 101210456SCurtis.Dunham@arm.com "You can get a 12% performance improvement by "\ 101310456SCurtis.Dunham@arm.com "installing tcmalloc (libgoogle-perftools-dev package "\ 101410456SCurtis.Dunham@arm.com "on Ubuntu or RedHat)." + termcap.Normal 10159045SAli.Saidi@ARM.com 10167840Snate@binkert.orgif not have_posix_clock: 10177840Snate@binkert.org print "Can't find library for POSIX clocks." 10187840Snate@binkert.org 10191858SN/A# Check for <fenv.h> (C99 FP environment control) 10201858SN/Ahave_fenv = conf.CheckHeader('fenv.h', '<>') 10211858SN/Aif not have_fenv: 10221858SN/A print "Warning: Header file <fenv.h> not found." 10231858SN/A print " This host has no IEEE FP rounding mode control." 10241858SN/A 10259903Sandreas.hansson@arm.com# Check if we should enable KVM-based hardware virtualization. The API 10269903Sandreas.hansson@arm.com# we rely on exists since version 2.6.36 of the kernel, but somehow 10279903Sandreas.hansson@arm.com# the KVM_API_VERSION does not reflect the change. We test for one of 10289903Sandreas.hansson@arm.com# the types as a fall back. 102910841Sandreas.sandberg@arm.comhave_kvm = conf.CheckHeader('linux/kvm.h', '<>') 10309651SAndreas.Sandberg@ARM.comif not have_kvm: 10319903Sandreas.hansson@arm.com print "Info: Compatible header file <linux/kvm.h> not found, " \ 10329651SAndreas.Sandberg@ARM.com "disabling KVM support." 10339651SAndreas.Sandberg@ARM.com 103410841Sandreas.sandberg@arm.com# x86 needs support for xsave. We test for the structure here since we 103510841Sandreas.sandberg@arm.com# won't be able to run new tests by the time we know which ISA we're 103610841Sandreas.sandberg@arm.com# targeting. 103710841Sandreas.sandberg@arm.comhave_kvm_xsave = conf.CheckTypeSize('struct kvm_xsave', 103810841Sandreas.sandberg@arm.com '#include <linux/kvm.h>') != 0 103910841Sandreas.sandberg@arm.com 10409651SAndreas.Sandberg@ARM.com# Check if the requested target ISA is compatible with the host 10419651SAndreas.Sandberg@ARM.comdef is_isa_kvm_compatible(isa): 10429651SAndreas.Sandberg@ARM.com try: 10439651SAndreas.Sandberg@ARM.com import platform 10449651SAndreas.Sandberg@ARM.com host_isa = platform.machine() 10459651SAndreas.Sandberg@ARM.com except: 10469651SAndreas.Sandberg@ARM.com print "Warning: Failed to determine host ISA." 10479651SAndreas.Sandberg@ARM.com return False 10489651SAndreas.Sandberg@ARM.com 104910841Sandreas.sandberg@arm.com if not have_posix_timers: 105010841Sandreas.sandberg@arm.com print "Warning: Can not enable KVM, host seems to lack support " \ 105110841Sandreas.sandberg@arm.com "for POSIX timers" 105210841Sandreas.sandberg@arm.com return False 105310841Sandreas.sandberg@arm.com 105410841Sandreas.sandberg@arm.com if isa == "arm": 105510860Sandreas.sandberg@arm.com return host_isa in ( "armv7l", "aarch64" ) 105610841Sandreas.sandberg@arm.com elif isa == "x86": 105710841Sandreas.sandberg@arm.com if host_isa != "x86_64": 105810841Sandreas.sandberg@arm.com return False 105910841Sandreas.sandberg@arm.com 106010841Sandreas.sandberg@arm.com if not have_kvm_xsave: 106110841Sandreas.sandberg@arm.com print "KVM on x86 requires xsave support in kernel headers." 106210841Sandreas.sandberg@arm.com return False 106310841Sandreas.sandberg@arm.com 106410841Sandreas.sandberg@arm.com return True 106510841Sandreas.sandberg@arm.com else: 106610841Sandreas.sandberg@arm.com return False 10679651SAndreas.Sandberg@ARM.com 10689651SAndreas.Sandberg@ARM.com 10699986Sandreas@sandberg.pp.se# Check if the exclude_host attribute is available. We want this to 10709986Sandreas@sandberg.pp.se# get accurate instruction counts in KVM. 10719986Sandreas@sandberg.pp.semain['HAVE_PERF_ATTR_EXCLUDE_HOST'] = conf.CheckMember( 10729986Sandreas@sandberg.pp.se 'linux/perf_event.h', 'struct perf_event_attr', 'exclude_host') 10739986Sandreas@sandberg.pp.se 10749986Sandreas@sandberg.pp.se 10755863Snate@binkert.org###################################################################### 10765863Snate@binkert.org# 10775863Snate@binkert.org# Finish the configuration 10785863Snate@binkert.org# 10796121Snate@binkert.orgmain = conf.Finish() 10801858SN/A 10815863Snate@binkert.org###################################################################### 10825863Snate@binkert.org# 10835863Snate@binkert.org# Collect all non-global variables 10845863Snate@binkert.org# 10855863Snate@binkert.org 10862139SN/A# Define the universe of supported ISAs 10874202Sbinkertn@umich.eduall_isa_list = [ ] 10884202Sbinkertn@umich.eduExport('all_isa_list') 10892139SN/A 10906994Snate@binkert.orgclass CpuModel(object): 10916994Snate@binkert.org '''The CpuModel class encapsulates everything the ISA parser needs to 10926994Snate@binkert.org know about a particular CPU model.''' 10936994Snate@binkert.org 10946994Snate@binkert.org # Dict of available CPU model objects. Accessible as CpuModel.dict. 10956994Snate@binkert.org dict = {} 10966994Snate@binkert.org 10976994Snate@binkert.org # Constructor. Automatically adds models to CpuModel.dict. 109810319SAndreas.Sandberg@ARM.com def __init__(self, name, default=False): 10996994Snate@binkert.org self.name = name # name of model 11006994Snate@binkert.org 11016994Snate@binkert.org # This cpu is enabled by default 11026994Snate@binkert.org self.default = default 11036994Snate@binkert.org 11046994Snate@binkert.org # Add self to dict 11056994Snate@binkert.org if name in CpuModel.dict: 11066994Snate@binkert.org raise AttributeError, "CpuModel '%s' already registered" % name 11076994Snate@binkert.org CpuModel.dict[name] = self 11086994Snate@binkert.org 11096994Snate@binkert.orgExport('CpuModel') 11102155SN/A 11115863Snate@binkert.org# Sticky variables get saved in the variables file so they persist from 11121869SN/A# one invocation to the next (unless overridden, in which case the new 11131869SN/A# value becomes sticky). 11145863Snate@binkert.orgsticky_vars = Variables(args=ARGUMENTS) 11155863Snate@binkert.orgExport('sticky_vars') 11164202Sbinkertn@umich.edu 11176108Snate@binkert.org# Sticky variables that should be exported 11186108Snate@binkert.orgexport_vars = [] 11196108Snate@binkert.orgExport('export_vars') 11206108Snate@binkert.org 11219219Spower.jg@gmail.com# For Ruby 11229219Spower.jg@gmail.comall_protocols = [] 11239219Spower.jg@gmail.comExport('all_protocols') 11249219Spower.jg@gmail.comprotocol_dirs = [] 11259219Spower.jg@gmail.comExport('protocol_dirs') 11269219Spower.jg@gmail.comslicc_includes = [] 11279219Spower.jg@gmail.comExport('slicc_includes') 11289219Spower.jg@gmail.com 11294202Sbinkertn@umich.edu# Walk the tree and execute all SConsopts scripts that wil add to the 11305863Snate@binkert.org# above variables 113110135SCurtis.Dunham@arm.comif GetOption('verbose'): 11328474Sgblack@eecs.umich.edu print "Reading SConsopts" 11335742Snate@binkert.orgfor bdir in [ base_dir ] + extras_dir_list: 11348268Ssteve.reinhardt@amd.com if not isdir(bdir): 11358268Ssteve.reinhardt@amd.com print "Error: directory '%s' does not exist" % bdir 11368268Ssteve.reinhardt@amd.com Exit(1) 11375742Snate@binkert.org for root, dirs, files in os.walk(bdir): 11385341Sstever@gmail.com if 'SConsopts' in files: 11398474Sgblack@eecs.umich.edu if GetOption('verbose'): 11408474Sgblack@eecs.umich.edu print "Reading", joinpath(root, 'SConsopts') 11415342Sstever@gmail.com SConscript(joinpath(root, 'SConsopts')) 11424202Sbinkertn@umich.edu 11434202Sbinkertn@umich.eduall_isa_list.sort() 11444202Sbinkertn@umich.edu 11455863Snate@binkert.orgsticky_vars.AddVariables( 11465863Snate@binkert.org EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 11476994Snate@binkert.org ListVariable('CPU_MODELS', 'CPU models', 11486994Snate@binkert.org sorted(n for n,m in CpuModel.dict.iteritems() if m.default), 114910319SAndreas.Sandberg@ARM.com sorted(CpuModel.dict.keys())), 11505863Snate@binkert.org BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 11515863Snate@binkert.org False), 11525863Snate@binkert.org BoolVariable('SS_COMPATIBLE_FP', 11535863Snate@binkert.org 'Make floating-point results compatible with SimpleScalar', 11545863Snate@binkert.org False), 11555863Snate@binkert.org BoolVariable('USE_SSE2', 11565863Snate@binkert.org 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 11575863Snate@binkert.org False), 11587840Snate@binkert.org BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), 11595863Snate@binkert.org BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 11605952Ssaidi@eecs.umich.edu BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False), 11619651SAndreas.Sandberg@ARM.com BoolVariable('USE_KVM', 'Enable hardware virtualized (KVM) CPU models', have_kvm), 11629219Spower.jg@gmail.com EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None', 11639219Spower.jg@gmail.com all_protocols), 11641869SN/A ) 11651858SN/A 11665863Snate@binkert.org# These variables get exported to #defines in config/*.hh (see src/SConscript). 11679420Sandreas.hansson@arm.comexport_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 'TARGET_ISA', 'CP_ANNOTATE', 116810607Sgabeblack@google.com 'USE_POSIX_CLOCK', 'USE_KVM', 'PROTOCOL', 'HAVE_PROTOBUF', 11699986Sandreas@sandberg.pp.se 'HAVE_PERF_ATTR_EXCLUDE_HOST'] 11701858SN/A 1171955SN/A################################################### 1172955SN/A# 11731869SN/A# Define a SCons builder for configuration flag headers. 11741869SN/A# 11751869SN/A################################################### 11761869SN/A 11771869SN/A# This function generates a config header file that #defines the 11785863Snate@binkert.org# variable symbol to the current variable setting (0 or 1). The source 11795863Snate@binkert.org# operands are the name of the variable and a Value node containing the 11805863Snate@binkert.org# value of the variable. 11811869SN/Adef build_config_file(target, source, env): 11825863Snate@binkert.org (variable, value) = [s.get_contents() for s in source] 11831869SN/A f = file(str(target[0]), 'w') 11845863Snate@binkert.org print >> f, '#define', variable, value 11851869SN/A f.close() 11861869SN/A return None 11871869SN/A 11881869SN/A# Combine the two functions into a scons Action object. 11898483Sgblack@eecs.umich.educonfig_action = MakeAction(build_config_file, Transform("CONFIG H", 2)) 11901869SN/A 11911869SN/A# The emitter munges the source & target node lists to reflect what 11921869SN/A# we're really doing. 11931869SN/Adef config_emitter(target, source, env): 11945863Snate@binkert.org # extract variable name from Builder arg 11955863Snate@binkert.org variable = str(target[0]) 11961869SN/A # True target is config header file 11975863Snate@binkert.org target = joinpath('config', variable.lower() + '.hh') 11985863Snate@binkert.org val = env[variable] 11993356Sbinkertn@umich.edu if isinstance(val, bool): 12003356Sbinkertn@umich.edu # Force value to 0/1 12013356Sbinkertn@umich.edu val = int(val) 12023356Sbinkertn@umich.edu elif isinstance(val, str): 12033356Sbinkertn@umich.edu val = '"' + val + '"' 12044781Snate@binkert.org 12055863Snate@binkert.org # Sources are variable name & value (packaged in SCons Value nodes) 12065863Snate@binkert.org return ([target], [Value(variable), Value(val)]) 12071869SN/A 12081869SN/Aconfig_builder = Builder(emitter = config_emitter, action = config_action) 12091869SN/A 12106121Snate@binkert.orgmain.Append(BUILDERS = { 'ConfigFile' : config_builder }) 12111869SN/A 12122638Sstever@eecs.umich.edu# libelf build is shared across all configs in the build root. 12136121Snate@binkert.orgmain.SConscript('ext/libelf/SConscript', 12146121Snate@binkert.org variant_dir = joinpath(build_root, 'libelf')) 12152638Sstever@eecs.umich.edu 12165749Scws3k@cs.virginia.edu# gzstream build is shared across all configs in the build root. 12176121Snate@binkert.orgmain.SConscript('ext/gzstream/SConscript', 12186121Snate@binkert.org variant_dir = joinpath(build_root, 'gzstream')) 12195749Scws3k@cs.virginia.edu 12209537Satgutier@umich.edu# libfdt build is shared across all configs in the build root. 12219537Satgutier@umich.edumain.SConscript('ext/libfdt/SConscript', 12229537Satgutier@umich.edu variant_dir = joinpath(build_root, 'libfdt')) 12239537Satgutier@umich.edu 12249888Sandreas@sandberg.pp.se# fputils build is shared across all configs in the build root. 12259888Sandreas@sandberg.pp.semain.SConscript('ext/fputils/SConscript', 12269888Sandreas@sandberg.pp.se variant_dir = joinpath(build_root, 'fputils')) 12279888Sandreas@sandberg.pp.se 122810066Sandreas.hansson@arm.com# DRAMSim2 build is shared across all configs in the build root. 122910066Sandreas.hansson@arm.commain.SConscript('ext/dramsim2/SConscript', 123010066Sandreas.hansson@arm.com variant_dir = joinpath(build_root, 'dramsim2')) 123110066Sandreas.hansson@arm.com 123210428Sandreas.hansson@arm.com# DRAMPower build is shared across all configs in the build root. 123310428Sandreas.hansson@arm.commain.SConscript('ext/drampower/SConscript', 123410428Sandreas.hansson@arm.com variant_dir = joinpath(build_root, 'drampower')) 123510428Sandreas.hansson@arm.com 12361869SN/A################################################### 12371869SN/A# 12383546Sgblack@eecs.umich.edu# This function is used to set up a directory with switching headers 12393546Sgblack@eecs.umich.edu# 12403546Sgblack@eecs.umich.edu################################################### 12413546Sgblack@eecs.umich.edu 12426121Snate@binkert.orgmain['ALL_ISA_LIST'] = all_isa_list 124310196SCurtis.Dunham@arm.comall_isa_deps = {} 12445863Snate@binkert.orgdef make_switching_dir(dname, switch_headers, env): 12453546Sgblack@eecs.umich.edu # Generate the header. target[0] is the full path of the output 12463546Sgblack@eecs.umich.edu # header to generate. 'source' is a dummy variable, since we get the 12473546Sgblack@eecs.umich.edu # list of ISAs from env['ALL_ISA_LIST']. 12483546Sgblack@eecs.umich.edu def gen_switch_hdr(target, source, env): 12494781Snate@binkert.org fname = str(target[0]) 12506658Snate@binkert.org isa = env['TARGET_ISA'].lower() 125110196SCurtis.Dunham@arm.com try: 125210196SCurtis.Dunham@arm.com f = open(fname, 'w') 125310196SCurtis.Dunham@arm.com print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname)) 125410196SCurtis.Dunham@arm.com f.close() 125510196SCurtis.Dunham@arm.com except IOError: 125610196SCurtis.Dunham@arm.com print "Failed to create %s" % fname 125710196SCurtis.Dunham@arm.com raise 12583546Sgblack@eecs.umich.edu 12593546Sgblack@eecs.umich.edu # Build SCons Action object. 'varlist' specifies env vars that this 12603546Sgblack@eecs.umich.edu # action depends on; when env['ALL_ISA_LIST'] changes these actions 12613546Sgblack@eecs.umich.edu # should get re-executed. 12627756SAli.Saidi@ARM.com switch_hdr_action = MakeAction(gen_switch_hdr, 12637816Ssteve.reinhardt@amd.com Transform("GENERATE"), varlist=['ALL_ISA_LIST']) 12643546Sgblack@eecs.umich.edu 12653546Sgblack@eecs.umich.edu # Instantiate actions for each header 12663546Sgblack@eecs.umich.edu for hdr in switch_headers: 12673546Sgblack@eecs.umich.edu env.Command(hdr, [], switch_hdr_action) 126810196SCurtis.Dunham@arm.com 126910196SCurtis.Dunham@arm.com isa_target = Dir('.').up().name.lower().replace('_', '-') 127010196SCurtis.Dunham@arm.com env['PHONY_BASE'] = '#'+isa_target 127110196SCurtis.Dunham@arm.com all_isa_deps[isa_target] = None 127210196SCurtis.Dunham@arm.com 12734202Sbinkertn@umich.eduExport('make_switching_dir') 12743546Sgblack@eecs.umich.edu 127510196SCurtis.Dunham@arm.com# all-isas -> all-deps -> all-environs -> all_targets 127610196SCurtis.Dunham@arm.commain.Alias('#all-isas', []) 127710196SCurtis.Dunham@arm.commain.Alias('#all-deps', '#all-isas') 127810196SCurtis.Dunham@arm.com 127910196SCurtis.Dunham@arm.com# Dummy target to ensure all environments are created before telling 128010196SCurtis.Dunham@arm.com# SCons what to actually make (the command line arguments). We attach 128110196SCurtis.Dunham@arm.com# them to the dependence graph after the environments are complete. 128210196SCurtis.Dunham@arm.comORIG_BUILD_TARGETS = list(BUILD_TARGETS) # force a copy; gets closure to work. 128310196SCurtis.Dunham@arm.comdef environsComplete(target, source, env): 128410196SCurtis.Dunham@arm.com for t in ORIG_BUILD_TARGETS: 128510196SCurtis.Dunham@arm.com main.Depends('#all-targets', t) 128610196SCurtis.Dunham@arm.com 128710196SCurtis.Dunham@arm.com# Each build/* switching_dir attaches its *-environs target to #all-environs. 128810196SCurtis.Dunham@arm.commain.Append(BUILDERS = {'CompleteEnvirons' : 128910196SCurtis.Dunham@arm.com Builder(action=MakeAction(environsComplete, None))}) 129010196SCurtis.Dunham@arm.commain.CompleteEnvirons('#all-environs', []) 129110196SCurtis.Dunham@arm.com 129210196SCurtis.Dunham@arm.comdef doNothing(**ignored): pass 129310196SCurtis.Dunham@arm.commain.Append(BUILDERS = {'Dummy': Builder(action=MakeAction(doNothing, None))}) 129410196SCurtis.Dunham@arm.com 129510196SCurtis.Dunham@arm.com# The final target to which all the original targets ultimately get attached. 129610196SCurtis.Dunham@arm.commain.Dummy('#all-targets', '#all-environs') 129710196SCurtis.Dunham@arm.comBUILD_TARGETS[:] = ['#all-targets'] 129810196SCurtis.Dunham@arm.com 12993546Sgblack@eecs.umich.edu################################################### 13003546Sgblack@eecs.umich.edu# 1301955SN/A# Define build environments for selected configurations. 1302955SN/A# 1303955SN/A################################################### 1304955SN/A 13055863Snate@binkert.orgfor variant_path in variant_paths: 130610135SCurtis.Dunham@arm.com if not GetOption('silent'): 130710135SCurtis.Dunham@arm.com print "Building in", variant_path 13085343Sstever@gmail.com 13095343Sstever@gmail.com # Make a copy of the build-root environment to use for this config. 13106121Snate@binkert.org env = main.Clone() 13115863Snate@binkert.org env['BUILDDIR'] = variant_path 13124773Snate@binkert.org 13135863Snate@binkert.org # variant_dir is the tail component of build path, and is used to 13142632Sstever@eecs.umich.edu # determine the build parameters (e.g., 'ALPHA_SE') 13155863Snate@binkert.org (build_root, variant_dir) = splitpath(variant_path) 13162023SN/A 13175863Snate@binkert.org # Set env variables according to the build directory config. 13185863Snate@binkert.org sticky_vars.files = [] 13195863Snate@binkert.org # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 13205863Snate@binkert.org # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 13215863Snate@binkert.org # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 13225863Snate@binkert.org current_vars_file = joinpath(build_root, 'variables', variant_dir) 13235863Snate@binkert.org if isfile(current_vars_file): 13245863Snate@binkert.org sticky_vars.files.append(current_vars_file) 132510135SCurtis.Dunham@arm.com if not GetOption('silent'): 132610135SCurtis.Dunham@arm.com print "Using saved variables file %s" % current_vars_file 13272632Sstever@eecs.umich.edu else: 13285863Snate@binkert.org # Build dir-specific variables file doesn't exist. 13292023SN/A 13302632Sstever@eecs.umich.edu # Make sure the directory is there so we can create it later 13315863Snate@binkert.org opt_dir = dirname(current_vars_file) 13325342Sstever@gmail.com if not isdir(opt_dir): 13335863Snate@binkert.org mkdir(opt_dir) 13342632Sstever@eecs.umich.edu 13355863Snate@binkert.org # Get default build variables from source tree. Variables are 13365863Snate@binkert.org # normally determined by name of $VARIANT_DIR, but can be 13378267Ssteve.reinhardt@amd.com # overridden by '--default=' arg on command line. 13388120Sgblack@eecs.umich.edu default = GetOption('default') 13398267Ssteve.reinhardt@amd.com opts_dir = joinpath(main.root.abspath, 'build_opts') 13408267Ssteve.reinhardt@amd.com if default: 13418267Ssteve.reinhardt@amd.com default_vars_files = [joinpath(build_root, 'variables', default), 13428267Ssteve.reinhardt@amd.com joinpath(opts_dir, default)] 13438267Ssteve.reinhardt@amd.com else: 13448267Ssteve.reinhardt@amd.com default_vars_files = [joinpath(opts_dir, variant_dir)] 13458267Ssteve.reinhardt@amd.com existing_files = filter(isfile, default_vars_files) 13468267Ssteve.reinhardt@amd.com if existing_files: 13478267Ssteve.reinhardt@amd.com default_vars_file = existing_files[0] 13485863Snate@binkert.org sticky_vars.files.append(default_vars_file) 13495863Snate@binkert.org print "Variables file %s not found,\n using defaults in %s" \ 13505863Snate@binkert.org % (current_vars_file, default_vars_file) 13512632Sstever@eecs.umich.edu else: 13528267Ssteve.reinhardt@amd.com print "Error: cannot find variables file %s or " \ 13538267Ssteve.reinhardt@amd.com "default file(s) %s" \ 13548267Ssteve.reinhardt@amd.com % (current_vars_file, ' or '.join(default_vars_files)) 13552632Sstever@eecs.umich.edu Exit(1) 13561888SN/A 13575863Snate@binkert.org # Apply current variable settings to env 13585863Snate@binkert.org sticky_vars.Update(env) 13591858SN/A 13608120Sgblack@eecs.umich.edu help_texts["local_vars"] += \ 13618120Sgblack@eecs.umich.edu "Build variables for %s:\n" % variant_dir \ 13627756SAli.Saidi@ARM.com + sticky_vars.GenerateHelpText(env) 13632598SN/A 13645863Snate@binkert.org # Process variable settings. 13651858SN/A 13661858SN/A if not have_fenv and env['USE_FENV']: 13671858SN/A print "Warning: <fenv.h> not available; " \ 13685863Snate@binkert.org "forcing USE_FENV to False in", variant_dir + "." 13691858SN/A env['USE_FENV'] = False 13701858SN/A 13711858SN/A if not env['USE_FENV']: 13725863Snate@binkert.org print "Warning: No IEEE FP rounding mode control in", variant_dir + "." 13731871SN/A print " FP results may deviate slightly from other platforms." 13741858SN/A 13751858SN/A if env['EFENCE']: 13761858SN/A env.Append(LIBS=['efence']) 13771858SN/A 13789651SAndreas.Sandberg@ARM.com if env['USE_KVM']: 13799651SAndreas.Sandberg@ARM.com if not have_kvm: 13809651SAndreas.Sandberg@ARM.com print "Warning: Can not enable KVM, host seems to lack KVM support" 13819651SAndreas.Sandberg@ARM.com env['USE_KVM'] = False 13829651SAndreas.Sandberg@ARM.com elif not is_isa_kvm_compatible(env['TARGET_ISA']): 13839651SAndreas.Sandberg@ARM.com print "Info: KVM support disabled due to unsupported host and " \ 13849651SAndreas.Sandberg@ARM.com "target ISA combination" 13859651SAndreas.Sandberg@ARM.com env['USE_KVM'] = False 13869651SAndreas.Sandberg@ARM.com 13879986Sandreas@sandberg.pp.se # Warn about missing optional functionality 13889986Sandreas@sandberg.pp.se if env['USE_KVM']: 13899986Sandreas@sandberg.pp.se if not main['HAVE_PERF_ATTR_EXCLUDE_HOST']: 13909986Sandreas@sandberg.pp.se print "Warning: perf_event headers lack support for the " \ 13919986Sandreas@sandberg.pp.se "exclude_host attribute. KVM instruction counts will " \ 13929986Sandreas@sandberg.pp.se "be inaccurate." 13939986Sandreas@sandberg.pp.se 13945863Snate@binkert.org # Save sticky variable settings back to current variables file 13955863Snate@binkert.org sticky_vars.Save(current_vars_file, env) 13961869SN/A 13971965SN/A if env['USE_SSE2']: 13987739Sgblack@eecs.umich.edu env.Append(CCFLAGS=['-msse2']) 13991965SN/A 14002761Sstever@eecs.umich.edu # The src/SConscript file sets up the build rules in 'env' according 14015863Snate@binkert.org # to the configured variables. It returns a list of environments, 14021869SN/A # one for each variant build (debug, opt, etc.) 140310196SCurtis.Dunham@arm.com SConscript('src/SConscript', variant_dir = variant_path, exports = 'env') 14041869SN/A 140510196SCurtis.Dunham@arm.comdef pairwise(iterable): 140610196SCurtis.Dunham@arm.com "s -> (s0,s1), (s1,s2), (s2, s3), ..." 140710196SCurtis.Dunham@arm.com a, b = itertools.tee(iterable) 140810196SCurtis.Dunham@arm.com b.next() 140910196SCurtis.Dunham@arm.com return itertools.izip(a, b) 141010196SCurtis.Dunham@arm.com 141110196SCurtis.Dunham@arm.com# Create false dependencies so SCons will parse ISAs, establish 141210196SCurtis.Dunham@arm.com# dependencies, and setup the build Environments serially. Either 141310196SCurtis.Dunham@arm.com# SCons (likely) and/or our SConscripts (possibly) cannot cope with -j 141410196SCurtis.Dunham@arm.com# greater than 1. It appears to be standard race condition stuff; it 141510196SCurtis.Dunham@arm.com# doesn't always fail, but usually, and the behaviors are different. 141610196SCurtis.Dunham@arm.com# Every time I tried to remove this, builds would fail in some 141710196SCurtis.Dunham@arm.com# creative new way. So, don't do that. You'll want to, though, because 141810196SCurtis.Dunham@arm.com# tests/SConscript takes a long time to make its Environments. 141910196SCurtis.Dunham@arm.comfor t1, t2 in pairwise(sorted(all_isa_deps.iterkeys())): 142010196SCurtis.Dunham@arm.com main.Depends('#%s-deps' % t2, '#%s-deps' % t1) 142110196SCurtis.Dunham@arm.com main.Depends('#%s-environs' % t2, '#%s-environs' % t1) 1422955SN/A 14238120Sgblack@eecs.umich.edu# base help text 14248120Sgblack@eecs.umich.eduHelp(''' 14258120Sgblack@eecs.umich.eduUsage: scons [scons options] [build variables] [target(s)] 14268120Sgblack@eecs.umich.edu 14278120Sgblack@eecs.umich.eduExtra scons options: 14288120Sgblack@eecs.umich.edu%(options)s 14298120Sgblack@eecs.umich.edu 14308120Sgblack@eecs.umich.eduGlobal build variables: 14318120Sgblack@eecs.umich.edu%(global_vars)s 14328120Sgblack@eecs.umich.edu 14338120Sgblack@eecs.umich.edu%(local_vars)s 14348120Sgblack@eecs.umich.edu''' % help_texts) 1435