SConstruct revision 9846
1955SN/A# -*- mode:python -*- 2955SN/A 35871Snate@binkert.org# Copyright (c) 2013 ARM Limited 41762SN/A# All rights reserved. 5955SN/A# 6955SN/A# The license below extends only to copyright in the software and shall 7955SN/A# not be construed as granting a license to any other intellectual 8955SN/A# property including but not limited to intellectual property relating 9955SN/A# to a hardware implementation of the functionality of the software 10955SN/A# licensed hereunder. You may use the software subject to the license 11955SN/A# terms below provided that you ensure that this notice is replicated 12955SN/A# unmodified and in its entirety in all distributions of the software, 13955SN/A# modified or unmodified, in source code or in binary form. 14955SN/A# 15955SN/A# Copyright (c) 2011 Advanced Micro Devices, Inc. 16955SN/A# Copyright (c) 2009 The Hewlett-Packard Development Company 17955SN/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 292665Ssaidi@eecs.umich.edu# this software without specific prior written permission. 302665Ssaidi@eecs.umich.edu# 315863Snate@binkert.org# 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 372632Sstever@eecs.umich.edu# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 382632Sstever@eecs.umich.edu# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 392632Sstever@eecs.umich.edu# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 402632Sstever@eecs.umich.edu# (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. 422632Sstever@eecs.umich.edu# 432632Sstever@eecs.umich.edu# Authors: Steve Reinhardt 442761Sstever@eecs.umich.edu# Nathan Binkert 452632Sstever@eecs.umich.edu 462632Sstever@eecs.umich.edu################################################### 472632Sstever@eecs.umich.edu# 482761Sstever@eecs.umich.edu# SCons top-level build description (SConstruct) file. 492761Sstever@eecs.umich.edu# 502761Sstever@eecs.umich.edu# 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>' 522632Sstever@eecs.umich.edu# to build some other configuration (e.g., 'build/ALPHA/gem5.opt' for 532761Sstever@eecs.umich.edu# the optimized full-system version). 542761Sstever@eecs.umich.edu# 552761Sstever@eecs.umich.edu# You can build gem5 in a different directory as long as there is a 562761Sstever@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: 612632Sstever@eecs.umich.edu# 622632Sstever@eecs.umich.edu# The following two commands are equivalent. The '-u' option tells 632632Sstever@eecs.umich.edu# scons to search up the directory tree for this SConstruct file. 642632Sstever@eecs.umich.edu# % cd <path-to-src>/gem5 ; scons build/ALPHA/gem5.debug 65955SN/A# % cd <path-to-src>/gem5/build/ALPHA; scons -u gem5.debug 66955SN/A# 67955SN/A# The following two commands are equivalent and demonstrate building 685863Snate@binkert.org# in a directory outside of the source tree. The '-C' option tells 695863Snate@binkert.org# scons to chdir to the specified directory to find this SConstruct 705863Snate@binkert.org# file. 715863Snate@binkert.org# % cd <path-to-src>/gem5 ; scons /local/foo/build/ALPHA/gem5.debug 725863Snate@binkert.org# % cd /local/foo/build/ALPHA; scons -C <path-to-src>/gem5 gem5.debug 735863Snate@binkert.org# 745863Snate@binkert.org# You can use 'scons -H' to print scons options. If you're in this 755863Snate@binkert.org# 'gem5' directory (or use -u or -C to tell scons where to find this 765863Snate@binkert.org# file), you can use 'scons -h' to print all the gem5-specific build 775863Snate@binkert.org# options as well. 785863Snate@binkert.org# 795863Snate@binkert.org################################################### 805863Snate@binkert.org 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: 925863Snate@binkert.org http://gem5.org/Dependencies 935863Snate@binkert.org""" 945863Snate@binkert.org raise 955863Snate@binkert.org 965863Snate@binkert.org# We ensure the python version early because because python-config 975863Snate@binkert.org# requires python 2.5 985863Snate@binkert.orgtry: 99955SN/A EnsurePythonVersion(2, 5) 1005396Ssaidi@eecs.umich.eduexcept SystemExit, e: 1015863Snate@binkert.org print """ 1025863Snate@binkert.orgYou can use a non-default installation of the Python interpreter by 1034202Sbinkertn@umich.edurearranging your PATH so that scons finds the non-default 'python' and 1045863Snate@binkert.org'python-config' first. 1055863Snate@binkert.org 1065863Snate@binkert.orgFor more details, see: 1075863Snate@binkert.org http://gem5.org/wiki/index.php/Using_a_non-default_Python_installation 108955SN/A""" 1095273Sstever@gmail.com raise 1105871Snate@binkert.org 1115273Sstever@gmail.com# Global Python includes 1125871Snate@binkert.orgimport os 1135863Snate@binkert.orgimport re 1145863Snate@binkert.orgimport subprocess 1155863Snate@binkert.orgimport sys 1165871Snate@binkert.org 1175872Snate@binkert.orgfrom os import mkdir, environ 1185872Snate@binkert.orgfrom os.path import abspath, basename, dirname, expanduser, normpath 1195872Snate@binkert.orgfrom os.path import exists, isdir, isfile 1205871Snate@binkert.orgfrom os.path import join as joinpath, split as splitpath 1215871Snate@binkert.org 1225871Snate@binkert.org# SCons includes 1235871Snate@binkert.orgimport SCons 1245871Snate@binkert.orgimport SCons.Node 1255871Snate@binkert.org 1265871Snate@binkert.orgextra_python_paths = [ 1275871Snate@binkert.org Dir('src/python').srcnode().abspath, # gem5 includes 1285871Snate@binkert.org Dir('ext/ply').srcnode().abspath, # ply is used by several files 1295871Snate@binkert.org ] 1305871Snate@binkert.org 1315871Snate@binkert.orgsys.path[1:1] = extra_python_paths 1325871Snate@binkert.org 1335871Snate@binkert.orgfrom m5.util import compareVersions, readCommand 1345863Snate@binkert.orgfrom m5.util.terminal import get_termcap 1355227Ssaidi@eecs.umich.edu 1365396Ssaidi@eecs.umich.eduhelp_texts = { 1375396Ssaidi@eecs.umich.edu "options" : "", 1385396Ssaidi@eecs.umich.edu "global_vars" : "", 1395396Ssaidi@eecs.umich.edu "local_vars" : "" 1405396Ssaidi@eecs.umich.edu} 1415396Ssaidi@eecs.umich.edu 1425396Ssaidi@eecs.umich.eduExport("help_texts") 1435396Ssaidi@eecs.umich.edu 1445588Ssaidi@eecs.umich.edu 1455396Ssaidi@eecs.umich.edu# There's a bug in scons in that (1) by default, the help texts from 1465396Ssaidi@eecs.umich.edu# AddOption() are supposed to be displayed when you type 'scons -h' 1475396Ssaidi@eecs.umich.edu# and (2) you can override the help displayed by 'scons -h' using the 1485396Ssaidi@eecs.umich.edu# Help() function, but these two features are incompatible: once 1495396Ssaidi@eecs.umich.edu# you've overridden the help text using Help(), there's no way to get 1505396Ssaidi@eecs.umich.edu# at the help texts from AddOptions. See: 1515396Ssaidi@eecs.umich.edu# http://scons.tigris.org/issues/show_bug.cgi?id=2356 1525396Ssaidi@eecs.umich.edu# http://scons.tigris.org/issues/show_bug.cgi?id=2611 1535396Ssaidi@eecs.umich.edu# This hack lets us extract the help text from AddOptions and 1545396Ssaidi@eecs.umich.edu# re-inject it via Help(). Ideally someday this bug will be fixed and 1555396Ssaidi@eecs.umich.edu# we can just use AddOption directly. 1565396Ssaidi@eecs.umich.edudef AddLocalOption(*args, **kwargs): 1575396Ssaidi@eecs.umich.edu col_width = 30 1585396Ssaidi@eecs.umich.edu 1595871Snate@binkert.org help = " " + ", ".join(args) 1605871Snate@binkert.org if "help" in kwargs: 1615871Snate@binkert.org length = len(help) 1625871Snate@binkert.org if length >= col_width: 1635871Snate@binkert.org help += "\n" + " " * col_width 1646003Snate@binkert.org else: 1656003Snate@binkert.org help += " " * (col_width - length) 166955SN/A help += kwargs["help"] 1675871Snate@binkert.org help_texts["options"] += help + "\n" 1685871Snate@binkert.org 1695871Snate@binkert.org AddOption(*args, **kwargs) 1705871Snate@binkert.org 171955SN/AAddLocalOption('--colors', dest='use_colors', action='store_true', 1725871Snate@binkert.org help="Add color to abbreviated scons output") 1735871Snate@binkert.orgAddLocalOption('--no-colors', dest='use_colors', action='store_false', 1745871Snate@binkert.org help="Don't add color to abbreviated scons output") 1751533SN/AAddLocalOption('--default', dest='default', type='string', action='store', 1765871Snate@binkert.org help='Override which build_opts file to use for defaults') 1775871Snate@binkert.orgAddLocalOption('--ignore-style', dest='ignore_style', action='store_true', 1785863Snate@binkert.org help='Disable style checking hooks') 1795871Snate@binkert.orgAddLocalOption('--no-lto', dest='no_lto', action='store_true', 1805871Snate@binkert.org help='Disable Link-Time Optimization for fast') 1815871Snate@binkert.orgAddLocalOption('--update-ref', dest='update_ref', action='store_true', 1825871Snate@binkert.org help='Update test reference outputs') 1835871Snate@binkert.orgAddLocalOption('--verbose', dest='verbose', action='store_true', 1845863Snate@binkert.org help='Print full tool command lines') 1855871Snate@binkert.org 1865863Snate@binkert.orgtermcap = get_termcap(GetOption('use_colors')) 1875871Snate@binkert.org 1884678Snate@binkert.org######################################################################## 1894678Snate@binkert.org# 1904678Snate@binkert.org# Set up the main build environment. 1914678Snate@binkert.org# 1924678Snate@binkert.org######################################################################## 1934678Snate@binkert.orguse_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 1944678Snate@binkert.org 'LIBRARY_PATH', 'PATH', 'PKG_CONFIG_PATH', 'PYTHONPATH', 1954678Snate@binkert.org 'RANLIB', 'SWIG' ]) 1964678Snate@binkert.org 1974678Snate@binkert.orguse_prefixes = [ 1984678Snate@binkert.org "M5", # M5 configuration (e.g., path to kernels) 1994678Snate@binkert.org "DISTCC_", # distcc (distributed compiler wrapper) configuration 2005871Snate@binkert.org "CCACHE_", # ccache (caching compiler wrapper) configuration 2014678Snate@binkert.org "CCC_", # clang static analyzer configuration 2025871Snate@binkert.org ] 2035871Snate@binkert.org 2045871Snate@binkert.orguse_env = {} 2055871Snate@binkert.orgfor key,val in os.environ.iteritems(): 2065871Snate@binkert.org if key in use_vars or \ 2075871Snate@binkert.org any([key.startswith(prefix) for prefix in use_prefixes]): 2085871Snate@binkert.org use_env[key] = val 2095871Snate@binkert.org 2105871Snate@binkert.orgmain = Environment(ENV=use_env) 2115871Snate@binkert.orgmain.Decider('MD5-timestamp') 2125871Snate@binkert.orgmain.root = Dir(".") # The current directory (where this file lives). 2135871Snate@binkert.orgmain.srcdir = Dir("src") # The source directory 2145871Snate@binkert.org 2155990Ssaidi@eecs.umich.edumain_dict_keys = main.Dictionary().keys() 2165871Snate@binkert.org 2175871Snate@binkert.org# Check that we have a C/C++ compiler 2185871Snate@binkert.orgif not ('CC' in main_dict_keys and 'CXX' in main_dict_keys): 2194678Snate@binkert.org print "No C++ compiler installed (package g++ on Ubuntu and RedHat)" 2205871Snate@binkert.org Exit(1) 2215871Snate@binkert.org 2225871Snate@binkert.org# Check that swig is present 2235871Snate@binkert.orgif not 'SWIG' in main_dict_keys: 2245871Snate@binkert.org print "swig is not installed (package swig on Ubuntu and RedHat)" 2255871Snate@binkert.org Exit(1) 2265871Snate@binkert.org 2275871Snate@binkert.org# add useful python code PYTHONPATH so it can be used by subprocesses 2285871Snate@binkert.org# as well 2295871Snate@binkert.orgmain.AppendENVPath('PYTHONPATH', extra_python_paths) 2304678Snate@binkert.org 2315871Snate@binkert.org######################################################################## 2324678Snate@binkert.org# 2335871Snate@binkert.org# Mercurial Stuff. 2345871Snate@binkert.org# 2355871Snate@binkert.org# If the gem5 directory is a mercurial repository, we should do some 2365871Snate@binkert.org# extra things. 2375871Snate@binkert.org# 2385871Snate@binkert.org######################################################################## 2395871Snate@binkert.org 2405871Snate@binkert.orghgdir = main.root.Dir(".hg") 2415871Snate@binkert.org 2425990Ssaidi@eecs.umich.edumercurial_style_message = """ 2435863Snate@binkert.orgYou're missing the gem5 style hook, which automatically checks your code 244955SN/Aagainst the gem5 style rules on hg commit and qrefresh commands. This 245955SN/Ascript will now install the hook in your .hg/hgrc file. 2462632Sstever@eecs.umich.eduPress enter to continue, or ctrl-c to abort: """ 2472632Sstever@eecs.umich.edu 248955SN/Amercurial_style_hook = """ 249955SN/A# The following lines were automatically added by gem5/SConstruct 250955SN/A# to provide the gem5 style-checking hooks 251955SN/A[extensions] 2525863Snate@binkert.orgstyle = %s/util/style.py 253955SN/A 2542632Sstever@eecs.umich.edu[hooks] 2552632Sstever@eecs.umich.edupretxncommit.style = python:style.check_style 2562632Sstever@eecs.umich.edupre-qrefresh.style = python:style.check_style 2572632Sstever@eecs.umich.edu# End of SConstruct additions 2582632Sstever@eecs.umich.edu 2592632Sstever@eecs.umich.edu""" % (main.root.abspath) 2602632Sstever@eecs.umich.edu 2612632Sstever@eecs.umich.edumercurial_lib_not_found = """ 2622632Sstever@eecs.umich.eduMercurial libraries cannot be found, ignoring style hook. If 2632632Sstever@eecs.umich.eduyou are a gem5 developer, please fix this and run the style 2642632Sstever@eecs.umich.eduhook. It is important. 2652632Sstever@eecs.umich.edu""" 2662632Sstever@eecs.umich.edu 2673718Sstever@eecs.umich.edu# Check for style hook and prompt for installation if it's not there. 2683718Sstever@eecs.umich.edu# Skip this if --ignore-style was specified, there's no .hg dir to 2693718Sstever@eecs.umich.edu# install a hook in, or there's no interactive terminal to prompt. 2703718Sstever@eecs.umich.eduif not GetOption('ignore_style') and hgdir.exists() and sys.stdin.isatty(): 2713718Sstever@eecs.umich.edu style_hook = True 2725863Snate@binkert.org try: 2735863Snate@binkert.org from mercurial import ui 2743718Sstever@eecs.umich.edu ui = ui.ui() 2753718Sstever@eecs.umich.edu ui.readconfig(hgdir.File('hgrc').abspath) 2765863Snate@binkert.org style_hook = ui.config('hooks', 'pretxncommit.style', None) and \ 2775863Snate@binkert.org ui.config('hooks', 'pre-qrefresh.style', None) 2783718Sstever@eecs.umich.edu except ImportError: 2793718Sstever@eecs.umich.edu print mercurial_lib_not_found 2802634Sstever@eecs.umich.edu 2812634Sstever@eecs.umich.edu if not style_hook: 2825863Snate@binkert.org print mercurial_style_message, 2832638Sstever@eecs.umich.edu # continue unless user does ctrl-c/ctrl-d etc. 2842632Sstever@eecs.umich.edu try: 2852632Sstever@eecs.umich.edu raw_input() 2862632Sstever@eecs.umich.edu except: 2872632Sstever@eecs.umich.edu print "Input exception, exiting scons.\n" 2882632Sstever@eecs.umich.edu sys.exit(1) 2892632Sstever@eecs.umich.edu hgrc_path = '%s/.hg/hgrc' % main.root.abspath 2901858SN/A print "Adding style hook to", hgrc_path, "\n" 2913716Sstever@eecs.umich.edu try: 2922638Sstever@eecs.umich.edu hgrc = open(hgrc_path, 'a') 2932638Sstever@eecs.umich.edu hgrc.write(mercurial_style_hook) 2942638Sstever@eecs.umich.edu hgrc.close() 2952638Sstever@eecs.umich.edu except: 2962638Sstever@eecs.umich.edu print "Error updating", hgrc_path 2972638Sstever@eecs.umich.edu sys.exit(1) 2982638Sstever@eecs.umich.edu 2995863Snate@binkert.org 3005863Snate@binkert.org################################################### 3015863Snate@binkert.org# 302955SN/A# Figure out which configurations to set up based on the path(s) of 3035341Sstever@gmail.com# the target(s). 3045341Sstever@gmail.com# 3055863Snate@binkert.org################################################### 3065341Sstever@gmail.com 3074494Ssaidi@eecs.umich.edu# Find default configuration & binary. 3084494Ssaidi@eecs.umich.eduDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA/gem5.debug')) 3095863Snate@binkert.org 3101105SN/A# helper function: find last occurrence of element in list 3112667Sstever@eecs.umich.edudef rfind(l, elt, offs = -1): 3122667Sstever@eecs.umich.edu for i in range(len(l)+offs, 0, -1): 3132667Sstever@eecs.umich.edu if l[i] == elt: 3142667Sstever@eecs.umich.edu return i 3152667Sstever@eecs.umich.edu raise ValueError, "element not found" 3162667Sstever@eecs.umich.edu 3175341Sstever@gmail.com# Take a list of paths (or SCons Nodes) and return a list with all 3185863Snate@binkert.org# paths made absolute and ~-expanded. Paths will be interpreted 3195341Sstever@gmail.com# relative to the launch directory unless a different root is provided 3205341Sstever@gmail.comdef makePathListAbsolute(path_list, root=GetLaunchDir()): 3215341Sstever@gmail.com return [abspath(joinpath(root, expanduser(str(p)))) 3225863Snate@binkert.org for p in path_list] 3235341Sstever@gmail.com 3245341Sstever@gmail.com# Each target must have 'build' in the interior of the path; the 3255341Sstever@gmail.com# directory below this will determine the build parameters. For 3265863Snate@binkert.org# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 3275341Sstever@gmail.com# recognize that ALPHA_SE specifies the configuration because it 3285341Sstever@gmail.com# follow 'build' in the build path. 3295341Sstever@gmail.com 3305341Sstever@gmail.com# The funky assignment to "[:]" is needed to replace the list contents 3315341Sstever@gmail.com# in place rather than reassign the symbol to a new list, which 3325341Sstever@gmail.com# doesn't work (obviously!). 3335341Sstever@gmail.comBUILD_TARGETS[:] = makePathListAbsolute(BUILD_TARGETS) 3345341Sstever@gmail.com 3355341Sstever@gmail.com# Generate a list of the unique build roots and configs that the 3365341Sstever@gmail.com# collected targets reference. 3375863Snate@binkert.orgvariant_paths = [] 3385341Sstever@gmail.combuild_root = None 3395863Snate@binkert.orgfor t in BUILD_TARGETS: 3405341Sstever@gmail.com path_dirs = t.split('/') 3415863Snate@binkert.org try: 3425863Snate@binkert.org build_top = rfind(path_dirs, 'build', -2) 3435863Snate@binkert.org except: 3445397Ssaidi@eecs.umich.edu print "Error: no non-leaf 'build' dir found on target path", t 3455397Ssaidi@eecs.umich.edu Exit(1) 3465341Sstever@gmail.com this_build_root = joinpath('/',*path_dirs[:build_top+1]) 3475341Sstever@gmail.com if not build_root: 3485341Sstever@gmail.com build_root = this_build_root 3495341Sstever@gmail.com else: 3505341Sstever@gmail.com if this_build_root != build_root: 3515341Sstever@gmail.com print "Error: build targets not under same build root\n"\ 3525341Sstever@gmail.com " %s\n %s" % (build_root, this_build_root) 3535341Sstever@gmail.com Exit(1) 3545863Snate@binkert.org variant_path = joinpath('/',*path_dirs[:build_top+2]) 3555341Sstever@gmail.com if variant_path not in variant_paths: 3565341Sstever@gmail.com variant_paths.append(variant_path) 3575863Snate@binkert.org 3585341Sstever@gmail.com# Make sure build_root exists (might not if this is the first build there) 3595863Snate@binkert.orgif not isdir(build_root): 3605863Snate@binkert.org mkdir(build_root) 3615341Sstever@gmail.commain['BUILDROOT'] = build_root 3625863Snate@binkert.org 3635863Snate@binkert.orgExport('main') 3645341Sstever@gmail.com 3655863Snate@binkert.orgmain.SConsignFile(joinpath(build_root, "sconsign")) 3665341Sstever@gmail.com 3675871Snate@binkert.org# Default duplicate option is to use hard links, but this messes up 3685341Sstever@gmail.com# when you use emacs to edit a file in the target dir, as emacs moves 3695742Snate@binkert.org# file to file~ then copies to file, breaking the link. Symbolic 3705742Snate@binkert.org# (soft) links work better. 3715742Snate@binkert.orgmain.SetOption('duplicate', 'soft-copy') 3725341Sstever@gmail.com 3735742Snate@binkert.org# 3745742Snate@binkert.org# Set up global sticky variables... these are common to an entire build 3755341Sstever@gmail.com# tree (not specific to a particular build like ALPHA_SE) 3766017Snate@binkert.org# 3776017Snate@binkert.org 3786017Snate@binkert.orgglobal_vars_file = joinpath(build_root, 'variables.global') 3792632Sstever@eecs.umich.edu 3806016Snate@binkert.orgglobal_vars = Variables(global_vars_file, args=ARGUMENTS) 3815871Snate@binkert.org 3825871Snate@binkert.orgglobal_vars.AddVariables( 3835871Snate@binkert.org ('CC', 'C compiler', environ.get('CC', main['CC'])), 3845871Snate@binkert.org ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 3855871Snate@binkert.org ('SWIG', 'SWIG tool', environ.get('SWIG', main['SWIG'])), 3865871Snate@binkert.org ('PROTOC', 'protoc tool', environ.get('PROTOC', 'protoc')), 3875871Snate@binkert.org ('BATCH', 'Use batch pool for build and tests', False), 3883942Ssaidi@eecs.umich.edu ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 3893940Ssaidi@eecs.umich.edu ('M5_BUILD_CACHE', 'Cache built objects in this directory', False), 3903918Ssaidi@eecs.umich.edu ('EXTRAS', 'Add extra directories to the compilation', '') 3913918Ssaidi@eecs.umich.edu ) 3921858SN/A 3933918Ssaidi@eecs.umich.edu# Update main environment with values from ARGUMENTS & global_vars_file 3943918Ssaidi@eecs.umich.eduglobal_vars.Update(main) 3953918Ssaidi@eecs.umich.eduhelp_texts["global_vars"] += global_vars.GenerateHelpText(main) 3963918Ssaidi@eecs.umich.edu 3975571Snate@binkert.org# Save sticky variable settings back to current variables file 3983940Ssaidi@eecs.umich.eduglobal_vars.Save(global_vars_file, main) 3993940Ssaidi@eecs.umich.edu 4003918Ssaidi@eecs.umich.edu# Parse EXTRAS variable to build list of all directories where we're 4013918Ssaidi@eecs.umich.edu# look for sources etc. This list is exported as extras_dir_list. 4023918Ssaidi@eecs.umich.edubase_dir = main.srcdir.abspath 4033918Ssaidi@eecs.umich.eduif main['EXTRAS']: 4043918Ssaidi@eecs.umich.edu extras_dir_list = makePathListAbsolute(main['EXTRAS'].split(':')) 4053918Ssaidi@eecs.umich.eduelse: 4065871Snate@binkert.org extras_dir_list = [] 4073918Ssaidi@eecs.umich.edu 4083918Ssaidi@eecs.umich.eduExport('base_dir') 4093940Ssaidi@eecs.umich.eduExport('extras_dir_list') 4103918Ssaidi@eecs.umich.edu 4113918Ssaidi@eecs.umich.edu# the ext directory should be on the #includes path 4125397Ssaidi@eecs.umich.edumain.Append(CPPPATH=[Dir('ext')]) 4135397Ssaidi@eecs.umich.edu 4145397Ssaidi@eecs.umich.edudef strip_build_path(path, env): 4155708Ssaidi@eecs.umich.edu path = str(path) 4165708Ssaidi@eecs.umich.edu variant_base = env['BUILDROOT'] + os.path.sep 4175708Ssaidi@eecs.umich.edu if path.startswith(variant_base): 4185708Ssaidi@eecs.umich.edu path = path[len(variant_base):] 4195708Ssaidi@eecs.umich.edu elif path.startswith('build/'): 4205397Ssaidi@eecs.umich.edu path = path[6:] 4211851SN/A return path 4221851SN/A 4231858SN/A# Generate a string of the form: 424955SN/A# common/path/prefix/src1, src2 -> tgt1, tgt2 4253053Sstever@eecs.umich.edu# to print while building. 4263053Sstever@eecs.umich.educlass Transform(object): 4273053Sstever@eecs.umich.edu # all specific color settings should be here and nowhere else 4283053Sstever@eecs.umich.edu tool_color = termcap.Normal 4293053Sstever@eecs.umich.edu pfx_color = termcap.Yellow 4303053Sstever@eecs.umich.edu srcs_color = termcap.Yellow + termcap.Bold 4313053Sstever@eecs.umich.edu arrow_color = termcap.Blue + termcap.Bold 4325871Snate@binkert.org tgts_color = termcap.Yellow + termcap.Bold 4333053Sstever@eecs.umich.edu 4344742Sstever@eecs.umich.edu def __init__(self, tool, max_sources=99): 4354742Sstever@eecs.umich.edu self.format = self.tool_color + (" [%8s] " % tool) \ 4363053Sstever@eecs.umich.edu + self.pfx_color + "%s" \ 4373053Sstever@eecs.umich.edu + self.srcs_color + "%s" \ 4383053Sstever@eecs.umich.edu + self.arrow_color + " -> " \ 4393053Sstever@eecs.umich.edu + self.tgts_color + "%s" \ 4403053Sstever@eecs.umich.edu + termcap.Normal 4413053Sstever@eecs.umich.edu self.max_sources = max_sources 4423053Sstever@eecs.umich.edu 4433053Sstever@eecs.umich.edu def __call__(self, target, source, env, for_signature=None): 4443053Sstever@eecs.umich.edu # truncate source list according to max_sources param 4452667Sstever@eecs.umich.edu source = source[0:self.max_sources] 4464554Sbinkertn@umich.edu def strip(f): 4474554Sbinkertn@umich.edu return strip_build_path(str(f), env) 4482667Sstever@eecs.umich.edu if len(source) > 0: 4494554Sbinkertn@umich.edu srcs = map(strip, source) 4504554Sbinkertn@umich.edu else: 4514554Sbinkertn@umich.edu srcs = [''] 4524554Sbinkertn@umich.edu tgts = map(strip, target) 4534554Sbinkertn@umich.edu # surprisingly, os.path.commonprefix is a dumb char-by-char string 4544554Sbinkertn@umich.edu # operation that has nothing to do with paths. 4554554Sbinkertn@umich.edu com_pfx = os.path.commonprefix(srcs + tgts) 4564781Snate@binkert.org com_pfx_len = len(com_pfx) 4574554Sbinkertn@umich.edu if com_pfx: 4584554Sbinkertn@umich.edu # do some cleanup and sanity checking on common prefix 4592667Sstever@eecs.umich.edu if com_pfx[-1] == ".": 4604554Sbinkertn@umich.edu # prefix matches all but file extension: ok 4614554Sbinkertn@umich.edu # back up one to change 'foo.cc -> o' to 'foo.cc -> .o' 4624554Sbinkertn@umich.edu com_pfx = com_pfx[0:-1] 4634554Sbinkertn@umich.edu elif com_pfx[-1] == "/": 4642667Sstever@eecs.umich.edu # common prefix is directory path: OK 4654554Sbinkertn@umich.edu pass 4662667Sstever@eecs.umich.edu else: 4674554Sbinkertn@umich.edu src0_len = len(srcs[0]) 4684554Sbinkertn@umich.edu tgt0_len = len(tgts[0]) 4692667Sstever@eecs.umich.edu if src0_len == com_pfx_len: 4705522Snate@binkert.org # source is a substring of target, OK 4715522Snate@binkert.org pass 4725522Snate@binkert.org elif tgt0_len == com_pfx_len: 4735522Snate@binkert.org # target is a substring of source, need to back up to 4745522Snate@binkert.org # avoid empty string on RHS of arrow 4755522Snate@binkert.org sep_idx = com_pfx.rfind(".") 4765522Snate@binkert.org if sep_idx != -1: 4775522Snate@binkert.org com_pfx = com_pfx[0:sep_idx] 4785522Snate@binkert.org else: 4795522Snate@binkert.org com_pfx = '' 4805522Snate@binkert.org elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".": 4815522Snate@binkert.org # still splitting at file extension: ok 4825522Snate@binkert.org pass 4835522Snate@binkert.org else: 4845522Snate@binkert.org # probably a fluke; ignore it 4855522Snate@binkert.org com_pfx = '' 4865522Snate@binkert.org # recalculate length in case com_pfx was modified 4875522Snate@binkert.org com_pfx_len = len(com_pfx) 4885522Snate@binkert.org def fmt(files): 4895522Snate@binkert.org f = map(lambda s: s[com_pfx_len:], files) 4905522Snate@binkert.org return ', '.join(f) 4915522Snate@binkert.org return self.format % (com_pfx, fmt(srcs), fmt(tgts)) 4925522Snate@binkert.org 4935522Snate@binkert.orgExport('Transform') 4945522Snate@binkert.org 4955522Snate@binkert.org# enable the regression script to use the termcap 4962638Sstever@eecs.umich.edumain['TERMCAP'] = termcap 4972638Sstever@eecs.umich.edu 4982638Sstever@eecs.umich.eduif GetOption('verbose'): 4993716Sstever@eecs.umich.edu def MakeAction(action, string, *args, **kwargs): 5005522Snate@binkert.org return Action(action, *args, **kwargs) 5015522Snate@binkert.orgelse: 5025522Snate@binkert.org MakeAction = Action 5035522Snate@binkert.org main['CCCOMSTR'] = Transform("CC") 5045522Snate@binkert.org main['CXXCOMSTR'] = Transform("CXX") 5055522Snate@binkert.org main['ASCOMSTR'] = Transform("AS") 5061858SN/A main['SWIGCOMSTR'] = Transform("SWIG") 5075227Ssaidi@eecs.umich.edu main['ARCOMSTR'] = Transform("AR", 0) 5085227Ssaidi@eecs.umich.edu main['LINKCOMSTR'] = Transform("LINK", 0) 5095227Ssaidi@eecs.umich.edu main['RANLIBCOMSTR'] = Transform("RANLIB", 0) 5105227Ssaidi@eecs.umich.edu main['M4COMSTR'] = Transform("M4") 5115227Ssaidi@eecs.umich.edu main['SHCCCOMSTR'] = Transform("SHCC") 5125863Snate@binkert.org main['SHCXXCOMSTR'] = Transform("SHCXX") 5135227Ssaidi@eecs.umich.eduExport('MakeAction') 5145227Ssaidi@eecs.umich.edu 5155227Ssaidi@eecs.umich.edu# Initialize the Link-Time Optimization (LTO) flags 5165227Ssaidi@eecs.umich.edumain['LTO_CCFLAGS'] = [] 5175227Ssaidi@eecs.umich.edumain['LTO_LDFLAGS'] = [] 5185227Ssaidi@eecs.umich.edu 5195227Ssaidi@eecs.umich.edu# According to the readme, tcmalloc works best if the compiler doesn't 5205204Sstever@gmail.com# assume that we're using the builtin malloc and friends. These flags 5215204Sstever@gmail.com# are compiler-specific, so we need to set them after we detect which 5225204Sstever@gmail.com# compiler we're using. 5235204Sstever@gmail.commain['TCMALLOC_CCFLAGS'] = [] 5245204Sstever@gmail.com 5255204Sstever@gmail.comCXX_version = readCommand([main['CXX'],'--version'], exception=False) 5265204Sstever@gmail.comCXX_V = readCommand([main['CXX'],'-V'], exception=False) 5275204Sstever@gmail.com 5285204Sstever@gmail.commain['GCC'] = CXX_version and CXX_version.find('g++') >= 0 5295204Sstever@gmail.commain['CLANG'] = CXX_version and CXX_version.find('clang') >= 0 5305204Sstever@gmail.comif main['GCC'] + main['CLANG'] > 1: 5315204Sstever@gmail.com print 'Error: How can we have two at the same time?' 5325204Sstever@gmail.com Exit(1) 5335204Sstever@gmail.com 5345204Sstever@gmail.com# Set up default C++ compiler flags 5355204Sstever@gmail.comif main['GCC'] or main['CLANG']: 5365204Sstever@gmail.com # As gcc and clang share many flags, do the common parts here 5375204Sstever@gmail.com main.Append(CCFLAGS=['-pipe']) 5385204Sstever@gmail.com main.Append(CCFLAGS=['-fno-strict-aliasing']) 5393118Sstever@eecs.umich.edu # Enable -Wall and then disable the few warnings that we 5403118Sstever@eecs.umich.edu # consistently violate 5413118Sstever@eecs.umich.edu main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef']) 5423118Sstever@eecs.umich.edu # We always compile using C++11, but only gcc >= 4.7 and clang 3.1 5433118Sstever@eecs.umich.edu # actually use that name, so we stick with c++0x 5445863Snate@binkert.org main.Append(CXXFLAGS=['-std=c++0x']) 5453118Sstever@eecs.umich.edu # Add selected sanity checks from -Wextra 5465863Snate@binkert.org main.Append(CXXFLAGS=['-Wmissing-field-initializers', 5473118Sstever@eecs.umich.edu '-Woverloaded-virtual']) 5485863Snate@binkert.orgelse: 5495863Snate@binkert.org print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 5505863Snate@binkert.org print "Don't know what compiler options to use for your compiler." 5515863Snate@binkert.org print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 5525863Snate@binkert.org print termcap.Yellow + ' version:' + termcap.Normal, 5535863Snate@binkert.org if not CXX_version: 5545863Snate@binkert.org print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 5555863Snate@binkert.org termcap.Normal 5566003Snate@binkert.org else: 5575863Snate@binkert.org print CXX_version.replace('\n', '<nl>') 5585863Snate@binkert.org print " If you're trying to use a compiler other than GCC" 5595863Snate@binkert.org print " or clang, there appears to be something wrong with your" 5605863Snate@binkert.org print " environment." 5615863Snate@binkert.org print " " 5625863Snate@binkert.org print " If you are trying to use a compiler other than those listed" 5635863Snate@binkert.org print " above you will need to ease fix SConstruct and " 5645863Snate@binkert.org print " src/SConscript to support that compiler." 5655863Snate@binkert.org Exit(1) 5665863Snate@binkert.org 5675863Snate@binkert.orgif main['GCC']: 5685863Snate@binkert.org # Check for a supported version of gcc, >= 4.4 is needed for c++0x 5695863Snate@binkert.org # support. See http://gcc.gnu.org/projects/cxx0x.html for details 5705863Snate@binkert.org gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 5715863Snate@binkert.org if compareVersions(gcc_version, "4.4") < 0: 5723118Sstever@eecs.umich.edu print 'Error: gcc version 4.4 or newer required.' 5735863Snate@binkert.org print ' Installed version:', gcc_version 5743118Sstever@eecs.umich.edu Exit(1) 5753118Sstever@eecs.umich.edu 5765863Snate@binkert.org main['GCC_VERSION'] = gcc_version 5775863Snate@binkert.org 5785863Snate@binkert.org # Check for versions with bugs 5795863Snate@binkert.org if not compareVersions(gcc_version, '4.4.1') or \ 5805863Snate@binkert.org not compareVersions(gcc_version, '4.4.2'): 5815863Snate@binkert.org print 'Info: Tree vectorizer in GCC 4.4.1 & 4.4.2 is buggy, disabling.' 5823118Sstever@eecs.umich.edu main.Append(CCFLAGS=['-fno-tree-vectorize']) 5833483Ssaidi@eecs.umich.edu 5843494Ssaidi@eecs.umich.edu # LTO support is only really working properly from 4.6 and beyond 5853494Ssaidi@eecs.umich.edu if compareVersions(gcc_version, '4.6') >= 0: 5863483Ssaidi@eecs.umich.edu # Add the appropriate Link-Time Optimization (LTO) flags 5873483Ssaidi@eecs.umich.edu # unless LTO is explicitly turned off. Note that these flags 5883483Ssaidi@eecs.umich.edu # are only used by the fast target. 5893053Sstever@eecs.umich.edu if not GetOption('no_lto'): 5903053Sstever@eecs.umich.edu # Pass the LTO flag when compiling to produce GIMPLE 5913918Ssaidi@eecs.umich.edu # output, we merely create the flags here and only append 5923053Sstever@eecs.umich.edu # them later/ 5933053Sstever@eecs.umich.edu main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 5943053Sstever@eecs.umich.edu 5953053Sstever@eecs.umich.edu # Use the same amount of jobs for LTO as we are running 5963053Sstever@eecs.umich.edu # scons with, we hardcode the use of the linker plugin 5971858SN/A # which requires either gold or GNU ld >= 2.21 5981858SN/A main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs'), 5991858SN/A '-fuse-linker-plugin'] 6001858SN/A 6011858SN/A main.Append(TCMALLOC_CCFLAGS=['-fno-builtin-malloc', '-fno-builtin-calloc', 6021858SN/A '-fno-builtin-realloc', '-fno-builtin-free']) 6035863Snate@binkert.org 6045863Snate@binkert.orgelif main['CLANG']: 6051859SN/A # Check for a supported version of clang, >= 2.9 is needed to 6065863Snate@binkert.org # support similar features as gcc 4.4. See 6071858SN/A # http://clang.llvm.org/cxx_status.html for details 6085863Snate@binkert.org clang_version_re = re.compile(".* version (\d+\.\d+)") 6091858SN/A clang_version_match = clang_version_re.match(CXX_version) 6101859SN/A if (clang_version_match): 6111859SN/A clang_version = clang_version_match.groups()[0] 6125863Snate@binkert.org if compareVersions(clang_version, "2.9") < 0: 6133053Sstever@eecs.umich.edu print 'Error: clang version 2.9 or newer required.' 6143053Sstever@eecs.umich.edu print ' Installed version:', clang_version 6153053Sstever@eecs.umich.edu Exit(1) 6163053Sstever@eecs.umich.edu else: 6171859SN/A print 'Error: Unable to determine clang version.' 6181859SN/A Exit(1) 6191859SN/A 6201859SN/A # clang has a few additional warnings that we disable, 6211859SN/A # tautological comparisons are allowed due to unsigned integers 6221859SN/A # being compared to constants that happen to be 0, and extraneous 6231859SN/A # parantheses are allowed due to Ruby's printing of the AST, 6241859SN/A # finally self assignments are allowed as the generated CPU code 6251862SN/A # is relying on this 6261859SN/A main.Append(CCFLAGS=['-Wno-tautological-compare', 6271859SN/A '-Wno-parentheses', 6281859SN/A '-Wno-self-assign']) 6295863Snate@binkert.org 6305863Snate@binkert.org main.Append(TCMALLOC_CCFLAGS=['-fno-builtin']) 6315863Snate@binkert.org 6325863Snate@binkert.org # On Mac OS X/Darwin we need to also use libc++ (part of XCode) as 6331858SN/A # opposed to libstdc++, as the later is dated. 6341858SN/A if sys.platform == "darwin": 6355863Snate@binkert.org main.Append(CXXFLAGS=['-stdlib=libc++']) 6365863Snate@binkert.org main.Append(LIBS=['c++']) 6375863Snate@binkert.org 6385863Snate@binkert.orgelse: 6395863Snate@binkert.org print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 6405871Snate@binkert.org print "Don't know what compiler options to use for your compiler." 6415871Snate@binkert.org print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 6422139SN/A print termcap.Yellow + ' version:' + termcap.Normal, 6434202Sbinkertn@umich.edu if not CXX_version: 6444202Sbinkertn@umich.edu print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 6452139SN/A termcap.Normal 6462155SN/A else: 6474202Sbinkertn@umich.edu print CXX_version.replace('\n', '<nl>') 6484202Sbinkertn@umich.edu print " If you're trying to use a compiler other than GCC" 6494202Sbinkertn@umich.edu print " or clang, there appears to be something wrong with your" 6502155SN/A print " environment." 6515863Snate@binkert.org print " " 6521869SN/A print " If you are trying to use a compiler other than those listed" 6531869SN/A print " above you will need to ease fix SConstruct and " 6545863Snate@binkert.org print " src/SConscript to support that compiler." 6555863Snate@binkert.org Exit(1) 6564202Sbinkertn@umich.edu 6575863Snate@binkert.org# Set up common yacc/bison flags (needed for Ruby) 6585863Snate@binkert.orgmain['YACCFLAGS'] = '-d' 6595863Snate@binkert.orgmain['YACCHXXFILESUFFIX'] = '.hh' 6604202Sbinkertn@umich.edu 6614202Sbinkertn@umich.edu# Do this after we save setting back, or else we'll tack on an 6625863Snate@binkert.org# extra 'qdo' every time we run scons. 6635742Snate@binkert.orgif main['BATCH']: 6645742Snate@binkert.org main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 6655341Sstever@gmail.com main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 6665342Sstever@gmail.com main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 6675342Sstever@gmail.com main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 6684202Sbinkertn@umich.edu main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 6694202Sbinkertn@umich.edu 6704202Sbinkertn@umich.eduif sys.platform == 'cygwin': 6714202Sbinkertn@umich.edu # cygwin has some header file issues... 6724202Sbinkertn@umich.edu main.Append(CCFLAGS=["-Wno-uninitialized"]) 6735863Snate@binkert.org 6745863Snate@binkert.org# Check for the protobuf compiler 6755863Snate@binkert.orgprotoc_version = readCommand([main['PROTOC'], '--version'], 6765863Snate@binkert.org exception='').split() 6775863Snate@binkert.org 6785863Snate@binkert.org# First two words should be "libprotoc x.y.z" 6795863Snate@binkert.orgif len(protoc_version) < 2 or protoc_version[0] != 'libprotoc': 6805863Snate@binkert.org print termcap.Yellow + termcap.Bold + \ 6815863Snate@binkert.org 'Warning: Protocol buffer compiler (protoc) not found.\n' + \ 6825863Snate@binkert.org ' Please install protobuf-compiler for tracing support.' + \ 6835863Snate@binkert.org termcap.Normal 6845863Snate@binkert.org main['PROTOC'] = False 6855863Snate@binkert.orgelse: 6865863Snate@binkert.org # Based on the availability of the compress stream wrappers, 6875863Snate@binkert.org # require 2.1.0 6885863Snate@binkert.org min_protoc_version = '2.1.0' 6895863Snate@binkert.org if compareVersions(protoc_version[1], min_protoc_version) < 0: 6905863Snate@binkert.org print termcap.Yellow + termcap.Bold + \ 6915863Snate@binkert.org 'Warning: protoc version', min_protoc_version, \ 6925863Snate@binkert.org 'or newer required.\n' + \ 6935952Ssaidi@eecs.umich.edu ' Installed version:', protoc_version[1], \ 6941869SN/A termcap.Normal 6951858SN/A main['PROTOC'] = False 6965863Snate@binkert.org else: 6975863Snate@binkert.org # Attempt to determine the appropriate include path and 6981869SN/A # library path using pkg-config, that means we also need to 6991858SN/A # check for pkg-config. Note that it is possible to use 7005863Snate@binkert.org # protobuf without the involvement of pkg-config. Later on we 7015863Snate@binkert.org # check go a library config check and at that point the test 7025863Snate@binkert.org # will fail if libprotobuf cannot be found. 7035863Snate@binkert.org if readCommand(['pkg-config', '--version'], exception=''): 7045952Ssaidi@eecs.umich.edu try: 7051858SN/A # Attempt to establish what linking flags to add for protobuf 706955SN/A # using pkg-config 707955SN/A main.ParseConfig('pkg-config --cflags --libs-only-L protobuf') 7081869SN/A except: 7091869SN/A print termcap.Yellow + termcap.Bold + \ 7101869SN/A 'Warning: pkg-config could not get protobuf flags.' + \ 7111869SN/A termcap.Normal 7121869SN/A 7135863Snate@binkert.org# Check for SWIG 7145863Snate@binkert.orgif not main.has_key('SWIG'): 7155863Snate@binkert.org print 'Error: SWIG utility not found.' 7161869SN/A print ' Please install (see http://www.swig.org) and retry.' 7175863Snate@binkert.org Exit(1) 7181869SN/A 7195863Snate@binkert.org# Check for appropriate SWIG version 7201869SN/Aswig_version = readCommand([main['SWIG'], '-version'], exception='').split() 7211869SN/A# First 3 words should be "SWIG Version x.y.z" 7221869SN/Aif len(swig_version) < 3 or \ 7231869SN/A swig_version[0] != 'SWIG' or swig_version[1] != 'Version': 7241869SN/A print 'Error determining SWIG version.' 7255863Snate@binkert.org Exit(1) 7265863Snate@binkert.org 7271869SN/Amin_swig_version = '1.3.34' 7281869SN/Aif compareVersions(swig_version[2], min_swig_version) < 0: 7291869SN/A print 'Error: SWIG version', min_swig_version, 'or newer required.' 7301869SN/A print ' Installed version:', swig_version[2] 7311869SN/A Exit(1) 7321869SN/A 7331869SN/Aif swig_version[2] in ["2.0.9", "2.0.10"]: 7345863Snate@binkert.org print '\n' + termcap.Yellow + termcap.Bold + \ 7355863Snate@binkert.org 'Warning: SWIG version 2.0.9/10 sometimes generates broken code.\n' + \ 7361869SN/A termcap.Normal + \ 7375863Snate@binkert.org 'This problem only affects some platforms and some Python\n' + \ 7385863Snate@binkert.org 'versions. See the following SWIG bug report for details:\n' + \ 7393356Sbinkertn@umich.edu 'http://sourceforge.net/p/swig/bugs/1297/\n' 7403356Sbinkertn@umich.edu 7413356Sbinkertn@umich.edu 7423356Sbinkertn@umich.edu# Set up SWIG flags & scanner 7433356Sbinkertn@umich.eduswig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS') 7444781Snate@binkert.orgmain.Append(SWIGFLAGS=swig_flags) 7455863Snate@binkert.org 7465863Snate@binkert.org# filter out all existing swig scanners, they mess up the dependency 7471869SN/A# stuff for some reason 7481869SN/Ascanners = [] 7491869SN/Afor scanner in main['SCANNERS']: 7501869SN/A skeys = scanner.skeys 7511869SN/A if skeys == '.i': 7522638Sstever@eecs.umich.edu continue 7532638Sstever@eecs.umich.edu 7545871Snate@binkert.org if isinstance(skeys, (list, tuple)) and '.i' in skeys: 7552638Sstever@eecs.umich.edu continue 7565749Scws3k@cs.virginia.edu 7575749Scws3k@cs.virginia.edu scanners.append(scanner) 7585871Snate@binkert.org 7595749Scws3k@cs.virginia.edu# add the new swig scanner that we like better 7601869SN/Afrom SCons.Scanner import ClassicCPP as CPPScanner 7611869SN/Aswig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")' 7623546Sgblack@eecs.umich.eduscanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re)) 7633546Sgblack@eecs.umich.edu 7643546Sgblack@eecs.umich.edu# replace the scanners list that has what we want 7653546Sgblack@eecs.umich.edumain['SCANNERS'] = scanners 7664202Sbinkertn@umich.edu 7675863Snate@binkert.org# Add a custom Check function to the Configure context so that we can 7683546Sgblack@eecs.umich.edu# figure out if the compiler adds leading underscores to global 7693546Sgblack@eecs.umich.edu# variables. This is needed for the autogenerated asm files that we 7703546Sgblack@eecs.umich.edu# use for embedding the python code. 7713546Sgblack@eecs.umich.edudef CheckLeading(context): 7724781Snate@binkert.org context.Message("Checking for leading underscore in global variables...") 7735863Snate@binkert.org # 1) Define a global variable called x from asm so the C compiler 7744781Snate@binkert.org # won't change the symbol at all. 7754781Snate@binkert.org # 2) Declare that variable. 7764781Snate@binkert.org # 3) Use the variable 7774781Snate@binkert.org # 7784781Snate@binkert.org # If the compiler prepends an underscore, this will successfully 7795863Snate@binkert.org # link because the external symbol 'x' will be called '_x' which 7804781Snate@binkert.org # was defined by the asm statement. If the compiler does not 7814781Snate@binkert.org # prepend an underscore, this will not successfully link because 7824781Snate@binkert.org # '_x' will have been defined by assembly, while the C portion of 7834781Snate@binkert.org # the code will be trying to use 'x' 7843546Sgblack@eecs.umich.edu ret = context.TryLink(''' 7853546Sgblack@eecs.umich.edu asm(".globl _x; _x: .byte 0"); 7863546Sgblack@eecs.umich.edu extern int x; 7874781Snate@binkert.org int main() { return x; } 7883546Sgblack@eecs.umich.edu ''', extension=".c") 7893546Sgblack@eecs.umich.edu context.env.Append(LEADING_UNDERSCORE=ret) 7903546Sgblack@eecs.umich.edu context.Result(ret) 7913546Sgblack@eecs.umich.edu return ret 7923546Sgblack@eecs.umich.edu 7933546Sgblack@eecs.umich.edu# Platform-specific configuration. Note again that we assume that all 7943546Sgblack@eecs.umich.edu# builds under a given build root run on the same host platform. 7953546Sgblack@eecs.umich.educonf = Configure(main, 7963546Sgblack@eecs.umich.edu conf_dir = joinpath(build_root, '.scons_config'), 7973546Sgblack@eecs.umich.edu log_file = joinpath(build_root, 'scons_config.log'), 7984202Sbinkertn@umich.edu custom_tests = { 'CheckLeading' : CheckLeading }) 7993546Sgblack@eecs.umich.edu 8003546Sgblack@eecs.umich.edu# Check for leading underscores. Don't really need to worry either 8013546Sgblack@eecs.umich.edu# way so don't need to check the return code. 802955SN/Aconf.CheckLeading() 803955SN/A 804955SN/A# Check if we should compile a 64 bit binary on Mac OS X/Darwin 805955SN/Atry: 8061858SN/A import platform 8071858SN/A uname = platform.uname() 8081858SN/A if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0: 8095863Snate@binkert.org if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]): 8105863Snate@binkert.org main.Append(CCFLAGS=['-arch', 'x86_64']) 8115343Sstever@gmail.com main.Append(CFLAGS=['-arch', 'x86_64']) 8125343Sstever@gmail.com main.Append(LINKFLAGS=['-arch', 'x86_64']) 8135863Snate@binkert.org main.Append(ASFLAGS=['-arch', 'x86_64']) 8145863Snate@binkert.orgexcept: 8154773Snate@binkert.org pass 8165863Snate@binkert.org 8172632Sstever@eecs.umich.edu# Recent versions of scons substitute a "Null" object for Configure() 8185863Snate@binkert.org# when configuration isn't necessary, e.g., if the "--help" option is 8192023SN/A# present. Unfortuantely this Null object always returns false, 8205863Snate@binkert.org# breaking all our configuration checks. We replace it with our own 8215863Snate@binkert.org# more optimistic null object that returns True instead. 8225863Snate@binkert.orgif not conf: 8235863Snate@binkert.org def NullCheck(*args, **kwargs): 8245863Snate@binkert.org return True 8255863Snate@binkert.org 8265863Snate@binkert.org class NullConf: 8275863Snate@binkert.org def __init__(self, env): 8285863Snate@binkert.org self.env = env 8292632Sstever@eecs.umich.edu def Finish(self): 8305863Snate@binkert.org return self.env 8312023SN/A def __getattr__(self, mname): 8322632Sstever@eecs.umich.edu return NullCheck 8335863Snate@binkert.org 8345342Sstever@gmail.com conf = NullConf(main) 8355863Snate@binkert.org 8362632Sstever@eecs.umich.edu# Cache build files in the supplied directory. 8375863Snate@binkert.orgif main['M5_BUILD_CACHE']: 8385863Snate@binkert.org print 'Using build cache located at', main['M5_BUILD_CACHE'] 8392632Sstever@eecs.umich.edu CacheDir(main['M5_BUILD_CACHE']) 8405863Snate@binkert.org 8415863Snate@binkert.org# Find Python include and library directories for embedding the 8425863Snate@binkert.org# interpreter. We rely on python-config to resolve the appropriate 8435863Snate@binkert.org# includes and linker flags. ParseConfig does not seem to understand 8445863Snate@binkert.org# the more exotic linker flags such as -Xlinker and -export-dynamic so 8455863Snate@binkert.org# we add them explicitly below. If you want to link in an alternate 8462632Sstever@eecs.umich.edu# version of python, see above for instructions on how to invoke 8475863Snate@binkert.org# scons with the appropriate PATH set. 8485863Snate@binkert.orgpy_includes = readCommand(['python-config', '--includes'], 8492632Sstever@eecs.umich.edu exception='').split() 8501888SN/A# Strip the -I from the include folders before adding them to the 8515863Snate@binkert.org# CPPPATH 8525863Snate@binkert.orgmain.Append(CPPPATH=map(lambda inc: inc[2:], py_includes)) 8535863Snate@binkert.org 8541858SN/A# Read the linker flags and split them into libraries and other link 8555863Snate@binkert.org# flags. The libraries are added later through the call the CheckLib. 8565863Snate@binkert.orgpy_ld_flags = readCommand(['python-config', '--ldflags'], exception='').split() 8575863Snate@binkert.orgpy_libs = [] 8585863Snate@binkert.orgfor lib in py_ld_flags: 8592598SN/A if not lib.startswith('-l'): 8605863Snate@binkert.org main.Append(LINKFLAGS=[lib]) 8611858SN/A else: 8621858SN/A lib = lib[2:] 8631858SN/A if lib not in py_libs: 8645863Snate@binkert.org py_libs.append(lib) 8651858SN/A 8661858SN/A# verify that this stuff works 8671858SN/Aif not conf.CheckHeader('Python.h', '<>'): 8685863Snate@binkert.org print "Error: can't find Python.h header in", py_includes 8691871SN/A print "Install Python headers (package python-dev on Ubuntu and RedHat)" 8701858SN/A Exit(1) 8711858SN/A 8721858SN/Afor lib in py_libs: 8731858SN/A if not conf.CheckLib(lib): 8741858SN/A print "Error: can't find library %s required by python" % lib 8751858SN/A Exit(1) 8761858SN/A 8775863Snate@binkert.org# On Solaris you need to use libsocket for socket ops 8781858SN/Aif not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 8791858SN/A if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 8805863Snate@binkert.org print "Can't find library with socket calls (e.g. accept())" 8811859SN/A Exit(1) 8821859SN/A 8831869SN/A# Check for zlib. If the check passes, libz will be automatically 8845863Snate@binkert.org# added to the LIBS environment variable. 8855863Snate@binkert.orgif not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 8861869SN/A print 'Error: did not find needed zlib compression library '\ 8871965SN/A 'and/or zlib.h header file.' 8881965SN/A print ' Please install zlib and try again.' 8891965SN/A Exit(1) 8902761Sstever@eecs.umich.edu 8915863Snate@binkert.org# If we have the protobuf compiler, also make sure we have the 8921869SN/A# development libraries. If the check passes, libprotobuf will be 8935863Snate@binkert.org# automatically added to the LIBS environment variable. After 8942667Sstever@eecs.umich.edu# this, we can use the HAVE_PROTOBUF flag to determine if we have 8951869SN/A# got both protoc and libprotobuf available. 8961869SN/Amain['HAVE_PROTOBUF'] = main['PROTOC'] and \ 8972929Sktlim@umich.edu conf.CheckLibWithHeader('protobuf', 'google/protobuf/message.h', 8982929Sktlim@umich.edu 'C++', 'GOOGLE_PROTOBUF_VERIFY_VERSION;') 8995863Snate@binkert.org 9002929Sktlim@umich.edu# If we have the compiler but not the library, print another warning. 901955SN/Aif main['PROTOC'] and not main['HAVE_PROTOBUF']: 9022598SN/A print termcap.Yellow + termcap.Bold + \ 903 'Warning: did not find protocol buffer library and/or headers.\n' + \ 904 ' Please install libprotobuf-dev for tracing support.' + \ 905 termcap.Normal 906 907# Check for librt. 908have_posix_clock = \ 909 conf.CheckLibWithHeader(None, 'time.h', 'C', 910 'clock_nanosleep(0,0,NULL,NULL);') or \ 911 conf.CheckLibWithHeader('rt', 'time.h', 'C', 912 'clock_nanosleep(0,0,NULL,NULL);') 913 914if conf.CheckLib('tcmalloc'): 915 main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 916elif conf.CheckLib('tcmalloc_minimal'): 917 main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 918else: 919 print termcap.Yellow + termcap.Bold + \ 920 "You can get a 12% performance improvement by installing tcmalloc "\ 921 "(libgoogle-perftools-dev package on Ubuntu or RedHat)." + \ 922 termcap.Normal 923 924if not have_posix_clock: 925 print "Can't find library for POSIX clocks." 926 927# Check for <fenv.h> (C99 FP environment control) 928have_fenv = conf.CheckHeader('fenv.h', '<>') 929if not have_fenv: 930 print "Warning: Header file <fenv.h> not found." 931 print " This host has no IEEE FP rounding mode control." 932 933# Check if we should enable KVM-based hardware virtualization 934have_kvm = conf.CheckHeader('linux/kvm.h', '<>') 935if not have_kvm: 936 print "Info: Header file <linux/kvm.h> not found, " \ 937 "disabling KVM support." 938 939# Check if the requested target ISA is compatible with the host 940def is_isa_kvm_compatible(isa): 941 isa_comp_table = { 942 "arm" : ( "armv7l" ), 943 } 944 try: 945 import platform 946 host_isa = platform.machine() 947 except: 948 print "Warning: Failed to determine host ISA." 949 return False 950 951 return host_isa in isa_comp_table.get(isa, []) 952 953 954###################################################################### 955# 956# Finish the configuration 957# 958main = conf.Finish() 959 960###################################################################### 961# 962# Collect all non-global variables 963# 964 965# Define the universe of supported ISAs 966all_isa_list = [ ] 967Export('all_isa_list') 968 969class CpuModel(object): 970 '''The CpuModel class encapsulates everything the ISA parser needs to 971 know about a particular CPU model.''' 972 973 # Dict of available CPU model objects. Accessible as CpuModel.dict. 974 dict = {} 975 list = [] 976 defaults = [] 977 978 # Constructor. Automatically adds models to CpuModel.dict. 979 def __init__(self, name, filename, includes, strings, default=False): 980 self.name = name # name of model 981 self.filename = filename # filename for output exec code 982 self.includes = includes # include files needed in exec file 983 # The 'strings' dict holds all the per-CPU symbols we can 984 # substitute into templates etc. 985 self.strings = strings 986 987 # This cpu is enabled by default 988 self.default = default 989 990 # Add self to dict 991 if name in CpuModel.dict: 992 raise AttributeError, "CpuModel '%s' already registered" % name 993 CpuModel.dict[name] = self 994 CpuModel.list.append(name) 995 996Export('CpuModel') 997 998# Sticky variables get saved in the variables file so they persist from 999# one invocation to the next (unless overridden, in which case the new 1000# value becomes sticky). 1001sticky_vars = Variables(args=ARGUMENTS) 1002Export('sticky_vars') 1003 1004# Sticky variables that should be exported 1005export_vars = [] 1006Export('export_vars') 1007 1008# For Ruby 1009all_protocols = [] 1010Export('all_protocols') 1011protocol_dirs = [] 1012Export('protocol_dirs') 1013slicc_includes = [] 1014Export('slicc_includes') 1015 1016# Walk the tree and execute all SConsopts scripts that wil add to the 1017# above variables 1018if not GetOption('verbose'): 1019 print "Reading SConsopts" 1020for bdir in [ base_dir ] + extras_dir_list: 1021 if not isdir(bdir): 1022 print "Error: directory '%s' does not exist" % bdir 1023 Exit(1) 1024 for root, dirs, files in os.walk(bdir): 1025 if 'SConsopts' in files: 1026 if GetOption('verbose'): 1027 print "Reading", joinpath(root, 'SConsopts') 1028 SConscript(joinpath(root, 'SConsopts')) 1029 1030all_isa_list.sort() 1031 1032sticky_vars.AddVariables( 1033 EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 1034 ListVariable('CPU_MODELS', 'CPU models', 1035 sorted(n for n,m in CpuModel.dict.iteritems() if m.default), 1036 sorted(CpuModel.list)), 1037 BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 1038 False), 1039 BoolVariable('SS_COMPATIBLE_FP', 1040 'Make floating-point results compatible with SimpleScalar', 1041 False), 1042 BoolVariable('USE_SSE2', 1043 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 1044 False), 1045 BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), 1046 BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 1047 BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False), 1048 BoolVariable('USE_KVM', 'Enable hardware virtualized (KVM) CPU models', have_kvm), 1049 EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None', 1050 all_protocols), 1051 ) 1052 1053# These variables get exported to #defines in config/*.hh (see src/SConscript). 1054export_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 'TARGET_ISA', 'CP_ANNOTATE', 1055 'USE_POSIX_CLOCK', 'PROTOCOL', 'HAVE_PROTOBUF'] 1056 1057################################################### 1058# 1059# Define a SCons builder for configuration flag headers. 1060# 1061################################################### 1062 1063# This function generates a config header file that #defines the 1064# variable symbol to the current variable setting (0 or 1). The source 1065# operands are the name of the variable and a Value node containing the 1066# value of the variable. 1067def build_config_file(target, source, env): 1068 (variable, value) = [s.get_contents() for s in source] 1069 f = file(str(target[0]), 'w') 1070 print >> f, '#define', variable, value 1071 f.close() 1072 return None 1073 1074# Combine the two functions into a scons Action object. 1075config_action = MakeAction(build_config_file, Transform("CONFIG H", 2)) 1076 1077# The emitter munges the source & target node lists to reflect what 1078# we're really doing. 1079def config_emitter(target, source, env): 1080 # extract variable name from Builder arg 1081 variable = str(target[0]) 1082 # True target is config header file 1083 target = joinpath('config', variable.lower() + '.hh') 1084 val = env[variable] 1085 if isinstance(val, bool): 1086 # Force value to 0/1 1087 val = int(val) 1088 elif isinstance(val, str): 1089 val = '"' + val + '"' 1090 1091 # Sources are variable name & value (packaged in SCons Value nodes) 1092 return ([target], [Value(variable), Value(val)]) 1093 1094config_builder = Builder(emitter = config_emitter, action = config_action) 1095 1096main.Append(BUILDERS = { 'ConfigFile' : config_builder }) 1097 1098# libelf build is shared across all configs in the build root. 1099main.SConscript('ext/libelf/SConscript', 1100 variant_dir = joinpath(build_root, 'libelf')) 1101 1102# gzstream build is shared across all configs in the build root. 1103main.SConscript('ext/gzstream/SConscript', 1104 variant_dir = joinpath(build_root, 'gzstream')) 1105 1106# libfdt build is shared across all configs in the build root. 1107main.SConscript('ext/libfdt/SConscript', 1108 variant_dir = joinpath(build_root, 'libfdt')) 1109 1110################################################### 1111# 1112# This function is used to set up a directory with switching headers 1113# 1114################################################### 1115 1116main['ALL_ISA_LIST'] = all_isa_list 1117def make_switching_dir(dname, switch_headers, env): 1118 # Generate the header. target[0] is the full path of the output 1119 # header to generate. 'source' is a dummy variable, since we get the 1120 # list of ISAs from env['ALL_ISA_LIST']. 1121 def gen_switch_hdr(target, source, env): 1122 fname = str(target[0]) 1123 f = open(fname, 'w') 1124 isa = env['TARGET_ISA'].lower() 1125 print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname)) 1126 f.close() 1127 1128 # Build SCons Action object. 'varlist' specifies env vars that this 1129 # action depends on; when env['ALL_ISA_LIST'] changes these actions 1130 # should get re-executed. 1131 switch_hdr_action = MakeAction(gen_switch_hdr, 1132 Transform("GENERATE"), varlist=['ALL_ISA_LIST']) 1133 1134 # Instantiate actions for each header 1135 for hdr in switch_headers: 1136 env.Command(hdr, [], switch_hdr_action) 1137Export('make_switching_dir') 1138 1139################################################### 1140# 1141# Define build environments for selected configurations. 1142# 1143################################################### 1144 1145for variant_path in variant_paths: 1146 print "Building in", variant_path 1147 1148 # Make a copy of the build-root environment to use for this config. 1149 env = main.Clone() 1150 env['BUILDDIR'] = variant_path 1151 1152 # variant_dir is the tail component of build path, and is used to 1153 # determine the build parameters (e.g., 'ALPHA_SE') 1154 (build_root, variant_dir) = splitpath(variant_path) 1155 1156 # Set env variables according to the build directory config. 1157 sticky_vars.files = [] 1158 # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 1159 # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 1160 # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 1161 current_vars_file = joinpath(build_root, 'variables', variant_dir) 1162 if isfile(current_vars_file): 1163 sticky_vars.files.append(current_vars_file) 1164 print "Using saved variables file %s" % current_vars_file 1165 else: 1166 # Build dir-specific variables file doesn't exist. 1167 1168 # Make sure the directory is there so we can create it later 1169 opt_dir = dirname(current_vars_file) 1170 if not isdir(opt_dir): 1171 mkdir(opt_dir) 1172 1173 # Get default build variables from source tree. Variables are 1174 # normally determined by name of $VARIANT_DIR, but can be 1175 # overridden by '--default=' arg on command line. 1176 default = GetOption('default') 1177 opts_dir = joinpath(main.root.abspath, 'build_opts') 1178 if default: 1179 default_vars_files = [joinpath(build_root, 'variables', default), 1180 joinpath(opts_dir, default)] 1181 else: 1182 default_vars_files = [joinpath(opts_dir, variant_dir)] 1183 existing_files = filter(isfile, default_vars_files) 1184 if existing_files: 1185 default_vars_file = existing_files[0] 1186 sticky_vars.files.append(default_vars_file) 1187 print "Variables file %s not found,\n using defaults in %s" \ 1188 % (current_vars_file, default_vars_file) 1189 else: 1190 print "Error: cannot find variables file %s or " \ 1191 "default file(s) %s" \ 1192 % (current_vars_file, ' or '.join(default_vars_files)) 1193 Exit(1) 1194 1195 # Apply current variable settings to env 1196 sticky_vars.Update(env) 1197 1198 help_texts["local_vars"] += \ 1199 "Build variables for %s:\n" % variant_dir \ 1200 + sticky_vars.GenerateHelpText(env) 1201 1202 # Process variable settings. 1203 1204 if not have_fenv and env['USE_FENV']: 1205 print "Warning: <fenv.h> not available; " \ 1206 "forcing USE_FENV to False in", variant_dir + "." 1207 env['USE_FENV'] = False 1208 1209 if not env['USE_FENV']: 1210 print "Warning: No IEEE FP rounding mode control in", variant_dir + "." 1211 print " FP results may deviate slightly from other platforms." 1212 1213 if env['EFENCE']: 1214 env.Append(LIBS=['efence']) 1215 1216 if env['USE_KVM']: 1217 if not have_kvm: 1218 print "Warning: Can not enable KVM, host seems to lack KVM support" 1219 env['USE_KVM'] = False 1220 elif not is_isa_kvm_compatible(env['TARGET_ISA']): 1221 print "Info: KVM support disabled due to unsupported host and " \ 1222 "target ISA combination" 1223 env['USE_KVM'] = False 1224 1225 # Save sticky variable settings back to current variables file 1226 sticky_vars.Save(current_vars_file, env) 1227 1228 if env['USE_SSE2']: 1229 env.Append(CCFLAGS=['-msse2']) 1230 1231 # The src/SConscript file sets up the build rules in 'env' according 1232 # to the configured variables. It returns a list of environments, 1233 # one for each variant build (debug, opt, etc.) 1234 envList = SConscript('src/SConscript', variant_dir = variant_path, 1235 exports = 'env') 1236 1237 # Set up the regression tests for each build. 1238 for e in envList: 1239 SConscript('tests/SConscript', 1240 variant_dir = joinpath(variant_path, 'tests', e.Label), 1241 exports = { 'env' : e }, duplicate = False) 1242 1243# base help text 1244Help(''' 1245Usage: scons [scons options] [build variables] [target(s)] 1246 1247Extra scons options: 1248%(options)s 1249 1250Global build variables: 1251%(global_vars)s 1252 1253%(local_vars)s 1254''' % help_texts) 1255