1955SN/A# -*- mode:python -*- 2955SN/A 314209Sandreas.sandberg@arm.com# Copyright (c) 2013, 2015-2019 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 8112563Sgabeblack@google.comfrom __future__ import print_function 8212563Sgabeblack@google.com 836654Snate@binkert.org# Global Python includes 8410196SCurtis.Dunham@arm.comimport itertools 85955SN/Aimport os 865396Ssaidi@eecs.umich.eduimport re 8711401Sandreas.sandberg@arm.comimport shutil 885863Snate@binkert.orgimport subprocess 895863Snate@binkert.orgimport sys 904202Sbinkertn@umich.edu 915863Snate@binkert.orgfrom os import mkdir, environ 925863Snate@binkert.orgfrom os.path import abspath, basename, dirname, expanduser, normpath 935863Snate@binkert.orgfrom os.path import exists, isdir, isfile 945863Snate@binkert.orgfrom os.path import join as joinpath, split as splitpath 9513541Sandrea.mondelli@ucf.edufrom re import match 96955SN/A 976654Snate@binkert.org# SCons includes 985273Sstever@gmail.comimport SCons 995871Snate@binkert.orgimport SCons.Node 10013758Sgabeblack@google.comimport SCons.Node.FS 1015273Sstever@gmail.com 1026654Snate@binkert.orgfrom m5.util import compareVersions, readCommand 1035396Ssaidi@eecs.umich.edu 1048120Sgblack@eecs.umich.eduhelp_texts = { 1058120Sgblack@eecs.umich.edu "options" : "", 1068120Sgblack@eecs.umich.edu "global_vars" : "", 1078120Sgblack@eecs.umich.edu "local_vars" : "" 1088120Sgblack@eecs.umich.edu} 1098120Sgblack@eecs.umich.edu 1108120Sgblack@eecs.umich.eduExport("help_texts") 1118120Sgblack@eecs.umich.edu 1128879Ssteve.reinhardt@amd.com 1138879Ssteve.reinhardt@amd.com# There's a bug in scons in that (1) by default, the help texts from 1148879Ssteve.reinhardt@amd.com# AddOption() are supposed to be displayed when you type 'scons -h' 1158879Ssteve.reinhardt@amd.com# and (2) you can override the help displayed by 'scons -h' using the 1168879Ssteve.reinhardt@amd.com# Help() function, but these two features are incompatible: once 1178879Ssteve.reinhardt@amd.com# you've overridden the help text using Help(), there's no way to get 1188879Ssteve.reinhardt@amd.com# at the help texts from AddOptions. See: 1198879Ssteve.reinhardt@amd.com# http://scons.tigris.org/issues/show_bug.cgi?id=2356 1208879Ssteve.reinhardt@amd.com# http://scons.tigris.org/issues/show_bug.cgi?id=2611 1218879Ssteve.reinhardt@amd.com# This hack lets us extract the help text from AddOptions and 1228879Ssteve.reinhardt@amd.com# re-inject it via Help(). Ideally someday this bug will be fixed and 1238879Ssteve.reinhardt@amd.com# we can just use AddOption directly. 1248879Ssteve.reinhardt@amd.comdef AddLocalOption(*args, **kwargs): 1258120Sgblack@eecs.umich.edu col_width = 30 1268120Sgblack@eecs.umich.edu 1278120Sgblack@eecs.umich.edu help = " " + ", ".join(args) 1288120Sgblack@eecs.umich.edu if "help" in kwargs: 1298120Sgblack@eecs.umich.edu length = len(help) 1308120Sgblack@eecs.umich.edu if length >= col_width: 1318120Sgblack@eecs.umich.edu help += "\n" + " " * col_width 1328120Sgblack@eecs.umich.edu else: 1338120Sgblack@eecs.umich.edu help += " " * (col_width - length) 1348120Sgblack@eecs.umich.edu help += kwargs["help"] 1358120Sgblack@eecs.umich.edu help_texts["options"] += help + "\n" 1368120Sgblack@eecs.umich.edu 1378120Sgblack@eecs.umich.edu AddOption(*args, **kwargs) 1388120Sgblack@eecs.umich.edu 1398879Ssteve.reinhardt@amd.comAddLocalOption('--colors', dest='use_colors', action='store_true', 1408879Ssteve.reinhardt@amd.com help="Add color to abbreviated scons output") 1418879Ssteve.reinhardt@amd.comAddLocalOption('--no-colors', dest='use_colors', action='store_false', 1428879Ssteve.reinhardt@amd.com help="Don't add color to abbreviated scons output") 14310458Sandreas.hansson@arm.comAddLocalOption('--with-cxx-config', dest='with_cxx_config', 14410458Sandreas.hansson@arm.com action='store_true', 14510458Sandreas.hansson@arm.com help="Build with support for C++-based configuration") 1468879Ssteve.reinhardt@amd.comAddLocalOption('--default', dest='default', type='string', action='store', 1478879Ssteve.reinhardt@amd.com help='Override which build_opts file to use for defaults') 1488879Ssteve.reinhardt@amd.comAddLocalOption('--ignore-style', dest='ignore_style', action='store_true', 1498879Ssteve.reinhardt@amd.com help='Disable style checking hooks') 15013421Sciro.santilli@arm.comAddLocalOption('--gold-linker', dest='gold_linker', action='store_true', 15113421Sciro.santilli@arm.com help='Use the gold linker') 1529227Sandreas.hansson@arm.comAddLocalOption('--no-lto', dest='no_lto', action='store_true', 1539227Sandreas.hansson@arm.com help='Disable Link-Time Optimization for fast') 15412063Sgabeblack@google.comAddLocalOption('--force-lto', dest='force_lto', action='store_true', 15512063Sgabeblack@google.com help='Use Link-Time Optimization instead of partial linking' + 15612063Sgabeblack@google.com ' when the compiler doesn\'t support using them together.') 1578879Ssteve.reinhardt@amd.comAddLocalOption('--update-ref', dest='update_ref', action='store_true', 1588879Ssteve.reinhardt@amd.com help='Update test reference outputs') 1598879Ssteve.reinhardt@amd.comAddLocalOption('--verbose', dest='verbose', action='store_true', 1608879Ssteve.reinhardt@amd.com help='Print full tool command lines') 16110453SAndrew.Bardsley@arm.comAddLocalOption('--without-python', dest='without_python', 16210453SAndrew.Bardsley@arm.com action='store_true', 16310453SAndrew.Bardsley@arm.com help='Build without Python configuration support') 16410456SCurtis.Dunham@arm.comAddLocalOption('--without-tcmalloc', dest='without_tcmalloc', 16510456SCurtis.Dunham@arm.com action='store_true', 16610456SCurtis.Dunham@arm.com help='Disable linking against tcmalloc') 16710457Sandreas.hansson@arm.comAddLocalOption('--with-ubsan', dest='with_ubsan', action='store_true', 16810457Sandreas.hansson@arm.com help='Build with Undefined Behavior Sanitizer if available') 16911342Sandreas.hansson@arm.comAddLocalOption('--with-asan', dest='with_asan', action='store_true', 17011342Sandreas.hansson@arm.com help='Build with Address Sanitizer if available') 1718120Sgblack@eecs.umich.edu 17212063Sgabeblack@google.comif GetOption('no_lto') and GetOption('force_lto'): 17312563Sgabeblack@google.com print('--no-lto and --force-lto are mutually exclusive') 17412063Sgabeblack@google.com Exit(1) 17512063Sgabeblack@google.com 1765871Snate@binkert.org######################################################################## 1775871Snate@binkert.org# 1786121Snate@binkert.org# Set up the main build environment. 1795871Snate@binkert.org# 1805871Snate@binkert.org######################################################################## 1819926Sstan.czerniawski@arm.com 18212243Sgabeblack@google.commain = Environment() 1831533SN/A 18412246Sgabeblack@google.comfrom gem5_scons import Transform 18512246Sgabeblack@google.comfrom gem5_scons.util import get_termcap 18612246Sgabeblack@google.comtermcap = get_termcap() 18712246Sgabeblack@google.com 1889239Sandreas.hansson@arm.commain_dict_keys = main.Dictionary().keys() 1899239Sandreas.hansson@arm.com 1909239Sandreas.hansson@arm.com# Check that we have a C/C++ compiler 1919239Sandreas.hansson@arm.comif not ('CC' in main_dict_keys and 'CXX' in main_dict_keys): 19212563Sgabeblack@google.com print("No C++ compiler installed (package g++ on Ubuntu and RedHat)") 1939239Sandreas.hansson@arm.com Exit(1) 1949239Sandreas.hansson@arm.com 195955SN/A################################################### 196955SN/A# 1972632Sstever@eecs.umich.edu# Figure out which configurations to set up based on the path(s) of 1982632Sstever@eecs.umich.edu# the target(s). 199955SN/A# 200955SN/A################################################### 201955SN/A 202955SN/A# Find default configuration & binary. 2038878Ssteve.reinhardt@amd.comDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA/gem5.debug')) 204955SN/A 2052632Sstever@eecs.umich.edu# helper function: find last occurrence of element in list 2062632Sstever@eecs.umich.edudef rfind(l, elt, offs = -1): 2072632Sstever@eecs.umich.edu for i in range(len(l)+offs, 0, -1): 2082632Sstever@eecs.umich.edu if l[i] == elt: 2092632Sstever@eecs.umich.edu return i 2102632Sstever@eecs.umich.edu raise ValueError, "element not found" 2112632Sstever@eecs.umich.edu 2128268Ssteve.reinhardt@amd.com# Take a list of paths (or SCons Nodes) and return a list with all 2138268Ssteve.reinhardt@amd.com# paths made absolute and ~-expanded. Paths will be interpreted 2148268Ssteve.reinhardt@amd.com# relative to the launch directory unless a different root is provided 2158268Ssteve.reinhardt@amd.comdef makePathListAbsolute(path_list, root=GetLaunchDir()): 2168268Ssteve.reinhardt@amd.com return [abspath(joinpath(root, expanduser(str(p)))) 2178268Ssteve.reinhardt@amd.com for p in path_list] 2188268Ssteve.reinhardt@amd.com 21913715Sandreas.sandberg@arm.comdef find_first_prog(prog_names): 22013715Sandreas.sandberg@arm.com """Find the absolute path to the first existing binary in prog_names""" 22113715Sandreas.sandberg@arm.com 22213715Sandreas.sandberg@arm.com if not isinstance(prog_names, (list, tuple)): 22313715Sandreas.sandberg@arm.com prog_names = [ prog_names ] 22413715Sandreas.sandberg@arm.com 22513715Sandreas.sandberg@arm.com for p in prog_names: 22613715Sandreas.sandberg@arm.com p = main.WhereIs(p) 22713715Sandreas.sandberg@arm.com if p is not None: 22813715Sandreas.sandberg@arm.com return p 22913715Sandreas.sandberg@arm.com 23013715Sandreas.sandberg@arm.com return None 23113715Sandreas.sandberg@arm.com 2322632Sstever@eecs.umich.edu# Each target must have 'build' in the interior of the path; the 2332632Sstever@eecs.umich.edu# directory below this will determine the build parameters. For 2342632Sstever@eecs.umich.edu# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 2352632Sstever@eecs.umich.edu# recognize that ALPHA_SE specifies the configuration because it 2368268Ssteve.reinhardt@amd.com# follow 'build' in the build path. 2372632Sstever@eecs.umich.edu 2388268Ssteve.reinhardt@amd.com# The funky assignment to "[:]" is needed to replace the list contents 2398268Ssteve.reinhardt@amd.com# in place rather than reassign the symbol to a new list, which 2408268Ssteve.reinhardt@amd.com# doesn't work (obviously!). 2418268Ssteve.reinhardt@amd.comBUILD_TARGETS[:] = makePathListAbsolute(BUILD_TARGETS) 2423718Sstever@eecs.umich.edu 2432634Sstever@eecs.umich.edu# Generate a list of the unique build roots and configs that the 2442634Sstever@eecs.umich.edu# collected targets reference. 2455863Snate@binkert.orgvariant_paths = [] 2462638Sstever@eecs.umich.edubuild_root = None 2478268Ssteve.reinhardt@amd.comfor t in BUILD_TARGETS: 2482632Sstever@eecs.umich.edu path_dirs = t.split('/') 2492632Sstever@eecs.umich.edu try: 2502632Sstever@eecs.umich.edu build_top = rfind(path_dirs, 'build', -2) 2512632Sstever@eecs.umich.edu except: 25212563Sgabeblack@google.com print("Error: no non-leaf 'build' dir found on target path", t) 2531858SN/A Exit(1) 2543716Sstever@eecs.umich.edu this_build_root = joinpath('/',*path_dirs[:build_top+1]) 2552638Sstever@eecs.umich.edu if not build_root: 2562638Sstever@eecs.umich.edu build_root = this_build_root 2572638Sstever@eecs.umich.edu else: 2582638Sstever@eecs.umich.edu if this_build_root != build_root: 25912563Sgabeblack@google.com print("Error: build targets not under same build root\n" 26012563Sgabeblack@google.com " %s\n %s" % (build_root, this_build_root)) 2612638Sstever@eecs.umich.edu Exit(1) 2625863Snate@binkert.org variant_path = joinpath('/',*path_dirs[:build_top+2]) 2635863Snate@binkert.org if variant_path not in variant_paths: 2645863Snate@binkert.org variant_paths.append(variant_path) 265955SN/A 2665341Sstever@gmail.com# Make sure build_root exists (might not if this is the first build there) 2675341Sstever@gmail.comif not isdir(build_root): 2685863Snate@binkert.org mkdir(build_root) 2697756SAli.Saidi@ARM.commain['BUILDROOT'] = build_root 2705341Sstever@gmail.com 2716121Snate@binkert.orgExport('main') 2724494Ssaidi@eecs.umich.edu 2736121Snate@binkert.orgmain.SConsignFile(joinpath(build_root, "sconsign")) 2741105SN/A 2752667Sstever@eecs.umich.edu# Default duplicate option is to use hard links, but this messes up 2762667Sstever@eecs.umich.edu# when you use emacs to edit a file in the target dir, as emacs moves 2772667Sstever@eecs.umich.edu# file to file~ then copies to file, breaking the link. Symbolic 2782667Sstever@eecs.umich.edu# (soft) links work better. 2796121Snate@binkert.orgmain.SetOption('duplicate', 'soft-copy') 2802667Sstever@eecs.umich.edu 2815341Sstever@gmail.com# 2825863Snate@binkert.org# Set up global sticky variables... these are common to an entire build 2835341Sstever@gmail.com# tree (not specific to a particular build like ALPHA_SE) 2845341Sstever@gmail.com# 2855341Sstever@gmail.com 2868120Sgblack@eecs.umich.eduglobal_vars_file = joinpath(build_root, 'variables.global') 2875341Sstever@gmail.com 2888120Sgblack@eecs.umich.eduglobal_vars = Variables(global_vars_file, args=ARGUMENTS) 2895341Sstever@gmail.com 2908120Sgblack@eecs.umich.eduglobal_vars.AddVariables( 2916121Snate@binkert.org ('CC', 'C compiler', environ.get('CC', main['CC'])), 2926121Snate@binkert.org ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 29314044Sciro.santilli@arm.com ('CCFLAGS_EXTRA', 'Extra C and C++ compiler flags', ''), 29414044Sciro.santilli@arm.com ('LDFLAGS_EXTRA', 'Extra linker flags', ''), 29513715Sandreas.sandberg@arm.com ('PYTHON_CONFIG', 'Python config binary to use', 29613715Sandreas.sandberg@arm.com [ 'python2.7-config', 'python-config' ]), 2979396Sandreas.hansson@arm.com ('PROTOC', 'protoc tool', environ.get('PROTOC', 'protoc')), 2985397Ssaidi@eecs.umich.edu ('BATCH', 'Use batch pool for build and tests', False), 2995397Ssaidi@eecs.umich.edu ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 3007727SAli.Saidi@ARM.com ('M5_BUILD_CACHE', 'Cache built objects in this directory', False), 3018268Ssteve.reinhardt@amd.com ('EXTRAS', 'Add extra directories to the compilation', '') 3026168Snate@binkert.org ) 3035341Sstever@gmail.com 3048120Sgblack@eecs.umich.edu# Update main environment with values from ARGUMENTS & global_vars_file 3058120Sgblack@eecs.umich.eduglobal_vars.Update(main) 3068120Sgblack@eecs.umich.eduhelp_texts["global_vars"] += global_vars.GenerateHelpText(main) 3076814Sgblack@eecs.umich.edu 3085863Snate@binkert.org# Save sticky variable settings back to current variables file 3098120Sgblack@eecs.umich.eduglobal_vars.Save(global_vars_file, main) 3105341Sstever@gmail.com 3115863Snate@binkert.org# Parse EXTRAS variable to build list of all directories where we're 3128268Ssteve.reinhardt@amd.com# look for sources etc. This list is exported as extras_dir_list. 3136121Snate@binkert.orgbase_dir = main.srcdir.abspath 3146121Snate@binkert.orgif main['EXTRAS']: 3158268Ssteve.reinhardt@amd.com extras_dir_list = makePathListAbsolute(main['EXTRAS'].split(':')) 3165742Snate@binkert.orgelse: 3175742Snate@binkert.org extras_dir_list = [] 3185341Sstever@gmail.com 3195742Snate@binkert.orgExport('base_dir') 3205742Snate@binkert.orgExport('extras_dir_list') 3215341Sstever@gmail.com 3226017Snate@binkert.org# the ext directory should be on the #includes path 3236121Snate@binkert.orgmain.Append(CPPPATH=[Dir('ext')]) 3246017Snate@binkert.org 32512158Sandreas.sandberg@arm.com# Add shared top-level headers 32612158Sandreas.sandberg@arm.commain.Prepend(CPPPATH=Dir('include')) 32712158Sandreas.sandberg@arm.com 3288120Sgblack@eecs.umich.eduif GetOption('verbose'): 3297756SAli.Saidi@ARM.com def MakeAction(action, string, *args, **kwargs): 3307756SAli.Saidi@ARM.com return Action(action, *args, **kwargs) 3317756SAli.Saidi@ARM.comelse: 3327756SAli.Saidi@ARM.com MakeAction = Action 3337816Ssteve.reinhardt@amd.com main['CCCOMSTR'] = Transform("CC") 3347816Ssteve.reinhardt@amd.com main['CXXCOMSTR'] = Transform("CXX") 3357816Ssteve.reinhardt@amd.com main['ASCOMSTR'] = Transform("AS") 3367816Ssteve.reinhardt@amd.com main['ARCOMSTR'] = Transform("AR", 0) 3377816Ssteve.reinhardt@amd.com main['LINKCOMSTR'] = Transform("LINK", 0) 33811979Sgabeblack@google.com main['SHLINKCOMSTR'] = Transform("SHLINK", 0) 3397816Ssteve.reinhardt@amd.com main['RANLIBCOMSTR'] = Transform("RANLIB", 0) 3407816Ssteve.reinhardt@amd.com main['M4COMSTR'] = Transform("M4") 3417816Ssteve.reinhardt@amd.com main['SHCCCOMSTR'] = Transform("SHCC") 3427816Ssteve.reinhardt@amd.com main['SHCXXCOMSTR'] = Transform("SHCXX") 3437756SAli.Saidi@ARM.comExport('MakeAction') 3447756SAli.Saidi@ARM.com 3459227Sandreas.hansson@arm.com# Initialize the Link-Time Optimization (LTO) flags 3469227Sandreas.hansson@arm.commain['LTO_CCFLAGS'] = [] 3479227Sandreas.hansson@arm.commain['LTO_LDFLAGS'] = [] 3489227Sandreas.hansson@arm.com 3499590Sandreas@sandberg.pp.se# According to the readme, tcmalloc works best if the compiler doesn't 3509590Sandreas@sandberg.pp.se# assume that we're using the builtin malloc and friends. These flags 3519590Sandreas@sandberg.pp.se# are compiler-specific, so we need to set them after we detect which 3529590Sandreas@sandberg.pp.se# compiler we're using. 3539590Sandreas@sandberg.pp.semain['TCMALLOC_CCFLAGS'] = [] 3549590Sandreas@sandberg.pp.se 3556654Snate@binkert.orgCXX_version = readCommand([main['CXX'],'--version'], exception=False) 3566654Snate@binkert.orgCXX_V = readCommand([main['CXX'],'-V'], exception=False) 3575871Snate@binkert.org 3586121Snate@binkert.orgmain['GCC'] = CXX_version and CXX_version.find('g++') >= 0 3598946Sandreas.hansson@arm.commain['CLANG'] = CXX_version and CXX_version.find('clang') >= 0 3609419Sandreas.hansson@arm.comif main['GCC'] + main['CLANG'] > 1: 36112563Sgabeblack@google.com print('Error: How can we have two at the same time?') 3623918Ssaidi@eecs.umich.edu Exit(1) 3633918Ssaidi@eecs.umich.edu 3641858SN/A# Set up default C++ compiler flags 3659556Sandreas.hansson@arm.comif main['GCC'] or main['CLANG']: 3669556Sandreas.hansson@arm.com # As gcc and clang share many flags, do the common parts here 3679556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-pipe']) 3689556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-fno-strict-aliasing']) 36911294Sandreas.hansson@arm.com # Enable -Wall and -Wextra and then disable the few warnings that 37011294Sandreas.hansson@arm.com # we consistently violate 37111294Sandreas.hansson@arm.com main.Append(CCFLAGS=['-Wall', '-Wundef', '-Wextra', 37211294Sandreas.hansson@arm.com '-Wno-sign-compare', '-Wno-unused-parameter']) 37310878Sandreas.hansson@arm.com # We always compile using C++11 37410878Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-std=c++11']) 37511811Sbaz21@cam.ac.uk if sys.platform.startswith('freebsd'): 37611811Sbaz21@cam.ac.uk main.Append(CCFLAGS=['-I/usr/local/include']) 37711811Sbaz21@cam.ac.uk main.Append(CXXFLAGS=['-I/usr/local/include']) 37811982Sgabeblack@google.com 37911982Sgabeblack@google.com main['FILTER_PSHLINKFLAGS'] = lambda x: str(x).replace(' -shared', '') 38011982Sgabeblack@google.com main['PSHLINKFLAGS'] = main.subst('${FILTER_PSHLINKFLAGS(SHLINKFLAGS)}') 38113421Sciro.santilli@arm.com if GetOption('gold_linker'): 38213421Sciro.santilli@arm.com main.Append(LINKFLAGS='-fuse-ld=gold') 38311982Sgabeblack@google.com main['PLINKFLAGS'] = main.subst('${LINKFLAGS}') 38411992Sgabeblack@google.com shared_partial_flags = ['-r', '-nostdlib'] 38511982Sgabeblack@google.com main.Append(PSHLINKFLAGS=shared_partial_flags) 38611982Sgabeblack@google.com main.Append(PLINKFLAGS=shared_partial_flags) 38712305Sgabeblack@google.com 38812305Sgabeblack@google.com # Treat warnings as errors but white list some warnings that we 38912305Sgabeblack@google.com # want to allow (e.g., deprecation warnings). 39012305Sgabeblack@google.com main.Append(CCFLAGS=['-Werror', 39112305Sgabeblack@google.com '-Wno-error=deprecated-declarations', 39212305Sgabeblack@google.com '-Wno-error=deprecated', 39312305Sgabeblack@google.com ]) 3949556Sandreas.hansson@arm.comelse: 39512563Sgabeblack@google.com print(termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, end=' ') 39612563Sgabeblack@google.com print("Don't know what compiler options to use for your compiler.") 39712563Sgabeblack@google.com print(termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX']) 39812563Sgabeblack@google.com print(termcap.Yellow + ' version:' + termcap.Normal, end = ' ') 3999556Sandreas.hansson@arm.com if not CXX_version: 40012563Sgabeblack@google.com print(termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" + 40112563Sgabeblack@google.com termcap.Normal) 4029556Sandreas.hansson@arm.com else: 40312563Sgabeblack@google.com print(CXX_version.replace('\n', '<nl>')) 40412563Sgabeblack@google.com print(" If you're trying to use a compiler other than GCC") 40512563Sgabeblack@google.com print(" or clang, there appears to be something wrong with your") 40612563Sgabeblack@google.com print(" environment.") 40712563Sgabeblack@google.com print(" ") 40812563Sgabeblack@google.com print(" If you are trying to use a compiler other than those listed") 40912563Sgabeblack@google.com print(" above you will need to ease fix SConstruct and ") 41012563Sgabeblack@google.com print(" src/SConscript to support that compiler.") 4119556Sandreas.hansson@arm.com Exit(1) 4129556Sandreas.hansson@arm.com 4136121Snate@binkert.orgif main['GCC']: 41411500Sandreas.hansson@arm.com # Check for a supported version of gcc. >= 4.8 is chosen for its 41510238Sandreas.hansson@arm.com # level of c++11 support. See 41610878Sandreas.hansson@arm.com # http://gcc.gnu.org/projects/cxx0x.html for details. 4179420Sandreas.hansson@arm.com gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 41811500Sandreas.hansson@arm.com if compareVersions(gcc_version, "4.8") < 0: 41912563Sgabeblack@google.com print('Error: gcc version 4.8 or newer required.') 42012563Sgabeblack@google.com print(' Installed version: ', gcc_version) 4219420Sandreas.hansson@arm.com Exit(1) 4229420Sandreas.hansson@arm.com 4239420Sandreas.hansson@arm.com main['GCC_VERSION'] = gcc_version 4249420Sandreas.hansson@arm.com 42512063Sgabeblack@google.com if compareVersions(gcc_version, '4.9') >= 0: 42612063Sgabeblack@google.com # Incremental linking with LTO is currently broken in gcc versions 42712063Sgabeblack@google.com # 4.9 and above. A version where everything works completely hasn't 42812063Sgabeblack@google.com # yet been identified. 42912063Sgabeblack@google.com # 43012063Sgabeblack@google.com # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67548 43112063Sgabeblack@google.com main['BROKEN_INCREMENTAL_LTO'] = True 43212063Sgabeblack@google.com if compareVersions(gcc_version, '6.0') >= 0: 43312063Sgabeblack@google.com # gcc versions 6.0 and greater accept an -flinker-output flag which 43412063Sgabeblack@google.com # selects what type of output the linker should generate. This is 43512063Sgabeblack@google.com # necessary for incremental lto to work, but is also broken in 43612063Sgabeblack@google.com # current versions of gcc. It may not be necessary in future 43712063Sgabeblack@google.com # versions. We add it here since it might be, and as a reminder that 43812063Sgabeblack@google.com # it exists. It's excluded if lto is being forced. 43912063Sgabeblack@google.com # 44012063Sgabeblack@google.com # https://gcc.gnu.org/gcc-6/changes.html 44112063Sgabeblack@google.com # https://gcc.gnu.org/ml/gcc-patches/2015-11/msg03161.html 44212063Sgabeblack@google.com # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69866 44312063Sgabeblack@google.com if not GetOption('force_lto'): 44412063Sgabeblack@google.com main.Append(PSHLINKFLAGS='-flinker-output=rel') 44512063Sgabeblack@google.com main.Append(PLINKFLAGS='-flinker-output=rel') 44612063Sgabeblack@google.com 44710457Sandreas.hansson@arm.com # Make sure we warn if the user has requested to compile with the 44810457Sandreas.hansson@arm.com # Undefined Benahvior Sanitizer and this version of gcc does not 44910457Sandreas.hansson@arm.com # support it. 45010457Sandreas.hansson@arm.com if GetOption('with_ubsan') and \ 45110457Sandreas.hansson@arm.com compareVersions(gcc_version, '4.9') < 0: 45212563Sgabeblack@google.com print(termcap.Yellow + termcap.Bold + 45312563Sgabeblack@google.com 'Warning: UBSan is only supported using gcc 4.9 and later.' + 45412563Sgabeblack@google.com termcap.Normal) 45510457Sandreas.hansson@arm.com 45612063Sgabeblack@google.com disable_lto = GetOption('no_lto') 45712063Sgabeblack@google.com if not disable_lto and main.get('BROKEN_INCREMENTAL_LTO', False) and \ 45812063Sgabeblack@google.com not GetOption('force_lto'): 45912563Sgabeblack@google.com print(termcap.Yellow + termcap.Bold + 46012563Sgabeblack@google.com 'Warning: Your compiler doesn\'t support incremental linking' + 46112563Sgabeblack@google.com ' and lto at the same time, so lto is being disabled. To force' + 46212563Sgabeblack@google.com ' lto on anyway, use the --force-lto option. That will disable' + 46312563Sgabeblack@google.com ' partial linking.' + 46412563Sgabeblack@google.com termcap.Normal) 46512063Sgabeblack@google.com disable_lto = True 46612063Sgabeblack@google.com 46710238Sandreas.hansson@arm.com # Add the appropriate Link-Time Optimization (LTO) flags 46810238Sandreas.hansson@arm.com # unless LTO is explicitly turned off. Note that these flags 46910238Sandreas.hansson@arm.com # are only used by the fast target. 47012063Sgabeblack@google.com if not disable_lto: 47110238Sandreas.hansson@arm.com # Pass the LTO flag when compiling to produce GIMPLE 47210238Sandreas.hansson@arm.com # output, we merely create the flags here and only append 47310416Sandreas.hansson@arm.com # them later 47410238Sandreas.hansson@arm.com main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 4759227Sandreas.hansson@arm.com 47610238Sandreas.hansson@arm.com # Use the same amount of jobs for LTO as we are running 47710416Sandreas.hansson@arm.com # scons with 47810416Sandreas.hansson@arm.com main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 4799227Sandreas.hansson@arm.com 4809590Sandreas@sandberg.pp.se main.Append(TCMALLOC_CCFLAGS=['-fno-builtin-malloc', '-fno-builtin-calloc', 4819590Sandreas@sandberg.pp.se '-fno-builtin-realloc', '-fno-builtin-free']) 4829590Sandreas@sandberg.pp.se 48312304Sgabeblack@google.com # The address sanitizer is available for gcc >= 4.8 48412304Sgabeblack@google.com if GetOption('with_asan'): 48512304Sgabeblack@google.com if GetOption('with_ubsan') and \ 48612688Sgiacomo.travaglini@arm.com compareVersions(main['GCC_VERSION'], '4.9') >= 0: 48712688Sgiacomo.travaglini@arm.com main.Append(CCFLAGS=['-fsanitize=address,undefined', 48812688Sgiacomo.travaglini@arm.com '-fno-omit-frame-pointer'], 48913020Sshunhsingou@google.com LINKFLAGS='-fsanitize=address,undefined') 49012304Sgabeblack@google.com else: 49112688Sgiacomo.travaglini@arm.com main.Append(CCFLAGS=['-fsanitize=address', 49212688Sgiacomo.travaglini@arm.com '-fno-omit-frame-pointer'], 49313020Sshunhsingou@google.com LINKFLAGS='-fsanitize=address') 49412304Sgabeblack@google.com # Only gcc >= 4.9 supports UBSan, so check both the version 49512304Sgabeblack@google.com # and the command-line option before adding the compiler and 49612304Sgabeblack@google.com # linker flags. 49712304Sgabeblack@google.com elif GetOption('with_ubsan') and \ 49812688Sgiacomo.travaglini@arm.com compareVersions(main['GCC_VERSION'], '4.9') >= 0: 49912688Sgiacomo.travaglini@arm.com main.Append(CCFLAGS='-fsanitize=undefined') 50012688Sgiacomo.travaglini@arm.com main.Append(LINKFLAGS='-fsanitize=undefined') 50112304Sgabeblack@google.com 5028737Skoansin.tan@gmail.comelif main['CLANG']: 50310878Sandreas.hansson@arm.com # Check for a supported version of clang, >= 3.1 is needed to 50411500Sandreas.hansson@arm.com # support similar features as gcc 4.8. See 5059420Sandreas.hansson@arm.com # http://clang.llvm.org/cxx_status.html for details 5068737Skoansin.tan@gmail.com clang_version_re = re.compile(".* version (\d+\.\d+)") 50710106SMitch.Hayenga@arm.com clang_version_match = clang_version_re.search(CXX_version) 5088737Skoansin.tan@gmail.com if (clang_version_match): 5098737Skoansin.tan@gmail.com clang_version = clang_version_match.groups()[0] 51010878Sandreas.hansson@arm.com if compareVersions(clang_version, "3.1") < 0: 51112563Sgabeblack@google.com print('Error: clang version 3.1 or newer required.') 51212563Sgabeblack@google.com print(' Installed version:', clang_version) 5138737Skoansin.tan@gmail.com Exit(1) 5148737Skoansin.tan@gmail.com else: 51512563Sgabeblack@google.com print('Error: Unable to determine clang version.') 5168737Skoansin.tan@gmail.com Exit(1) 5178737Skoansin.tan@gmail.com 51811294Sandreas.hansson@arm.com # clang has a few additional warnings that we disable, extraneous 5199556Sandreas.hansson@arm.com # parantheses are allowed due to Ruby's printing of the AST, 5209556Sandreas.hansson@arm.com # finally self assignments are allowed as the generated CPU code 5219556Sandreas.hansson@arm.com # is relying on this 52211294Sandreas.hansson@arm.com main.Append(CCFLAGS=['-Wno-parentheses', 52310278SAndreas.Sandberg@ARM.com '-Wno-self-assign', 52410278SAndreas.Sandberg@ARM.com # Some versions of libstdc++ (4.8?) seem to 52510278SAndreas.Sandberg@ARM.com # use struct hash and class hash 52610278SAndreas.Sandberg@ARM.com # interchangeably. 52710278SAndreas.Sandberg@ARM.com '-Wno-mismatched-tags', 52810278SAndreas.Sandberg@ARM.com ]) 5299556Sandreas.hansson@arm.com 5309590Sandreas@sandberg.pp.se main.Append(TCMALLOC_CCFLAGS=['-fno-builtin']) 5319590Sandreas@sandberg.pp.se 5329420Sandreas.hansson@arm.com # On Mac OS X/Darwin we need to also use libc++ (part of XCode) as 5339846Sandreas.hansson@arm.com # opposed to libstdc++, as the later is dated. 5349846Sandreas.hansson@arm.com if sys.platform == "darwin": 5359846Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-stdlib=libc++']) 5369846Sandreas.hansson@arm.com main.Append(LIBS=['c++']) 5378946Sandreas.hansson@arm.com 53811811Sbaz21@cam.ac.uk # On FreeBSD we need libthr. 53911811Sbaz21@cam.ac.uk if sys.platform.startswith('freebsd'): 54011811Sbaz21@cam.ac.uk main.Append(LIBS=['thr']) 54111811Sbaz21@cam.ac.uk 54212304Sgabeblack@google.com # We require clang >= 3.1, so there is no need to check any 54312304Sgabeblack@google.com # versions here. 54412304Sgabeblack@google.com if GetOption('with_ubsan'): 54512304Sgabeblack@google.com if GetOption('with_asan'): 54613020Sshunhsingou@google.com main.Append(CCFLAGS=['-fsanitize=address,undefined', 54713020Sshunhsingou@google.com '-fno-omit-frame-pointer'], 54812304Sgabeblack@google.com LINKFLAGS='-fsanitize=address,undefined') 54912304Sgabeblack@google.com else: 55013020Sshunhsingou@google.com main.Append(CCFLAGS='-fsanitize=undefined', 55113020Sshunhsingou@google.com LINKFLAGS='-fsanitize=undefined') 55212304Sgabeblack@google.com 55312304Sgabeblack@google.com elif GetOption('with_asan'): 55413020Sshunhsingou@google.com main.Append(CCFLAGS=['-fsanitize=address', 55513020Sshunhsingou@google.com '-fno-omit-frame-pointer'], 55612304Sgabeblack@google.com LINKFLAGS='-fsanitize=address') 55712304Sgabeblack@google.com 5583918Ssaidi@eecs.umich.eduelse: 55912563Sgabeblack@google.com print(termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, end=' ') 56012563Sgabeblack@google.com print("Don't know what compiler options to use for your compiler.") 56112563Sgabeblack@google.com print(termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX']) 56212563Sgabeblack@google.com print(termcap.Yellow + ' version:' + termcap.Normal, end=' ') 5639068SAli.Saidi@ARM.com if not CXX_version: 56412563Sgabeblack@google.com print(termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" + 56512563Sgabeblack@google.com termcap.Normal) 5669068SAli.Saidi@ARM.com else: 56712563Sgabeblack@google.com print(CXX_version.replace('\n', '<nl>')) 56812563Sgabeblack@google.com print(" If you're trying to use a compiler other than GCC") 56912563Sgabeblack@google.com print(" or clang, there appears to be something wrong with your") 57012563Sgabeblack@google.com print(" environment.") 57112563Sgabeblack@google.com print(" ") 57212563Sgabeblack@google.com print(" If you are trying to use a compiler other than those listed") 57312563Sgabeblack@google.com print(" above you will need to ease fix SConstruct and ") 57412563Sgabeblack@google.com print(" src/SConscript to support that compiler.") 5753918Ssaidi@eecs.umich.edu Exit(1) 5763918Ssaidi@eecs.umich.edu 5776157Snate@binkert.org# Set up common yacc/bison flags (needed for Ruby) 5786157Snate@binkert.orgmain['YACCFLAGS'] = '-d' 5796157Snate@binkert.orgmain['YACCHXXFILESUFFIX'] = '.hh' 5806157Snate@binkert.org 5815397Ssaidi@eecs.umich.edu# Do this after we save setting back, or else we'll tack on an 5825397Ssaidi@eecs.umich.edu# extra 'qdo' every time we run scons. 5836121Snate@binkert.orgif main['BATCH']: 5846121Snate@binkert.org main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 5856121Snate@binkert.org main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 5866121Snate@binkert.org main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 5876121Snate@binkert.org main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 5886121Snate@binkert.org main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 5895397Ssaidi@eecs.umich.edu 5901851SN/Aif sys.platform == 'cygwin': 5911851SN/A # cygwin has some header file issues... 5927739Sgblack@eecs.umich.edu main.Append(CCFLAGS=["-Wno-uninitialized"]) 593955SN/A 59414209Sandreas.sandberg@arm.com 59514209Sandreas.sandberg@arm.comhave_pkg_config = readCommand(['pkg-config', '--version'], exception='') 59614209Sandreas.sandberg@arm.com 5979396Sandreas.hansson@arm.com# Check for the protobuf compiler 5989396Sandreas.hansson@arm.comprotoc_version = readCommand([main['PROTOC'], '--version'], 5999396Sandreas.hansson@arm.com exception='').split() 6009396Sandreas.hansson@arm.com 6019396Sandreas.hansson@arm.com# First two words should be "libprotoc x.y.z" 6029396Sandreas.hansson@arm.comif len(protoc_version) < 2 or protoc_version[0] != 'libprotoc': 60312563Sgabeblack@google.com print(termcap.Yellow + termcap.Bold + 60412563Sgabeblack@google.com 'Warning: Protocol buffer compiler (protoc) not found.\n' + 60512563Sgabeblack@google.com ' Please install protobuf-compiler for tracing support.' + 60612563Sgabeblack@google.com termcap.Normal) 6079396Sandreas.hansson@arm.com main['PROTOC'] = False 6089396Sandreas.hansson@arm.comelse: 6099396Sandreas.hansson@arm.com # Based on the availability of the compress stream wrappers, 6109396Sandreas.hansson@arm.com # require 2.1.0 6119396Sandreas.hansson@arm.com min_protoc_version = '2.1.0' 6129396Sandreas.hansson@arm.com if compareVersions(protoc_version[1], min_protoc_version) < 0: 61312563Sgabeblack@google.com print(termcap.Yellow + termcap.Bold + 61412563Sgabeblack@google.com 'Warning: protoc version', min_protoc_version, 61512563Sgabeblack@google.com 'or newer required.\n' + 61612563Sgabeblack@google.com ' Installed version:', protoc_version[1], 61712563Sgabeblack@google.com termcap.Normal) 6189477Sandreas.hansson@arm.com main['PROTOC'] = False 6199477Sandreas.hansson@arm.com else: 6209477Sandreas.hansson@arm.com # Attempt to determine the appropriate include path and 6219477Sandreas.hansson@arm.com # library path using pkg-config, that means we also need to 6229477Sandreas.hansson@arm.com # check for pkg-config. Note that it is possible to use 6239477Sandreas.hansson@arm.com # protobuf without the involvement of pkg-config. Later on we 6249477Sandreas.hansson@arm.com # check go a library config check and at that point the test 6259477Sandreas.hansson@arm.com # will fail if libprotobuf cannot be found. 62614209Sandreas.sandberg@arm.com if have_pkg_config: 6279477Sandreas.hansson@arm.com try: 6289477Sandreas.hansson@arm.com # Attempt to establish what linking flags to add for protobuf 6299477Sandreas.hansson@arm.com # using pkg-config 6309477Sandreas.hansson@arm.com main.ParseConfig('pkg-config --cflags --libs-only-L protobuf') 6319477Sandreas.hansson@arm.com except: 63212563Sgabeblack@google.com print(termcap.Yellow + termcap.Bold + 63312563Sgabeblack@google.com 'Warning: pkg-config could not get protobuf flags.' + 63412563Sgabeblack@google.com termcap.Normal) 6359396Sandreas.hansson@arm.com 6362667Sstever@eecs.umich.edu 63710710Sandreas.hansson@arm.com# Check for 'timeout' from GNU coreutils. If present, regressions will 63810710Sandreas.hansson@arm.com# be run with a time limit. We require version 8.13 since we rely on 63910710Sandreas.hansson@arm.com# support for the '--foreground' option. 64011811Sbaz21@cam.ac.ukif sys.platform.startswith('freebsd'): 64111811Sbaz21@cam.ac.uk timeout_lines = readCommand(['gtimeout', '--version'], 64211811Sbaz21@cam.ac.uk exception='').splitlines() 64311811Sbaz21@cam.ac.ukelse: 64411811Sbaz21@cam.ac.uk timeout_lines = readCommand(['timeout', '--version'], 64511811Sbaz21@cam.ac.uk exception='').splitlines() 64610710Sandreas.hansson@arm.com# Get the first line and tokenize it 64710710Sandreas.hansson@arm.comtimeout_version = timeout_lines[0].split() if timeout_lines else [] 64810710Sandreas.hansson@arm.commain['TIMEOUT'] = timeout_version and \ 64910710Sandreas.hansson@arm.com compareVersions(timeout_version[-1], '8.13') >= 0 65010384SCurtis.Dunham@arm.com 6519986Sandreas@sandberg.pp.se# Add a custom Check function to test for structure members. 6529986Sandreas@sandberg.pp.sedef CheckMember(context, include, decl, member, include_quotes="<>"): 6539986Sandreas@sandberg.pp.se context.Message("Checking for member %s in %s..." % 6549986Sandreas@sandberg.pp.se (member, decl)) 6559986Sandreas@sandberg.pp.se text = """ 6569986Sandreas@sandberg.pp.se#include %(header)s 6579986Sandreas@sandberg.pp.seint main(){ 6589986Sandreas@sandberg.pp.se %(decl)s test; 6599986Sandreas@sandberg.pp.se (void)test.%(member)s; 6609986Sandreas@sandberg.pp.se return 0; 6619986Sandreas@sandberg.pp.se}; 6629986Sandreas@sandberg.pp.se""" % { "header" : include_quotes[0] + include + include_quotes[1], 6639986Sandreas@sandberg.pp.se "decl" : decl, 6649986Sandreas@sandberg.pp.se "member" : member, 6659986Sandreas@sandberg.pp.se } 6669986Sandreas@sandberg.pp.se 6679986Sandreas@sandberg.pp.se ret = context.TryCompile(text, extension=".cc") 6689986Sandreas@sandberg.pp.se context.Result(ret) 6699986Sandreas@sandberg.pp.se return ret 6709986Sandreas@sandberg.pp.se 6712638Sstever@eecs.umich.edu# Platform-specific configuration. Note again that we assume that all 6722638Sstever@eecs.umich.edu# builds under a given build root run on the same host platform. 6736121Snate@binkert.orgconf = Configure(main, 6743716Sstever@eecs.umich.edu conf_dir = joinpath(build_root, '.scons_config'), 6755522Snate@binkert.org log_file = joinpath(build_root, 'scons_config.log'), 6769986Sandreas@sandberg.pp.se custom_tests = { 6779986Sandreas@sandberg.pp.se 'CheckMember' : CheckMember, 6789986Sandreas@sandberg.pp.se }) 6795522Snate@binkert.org 6805227Ssaidi@eecs.umich.edu# Check if we should compile a 64 bit binary on Mac OS X/Darwin 6815227Ssaidi@eecs.umich.edutry: 6825227Ssaidi@eecs.umich.edu import platform 6835227Ssaidi@eecs.umich.edu uname = platform.uname() 6846654Snate@binkert.org if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0: 6856654Snate@binkert.org if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]): 6867769SAli.Saidi@ARM.com main.Append(CCFLAGS=['-arch', 'x86_64']) 6877769SAli.Saidi@ARM.com main.Append(CFLAGS=['-arch', 'x86_64']) 6887769SAli.Saidi@ARM.com main.Append(LINKFLAGS=['-arch', 'x86_64']) 6897769SAli.Saidi@ARM.com main.Append(ASFLAGS=['-arch', 'x86_64']) 6905227Ssaidi@eecs.umich.eduexcept: 6915227Ssaidi@eecs.umich.edu pass 6925227Ssaidi@eecs.umich.edu 6935204Sstever@gmail.com# Recent versions of scons substitute a "Null" object for Configure() 6945204Sstever@gmail.com# when configuration isn't necessary, e.g., if the "--help" option is 6955204Sstever@gmail.com# present. Unfortuantely this Null object always returns false, 6965204Sstever@gmail.com# breaking all our configuration checks. We replace it with our own 6975204Sstever@gmail.com# more optimistic null object that returns True instead. 6985204Sstever@gmail.comif not conf: 6995204Sstever@gmail.com def NullCheck(*args, **kwargs): 7005204Sstever@gmail.com return True 7015204Sstever@gmail.com 7025204Sstever@gmail.com class NullConf: 7035204Sstever@gmail.com def __init__(self, env): 7045204Sstever@gmail.com self.env = env 7055204Sstever@gmail.com def Finish(self): 7065204Sstever@gmail.com return self.env 7075204Sstever@gmail.com def __getattr__(self, mname): 7085204Sstever@gmail.com return NullCheck 7095204Sstever@gmail.com 7106121Snate@binkert.org conf = NullConf(main) 7115204Sstever@gmail.com 7127727SAli.Saidi@ARM.com# Cache build files in the supplied directory. 7137727SAli.Saidi@ARM.comif main['M5_BUILD_CACHE']: 71412563Sgabeblack@google.com print('Using build cache located at', main['M5_BUILD_CACHE']) 7157727SAli.Saidi@ARM.com CacheDir(main['M5_BUILD_CACHE']) 7167727SAli.Saidi@ARM.com 71711988Sandreas.sandberg@arm.commain['USE_PYTHON'] = not GetOption('without_python') 71811988Sandreas.sandberg@arm.comif main['USE_PYTHON']: 71910453SAndrew.Bardsley@arm.com # Find Python include and library directories for embedding the 72010453SAndrew.Bardsley@arm.com # interpreter. We rely on python-config to resolve the appropriate 72110453SAndrew.Bardsley@arm.com # includes and linker flags. ParseConfig does not seem to understand 72210453SAndrew.Bardsley@arm.com # the more exotic linker flags such as -Xlinker and -export-dynamic so 72310453SAndrew.Bardsley@arm.com # we add them explicitly below. If you want to link in an alternate 72410453SAndrew.Bardsley@arm.com # version of python, see above for instructions on how to invoke 72510453SAndrew.Bardsley@arm.com # scons with the appropriate PATH set. 72613715Sandreas.sandberg@arm.com 72713715Sandreas.sandberg@arm.com python_config = find_first_prog(main['PYTHON_CONFIG']) 72813715Sandreas.sandberg@arm.com if python_config is None: 72913715Sandreas.sandberg@arm.com print("Error: can't find a suitable python-config, tried %s" % \ 73013715Sandreas.sandberg@arm.com main['PYTHON_CONFIG']) 73113715Sandreas.sandberg@arm.com Exit(1) 73213715Sandreas.sandberg@arm.com 73313715Sandreas.sandberg@arm.com print("Info: Using Python config: %s" % (python_config, )) 73410453SAndrew.Bardsley@arm.com py_includes = readCommand([python_config, '--includes'], 73510453SAndrew.Bardsley@arm.com exception='').split() 73613541Sandrea.mondelli@ucf.edu py_includes = filter(lambda s: match(r'.*\/include\/.*',s), py_includes) 73710453SAndrew.Bardsley@arm.com # Strip the -I from the include folders before adding them to the 73810453SAndrew.Bardsley@arm.com # CPPPATH 73913541Sandrea.mondelli@ucf.edu py_includes = map(lambda s: s[2:] if s.startswith('-I') else s, py_includes) 74013541Sandrea.mondelli@ucf.edu main.Append(CPPPATH=py_includes) 7419812Sandreas.hansson@arm.com 74210453SAndrew.Bardsley@arm.com # Read the linker flags and split them into libraries and other link 74310453SAndrew.Bardsley@arm.com # flags. The libraries are added later through the call the CheckLib. 74410453SAndrew.Bardsley@arm.com py_ld_flags = readCommand([python_config, '--ldflags'], 74510453SAndrew.Bardsley@arm.com exception='').split() 74610453SAndrew.Bardsley@arm.com py_libs = [] 74710453SAndrew.Bardsley@arm.com for lib in py_ld_flags: 74810453SAndrew.Bardsley@arm.com if not lib.startswith('-l'): 74910453SAndrew.Bardsley@arm.com main.Append(LINKFLAGS=[lib]) 75010453SAndrew.Bardsley@arm.com else: 75110453SAndrew.Bardsley@arm.com lib = lib[2:] 75210453SAndrew.Bardsley@arm.com if lib not in py_libs: 75310453SAndrew.Bardsley@arm.com py_libs.append(lib) 7547727SAli.Saidi@ARM.com 75510453SAndrew.Bardsley@arm.com # verify that this stuff works 75610453SAndrew.Bardsley@arm.com if not conf.CheckHeader('Python.h', '<>'): 75712790Smatteo.fusi@bsc.es print("Error: Check failed for Python.h header in", py_includes) 75812790Smatteo.fusi@bsc.es print("Two possible reasons:") 75912790Smatteo.fusi@bsc.es print("1. Python headers are not installed (You can install the " 76012790Smatteo.fusi@bsc.es "package python-dev on Ubuntu and RedHat)") 76112790Smatteo.fusi@bsc.es print("2. SCons is using a wrong C compiler. This can happen if " 76212790Smatteo.fusi@bsc.es "CC has the wrong value.") 76312790Smatteo.fusi@bsc.es print("CC = %s" % main['CC']) 76410453SAndrew.Bardsley@arm.com Exit(1) 7653118Sstever@eecs.umich.edu 76610453SAndrew.Bardsley@arm.com for lib in py_libs: 76710453SAndrew.Bardsley@arm.com if not conf.CheckLib(lib): 76812563Sgabeblack@google.com print("Error: can't find library %s required by python" % lib) 76910453SAndrew.Bardsley@arm.com Exit(1) 7703118Sstever@eecs.umich.edu 7713483Ssaidi@eecs.umich.edu# On Solaris you need to use libsocket for socket ops 7723494Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 7733494Ssaidi@eecs.umich.edu if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 77412563Sgabeblack@google.com print("Can't find library with socket calls (e.g. accept())") 7753483Ssaidi@eecs.umich.edu Exit(1) 7763483Ssaidi@eecs.umich.edu 7773053Sstever@eecs.umich.edu# Check for zlib. If the check passes, libz will be automatically 7783053Sstever@eecs.umich.edu# added to the LIBS environment variable. 7793918Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 78012563Sgabeblack@google.com print('Error: did not find needed zlib compression library ' 78112563Sgabeblack@google.com 'and/or zlib.h header file.') 78212563Sgabeblack@google.com print(' Please install zlib and try again.') 7833053Sstever@eecs.umich.edu Exit(1) 7843053Sstever@eecs.umich.edu 7859396Sandreas.hansson@arm.com# If we have the protobuf compiler, also make sure we have the 7869396Sandreas.hansson@arm.com# development libraries. If the check passes, libprotobuf will be 7879396Sandreas.hansson@arm.com# automatically added to the LIBS environment variable. After 7889396Sandreas.hansson@arm.com# this, we can use the HAVE_PROTOBUF flag to determine if we have 7899396Sandreas.hansson@arm.com# got both protoc and libprotobuf available. 7909396Sandreas.hansson@arm.commain['HAVE_PROTOBUF'] = main['PROTOC'] and \ 7919396Sandreas.hansson@arm.com conf.CheckLibWithHeader('protobuf', 'google/protobuf/message.h', 7929396Sandreas.hansson@arm.com 'C++', 'GOOGLE_PROTOBUF_VERIFY_VERSION;') 7939396Sandreas.hansson@arm.com 79412920Sgabeblack@google.com# Valgrind gets much less confused if you tell it when you're using 79512920Sgabeblack@google.com# alternative stacks. 79612920Sgabeblack@google.commain['HAVE_VALGRIND'] = conf.CheckCHeader('valgrind/valgrind.h') 79712920Sgabeblack@google.com 7989477Sandreas.hansson@arm.com# If we have the compiler but not the library, print another warning. 7999396Sandreas.hansson@arm.comif main['PROTOC'] and not main['HAVE_PROTOBUF']: 80012563Sgabeblack@google.com print(termcap.Yellow + termcap.Bold + 80112563Sgabeblack@google.com 'Warning: did not find protocol buffer library and/or headers.\n' + 80212563Sgabeblack@google.com ' Please install libprotobuf-dev for tracing support.' + 80312563Sgabeblack@google.com termcap.Normal) 8049396Sandreas.hansson@arm.com 8057840Snate@binkert.org# Check for librt. 8067865Sgblack@eecs.umich.eduhave_posix_clock = \ 8077865Sgblack@eecs.umich.edu conf.CheckLibWithHeader(None, 'time.h', 'C', 8087865Sgblack@eecs.umich.edu 'clock_nanosleep(0,0,NULL,NULL);') or \ 8097865Sgblack@eecs.umich.edu conf.CheckLibWithHeader('rt', 'time.h', 'C', 8107865Sgblack@eecs.umich.edu 'clock_nanosleep(0,0,NULL,NULL);') 8117840Snate@binkert.org 8129900Sandreas@sandberg.pp.sehave_posix_timers = \ 8139900Sandreas@sandberg.pp.se conf.CheckLibWithHeader([None, 'rt'], [ 'time.h', 'signal.h' ], 'C', 8149900Sandreas@sandberg.pp.se 'timer_create(CLOCK_MONOTONIC, NULL, NULL);') 8159900Sandreas@sandberg.pp.se 81610456SCurtis.Dunham@arm.comif not GetOption('without_tcmalloc'): 81710456SCurtis.Dunham@arm.com if conf.CheckLib('tcmalloc'): 81810456SCurtis.Dunham@arm.com main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 81910456SCurtis.Dunham@arm.com elif conf.CheckLib('tcmalloc_minimal'): 82010456SCurtis.Dunham@arm.com main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 82110456SCurtis.Dunham@arm.com else: 82212563Sgabeblack@google.com print(termcap.Yellow + termcap.Bold + 82312563Sgabeblack@google.com "You can get a 12% performance improvement by " 82412563Sgabeblack@google.com "installing tcmalloc (libgoogle-perftools-dev package " 82512563Sgabeblack@google.com "on Ubuntu or RedHat)." + termcap.Normal) 8269045SAli.Saidi@ARM.com 82711235Sandreas.sandberg@arm.com 82811235Sandreas.sandberg@arm.com# Detect back trace implementations. The last implementation in the 82911235Sandreas.sandberg@arm.com# list will be used by default. 83011235Sandreas.sandberg@arm.combacktrace_impls = [ "none" ] 83111235Sandreas.sandberg@arm.com 83212485Sjang.hanhwi@gmail.combacktrace_checker = 'char temp;' + \ 83312485Sjang.hanhwi@gmail.com ' backtrace_symbols_fd((void*)&temp, 0, 0);' 83412485Sjang.hanhwi@gmail.comif conf.CheckLibWithHeader(None, 'execinfo.h', 'C', backtrace_checker): 83511235Sandreas.sandberg@arm.com backtrace_impls.append("glibc") 83611811Sbaz21@cam.ac.ukelif conf.CheckLibWithHeader('execinfo', 'execinfo.h', 'C', 83712485Sjang.hanhwi@gmail.com backtrace_checker): 83811811Sbaz21@cam.ac.uk # NetBSD and FreeBSD need libexecinfo. 83911811Sbaz21@cam.ac.uk backtrace_impls.append("glibc") 84011811Sbaz21@cam.ac.uk main.Append(LIBS=['execinfo']) 84111235Sandreas.sandberg@arm.com 84211235Sandreas.sandberg@arm.comif backtrace_impls[-1] == "none": 84311235Sandreas.sandberg@arm.com default_backtrace_impl = "none" 84412563Sgabeblack@google.com print(termcap.Yellow + termcap.Bold + 84512563Sgabeblack@google.com "No suitable back trace implementation found." + 84612563Sgabeblack@google.com termcap.Normal) 84711235Sandreas.sandberg@arm.com 8487840Snate@binkert.orgif not have_posix_clock: 84912563Sgabeblack@google.com print("Can't find library for POSIX clocks.") 8507840Snate@binkert.org 8511858SN/A# Check for <fenv.h> (C99 FP environment control) 8521858SN/Ahave_fenv = conf.CheckHeader('fenv.h', '<>') 8531858SN/Aif not have_fenv: 85412563Sgabeblack@google.com print("Warning: Header file <fenv.h> not found.") 85512563Sgabeblack@google.com print(" This host has no IEEE FP rounding mode control.") 8561858SN/A 85712230Sgiacomo.travaglini@arm.com# Check for <png.h> (libpng library needed if wanting to dump 85812230Sgiacomo.travaglini@arm.com# frame buffer image in png format) 85912230Sgiacomo.travaglini@arm.comhave_png = conf.CheckHeader('png.h', '<>') 86012230Sgiacomo.travaglini@arm.comif not have_png: 86112563Sgabeblack@google.com print("Warning: Header file <png.h> not found.") 86212563Sgabeblack@google.com print(" This host has no libpng library.") 86312563Sgabeblack@google.com print(" Disabling support for PNG framebuffers.") 86412230Sgiacomo.travaglini@arm.com 8659903Sandreas.hansson@arm.com# Check if we should enable KVM-based hardware virtualization. The API 8669903Sandreas.hansson@arm.com# we rely on exists since version 2.6.36 of the kernel, but somehow 8679903Sandreas.hansson@arm.com# the KVM_API_VERSION does not reflect the change. We test for one of 8689903Sandreas.hansson@arm.com# the types as a fall back. 86910841Sandreas.sandberg@arm.comhave_kvm = conf.CheckHeader('linux/kvm.h', '<>') 8709651SAndreas.Sandberg@ARM.comif not have_kvm: 87112563Sgabeblack@google.com print("Info: Compatible header file <linux/kvm.h> not found, " 87212563Sgabeblack@google.com "disabling KVM support.") 8739651SAndreas.Sandberg@ARM.com 87412056Sgabeblack@google.com# Check if the TUN/TAP driver is available. 87512056Sgabeblack@google.comhave_tuntap = conf.CheckHeader('linux/if_tun.h', '<>') 87612056Sgabeblack@google.comif not have_tuntap: 87712563Sgabeblack@google.com print("Info: Compatible header file <linux/if_tun.h> not found.") 87812056Sgabeblack@google.com 87910841Sandreas.sandberg@arm.com# x86 needs support for xsave. We test for the structure here since we 88010841Sandreas.sandberg@arm.com# won't be able to run new tests by the time we know which ISA we're 88110841Sandreas.sandberg@arm.com# targeting. 88210841Sandreas.sandberg@arm.comhave_kvm_xsave = conf.CheckTypeSize('struct kvm_xsave', 88310841Sandreas.sandberg@arm.com '#include <linux/kvm.h>') != 0 88410841Sandreas.sandberg@arm.com 8859651SAndreas.Sandberg@ARM.com# Check if the requested target ISA is compatible with the host 8869651SAndreas.Sandberg@ARM.comdef is_isa_kvm_compatible(isa): 8879651SAndreas.Sandberg@ARM.com try: 8889651SAndreas.Sandberg@ARM.com import platform 8899651SAndreas.Sandberg@ARM.com host_isa = platform.machine() 8909651SAndreas.Sandberg@ARM.com except: 89112563Sgabeblack@google.com print("Warning: Failed to determine host ISA.") 8929651SAndreas.Sandberg@ARM.com return False 8939651SAndreas.Sandberg@ARM.com 89410841Sandreas.sandberg@arm.com if not have_posix_timers: 89512563Sgabeblack@google.com print("Warning: Can not enable KVM, host seems to lack support " 89612563Sgabeblack@google.com "for POSIX timers") 89710841Sandreas.sandberg@arm.com return False 89810841Sandreas.sandberg@arm.com 89910841Sandreas.sandberg@arm.com if isa == "arm": 90010860Sandreas.sandberg@arm.com return host_isa in ( "armv7l", "aarch64" ) 90110841Sandreas.sandberg@arm.com elif isa == "x86": 90210841Sandreas.sandberg@arm.com if host_isa != "x86_64": 90310841Sandreas.sandberg@arm.com return False 90410841Sandreas.sandberg@arm.com 90510841Sandreas.sandberg@arm.com if not have_kvm_xsave: 90612563Sgabeblack@google.com print("KVM on x86 requires xsave support in kernel headers.") 90710841Sandreas.sandberg@arm.com return False 90810841Sandreas.sandberg@arm.com 90910841Sandreas.sandberg@arm.com return True 91010841Sandreas.sandberg@arm.com else: 91110841Sandreas.sandberg@arm.com return False 9129651SAndreas.Sandberg@ARM.com 9139651SAndreas.Sandberg@ARM.com 9149986Sandreas@sandberg.pp.se# Check if the exclude_host attribute is available. We want this to 9159986Sandreas@sandberg.pp.se# get accurate instruction counts in KVM. 9169986Sandreas@sandberg.pp.semain['HAVE_PERF_ATTR_EXCLUDE_HOST'] = conf.CheckMember( 9179986Sandreas@sandberg.pp.se 'linux/perf_event.h', 'struct perf_event_attr', 'exclude_host') 9189986Sandreas@sandberg.pp.se 91914209Sandreas.sandberg@arm.comdef check_hdf5(): 92014209Sandreas.sandberg@arm.com return \ 92114209Sandreas.sandberg@arm.com conf.CheckLibWithHeader('hdf5', 'hdf5.h', 'C', 92214209Sandreas.sandberg@arm.com 'H5Fcreate("", 0, 0, 0);') and \ 92314209Sandreas.sandberg@arm.com conf.CheckLibWithHeader('hdf5_cpp', 'H5Cpp.h', 'C++', 92414209Sandreas.sandberg@arm.com 'H5::H5File("", 0);') 92514209Sandreas.sandberg@arm.com 92614209Sandreas.sandberg@arm.comdef check_hdf5_pkg(name): 92714209Sandreas.sandberg@arm.com print("Checking for %s using pkg-config..." % name, end="") 92814209Sandreas.sandberg@arm.com if not have_pkg_config: 92914209Sandreas.sandberg@arm.com print(" pkg-config not found") 93014209Sandreas.sandberg@arm.com return False 93114209Sandreas.sandberg@arm.com 93214209Sandreas.sandberg@arm.com try: 93314209Sandreas.sandberg@arm.com main.ParseConfig('pkg-config --cflags-only-I --libs-only-L %s' % name) 93414209Sandreas.sandberg@arm.com print(" yes") 93514209Sandreas.sandberg@arm.com return True 93614209Sandreas.sandberg@arm.com except: 93714209Sandreas.sandberg@arm.com print(" no") 93814209Sandreas.sandberg@arm.com return False 93914209Sandreas.sandberg@arm.com 94014209Sandreas.sandberg@arm.com# Check if there is a pkg-config configuration for hdf5. If we find 94114209Sandreas.sandberg@arm.com# it, setup the environment to enable linking and header inclusion. We 94214209Sandreas.sandberg@arm.com# don't actually try to include any headers or link with hdf5 at this 94314209Sandreas.sandberg@arm.com# stage. 94414209Sandreas.sandberg@arm.comif not check_hdf5_pkg('hdf5-serial'): 94514209Sandreas.sandberg@arm.com check_hdf5_pkg('hdf5') 94614209Sandreas.sandberg@arm.com 94714209Sandreas.sandberg@arm.com# Check if the HDF5 libraries can be found. This check respects the 94814209Sandreas.sandberg@arm.com# include path and library path provided by pkg-config. We perform 94914209Sandreas.sandberg@arm.com# this check even if there isn't a pkg-config configuration for hdf5 95014209Sandreas.sandberg@arm.com# since some installations don't use pkg-config. 95114209Sandreas.sandberg@arm.comhave_hdf5 = check_hdf5() 95214209Sandreas.sandberg@arm.comif not have_hdf5: 95314209Sandreas.sandberg@arm.com print("Warning: Couldn't find any HDF5 C++ libraries. Disabling") 95414209Sandreas.sandberg@arm.com print(" HDF5 support.") 9559986Sandreas@sandberg.pp.se 9565863Snate@binkert.org###################################################################### 9575863Snate@binkert.org# 9585863Snate@binkert.org# Finish the configuration 9595863Snate@binkert.org# 9606121Snate@binkert.orgmain = conf.Finish() 9611858SN/A 9625863Snate@binkert.org###################################################################### 9635863Snate@binkert.org# 9645863Snate@binkert.org# Collect all non-global variables 9655863Snate@binkert.org# 9665863Snate@binkert.org 9672139SN/A# Define the universe of supported ISAs 9684202Sbinkertn@umich.eduall_isa_list = [ ] 96911308Santhony.gutierrez@amd.comall_gpu_isa_list = [ ] 9704202Sbinkertn@umich.eduExport('all_isa_list') 97111308Santhony.gutierrez@amd.comExport('all_gpu_isa_list') 9722139SN/A 9736994Snate@binkert.orgclass CpuModel(object): 9746994Snate@binkert.org '''The CpuModel class encapsulates everything the ISA parser needs to 9756994Snate@binkert.org know about a particular CPU model.''' 9766994Snate@binkert.org 9776994Snate@binkert.org # Dict of available CPU model objects. Accessible as CpuModel.dict. 9786994Snate@binkert.org dict = {} 9796994Snate@binkert.org 9806994Snate@binkert.org # Constructor. Automatically adds models to CpuModel.dict. 98110319SAndreas.Sandberg@ARM.com def __init__(self, name, default=False): 9826994Snate@binkert.org self.name = name # name of model 9836994Snate@binkert.org 9846994Snate@binkert.org # This cpu is enabled by default 9856994Snate@binkert.org self.default = default 9866994Snate@binkert.org 9876994Snate@binkert.org # Add self to dict 9886994Snate@binkert.org if name in CpuModel.dict: 9896994Snate@binkert.org raise AttributeError, "CpuModel '%s' already registered" % name 9906994Snate@binkert.org CpuModel.dict[name] = self 9916994Snate@binkert.org 9926994Snate@binkert.orgExport('CpuModel') 9932155SN/A 9945863Snate@binkert.org# Sticky variables get saved in the variables file so they persist from 9951869SN/A# one invocation to the next (unless overridden, in which case the new 9961869SN/A# value becomes sticky). 9975863Snate@binkert.orgsticky_vars = Variables(args=ARGUMENTS) 9985863Snate@binkert.orgExport('sticky_vars') 9994202Sbinkertn@umich.edu 10006108Snate@binkert.org# Sticky variables that should be exported 10016108Snate@binkert.orgexport_vars = [] 10026108Snate@binkert.orgExport('export_vars') 10036108Snate@binkert.org 10049219Spower.jg@gmail.com# For Ruby 10059219Spower.jg@gmail.comall_protocols = [] 10069219Spower.jg@gmail.comExport('all_protocols') 10079219Spower.jg@gmail.comprotocol_dirs = [] 10089219Spower.jg@gmail.comExport('protocol_dirs') 10099219Spower.jg@gmail.comslicc_includes = [] 10109219Spower.jg@gmail.comExport('slicc_includes') 10119219Spower.jg@gmail.com 10124202Sbinkertn@umich.edu# Walk the tree and execute all SConsopts scripts that wil add to the 10135863Snate@binkert.org# above variables 101410135SCurtis.Dunham@arm.comif GetOption('verbose'): 101512563Sgabeblack@google.com print("Reading SConsopts") 10165742Snate@binkert.orgfor bdir in [ base_dir ] + extras_dir_list: 10178268Ssteve.reinhardt@amd.com if not isdir(bdir): 101812563Sgabeblack@google.com print("Error: directory '%s' does not exist" % bdir) 10198268Ssteve.reinhardt@amd.com Exit(1) 10205742Snate@binkert.org for root, dirs, files in os.walk(bdir): 10215341Sstever@gmail.com if 'SConsopts' in files: 10228474Sgblack@eecs.umich.edu if GetOption('verbose'): 102312563Sgabeblack@google.com print("Reading", joinpath(root, 'SConsopts')) 10245342Sstever@gmail.com SConscript(joinpath(root, 'SConsopts')) 10254202Sbinkertn@umich.edu 10264202Sbinkertn@umich.eduall_isa_list.sort() 102711308Santhony.gutierrez@amd.comall_gpu_isa_list.sort() 10284202Sbinkertn@umich.edu 10295863Snate@binkert.orgsticky_vars.AddVariables( 10305863Snate@binkert.org EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 103111308Santhony.gutierrez@amd.com EnumVariable('TARGET_GPU_ISA', 'Target GPU ISA', 'hsail', all_gpu_isa_list), 10326994Snate@binkert.org ListVariable('CPU_MODELS', 'CPU models', 10336994Snate@binkert.org sorted(n for n,m in CpuModel.dict.iteritems() if m.default), 103410319SAndreas.Sandberg@ARM.com sorted(CpuModel.dict.keys())), 10355863Snate@binkert.org BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 10365863Snate@binkert.org False), 10375863Snate@binkert.org BoolVariable('SS_COMPATIBLE_FP', 10385863Snate@binkert.org 'Make floating-point results compatible with SimpleScalar', 10395863Snate@binkert.org False), 10405863Snate@binkert.org BoolVariable('USE_SSE2', 10415863Snate@binkert.org 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 10425863Snate@binkert.org False), 10437840Snate@binkert.org BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), 10445863Snate@binkert.org BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 104512230Sgiacomo.travaglini@arm.com BoolVariable('USE_PNG', 'Enable support for PNG images', have_png), 104612230Sgiacomo.travaglini@arm.com BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', 104712230Sgiacomo.travaglini@arm.com False), 104812230Sgiacomo.travaglini@arm.com BoolVariable('USE_KVM', 'Enable hardware virtualized (KVM) CPU models', 104912230Sgiacomo.travaglini@arm.com have_kvm), 105012056Sgabeblack@google.com BoolVariable('USE_TUNTAP', 105112056Sgabeblack@google.com 'Enable using a tap device to bridge to the host network', 105212056Sgabeblack@google.com have_tuntap), 105311308Santhony.gutierrez@amd.com BoolVariable('BUILD_GPU', 'Build the compute-GPU model', False), 10549219Spower.jg@gmail.com EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None', 10559219Spower.jg@gmail.com all_protocols), 105611235Sandreas.sandberg@arm.com EnumVariable('BACKTRACE_IMPL', 'Post-mortem dump implementation', 105714037Sjohnathan.alsop@amd.com backtrace_impls[-1], backtrace_impls), 105814037Sjohnathan.alsop@amd.com ('NUMBER_BITS_PER_SET', 'Max elements in set (default 64)', 105914037Sjohnathan.alsop@amd.com 64), 106014209Sandreas.sandberg@arm.com BoolVariable('USE_HDF5', 'Enable the HDF5 support', have_hdf5), 10611869SN/A ) 10621858SN/A 10635863Snate@binkert.org# These variables get exported to #defines in config/*.hh (see src/SConscript). 106411308Santhony.gutierrez@amd.comexport_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 'TARGET_ISA', 'TARGET_GPU_ISA', 106512061Sjason@lowepower.com 'CP_ANNOTATE', 'USE_POSIX_CLOCK', 'USE_KVM', 'USE_TUNTAP', 106612920Sgabeblack@google.com 'PROTOCOL', 'HAVE_PROTOBUF', 'HAVE_VALGRIND', 106714037Sjohnathan.alsop@amd.com 'HAVE_PERF_ATTR_EXCLUDE_HOST', 'USE_PNG', 106814209Sandreas.sandberg@arm.com 'NUMBER_BITS_PER_SET', 'USE_HDF5'] 10691858SN/A 1070955SN/A################################################### 1071955SN/A# 10721869SN/A# Define a SCons builder for configuration flag headers. 10731869SN/A# 10741869SN/A################################################### 10751869SN/A 10761869SN/A# This function generates a config header file that #defines the 10775863Snate@binkert.org# variable symbol to the current variable setting (0 or 1). The source 10785863Snate@binkert.org# operands are the name of the variable and a Value node containing the 10795863Snate@binkert.org# value of the variable. 10801869SN/Adef build_config_file(target, source, env): 10815863Snate@binkert.org (variable, value) = [s.get_contents() for s in source] 10821869SN/A f = file(str(target[0]), 'w') 108312563Sgabeblack@google.com print('#define', variable, value, file=f) 10841869SN/A f.close() 10851869SN/A return None 10861869SN/A 10871869SN/A# Combine the two functions into a scons Action object. 10888483Sgblack@eecs.umich.educonfig_action = MakeAction(build_config_file, Transform("CONFIG H", 2)) 10891869SN/A 10901869SN/A# The emitter munges the source & target node lists to reflect what 10911869SN/A# we're really doing. 10921869SN/Adef config_emitter(target, source, env): 10935863Snate@binkert.org # extract variable name from Builder arg 10945863Snate@binkert.org variable = str(target[0]) 10951869SN/A # True target is config header file 10965863Snate@binkert.org target = joinpath('config', variable.lower() + '.hh') 10975863Snate@binkert.org val = env[variable] 10983356Sbinkertn@umich.edu if isinstance(val, bool): 10993356Sbinkertn@umich.edu # Force value to 0/1 11003356Sbinkertn@umich.edu val = int(val) 11013356Sbinkertn@umich.edu elif isinstance(val, str): 11023356Sbinkertn@umich.edu val = '"' + val + '"' 11034781Snate@binkert.org 11045863Snate@binkert.org # Sources are variable name & value (packaged in SCons Value nodes) 11055863Snate@binkert.org return ([target], [Value(variable), Value(val)]) 11061869SN/A 11071869SN/Aconfig_builder = Builder(emitter = config_emitter, action = config_action) 11081869SN/A 11096121Snate@binkert.orgmain.Append(BUILDERS = { 'ConfigFile' : config_builder }) 11101869SN/A 111111982Sgabeblack@google.com################################################### 111211982Sgabeblack@google.com# 111311982Sgabeblack@google.com# Builders for static and shared partially linked object files. 111411982Sgabeblack@google.com# 111511982Sgabeblack@google.com################################################### 111611982Sgabeblack@google.com 111711982Sgabeblack@google.compartial_static_builder = Builder(action=SCons.Defaults.LinkAction, 111811982Sgabeblack@google.com src_suffix='$OBJSUFFIX', 111911982Sgabeblack@google.com src_builder=['StaticObject', 'Object'], 112011982Sgabeblack@google.com LINKFLAGS='$PLINKFLAGS', 112111982Sgabeblack@google.com LIBS='') 112211982Sgabeblack@google.com 112311982Sgabeblack@google.comdef partial_shared_emitter(target, source, env): 112411982Sgabeblack@google.com for tgt in target: 112511982Sgabeblack@google.com tgt.attributes.shared = 1 112611982Sgabeblack@google.com return (target, source) 112711982Sgabeblack@google.compartial_shared_builder = Builder(action=SCons.Defaults.ShLinkAction, 112811982Sgabeblack@google.com emitter=partial_shared_emitter, 112911982Sgabeblack@google.com src_suffix='$SHOBJSUFFIX', 113011982Sgabeblack@google.com src_builder='SharedObject', 113111982Sgabeblack@google.com SHLINKFLAGS='$PSHLINKFLAGS', 113211982Sgabeblack@google.com LIBS='') 113311982Sgabeblack@google.com 113411982Sgabeblack@google.commain.Append(BUILDERS = { 'PartialShared' : partial_shared_builder, 113511982Sgabeblack@google.com 'PartialStatic' : partial_static_builder }) 113611982Sgabeblack@google.com 113713706Sgabeblack@google.comdef add_local_rpath(env, *targets): 113813706Sgabeblack@google.com '''Set up an RPATH for a library which lives in the build directory. 113913706Sgabeblack@google.com 114013706Sgabeblack@google.com The construction environment variable BIN_RPATH_PREFIX should be set to 114113706Sgabeblack@google.com the relative path of the build directory starting from the location of the 114213706Sgabeblack@google.com binary.''' 114313706Sgabeblack@google.com for target in targets: 114413706Sgabeblack@google.com target = env.Entry(target) 114513758Sgabeblack@google.com if not isinstance(target, SCons.Node.FS.Dir): 114613706Sgabeblack@google.com target = target.dir 114713706Sgabeblack@google.com relpath = os.path.relpath(target.abspath, env['BUILDDIR']) 114813706Sgabeblack@google.com components = [ 114913706Sgabeblack@google.com '\\$$ORIGIN', 115013706Sgabeblack@google.com '${BIN_RPATH_PREFIX}', 115113706Sgabeblack@google.com relpath 115213706Sgabeblack@google.com ] 115313706Sgabeblack@google.com env.Append(RPATH=[env.Literal(os.path.join(*components))]) 115413706Sgabeblack@google.com 115513713SAndrea.Mondelli@ucf.eduif sys.platform != "darwin": 115613713SAndrea.Mondelli@ucf.edu main.Append(LINKFLAGS=Split('-z origin')) 115713713SAndrea.Mondelli@ucf.edu 115813706Sgabeblack@google.commain.AddMethod(add_local_rpath, 'AddLocalRPATH') 115913706Sgabeblack@google.com 116011978Sgabeblack@google.com# builds in ext are shared across all configs in the build root. 116111978Sgabeblack@google.comext_dir = abspath(joinpath(str(main.root), 'ext')) 116212034Sgabeblack@google.comext_build_dirs = [] 116311978Sgabeblack@google.comfor root, dirs, files in os.walk(ext_dir): 116411978Sgabeblack@google.com if 'SConscript' in files: 116511978Sgabeblack@google.com build_dir = os.path.relpath(root, ext_dir) 116612034Sgabeblack@google.com ext_build_dirs.append(build_dir) 116711978Sgabeblack@google.com main.SConscript(joinpath(root, 'SConscript'), 116811978Sgabeblack@google.com variant_dir=joinpath(build_root, build_dir)) 116910915Sandreas.sandberg@arm.com 117013577Sciro.santilli@arm.comgdb_xml_dir = joinpath(ext_dir, 'gdb-xml') 117113577Sciro.santilli@arm.comExport('gdb_xml_dir') 117213577Sciro.santilli@arm.com 117311986Sandreas.sandberg@arm.commain.Prepend(CPPPATH=Dir('ext/pybind11/include/')) 117411986Sandreas.sandberg@arm.com 11751869SN/A################################################### 11761869SN/A# 117712015Sgabeblack@google.com# This builder and wrapper method are used to set up a directory with 117812015Sgabeblack@google.com# switching headers. Those are headers which are in a generic location and 117912015Sgabeblack@google.com# that include more specific headers from a directory chosen at build time 118012015Sgabeblack@google.com# based on the current build settings. 11813546Sgblack@eecs.umich.edu# 11823546Sgblack@eecs.umich.edu################################################### 11833546Sgblack@eecs.umich.edu 118412015Sgabeblack@google.comdef build_switching_header(target, source, env): 118512015Sgabeblack@google.com path = str(target[0]) 118612015Sgabeblack@google.com subdir = str(source[0]) 118712015Sgabeblack@google.com dp, fp = os.path.split(path) 118812015Sgabeblack@google.com dp = os.path.relpath(os.path.realpath(dp), 118912015Sgabeblack@google.com os.path.realpath(env['BUILDDIR'])) 119012015Sgabeblack@google.com with open(path, 'w') as hdr: 119112563Sgabeblack@google.com print('#include "%s/%s/%s"' % (dp, subdir, fp), file=hdr) 11923546Sgblack@eecs.umich.edu 119312015Sgabeblack@google.comswitching_header_action = MakeAction(build_switching_header, 119412015Sgabeblack@google.com Transform('GENERATE')) 119510196SCurtis.Dunham@arm.com 119612015Sgabeblack@google.comswitching_header_builder = Builder(action=switching_header_action, 119712015Sgabeblack@google.com source_factory=Value, 119812015Sgabeblack@google.com single_source=True) 119912015Sgabeblack@google.com 120012015Sgabeblack@google.commain.Append(BUILDERS = { 'SwitchingHeader': switching_header_builder }) 120112015Sgabeblack@google.com 120212015Sgabeblack@google.comdef switching_headers(self, headers, source): 120312015Sgabeblack@google.com for header in headers: 120412015Sgabeblack@google.com self.SwitchingHeader(header, source) 120512015Sgabeblack@google.com 120612015Sgabeblack@google.commain.AddMethod(switching_headers, 'SwitchingHeaders') 12073546Sgblack@eecs.umich.edu 12083546Sgblack@eecs.umich.edu################################################### 12093546Sgblack@eecs.umich.edu# 1210955SN/A# Define build environments for selected configurations. 1211955SN/A# 1212955SN/A################################################### 1213955SN/A 12145863Snate@binkert.orgfor variant_path in variant_paths: 121510135SCurtis.Dunham@arm.com if not GetOption('silent'): 121612563Sgabeblack@google.com print("Building in", variant_path) 12175343Sstever@gmail.com 12185343Sstever@gmail.com # Make a copy of the build-root environment to use for this config. 12196121Snate@binkert.org env = main.Clone() 12205863Snate@binkert.org env['BUILDDIR'] = variant_path 12214773Snate@binkert.org 12225863Snate@binkert.org # variant_dir is the tail component of build path, and is used to 12232632Sstever@eecs.umich.edu # determine the build parameters (e.g., 'ALPHA_SE') 12245863Snate@binkert.org (build_root, variant_dir) = splitpath(variant_path) 12252023SN/A 12265863Snate@binkert.org # Set env variables according to the build directory config. 12275863Snate@binkert.org sticky_vars.files = [] 12285863Snate@binkert.org # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 12295863Snate@binkert.org # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 12305863Snate@binkert.org # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 12315863Snate@binkert.org current_vars_file = joinpath(build_root, 'variables', variant_dir) 12325863Snate@binkert.org if isfile(current_vars_file): 12335863Snate@binkert.org sticky_vars.files.append(current_vars_file) 123410135SCurtis.Dunham@arm.com if not GetOption('silent'): 123512563Sgabeblack@google.com print("Using saved variables file %s" % current_vars_file) 123612034Sgabeblack@google.com elif variant_dir in ext_build_dirs: 123712034Sgabeblack@google.com # Things in ext are built without a variant directory. 123812034Sgabeblack@google.com continue 12392632Sstever@eecs.umich.edu else: 12405863Snate@binkert.org # Build dir-specific variables file doesn't exist. 12412023SN/A 12422632Sstever@eecs.umich.edu # Make sure the directory is there so we can create it later 12435863Snate@binkert.org opt_dir = dirname(current_vars_file) 12445342Sstever@gmail.com if not isdir(opt_dir): 12455863Snate@binkert.org mkdir(opt_dir) 12462632Sstever@eecs.umich.edu 12475863Snate@binkert.org # Get default build variables from source tree. Variables are 12485863Snate@binkert.org # normally determined by name of $VARIANT_DIR, but can be 12498267Ssteve.reinhardt@amd.com # overridden by '--default=' arg on command line. 12508120Sgblack@eecs.umich.edu default = GetOption('default') 12518267Ssteve.reinhardt@amd.com opts_dir = joinpath(main.root.abspath, 'build_opts') 12528267Ssteve.reinhardt@amd.com if default: 12538267Ssteve.reinhardt@amd.com default_vars_files = [joinpath(build_root, 'variables', default), 12548267Ssteve.reinhardt@amd.com joinpath(opts_dir, default)] 12558267Ssteve.reinhardt@amd.com else: 12568267Ssteve.reinhardt@amd.com default_vars_files = [joinpath(opts_dir, variant_dir)] 12578267Ssteve.reinhardt@amd.com existing_files = filter(isfile, default_vars_files) 12588267Ssteve.reinhardt@amd.com if existing_files: 12598267Ssteve.reinhardt@amd.com default_vars_file = existing_files[0] 12605863Snate@binkert.org sticky_vars.files.append(default_vars_file) 126112563Sgabeblack@google.com print("Variables file %s not found,\n using defaults in %s" 126212563Sgabeblack@google.com % (current_vars_file, default_vars_file)) 12632632Sstever@eecs.umich.edu else: 126412563Sgabeblack@google.com print("Error: cannot find variables file %s or " 126512563Sgabeblack@google.com "default file(s) %s" 126612563Sgabeblack@google.com % (current_vars_file, ' or '.join(default_vars_files))) 12672632Sstever@eecs.umich.edu Exit(1) 12681888SN/A 12695863Snate@binkert.org # Apply current variable settings to env 12705863Snate@binkert.org sticky_vars.Update(env) 12711858SN/A 12728120Sgblack@eecs.umich.edu help_texts["local_vars"] += \ 12738120Sgblack@eecs.umich.edu "Build variables for %s:\n" % variant_dir \ 12747756SAli.Saidi@ARM.com + sticky_vars.GenerateHelpText(env) 12752598SN/A 12765863Snate@binkert.org # Process variable settings. 12771858SN/A 12781858SN/A if not have_fenv and env['USE_FENV']: 127912563Sgabeblack@google.com print("Warning: <fenv.h> not available; " 128012563Sgabeblack@google.com "forcing USE_FENV to False in", variant_dir + ".") 12811858SN/A env['USE_FENV'] = False 12821858SN/A 12831858SN/A if not env['USE_FENV']: 128412563Sgabeblack@google.com print("Warning: No IEEE FP rounding mode control in", 128512563Sgabeblack@google.com variant_dir + ".") 128612563Sgabeblack@google.com print(" FP results may deviate slightly from other platforms.") 12871858SN/A 128812230Sgiacomo.travaglini@arm.com if not have_png and env['USE_PNG']: 128912563Sgabeblack@google.com print("Warning: <png.h> not available; " 129012563Sgabeblack@google.com "forcing USE_PNG to False in", variant_dir + ".") 129112230Sgiacomo.travaglini@arm.com env['USE_PNG'] = False 129212230Sgiacomo.travaglini@arm.com 129312230Sgiacomo.travaglini@arm.com if env['USE_PNG']: 129412230Sgiacomo.travaglini@arm.com env.Append(LIBS=['png']) 129512230Sgiacomo.travaglini@arm.com 12961858SN/A if env['EFENCE']: 12971858SN/A env.Append(LIBS=['efence']) 12981858SN/A 12999651SAndreas.Sandberg@ARM.com if env['USE_KVM']: 13009651SAndreas.Sandberg@ARM.com if not have_kvm: 130112563Sgabeblack@google.com print("Warning: Can not enable KVM, host seems to " 130212563Sgabeblack@google.com "lack KVM support") 13039651SAndreas.Sandberg@ARM.com env['USE_KVM'] = False 13049651SAndreas.Sandberg@ARM.com elif not is_isa_kvm_compatible(env['TARGET_ISA']): 130512563Sgabeblack@google.com print("Info: KVM support disabled due to unsupported host and " 130612563Sgabeblack@google.com "target ISA combination") 13079651SAndreas.Sandberg@ARM.com env['USE_KVM'] = False 13089651SAndreas.Sandberg@ARM.com 130912056Sgabeblack@google.com if env['USE_TUNTAP']: 131012056Sgabeblack@google.com if not have_tuntap: 131112563Sgabeblack@google.com print("Warning: Can't connect EtherTap with a tap device.") 131212056Sgabeblack@google.com env['USE_TUNTAP'] = False 131312056Sgabeblack@google.com 131411798Santhony.gutierrez@amd.com if env['BUILD_GPU']: 131511798Santhony.gutierrez@amd.com env.Append(CPPDEFINES=['BUILD_GPU']) 131611798Santhony.gutierrez@amd.com 13179986Sandreas@sandberg.pp.se # Warn about missing optional functionality 13189986Sandreas@sandberg.pp.se if env['USE_KVM']: 13199986Sandreas@sandberg.pp.se if not main['HAVE_PERF_ATTR_EXCLUDE_HOST']: 132012563Sgabeblack@google.com print("Warning: perf_event headers lack support for the " 132112563Sgabeblack@google.com "exclude_host attribute. KVM instruction counts will " 132212563Sgabeblack@google.com "be inaccurate.") 13239986Sandreas@sandberg.pp.se 13245863Snate@binkert.org # Save sticky variable settings back to current variables file 13255863Snate@binkert.org sticky_vars.Save(current_vars_file, env) 13261869SN/A 13271965SN/A if env['USE_SSE2']: 13287739Sgblack@eecs.umich.edu env.Append(CCFLAGS=['-msse2']) 13291965SN/A 133014044Sciro.santilli@arm.com env.Append(CCFLAGS='$CCFLAGS_EXTRA') 133114044Sciro.santilli@arm.com env.Append(LINKFLAGS='$LDFLAGS_EXTRA') 133214044Sciro.santilli@arm.com 13332761Sstever@eecs.umich.edu # The src/SConscript file sets up the build rules in 'env' according 13345863Snate@binkert.org # to the configured variables. It returns a list of environments, 13351869SN/A # one for each variant build (debug, opt, etc.) 133610196SCurtis.Dunham@arm.com SConscript('src/SConscript', variant_dir = variant_path, exports = 'env') 13371869SN/A 13388120Sgblack@eecs.umich.edu# base help text 13398120Sgblack@eecs.umich.eduHelp(''' 13408120Sgblack@eecs.umich.eduUsage: scons [scons options] [build variables] [target(s)] 13418120Sgblack@eecs.umich.edu 13428120Sgblack@eecs.umich.eduExtra scons options: 13438120Sgblack@eecs.umich.edu%(options)s 13448120Sgblack@eecs.umich.edu 13458120Sgblack@eecs.umich.eduGlobal build variables: 13468120Sgblack@eecs.umich.edu%(global_vars)s 13478120Sgblack@eecs.umich.edu 13488120Sgblack@eecs.umich.edu%(local_vars)s 13498120Sgblack@eecs.umich.edu''' % help_texts) 1350