SConstruct revision 12246
1955SN/A# -*- mode:python -*- 2955SN/A 312230Sgiacomo.travaglini@arm.com# Copyright (c) 2013, 2015-2017 ARM Limited 49812Sandreas.hansson@arm.com# All rights reserved. 59812Sandreas.hansson@arm.com# 69812Sandreas.hansson@arm.com# The license below extends only to copyright in the software and shall 79812Sandreas.hansson@arm.com# not be construed as granting a license to any other intellectual 89812Sandreas.hansson@arm.com# property including but not limited to intellectual property relating 99812Sandreas.hansson@arm.com# to a hardware implementation of the functionality of the software 109812Sandreas.hansson@arm.com# licensed hereunder. You may use the software subject to the license 119812Sandreas.hansson@arm.com# terms below provided that you ensure that this notice is replicated 129812Sandreas.hansson@arm.com# unmodified and in its entirety in all distributions of the software, 139812Sandreas.hansson@arm.com# modified or unmodified, in source code or in binary form. 149812Sandreas.hansson@arm.com# 157816Ssteve.reinhardt@amd.com# Copyright (c) 2011 Advanced Micro Devices, Inc. 165871Snate@binkert.org# Copyright (c) 2009 The Hewlett-Packard Development Company 171762SN/A# Copyright (c) 2004-2005 The Regents of The University of Michigan 18955SN/A# All rights reserved. 19955SN/A# 20955SN/A# Redistribution and use in source and binary forms, with or without 21955SN/A# modification, are permitted provided that the following conditions are 22955SN/A# met: redistributions of source code must retain the above copyright 23955SN/A# notice, this list of conditions and the following disclaimer; 24955SN/A# redistributions in binary form must reproduce the above copyright 25955SN/A# notice, this list of conditions and the following disclaimer in the 26955SN/A# documentation and/or other materials provided with the distribution; 27955SN/A# neither the name of the copyright holders nor the names of its 28955SN/A# contributors may be used to endorse or promote products derived from 29955SN/A# this software without specific prior written permission. 30955SN/A# 31955SN/A# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32955SN/A# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33955SN/A# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 34955SN/A# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35955SN/A# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 36955SN/A# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 37955SN/A# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 38955SN/A# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 39955SN/A# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 40955SN/A# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 41955SN/A# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 422665Ssaidi@eecs.umich.edu# 432665Ssaidi@eecs.umich.edu# Authors: Steve Reinhardt 445863Snate@binkert.org# Nathan Binkert 45955SN/A 46955SN/A################################################### 47955SN/A# 48955SN/A# SCons top-level build description (SConstruct) file. 49955SN/A# 508878Ssteve.reinhardt@amd.com# While in this directory ('gem5'), just type 'scons' to build the default 512632Sstever@eecs.umich.edu# configuration (see below), or type 'scons build/<CONFIG>/<binary>' 528878Ssteve.reinhardt@amd.com# to build some other configuration (e.g., 'build/ALPHA/gem5.opt' for 532632Sstever@eecs.umich.edu# the optimized full-system version). 54955SN/A# 558878Ssteve.reinhardt@amd.com# You can build gem5 in a different directory as long as there is a 562632Sstever@eecs.umich.edu# 'build/<CONFIG>' somewhere along the target path. The build system 572761Sstever@eecs.umich.edu# expects that all configs under the same build directory are being 582632Sstever@eecs.umich.edu# built for the same host system. 592632Sstever@eecs.umich.edu# 602632Sstever@eecs.umich.edu# Examples: 612761Sstever@eecs.umich.edu# 622761Sstever@eecs.umich.edu# The following two commands are equivalent. The '-u' option tells 632761Sstever@eecs.umich.edu# scons to search up the directory tree for this SConstruct file. 648878Ssteve.reinhardt@amd.com# % cd <path-to-src>/gem5 ; scons build/ALPHA/gem5.debug 658878Ssteve.reinhardt@amd.com# % cd <path-to-src>/gem5/build/ALPHA; scons -u gem5.debug 662761Sstever@eecs.umich.edu# 672761Sstever@eecs.umich.edu# The following two commands are equivalent and demonstrate building 682761Sstever@eecs.umich.edu# in a directory outside of the source tree. The '-C' option tells 692761Sstever@eecs.umich.edu# scons to chdir to the specified directory to find this SConstruct 702761Sstever@eecs.umich.edu# file. 718878Ssteve.reinhardt@amd.com# % cd <path-to-src>/gem5 ; scons /local/foo/build/ALPHA/gem5.debug 728878Ssteve.reinhardt@amd.com# % cd /local/foo/build/ALPHA; scons -C <path-to-src>/gem5 gem5.debug 732632Sstever@eecs.umich.edu# 742632Sstever@eecs.umich.edu# You can use 'scons -H' to print scons options. If you're in this 758878Ssteve.reinhardt@amd.com# 'gem5' directory (or use -u or -C to tell scons where to find this 768878Ssteve.reinhardt@amd.com# file), you can use 'scons -h' to print all the gem5-specific build 772632Sstever@eecs.umich.edu# options as well. 78955SN/A# 79955SN/A################################################### 80955SN/A 816654Snate@binkert.org# Global Python includes 8210196SCurtis.Dunham@arm.comimport itertools 83955SN/Aimport os 845396Ssaidi@eecs.umich.eduimport re 8511401Sandreas.sandberg@arm.comimport shutil 865863Snate@binkert.orgimport subprocess 875863Snate@binkert.orgimport sys 884202Sbinkertn@umich.edu 895863Snate@binkert.orgfrom os import mkdir, environ 905863Snate@binkert.orgfrom os.path import abspath, basename, dirname, expanduser, normpath 915863Snate@binkert.orgfrom os.path import exists, isdir, isfile 925863Snate@binkert.orgfrom os.path import join as joinpath, split as splitpath 93955SN/A 946654Snate@binkert.org# SCons includes 955273Sstever@gmail.comimport SCons 965871Snate@binkert.orgimport SCons.Node 975273Sstever@gmail.com 986654Snate@binkert.orgfrom m5.util import compareVersions, readCommand 995396Ssaidi@eecs.umich.edu 1008120Sgblack@eecs.umich.eduhelp_texts = { 1018120Sgblack@eecs.umich.edu "options" : "", 1028120Sgblack@eecs.umich.edu "global_vars" : "", 1038120Sgblack@eecs.umich.edu "local_vars" : "" 1048120Sgblack@eecs.umich.edu} 1058120Sgblack@eecs.umich.edu 1068120Sgblack@eecs.umich.eduExport("help_texts") 1078120Sgblack@eecs.umich.edu 1088879Ssteve.reinhardt@amd.com 1098879Ssteve.reinhardt@amd.com# There's a bug in scons in that (1) by default, the help texts from 1108879Ssteve.reinhardt@amd.com# AddOption() are supposed to be displayed when you type 'scons -h' 1118879Ssteve.reinhardt@amd.com# and (2) you can override the help displayed by 'scons -h' using the 1128879Ssteve.reinhardt@amd.com# Help() function, but these two features are incompatible: once 1138879Ssteve.reinhardt@amd.com# you've overridden the help text using Help(), there's no way to get 1148879Ssteve.reinhardt@amd.com# at the help texts from AddOptions. See: 1158879Ssteve.reinhardt@amd.com# http://scons.tigris.org/issues/show_bug.cgi?id=2356 1168879Ssteve.reinhardt@amd.com# http://scons.tigris.org/issues/show_bug.cgi?id=2611 1178879Ssteve.reinhardt@amd.com# This hack lets us extract the help text from AddOptions and 1188879Ssteve.reinhardt@amd.com# re-inject it via Help(). Ideally someday this bug will be fixed and 1198879Ssteve.reinhardt@amd.com# we can just use AddOption directly. 1208879Ssteve.reinhardt@amd.comdef AddLocalOption(*args, **kwargs): 1218120Sgblack@eecs.umich.edu col_width = 30 1228120Sgblack@eecs.umich.edu 1238120Sgblack@eecs.umich.edu help = " " + ", ".join(args) 1248120Sgblack@eecs.umich.edu if "help" in kwargs: 1258120Sgblack@eecs.umich.edu length = len(help) 1268120Sgblack@eecs.umich.edu if length >= col_width: 1278120Sgblack@eecs.umich.edu help += "\n" + " " * col_width 1288120Sgblack@eecs.umich.edu else: 1298120Sgblack@eecs.umich.edu help += " " * (col_width - length) 1308120Sgblack@eecs.umich.edu help += kwargs["help"] 1318120Sgblack@eecs.umich.edu help_texts["options"] += help + "\n" 1328120Sgblack@eecs.umich.edu 1338120Sgblack@eecs.umich.edu AddOption(*args, **kwargs) 1348120Sgblack@eecs.umich.edu 1358879Ssteve.reinhardt@amd.comAddLocalOption('--colors', dest='use_colors', action='store_true', 1368879Ssteve.reinhardt@amd.com help="Add color to abbreviated scons output") 1378879Ssteve.reinhardt@amd.comAddLocalOption('--no-colors', dest='use_colors', action='store_false', 1388879Ssteve.reinhardt@amd.com help="Don't add color to abbreviated scons output") 13910458Sandreas.hansson@arm.comAddLocalOption('--with-cxx-config', dest='with_cxx_config', 14010458Sandreas.hansson@arm.com action='store_true', 14110458Sandreas.hansson@arm.com help="Build with support for C++-based configuration") 1428879Ssteve.reinhardt@amd.comAddLocalOption('--default', dest='default', type='string', action='store', 1438879Ssteve.reinhardt@amd.com help='Override which build_opts file to use for defaults') 1448879Ssteve.reinhardt@amd.comAddLocalOption('--ignore-style', dest='ignore_style', action='store_true', 1458879Ssteve.reinhardt@amd.com help='Disable style checking hooks') 1469227Sandreas.hansson@arm.comAddLocalOption('--no-lto', dest='no_lto', action='store_true', 1479227Sandreas.hansson@arm.com help='Disable Link-Time Optimization for fast') 14812063Sgabeblack@google.comAddLocalOption('--force-lto', dest='force_lto', action='store_true', 14912063Sgabeblack@google.com help='Use Link-Time Optimization instead of partial linking' + 15012063Sgabeblack@google.com ' when the compiler doesn\'t support using them together.') 1518879Ssteve.reinhardt@amd.comAddLocalOption('--update-ref', dest='update_ref', action='store_true', 1528879Ssteve.reinhardt@amd.com help='Update test reference outputs') 1538879Ssteve.reinhardt@amd.comAddLocalOption('--verbose', dest='verbose', action='store_true', 1548879Ssteve.reinhardt@amd.com help='Print full tool command lines') 15510453SAndrew.Bardsley@arm.comAddLocalOption('--without-python', dest='without_python', 15610453SAndrew.Bardsley@arm.com action='store_true', 15710453SAndrew.Bardsley@arm.com help='Build without Python configuration support') 15810456SCurtis.Dunham@arm.comAddLocalOption('--without-tcmalloc', dest='without_tcmalloc', 15910456SCurtis.Dunham@arm.com action='store_true', 16010456SCurtis.Dunham@arm.com help='Disable linking against tcmalloc') 16110457Sandreas.hansson@arm.comAddLocalOption('--with-ubsan', dest='with_ubsan', action='store_true', 16210457Sandreas.hansson@arm.com help='Build with Undefined Behavior Sanitizer if available') 16311342Sandreas.hansson@arm.comAddLocalOption('--with-asan', dest='with_asan', action='store_true', 16411342Sandreas.hansson@arm.com help='Build with Address Sanitizer if available') 1658120Sgblack@eecs.umich.edu 16612063Sgabeblack@google.comif GetOption('no_lto') and GetOption('force_lto'): 16712063Sgabeblack@google.com print '--no-lto and --force-lto are mutually exclusive' 16812063Sgabeblack@google.com Exit(1) 16912063Sgabeblack@google.com 1705871Snate@binkert.org######################################################################## 1715871Snate@binkert.org# 1726121Snate@binkert.org# Set up the main build environment. 1735871Snate@binkert.org# 1745871Snate@binkert.org######################################################################## 1759926Sstan.czerniawski@arm.com 17612243Sgabeblack@google.commain = Environment() 1771533SN/A 17812246Sgabeblack@google.comfrom gem5_scons import Transform 17912246Sgabeblack@google.comfrom gem5_scons.util import get_termcap 18012246Sgabeblack@google.comtermcap = get_termcap() 18112246Sgabeblack@google.com 1829239Sandreas.hansson@arm.commain_dict_keys = main.Dictionary().keys() 1839239Sandreas.hansson@arm.com 1849239Sandreas.hansson@arm.com# Check that we have a C/C++ compiler 1859239Sandreas.hansson@arm.comif not ('CC' in main_dict_keys and 'CXX' in main_dict_keys): 1869239Sandreas.hansson@arm.com print "No C++ compiler installed (package g++ on Ubuntu and RedHat)" 1879239Sandreas.hansson@arm.com Exit(1) 1889239Sandreas.hansson@arm.com 189955SN/A################################################### 190955SN/A# 1912632Sstever@eecs.umich.edu# Figure out which configurations to set up based on the path(s) of 1922632Sstever@eecs.umich.edu# the target(s). 193955SN/A# 194955SN/A################################################### 195955SN/A 196955SN/A# Find default configuration & binary. 1978878Ssteve.reinhardt@amd.comDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA/gem5.debug')) 198955SN/A 1992632Sstever@eecs.umich.edu# helper function: find last occurrence of element in list 2002632Sstever@eecs.umich.edudef rfind(l, elt, offs = -1): 2012632Sstever@eecs.umich.edu for i in range(len(l)+offs, 0, -1): 2022632Sstever@eecs.umich.edu if l[i] == elt: 2032632Sstever@eecs.umich.edu return i 2042632Sstever@eecs.umich.edu raise ValueError, "element not found" 2052632Sstever@eecs.umich.edu 2068268Ssteve.reinhardt@amd.com# Take a list of paths (or SCons Nodes) and return a list with all 2078268Ssteve.reinhardt@amd.com# paths made absolute and ~-expanded. Paths will be interpreted 2088268Ssteve.reinhardt@amd.com# relative to the launch directory unless a different root is provided 2098268Ssteve.reinhardt@amd.comdef makePathListAbsolute(path_list, root=GetLaunchDir()): 2108268Ssteve.reinhardt@amd.com return [abspath(joinpath(root, expanduser(str(p)))) 2118268Ssteve.reinhardt@amd.com for p in path_list] 2128268Ssteve.reinhardt@amd.com 2132632Sstever@eecs.umich.edu# Each target must have 'build' in the interior of the path; the 2142632Sstever@eecs.umich.edu# directory below this will determine the build parameters. For 2152632Sstever@eecs.umich.edu# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 2162632Sstever@eecs.umich.edu# recognize that ALPHA_SE specifies the configuration because it 2178268Ssteve.reinhardt@amd.com# follow 'build' in the build path. 2182632Sstever@eecs.umich.edu 2198268Ssteve.reinhardt@amd.com# The funky assignment to "[:]" is needed to replace the list contents 2208268Ssteve.reinhardt@amd.com# in place rather than reassign the symbol to a new list, which 2218268Ssteve.reinhardt@amd.com# doesn't work (obviously!). 2228268Ssteve.reinhardt@amd.comBUILD_TARGETS[:] = makePathListAbsolute(BUILD_TARGETS) 2233718Sstever@eecs.umich.edu 2242634Sstever@eecs.umich.edu# Generate a list of the unique build roots and configs that the 2252634Sstever@eecs.umich.edu# collected targets reference. 2265863Snate@binkert.orgvariant_paths = [] 2272638Sstever@eecs.umich.edubuild_root = None 2288268Ssteve.reinhardt@amd.comfor t in BUILD_TARGETS: 2292632Sstever@eecs.umich.edu path_dirs = t.split('/') 2302632Sstever@eecs.umich.edu try: 2312632Sstever@eecs.umich.edu build_top = rfind(path_dirs, 'build', -2) 2322632Sstever@eecs.umich.edu except: 2332632Sstever@eecs.umich.edu print "Error: no non-leaf 'build' dir found on target path", t 2341858SN/A Exit(1) 2353716Sstever@eecs.umich.edu this_build_root = joinpath('/',*path_dirs[:build_top+1]) 2362638Sstever@eecs.umich.edu if not build_root: 2372638Sstever@eecs.umich.edu build_root = this_build_root 2382638Sstever@eecs.umich.edu else: 2392638Sstever@eecs.umich.edu if this_build_root != build_root: 2402638Sstever@eecs.umich.edu print "Error: build targets not under same build root\n"\ 2412638Sstever@eecs.umich.edu " %s\n %s" % (build_root, this_build_root) 2422638Sstever@eecs.umich.edu Exit(1) 2435863Snate@binkert.org variant_path = joinpath('/',*path_dirs[:build_top+2]) 2445863Snate@binkert.org if variant_path not in variant_paths: 2455863Snate@binkert.org variant_paths.append(variant_path) 246955SN/A 2475341Sstever@gmail.com# Make sure build_root exists (might not if this is the first build there) 2485341Sstever@gmail.comif not isdir(build_root): 2495863Snate@binkert.org mkdir(build_root) 2507756SAli.Saidi@ARM.commain['BUILDROOT'] = build_root 2515341Sstever@gmail.com 2526121Snate@binkert.orgExport('main') 2534494Ssaidi@eecs.umich.edu 2546121Snate@binkert.orgmain.SConsignFile(joinpath(build_root, "sconsign")) 2551105SN/A 2562667Sstever@eecs.umich.edu# Default duplicate option is to use hard links, but this messes up 2572667Sstever@eecs.umich.edu# when you use emacs to edit a file in the target dir, as emacs moves 2582667Sstever@eecs.umich.edu# file to file~ then copies to file, breaking the link. Symbolic 2592667Sstever@eecs.umich.edu# (soft) links work better. 2606121Snate@binkert.orgmain.SetOption('duplicate', 'soft-copy') 2612667Sstever@eecs.umich.edu 2625341Sstever@gmail.com# 2635863Snate@binkert.org# Set up global sticky variables... these are common to an entire build 2645341Sstever@gmail.com# tree (not specific to a particular build like ALPHA_SE) 2655341Sstever@gmail.com# 2665341Sstever@gmail.com 2678120Sgblack@eecs.umich.eduglobal_vars_file = joinpath(build_root, 'variables.global') 2685341Sstever@gmail.com 2698120Sgblack@eecs.umich.eduglobal_vars = Variables(global_vars_file, args=ARGUMENTS) 2705341Sstever@gmail.com 2718120Sgblack@eecs.umich.eduglobal_vars.AddVariables( 2726121Snate@binkert.org ('CC', 'C compiler', environ.get('CC', main['CC'])), 2736121Snate@binkert.org ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 2749396Sandreas.hansson@arm.com ('PROTOC', 'protoc tool', environ.get('PROTOC', 'protoc')), 2755397Ssaidi@eecs.umich.edu ('BATCH', 'Use batch pool for build and tests', False), 2765397Ssaidi@eecs.umich.edu ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 2777727SAli.Saidi@ARM.com ('M5_BUILD_CACHE', 'Cache built objects in this directory', False), 2788268Ssteve.reinhardt@amd.com ('EXTRAS', 'Add extra directories to the compilation', '') 2796168Snate@binkert.org ) 2805341Sstever@gmail.com 2818120Sgblack@eecs.umich.edu# Update main environment with values from ARGUMENTS & global_vars_file 2828120Sgblack@eecs.umich.eduglobal_vars.Update(main) 2838120Sgblack@eecs.umich.eduhelp_texts["global_vars"] += global_vars.GenerateHelpText(main) 2846814Sgblack@eecs.umich.edu 2855863Snate@binkert.org# Save sticky variable settings back to current variables file 2868120Sgblack@eecs.umich.eduglobal_vars.Save(global_vars_file, main) 2875341Sstever@gmail.com 2885863Snate@binkert.org# Parse EXTRAS variable to build list of all directories where we're 2898268Ssteve.reinhardt@amd.com# look for sources etc. This list is exported as extras_dir_list. 2906121Snate@binkert.orgbase_dir = main.srcdir.abspath 2916121Snate@binkert.orgif main['EXTRAS']: 2928268Ssteve.reinhardt@amd.com extras_dir_list = makePathListAbsolute(main['EXTRAS'].split(':')) 2935742Snate@binkert.orgelse: 2945742Snate@binkert.org extras_dir_list = [] 2955341Sstever@gmail.com 2965742Snate@binkert.orgExport('base_dir') 2975742Snate@binkert.orgExport('extras_dir_list') 2985341Sstever@gmail.com 2996017Snate@binkert.org# the ext directory should be on the #includes path 3006121Snate@binkert.orgmain.Append(CPPPATH=[Dir('ext')]) 3016017Snate@binkert.org 30212158Sandreas.sandberg@arm.com# Add shared top-level headers 30312158Sandreas.sandberg@arm.commain.Prepend(CPPPATH=Dir('include')) 30412158Sandreas.sandberg@arm.com 3058120Sgblack@eecs.umich.eduif GetOption('verbose'): 3067756SAli.Saidi@ARM.com def MakeAction(action, string, *args, **kwargs): 3077756SAli.Saidi@ARM.com return Action(action, *args, **kwargs) 3087756SAli.Saidi@ARM.comelse: 3097756SAli.Saidi@ARM.com MakeAction = Action 3107816Ssteve.reinhardt@amd.com main['CCCOMSTR'] = Transform("CC") 3117816Ssteve.reinhardt@amd.com main['CXXCOMSTR'] = Transform("CXX") 3127816Ssteve.reinhardt@amd.com main['ASCOMSTR'] = Transform("AS") 3137816Ssteve.reinhardt@amd.com main['ARCOMSTR'] = Transform("AR", 0) 3147816Ssteve.reinhardt@amd.com main['LINKCOMSTR'] = Transform("LINK", 0) 31511979Sgabeblack@google.com main['SHLINKCOMSTR'] = Transform("SHLINK", 0) 3167816Ssteve.reinhardt@amd.com main['RANLIBCOMSTR'] = Transform("RANLIB", 0) 3177816Ssteve.reinhardt@amd.com main['M4COMSTR'] = Transform("M4") 3187816Ssteve.reinhardt@amd.com main['SHCCCOMSTR'] = Transform("SHCC") 3197816Ssteve.reinhardt@amd.com main['SHCXXCOMSTR'] = Transform("SHCXX") 3207756SAli.Saidi@ARM.comExport('MakeAction') 3217756SAli.Saidi@ARM.com 3229227Sandreas.hansson@arm.com# Initialize the Link-Time Optimization (LTO) flags 3239227Sandreas.hansson@arm.commain['LTO_CCFLAGS'] = [] 3249227Sandreas.hansson@arm.commain['LTO_LDFLAGS'] = [] 3259227Sandreas.hansson@arm.com 3269590Sandreas@sandberg.pp.se# According to the readme, tcmalloc works best if the compiler doesn't 3279590Sandreas@sandberg.pp.se# assume that we're using the builtin malloc and friends. These flags 3289590Sandreas@sandberg.pp.se# are compiler-specific, so we need to set them after we detect which 3299590Sandreas@sandberg.pp.se# compiler we're using. 3309590Sandreas@sandberg.pp.semain['TCMALLOC_CCFLAGS'] = [] 3319590Sandreas@sandberg.pp.se 3326654Snate@binkert.orgCXX_version = readCommand([main['CXX'],'--version'], exception=False) 3336654Snate@binkert.orgCXX_V = readCommand([main['CXX'],'-V'], exception=False) 3345871Snate@binkert.org 3356121Snate@binkert.orgmain['GCC'] = CXX_version and CXX_version.find('g++') >= 0 3368946Sandreas.hansson@arm.commain['CLANG'] = CXX_version and CXX_version.find('clang') >= 0 3379419Sandreas.hansson@arm.comif main['GCC'] + main['CLANG'] > 1: 3383940Ssaidi@eecs.umich.edu print 'Error: How can we have two at the same time?' 3393918Ssaidi@eecs.umich.edu Exit(1) 3403918Ssaidi@eecs.umich.edu 3411858SN/A# Set up default C++ compiler flags 3429556Sandreas.hansson@arm.comif main['GCC'] or main['CLANG']: 3439556Sandreas.hansson@arm.com # As gcc and clang share many flags, do the common parts here 3449556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-pipe']) 3459556Sandreas.hansson@arm.com main.Append(CCFLAGS=['-fno-strict-aliasing']) 34611294Sandreas.hansson@arm.com # Enable -Wall and -Wextra and then disable the few warnings that 34711294Sandreas.hansson@arm.com # we consistently violate 34811294Sandreas.hansson@arm.com main.Append(CCFLAGS=['-Wall', '-Wundef', '-Wextra', 34911294Sandreas.hansson@arm.com '-Wno-sign-compare', '-Wno-unused-parameter']) 35010878Sandreas.hansson@arm.com # We always compile using C++11 35110878Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-std=c++11']) 35211811Sbaz21@cam.ac.uk if sys.platform.startswith('freebsd'): 35311811Sbaz21@cam.ac.uk main.Append(CCFLAGS=['-I/usr/local/include']) 35411811Sbaz21@cam.ac.uk main.Append(CXXFLAGS=['-I/usr/local/include']) 35511982Sgabeblack@google.com 35611982Sgabeblack@google.com main['FILTER_PSHLINKFLAGS'] = lambda x: str(x).replace(' -shared', '') 35711982Sgabeblack@google.com main['PSHLINKFLAGS'] = main.subst('${FILTER_PSHLINKFLAGS(SHLINKFLAGS)}') 35811982Sgabeblack@google.com main['PLINKFLAGS'] = main.subst('${LINKFLAGS}') 35911992Sgabeblack@google.com shared_partial_flags = ['-r', '-nostdlib'] 36011982Sgabeblack@google.com main.Append(PSHLINKFLAGS=shared_partial_flags) 36111982Sgabeblack@google.com main.Append(PLINKFLAGS=shared_partial_flags) 3629556Sandreas.hansson@arm.comelse: 3639556Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 3649556Sandreas.hansson@arm.com print "Don't know what compiler options to use for your compiler." 3659556Sandreas.hansson@arm.com print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 3669556Sandreas.hansson@arm.com print termcap.Yellow + ' version:' + termcap.Normal, 3679556Sandreas.hansson@arm.com if not CXX_version: 3689556Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 3699556Sandreas.hansson@arm.com termcap.Normal 3709556Sandreas.hansson@arm.com else: 3719556Sandreas.hansson@arm.com print CXX_version.replace('\n', '<nl>') 3729556Sandreas.hansson@arm.com print " If you're trying to use a compiler other than GCC" 3739556Sandreas.hansson@arm.com print " or clang, there appears to be something wrong with your" 3749556Sandreas.hansson@arm.com print " environment." 3759556Sandreas.hansson@arm.com print " " 3769556Sandreas.hansson@arm.com print " If you are trying to use a compiler other than those listed" 3779556Sandreas.hansson@arm.com print " above you will need to ease fix SConstruct and " 3789556Sandreas.hansson@arm.com print " src/SConscript to support that compiler." 3799556Sandreas.hansson@arm.com Exit(1) 3809556Sandreas.hansson@arm.com 3816121Snate@binkert.orgif main['GCC']: 38211500Sandreas.hansson@arm.com # Check for a supported version of gcc. >= 4.8 is chosen for its 38310238Sandreas.hansson@arm.com # level of c++11 support. See 38410878Sandreas.hansson@arm.com # http://gcc.gnu.org/projects/cxx0x.html for details. 3859420Sandreas.hansson@arm.com gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 38611500Sandreas.hansson@arm.com if compareVersions(gcc_version, "4.8") < 0: 38711500Sandreas.hansson@arm.com print 'Error: gcc version 4.8 or newer required.' 3889420Sandreas.hansson@arm.com print ' Installed version:', gcc_version 3899420Sandreas.hansson@arm.com Exit(1) 3909420Sandreas.hansson@arm.com 3919420Sandreas.hansson@arm.com main['GCC_VERSION'] = gcc_version 3929420Sandreas.hansson@arm.com 39312063Sgabeblack@google.com if compareVersions(gcc_version, '4.9') >= 0: 39412063Sgabeblack@google.com # Incremental linking with LTO is currently broken in gcc versions 39512063Sgabeblack@google.com # 4.9 and above. A version where everything works completely hasn't 39612063Sgabeblack@google.com # yet been identified. 39712063Sgabeblack@google.com # 39812063Sgabeblack@google.com # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67548 39912063Sgabeblack@google.com main['BROKEN_INCREMENTAL_LTO'] = True 40012063Sgabeblack@google.com if compareVersions(gcc_version, '6.0') >= 0: 40112063Sgabeblack@google.com # gcc versions 6.0 and greater accept an -flinker-output flag which 40212063Sgabeblack@google.com # selects what type of output the linker should generate. This is 40312063Sgabeblack@google.com # necessary for incremental lto to work, but is also broken in 40412063Sgabeblack@google.com # current versions of gcc. It may not be necessary in future 40512063Sgabeblack@google.com # versions. We add it here since it might be, and as a reminder that 40612063Sgabeblack@google.com # it exists. It's excluded if lto is being forced. 40712063Sgabeblack@google.com # 40812063Sgabeblack@google.com # https://gcc.gnu.org/gcc-6/changes.html 40912063Sgabeblack@google.com # https://gcc.gnu.org/ml/gcc-patches/2015-11/msg03161.html 41012063Sgabeblack@google.com # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69866 41112063Sgabeblack@google.com if not GetOption('force_lto'): 41212063Sgabeblack@google.com main.Append(PSHLINKFLAGS='-flinker-output=rel') 41312063Sgabeblack@google.com main.Append(PLINKFLAGS='-flinker-output=rel') 41412063Sgabeblack@google.com 41510264Sandreas.hansson@arm.com # gcc from version 4.8 and above generates "rep; ret" instructions 41610264Sandreas.hansson@arm.com # to avoid performance penalties on certain AMD chips. Older 41710264Sandreas.hansson@arm.com # assemblers detect this as an error, "Error: expecting string 41810264Sandreas.hansson@arm.com # instruction after `rep'" 41911925Sgabeblack@google.com as_version_raw = readCommand([main['AS'], '-v', '/dev/null', 42011925Sgabeblack@google.com '-o', '/dev/null'], 42111500Sandreas.hansson@arm.com exception=False).split() 42210264Sandreas.hansson@arm.com 42311500Sandreas.hansson@arm.com # version strings may contain extra distro-specific 42411500Sandreas.hansson@arm.com # qualifiers, so play it safe and keep only what comes before 42511500Sandreas.hansson@arm.com # the first hyphen 42611500Sandreas.hansson@arm.com as_version = as_version_raw[-1].split('-')[0] if as_version_raw else None 42710866Sandreas.hansson@arm.com 42811500Sandreas.hansson@arm.com if not as_version or compareVersions(as_version, "2.23") < 0: 42911500Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 43011500Sandreas.hansson@arm.com 'Warning: This combination of gcc and binutils have' + \ 43111500Sandreas.hansson@arm.com ' known incompatibilities.\n' + \ 43211500Sandreas.hansson@arm.com ' If you encounter build problems, please update ' + \ 43311500Sandreas.hansson@arm.com 'binutils to 2.23.' + \ 43411500Sandreas.hansson@arm.com termcap.Normal 43510264Sandreas.hansson@arm.com 43610457Sandreas.hansson@arm.com # Make sure we warn if the user has requested to compile with the 43710457Sandreas.hansson@arm.com # Undefined Benahvior Sanitizer and this version of gcc does not 43810457Sandreas.hansson@arm.com # support it. 43910457Sandreas.hansson@arm.com if GetOption('with_ubsan') and \ 44010457Sandreas.hansson@arm.com compareVersions(gcc_version, '4.9') < 0: 44110457Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 44210457Sandreas.hansson@arm.com 'Warning: UBSan is only supported using gcc 4.9 and later.' + \ 44310457Sandreas.hansson@arm.com termcap.Normal 44410457Sandreas.hansson@arm.com 44512063Sgabeblack@google.com disable_lto = GetOption('no_lto') 44612063Sgabeblack@google.com if not disable_lto and main.get('BROKEN_INCREMENTAL_LTO', False) and \ 44712063Sgabeblack@google.com not GetOption('force_lto'): 44812063Sgabeblack@google.com print termcap.Yellow + termcap.Bold + \ 44912063Sgabeblack@google.com 'Warning: Your compiler doesn\'t support incremental linking' + \ 45012063Sgabeblack@google.com ' and lto at the same time, so lto is being disabled. To force' + \ 45112063Sgabeblack@google.com ' lto on anyway, use the --force-lto option. That will disable' + \ 45212063Sgabeblack@google.com ' partial linking.' + \ 45312063Sgabeblack@google.com termcap.Normal 45412063Sgabeblack@google.com disable_lto = True 45512063Sgabeblack@google.com 45610238Sandreas.hansson@arm.com # Add the appropriate Link-Time Optimization (LTO) flags 45710238Sandreas.hansson@arm.com # unless LTO is explicitly turned off. Note that these flags 45810238Sandreas.hansson@arm.com # are only used by the fast target. 45912063Sgabeblack@google.com if not disable_lto: 46010238Sandreas.hansson@arm.com # Pass the LTO flag when compiling to produce GIMPLE 46110238Sandreas.hansson@arm.com # output, we merely create the flags here and only append 46210416Sandreas.hansson@arm.com # them later 46310238Sandreas.hansson@arm.com main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 4649227Sandreas.hansson@arm.com 46510238Sandreas.hansson@arm.com # Use the same amount of jobs for LTO as we are running 46610416Sandreas.hansson@arm.com # scons with 46710416Sandreas.hansson@arm.com main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 4689227Sandreas.hansson@arm.com 4699590Sandreas@sandberg.pp.se main.Append(TCMALLOC_CCFLAGS=['-fno-builtin-malloc', '-fno-builtin-calloc', 4709590Sandreas@sandberg.pp.se '-fno-builtin-realloc', '-fno-builtin-free']) 4719590Sandreas@sandberg.pp.se 47211497SMatteo.Andreozzi@arm.com # add option to check for undeclared overrides 47311497SMatteo.Andreozzi@arm.com if compareVersions(gcc_version, "5.0") > 0: 47411497SMatteo.Andreozzi@arm.com main.Append(CCFLAGS=['-Wno-error=suggest-override']) 47511497SMatteo.Andreozzi@arm.com 4768737Skoansin.tan@gmail.comelif main['CLANG']: 47710878Sandreas.hansson@arm.com # Check for a supported version of clang, >= 3.1 is needed to 47811500Sandreas.hansson@arm.com # support similar features as gcc 4.8. See 4799420Sandreas.hansson@arm.com # http://clang.llvm.org/cxx_status.html for details 4808737Skoansin.tan@gmail.com clang_version_re = re.compile(".* version (\d+\.\d+)") 48110106SMitch.Hayenga@arm.com clang_version_match = clang_version_re.search(CXX_version) 4828737Skoansin.tan@gmail.com if (clang_version_match): 4838737Skoansin.tan@gmail.com clang_version = clang_version_match.groups()[0] 48410878Sandreas.hansson@arm.com if compareVersions(clang_version, "3.1") < 0: 48510878Sandreas.hansson@arm.com print 'Error: clang version 3.1 or newer required.' 4868737Skoansin.tan@gmail.com print ' Installed version:', clang_version 4878737Skoansin.tan@gmail.com Exit(1) 4888737Skoansin.tan@gmail.com else: 4898737Skoansin.tan@gmail.com print 'Error: Unable to determine clang version.' 4908737Skoansin.tan@gmail.com Exit(1) 4918737Skoansin.tan@gmail.com 49211294Sandreas.hansson@arm.com # clang has a few additional warnings that we disable, extraneous 4939556Sandreas.hansson@arm.com # parantheses are allowed due to Ruby's printing of the AST, 4949556Sandreas.hansson@arm.com # finally self assignments are allowed as the generated CPU code 4959556Sandreas.hansson@arm.com # is relying on this 49611294Sandreas.hansson@arm.com main.Append(CCFLAGS=['-Wno-parentheses', 49710278SAndreas.Sandberg@ARM.com '-Wno-self-assign', 49810278SAndreas.Sandberg@ARM.com # Some versions of libstdc++ (4.8?) seem to 49910278SAndreas.Sandberg@ARM.com # use struct hash and class hash 50010278SAndreas.Sandberg@ARM.com # interchangeably. 50110278SAndreas.Sandberg@ARM.com '-Wno-mismatched-tags', 50210278SAndreas.Sandberg@ARM.com ]) 5039556Sandreas.hansson@arm.com 5049590Sandreas@sandberg.pp.se main.Append(TCMALLOC_CCFLAGS=['-fno-builtin']) 5059590Sandreas@sandberg.pp.se 5069420Sandreas.hansson@arm.com # On Mac OS X/Darwin we need to also use libc++ (part of XCode) as 5079846Sandreas.hansson@arm.com # opposed to libstdc++, as the later is dated. 5089846Sandreas.hansson@arm.com if sys.platform == "darwin": 5099846Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-stdlib=libc++']) 5109846Sandreas.hansson@arm.com main.Append(LIBS=['c++']) 5118946Sandreas.hansson@arm.com 51211811Sbaz21@cam.ac.uk # On FreeBSD we need libthr. 51311811Sbaz21@cam.ac.uk if sys.platform.startswith('freebsd'): 51411811Sbaz21@cam.ac.uk main.Append(LIBS=['thr']) 51511811Sbaz21@cam.ac.uk 5163918Ssaidi@eecs.umich.eduelse: 5179068SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 5189068SAli.Saidi@ARM.com print "Don't know what compiler options to use for your compiler." 5199068SAli.Saidi@ARM.com print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 5209068SAli.Saidi@ARM.com print termcap.Yellow + ' version:' + termcap.Normal, 5219068SAli.Saidi@ARM.com if not CXX_version: 5229068SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 5239068SAli.Saidi@ARM.com termcap.Normal 5249068SAli.Saidi@ARM.com else: 5259068SAli.Saidi@ARM.com print CXX_version.replace('\n', '<nl>') 5269419Sandreas.hansson@arm.com print " If you're trying to use a compiler other than GCC" 5279068SAli.Saidi@ARM.com print " or clang, there appears to be something wrong with your" 5289068SAli.Saidi@ARM.com print " environment." 5299068SAli.Saidi@ARM.com print " " 5309068SAli.Saidi@ARM.com print " If you are trying to use a compiler other than those listed" 5319068SAli.Saidi@ARM.com print " above you will need to ease fix SConstruct and " 5329068SAli.Saidi@ARM.com print " src/SConscript to support that compiler." 5333918Ssaidi@eecs.umich.edu Exit(1) 5343918Ssaidi@eecs.umich.edu 5356157Snate@binkert.org# Set up common yacc/bison flags (needed for Ruby) 5366157Snate@binkert.orgmain['YACCFLAGS'] = '-d' 5376157Snate@binkert.orgmain['YACCHXXFILESUFFIX'] = '.hh' 5386157Snate@binkert.org 5395397Ssaidi@eecs.umich.edu# Do this after we save setting back, or else we'll tack on an 5405397Ssaidi@eecs.umich.edu# extra 'qdo' every time we run scons. 5416121Snate@binkert.orgif main['BATCH']: 5426121Snate@binkert.org main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 5436121Snate@binkert.org main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 5446121Snate@binkert.org main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 5456121Snate@binkert.org main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 5466121Snate@binkert.org main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 5475397Ssaidi@eecs.umich.edu 5481851SN/Aif sys.platform == 'cygwin': 5491851SN/A # cygwin has some header file issues... 5507739Sgblack@eecs.umich.edu main.Append(CCFLAGS=["-Wno-uninitialized"]) 551955SN/A 5529396Sandreas.hansson@arm.com# Check for the protobuf compiler 5539396Sandreas.hansson@arm.comprotoc_version = readCommand([main['PROTOC'], '--version'], 5549396Sandreas.hansson@arm.com exception='').split() 5559396Sandreas.hansson@arm.com 5569396Sandreas.hansson@arm.com# First two words should be "libprotoc x.y.z" 5579396Sandreas.hansson@arm.comif len(protoc_version) < 2 or protoc_version[0] != 'libprotoc': 5589396Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 5599396Sandreas.hansson@arm.com 'Warning: Protocol buffer compiler (protoc) not found.\n' + \ 5609396Sandreas.hansson@arm.com ' Please install protobuf-compiler for tracing support.' + \ 5619396Sandreas.hansson@arm.com termcap.Normal 5629396Sandreas.hansson@arm.com main['PROTOC'] = False 5639396Sandreas.hansson@arm.comelse: 5649396Sandreas.hansson@arm.com # Based on the availability of the compress stream wrappers, 5659396Sandreas.hansson@arm.com # require 2.1.0 5669396Sandreas.hansson@arm.com min_protoc_version = '2.1.0' 5679396Sandreas.hansson@arm.com if compareVersions(protoc_version[1], min_protoc_version) < 0: 5689477Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 5699477Sandreas.hansson@arm.com 'Warning: protoc version', min_protoc_version, \ 5709477Sandreas.hansson@arm.com 'or newer required.\n' + \ 5719477Sandreas.hansson@arm.com ' Installed version:', protoc_version[1], \ 5729477Sandreas.hansson@arm.com termcap.Normal 5739477Sandreas.hansson@arm.com main['PROTOC'] = False 5749477Sandreas.hansson@arm.com else: 5759477Sandreas.hansson@arm.com # Attempt to determine the appropriate include path and 5769477Sandreas.hansson@arm.com # library path using pkg-config, that means we also need to 5779477Sandreas.hansson@arm.com # check for pkg-config. Note that it is possible to use 5789477Sandreas.hansson@arm.com # protobuf without the involvement of pkg-config. Later on we 5799477Sandreas.hansson@arm.com # check go a library config check and at that point the test 5809477Sandreas.hansson@arm.com # will fail if libprotobuf cannot be found. 5819477Sandreas.hansson@arm.com if readCommand(['pkg-config', '--version'], exception=''): 5829477Sandreas.hansson@arm.com try: 5839477Sandreas.hansson@arm.com # Attempt to establish what linking flags to add for protobuf 5849477Sandreas.hansson@arm.com # using pkg-config 5859477Sandreas.hansson@arm.com main.ParseConfig('pkg-config --cflags --libs-only-L protobuf') 5869477Sandreas.hansson@arm.com except: 5879477Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 5889477Sandreas.hansson@arm.com 'Warning: pkg-config could not get protobuf flags.' + \ 5899477Sandreas.hansson@arm.com termcap.Normal 5909396Sandreas.hansson@arm.com 5912667Sstever@eecs.umich.edu 59210710Sandreas.hansson@arm.com# Check for 'timeout' from GNU coreutils. If present, regressions will 59310710Sandreas.hansson@arm.com# be run with a time limit. We require version 8.13 since we rely on 59410710Sandreas.hansson@arm.com# support for the '--foreground' option. 59511811Sbaz21@cam.ac.ukif sys.platform.startswith('freebsd'): 59611811Sbaz21@cam.ac.uk timeout_lines = readCommand(['gtimeout', '--version'], 59711811Sbaz21@cam.ac.uk exception='').splitlines() 59811811Sbaz21@cam.ac.ukelse: 59911811Sbaz21@cam.ac.uk timeout_lines = readCommand(['timeout', '--version'], 60011811Sbaz21@cam.ac.uk exception='').splitlines() 60110710Sandreas.hansson@arm.com# Get the first line and tokenize it 60210710Sandreas.hansson@arm.comtimeout_version = timeout_lines[0].split() if timeout_lines else [] 60310710Sandreas.hansson@arm.commain['TIMEOUT'] = timeout_version and \ 60410710Sandreas.hansson@arm.com compareVersions(timeout_version[-1], '8.13') >= 0 60510384SCurtis.Dunham@arm.com 6069986Sandreas@sandberg.pp.se# Add a custom Check function to test for structure members. 6079986Sandreas@sandberg.pp.sedef CheckMember(context, include, decl, member, include_quotes="<>"): 6089986Sandreas@sandberg.pp.se context.Message("Checking for member %s in %s..." % 6099986Sandreas@sandberg.pp.se (member, decl)) 6109986Sandreas@sandberg.pp.se text = """ 6119986Sandreas@sandberg.pp.se#include %(header)s 6129986Sandreas@sandberg.pp.seint main(){ 6139986Sandreas@sandberg.pp.se %(decl)s test; 6149986Sandreas@sandberg.pp.se (void)test.%(member)s; 6159986Sandreas@sandberg.pp.se return 0; 6169986Sandreas@sandberg.pp.se}; 6179986Sandreas@sandberg.pp.se""" % { "header" : include_quotes[0] + include + include_quotes[1], 6189986Sandreas@sandberg.pp.se "decl" : decl, 6199986Sandreas@sandberg.pp.se "member" : member, 6209986Sandreas@sandberg.pp.se } 6219986Sandreas@sandberg.pp.se 6229986Sandreas@sandberg.pp.se ret = context.TryCompile(text, extension=".cc") 6239986Sandreas@sandberg.pp.se context.Result(ret) 6249986Sandreas@sandberg.pp.se return ret 6259986Sandreas@sandberg.pp.se 6262638Sstever@eecs.umich.edu# Platform-specific configuration. Note again that we assume that all 6272638Sstever@eecs.umich.edu# builds under a given build root run on the same host platform. 6286121Snate@binkert.orgconf = Configure(main, 6293716Sstever@eecs.umich.edu conf_dir = joinpath(build_root, '.scons_config'), 6305522Snate@binkert.org log_file = joinpath(build_root, 'scons_config.log'), 6319986Sandreas@sandberg.pp.se custom_tests = { 6329986Sandreas@sandberg.pp.se 'CheckMember' : CheckMember, 6339986Sandreas@sandberg.pp.se }) 6345522Snate@binkert.org 6355227Ssaidi@eecs.umich.edu# Check if we should compile a 64 bit binary on Mac OS X/Darwin 6365227Ssaidi@eecs.umich.edutry: 6375227Ssaidi@eecs.umich.edu import platform 6385227Ssaidi@eecs.umich.edu uname = platform.uname() 6396654Snate@binkert.org if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0: 6406654Snate@binkert.org if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]): 6417769SAli.Saidi@ARM.com main.Append(CCFLAGS=['-arch', 'x86_64']) 6427769SAli.Saidi@ARM.com main.Append(CFLAGS=['-arch', 'x86_64']) 6437769SAli.Saidi@ARM.com main.Append(LINKFLAGS=['-arch', 'x86_64']) 6447769SAli.Saidi@ARM.com main.Append(ASFLAGS=['-arch', 'x86_64']) 6455227Ssaidi@eecs.umich.eduexcept: 6465227Ssaidi@eecs.umich.edu pass 6475227Ssaidi@eecs.umich.edu 6485204Sstever@gmail.com# Recent versions of scons substitute a "Null" object for Configure() 6495204Sstever@gmail.com# when configuration isn't necessary, e.g., if the "--help" option is 6505204Sstever@gmail.com# present. Unfortuantely this Null object always returns false, 6515204Sstever@gmail.com# breaking all our configuration checks. We replace it with our own 6525204Sstever@gmail.com# more optimistic null object that returns True instead. 6535204Sstever@gmail.comif not conf: 6545204Sstever@gmail.com def NullCheck(*args, **kwargs): 6555204Sstever@gmail.com return True 6565204Sstever@gmail.com 6575204Sstever@gmail.com class NullConf: 6585204Sstever@gmail.com def __init__(self, env): 6595204Sstever@gmail.com self.env = env 6605204Sstever@gmail.com def Finish(self): 6615204Sstever@gmail.com return self.env 6625204Sstever@gmail.com def __getattr__(self, mname): 6635204Sstever@gmail.com return NullCheck 6645204Sstever@gmail.com 6656121Snate@binkert.org conf = NullConf(main) 6665204Sstever@gmail.com 6677727SAli.Saidi@ARM.com# Cache build files in the supplied directory. 6687727SAli.Saidi@ARM.comif main['M5_BUILD_CACHE']: 6697727SAli.Saidi@ARM.com print 'Using build cache located at', main['M5_BUILD_CACHE'] 6707727SAli.Saidi@ARM.com CacheDir(main['M5_BUILD_CACHE']) 6717727SAli.Saidi@ARM.com 67211988Sandreas.sandberg@arm.commain['USE_PYTHON'] = not GetOption('without_python') 67311988Sandreas.sandberg@arm.comif main['USE_PYTHON']: 67410453SAndrew.Bardsley@arm.com # Find Python include and library directories for embedding the 67510453SAndrew.Bardsley@arm.com # interpreter. We rely on python-config to resolve the appropriate 67610453SAndrew.Bardsley@arm.com # includes and linker flags. ParseConfig does not seem to understand 67710453SAndrew.Bardsley@arm.com # the more exotic linker flags such as -Xlinker and -export-dynamic so 67810453SAndrew.Bardsley@arm.com # we add them explicitly below. If you want to link in an alternate 67910453SAndrew.Bardsley@arm.com # version of python, see above for instructions on how to invoke 68010453SAndrew.Bardsley@arm.com # scons with the appropriate PATH set. 68110453SAndrew.Bardsley@arm.com # 68210453SAndrew.Bardsley@arm.com # First we check if python2-config exists, else we use python-config 68310453SAndrew.Bardsley@arm.com python_config = readCommand(['which', 'python2-config'], 68410160Sandreas.hansson@arm.com exception='').strip() 68510453SAndrew.Bardsley@arm.com if not os.path.exists(python_config): 68610453SAndrew.Bardsley@arm.com python_config = readCommand(['which', 'python-config'], 68710453SAndrew.Bardsley@arm.com exception='').strip() 68810453SAndrew.Bardsley@arm.com py_includes = readCommand([python_config, '--includes'], 68910453SAndrew.Bardsley@arm.com exception='').split() 69010453SAndrew.Bardsley@arm.com # Strip the -I from the include folders before adding them to the 69110453SAndrew.Bardsley@arm.com # CPPPATH 69210453SAndrew.Bardsley@arm.com main.Append(CPPPATH=map(lambda inc: inc[2:], py_includes)) 6939812Sandreas.hansson@arm.com 69410453SAndrew.Bardsley@arm.com # Read the linker flags and split them into libraries and other link 69510453SAndrew.Bardsley@arm.com # flags. The libraries are added later through the call the CheckLib. 69610453SAndrew.Bardsley@arm.com py_ld_flags = readCommand([python_config, '--ldflags'], 69710453SAndrew.Bardsley@arm.com exception='').split() 69810453SAndrew.Bardsley@arm.com py_libs = [] 69910453SAndrew.Bardsley@arm.com for lib in py_ld_flags: 70010453SAndrew.Bardsley@arm.com if not lib.startswith('-l'): 70110453SAndrew.Bardsley@arm.com main.Append(LINKFLAGS=[lib]) 70210453SAndrew.Bardsley@arm.com else: 70310453SAndrew.Bardsley@arm.com lib = lib[2:] 70410453SAndrew.Bardsley@arm.com if lib not in py_libs: 70510453SAndrew.Bardsley@arm.com py_libs.append(lib) 7067727SAli.Saidi@ARM.com 70710453SAndrew.Bardsley@arm.com # verify that this stuff works 70810453SAndrew.Bardsley@arm.com if not conf.CheckHeader('Python.h', '<>'): 70910453SAndrew.Bardsley@arm.com print "Error: can't find Python.h header in", py_includes 71010453SAndrew.Bardsley@arm.com print "Install Python headers (package python-dev on Ubuntu and RedHat)" 71110453SAndrew.Bardsley@arm.com Exit(1) 7123118Sstever@eecs.umich.edu 71310453SAndrew.Bardsley@arm.com for lib in py_libs: 71410453SAndrew.Bardsley@arm.com if not conf.CheckLib(lib): 71510453SAndrew.Bardsley@arm.com print "Error: can't find library %s required by python" % lib 71610453SAndrew.Bardsley@arm.com Exit(1) 7173118Sstever@eecs.umich.edu 7183483Ssaidi@eecs.umich.edu# On Solaris you need to use libsocket for socket ops 7193494Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 7203494Ssaidi@eecs.umich.edu if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 7213483Ssaidi@eecs.umich.edu print "Can't find library with socket calls (e.g. accept())" 7223483Ssaidi@eecs.umich.edu Exit(1) 7233483Ssaidi@eecs.umich.edu 7243053Sstever@eecs.umich.edu# Check for zlib. If the check passes, libz will be automatically 7253053Sstever@eecs.umich.edu# added to the LIBS environment variable. 7263918Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 7273053Sstever@eecs.umich.edu print 'Error: did not find needed zlib compression library '\ 7283053Sstever@eecs.umich.edu 'and/or zlib.h header file.' 7293053Sstever@eecs.umich.edu print ' Please install zlib and try again.' 7303053Sstever@eecs.umich.edu Exit(1) 7313053Sstever@eecs.umich.edu 7329396Sandreas.hansson@arm.com# If we have the protobuf compiler, also make sure we have the 7339396Sandreas.hansson@arm.com# development libraries. If the check passes, libprotobuf will be 7349396Sandreas.hansson@arm.com# automatically added to the LIBS environment variable. After 7359396Sandreas.hansson@arm.com# this, we can use the HAVE_PROTOBUF flag to determine if we have 7369396Sandreas.hansson@arm.com# got both protoc and libprotobuf available. 7379396Sandreas.hansson@arm.commain['HAVE_PROTOBUF'] = main['PROTOC'] and \ 7389396Sandreas.hansson@arm.com conf.CheckLibWithHeader('protobuf', 'google/protobuf/message.h', 7399396Sandreas.hansson@arm.com 'C++', 'GOOGLE_PROTOBUF_VERIFY_VERSION;') 7409396Sandreas.hansson@arm.com 7419477Sandreas.hansson@arm.com# If we have the compiler but not the library, print another warning. 7429396Sandreas.hansson@arm.comif main['PROTOC'] and not main['HAVE_PROTOBUF']: 7439477Sandreas.hansson@arm.com print termcap.Yellow + termcap.Bold + \ 7449477Sandreas.hansson@arm.com 'Warning: did not find protocol buffer library and/or headers.\n' + \ 7459477Sandreas.hansson@arm.com ' Please install libprotobuf-dev for tracing support.' + \ 7469477Sandreas.hansson@arm.com termcap.Normal 7479396Sandreas.hansson@arm.com 7487840Snate@binkert.org# Check for librt. 7497865Sgblack@eecs.umich.eduhave_posix_clock = \ 7507865Sgblack@eecs.umich.edu conf.CheckLibWithHeader(None, 'time.h', 'C', 7517865Sgblack@eecs.umich.edu 'clock_nanosleep(0,0,NULL,NULL);') or \ 7527865Sgblack@eecs.umich.edu conf.CheckLibWithHeader('rt', 'time.h', 'C', 7537865Sgblack@eecs.umich.edu 'clock_nanosleep(0,0,NULL,NULL);') 7547840Snate@binkert.org 7559900Sandreas@sandberg.pp.sehave_posix_timers = \ 7569900Sandreas@sandberg.pp.se conf.CheckLibWithHeader([None, 'rt'], [ 'time.h', 'signal.h' ], 'C', 7579900Sandreas@sandberg.pp.se 'timer_create(CLOCK_MONOTONIC, NULL, NULL);') 7589900Sandreas@sandberg.pp.se 75910456SCurtis.Dunham@arm.comif not GetOption('without_tcmalloc'): 76010456SCurtis.Dunham@arm.com if conf.CheckLib('tcmalloc'): 76110456SCurtis.Dunham@arm.com main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 76210456SCurtis.Dunham@arm.com elif conf.CheckLib('tcmalloc_minimal'): 76310456SCurtis.Dunham@arm.com main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 76410456SCurtis.Dunham@arm.com else: 76510456SCurtis.Dunham@arm.com print termcap.Yellow + termcap.Bold + \ 76610456SCurtis.Dunham@arm.com "You can get a 12% performance improvement by "\ 76710456SCurtis.Dunham@arm.com "installing tcmalloc (libgoogle-perftools-dev package "\ 76810456SCurtis.Dunham@arm.com "on Ubuntu or RedHat)." + termcap.Normal 7699045SAli.Saidi@ARM.com 77011235Sandreas.sandberg@arm.com 77111235Sandreas.sandberg@arm.com# Detect back trace implementations. The last implementation in the 77211235Sandreas.sandberg@arm.com# list will be used by default. 77311235Sandreas.sandberg@arm.combacktrace_impls = [ "none" ] 77411235Sandreas.sandberg@arm.com 77511235Sandreas.sandberg@arm.comif conf.CheckLibWithHeader(None, 'execinfo.h', 'C', 77611235Sandreas.sandberg@arm.com 'backtrace_symbols_fd((void*)0, 0, 0);'): 77711235Sandreas.sandberg@arm.com backtrace_impls.append("glibc") 77811811Sbaz21@cam.ac.ukelif conf.CheckLibWithHeader('execinfo', 'execinfo.h', 'C', 77911811Sbaz21@cam.ac.uk 'backtrace_symbols_fd((void*)0, 0, 0);'): 78011811Sbaz21@cam.ac.uk # NetBSD and FreeBSD need libexecinfo. 78111811Sbaz21@cam.ac.uk backtrace_impls.append("glibc") 78211811Sbaz21@cam.ac.uk main.Append(LIBS=['execinfo']) 78311235Sandreas.sandberg@arm.com 78411235Sandreas.sandberg@arm.comif backtrace_impls[-1] == "none": 78511235Sandreas.sandberg@arm.com default_backtrace_impl = "none" 78611235Sandreas.sandberg@arm.com print termcap.Yellow + termcap.Bold + \ 78711235Sandreas.sandberg@arm.com "No suitable back trace implementation found." + \ 78811235Sandreas.sandberg@arm.com termcap.Normal 78911235Sandreas.sandberg@arm.com 7907840Snate@binkert.orgif not have_posix_clock: 7917840Snate@binkert.org print "Can't find library for POSIX clocks." 7927840Snate@binkert.org 7931858SN/A# Check for <fenv.h> (C99 FP environment control) 7941858SN/Ahave_fenv = conf.CheckHeader('fenv.h', '<>') 7951858SN/Aif not have_fenv: 7961858SN/A print "Warning: Header file <fenv.h> not found." 7971858SN/A print " This host has no IEEE FP rounding mode control." 7981858SN/A 79912230Sgiacomo.travaglini@arm.com# Check for <png.h> (libpng library needed if wanting to dump 80012230Sgiacomo.travaglini@arm.com# frame buffer image in png format) 80112230Sgiacomo.travaglini@arm.comhave_png = conf.CheckHeader('png.h', '<>') 80212230Sgiacomo.travaglini@arm.comif not have_png: 80312230Sgiacomo.travaglini@arm.com print "Warning: Header file <png.h> not found." 80412230Sgiacomo.travaglini@arm.com print " This host has no libpng library." 80512230Sgiacomo.travaglini@arm.com print " Disabling support for PNG framebuffers." 80612230Sgiacomo.travaglini@arm.com 8079903Sandreas.hansson@arm.com# Check if we should enable KVM-based hardware virtualization. The API 8089903Sandreas.hansson@arm.com# we rely on exists since version 2.6.36 of the kernel, but somehow 8099903Sandreas.hansson@arm.com# the KVM_API_VERSION does not reflect the change. We test for one of 8109903Sandreas.hansson@arm.com# the types as a fall back. 81110841Sandreas.sandberg@arm.comhave_kvm = conf.CheckHeader('linux/kvm.h', '<>') 8129651SAndreas.Sandberg@ARM.comif not have_kvm: 8139903Sandreas.hansson@arm.com print "Info: Compatible header file <linux/kvm.h> not found, " \ 8149651SAndreas.Sandberg@ARM.com "disabling KVM support." 8159651SAndreas.Sandberg@ARM.com 81612056Sgabeblack@google.com# Check if the TUN/TAP driver is available. 81712056Sgabeblack@google.comhave_tuntap = conf.CheckHeader('linux/if_tun.h', '<>') 81812056Sgabeblack@google.comif not have_tuntap: 81912056Sgabeblack@google.com print "Info: Compatible header file <linux/if_tun.h> not found." 82012056Sgabeblack@google.com 82110841Sandreas.sandberg@arm.com# x86 needs support for xsave. We test for the structure here since we 82210841Sandreas.sandberg@arm.com# won't be able to run new tests by the time we know which ISA we're 82310841Sandreas.sandberg@arm.com# targeting. 82410841Sandreas.sandberg@arm.comhave_kvm_xsave = conf.CheckTypeSize('struct kvm_xsave', 82510841Sandreas.sandberg@arm.com '#include <linux/kvm.h>') != 0 82610841Sandreas.sandberg@arm.com 8279651SAndreas.Sandberg@ARM.com# Check if the requested target ISA is compatible with the host 8289651SAndreas.Sandberg@ARM.comdef is_isa_kvm_compatible(isa): 8299651SAndreas.Sandberg@ARM.com try: 8309651SAndreas.Sandberg@ARM.com import platform 8319651SAndreas.Sandberg@ARM.com host_isa = platform.machine() 8329651SAndreas.Sandberg@ARM.com except: 8339651SAndreas.Sandberg@ARM.com print "Warning: Failed to determine host ISA." 8349651SAndreas.Sandberg@ARM.com return False 8359651SAndreas.Sandberg@ARM.com 83610841Sandreas.sandberg@arm.com if not have_posix_timers: 83710841Sandreas.sandberg@arm.com print "Warning: Can not enable KVM, host seems to lack support " \ 83810841Sandreas.sandberg@arm.com "for POSIX timers" 83910841Sandreas.sandberg@arm.com return False 84010841Sandreas.sandberg@arm.com 84110841Sandreas.sandberg@arm.com if isa == "arm": 84210860Sandreas.sandberg@arm.com return host_isa in ( "armv7l", "aarch64" ) 84310841Sandreas.sandberg@arm.com elif isa == "x86": 84410841Sandreas.sandberg@arm.com if host_isa != "x86_64": 84510841Sandreas.sandberg@arm.com return False 84610841Sandreas.sandberg@arm.com 84710841Sandreas.sandberg@arm.com if not have_kvm_xsave: 84810841Sandreas.sandberg@arm.com print "KVM on x86 requires xsave support in kernel headers." 84910841Sandreas.sandberg@arm.com return False 85010841Sandreas.sandberg@arm.com 85110841Sandreas.sandberg@arm.com return True 85210841Sandreas.sandberg@arm.com else: 85310841Sandreas.sandberg@arm.com return False 8549651SAndreas.Sandberg@ARM.com 8559651SAndreas.Sandberg@ARM.com 8569986Sandreas@sandberg.pp.se# Check if the exclude_host attribute is available. We want this to 8579986Sandreas@sandberg.pp.se# get accurate instruction counts in KVM. 8589986Sandreas@sandberg.pp.semain['HAVE_PERF_ATTR_EXCLUDE_HOST'] = conf.CheckMember( 8599986Sandreas@sandberg.pp.se 'linux/perf_event.h', 'struct perf_event_attr', 'exclude_host') 8609986Sandreas@sandberg.pp.se 8619986Sandreas@sandberg.pp.se 8625863Snate@binkert.org###################################################################### 8635863Snate@binkert.org# 8645863Snate@binkert.org# Finish the configuration 8655863Snate@binkert.org# 8666121Snate@binkert.orgmain = conf.Finish() 8671858SN/A 8685863Snate@binkert.org###################################################################### 8695863Snate@binkert.org# 8705863Snate@binkert.org# Collect all non-global variables 8715863Snate@binkert.org# 8725863Snate@binkert.org 8732139SN/A# Define the universe of supported ISAs 8744202Sbinkertn@umich.eduall_isa_list = [ ] 87511308Santhony.gutierrez@amd.comall_gpu_isa_list = [ ] 8764202Sbinkertn@umich.eduExport('all_isa_list') 87711308Santhony.gutierrez@amd.comExport('all_gpu_isa_list') 8782139SN/A 8796994Snate@binkert.orgclass CpuModel(object): 8806994Snate@binkert.org '''The CpuModel class encapsulates everything the ISA parser needs to 8816994Snate@binkert.org know about a particular CPU model.''' 8826994Snate@binkert.org 8836994Snate@binkert.org # Dict of available CPU model objects. Accessible as CpuModel.dict. 8846994Snate@binkert.org dict = {} 8856994Snate@binkert.org 8866994Snate@binkert.org # Constructor. Automatically adds models to CpuModel.dict. 88710319SAndreas.Sandberg@ARM.com def __init__(self, name, default=False): 8886994Snate@binkert.org self.name = name # name of model 8896994Snate@binkert.org 8906994Snate@binkert.org # This cpu is enabled by default 8916994Snate@binkert.org self.default = default 8926994Snate@binkert.org 8936994Snate@binkert.org # Add self to dict 8946994Snate@binkert.org if name in CpuModel.dict: 8956994Snate@binkert.org raise AttributeError, "CpuModel '%s' already registered" % name 8966994Snate@binkert.org CpuModel.dict[name] = self 8976994Snate@binkert.org 8986994Snate@binkert.orgExport('CpuModel') 8992155SN/A 9005863Snate@binkert.org# Sticky variables get saved in the variables file so they persist from 9011869SN/A# one invocation to the next (unless overridden, in which case the new 9021869SN/A# value becomes sticky). 9035863Snate@binkert.orgsticky_vars = Variables(args=ARGUMENTS) 9045863Snate@binkert.orgExport('sticky_vars') 9054202Sbinkertn@umich.edu 9066108Snate@binkert.org# Sticky variables that should be exported 9076108Snate@binkert.orgexport_vars = [] 9086108Snate@binkert.orgExport('export_vars') 9096108Snate@binkert.org 9109219Spower.jg@gmail.com# For Ruby 9119219Spower.jg@gmail.comall_protocols = [] 9129219Spower.jg@gmail.comExport('all_protocols') 9139219Spower.jg@gmail.comprotocol_dirs = [] 9149219Spower.jg@gmail.comExport('protocol_dirs') 9159219Spower.jg@gmail.comslicc_includes = [] 9169219Spower.jg@gmail.comExport('slicc_includes') 9179219Spower.jg@gmail.com 9184202Sbinkertn@umich.edu# Walk the tree and execute all SConsopts scripts that wil add to the 9195863Snate@binkert.org# above variables 92010135SCurtis.Dunham@arm.comif GetOption('verbose'): 9218474Sgblack@eecs.umich.edu print "Reading SConsopts" 9225742Snate@binkert.orgfor bdir in [ base_dir ] + extras_dir_list: 9238268Ssteve.reinhardt@amd.com if not isdir(bdir): 9248268Ssteve.reinhardt@amd.com print "Error: directory '%s' does not exist" % bdir 9258268Ssteve.reinhardt@amd.com Exit(1) 9265742Snate@binkert.org for root, dirs, files in os.walk(bdir): 9275341Sstever@gmail.com if 'SConsopts' in files: 9288474Sgblack@eecs.umich.edu if GetOption('verbose'): 9298474Sgblack@eecs.umich.edu print "Reading", joinpath(root, 'SConsopts') 9305342Sstever@gmail.com SConscript(joinpath(root, 'SConsopts')) 9314202Sbinkertn@umich.edu 9324202Sbinkertn@umich.eduall_isa_list.sort() 93311308Santhony.gutierrez@amd.comall_gpu_isa_list.sort() 9344202Sbinkertn@umich.edu 9355863Snate@binkert.orgsticky_vars.AddVariables( 9365863Snate@binkert.org EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 93711308Santhony.gutierrez@amd.com EnumVariable('TARGET_GPU_ISA', 'Target GPU ISA', 'hsail', all_gpu_isa_list), 9386994Snate@binkert.org ListVariable('CPU_MODELS', 'CPU models', 9396994Snate@binkert.org sorted(n for n,m in CpuModel.dict.iteritems() if m.default), 94010319SAndreas.Sandberg@ARM.com sorted(CpuModel.dict.keys())), 9415863Snate@binkert.org BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 9425863Snate@binkert.org False), 9435863Snate@binkert.org BoolVariable('SS_COMPATIBLE_FP', 9445863Snate@binkert.org 'Make floating-point results compatible with SimpleScalar', 9455863Snate@binkert.org False), 9465863Snate@binkert.org BoolVariable('USE_SSE2', 9475863Snate@binkert.org 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 9485863Snate@binkert.org False), 9497840Snate@binkert.org BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), 9505863Snate@binkert.org BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 95112230Sgiacomo.travaglini@arm.com BoolVariable('USE_PNG', 'Enable support for PNG images', have_png), 95212230Sgiacomo.travaglini@arm.com BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', 95312230Sgiacomo.travaglini@arm.com False), 95412230Sgiacomo.travaglini@arm.com BoolVariable('USE_KVM', 'Enable hardware virtualized (KVM) CPU models', 95512230Sgiacomo.travaglini@arm.com have_kvm), 95612056Sgabeblack@google.com BoolVariable('USE_TUNTAP', 95712056Sgabeblack@google.com 'Enable using a tap device to bridge to the host network', 95812056Sgabeblack@google.com have_tuntap), 95911308Santhony.gutierrez@amd.com BoolVariable('BUILD_GPU', 'Build the compute-GPU model', False), 9609219Spower.jg@gmail.com EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None', 9619219Spower.jg@gmail.com all_protocols), 96211235Sandreas.sandberg@arm.com EnumVariable('BACKTRACE_IMPL', 'Post-mortem dump implementation', 96311235Sandreas.sandberg@arm.com backtrace_impls[-1], backtrace_impls) 9641869SN/A ) 9651858SN/A 9665863Snate@binkert.org# These variables get exported to #defines in config/*.hh (see src/SConscript). 96711308Santhony.gutierrez@amd.comexport_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 'TARGET_ISA', 'TARGET_GPU_ISA', 96812061Sjason@lowepower.com 'CP_ANNOTATE', 'USE_POSIX_CLOCK', 'USE_KVM', 'USE_TUNTAP', 96912230Sgiacomo.travaglini@arm.com 'PROTOCOL', 'HAVE_PROTOBUF', 'HAVE_PERF_ATTR_EXCLUDE_HOST', 97012230Sgiacomo.travaglini@arm.com 'USE_PNG'] 9711858SN/A 972955SN/A################################################### 973955SN/A# 9741869SN/A# Define a SCons builder for configuration flag headers. 9751869SN/A# 9761869SN/A################################################### 9771869SN/A 9781869SN/A# This function generates a config header file that #defines the 9795863Snate@binkert.org# variable symbol to the current variable setting (0 or 1). The source 9805863Snate@binkert.org# operands are the name of the variable and a Value node containing the 9815863Snate@binkert.org# value of the variable. 9821869SN/Adef build_config_file(target, source, env): 9835863Snate@binkert.org (variable, value) = [s.get_contents() for s in source] 9841869SN/A f = file(str(target[0]), 'w') 9855863Snate@binkert.org print >> f, '#define', variable, value 9861869SN/A f.close() 9871869SN/A return None 9881869SN/A 9891869SN/A# Combine the two functions into a scons Action object. 9908483Sgblack@eecs.umich.educonfig_action = MakeAction(build_config_file, Transform("CONFIG H", 2)) 9911869SN/A 9921869SN/A# The emitter munges the source & target node lists to reflect what 9931869SN/A# we're really doing. 9941869SN/Adef config_emitter(target, source, env): 9955863Snate@binkert.org # extract variable name from Builder arg 9965863Snate@binkert.org variable = str(target[0]) 9971869SN/A # True target is config header file 9985863Snate@binkert.org target = joinpath('config', variable.lower() + '.hh') 9995863Snate@binkert.org val = env[variable] 10003356Sbinkertn@umich.edu if isinstance(val, bool): 10013356Sbinkertn@umich.edu # Force value to 0/1 10023356Sbinkertn@umich.edu val = int(val) 10033356Sbinkertn@umich.edu elif isinstance(val, str): 10043356Sbinkertn@umich.edu val = '"' + val + '"' 10054781Snate@binkert.org 10065863Snate@binkert.org # Sources are variable name & value (packaged in SCons Value nodes) 10075863Snate@binkert.org return ([target], [Value(variable), Value(val)]) 10081869SN/A 10091869SN/Aconfig_builder = Builder(emitter = config_emitter, action = config_action) 10101869SN/A 10116121Snate@binkert.orgmain.Append(BUILDERS = { 'ConfigFile' : config_builder }) 10121869SN/A 101311982Sgabeblack@google.com################################################### 101411982Sgabeblack@google.com# 101511982Sgabeblack@google.com# Builders for static and shared partially linked object files. 101611982Sgabeblack@google.com# 101711982Sgabeblack@google.com################################################### 101811982Sgabeblack@google.com 101911982Sgabeblack@google.compartial_static_builder = Builder(action=SCons.Defaults.LinkAction, 102011982Sgabeblack@google.com src_suffix='$OBJSUFFIX', 102111982Sgabeblack@google.com src_builder=['StaticObject', 'Object'], 102211982Sgabeblack@google.com LINKFLAGS='$PLINKFLAGS', 102311982Sgabeblack@google.com LIBS='') 102411982Sgabeblack@google.com 102511982Sgabeblack@google.comdef partial_shared_emitter(target, source, env): 102611982Sgabeblack@google.com for tgt in target: 102711982Sgabeblack@google.com tgt.attributes.shared = 1 102811982Sgabeblack@google.com return (target, source) 102911982Sgabeblack@google.compartial_shared_builder = Builder(action=SCons.Defaults.ShLinkAction, 103011982Sgabeblack@google.com emitter=partial_shared_emitter, 103111982Sgabeblack@google.com src_suffix='$SHOBJSUFFIX', 103211982Sgabeblack@google.com src_builder='SharedObject', 103311982Sgabeblack@google.com SHLINKFLAGS='$PSHLINKFLAGS', 103411982Sgabeblack@google.com LIBS='') 103511982Sgabeblack@google.com 103611982Sgabeblack@google.commain.Append(BUILDERS = { 'PartialShared' : partial_shared_builder, 103711982Sgabeblack@google.com 'PartialStatic' : partial_static_builder }) 103811982Sgabeblack@google.com 103911978Sgabeblack@google.com# builds in ext are shared across all configs in the build root. 104011978Sgabeblack@google.comext_dir = abspath(joinpath(str(main.root), 'ext')) 104112034Sgabeblack@google.comext_build_dirs = [] 104211978Sgabeblack@google.comfor root, dirs, files in os.walk(ext_dir): 104311978Sgabeblack@google.com if 'SConscript' in files: 104411978Sgabeblack@google.com build_dir = os.path.relpath(root, ext_dir) 104512034Sgabeblack@google.com ext_build_dirs.append(build_dir) 104611978Sgabeblack@google.com main.SConscript(joinpath(root, 'SConscript'), 104711978Sgabeblack@google.com variant_dir=joinpath(build_root, build_dir)) 104810915Sandreas.sandberg@arm.com 104911986Sandreas.sandberg@arm.commain.Prepend(CPPPATH=Dir('ext/pybind11/include/')) 105011986Sandreas.sandberg@arm.com 10511869SN/A################################################### 10521869SN/A# 105312015Sgabeblack@google.com# This builder and wrapper method are used to set up a directory with 105412015Sgabeblack@google.com# switching headers. Those are headers which are in a generic location and 105512015Sgabeblack@google.com# that include more specific headers from a directory chosen at build time 105612015Sgabeblack@google.com# based on the current build settings. 10573546Sgblack@eecs.umich.edu# 10583546Sgblack@eecs.umich.edu################################################### 10593546Sgblack@eecs.umich.edu 106012015Sgabeblack@google.comdef build_switching_header(target, source, env): 106112015Sgabeblack@google.com path = str(target[0]) 106212015Sgabeblack@google.com subdir = str(source[0]) 106312015Sgabeblack@google.com dp, fp = os.path.split(path) 106412015Sgabeblack@google.com dp = os.path.relpath(os.path.realpath(dp), 106512015Sgabeblack@google.com os.path.realpath(env['BUILDDIR'])) 106612015Sgabeblack@google.com with open(path, 'w') as hdr: 106712015Sgabeblack@google.com print >>hdr, '#include "%s/%s/%s"' % (dp, subdir, fp) 10683546Sgblack@eecs.umich.edu 106912015Sgabeblack@google.comswitching_header_action = MakeAction(build_switching_header, 107012015Sgabeblack@google.com Transform('GENERATE')) 107110196SCurtis.Dunham@arm.com 107212015Sgabeblack@google.comswitching_header_builder = Builder(action=switching_header_action, 107312015Sgabeblack@google.com source_factory=Value, 107412015Sgabeblack@google.com single_source=True) 107512015Sgabeblack@google.com 107612015Sgabeblack@google.commain.Append(BUILDERS = { 'SwitchingHeader': switching_header_builder }) 107712015Sgabeblack@google.com 107812015Sgabeblack@google.comdef switching_headers(self, headers, source): 107912015Sgabeblack@google.com for header in headers: 108012015Sgabeblack@google.com self.SwitchingHeader(header, source) 108112015Sgabeblack@google.com 108212015Sgabeblack@google.commain.AddMethod(switching_headers, 'SwitchingHeaders') 10833546Sgblack@eecs.umich.edu 10843546Sgblack@eecs.umich.edu################################################### 10853546Sgblack@eecs.umich.edu# 1086955SN/A# Define build environments for selected configurations. 1087955SN/A# 1088955SN/A################################################### 1089955SN/A 10905863Snate@binkert.orgfor variant_path in variant_paths: 109110135SCurtis.Dunham@arm.com if not GetOption('silent'): 109210135SCurtis.Dunham@arm.com print "Building in", variant_path 10935343Sstever@gmail.com 10945343Sstever@gmail.com # Make a copy of the build-root environment to use for this config. 10956121Snate@binkert.org env = main.Clone() 10965863Snate@binkert.org env['BUILDDIR'] = variant_path 10974773Snate@binkert.org 10985863Snate@binkert.org # variant_dir is the tail component of build path, and is used to 10992632Sstever@eecs.umich.edu # determine the build parameters (e.g., 'ALPHA_SE') 11005863Snate@binkert.org (build_root, variant_dir) = splitpath(variant_path) 11012023SN/A 11025863Snate@binkert.org # Set env variables according to the build directory config. 11035863Snate@binkert.org sticky_vars.files = [] 11045863Snate@binkert.org # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 11055863Snate@binkert.org # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 11065863Snate@binkert.org # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 11075863Snate@binkert.org current_vars_file = joinpath(build_root, 'variables', variant_dir) 11085863Snate@binkert.org if isfile(current_vars_file): 11095863Snate@binkert.org sticky_vars.files.append(current_vars_file) 111010135SCurtis.Dunham@arm.com if not GetOption('silent'): 111110135SCurtis.Dunham@arm.com print "Using saved variables file %s" % current_vars_file 111212034Sgabeblack@google.com elif variant_dir in ext_build_dirs: 111312034Sgabeblack@google.com # Things in ext are built without a variant directory. 111412034Sgabeblack@google.com continue 11152632Sstever@eecs.umich.edu else: 11165863Snate@binkert.org # Build dir-specific variables file doesn't exist. 11172023SN/A 11182632Sstever@eecs.umich.edu # Make sure the directory is there so we can create it later 11195863Snate@binkert.org opt_dir = dirname(current_vars_file) 11205342Sstever@gmail.com if not isdir(opt_dir): 11215863Snate@binkert.org mkdir(opt_dir) 11222632Sstever@eecs.umich.edu 11235863Snate@binkert.org # Get default build variables from source tree. Variables are 11245863Snate@binkert.org # normally determined by name of $VARIANT_DIR, but can be 11258267Ssteve.reinhardt@amd.com # overridden by '--default=' arg on command line. 11268120Sgblack@eecs.umich.edu default = GetOption('default') 11278267Ssteve.reinhardt@amd.com opts_dir = joinpath(main.root.abspath, 'build_opts') 11288267Ssteve.reinhardt@amd.com if default: 11298267Ssteve.reinhardt@amd.com default_vars_files = [joinpath(build_root, 'variables', default), 11308267Ssteve.reinhardt@amd.com joinpath(opts_dir, default)] 11318267Ssteve.reinhardt@amd.com else: 11328267Ssteve.reinhardt@amd.com default_vars_files = [joinpath(opts_dir, variant_dir)] 11338267Ssteve.reinhardt@amd.com existing_files = filter(isfile, default_vars_files) 11348267Ssteve.reinhardt@amd.com if existing_files: 11358267Ssteve.reinhardt@amd.com default_vars_file = existing_files[0] 11365863Snate@binkert.org sticky_vars.files.append(default_vars_file) 11375863Snate@binkert.org print "Variables file %s not found,\n using defaults in %s" \ 11385863Snate@binkert.org % (current_vars_file, default_vars_file) 11392632Sstever@eecs.umich.edu else: 11408267Ssteve.reinhardt@amd.com print "Error: cannot find variables file %s or " \ 11418267Ssteve.reinhardt@amd.com "default file(s) %s" \ 11428267Ssteve.reinhardt@amd.com % (current_vars_file, ' or '.join(default_vars_files)) 11432632Sstever@eecs.umich.edu Exit(1) 11441888SN/A 11455863Snate@binkert.org # Apply current variable settings to env 11465863Snate@binkert.org sticky_vars.Update(env) 11471858SN/A 11488120Sgblack@eecs.umich.edu help_texts["local_vars"] += \ 11498120Sgblack@eecs.umich.edu "Build variables for %s:\n" % variant_dir \ 11507756SAli.Saidi@ARM.com + sticky_vars.GenerateHelpText(env) 11512598SN/A 11525863Snate@binkert.org # Process variable settings. 11531858SN/A 11541858SN/A if not have_fenv and env['USE_FENV']: 11551858SN/A print "Warning: <fenv.h> not available; " \ 11565863Snate@binkert.org "forcing USE_FENV to False in", variant_dir + "." 11571858SN/A env['USE_FENV'] = False 11581858SN/A 11591858SN/A if not env['USE_FENV']: 11605863Snate@binkert.org print "Warning: No IEEE FP rounding mode control in", variant_dir + "." 11611871SN/A print " FP results may deviate slightly from other platforms." 11621858SN/A 116312230Sgiacomo.travaglini@arm.com if not have_png and env['USE_PNG']: 116412230Sgiacomo.travaglini@arm.com print "Warning: <png.h> not available; " \ 116512230Sgiacomo.travaglini@arm.com "forcing USE_PNG to False in", variant_dir + "." 116612230Sgiacomo.travaglini@arm.com env['USE_PNG'] = False 116712230Sgiacomo.travaglini@arm.com 116812230Sgiacomo.travaglini@arm.com if env['USE_PNG']: 116912230Sgiacomo.travaglini@arm.com env.Append(LIBS=['png']) 117012230Sgiacomo.travaglini@arm.com 11711858SN/A if env['EFENCE']: 11721858SN/A env.Append(LIBS=['efence']) 11731858SN/A 11749651SAndreas.Sandberg@ARM.com if env['USE_KVM']: 11759651SAndreas.Sandberg@ARM.com if not have_kvm: 11769651SAndreas.Sandberg@ARM.com print "Warning: Can not enable KVM, host seems to lack KVM support" 11779651SAndreas.Sandberg@ARM.com env['USE_KVM'] = False 11789651SAndreas.Sandberg@ARM.com elif not is_isa_kvm_compatible(env['TARGET_ISA']): 11799651SAndreas.Sandberg@ARM.com print "Info: KVM support disabled due to unsupported host and " \ 11809651SAndreas.Sandberg@ARM.com "target ISA combination" 11819651SAndreas.Sandberg@ARM.com env['USE_KVM'] = False 11829651SAndreas.Sandberg@ARM.com 118312056Sgabeblack@google.com if env['USE_TUNTAP']: 118412056Sgabeblack@google.com if not have_tuntap: 118512056Sgabeblack@google.com print "Warning: Can't connect EtherTap with a tap device." 118612056Sgabeblack@google.com env['USE_TUNTAP'] = False 118712056Sgabeblack@google.com 118811798Santhony.gutierrez@amd.com if env['BUILD_GPU']: 118911798Santhony.gutierrez@amd.com env.Append(CPPDEFINES=['BUILD_GPU']) 119011798Santhony.gutierrez@amd.com 11919986Sandreas@sandberg.pp.se # Warn about missing optional functionality 11929986Sandreas@sandberg.pp.se if env['USE_KVM']: 11939986Sandreas@sandberg.pp.se if not main['HAVE_PERF_ATTR_EXCLUDE_HOST']: 11949986Sandreas@sandberg.pp.se print "Warning: perf_event headers lack support for the " \ 11959986Sandreas@sandberg.pp.se "exclude_host attribute. KVM instruction counts will " \ 11969986Sandreas@sandberg.pp.se "be inaccurate." 11979986Sandreas@sandberg.pp.se 11985863Snate@binkert.org # Save sticky variable settings back to current variables file 11995863Snate@binkert.org sticky_vars.Save(current_vars_file, env) 12001869SN/A 12011965SN/A if env['USE_SSE2']: 12027739Sgblack@eecs.umich.edu env.Append(CCFLAGS=['-msse2']) 12031965SN/A 12042761Sstever@eecs.umich.edu # The src/SConscript file sets up the build rules in 'env' according 12055863Snate@binkert.org # to the configured variables. It returns a list of environments, 12061869SN/A # one for each variant build (debug, opt, etc.) 120710196SCurtis.Dunham@arm.com SConscript('src/SConscript', variant_dir = variant_path, exports = 'env') 12081869SN/A 12098120Sgblack@eecs.umich.edu# base help text 12108120Sgblack@eecs.umich.eduHelp(''' 12118120Sgblack@eecs.umich.eduUsage: scons [scons options] [build variables] [target(s)] 12128120Sgblack@eecs.umich.edu 12138120Sgblack@eecs.umich.eduExtra scons options: 12148120Sgblack@eecs.umich.edu%(options)s 12158120Sgblack@eecs.umich.edu 12168120Sgblack@eecs.umich.eduGlobal build variables: 12178120Sgblack@eecs.umich.edu%(global_vars)s 12188120Sgblack@eecs.umich.edu 12198120Sgblack@eecs.umich.edu%(local_vars)s 12208120Sgblack@eecs.umich.edu''' % help_texts) 1221