SConstruct revision 9888
1955SN/A# -*- mode:python -*-
2955SN/A
39812Sandreas.hansson@arm.com# Copyright (c) 2013 ARM Limited
49812Sandreas.hansson@arm.com# All rights reserved.
59812Sandreas.hansson@arm.com#
69812Sandreas.hansson@arm.com# The license below extends only to copyright in the software and shall
79812Sandreas.hansson@arm.com# not be construed as granting a license to any other intellectual
89812Sandreas.hansson@arm.com# property including but not limited to intellectual property relating
99812Sandreas.hansson@arm.com# to a hardware implementation of the functionality of the software
109812Sandreas.hansson@arm.com# licensed hereunder.  You may use the software subject to the license
119812Sandreas.hansson@arm.com# terms below provided that you ensure that this notice is replicated
129812Sandreas.hansson@arm.com# unmodified and in its entirety in all distributions of the software,
139812Sandreas.hansson@arm.com# modified or unmodified, in source code or in binary form.
149812Sandreas.hansson@arm.com#
157816Ssteve.reinhardt@amd.com# Copyright (c) 2011 Advanced Micro Devices, Inc.
165871Snate@binkert.org# Copyright (c) 2009 The Hewlett-Packard Development Company
171762SN/A# Copyright (c) 2004-2005 The Regents of The University of Michigan
18955SN/A# All rights reserved.
19955SN/A#
20955SN/A# Redistribution and use in source and binary forms, with or without
21955SN/A# modification, are permitted provided that the following conditions are
22955SN/A# met: redistributions of source code must retain the above copyright
23955SN/A# notice, this list of conditions and the following disclaimer;
24955SN/A# redistributions in binary form must reproduce the above copyright
25955SN/A# notice, this list of conditions and the following disclaimer in the
26955SN/A# documentation and/or other materials provided with the distribution;
27955SN/A# neither the name of the copyright holders nor the names of its
28955SN/A# contributors may be used to endorse or promote products derived from
29955SN/A# this software without specific prior written permission.
30955SN/A#
31955SN/A# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32955SN/A# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33955SN/A# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
34955SN/A# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35955SN/A# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
36955SN/A# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
37955SN/A# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
38955SN/A# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
39955SN/A# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
40955SN/A# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
41955SN/A# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
422665Ssaidi@eecs.umich.edu#
432665Ssaidi@eecs.umich.edu# Authors: Steve Reinhardt
445863Snate@binkert.org#          Nathan Binkert
45955SN/A
46955SN/A###################################################
47955SN/A#
48955SN/A# SCons top-level build description (SConstruct) file.
49955SN/A#
508878Ssteve.reinhardt@amd.com# While in this directory ('gem5'), just type 'scons' to build the default
512632Sstever@eecs.umich.edu# configuration (see below), or type 'scons build/<CONFIG>/<binary>'
528878Ssteve.reinhardt@amd.com# to build some other configuration (e.g., 'build/ALPHA/gem5.opt' for
532632Sstever@eecs.umich.edu# the optimized full-system version).
54955SN/A#
558878Ssteve.reinhardt@amd.com# You can build gem5 in a different directory as long as there is a
562632Sstever@eecs.umich.edu# 'build/<CONFIG>' somewhere along the target path.  The build system
572761Sstever@eecs.umich.edu# expects that all configs under the same build directory are being
582632Sstever@eecs.umich.edu# built for the same host system.
592632Sstever@eecs.umich.edu#
602632Sstever@eecs.umich.edu# Examples:
612761Sstever@eecs.umich.edu#
622761Sstever@eecs.umich.edu#   The following two commands are equivalent.  The '-u' option tells
632761Sstever@eecs.umich.edu#   scons to search up the directory tree for this SConstruct file.
648878Ssteve.reinhardt@amd.com#   % cd <path-to-src>/gem5 ; scons build/ALPHA/gem5.debug
658878Ssteve.reinhardt@amd.com#   % cd <path-to-src>/gem5/build/ALPHA; scons -u gem5.debug
662761Sstever@eecs.umich.edu#
672761Sstever@eecs.umich.edu#   The following two commands are equivalent and demonstrate building
682761Sstever@eecs.umich.edu#   in a directory outside of the source tree.  The '-C' option tells
692761Sstever@eecs.umich.edu#   scons to chdir to the specified directory to find this SConstruct
702761Sstever@eecs.umich.edu#   file.
718878Ssteve.reinhardt@amd.com#   % cd <path-to-src>/gem5 ; scons /local/foo/build/ALPHA/gem5.debug
728878Ssteve.reinhardt@amd.com#   % cd /local/foo/build/ALPHA; scons -C <path-to-src>/gem5 gem5.debug
732632Sstever@eecs.umich.edu#
742632Sstever@eecs.umich.edu# You can use 'scons -H' to print scons options.  If you're in this
758878Ssteve.reinhardt@amd.com# 'gem5' directory (or use -u or -C to tell scons where to find this
768878Ssteve.reinhardt@amd.com# file), you can use 'scons -h' to print all the gem5-specific build
772632Sstever@eecs.umich.edu# options as well.
78955SN/A#
79955SN/A###################################################
80955SN/A
815863Snate@binkert.org# Check for recent-enough Python and SCons versions.
825863Snate@binkert.orgtry:
835863Snate@binkert.org    # Really old versions of scons only take two options for the
845863Snate@binkert.org    # function, so check once without the revision and once with the
855863Snate@binkert.org    # revision, the first instance will fail for stuff other than
865863Snate@binkert.org    # 0.98, and the second will fail for 0.98.0
875863Snate@binkert.org    EnsureSConsVersion(0, 98)
885863Snate@binkert.org    EnsureSConsVersion(0, 98, 1)
895863Snate@binkert.orgexcept SystemExit, e:
905863Snate@binkert.org    print """
915863Snate@binkert.orgFor more details, see:
928878Ssteve.reinhardt@amd.com    http://gem5.org/Dependencies
935863Snate@binkert.org"""
945863Snate@binkert.org    raise
955863Snate@binkert.org
969812Sandreas.hansson@arm.com# We ensure the python version early because because python-config
979812Sandreas.hansson@arm.com# requires python 2.5
985863Snate@binkert.orgtry:
999812Sandreas.hansson@arm.com    EnsurePythonVersion(2, 5)
1005863Snate@binkert.orgexcept SystemExit, e:
1015863Snate@binkert.org    print """
1025863Snate@binkert.orgYou can use a non-default installation of the Python interpreter by
1039812Sandreas.hansson@arm.comrearranging your PATH so that scons finds the non-default 'python' and
1049812Sandreas.hansson@arm.com'python-config' first.
1055863Snate@binkert.org
1065863Snate@binkert.orgFor more details, see:
1078878Ssteve.reinhardt@amd.com    http://gem5.org/wiki/index.php/Using_a_non-default_Python_installation
1085863Snate@binkert.org"""
1095863Snate@binkert.org    raise
1105863Snate@binkert.org
1116654Snate@binkert.org# Global Python includes
112955SN/Aimport os
1135396Ssaidi@eecs.umich.eduimport re
1145863Snate@binkert.orgimport subprocess
1155863Snate@binkert.orgimport sys
1164202Sbinkertn@umich.edu
1175863Snate@binkert.orgfrom os import mkdir, environ
1185863Snate@binkert.orgfrom os.path import abspath, basename, dirname, expanduser, normpath
1195863Snate@binkert.orgfrom os.path import exists,  isdir, isfile
1205863Snate@binkert.orgfrom os.path import join as joinpath, split as splitpath
121955SN/A
1226654Snate@binkert.org# SCons includes
1235273Sstever@gmail.comimport SCons
1245871Snate@binkert.orgimport SCons.Node
1255273Sstever@gmail.com
1266655Snate@binkert.orgextra_python_paths = [
1278878Ssteve.reinhardt@amd.com    Dir('src/python').srcnode().abspath, # gem5 includes
1286655Snate@binkert.org    Dir('ext/ply').srcnode().abspath, # ply is used by several files
1296655Snate@binkert.org    ]
1309219Spower.jg@gmail.com
1316655Snate@binkert.orgsys.path[1:1] = extra_python_paths
1325871Snate@binkert.org
1336654Snate@binkert.orgfrom m5.util import compareVersions, readCommand
1348947Sandreas.hansson@arm.comfrom m5.util.terminal import get_termcap
1355396Ssaidi@eecs.umich.edu
1368120Sgblack@eecs.umich.eduhelp_texts = {
1378120Sgblack@eecs.umich.edu    "options" : "",
1388120Sgblack@eecs.umich.edu    "global_vars" : "",
1398120Sgblack@eecs.umich.edu    "local_vars" : ""
1408120Sgblack@eecs.umich.edu}
1418120Sgblack@eecs.umich.edu
1428120Sgblack@eecs.umich.eduExport("help_texts")
1438120Sgblack@eecs.umich.edu
1448879Ssteve.reinhardt@amd.com
1458879Ssteve.reinhardt@amd.com# There's a bug in scons in that (1) by default, the help texts from
1468879Ssteve.reinhardt@amd.com# AddOption() are supposed to be displayed when you type 'scons -h'
1478879Ssteve.reinhardt@amd.com# and (2) you can override the help displayed by 'scons -h' using the
1488879Ssteve.reinhardt@amd.com# Help() function, but these two features are incompatible: once
1498879Ssteve.reinhardt@amd.com# you've overridden the help text using Help(), there's no way to get
1508879Ssteve.reinhardt@amd.com# at the help texts from AddOptions.  See:
1518879Ssteve.reinhardt@amd.com#     http://scons.tigris.org/issues/show_bug.cgi?id=2356
1528879Ssteve.reinhardt@amd.com#     http://scons.tigris.org/issues/show_bug.cgi?id=2611
1538879Ssteve.reinhardt@amd.com# This hack lets us extract the help text from AddOptions and
1548879Ssteve.reinhardt@amd.com# re-inject it via Help().  Ideally someday this bug will be fixed and
1558879Ssteve.reinhardt@amd.com# we can just use AddOption directly.
1568879Ssteve.reinhardt@amd.comdef AddLocalOption(*args, **kwargs):
1578120Sgblack@eecs.umich.edu    col_width = 30
1588120Sgblack@eecs.umich.edu
1598120Sgblack@eecs.umich.edu    help = "  " + ", ".join(args)
1608120Sgblack@eecs.umich.edu    if "help" in kwargs:
1618120Sgblack@eecs.umich.edu        length = len(help)
1628120Sgblack@eecs.umich.edu        if length >= col_width:
1638120Sgblack@eecs.umich.edu            help += "\n" + " " * col_width
1648120Sgblack@eecs.umich.edu        else:
1658120Sgblack@eecs.umich.edu            help += " " * (col_width - length)
1668120Sgblack@eecs.umich.edu        help += kwargs["help"]
1678120Sgblack@eecs.umich.edu    help_texts["options"] += help + "\n"
1688120Sgblack@eecs.umich.edu
1698120Sgblack@eecs.umich.edu    AddOption(*args, **kwargs)
1708120Sgblack@eecs.umich.edu
1718879Ssteve.reinhardt@amd.comAddLocalOption('--colors', dest='use_colors', action='store_true',
1728879Ssteve.reinhardt@amd.com               help="Add color to abbreviated scons output")
1738879Ssteve.reinhardt@amd.comAddLocalOption('--no-colors', dest='use_colors', action='store_false',
1748879Ssteve.reinhardt@amd.com               help="Don't add color to abbreviated scons output")
1758879Ssteve.reinhardt@amd.comAddLocalOption('--default', dest='default', type='string', action='store',
1768879Ssteve.reinhardt@amd.com               help='Override which build_opts file to use for defaults')
1778879Ssteve.reinhardt@amd.comAddLocalOption('--ignore-style', dest='ignore_style', action='store_true',
1788879Ssteve.reinhardt@amd.com               help='Disable style checking hooks')
1799227Sandreas.hansson@arm.comAddLocalOption('--no-lto', dest='no_lto', action='store_true',
1809227Sandreas.hansson@arm.com               help='Disable Link-Time Optimization for fast')
1818879Ssteve.reinhardt@amd.comAddLocalOption('--update-ref', dest='update_ref', action='store_true',
1828879Ssteve.reinhardt@amd.com               help='Update test reference outputs')
1838879Ssteve.reinhardt@amd.comAddLocalOption('--verbose', dest='verbose', action='store_true',
1848879Ssteve.reinhardt@amd.com               help='Print full tool command lines')
1858120Sgblack@eecs.umich.edu
1868947Sandreas.hansson@arm.comtermcap = get_termcap(GetOption('use_colors'))
1877816Ssteve.reinhardt@amd.com
1885871Snate@binkert.org########################################################################
1895871Snate@binkert.org#
1906121Snate@binkert.org# Set up the main build environment.
1915871Snate@binkert.org#
1925871Snate@binkert.org########################################################################
1939119Sandreas.hansson@arm.comuse_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH',
1949396Sandreas.hansson@arm.com                 'LIBRARY_PATH', 'PATH', 'PKG_CONFIG_PATH', 'PYTHONPATH',
1959396Sandreas.hansson@arm.com                 'RANLIB', 'SWIG' ])
196955SN/A
1979416SAndreas.Sandberg@ARM.comuse_prefixes = [
1989416SAndreas.Sandberg@ARM.com    "M5",           # M5 configuration (e.g., path to kernels)
1999416SAndreas.Sandberg@ARM.com    "DISTCC_",      # distcc (distributed compiler wrapper) configuration
2009416SAndreas.Sandberg@ARM.com    "CCACHE_",      # ccache (caching compiler wrapper) configuration
2019416SAndreas.Sandberg@ARM.com    "CCC_",         # clang static analyzer configuration
2029416SAndreas.Sandberg@ARM.com    ]
2039416SAndreas.Sandberg@ARM.com
2045871Snate@binkert.orguse_env = {}
2055871Snate@binkert.orgfor key,val in os.environ.iteritems():
2069416SAndreas.Sandberg@ARM.com    if key in use_vars or \
2079416SAndreas.Sandberg@ARM.com            any([key.startswith(prefix) for prefix in use_prefixes]):
2085871Snate@binkert.org        use_env[key] = val
209955SN/A
2106121Snate@binkert.orgmain = Environment(ENV=use_env)
2118881Smarc.orr@gmail.commain.Decider('MD5-timestamp')
2126121Snate@binkert.orgmain.root = Dir(".")         # The current directory (where this file lives).
2136121Snate@binkert.orgmain.srcdir = Dir("src")     # The source directory
2141533SN/A
2159239Sandreas.hansson@arm.commain_dict_keys = main.Dictionary().keys()
2169239Sandreas.hansson@arm.com
2179239Sandreas.hansson@arm.com# Check that we have a C/C++ compiler
2189239Sandreas.hansson@arm.comif not ('CC' in main_dict_keys and 'CXX' in main_dict_keys):
2199239Sandreas.hansson@arm.com    print "No C++ compiler installed (package g++ on Ubuntu and RedHat)"
2209239Sandreas.hansson@arm.com    Exit(1)
2219239Sandreas.hansson@arm.com
2229239Sandreas.hansson@arm.com# Check that swig is present
2239239Sandreas.hansson@arm.comif not 'SWIG' in main_dict_keys:
2249239Sandreas.hansson@arm.com    print "swig is not installed (package swig on Ubuntu and RedHat)"
2259239Sandreas.hansson@arm.com    Exit(1)
2269239Sandreas.hansson@arm.com
2276655Snate@binkert.org# add useful python code PYTHONPATH so it can be used by subprocesses
2286655Snate@binkert.org# as well
2296655Snate@binkert.orgmain.AppendENVPath('PYTHONPATH', extra_python_paths)
2306655Snate@binkert.org
2315871Snate@binkert.org########################################################################
2325871Snate@binkert.org#
2335863Snate@binkert.org# Mercurial Stuff.
2345871Snate@binkert.org#
2358878Ssteve.reinhardt@amd.com# If the gem5 directory is a mercurial repository, we should do some
2365871Snate@binkert.org# extra things.
2375871Snate@binkert.org#
2385871Snate@binkert.org########################################################################
2395863Snate@binkert.org
2406121Snate@binkert.orghgdir = main.root.Dir(".hg")
2415863Snate@binkert.org
2425871Snate@binkert.orgmercurial_style_message = """
2438336Ssteve.reinhardt@amd.comYou're missing the gem5 style hook, which automatically checks your code
2448336Ssteve.reinhardt@amd.comagainst the gem5 style rules on hg commit and qrefresh commands.  This
2458336Ssteve.reinhardt@amd.comscript will now install the hook in your .hg/hgrc file.
2468336Ssteve.reinhardt@amd.comPress enter to continue, or ctrl-c to abort: """
2474678Snate@binkert.org
2488336Ssteve.reinhardt@amd.commercurial_style_hook = """
2498336Ssteve.reinhardt@amd.com# The following lines were automatically added by gem5/SConstruct
2508336Ssteve.reinhardt@amd.com# to provide the gem5 style-checking hooks
2514678Snate@binkert.org[extensions]
2524678Snate@binkert.orgstyle = %s/util/style.py
2534678Snate@binkert.org
2544678Snate@binkert.org[hooks]
2557827Snate@binkert.orgpretxncommit.style = python:style.check_style
2567827Snate@binkert.orgpre-qrefresh.style = python:style.check_style
2578336Ssteve.reinhardt@amd.com# End of SConstruct additions
2584678Snate@binkert.org
2598336Ssteve.reinhardt@amd.com""" % (main.root.abspath)
2608336Ssteve.reinhardt@amd.com
2618336Ssteve.reinhardt@amd.commercurial_lib_not_found = """
2628336Ssteve.reinhardt@amd.comMercurial libraries cannot be found, ignoring style hook.  If
2638336Ssteve.reinhardt@amd.comyou are a gem5 developer, please fix this and run the style
2648336Ssteve.reinhardt@amd.comhook. It is important.
2655871Snate@binkert.org"""
2665871Snate@binkert.org
2678336Ssteve.reinhardt@amd.com# Check for style hook and prompt for installation if it's not there.
2688336Ssteve.reinhardt@amd.com# Skip this if --ignore-style was specified, there's no .hg dir to
2698336Ssteve.reinhardt@amd.com# install a hook in, or there's no interactive terminal to prompt.
2708336Ssteve.reinhardt@amd.comif not GetOption('ignore_style') and hgdir.exists() and sys.stdin.isatty():
2718336Ssteve.reinhardt@amd.com    style_hook = True
2725871Snate@binkert.org    try:
2738336Ssteve.reinhardt@amd.com        from mercurial import ui
2748336Ssteve.reinhardt@amd.com        ui = ui.ui()
2758336Ssteve.reinhardt@amd.com        ui.readconfig(hgdir.File('hgrc').abspath)
2768336Ssteve.reinhardt@amd.com        style_hook = ui.config('hooks', 'pretxncommit.style', None) and \
2778336Ssteve.reinhardt@amd.com                     ui.config('hooks', 'pre-qrefresh.style', None)
2784678Snate@binkert.org    except ImportError:
2795871Snate@binkert.org        print mercurial_lib_not_found
2804678Snate@binkert.org
2818336Ssteve.reinhardt@amd.com    if not style_hook:
2828336Ssteve.reinhardt@amd.com        print mercurial_style_message,
2838336Ssteve.reinhardt@amd.com        # continue unless user does ctrl-c/ctrl-d etc.
2848336Ssteve.reinhardt@amd.com        try:
2858336Ssteve.reinhardt@amd.com            raw_input()
2868336Ssteve.reinhardt@amd.com        except:
2878336Ssteve.reinhardt@amd.com            print "Input exception, exiting scons.\n"
2888336Ssteve.reinhardt@amd.com            sys.exit(1)
2898336Ssteve.reinhardt@amd.com        hgrc_path = '%s/.hg/hgrc' % main.root.abspath
2908336Ssteve.reinhardt@amd.com        print "Adding style hook to", hgrc_path, "\n"
2918336Ssteve.reinhardt@amd.com        try:
2928336Ssteve.reinhardt@amd.com            hgrc = open(hgrc_path, 'a')
2938336Ssteve.reinhardt@amd.com            hgrc.write(mercurial_style_hook)
2948336Ssteve.reinhardt@amd.com            hgrc.close()
2958336Ssteve.reinhardt@amd.com        except:
2968336Ssteve.reinhardt@amd.com            print "Error updating", hgrc_path
2978336Ssteve.reinhardt@amd.com            sys.exit(1)
2985871Snate@binkert.org
2996121Snate@binkert.org
300955SN/A###################################################
301955SN/A#
3022632Sstever@eecs.umich.edu# Figure out which configurations to set up based on the path(s) of
3032632Sstever@eecs.umich.edu# the target(s).
304955SN/A#
305955SN/A###################################################
306955SN/A
307955SN/A# Find default configuration & binary.
3088878Ssteve.reinhardt@amd.comDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA/gem5.debug'))
309955SN/A
3102632Sstever@eecs.umich.edu# helper function: find last occurrence of element in list
3112632Sstever@eecs.umich.edudef rfind(l, elt, offs = -1):
3122632Sstever@eecs.umich.edu    for i in range(len(l)+offs, 0, -1):
3132632Sstever@eecs.umich.edu        if l[i] == elt:
3142632Sstever@eecs.umich.edu            return i
3152632Sstever@eecs.umich.edu    raise ValueError, "element not found"
3162632Sstever@eecs.umich.edu
3178268Ssteve.reinhardt@amd.com# Take a list of paths (or SCons Nodes) and return a list with all
3188268Ssteve.reinhardt@amd.com# paths made absolute and ~-expanded.  Paths will be interpreted
3198268Ssteve.reinhardt@amd.com# relative to the launch directory unless a different root is provided
3208268Ssteve.reinhardt@amd.comdef makePathListAbsolute(path_list, root=GetLaunchDir()):
3218268Ssteve.reinhardt@amd.com    return [abspath(joinpath(root, expanduser(str(p))))
3228268Ssteve.reinhardt@amd.com            for p in path_list]
3238268Ssteve.reinhardt@amd.com
3242632Sstever@eecs.umich.edu# Each target must have 'build' in the interior of the path; the
3252632Sstever@eecs.umich.edu# directory below this will determine the build parameters.  For
3262632Sstever@eecs.umich.edu# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we
3272632Sstever@eecs.umich.edu# recognize that ALPHA_SE specifies the configuration because it
3288268Ssteve.reinhardt@amd.com# follow 'build' in the build path.
3292632Sstever@eecs.umich.edu
3308268Ssteve.reinhardt@amd.com# The funky assignment to "[:]" is needed to replace the list contents
3318268Ssteve.reinhardt@amd.com# in place rather than reassign the symbol to a new list, which
3328268Ssteve.reinhardt@amd.com# doesn't work (obviously!).
3338268Ssteve.reinhardt@amd.comBUILD_TARGETS[:] = makePathListAbsolute(BUILD_TARGETS)
3343718Sstever@eecs.umich.edu
3352634Sstever@eecs.umich.edu# Generate a list of the unique build roots and configs that the
3362634Sstever@eecs.umich.edu# collected targets reference.
3375863Snate@binkert.orgvariant_paths = []
3382638Sstever@eecs.umich.edubuild_root = None
3398268Ssteve.reinhardt@amd.comfor t in BUILD_TARGETS:
3402632Sstever@eecs.umich.edu    path_dirs = t.split('/')
3412632Sstever@eecs.umich.edu    try:
3422632Sstever@eecs.umich.edu        build_top = rfind(path_dirs, 'build', -2)
3432632Sstever@eecs.umich.edu    except:
3442632Sstever@eecs.umich.edu        print "Error: no non-leaf 'build' dir found on target path", t
3451858SN/A        Exit(1)
3463716Sstever@eecs.umich.edu    this_build_root = joinpath('/',*path_dirs[:build_top+1])
3472638Sstever@eecs.umich.edu    if not build_root:
3482638Sstever@eecs.umich.edu        build_root = this_build_root
3492638Sstever@eecs.umich.edu    else:
3502638Sstever@eecs.umich.edu        if this_build_root != build_root:
3512638Sstever@eecs.umich.edu            print "Error: build targets not under same build root\n"\
3522638Sstever@eecs.umich.edu                  "  %s\n  %s" % (build_root, this_build_root)
3532638Sstever@eecs.umich.edu            Exit(1)
3545863Snate@binkert.org    variant_path = joinpath('/',*path_dirs[:build_top+2])
3555863Snate@binkert.org    if variant_path not in variant_paths:
3565863Snate@binkert.org        variant_paths.append(variant_path)
357955SN/A
3585341Sstever@gmail.com# Make sure build_root exists (might not if this is the first build there)
3595341Sstever@gmail.comif not isdir(build_root):
3605863Snate@binkert.org    mkdir(build_root)
3617756SAli.Saidi@ARM.commain['BUILDROOT'] = build_root
3625341Sstever@gmail.com
3636121Snate@binkert.orgExport('main')
3644494Ssaidi@eecs.umich.edu
3656121Snate@binkert.orgmain.SConsignFile(joinpath(build_root, "sconsign"))
3661105SN/A
3672667Sstever@eecs.umich.edu# Default duplicate option is to use hard links, but this messes up
3682667Sstever@eecs.umich.edu# when you use emacs to edit a file in the target dir, as emacs moves
3692667Sstever@eecs.umich.edu# file to file~ then copies to file, breaking the link.  Symbolic
3702667Sstever@eecs.umich.edu# (soft) links work better.
3716121Snate@binkert.orgmain.SetOption('duplicate', 'soft-copy')
3722667Sstever@eecs.umich.edu
3735341Sstever@gmail.com#
3745863Snate@binkert.org# Set up global sticky variables... these are common to an entire build
3755341Sstever@gmail.com# tree (not specific to a particular build like ALPHA_SE)
3765341Sstever@gmail.com#
3775341Sstever@gmail.com
3788120Sgblack@eecs.umich.eduglobal_vars_file = joinpath(build_root, 'variables.global')
3795341Sstever@gmail.com
3808120Sgblack@eecs.umich.eduglobal_vars = Variables(global_vars_file, args=ARGUMENTS)
3815341Sstever@gmail.com
3828120Sgblack@eecs.umich.eduglobal_vars.AddVariables(
3836121Snate@binkert.org    ('CC', 'C compiler', environ.get('CC', main['CC'])),
3846121Snate@binkert.org    ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])),
3858980Ssteve.reinhardt@amd.com    ('SWIG', 'SWIG tool', environ.get('SWIG', main['SWIG'])),
3869396Sandreas.hansson@arm.com    ('PROTOC', 'protoc tool', environ.get('PROTOC', 'protoc')),
3875397Ssaidi@eecs.umich.edu    ('BATCH', 'Use batch pool for build and tests', False),
3885397Ssaidi@eecs.umich.edu    ('BATCH_CMD', 'Batch pool submission command name', 'qdo'),
3897727SAli.Saidi@ARM.com    ('M5_BUILD_CACHE', 'Cache built objects in this directory', False),
3908268Ssteve.reinhardt@amd.com    ('EXTRAS', 'Add extra directories to the compilation', '')
3916168Snate@binkert.org    )
3925341Sstever@gmail.com
3938120Sgblack@eecs.umich.edu# Update main environment with values from ARGUMENTS & global_vars_file
3948120Sgblack@eecs.umich.eduglobal_vars.Update(main)
3958120Sgblack@eecs.umich.eduhelp_texts["global_vars"] += global_vars.GenerateHelpText(main)
3966814Sgblack@eecs.umich.edu
3975863Snate@binkert.org# Save sticky variable settings back to current variables file
3988120Sgblack@eecs.umich.eduglobal_vars.Save(global_vars_file, main)
3995341Sstever@gmail.com
4005863Snate@binkert.org# Parse EXTRAS variable to build list of all directories where we're
4018268Ssteve.reinhardt@amd.com# look for sources etc.  This list is exported as extras_dir_list.
4026121Snate@binkert.orgbase_dir = main.srcdir.abspath
4036121Snate@binkert.orgif main['EXTRAS']:
4048268Ssteve.reinhardt@amd.com    extras_dir_list = makePathListAbsolute(main['EXTRAS'].split(':'))
4055742Snate@binkert.orgelse:
4065742Snate@binkert.org    extras_dir_list = []
4075341Sstever@gmail.com
4085742Snate@binkert.orgExport('base_dir')
4095742Snate@binkert.orgExport('extras_dir_list')
4105341Sstever@gmail.com
4116017Snate@binkert.org# the ext directory should be on the #includes path
4126121Snate@binkert.orgmain.Append(CPPPATH=[Dir('ext')])
4136017Snate@binkert.org
4147816Ssteve.reinhardt@amd.comdef strip_build_path(path, env):
4157756SAli.Saidi@ARM.com    path = str(path)
4167756SAli.Saidi@ARM.com    variant_base = env['BUILDROOT'] + os.path.sep
4177756SAli.Saidi@ARM.com    if path.startswith(variant_base):
4187756SAli.Saidi@ARM.com        path = path[len(variant_base):]
4197756SAli.Saidi@ARM.com    elif path.startswith('build/'):
4207756SAli.Saidi@ARM.com        path = path[6:]
4217756SAli.Saidi@ARM.com    return path
4227756SAli.Saidi@ARM.com
4237816Ssteve.reinhardt@amd.com# Generate a string of the form:
4247816Ssteve.reinhardt@amd.com#   common/path/prefix/src1, src2 -> tgt1, tgt2
4257816Ssteve.reinhardt@amd.com# to print while building.
4267816Ssteve.reinhardt@amd.comclass Transform(object):
4277816Ssteve.reinhardt@amd.com    # all specific color settings should be here and nowhere else
4287816Ssteve.reinhardt@amd.com    tool_color = termcap.Normal
4297816Ssteve.reinhardt@amd.com    pfx_color = termcap.Yellow
4307816Ssteve.reinhardt@amd.com    srcs_color = termcap.Yellow + termcap.Bold
4317816Ssteve.reinhardt@amd.com    arrow_color = termcap.Blue + termcap.Bold
4327816Ssteve.reinhardt@amd.com    tgts_color = termcap.Yellow + termcap.Bold
4337756SAli.Saidi@ARM.com
4347816Ssteve.reinhardt@amd.com    def __init__(self, tool, max_sources=99):
4357816Ssteve.reinhardt@amd.com        self.format = self.tool_color + (" [%8s] " % tool) \
4367816Ssteve.reinhardt@amd.com                      + self.pfx_color + "%s" \
4377816Ssteve.reinhardt@amd.com                      + self.srcs_color + "%s" \
4387816Ssteve.reinhardt@amd.com                      + self.arrow_color + " -> " \
4397816Ssteve.reinhardt@amd.com                      + self.tgts_color + "%s" \
4407816Ssteve.reinhardt@amd.com                      + termcap.Normal
4417816Ssteve.reinhardt@amd.com        self.max_sources = max_sources
4427816Ssteve.reinhardt@amd.com
4437816Ssteve.reinhardt@amd.com    def __call__(self, target, source, env, for_signature=None):
4447816Ssteve.reinhardt@amd.com        # truncate source list according to max_sources param
4457816Ssteve.reinhardt@amd.com        source = source[0:self.max_sources]
4467816Ssteve.reinhardt@amd.com        def strip(f):
4477816Ssteve.reinhardt@amd.com            return strip_build_path(str(f), env)
4487816Ssteve.reinhardt@amd.com        if len(source) > 0:
4497816Ssteve.reinhardt@amd.com            srcs = map(strip, source)
4507816Ssteve.reinhardt@amd.com        else:
4517816Ssteve.reinhardt@amd.com            srcs = ['']
4527816Ssteve.reinhardt@amd.com        tgts = map(strip, target)
4537816Ssteve.reinhardt@amd.com        # surprisingly, os.path.commonprefix is a dumb char-by-char string
4547816Ssteve.reinhardt@amd.com        # operation that has nothing to do with paths.
4557816Ssteve.reinhardt@amd.com        com_pfx = os.path.commonprefix(srcs + tgts)
4567816Ssteve.reinhardt@amd.com        com_pfx_len = len(com_pfx)
4577816Ssteve.reinhardt@amd.com        if com_pfx:
4587816Ssteve.reinhardt@amd.com            # do some cleanup and sanity checking on common prefix
4597816Ssteve.reinhardt@amd.com            if com_pfx[-1] == ".":
4607816Ssteve.reinhardt@amd.com                # prefix matches all but file extension: ok
4617816Ssteve.reinhardt@amd.com                # back up one to change 'foo.cc -> o' to 'foo.cc -> .o'
4627816Ssteve.reinhardt@amd.com                com_pfx = com_pfx[0:-1]
4637816Ssteve.reinhardt@amd.com            elif com_pfx[-1] == "/":
4647816Ssteve.reinhardt@amd.com                # common prefix is directory path: OK
4657816Ssteve.reinhardt@amd.com                pass
4667816Ssteve.reinhardt@amd.com            else:
4677816Ssteve.reinhardt@amd.com                src0_len = len(srcs[0])
4687816Ssteve.reinhardt@amd.com                tgt0_len = len(tgts[0])
4697816Ssteve.reinhardt@amd.com                if src0_len == com_pfx_len:
4707816Ssteve.reinhardt@amd.com                    # source is a substring of target, OK
4717816Ssteve.reinhardt@amd.com                    pass
4727816Ssteve.reinhardt@amd.com                elif tgt0_len == com_pfx_len:
4737816Ssteve.reinhardt@amd.com                    # target is a substring of source, need to back up to
4747816Ssteve.reinhardt@amd.com                    # avoid empty string on RHS of arrow
4757816Ssteve.reinhardt@amd.com                    sep_idx = com_pfx.rfind(".")
4767816Ssteve.reinhardt@amd.com                    if sep_idx != -1:
4777816Ssteve.reinhardt@amd.com                        com_pfx = com_pfx[0:sep_idx]
4787816Ssteve.reinhardt@amd.com                    else:
4797816Ssteve.reinhardt@amd.com                        com_pfx = ''
4807816Ssteve.reinhardt@amd.com                elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".":
4817816Ssteve.reinhardt@amd.com                    # still splitting at file extension: ok
4827816Ssteve.reinhardt@amd.com                    pass
4837816Ssteve.reinhardt@amd.com                else:
4847816Ssteve.reinhardt@amd.com                    # probably a fluke; ignore it
4857816Ssteve.reinhardt@amd.com                    com_pfx = ''
4867816Ssteve.reinhardt@amd.com        # recalculate length in case com_pfx was modified
4877816Ssteve.reinhardt@amd.com        com_pfx_len = len(com_pfx)
4887816Ssteve.reinhardt@amd.com        def fmt(files):
4897816Ssteve.reinhardt@amd.com            f = map(lambda s: s[com_pfx_len:], files)
4907816Ssteve.reinhardt@amd.com            return ', '.join(f)
4917816Ssteve.reinhardt@amd.com        return self.format % (com_pfx, fmt(srcs), fmt(tgts))
4927816Ssteve.reinhardt@amd.com
4937816Ssteve.reinhardt@amd.comExport('Transform')
4947816Ssteve.reinhardt@amd.com
4958947Sandreas.hansson@arm.com# enable the regression script to use the termcap
4968947Sandreas.hansson@arm.commain['TERMCAP'] = termcap
4977756SAli.Saidi@ARM.com
4988120Sgblack@eecs.umich.eduif GetOption('verbose'):
4997756SAli.Saidi@ARM.com    def MakeAction(action, string, *args, **kwargs):
5007756SAli.Saidi@ARM.com        return Action(action, *args, **kwargs)
5017756SAli.Saidi@ARM.comelse:
5027756SAli.Saidi@ARM.com    MakeAction = Action
5037816Ssteve.reinhardt@amd.com    main['CCCOMSTR']        = Transform("CC")
5047816Ssteve.reinhardt@amd.com    main['CXXCOMSTR']       = Transform("CXX")
5057816Ssteve.reinhardt@amd.com    main['ASCOMSTR']        = Transform("AS")
5067816Ssteve.reinhardt@amd.com    main['SWIGCOMSTR']      = Transform("SWIG")
5077816Ssteve.reinhardt@amd.com    main['ARCOMSTR']        = Transform("AR", 0)
5087816Ssteve.reinhardt@amd.com    main['LINKCOMSTR']      = Transform("LINK", 0)
5097816Ssteve.reinhardt@amd.com    main['RANLIBCOMSTR']    = Transform("RANLIB", 0)
5107816Ssteve.reinhardt@amd.com    main['M4COMSTR']        = Transform("M4")
5117816Ssteve.reinhardt@amd.com    main['SHCCCOMSTR']      = Transform("SHCC")
5127816Ssteve.reinhardt@amd.com    main['SHCXXCOMSTR']     = Transform("SHCXX")
5137756SAli.Saidi@ARM.comExport('MakeAction')
5147756SAli.Saidi@ARM.com
5159227Sandreas.hansson@arm.com# Initialize the Link-Time Optimization (LTO) flags
5169227Sandreas.hansson@arm.commain['LTO_CCFLAGS'] = []
5179227Sandreas.hansson@arm.commain['LTO_LDFLAGS'] = []
5189227Sandreas.hansson@arm.com
5199590Sandreas@sandberg.pp.se# According to the readme, tcmalloc works best if the compiler doesn't
5209590Sandreas@sandberg.pp.se# assume that we're using the builtin malloc and friends. These flags
5219590Sandreas@sandberg.pp.se# are compiler-specific, so we need to set them after we detect which
5229590Sandreas@sandberg.pp.se# compiler we're using.
5239590Sandreas@sandberg.pp.semain['TCMALLOC_CCFLAGS'] = []
5249590Sandreas@sandberg.pp.se
5256654Snate@binkert.orgCXX_version = readCommand([main['CXX'],'--version'], exception=False)
5266654Snate@binkert.orgCXX_V = readCommand([main['CXX'],'-V'], exception=False)
5275871Snate@binkert.org
5286121Snate@binkert.orgmain['GCC'] = CXX_version and CXX_version.find('g++') >= 0
5298946Sandreas.hansson@arm.commain['CLANG'] = CXX_version and CXX_version.find('clang') >= 0
5309419Sandreas.hansson@arm.comif main['GCC'] + main['CLANG'] > 1:
5313940Ssaidi@eecs.umich.edu    print 'Error: How can we have two at the same time?'
5323918Ssaidi@eecs.umich.edu    Exit(1)
5333918Ssaidi@eecs.umich.edu
5341858SN/A# Set up default C++ compiler flags
5359556Sandreas.hansson@arm.comif main['GCC'] or main['CLANG']:
5369556Sandreas.hansson@arm.com    # As gcc and clang share many flags, do the common parts here
5379556Sandreas.hansson@arm.com    main.Append(CCFLAGS=['-pipe'])
5389556Sandreas.hansson@arm.com    main.Append(CCFLAGS=['-fno-strict-aliasing'])
5399556Sandreas.hansson@arm.com    # Enable -Wall and then disable the few warnings that we
5409556Sandreas.hansson@arm.com    # consistently violate
5419556Sandreas.hansson@arm.com    main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef'])
5429556Sandreas.hansson@arm.com    # We always compile using C++11, but only gcc >= 4.7 and clang 3.1
5439556Sandreas.hansson@arm.com    # actually use that name, so we stick with c++0x
5449556Sandreas.hansson@arm.com    main.Append(CXXFLAGS=['-std=c++0x'])
5459556Sandreas.hansson@arm.com    # Add selected sanity checks from -Wextra
5469556Sandreas.hansson@arm.com    main.Append(CXXFLAGS=['-Wmissing-field-initializers',
5479556Sandreas.hansson@arm.com                          '-Woverloaded-virtual'])
5489556Sandreas.hansson@arm.comelse:
5499556Sandreas.hansson@arm.com    print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal,
5509556Sandreas.hansson@arm.com    print "Don't know what compiler options to use for your compiler."
5519556Sandreas.hansson@arm.com    print termcap.Yellow + '       compiler:' + termcap.Normal, main['CXX']
5529556Sandreas.hansson@arm.com    print termcap.Yellow + '       version:' + termcap.Normal,
5539556Sandreas.hansson@arm.com    if not CXX_version:
5549556Sandreas.hansson@arm.com        print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\
5559556Sandreas.hansson@arm.com               termcap.Normal
5569556Sandreas.hansson@arm.com    else:
5579556Sandreas.hansson@arm.com        print CXX_version.replace('\n', '<nl>')
5589556Sandreas.hansson@arm.com    print "       If you're trying to use a compiler other than GCC"
5599556Sandreas.hansson@arm.com    print "       or clang, there appears to be something wrong with your"
5609556Sandreas.hansson@arm.com    print "       environment."
5619556Sandreas.hansson@arm.com    print "       "
5629556Sandreas.hansson@arm.com    print "       If you are trying to use a compiler other than those listed"
5639556Sandreas.hansson@arm.com    print "       above you will need to ease fix SConstruct and "
5649556Sandreas.hansson@arm.com    print "       src/SConscript to support that compiler."
5659556Sandreas.hansson@arm.com    Exit(1)
5669556Sandreas.hansson@arm.com
5676121Snate@binkert.orgif main['GCC']:
5689420Sandreas.hansson@arm.com    # Check for a supported version of gcc, >= 4.4 is needed for c++0x
5699420Sandreas.hansson@arm.com    # support. See http://gcc.gnu.org/projects/cxx0x.html for details
5709420Sandreas.hansson@arm.com    gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False)
5719420Sandreas.hansson@arm.com    if compareVersions(gcc_version, "4.4") < 0:
5729420Sandreas.hansson@arm.com        print 'Error: gcc version 4.4 or newer required.'
5739420Sandreas.hansson@arm.com        print '       Installed version:', gcc_version
5749420Sandreas.hansson@arm.com        Exit(1)
5759420Sandreas.hansson@arm.com
5769420Sandreas.hansson@arm.com    main['GCC_VERSION'] = gcc_version
5779420Sandreas.hansson@arm.com
5789420Sandreas.hansson@arm.com    # Check for versions with bugs
5797618SAli.Saidi@arm.com    if not compareVersions(gcc_version, '4.4.1') or \
5807618SAli.Saidi@arm.com       not compareVersions(gcc_version, '4.4.2'):
5817618SAli.Saidi@arm.com        print 'Info: Tree vectorizer in GCC 4.4.1 & 4.4.2 is buggy, disabling.'
5827739Sgblack@eecs.umich.edu        main.Append(CCFLAGS=['-fno-tree-vectorize'])
5839227Sandreas.hansson@arm.com
5849227Sandreas.hansson@arm.com    # LTO support is only really working properly from 4.6 and beyond
5859227Sandreas.hansson@arm.com    if compareVersions(gcc_version, '4.6') >= 0:
5869227Sandreas.hansson@arm.com        # Add the appropriate Link-Time Optimization (LTO) flags
5879227Sandreas.hansson@arm.com        # unless LTO is explicitly turned off. Note that these flags
5889227Sandreas.hansson@arm.com        # are only used by the fast target.
5899227Sandreas.hansson@arm.com        if not GetOption('no_lto'):
5909227Sandreas.hansson@arm.com            # Pass the LTO flag when compiling to produce GIMPLE
5919227Sandreas.hansson@arm.com            # output, we merely create the flags here and only append
5929227Sandreas.hansson@arm.com            # them later/
5939227Sandreas.hansson@arm.com            main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')]
5949227Sandreas.hansson@arm.com
5959227Sandreas.hansson@arm.com            # Use the same amount of jobs for LTO as we are running
5969227Sandreas.hansson@arm.com            # scons with, we hardcode the use of the linker plugin
5979227Sandreas.hansson@arm.com            # which requires either gold or GNU ld >= 2.21
5989227Sandreas.hansson@arm.com            main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs'),
5999227Sandreas.hansson@arm.com                                   '-fuse-linker-plugin']
6009227Sandreas.hansson@arm.com
6019590Sandreas@sandberg.pp.se    main.Append(TCMALLOC_CCFLAGS=['-fno-builtin-malloc', '-fno-builtin-calloc',
6029590Sandreas@sandberg.pp.se                                  '-fno-builtin-realloc', '-fno-builtin-free'])
6039590Sandreas@sandberg.pp.se
6048737Skoansin.tan@gmail.comelif main['CLANG']:
6059420Sandreas.hansson@arm.com    # Check for a supported version of clang, >= 2.9 is needed to
6069420Sandreas.hansson@arm.com    # support similar features as gcc 4.4. See
6079420Sandreas.hansson@arm.com    # http://clang.llvm.org/cxx_status.html for details
6088737Skoansin.tan@gmail.com    clang_version_re = re.compile(".* version (\d+\.\d+)")
6098737Skoansin.tan@gmail.com    clang_version_match = clang_version_re.match(CXX_version)
6108737Skoansin.tan@gmail.com    if (clang_version_match):
6118737Skoansin.tan@gmail.com        clang_version = clang_version_match.groups()[0]
6128737Skoansin.tan@gmail.com        if compareVersions(clang_version, "2.9") < 0:
6138737Skoansin.tan@gmail.com            print 'Error: clang version 2.9 or newer required.'
6148737Skoansin.tan@gmail.com            print '       Installed version:', clang_version
6158737Skoansin.tan@gmail.com            Exit(1)
6168737Skoansin.tan@gmail.com    else:
6178737Skoansin.tan@gmail.com        print 'Error: Unable to determine clang version.'
6188737Skoansin.tan@gmail.com        Exit(1)
6198737Skoansin.tan@gmail.com
6209556Sandreas.hansson@arm.com    # clang has a few additional warnings that we disable,
6219556Sandreas.hansson@arm.com    # tautological comparisons are allowed due to unsigned integers
6229556Sandreas.hansson@arm.com    # being compared to constants that happen to be 0, and extraneous
6239556Sandreas.hansson@arm.com    # parantheses are allowed due to Ruby's printing of the AST,
6249556Sandreas.hansson@arm.com    # finally self assignments are allowed as the generated CPU code
6259556Sandreas.hansson@arm.com    # is relying on this
6269556Sandreas.hansson@arm.com    main.Append(CCFLAGS=['-Wno-tautological-compare',
6279556Sandreas.hansson@arm.com                         '-Wno-parentheses',
6289556Sandreas.hansson@arm.com                         '-Wno-self-assign'])
6299556Sandreas.hansson@arm.com
6309590Sandreas@sandberg.pp.se    main.Append(TCMALLOC_CCFLAGS=['-fno-builtin'])
6319590Sandreas@sandberg.pp.se
6329420Sandreas.hansson@arm.com    # On Mac OS X/Darwin we need to also use libc++ (part of XCode) as
6339846Sandreas.hansson@arm.com    # opposed to libstdc++, as the later is dated.
6349846Sandreas.hansson@arm.com    if sys.platform == "darwin":
6359846Sandreas.hansson@arm.com        main.Append(CXXFLAGS=['-stdlib=libc++'])
6369846Sandreas.hansson@arm.com        main.Append(LIBS=['c++'])
6378946Sandreas.hansson@arm.com
6383918Ssaidi@eecs.umich.eduelse:
6399068SAli.Saidi@ARM.com    print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal,
6409068SAli.Saidi@ARM.com    print "Don't know what compiler options to use for your compiler."
6419068SAli.Saidi@ARM.com    print termcap.Yellow + '       compiler:' + termcap.Normal, main['CXX']
6429068SAli.Saidi@ARM.com    print termcap.Yellow + '       version:' + termcap.Normal,
6439068SAli.Saidi@ARM.com    if not CXX_version:
6449068SAli.Saidi@ARM.com        print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\
6459068SAli.Saidi@ARM.com               termcap.Normal
6469068SAli.Saidi@ARM.com    else:
6479068SAli.Saidi@ARM.com        print CXX_version.replace('\n', '<nl>')
6489419Sandreas.hansson@arm.com    print "       If you're trying to use a compiler other than GCC"
6499068SAli.Saidi@ARM.com    print "       or clang, there appears to be something wrong with your"
6509068SAli.Saidi@ARM.com    print "       environment."
6519068SAli.Saidi@ARM.com    print "       "
6529068SAli.Saidi@ARM.com    print "       If you are trying to use a compiler other than those listed"
6539068SAli.Saidi@ARM.com    print "       above you will need to ease fix SConstruct and "
6549068SAli.Saidi@ARM.com    print "       src/SConscript to support that compiler."
6553918Ssaidi@eecs.umich.edu    Exit(1)
6563918Ssaidi@eecs.umich.edu
6576157Snate@binkert.org# Set up common yacc/bison flags (needed for Ruby)
6586157Snate@binkert.orgmain['YACCFLAGS'] = '-d'
6596157Snate@binkert.orgmain['YACCHXXFILESUFFIX'] = '.hh'
6606157Snate@binkert.org
6615397Ssaidi@eecs.umich.edu# Do this after we save setting back, or else we'll tack on an
6625397Ssaidi@eecs.umich.edu# extra 'qdo' every time we run scons.
6636121Snate@binkert.orgif main['BATCH']:
6646121Snate@binkert.org    main['CC']     = main['BATCH_CMD'] + ' ' + main['CC']
6656121Snate@binkert.org    main['CXX']    = main['BATCH_CMD'] + ' ' + main['CXX']
6666121Snate@binkert.org    main['AS']     = main['BATCH_CMD'] + ' ' + main['AS']
6676121Snate@binkert.org    main['AR']     = main['BATCH_CMD'] + ' ' + main['AR']
6686121Snate@binkert.org    main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB']
6695397Ssaidi@eecs.umich.edu
6701851SN/Aif sys.platform == 'cygwin':
6711851SN/A    # cygwin has some header file issues...
6727739Sgblack@eecs.umich.edu    main.Append(CCFLAGS=["-Wno-uninitialized"])
673955SN/A
6749396Sandreas.hansson@arm.com# Check for the protobuf compiler
6759396Sandreas.hansson@arm.comprotoc_version = readCommand([main['PROTOC'], '--version'],
6769396Sandreas.hansson@arm.com                             exception='').split()
6779396Sandreas.hansson@arm.com
6789396Sandreas.hansson@arm.com# First two words should be "libprotoc x.y.z"
6799396Sandreas.hansson@arm.comif len(protoc_version) < 2 or protoc_version[0] != 'libprotoc':
6809396Sandreas.hansson@arm.com    print termcap.Yellow + termcap.Bold + \
6819396Sandreas.hansson@arm.com        'Warning: Protocol buffer compiler (protoc) not found.\n' + \
6829396Sandreas.hansson@arm.com        '         Please install protobuf-compiler for tracing support.' + \
6839396Sandreas.hansson@arm.com        termcap.Normal
6849396Sandreas.hansson@arm.com    main['PROTOC'] = False
6859396Sandreas.hansson@arm.comelse:
6869396Sandreas.hansson@arm.com    # Based on the availability of the compress stream wrappers,
6879396Sandreas.hansson@arm.com    # require 2.1.0
6889396Sandreas.hansson@arm.com    min_protoc_version = '2.1.0'
6899396Sandreas.hansson@arm.com    if compareVersions(protoc_version[1], min_protoc_version) < 0:
6909477Sandreas.hansson@arm.com        print termcap.Yellow + termcap.Bold + \
6919477Sandreas.hansson@arm.com            'Warning: protoc version', min_protoc_version, \
6929477Sandreas.hansson@arm.com            'or newer required.\n' + \
6939477Sandreas.hansson@arm.com            '         Installed version:', protoc_version[1], \
6949477Sandreas.hansson@arm.com            termcap.Normal
6959477Sandreas.hansson@arm.com        main['PROTOC'] = False
6969477Sandreas.hansson@arm.com    else:
6979477Sandreas.hansson@arm.com        # Attempt to determine the appropriate include path and
6989477Sandreas.hansson@arm.com        # library path using pkg-config, that means we also need to
6999477Sandreas.hansson@arm.com        # check for pkg-config. Note that it is possible to use
7009477Sandreas.hansson@arm.com        # protobuf without the involvement of pkg-config. Later on we
7019477Sandreas.hansson@arm.com        # check go a library config check and at that point the test
7029477Sandreas.hansson@arm.com        # will fail if libprotobuf cannot be found.
7039477Sandreas.hansson@arm.com        if readCommand(['pkg-config', '--version'], exception=''):
7049477Sandreas.hansson@arm.com            try:
7059477Sandreas.hansson@arm.com                # Attempt to establish what linking flags to add for protobuf
7069477Sandreas.hansson@arm.com                # using pkg-config
7079477Sandreas.hansson@arm.com                main.ParseConfig('pkg-config --cflags --libs-only-L protobuf')
7089477Sandreas.hansson@arm.com            except:
7099477Sandreas.hansson@arm.com                print termcap.Yellow + termcap.Bold + \
7109477Sandreas.hansson@arm.com                    'Warning: pkg-config could not get protobuf flags.' + \
7119477Sandreas.hansson@arm.com                    termcap.Normal
7129396Sandreas.hansson@arm.com
7133053Sstever@eecs.umich.edu# Check for SWIG
7146121Snate@binkert.orgif not main.has_key('SWIG'):
7153053Sstever@eecs.umich.edu    print 'Error: SWIG utility not found.'
7163053Sstever@eecs.umich.edu    print '       Please install (see http://www.swig.org) and retry.'
7173053Sstever@eecs.umich.edu    Exit(1)
7183053Sstever@eecs.umich.edu
7193053Sstever@eecs.umich.edu# Check for appropriate SWIG version
7209072Sandreas.hansson@arm.comswig_version = readCommand([main['SWIG'], '-version'], exception='').split()
7213053Sstever@eecs.umich.edu# First 3 words should be "SWIG Version x.y.z"
7224742Sstever@eecs.umich.eduif len(swig_version) < 3 or \
7234742Sstever@eecs.umich.edu        swig_version[0] != 'SWIG' or swig_version[1] != 'Version':
7243053Sstever@eecs.umich.edu    print 'Error determining SWIG version.'
7253053Sstever@eecs.umich.edu    Exit(1)
7263053Sstever@eecs.umich.edu
7278960Ssteve.reinhardt@amd.commin_swig_version = '1.3.34'
7286654Snate@binkert.orgif compareVersions(swig_version[2], min_swig_version) < 0:
7293053Sstever@eecs.umich.edu    print 'Error: SWIG version', min_swig_version, 'or newer required.'
7303053Sstever@eecs.umich.edu    print '       Installed version:', swig_version[2]
7313053Sstever@eecs.umich.edu    Exit(1)
7323053Sstever@eecs.umich.edu
7339877Sandreas.hansson@arm.com# Older versions of swig do not play well with more recent versions of
7349877Sandreas.hansson@arm.com# gcc due to assumptions on implicit includes (cstddef) and use of
7359877Sandreas.hansson@arm.com# namespaces
7369877Sandreas.hansson@arm.comif main['GCC'] and compareVersions(gcc_version, '4.6') > 0 and \
7379877Sandreas.hansson@arm.com        compareVersions(swig_version[2], '2') < 0:
7389585Sandreas@sandberg.pp.se    print '\n' + termcap.Yellow + termcap.Bold + \
7399877Sandreas.hansson@arm.com        'Warning: SWIG 1.x cause issues with gcc 4.6 and later.\n' + \
7409585Sandreas@sandberg.pp.se        termcap.Normal + \
7419877Sandreas.hansson@arm.com        'Use SWIG 2.x to avoid assumptions on implicit includes\n' + \
7429877Sandreas.hansson@arm.com        'and use of namespaces\n'
7439585Sandreas@sandberg.pp.se
7442667Sstever@eecs.umich.edu# Set up SWIG flags & scanner
7454554Sbinkertn@umich.eduswig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS')
7466121Snate@binkert.orgmain.Append(SWIGFLAGS=swig_flags)
7472667Sstever@eecs.umich.edu
7484554Sbinkertn@umich.edu# filter out all existing swig scanners, they mess up the dependency
7494554Sbinkertn@umich.edu# stuff for some reason
7504554Sbinkertn@umich.eduscanners = []
7516121Snate@binkert.orgfor scanner in main['SCANNERS']:
7524554Sbinkertn@umich.edu    skeys = scanner.skeys
7534554Sbinkertn@umich.edu    if skeys == '.i':
7544554Sbinkertn@umich.edu        continue
7554781Snate@binkert.org
7564554Sbinkertn@umich.edu    if isinstance(skeys, (list, tuple)) and '.i' in skeys:
7574554Sbinkertn@umich.edu        continue
7582667Sstever@eecs.umich.edu
7594554Sbinkertn@umich.edu    scanners.append(scanner)
7604554Sbinkertn@umich.edu
7614554Sbinkertn@umich.edu# add the new swig scanner that we like better
7624554Sbinkertn@umich.edufrom SCons.Scanner import ClassicCPP as CPPScanner
7632667Sstever@eecs.umich.eduswig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")'
7644554Sbinkertn@umich.eduscanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re))
7652667Sstever@eecs.umich.edu
7664554Sbinkertn@umich.edu# replace the scanners list that has what we want
7676121Snate@binkert.orgmain['SCANNERS'] = scanners
7682667Sstever@eecs.umich.edu
7695522Snate@binkert.org# Add a custom Check function to the Configure context so that we can
7705522Snate@binkert.org# figure out if the compiler adds leading underscores to global
7715522Snate@binkert.org# variables.  This is needed for the autogenerated asm files that we
7725522Snate@binkert.org# use for embedding the python code.
7735522Snate@binkert.orgdef CheckLeading(context):
7745522Snate@binkert.org    context.Message("Checking for leading underscore in global variables...")
7755522Snate@binkert.org    # 1) Define a global variable called x from asm so the C compiler
7765522Snate@binkert.org    #    won't change the symbol at all.
7775522Snate@binkert.org    # 2) Declare that variable.
7785522Snate@binkert.org    # 3) Use the variable
7795522Snate@binkert.org    #
7805522Snate@binkert.org    # If the compiler prepends an underscore, this will successfully
7815522Snate@binkert.org    # link because the external symbol 'x' will be called '_x' which
7825522Snate@binkert.org    # was defined by the asm statement.  If the compiler does not
7835522Snate@binkert.org    # prepend an underscore, this will not successfully link because
7845522Snate@binkert.org    # '_x' will have been defined by assembly, while the C portion of
7855522Snate@binkert.org    # the code will be trying to use 'x'
7865522Snate@binkert.org    ret = context.TryLink('''
7875522Snate@binkert.org        asm(".globl _x; _x: .byte 0");
7885522Snate@binkert.org        extern int x;
7895522Snate@binkert.org        int main() { return x; }
7905522Snate@binkert.org        ''', extension=".c")
7915522Snate@binkert.org    context.env.Append(LEADING_UNDERSCORE=ret)
7925522Snate@binkert.org    context.Result(ret)
7935522Snate@binkert.org    return ret
7945522Snate@binkert.org
7952638Sstever@eecs.umich.edu# Platform-specific configuration.  Note again that we assume that all
7962638Sstever@eecs.umich.edu# builds under a given build root run on the same host platform.
7976121Snate@binkert.orgconf = Configure(main,
7983716Sstever@eecs.umich.edu                 conf_dir = joinpath(build_root, '.scons_config'),
7995522Snate@binkert.org                 log_file = joinpath(build_root, 'scons_config.log'),
8009420Sandreas.hansson@arm.com                 custom_tests = { 'CheckLeading' : CheckLeading })
8015522Snate@binkert.org
8025522Snate@binkert.org# Check for leading underscores.  Don't really need to worry either
8035522Snate@binkert.org# way so don't need to check the return code.
8045522Snate@binkert.orgconf.CheckLeading()
8051858SN/A
8065227Ssaidi@eecs.umich.edu# Check if we should compile a 64 bit binary on Mac OS X/Darwin
8075227Ssaidi@eecs.umich.edutry:
8085227Ssaidi@eecs.umich.edu    import platform
8095227Ssaidi@eecs.umich.edu    uname = platform.uname()
8106654Snate@binkert.org    if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0:
8116654Snate@binkert.org        if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]):
8127769SAli.Saidi@ARM.com            main.Append(CCFLAGS=['-arch', 'x86_64'])
8137769SAli.Saidi@ARM.com            main.Append(CFLAGS=['-arch', 'x86_64'])
8147769SAli.Saidi@ARM.com            main.Append(LINKFLAGS=['-arch', 'x86_64'])
8157769SAli.Saidi@ARM.com            main.Append(ASFLAGS=['-arch', 'x86_64'])
8165227Ssaidi@eecs.umich.eduexcept:
8175227Ssaidi@eecs.umich.edu    pass
8185227Ssaidi@eecs.umich.edu
8195204Sstever@gmail.com# Recent versions of scons substitute a "Null" object for Configure()
8205204Sstever@gmail.com# when configuration isn't necessary, e.g., if the "--help" option is
8215204Sstever@gmail.com# present.  Unfortuantely this Null object always returns false,
8225204Sstever@gmail.com# breaking all our configuration checks.  We replace it with our own
8235204Sstever@gmail.com# more optimistic null object that returns True instead.
8245204Sstever@gmail.comif not conf:
8255204Sstever@gmail.com    def NullCheck(*args, **kwargs):
8265204Sstever@gmail.com        return True
8275204Sstever@gmail.com
8285204Sstever@gmail.com    class NullConf:
8295204Sstever@gmail.com        def __init__(self, env):
8305204Sstever@gmail.com            self.env = env
8315204Sstever@gmail.com        def Finish(self):
8325204Sstever@gmail.com            return self.env
8335204Sstever@gmail.com        def __getattr__(self, mname):
8345204Sstever@gmail.com            return NullCheck
8355204Sstever@gmail.com
8366121Snate@binkert.org    conf = NullConf(main)
8375204Sstever@gmail.com
8387727SAli.Saidi@ARM.com# Cache build files in the supplied directory.
8397727SAli.Saidi@ARM.comif main['M5_BUILD_CACHE']:
8407727SAli.Saidi@ARM.com    print 'Using build cache located at', main['M5_BUILD_CACHE']
8417727SAli.Saidi@ARM.com    CacheDir(main['M5_BUILD_CACHE'])
8427727SAli.Saidi@ARM.com
8439812Sandreas.hansson@arm.com# Find Python include and library directories for embedding the
8449812Sandreas.hansson@arm.com# interpreter. We rely on python-config to resolve the appropriate
8459812Sandreas.hansson@arm.com# includes and linker flags. ParseConfig does not seem to understand
8469812Sandreas.hansson@arm.com# the more exotic linker flags such as -Xlinker and -export-dynamic so
8479812Sandreas.hansson@arm.com# we add them explicitly below. If you want to link in an alternate
8489812Sandreas.hansson@arm.com# version of python, see above for instructions on how to invoke
8499812Sandreas.hansson@arm.com# scons with the appropriate PATH set.
8509812Sandreas.hansson@arm.compy_includes = readCommand(['python-config', '--includes'],
8519812Sandreas.hansson@arm.com                          exception='').split()
8529812Sandreas.hansson@arm.com# Strip the -I from the include folders before adding them to the
8539812Sandreas.hansson@arm.com# CPPPATH
8549812Sandreas.hansson@arm.commain.Append(CPPPATH=map(lambda inc: inc[2:], py_includes))
8559812Sandreas.hansson@arm.com
8569812Sandreas.hansson@arm.com# Read the linker flags and split them into libraries and other link
8579812Sandreas.hansson@arm.com# flags. The libraries are added later through the call the CheckLib.
8589812Sandreas.hansson@arm.compy_ld_flags = readCommand(['python-config', '--ldflags'], exception='').split()
8599812Sandreas.hansson@arm.compy_libs = []
8609812Sandreas.hansson@arm.comfor lib in py_ld_flags:
8619812Sandreas.hansson@arm.com     if not lib.startswith('-l'):
8629812Sandreas.hansson@arm.com         main.Append(LINKFLAGS=[lib])
8639812Sandreas.hansson@arm.com     else:
8649812Sandreas.hansson@arm.com         lib = lib[2:]
8659812Sandreas.hansson@arm.com         if lib not in py_libs:
8669812Sandreas.hansson@arm.com             py_libs.append(lib)
8677727SAli.Saidi@ARM.com
8685863Snate@binkert.org# verify that this stuff works
8693118Sstever@eecs.umich.eduif not conf.CheckHeader('Python.h', '<>'):
8705863Snate@binkert.org    print "Error: can't find Python.h header in", py_includes
8719239Sandreas.hansson@arm.com    print "Install Python headers (package python-dev on Ubuntu and RedHat)"
8723118Sstever@eecs.umich.edu    Exit(1)
8733118Sstever@eecs.umich.edu
8745863Snate@binkert.orgfor lib in py_libs:
8755863Snate@binkert.org    if not conf.CheckLib(lib):
8765863Snate@binkert.org        print "Error: can't find library %s required by python" % lib
8775863Snate@binkert.org        Exit(1)
8783118Sstever@eecs.umich.edu
8793483Ssaidi@eecs.umich.edu# On Solaris you need to use libsocket for socket ops
8803494Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'):
8813494Ssaidi@eecs.umich.edu   if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'):
8823483Ssaidi@eecs.umich.edu       print "Can't find library with socket calls (e.g. accept())"
8833483Ssaidi@eecs.umich.edu       Exit(1)
8843483Ssaidi@eecs.umich.edu
8853053Sstever@eecs.umich.edu# Check for zlib.  If the check passes, libz will be automatically
8863053Sstever@eecs.umich.edu# added to the LIBS environment variable.
8873918Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'):
8883053Sstever@eecs.umich.edu    print 'Error: did not find needed zlib compression library '\
8893053Sstever@eecs.umich.edu          'and/or zlib.h header file.'
8903053Sstever@eecs.umich.edu    print '       Please install zlib and try again.'
8913053Sstever@eecs.umich.edu    Exit(1)
8923053Sstever@eecs.umich.edu
8939396Sandreas.hansson@arm.com# If we have the protobuf compiler, also make sure we have the
8949396Sandreas.hansson@arm.com# development libraries. If the check passes, libprotobuf will be
8959396Sandreas.hansson@arm.com# automatically added to the LIBS environment variable. After
8969396Sandreas.hansson@arm.com# this, we can use the HAVE_PROTOBUF flag to determine if we have
8979396Sandreas.hansson@arm.com# got both protoc and libprotobuf available.
8989396Sandreas.hansson@arm.commain['HAVE_PROTOBUF'] = main['PROTOC'] and \
8999396Sandreas.hansson@arm.com    conf.CheckLibWithHeader('protobuf', 'google/protobuf/message.h',
9009396Sandreas.hansson@arm.com                            'C++', 'GOOGLE_PROTOBUF_VERIFY_VERSION;')
9019396Sandreas.hansson@arm.com
9029477Sandreas.hansson@arm.com# If we have the compiler but not the library, print another warning.
9039396Sandreas.hansson@arm.comif main['PROTOC'] and not main['HAVE_PROTOBUF']:
9049477Sandreas.hansson@arm.com    print termcap.Yellow + termcap.Bold + \
9059477Sandreas.hansson@arm.com        'Warning: did not find protocol buffer library and/or headers.\n' + \
9069477Sandreas.hansson@arm.com    '       Please install libprotobuf-dev for tracing support.' + \
9079477Sandreas.hansson@arm.com    termcap.Normal
9089396Sandreas.hansson@arm.com
9097840Snate@binkert.org# Check for librt.
9107865Sgblack@eecs.umich.eduhave_posix_clock = \
9117865Sgblack@eecs.umich.edu    conf.CheckLibWithHeader(None, 'time.h', 'C',
9127865Sgblack@eecs.umich.edu                            'clock_nanosleep(0,0,NULL,NULL);') or \
9137865Sgblack@eecs.umich.edu    conf.CheckLibWithHeader('rt', 'time.h', 'C',
9147865Sgblack@eecs.umich.edu                            'clock_nanosleep(0,0,NULL,NULL);')
9157840Snate@binkert.org
9169591Sandreas@sandberg.pp.seif conf.CheckLib('tcmalloc'):
9179591Sandreas@sandberg.pp.se    main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS'])
9189591Sandreas@sandberg.pp.seelif conf.CheckLib('tcmalloc_minimal'):
9199590Sandreas@sandberg.pp.se    main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS'])
9209590Sandreas@sandberg.pp.seelse:
9219045SAli.Saidi@ARM.com    print termcap.Yellow + termcap.Bold + \
9229045SAli.Saidi@ARM.com          "You can get a 12% performance improvement by installing tcmalloc "\
9239071Sandreas.hansson@arm.com          "(libgoogle-perftools-dev package on Ubuntu or RedHat)." + \
9249071Sandreas.hansson@arm.com          termcap.Normal
9259045SAli.Saidi@ARM.com
9267840Snate@binkert.orgif not have_posix_clock:
9277840Snate@binkert.org    print "Can't find library for POSIX clocks."
9287840Snate@binkert.org
9291858SN/A# Check for <fenv.h> (C99 FP environment control)
9301858SN/Ahave_fenv = conf.CheckHeader('fenv.h', '<>')
9311858SN/Aif not have_fenv:
9321858SN/A    print "Warning: Header file <fenv.h> not found."
9331858SN/A    print "         This host has no IEEE FP rounding mode control."
9341858SN/A
9359651SAndreas.Sandberg@ARM.com# Check if we should enable KVM-based hardware virtualization
9369651SAndreas.Sandberg@ARM.comhave_kvm = conf.CheckHeader('linux/kvm.h', '<>')
9379651SAndreas.Sandberg@ARM.comif not have_kvm:
9389651SAndreas.Sandberg@ARM.com    print "Info: Header file <linux/kvm.h> not found, " \
9399651SAndreas.Sandberg@ARM.com        "disabling KVM support."
9409651SAndreas.Sandberg@ARM.com
9419651SAndreas.Sandberg@ARM.com# Check if the requested target ISA is compatible with the host
9429651SAndreas.Sandberg@ARM.comdef is_isa_kvm_compatible(isa):
9439651SAndreas.Sandberg@ARM.com    isa_comp_table = {
9449657Sandreas.sandberg@arm.com        "arm" : ( "armv7l" ),
9459883Sandreas@sandberg.pp.se        "x86" : ( "x86_64" ),
9469651SAndreas.Sandberg@ARM.com        }
9479651SAndreas.Sandberg@ARM.com    try:
9489651SAndreas.Sandberg@ARM.com        import platform
9499651SAndreas.Sandberg@ARM.com        host_isa = platform.machine()
9509651SAndreas.Sandberg@ARM.com    except:
9519651SAndreas.Sandberg@ARM.com        print "Warning: Failed to determine host ISA."
9529651SAndreas.Sandberg@ARM.com        return False
9539651SAndreas.Sandberg@ARM.com
9549651SAndreas.Sandberg@ARM.com    return host_isa in isa_comp_table.get(isa, [])
9559651SAndreas.Sandberg@ARM.com
9569651SAndreas.Sandberg@ARM.com
9575863Snate@binkert.org######################################################################
9585863Snate@binkert.org#
9595863Snate@binkert.org# Finish the configuration
9605863Snate@binkert.org#
9616121Snate@binkert.orgmain = conf.Finish()
9621858SN/A
9635863Snate@binkert.org######################################################################
9645863Snate@binkert.org#
9655863Snate@binkert.org# Collect all non-global variables
9665863Snate@binkert.org#
9675863Snate@binkert.org
9682139SN/A# Define the universe of supported ISAs
9694202Sbinkertn@umich.eduall_isa_list = [ ]
9704202Sbinkertn@umich.eduExport('all_isa_list')
9712139SN/A
9726994Snate@binkert.orgclass CpuModel(object):
9736994Snate@binkert.org    '''The CpuModel class encapsulates everything the ISA parser needs to
9746994Snate@binkert.org    know about a particular CPU model.'''
9756994Snate@binkert.org
9766994Snate@binkert.org    # Dict of available CPU model objects.  Accessible as CpuModel.dict.
9776994Snate@binkert.org    dict = {}
9786994Snate@binkert.org    list = []
9796994Snate@binkert.org    defaults = []
9806994Snate@binkert.org
9816994Snate@binkert.org    # Constructor.  Automatically adds models to CpuModel.dict.
9826994Snate@binkert.org    def __init__(self, name, filename, includes, strings, default=False):
9836994Snate@binkert.org        self.name = name           # name of model
9846994Snate@binkert.org        self.filename = filename   # filename for output exec code
9856994Snate@binkert.org        self.includes = includes   # include files needed in exec file
9866994Snate@binkert.org        # The 'strings' dict holds all the per-CPU symbols we can
9876994Snate@binkert.org        # substitute into templates etc.
9886994Snate@binkert.org        self.strings = strings
9896994Snate@binkert.org
9906994Snate@binkert.org        # This cpu is enabled by default
9916994Snate@binkert.org        self.default = default
9926994Snate@binkert.org
9936994Snate@binkert.org        # Add self to dict
9946994Snate@binkert.org        if name in CpuModel.dict:
9956994Snate@binkert.org            raise AttributeError, "CpuModel '%s' already registered" % name
9966994Snate@binkert.org        CpuModel.dict[name] = self
9976994Snate@binkert.org        CpuModel.list.append(name)
9986994Snate@binkert.org
9996994Snate@binkert.orgExport('CpuModel')
10002155SN/A
10015863Snate@binkert.org# Sticky variables get saved in the variables file so they persist from
10021869SN/A# one invocation to the next (unless overridden, in which case the new
10031869SN/A# value becomes sticky).
10045863Snate@binkert.orgsticky_vars = Variables(args=ARGUMENTS)
10055863Snate@binkert.orgExport('sticky_vars')
10064202Sbinkertn@umich.edu
10076108Snate@binkert.org# Sticky variables that should be exported
10086108Snate@binkert.orgexport_vars = []
10096108Snate@binkert.orgExport('export_vars')
10106108Snate@binkert.org
10119219Spower.jg@gmail.com# For Ruby
10129219Spower.jg@gmail.comall_protocols = []
10139219Spower.jg@gmail.comExport('all_protocols')
10149219Spower.jg@gmail.comprotocol_dirs = []
10159219Spower.jg@gmail.comExport('protocol_dirs')
10169219Spower.jg@gmail.comslicc_includes = []
10179219Spower.jg@gmail.comExport('slicc_includes')
10189219Spower.jg@gmail.com
10194202Sbinkertn@umich.edu# Walk the tree and execute all SConsopts scripts that wil add to the
10205863Snate@binkert.org# above variables
10218474Sgblack@eecs.umich.eduif not GetOption('verbose'):
10228474Sgblack@eecs.umich.edu    print "Reading SConsopts"
10235742Snate@binkert.orgfor bdir in [ base_dir ] + extras_dir_list:
10248268Ssteve.reinhardt@amd.com    if not isdir(bdir):
10258268Ssteve.reinhardt@amd.com        print "Error: directory '%s' does not exist" % bdir
10268268Ssteve.reinhardt@amd.com        Exit(1)
10275742Snate@binkert.org    for root, dirs, files in os.walk(bdir):
10285341Sstever@gmail.com        if 'SConsopts' in files:
10298474Sgblack@eecs.umich.edu            if GetOption('verbose'):
10308474Sgblack@eecs.umich.edu                print "Reading", joinpath(root, 'SConsopts')
10315342Sstever@gmail.com            SConscript(joinpath(root, 'SConsopts'))
10324202Sbinkertn@umich.edu
10334202Sbinkertn@umich.eduall_isa_list.sort()
10344202Sbinkertn@umich.edu
10355863Snate@binkert.orgsticky_vars.AddVariables(
10365863Snate@binkert.org    EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list),
10376994Snate@binkert.org    ListVariable('CPU_MODELS', 'CPU models',
10386994Snate@binkert.org                 sorted(n for n,m in CpuModel.dict.iteritems() if m.default),
10396994Snate@binkert.org                 sorted(CpuModel.list)),
10405863Snate@binkert.org    BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger',
10415863Snate@binkert.org                 False),
10425863Snate@binkert.org    BoolVariable('SS_COMPATIBLE_FP',
10435863Snate@binkert.org                 'Make floating-point results compatible with SimpleScalar',
10445863Snate@binkert.org                 False),
10455863Snate@binkert.org    BoolVariable('USE_SSE2',
10465863Snate@binkert.org                 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts',
10475863Snate@binkert.org                 False),
10487840Snate@binkert.org    BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock),
10495863Snate@binkert.org    BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv),
10505952Ssaidi@eecs.umich.edu    BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False),
10519651SAndreas.Sandberg@ARM.com    BoolVariable('USE_KVM', 'Enable hardware virtualized (KVM) CPU models', have_kvm),
10529219Spower.jg@gmail.com    EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None',
10539219Spower.jg@gmail.com                  all_protocols),
10541869SN/A    )
10551858SN/A
10565863Snate@binkert.org# These variables get exported to #defines in config/*.hh (see src/SConscript).
10579420Sandreas.hansson@arm.comexport_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 'TARGET_ISA', 'CP_ANNOTATE',
10589420Sandreas.hansson@arm.com                'USE_POSIX_CLOCK', 'PROTOCOL', 'HAVE_PROTOBUF']
10591858SN/A
1060955SN/A###################################################
1061955SN/A#
10621869SN/A# Define a SCons builder for configuration flag headers.
10631869SN/A#
10641869SN/A###################################################
10651869SN/A
10661869SN/A# This function generates a config header file that #defines the
10675863Snate@binkert.org# variable symbol to the current variable setting (0 or 1).  The source
10685863Snate@binkert.org# operands are the name of the variable and a Value node containing the
10695863Snate@binkert.org# value of the variable.
10701869SN/Adef build_config_file(target, source, env):
10715863Snate@binkert.org    (variable, value) = [s.get_contents() for s in source]
10721869SN/A    f = file(str(target[0]), 'w')
10735863Snate@binkert.org    print >> f, '#define', variable, value
10741869SN/A    f.close()
10751869SN/A    return None
10761869SN/A
10771869SN/A# Combine the two functions into a scons Action object.
10788483Sgblack@eecs.umich.educonfig_action = MakeAction(build_config_file, Transform("CONFIG H", 2))
10791869SN/A
10801869SN/A# The emitter munges the source & target node lists to reflect what
10811869SN/A# we're really doing.
10821869SN/Adef config_emitter(target, source, env):
10835863Snate@binkert.org    # extract variable name from Builder arg
10845863Snate@binkert.org    variable = str(target[0])
10851869SN/A    # True target is config header file
10865863Snate@binkert.org    target = joinpath('config', variable.lower() + '.hh')
10875863Snate@binkert.org    val = env[variable]
10883356Sbinkertn@umich.edu    if isinstance(val, bool):
10893356Sbinkertn@umich.edu        # Force value to 0/1
10903356Sbinkertn@umich.edu        val = int(val)
10913356Sbinkertn@umich.edu    elif isinstance(val, str):
10923356Sbinkertn@umich.edu        val = '"' + val + '"'
10934781Snate@binkert.org
10945863Snate@binkert.org    # Sources are variable name & value (packaged in SCons Value nodes)
10955863Snate@binkert.org    return ([target], [Value(variable), Value(val)])
10961869SN/A
10971869SN/Aconfig_builder = Builder(emitter = config_emitter, action = config_action)
10981869SN/A
10996121Snate@binkert.orgmain.Append(BUILDERS = { 'ConfigFile' : config_builder })
11001869SN/A
11012638Sstever@eecs.umich.edu# libelf build is shared across all configs in the build root.
11026121Snate@binkert.orgmain.SConscript('ext/libelf/SConscript',
11036121Snate@binkert.org                variant_dir = joinpath(build_root, 'libelf'))
11042638Sstever@eecs.umich.edu
11055749Scws3k@cs.virginia.edu# gzstream build is shared across all configs in the build root.
11066121Snate@binkert.orgmain.SConscript('ext/gzstream/SConscript',
11076121Snate@binkert.org                variant_dir = joinpath(build_root, 'gzstream'))
11085749Scws3k@cs.virginia.edu
11099537Satgutier@umich.edu# libfdt build is shared across all configs in the build root.
11109537Satgutier@umich.edumain.SConscript('ext/libfdt/SConscript',
11119537Satgutier@umich.edu                variant_dir = joinpath(build_root, 'libfdt'))
11129537Satgutier@umich.edu
11139888Sandreas@sandberg.pp.se# fputils build is shared across all configs in the build root.
11149888Sandreas@sandberg.pp.semain.SConscript('ext/fputils/SConscript',
11159888Sandreas@sandberg.pp.se                variant_dir = joinpath(build_root, 'fputils'))
11169888Sandreas@sandberg.pp.se
11171869SN/A###################################################
11181869SN/A#
11193546Sgblack@eecs.umich.edu# This function is used to set up a directory with switching headers
11203546Sgblack@eecs.umich.edu#
11213546Sgblack@eecs.umich.edu###################################################
11223546Sgblack@eecs.umich.edu
11236121Snate@binkert.orgmain['ALL_ISA_LIST'] = all_isa_list
11245863Snate@binkert.orgdef make_switching_dir(dname, switch_headers, env):
11253546Sgblack@eecs.umich.edu    # Generate the header.  target[0] is the full path of the output
11263546Sgblack@eecs.umich.edu    # header to generate.  'source' is a dummy variable, since we get the
11273546Sgblack@eecs.umich.edu    # list of ISAs from env['ALL_ISA_LIST'].
11283546Sgblack@eecs.umich.edu    def gen_switch_hdr(target, source, env):
11294781Snate@binkert.org        fname = str(target[0])
11304781Snate@binkert.org        f = open(fname, 'w')
11316658Snate@binkert.org        isa = env['TARGET_ISA'].lower()
11326658Snate@binkert.org        print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname))
11334781Snate@binkert.org        f.close()
11343546Sgblack@eecs.umich.edu
11353546Sgblack@eecs.umich.edu    # Build SCons Action object. 'varlist' specifies env vars that this
11363546Sgblack@eecs.umich.edu    # action depends on; when env['ALL_ISA_LIST'] changes these actions
11373546Sgblack@eecs.umich.edu    # should get re-executed.
11387756SAli.Saidi@ARM.com    switch_hdr_action = MakeAction(gen_switch_hdr,
11397816Ssteve.reinhardt@amd.com                          Transform("GENERATE"), varlist=['ALL_ISA_LIST'])
11403546Sgblack@eecs.umich.edu
11413546Sgblack@eecs.umich.edu    # Instantiate actions for each header
11423546Sgblack@eecs.umich.edu    for hdr in switch_headers:
11433546Sgblack@eecs.umich.edu        env.Command(hdr, [], switch_hdr_action)
11444202Sbinkertn@umich.eduExport('make_switching_dir')
11453546Sgblack@eecs.umich.edu
11463546Sgblack@eecs.umich.edu###################################################
11473546Sgblack@eecs.umich.edu#
1148955SN/A# Define build environments for selected configurations.
1149955SN/A#
1150955SN/A###################################################
1151955SN/A
11525863Snate@binkert.orgfor variant_path in variant_paths:
11535863Snate@binkert.org    print "Building in", variant_path
11545343Sstever@gmail.com
11555343Sstever@gmail.com    # Make a copy of the build-root environment to use for this config.
11566121Snate@binkert.org    env = main.Clone()
11575863Snate@binkert.org    env['BUILDDIR'] = variant_path
11584773Snate@binkert.org
11595863Snate@binkert.org    # variant_dir is the tail component of build path, and is used to
11602632Sstever@eecs.umich.edu    # determine the build parameters (e.g., 'ALPHA_SE')
11615863Snate@binkert.org    (build_root, variant_dir) = splitpath(variant_path)
11622023SN/A
11635863Snate@binkert.org    # Set env variables according to the build directory config.
11645863Snate@binkert.org    sticky_vars.files = []
11655863Snate@binkert.org    # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in
11665863Snate@binkert.org    # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke
11675863Snate@binkert.org    # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings.
11685863Snate@binkert.org    current_vars_file = joinpath(build_root, 'variables', variant_dir)
11695863Snate@binkert.org    if isfile(current_vars_file):
11705863Snate@binkert.org        sticky_vars.files.append(current_vars_file)
11715863Snate@binkert.org        print "Using saved variables file %s" % current_vars_file
11722632Sstever@eecs.umich.edu    else:
11735863Snate@binkert.org        # Build dir-specific variables file doesn't exist.
11742023SN/A
11752632Sstever@eecs.umich.edu        # Make sure the directory is there so we can create it later
11765863Snate@binkert.org        opt_dir = dirname(current_vars_file)
11775342Sstever@gmail.com        if not isdir(opt_dir):
11785863Snate@binkert.org            mkdir(opt_dir)
11792632Sstever@eecs.umich.edu
11805863Snate@binkert.org        # Get default build variables from source tree.  Variables are
11815863Snate@binkert.org        # normally determined by name of $VARIANT_DIR, but can be
11828267Ssteve.reinhardt@amd.com        # overridden by '--default=' arg on command line.
11838120Sgblack@eecs.umich.edu        default = GetOption('default')
11848267Ssteve.reinhardt@amd.com        opts_dir = joinpath(main.root.abspath, 'build_opts')
11858267Ssteve.reinhardt@amd.com        if default:
11868267Ssteve.reinhardt@amd.com            default_vars_files = [joinpath(build_root, 'variables', default),
11878267Ssteve.reinhardt@amd.com                                  joinpath(opts_dir, default)]
11888267Ssteve.reinhardt@amd.com        else:
11898267Ssteve.reinhardt@amd.com            default_vars_files = [joinpath(opts_dir, variant_dir)]
11908267Ssteve.reinhardt@amd.com        existing_files = filter(isfile, default_vars_files)
11918267Ssteve.reinhardt@amd.com        if existing_files:
11928267Ssteve.reinhardt@amd.com            default_vars_file = existing_files[0]
11935863Snate@binkert.org            sticky_vars.files.append(default_vars_file)
11945863Snate@binkert.org            print "Variables file %s not found,\n  using defaults in %s" \
11955863Snate@binkert.org                  % (current_vars_file, default_vars_file)
11962632Sstever@eecs.umich.edu        else:
11978267Ssteve.reinhardt@amd.com            print "Error: cannot find variables file %s or " \
11988267Ssteve.reinhardt@amd.com                  "default file(s) %s" \
11998267Ssteve.reinhardt@amd.com                  % (current_vars_file, ' or '.join(default_vars_files))
12002632Sstever@eecs.umich.edu            Exit(1)
12011888SN/A
12025863Snate@binkert.org    # Apply current variable settings to env
12035863Snate@binkert.org    sticky_vars.Update(env)
12041858SN/A
12058120Sgblack@eecs.umich.edu    help_texts["local_vars"] += \
12068120Sgblack@eecs.umich.edu        "Build variables for %s:\n" % variant_dir \
12077756SAli.Saidi@ARM.com                 + sticky_vars.GenerateHelpText(env)
12082598SN/A
12095863Snate@binkert.org    # Process variable settings.
12101858SN/A
12111858SN/A    if not have_fenv and env['USE_FENV']:
12121858SN/A        print "Warning: <fenv.h> not available; " \
12135863Snate@binkert.org              "forcing USE_FENV to False in", variant_dir + "."
12141858SN/A        env['USE_FENV'] = False
12151858SN/A
12161858SN/A    if not env['USE_FENV']:
12175863Snate@binkert.org        print "Warning: No IEEE FP rounding mode control in", variant_dir + "."
12181871SN/A        print "         FP results may deviate slightly from other platforms."
12191858SN/A
12201858SN/A    if env['EFENCE']:
12211858SN/A        env.Append(LIBS=['efence'])
12221858SN/A
12239651SAndreas.Sandberg@ARM.com    if env['USE_KVM']:
12249651SAndreas.Sandberg@ARM.com        if not have_kvm:
12259651SAndreas.Sandberg@ARM.com            print "Warning: Can not enable KVM, host seems to lack KVM support"
12269651SAndreas.Sandberg@ARM.com            env['USE_KVM'] = False
12279651SAndreas.Sandberg@ARM.com        elif not is_isa_kvm_compatible(env['TARGET_ISA']):
12289651SAndreas.Sandberg@ARM.com            print "Info: KVM support disabled due to unsupported host and " \
12299651SAndreas.Sandberg@ARM.com                "target ISA combination"
12309651SAndreas.Sandberg@ARM.com            env['USE_KVM'] = False
12319651SAndreas.Sandberg@ARM.com
12325863Snate@binkert.org    # Save sticky variable settings back to current variables file
12335863Snate@binkert.org    sticky_vars.Save(current_vars_file, env)
12341869SN/A
12351965SN/A    if env['USE_SSE2']:
12367739Sgblack@eecs.umich.edu        env.Append(CCFLAGS=['-msse2'])
12371965SN/A
12382761Sstever@eecs.umich.edu    # The src/SConscript file sets up the build rules in 'env' according
12395863Snate@binkert.org    # to the configured variables.  It returns a list of environments,
12401869SN/A    # one for each variant build (debug, opt, etc.)
12415863Snate@binkert.org    envList = SConscript('src/SConscript', variant_dir = variant_path,
12422667Sstever@eecs.umich.edu                         exports = 'env')
12431869SN/A
12441869SN/A    # Set up the regression tests for each build.
12452929Sktlim@umich.edu    for e in envList:
12462929Sktlim@umich.edu        SConscript('tests/SConscript',
12475863Snate@binkert.org                   variant_dir = joinpath(variant_path, 'tests', e.Label),
12482929Sktlim@umich.edu                   exports = { 'env' : e }, duplicate = False)
1249955SN/A
12508120Sgblack@eecs.umich.edu# base help text
12518120Sgblack@eecs.umich.eduHelp('''
12528120Sgblack@eecs.umich.eduUsage: scons [scons options] [build variables] [target(s)]
12538120Sgblack@eecs.umich.edu
12548120Sgblack@eecs.umich.eduExtra scons options:
12558120Sgblack@eecs.umich.edu%(options)s
12568120Sgblack@eecs.umich.edu
12578120Sgblack@eecs.umich.eduGlobal build variables:
12588120Sgblack@eecs.umich.edu%(global_vars)s
12598120Sgblack@eecs.umich.edu
12608120Sgblack@eecs.umich.edu%(local_vars)s
12618120Sgblack@eecs.umich.edu''' % help_texts)
1262