SConstruct revision 7816
1955SN/A# -*- mode:python -*-
2955SN/A
37816Ssteve.reinhardt@amd.com# Copyright (c) 2011 Advanced Micro Devices, Inc.
45871Snate@binkert.org# Copyright (c) 2009 The Hewlett-Packard Development Company
51762SN/A# Copyright (c) 2004-2005 The Regents of The University of Michigan
6955SN/A# All rights reserved.
7955SN/A#
8955SN/A# Redistribution and use in source and binary forms, with or without
9955SN/A# modification, are permitted provided that the following conditions are
10955SN/A# met: redistributions of source code must retain the above copyright
11955SN/A# notice, this list of conditions and the following disclaimer;
12955SN/A# redistributions in binary form must reproduce the above copyright
13955SN/A# notice, this list of conditions and the following disclaimer in the
14955SN/A# documentation and/or other materials provided with the distribution;
15955SN/A# neither the name of the copyright holders nor the names of its
16955SN/A# contributors may be used to endorse or promote products derived from
17955SN/A# this software without specific prior written permission.
18955SN/A#
19955SN/A# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20955SN/A# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21955SN/A# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22955SN/A# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23955SN/A# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24955SN/A# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25955SN/A# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26955SN/A# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27955SN/A# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28955SN/A# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29955SN/A# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
302665Ssaidi@eecs.umich.edu#
312665Ssaidi@eecs.umich.edu# Authors: Steve Reinhardt
325863Snate@binkert.org#          Nathan Binkert
33955SN/A
34955SN/A###################################################
35955SN/A#
36955SN/A# SCons top-level build description (SConstruct) file.
37955SN/A#
382632Sstever@eecs.umich.edu# While in this directory ('m5'), just type 'scons' to build the default
392632Sstever@eecs.umich.edu# configuration (see below), or type 'scons build/<CONFIG>/<binary>'
402632Sstever@eecs.umich.edu# to build some other configuration (e.g., 'build/ALPHA_FS/m5.opt' for
412632Sstever@eecs.umich.edu# the optimized full-system version).
42955SN/A#
432632Sstever@eecs.umich.edu# You can build M5 in a different directory as long as there is a
442632Sstever@eecs.umich.edu# 'build/<CONFIG>' somewhere along the target path.  The build system
452761Sstever@eecs.umich.edu# expects that all configs under the same build directory are being
462632Sstever@eecs.umich.edu# built for the same host system.
472632Sstever@eecs.umich.edu#
482632Sstever@eecs.umich.edu# Examples:
492761Sstever@eecs.umich.edu#
502761Sstever@eecs.umich.edu#   The following two commands are equivalent.  The '-u' option tells
512761Sstever@eecs.umich.edu#   scons to search up the directory tree for this SConstruct file.
522632Sstever@eecs.umich.edu#   % cd <path-to-src>/m5 ; scons build/ALPHA_FS/m5.debug
532632Sstever@eecs.umich.edu#   % cd <path-to-src>/m5/build/ALPHA_FS; scons -u m5.debug
542761Sstever@eecs.umich.edu#
552761Sstever@eecs.umich.edu#   The following two commands are equivalent and demonstrate building
562761Sstever@eecs.umich.edu#   in a directory outside of the source tree.  The '-C' option tells
572761Sstever@eecs.umich.edu#   scons to chdir to the specified directory to find this SConstruct
582761Sstever@eecs.umich.edu#   file.
592632Sstever@eecs.umich.edu#   % cd <path-to-src>/m5 ; scons /local/foo/build/ALPHA_FS/m5.debug
602632Sstever@eecs.umich.edu#   % cd /local/foo/build/ALPHA_FS; scons -C <path-to-src>/m5 m5.debug
612632Sstever@eecs.umich.edu#
622632Sstever@eecs.umich.edu# You can use 'scons -H' to print scons options.  If you're in this
632632Sstever@eecs.umich.edu# 'm5' directory (or use -u or -C to tell scons where to find this
642632Sstever@eecs.umich.edu# file), you can use 'scons -h' to print all the M5-specific build
652632Sstever@eecs.umich.edu# options as well.
66955SN/A#
67955SN/A###################################################
68955SN/A
695863Snate@binkert.org# Check for recent-enough Python and SCons versions.
705863Snate@binkert.orgtry:
715863Snate@binkert.org    # Really old versions of scons only take two options for the
725863Snate@binkert.org    # function, so check once without the revision and once with the
735863Snate@binkert.org    # revision, the first instance will fail for stuff other than
745863Snate@binkert.org    # 0.98, and the second will fail for 0.98.0
755863Snate@binkert.org    EnsureSConsVersion(0, 98)
765863Snate@binkert.org    EnsureSConsVersion(0, 98, 1)
775863Snate@binkert.orgexcept SystemExit, e:
785863Snate@binkert.org    print """
795863Snate@binkert.orgFor more details, see:
805863Snate@binkert.org    http://m5sim.org/wiki/index.php/Compiling_M5
815863Snate@binkert.org"""
825863Snate@binkert.org    raise
835863Snate@binkert.org
845863Snate@binkert.org# We ensure the python version early because we have stuff that
855863Snate@binkert.org# requires python 2.4
865863Snate@binkert.orgtry:
875863Snate@binkert.org    EnsurePythonVersion(2, 4)
885863Snate@binkert.orgexcept SystemExit, e:
895863Snate@binkert.org    print """
905863Snate@binkert.orgYou can use a non-default installation of the Python interpreter by
915863Snate@binkert.orgeither (1) rearranging your PATH so that scons finds the non-default
925863Snate@binkert.org'python' first or (2) explicitly invoking an alternative interpreter
935863Snate@binkert.orgon the scons script.
945863Snate@binkert.org
955863Snate@binkert.orgFor more details, see:
965863Snate@binkert.org    http://m5sim.org/wiki/index.php/Using_a_non-default_Python_installation
975863Snate@binkert.org"""
985863Snate@binkert.org    raise
995863Snate@binkert.org
1006654Snate@binkert.org# Global Python includes
101955SN/Aimport os
1025396Ssaidi@eecs.umich.eduimport re
1035863Snate@binkert.orgimport subprocess
1045863Snate@binkert.orgimport sys
1054202Sbinkertn@umich.edu
1065863Snate@binkert.orgfrom os import mkdir, environ
1075863Snate@binkert.orgfrom os.path import abspath, basename, dirname, expanduser, normpath
1085863Snate@binkert.orgfrom os.path import exists,  isdir, isfile
1095863Snate@binkert.orgfrom os.path import join as joinpath, split as splitpath
110955SN/A
1116654Snate@binkert.org# SCons includes
1125273Sstever@gmail.comimport SCons
1135871Snate@binkert.orgimport SCons.Node
1145273Sstever@gmail.com
1156655Snate@binkert.orgextra_python_paths = [
1166655Snate@binkert.org    Dir('src/python').srcnode().abspath, # M5 includes
1176655Snate@binkert.org    Dir('ext/ply').srcnode().abspath, # ply is used by several files
1186655Snate@binkert.org    ]
1196655Snate@binkert.org    
1206655Snate@binkert.orgsys.path[1:1] = extra_python_paths
1215871Snate@binkert.org
1226654Snate@binkert.orgfrom m5.util import compareVersions, readCommand
1235396Ssaidi@eecs.umich.edu
1247816Ssteve.reinhardt@amd.comAddOption('--colors', dest='use_colors', action='store_true')
1257816Ssteve.reinhardt@amd.comAddOption('--no-colors', dest='use_colors', action='store_false')
1267816Ssteve.reinhardt@amd.comuse_colors = GetOption('use_colors')
1277816Ssteve.reinhardt@amd.com
1287816Ssteve.reinhardt@amd.comif use_colors:
1297816Ssteve.reinhardt@amd.com    from m5.util.terminal import termcap
1307816Ssteve.reinhardt@amd.comelif use_colors is None:
1317816Ssteve.reinhardt@amd.com    # option unspecified; default behavior is to use colors iff isatty
1327816Ssteve.reinhardt@amd.com    from m5.util.terminal import tty_termcap as termcap
1337816Ssteve.reinhardt@amd.comelse:
1347816Ssteve.reinhardt@amd.com    from m5.util.terminal import no_termcap as termcap
1357816Ssteve.reinhardt@amd.com
1365871Snate@binkert.org########################################################################
1375871Snate@binkert.org#
1386121Snate@binkert.org# Set up the main build environment.
1395871Snate@binkert.org#
1405871Snate@binkert.org########################################################################
1416003Snate@binkert.orguse_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 'PATH',
1426655Snate@binkert.org                 'PYTHONPATH', 'RANLIB' ])
143955SN/A
1445871Snate@binkert.orguse_env = {}
1455871Snate@binkert.orgfor key,val in os.environ.iteritems():
1465871Snate@binkert.org    if key in use_vars or key.startswith("M5"):
1475871Snate@binkert.org        use_env[key] = val
148955SN/A
1496121Snate@binkert.orgmain = Environment(ENV=use_env)
1506121Snate@binkert.orgmain.root = Dir(".")         # The current directory (where this file lives).
1516121Snate@binkert.orgmain.srcdir = Dir("src")     # The source directory
1521533SN/A
1536655Snate@binkert.org# add useful python code PYTHONPATH so it can be used by subprocesses
1546655Snate@binkert.org# as well
1556655Snate@binkert.orgmain.AppendENVPath('PYTHONPATH', extra_python_paths)
1566655Snate@binkert.org
1575871Snate@binkert.org########################################################################
1585871Snate@binkert.org#
1595863Snate@binkert.org# Mercurial Stuff.
1605871Snate@binkert.org#
1615871Snate@binkert.org# If the M5 directory is a mercurial repository, we should do some
1625871Snate@binkert.org# extra things.
1635871Snate@binkert.org#
1645871Snate@binkert.org########################################################################
1655863Snate@binkert.org
1666121Snate@binkert.orghgdir = main.root.Dir(".hg")
1675863Snate@binkert.org
1685871Snate@binkert.orgmercurial_style_message = """
1694678Snate@binkert.orgYou're missing the M5 style hook.
1704678Snate@binkert.orgPlease install the hook so we can ensure that all code fits a common style.
1714678Snate@binkert.org
1724678Snate@binkert.orgAll you'd need to do is add the following lines to your repository .hg/hgrc
1734678Snate@binkert.orgor your personal .hgrc
1744678Snate@binkert.org----------------
1754678Snate@binkert.org
1764678Snate@binkert.org[extensions]
1774678Snate@binkert.orgstyle = %s/util/style.py
1784678Snate@binkert.org
1794678Snate@binkert.org[hooks]
1804678Snate@binkert.orgpretxncommit.style = python:style.check_whitespace
1817807Snate@binkert.orgpre-qrefresh.style = python:style.check_whitespace
1826121Snate@binkert.org""" % (main.root)
1834678Snate@binkert.org
1845871Snate@binkert.orgmercurial_bin_not_found = """
1855871Snate@binkert.orgMercurial binary cannot be found, unfortunately this means that we
1865871Snate@binkert.orgcannot easily determine the version of M5 that you are running and
1875871Snate@binkert.orgthis makes error messages more difficult to collect.  Please consider
1885871Snate@binkert.orginstalling mercurial if you choose to post an error message
1895871Snate@binkert.org"""
1905871Snate@binkert.org
1915871Snate@binkert.orgmercurial_lib_not_found = """
1925871Snate@binkert.orgMercurial libraries cannot be found, ignoring style hook
1935871Snate@binkert.orgIf you are actually a M5 developer, please fix this and
1945871Snate@binkert.orgrun the style hook. It is important.
1955871Snate@binkert.org"""
1965871Snate@binkert.org
1975990Ssaidi@eecs.umich.eduhg_info = "Unknown"
1985871Snate@binkert.orgif hgdir.exists():
1995871Snate@binkert.org    # 1) Grab repository revision if we know it.
2005871Snate@binkert.org    cmd = "hg id -n -i -t -b"
2014678Snate@binkert.org    try:
2026654Snate@binkert.org        hg_info = readCommand(cmd, cwd=main.root.abspath).strip()
2035871Snate@binkert.org    except OSError:
2045871Snate@binkert.org        print mercurial_bin_not_found
2055871Snate@binkert.org
2065871Snate@binkert.org    # 2) Ensure that the style hook is in place.
2075871Snate@binkert.org    try:
2085871Snate@binkert.org        ui = None
2095871Snate@binkert.org        if ARGUMENTS.get('IGNORE_STYLE') != 'True':
2105871Snate@binkert.org            from mercurial import ui
2115871Snate@binkert.org            ui = ui.ui()
2124678Snate@binkert.org    except ImportError:
2135871Snate@binkert.org        print mercurial_lib_not_found
2144678Snate@binkert.org
2155871Snate@binkert.org    if ui is not None:
2165871Snate@binkert.org        ui.readconfig(hgdir.File('hgrc').abspath)
2175871Snate@binkert.org        style_hook = ui.config('hooks', 'pretxncommit.style', None)
2185871Snate@binkert.org
2195871Snate@binkert.org        if not style_hook:
2205871Snate@binkert.org            print mercurial_style_message
2215871Snate@binkert.org            sys.exit(1)
2225871Snate@binkert.orgelse:
2235871Snate@binkert.org    print ".hg directory not found"
2246121Snate@binkert.org
2256121Snate@binkert.orgmain['HG_INFO'] = hg_info
2265863Snate@binkert.org
227955SN/A###################################################
228955SN/A#
2292632Sstever@eecs.umich.edu# Figure out which configurations to set up based on the path(s) of
2302632Sstever@eecs.umich.edu# the target(s).
231955SN/A#
232955SN/A###################################################
233955SN/A
234955SN/A# Find default configuration & binary.
2355863Snate@binkert.orgDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA_SE/m5.debug'))
236955SN/A
2372632Sstever@eecs.umich.edu# helper function: find last occurrence of element in list
2382632Sstever@eecs.umich.edudef rfind(l, elt, offs = -1):
2392632Sstever@eecs.umich.edu    for i in range(len(l)+offs, 0, -1):
2402632Sstever@eecs.umich.edu        if l[i] == elt:
2412632Sstever@eecs.umich.edu            return i
2422632Sstever@eecs.umich.edu    raise ValueError, "element not found"
2432632Sstever@eecs.umich.edu
2442632Sstever@eecs.umich.edu# Each target must have 'build' in the interior of the path; the
2452632Sstever@eecs.umich.edu# directory below this will determine the build parameters.  For
2462632Sstever@eecs.umich.edu# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we
2472632Sstever@eecs.umich.edu# recognize that ALPHA_SE specifies the configuration because it
2482632Sstever@eecs.umich.edu# follow 'build' in the bulid path.
2492632Sstever@eecs.umich.edu
2503718Sstever@eecs.umich.edu# Generate absolute paths to targets so we can see where the build dir is
2513718Sstever@eecs.umich.eduif COMMAND_LINE_TARGETS:
2523718Sstever@eecs.umich.edu    # Ask SCons which directory it was invoked from
2533718Sstever@eecs.umich.edu    launch_dir = GetLaunchDir()
2543718Sstever@eecs.umich.edu    # Make targets relative to invocation directory
2555863Snate@binkert.org    abs_targets = [ normpath(joinpath(launch_dir, str(x))) for x in \
2565863Snate@binkert.org                    COMMAND_LINE_TARGETS]
2573718Sstever@eecs.umich.eduelse:
2583718Sstever@eecs.umich.edu    # Default targets are relative to root of tree
2596121Snate@binkert.org    abs_targets = [ normpath(joinpath(main.root.abspath, str(x))) for x in \
2605863Snate@binkert.org                    DEFAULT_TARGETS]
2613718Sstever@eecs.umich.edu
2623718Sstever@eecs.umich.edu
2632634Sstever@eecs.umich.edu# Generate a list of the unique build roots and configs that the
2642634Sstever@eecs.umich.edu# collected targets reference.
2655863Snate@binkert.orgvariant_paths = []
2662638Sstever@eecs.umich.edubuild_root = None
2672632Sstever@eecs.umich.edufor t in abs_targets:
2682632Sstever@eecs.umich.edu    path_dirs = t.split('/')
2692632Sstever@eecs.umich.edu    try:
2702632Sstever@eecs.umich.edu        build_top = rfind(path_dirs, 'build', -2)
2712632Sstever@eecs.umich.edu    except:
2722632Sstever@eecs.umich.edu        print "Error: no non-leaf 'build' dir found on target path", t
2731858SN/A        Exit(1)
2743716Sstever@eecs.umich.edu    this_build_root = joinpath('/',*path_dirs[:build_top+1])
2752638Sstever@eecs.umich.edu    if not build_root:
2762638Sstever@eecs.umich.edu        build_root = this_build_root
2772638Sstever@eecs.umich.edu    else:
2782638Sstever@eecs.umich.edu        if this_build_root != build_root:
2792638Sstever@eecs.umich.edu            print "Error: build targets not under same build root\n"\
2802638Sstever@eecs.umich.edu                  "  %s\n  %s" % (build_root, this_build_root)
2812638Sstever@eecs.umich.edu            Exit(1)
2825863Snate@binkert.org    variant_path = joinpath('/',*path_dirs[:build_top+2])
2835863Snate@binkert.org    if variant_path not in variant_paths:
2845863Snate@binkert.org        variant_paths.append(variant_path)
285955SN/A
2865341Sstever@gmail.com# Make sure build_root exists (might not if this is the first build there)
2875341Sstever@gmail.comif not isdir(build_root):
2885863Snate@binkert.org    mkdir(build_root)
2897756SAli.Saidi@ARM.commain['BUILDROOT'] = build_root
2905341Sstever@gmail.com
2916121Snate@binkert.orgExport('main')
2924494Ssaidi@eecs.umich.edu
2936121Snate@binkert.orgmain.SConsignFile(joinpath(build_root, "sconsign"))
2941105SN/A
2952667Sstever@eecs.umich.edu# Default duplicate option is to use hard links, but this messes up
2962667Sstever@eecs.umich.edu# when you use emacs to edit a file in the target dir, as emacs moves
2972667Sstever@eecs.umich.edu# file to file~ then copies to file, breaking the link.  Symbolic
2982667Sstever@eecs.umich.edu# (soft) links work better.
2996121Snate@binkert.orgmain.SetOption('duplicate', 'soft-copy')
3002667Sstever@eecs.umich.edu
3015341Sstever@gmail.com#
3025863Snate@binkert.org# Set up global sticky variables... these are common to an entire build
3035341Sstever@gmail.com# tree (not specific to a particular build like ALPHA_SE)
3045341Sstever@gmail.com#
3055341Sstever@gmail.com
3065863Snate@binkert.org# Variable validators & converters for global sticky variables
3075341Sstever@gmail.comdef PathListMakeAbsolute(val):
3085341Sstever@gmail.com    if not val:
3095341Sstever@gmail.com        return val
3105863Snate@binkert.org    f = lambda p: abspath(expanduser(p))
3115341Sstever@gmail.com    return ':'.join(map(f, val.split(':')))
3125341Sstever@gmail.com
3135341Sstever@gmail.comdef PathListAllExist(key, val, env):
3145341Sstever@gmail.com    if not val:
3155341Sstever@gmail.com        return
3165341Sstever@gmail.com    paths = val.split(':')
3175341Sstever@gmail.com    for path in paths:
3185341Sstever@gmail.com        if not isdir(path):
3195341Sstever@gmail.com            raise SCons.Errors.UserError("Path does not exist: '%s'" % path)
3205341Sstever@gmail.com
3215863Snate@binkert.orgglobal_sticky_vars_file = joinpath(build_root, 'variables.global')
3225341Sstever@gmail.com
3235863Snate@binkert.orgglobal_sticky_vars = Variables(global_sticky_vars_file, args=ARGUMENTS)
3247756SAli.Saidi@ARM.comglobal_nonsticky_vars = Variables(args=ARGUMENTS)
3255341Sstever@gmail.com
3265863Snate@binkert.orgglobal_sticky_vars.AddVariables(
3276121Snate@binkert.org    ('CC', 'C compiler', environ.get('CC', main['CC'])),
3286121Snate@binkert.org    ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])),
3295397Ssaidi@eecs.umich.edu    ('BATCH', 'Use batch pool for build and tests', False),
3305397Ssaidi@eecs.umich.edu    ('BATCH_CMD', 'Batch pool submission command name', 'qdo'),
3317727SAli.Saidi@ARM.com    ('M5_BUILD_CACHE', 'Cache built objects in this directory', False),
3325341Sstever@gmail.com    ('EXTRAS', 'Add Extra directories to the compilation', '',
3336168Snate@binkert.org     PathListAllExist, PathListMakeAbsolute),
3346168Snate@binkert.org    )
3355341Sstever@gmail.com
3367756SAli.Saidi@ARM.comglobal_nonsticky_vars.AddVariables(
3377756SAli.Saidi@ARM.com    ('VERBOSE', 'Print full tool command lines', False),
3387756SAli.Saidi@ARM.com    ('update_ref', 'Update test reference outputs', False)
3397756SAli.Saidi@ARM.com    )
3407756SAli.Saidi@ARM.com
3417756SAli.Saidi@ARM.com
3425341Sstever@gmail.com# base help text
3435341Sstever@gmail.comhelp_text = '''
3445341Sstever@gmail.comUsage: scons [scons options] [build options] [target(s)]
3455341Sstever@gmail.com
3465863Snate@binkert.orgGlobal sticky options:
3475341Sstever@gmail.com'''
3485341Sstever@gmail.com
3496121Snate@binkert.org# Update main environment with values from ARGUMENTS & global_sticky_vars_file
3506121Snate@binkert.orgglobal_sticky_vars.Update(main)
3517756SAli.Saidi@ARM.comglobal_nonsticky_vars.Update(main)
3525341Sstever@gmail.com
3536814Sgblack@eecs.umich.eduhelp_text += global_sticky_vars.GenerateHelpText(main)
3547756SAli.Saidi@ARM.comhelp_text += global_nonsticky_vars.GenerateHelpText(main)
3556814Sgblack@eecs.umich.edu
3565863Snate@binkert.org# Save sticky variable settings back to current variables file
3576121Snate@binkert.orgglobal_sticky_vars.Save(global_sticky_vars_file, main)
3585341Sstever@gmail.com
3595863Snate@binkert.org# Parse EXTRAS variable to build list of all directories where we're
3605341Sstever@gmail.com# look for sources etc.  This list is exported as base_dir_list.
3616121Snate@binkert.orgbase_dir = main.srcdir.abspath
3626121Snate@binkert.orgif main['EXTRAS']:
3636121Snate@binkert.org    extras_dir_list = main['EXTRAS'].split(':')
3645742Snate@binkert.orgelse:
3655742Snate@binkert.org    extras_dir_list = []
3665341Sstever@gmail.com
3675742Snate@binkert.orgExport('base_dir')
3685742Snate@binkert.orgExport('extras_dir_list')
3695341Sstever@gmail.com
3706017Snate@binkert.org# the ext directory should be on the #includes path
3716121Snate@binkert.orgmain.Append(CPPPATH=[Dir('ext')])
3726017Snate@binkert.org
3737816Ssteve.reinhardt@amd.comdef strip_build_path(path, env):
3747756SAli.Saidi@ARM.com    path = str(path)
3757756SAli.Saidi@ARM.com    variant_base = env['BUILDROOT'] + os.path.sep
3767756SAli.Saidi@ARM.com    if path.startswith(variant_base):
3777756SAli.Saidi@ARM.com        path = path[len(variant_base):]
3787756SAli.Saidi@ARM.com    elif path.startswith('build/'):
3797756SAli.Saidi@ARM.com        path = path[6:]
3807756SAli.Saidi@ARM.com    return path
3817756SAli.Saidi@ARM.com
3827816Ssteve.reinhardt@amd.com# Generate a string of the form:
3837816Ssteve.reinhardt@amd.com#   common/path/prefix/src1, src2 -> tgt1, tgt2
3847816Ssteve.reinhardt@amd.com# to print while building.
3857816Ssteve.reinhardt@amd.comclass Transform(object):
3867816Ssteve.reinhardt@amd.com    # all specific color settings should be here and nowhere else
3877816Ssteve.reinhardt@amd.com    tool_color = termcap.Normal
3887816Ssteve.reinhardt@amd.com    pfx_color = termcap.Yellow
3897816Ssteve.reinhardt@amd.com    srcs_color = termcap.Yellow + termcap.Bold
3907816Ssteve.reinhardt@amd.com    arrow_color = termcap.Blue + termcap.Bold
3917816Ssteve.reinhardt@amd.com    tgts_color = termcap.Yellow + termcap.Bold
3927756SAli.Saidi@ARM.com
3937816Ssteve.reinhardt@amd.com    def __init__(self, tool, max_sources=99):
3947816Ssteve.reinhardt@amd.com        self.format = self.tool_color + (" [%8s] " % tool) \
3957816Ssteve.reinhardt@amd.com                      + self.pfx_color + "%s" \
3967816Ssteve.reinhardt@amd.com                      + self.srcs_color + "%s" \
3977816Ssteve.reinhardt@amd.com                      + self.arrow_color + " -> " \
3987816Ssteve.reinhardt@amd.com                      + self.tgts_color + "%s" \
3997816Ssteve.reinhardt@amd.com                      + termcap.Normal
4007816Ssteve.reinhardt@amd.com        self.max_sources = max_sources
4017816Ssteve.reinhardt@amd.com
4027816Ssteve.reinhardt@amd.com    def __call__(self, target, source, env, for_signature=None):
4037816Ssteve.reinhardt@amd.com        # truncate source list according to max_sources param
4047816Ssteve.reinhardt@amd.com        source = source[0:self.max_sources]
4057816Ssteve.reinhardt@amd.com        def strip(f):
4067816Ssteve.reinhardt@amd.com            return strip_build_path(str(f), env)
4077816Ssteve.reinhardt@amd.com        if len(source) > 0:
4087816Ssteve.reinhardt@amd.com            srcs = map(strip, source)
4097816Ssteve.reinhardt@amd.com        else:
4107816Ssteve.reinhardt@amd.com            srcs = ['']
4117816Ssteve.reinhardt@amd.com        tgts = map(strip, target)
4127816Ssteve.reinhardt@amd.com        # surprisingly, os.path.commonprefix is a dumb char-by-char string
4137816Ssteve.reinhardt@amd.com        # operation that has nothing to do with paths.
4147816Ssteve.reinhardt@amd.com        com_pfx = os.path.commonprefix(srcs + tgts)
4157816Ssteve.reinhardt@amd.com        com_pfx_len = len(com_pfx)
4167816Ssteve.reinhardt@amd.com        if com_pfx:
4177816Ssteve.reinhardt@amd.com            # do some cleanup and sanity checking on common prefix
4187816Ssteve.reinhardt@amd.com            if com_pfx[-1] == ".":
4197816Ssteve.reinhardt@amd.com                # prefix matches all but file extension: ok
4207816Ssteve.reinhardt@amd.com                # back up one to change 'foo.cc -> o' to 'foo.cc -> .o'
4217816Ssteve.reinhardt@amd.com                com_pfx = com_pfx[0:-1]
4227816Ssteve.reinhardt@amd.com            elif com_pfx[-1] == "/":
4237816Ssteve.reinhardt@amd.com                # common prefix is directory path: OK
4247816Ssteve.reinhardt@amd.com                pass
4257816Ssteve.reinhardt@amd.com            else:
4267816Ssteve.reinhardt@amd.com                src0_len = len(srcs[0])
4277816Ssteve.reinhardt@amd.com                tgt0_len = len(tgts[0])
4287816Ssteve.reinhardt@amd.com                if src0_len == com_pfx_len:
4297816Ssteve.reinhardt@amd.com                    # source is a substring of target, OK
4307816Ssteve.reinhardt@amd.com                    pass
4317816Ssteve.reinhardt@amd.com                elif tgt0_len == com_pfx_len:
4327816Ssteve.reinhardt@amd.com                    # target is a substring of source, need to back up to
4337816Ssteve.reinhardt@amd.com                    # avoid empty string on RHS of arrow
4347816Ssteve.reinhardt@amd.com                    sep_idx = com_pfx.rfind(".")
4357816Ssteve.reinhardt@amd.com                    if sep_idx != -1:
4367816Ssteve.reinhardt@amd.com                        com_pfx = com_pfx[0:sep_idx]
4377816Ssteve.reinhardt@amd.com                    else:
4387816Ssteve.reinhardt@amd.com                        com_pfx = ''
4397816Ssteve.reinhardt@amd.com                elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".":
4407816Ssteve.reinhardt@amd.com                    # still splitting at file extension: ok
4417816Ssteve.reinhardt@amd.com                    pass
4427816Ssteve.reinhardt@amd.com                else:
4437816Ssteve.reinhardt@amd.com                    # probably a fluke; ignore it
4447816Ssteve.reinhardt@amd.com                    com_pfx = ''
4457816Ssteve.reinhardt@amd.com        # recalculate length in case com_pfx was modified
4467816Ssteve.reinhardt@amd.com        com_pfx_len = len(com_pfx)
4477816Ssteve.reinhardt@amd.com        def fmt(files):
4487816Ssteve.reinhardt@amd.com            f = map(lambda s: s[com_pfx_len:], files)
4497816Ssteve.reinhardt@amd.com            return ', '.join(f)
4507816Ssteve.reinhardt@amd.com        return self.format % (com_pfx, fmt(srcs), fmt(tgts))
4517816Ssteve.reinhardt@amd.com
4527816Ssteve.reinhardt@amd.comExport('Transform')
4537816Ssteve.reinhardt@amd.com
4547756SAli.Saidi@ARM.com
4557756SAli.Saidi@ARM.comif main['VERBOSE']:
4567756SAli.Saidi@ARM.com    def MakeAction(action, string, *args, **kwargs):
4577756SAli.Saidi@ARM.com        return Action(action, *args, **kwargs)
4587756SAli.Saidi@ARM.comelse:
4597756SAli.Saidi@ARM.com    MakeAction = Action
4607816Ssteve.reinhardt@amd.com    main['CCCOMSTR']        = Transform("CC")
4617816Ssteve.reinhardt@amd.com    main['CXXCOMSTR']       = Transform("CXX")
4627816Ssteve.reinhardt@amd.com    main['ASCOMSTR']        = Transform("AS")
4637816Ssteve.reinhardt@amd.com    main['SWIGCOMSTR']      = Transform("SWIG")
4647816Ssteve.reinhardt@amd.com    main['ARCOMSTR']        = Transform("AR", 0)
4657816Ssteve.reinhardt@amd.com    main['LINKCOMSTR']      = Transform("LINK", 0)
4667816Ssteve.reinhardt@amd.com    main['RANLIBCOMSTR']    = Transform("RANLIB", 0)
4677816Ssteve.reinhardt@amd.com    main['M4COMSTR']        = Transform("M4")
4687816Ssteve.reinhardt@amd.com    main['SHCCCOMSTR']      = Transform("SHCC")
4697816Ssteve.reinhardt@amd.com    main['SHCXXCOMSTR']     = Transform("SHCXX")
4707756SAli.Saidi@ARM.comExport('MakeAction')
4717756SAli.Saidi@ARM.com
4726654Snate@binkert.orgCXX_version = readCommand([main['CXX'],'--version'], exception=False)
4736654Snate@binkert.orgCXX_V = readCommand([main['CXX'],'-V'], exception=False)
4745871Snate@binkert.org
4756121Snate@binkert.orgmain['GCC'] = CXX_version and CXX_version.find('g++') >= 0
4766121Snate@binkert.orgmain['SUNCC'] = CXX_V and CXX_V.find('Sun C++') >= 0
4776121Snate@binkert.orgmain['ICC'] = CXX_V and CXX_V.find('Intel') >= 0
4786121Snate@binkert.orgif main['GCC'] + main['SUNCC'] + main['ICC'] > 1:
4793940Ssaidi@eecs.umich.edu    print 'Error: How can we have two at the same time?'
4803918Ssaidi@eecs.umich.edu    Exit(1)
4813918Ssaidi@eecs.umich.edu
4821858SN/A# Set up default C++ compiler flags
4836121Snate@binkert.orgif main['GCC']:
4847739Sgblack@eecs.umich.edu    main.Append(CCFLAGS=['-pipe'])
4857739Sgblack@eecs.umich.edu    main.Append(CCFLAGS=['-fno-strict-aliasing'])
4866143Snate@binkert.org    main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef'])
4877739Sgblack@eecs.umich.edu    main.Append(CXXFLAGS=['-Wno-deprecated'])
4887618SAli.Saidi@arm.com    # Read the GCC version to check for versions with bugs
4897618SAli.Saidi@arm.com    # Note CCVERSION doesn't work here because it is run with the CC
4907618SAli.Saidi@arm.com    # before we override it from the command line
4917618SAli.Saidi@arm.com    gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False)
4927618SAli.Saidi@arm.com    if not compareVersions(gcc_version, '4.4.1') or \
4937618SAli.Saidi@arm.com       not compareVersions(gcc_version, '4.4.2'):
4947618SAli.Saidi@arm.com        print 'Info: Tree vectorizer in GCC 4.4.1 & 4.4.2 is buggy, disabling.'
4957739Sgblack@eecs.umich.edu        main.Append(CCFLAGS=['-fno-tree-vectorize'])
4966121Snate@binkert.orgelif main['ICC']:
4973940Ssaidi@eecs.umich.edu    pass #Fix me... add warning flags once we clean up icc warnings
4986121Snate@binkert.orgelif main['SUNCC']:
4997739Sgblack@eecs.umich.edu    main.Append(CCFLAGS=['-Qoption ccfe'])
5007739Sgblack@eecs.umich.edu    main.Append(CCFLAGS=['-features=gcc'])
5017739Sgblack@eecs.umich.edu    main.Append(CCFLAGS=['-features=extensions'])
5027739Sgblack@eecs.umich.edu    main.Append(CCFLAGS=['-library=stlport4'])
5037739Sgblack@eecs.umich.edu    main.Append(CCFLAGS=['-xar'])
5047739Sgblack@eecs.umich.edu    #main.Append(CCFLAGS=['-instances=semiexplicit'])
5053918Ssaidi@eecs.umich.eduelse:
5063918Ssaidi@eecs.umich.edu    print 'Error: Don\'t know what compiler options to use for your compiler.'
5073940Ssaidi@eecs.umich.edu    print '       Please fix SConstruct and src/SConscript and try again.'
5083918Ssaidi@eecs.umich.edu    Exit(1)
5093918Ssaidi@eecs.umich.edu
5106157Snate@binkert.org# Set up common yacc/bison flags (needed for Ruby)
5116157Snate@binkert.orgmain['YACCFLAGS'] = '-d'
5126157Snate@binkert.orgmain['YACCHXXFILESUFFIX'] = '.hh'
5136157Snate@binkert.org
5145397Ssaidi@eecs.umich.edu# Do this after we save setting back, or else we'll tack on an
5155397Ssaidi@eecs.umich.edu# extra 'qdo' every time we run scons.
5166121Snate@binkert.orgif main['BATCH']:
5176121Snate@binkert.org    main['CC']     = main['BATCH_CMD'] + ' ' + main['CC']
5186121Snate@binkert.org    main['CXX']    = main['BATCH_CMD'] + ' ' + main['CXX']
5196121Snate@binkert.org    main['AS']     = main['BATCH_CMD'] + ' ' + main['AS']
5206121Snate@binkert.org    main['AR']     = main['BATCH_CMD'] + ' ' + main['AR']
5216121Snate@binkert.org    main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB']
5225397Ssaidi@eecs.umich.edu
5231851SN/Aif sys.platform == 'cygwin':
5241851SN/A    # cygwin has some header file issues...
5257739Sgblack@eecs.umich.edu    main.Append(CCFLAGS=["-Wno-uninitialized"])
526955SN/A
5273053Sstever@eecs.umich.edu# Check for SWIG
5286121Snate@binkert.orgif not main.has_key('SWIG'):
5293053Sstever@eecs.umich.edu    print 'Error: SWIG utility not found.'
5303053Sstever@eecs.umich.edu    print '       Please install (see http://www.swig.org) and retry.'
5313053Sstever@eecs.umich.edu    Exit(1)
5323053Sstever@eecs.umich.edu
5333053Sstever@eecs.umich.edu# Check for appropriate SWIG version
5346654Snate@binkert.orgswig_version = readCommand(('swig', '-version'), exception='').split()
5353053Sstever@eecs.umich.edu# First 3 words should be "SWIG Version x.y.z"
5364742Sstever@eecs.umich.eduif len(swig_version) < 3 or \
5374742Sstever@eecs.umich.edu        swig_version[0] != 'SWIG' or swig_version[1] != 'Version':
5383053Sstever@eecs.umich.edu    print 'Error determining SWIG version.'
5393053Sstever@eecs.umich.edu    Exit(1)
5403053Sstever@eecs.umich.edu
5413053Sstever@eecs.umich.edumin_swig_version = '1.3.28'
5426654Snate@binkert.orgif compareVersions(swig_version[2], min_swig_version) < 0:
5433053Sstever@eecs.umich.edu    print 'Error: SWIG version', min_swig_version, 'or newer required.'
5443053Sstever@eecs.umich.edu    print '       Installed version:', swig_version[2]
5453053Sstever@eecs.umich.edu    Exit(1)
5463053Sstever@eecs.umich.edu
5472667Sstever@eecs.umich.edu# Set up SWIG flags & scanner
5484554Sbinkertn@umich.eduswig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS')
5496121Snate@binkert.orgmain.Append(SWIGFLAGS=swig_flags)
5502667Sstever@eecs.umich.edu
5514554Sbinkertn@umich.edu# filter out all existing swig scanners, they mess up the dependency
5524554Sbinkertn@umich.edu# stuff for some reason
5534554Sbinkertn@umich.eduscanners = []
5546121Snate@binkert.orgfor scanner in main['SCANNERS']:
5554554Sbinkertn@umich.edu    skeys = scanner.skeys
5564554Sbinkertn@umich.edu    if skeys == '.i':
5574554Sbinkertn@umich.edu        continue
5584781Snate@binkert.org
5594554Sbinkertn@umich.edu    if isinstance(skeys, (list, tuple)) and '.i' in skeys:
5604554Sbinkertn@umich.edu        continue
5612667Sstever@eecs.umich.edu
5624554Sbinkertn@umich.edu    scanners.append(scanner)
5634554Sbinkertn@umich.edu
5644554Sbinkertn@umich.edu# add the new swig scanner that we like better
5654554Sbinkertn@umich.edufrom SCons.Scanner import ClassicCPP as CPPScanner
5662667Sstever@eecs.umich.eduswig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")'
5674554Sbinkertn@umich.eduscanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re))
5682667Sstever@eecs.umich.edu
5694554Sbinkertn@umich.edu# replace the scanners list that has what we want
5706121Snate@binkert.orgmain['SCANNERS'] = scanners
5712667Sstever@eecs.umich.edu
5725522Snate@binkert.org# Add a custom Check function to the Configure context so that we can
5735522Snate@binkert.org# figure out if the compiler adds leading underscores to global
5745522Snate@binkert.org# variables.  This is needed for the autogenerated asm files that we
5755522Snate@binkert.org# use for embedding the python code.
5765522Snate@binkert.orgdef CheckLeading(context):
5775522Snate@binkert.org    context.Message("Checking for leading underscore in global variables...")
5785522Snate@binkert.org    # 1) Define a global variable called x from asm so the C compiler
5795522Snate@binkert.org    #    won't change the symbol at all.
5805522Snate@binkert.org    # 2) Declare that variable.
5815522Snate@binkert.org    # 3) Use the variable
5825522Snate@binkert.org    #
5835522Snate@binkert.org    # If the compiler prepends an underscore, this will successfully
5845522Snate@binkert.org    # link because the external symbol 'x' will be called '_x' which
5855522Snate@binkert.org    # was defined by the asm statement.  If the compiler does not
5865522Snate@binkert.org    # prepend an underscore, this will not successfully link because
5875522Snate@binkert.org    # '_x' will have been defined by assembly, while the C portion of
5885522Snate@binkert.org    # the code will be trying to use 'x'
5895522Snate@binkert.org    ret = context.TryLink('''
5905522Snate@binkert.org        asm(".globl _x; _x: .byte 0");
5915522Snate@binkert.org        extern int x;
5925522Snate@binkert.org        int main() { return x; }
5935522Snate@binkert.org        ''', extension=".c")
5945522Snate@binkert.org    context.env.Append(LEADING_UNDERSCORE=ret)
5955522Snate@binkert.org    context.Result(ret)
5965522Snate@binkert.org    return ret
5975522Snate@binkert.org
5982638Sstever@eecs.umich.edu# Platform-specific configuration.  Note again that we assume that all
5992638Sstever@eecs.umich.edu# builds under a given build root run on the same host platform.
6006121Snate@binkert.orgconf = Configure(main,
6013716Sstever@eecs.umich.edu                 conf_dir = joinpath(build_root, '.scons_config'),
6025522Snate@binkert.org                 log_file = joinpath(build_root, 'scons_config.log'),
6035522Snate@binkert.org                 custom_tests = { 'CheckLeading' : CheckLeading })
6045522Snate@binkert.org
6055522Snate@binkert.org# Check for leading underscores.  Don't really need to worry either
6065522Snate@binkert.org# way so don't need to check the return code.
6075522Snate@binkert.orgconf.CheckLeading()
6081858SN/A
6095227Ssaidi@eecs.umich.edu# Check if we should compile a 64 bit binary on Mac OS X/Darwin
6105227Ssaidi@eecs.umich.edutry:
6115227Ssaidi@eecs.umich.edu    import platform
6125227Ssaidi@eecs.umich.edu    uname = platform.uname()
6136654Snate@binkert.org    if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0:
6146654Snate@binkert.org        if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]):
6157769SAli.Saidi@ARM.com            main.Append(CCFLAGS=['-arch', 'x86_64'])
6167769SAli.Saidi@ARM.com            main.Append(CFLAGS=['-arch', 'x86_64'])
6177769SAli.Saidi@ARM.com            main.Append(LINKFLAGS=['-arch', 'x86_64'])
6187769SAli.Saidi@ARM.com            main.Append(ASFLAGS=['-arch', 'x86_64'])
6195227Ssaidi@eecs.umich.eduexcept:
6205227Ssaidi@eecs.umich.edu    pass
6215227Ssaidi@eecs.umich.edu
6225204Sstever@gmail.com# Recent versions of scons substitute a "Null" object for Configure()
6235204Sstever@gmail.com# when configuration isn't necessary, e.g., if the "--help" option is
6245204Sstever@gmail.com# present.  Unfortuantely this Null object always returns false,
6255204Sstever@gmail.com# breaking all our configuration checks.  We replace it with our own
6265204Sstever@gmail.com# more optimistic null object that returns True instead.
6275204Sstever@gmail.comif not conf:
6285204Sstever@gmail.com    def NullCheck(*args, **kwargs):
6295204Sstever@gmail.com        return True
6305204Sstever@gmail.com
6315204Sstever@gmail.com    class NullConf:
6325204Sstever@gmail.com        def __init__(self, env):
6335204Sstever@gmail.com            self.env = env
6345204Sstever@gmail.com        def Finish(self):
6355204Sstever@gmail.com            return self.env
6365204Sstever@gmail.com        def __getattr__(self, mname):
6375204Sstever@gmail.com            return NullCheck
6385204Sstever@gmail.com
6396121Snate@binkert.org    conf = NullConf(main)
6405204Sstever@gmail.com
6413118Sstever@eecs.umich.edu# Find Python include and library directories for embedding the
6423118Sstever@eecs.umich.edu# interpreter.  For consistency, we will use the same Python
6433118Sstever@eecs.umich.edu# installation used to run scons (and thus this script).  If you want
6443118Sstever@eecs.umich.edu# to link in an alternate version, see above for instructions on how
6453118Sstever@eecs.umich.edu# to invoke scons with a different copy of the Python interpreter.
6465863Snate@binkert.orgfrom distutils import sysconfig
6473118Sstever@eecs.umich.edu
6485863Snate@binkert.orgpy_getvar = sysconfig.get_config_var
6493118Sstever@eecs.umich.edu
6507457Snate@binkert.orgpy_debug = getattr(sys, 'pydebug', False)
6517457Snate@binkert.orgpy_version = 'python' + py_getvar('VERSION') + (py_debug and "_d" or "")
6525863Snate@binkert.org
6535863Snate@binkert.orgpy_general_include = sysconfig.get_python_inc()
6545863Snate@binkert.orgpy_platform_include = sysconfig.get_python_inc(plat_specific=True)
6555863Snate@binkert.orgpy_includes = [ py_general_include ]
6565863Snate@binkert.orgif py_platform_include != py_general_include:
6575863Snate@binkert.org    py_includes.append(py_platform_include)
6585863Snate@binkert.org
6596003Snate@binkert.orgpy_lib_path = [ py_getvar('LIBDIR') ]
6605863Snate@binkert.org# add the prefix/lib/pythonX.Y/config dir, but only if there is no
6615863Snate@binkert.org# shared library in prefix/lib/.
6625863Snate@binkert.orgif not py_getvar('Py_ENABLE_SHARED'):
6636120Snate@binkert.org    py_lib_path.append(py_getvar('LIBPL'))
6645863Snate@binkert.org
6655863Snate@binkert.orgpy_libs = []
6665863Snate@binkert.orgfor lib in py_getvar('LIBS').split() + py_getvar('SYSLIBS').split():
6676120Snate@binkert.org    assert lib.startswith('-l')
6686120Snate@binkert.org    lib = lib[2:]   
6695863Snate@binkert.org    if lib not in py_libs:
6705863Snate@binkert.org        py_libs.append(lib)
6716120Snate@binkert.orgpy_libs.append(py_version)
6725863Snate@binkert.org
6736121Snate@binkert.orgmain.Append(CPPPATH=py_includes)
6746121Snate@binkert.orgmain.Append(LIBPATH=py_lib_path)
6755863Snate@binkert.org
6767727SAli.Saidi@ARM.com# Cache build files in the supplied directory.
6777727SAli.Saidi@ARM.comif main['M5_BUILD_CACHE']:
6787727SAli.Saidi@ARM.com    print 'Using build cache located at', main['M5_BUILD_CACHE']
6797727SAli.Saidi@ARM.com    CacheDir(main['M5_BUILD_CACHE'])
6807727SAli.Saidi@ARM.com
6817727SAli.Saidi@ARM.com
6825863Snate@binkert.org# verify that this stuff works
6833118Sstever@eecs.umich.eduif not conf.CheckHeader('Python.h', '<>'):
6845863Snate@binkert.org    print "Error: can't find Python.h header in", py_includes
6853118Sstever@eecs.umich.edu    Exit(1)
6863118Sstever@eecs.umich.edu
6875863Snate@binkert.orgfor lib in py_libs:
6885863Snate@binkert.org    if not conf.CheckLib(lib):
6895863Snate@binkert.org        print "Error: can't find library %s required by python" % lib
6905863Snate@binkert.org        Exit(1)
6913118Sstever@eecs.umich.edu
6923483Ssaidi@eecs.umich.edu# On Solaris you need to use libsocket for socket ops
6933494Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'):
6943494Ssaidi@eecs.umich.edu   if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'):
6953483Ssaidi@eecs.umich.edu       print "Can't find library with socket calls (e.g. accept())"
6963483Ssaidi@eecs.umich.edu       Exit(1)
6973483Ssaidi@eecs.umich.edu
6983053Sstever@eecs.umich.edu# Check for zlib.  If the check passes, libz will be automatically
6993053Sstever@eecs.umich.edu# added to the LIBS environment variable.
7003918Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'):
7013053Sstever@eecs.umich.edu    print 'Error: did not find needed zlib compression library '\
7023053Sstever@eecs.umich.edu          'and/or zlib.h header file.'
7033053Sstever@eecs.umich.edu    print '       Please install zlib and try again.'
7043053Sstever@eecs.umich.edu    Exit(1)
7053053Sstever@eecs.umich.edu
7061858SN/A# Check for <fenv.h> (C99 FP environment control)
7071858SN/Ahave_fenv = conf.CheckHeader('fenv.h', '<>')
7081858SN/Aif not have_fenv:
7091858SN/A    print "Warning: Header file <fenv.h> not found."
7101858SN/A    print "         This host has no IEEE FP rounding mode control."
7111858SN/A
7125863Snate@binkert.org######################################################################
7135863Snate@binkert.org#
7141859SN/A# Check for mysql.
7155863Snate@binkert.org#
7161858SN/Amysql_config = WhereIs('mysql_config')
7175863Snate@binkert.orghave_mysql = bool(mysql_config)
7181858SN/A
7191859SN/A# Check MySQL version.
7201859SN/Aif have_mysql:
7216654Snate@binkert.org    mysql_version = readCommand(mysql_config + ' --version')
7223053Sstever@eecs.umich.edu    min_mysql_version = '4.1'
7236654Snate@binkert.org    if compareVersions(mysql_version, min_mysql_version) < 0:
7243053Sstever@eecs.umich.edu        print 'Warning: MySQL', min_mysql_version, 'or newer required.'
7253053Sstever@eecs.umich.edu        print '         Version', mysql_version, 'detected.'
7261859SN/A        have_mysql = False
7271859SN/A
7281859SN/A# Set up mysql_config commands.
7291859SN/Aif have_mysql:
7301859SN/A    mysql_config_include = mysql_config + ' --include'
7311859SN/A    if os.system(mysql_config_include + ' > /dev/null') != 0:
7321859SN/A        # older mysql_config versions don't support --include, use
7331859SN/A        # --cflags instead
7341862SN/A        mysql_config_include = mysql_config + ' --cflags | sed s/\\\'//g'
7351859SN/A    # This seems to work in all versions
7361859SN/A    mysql_config_libs = mysql_config + ' --libs'
7371859SN/A
7385863Snate@binkert.org######################################################################
7395863Snate@binkert.org#
7405863Snate@binkert.org# Finish the configuration
7415863Snate@binkert.org#
7426121Snate@binkert.orgmain = conf.Finish()
7431858SN/A
7445863Snate@binkert.org######################################################################
7455863Snate@binkert.org#
7465863Snate@binkert.org# Collect all non-global variables
7475863Snate@binkert.org#
7485863Snate@binkert.org
7492139SN/A# Define the universe of supported ISAs
7504202Sbinkertn@umich.eduall_isa_list = [ ]
7514202Sbinkertn@umich.eduExport('all_isa_list')
7522139SN/A
7536994Snate@binkert.orgclass CpuModel(object):
7546994Snate@binkert.org    '''The CpuModel class encapsulates everything the ISA parser needs to
7556994Snate@binkert.org    know about a particular CPU model.'''
7566994Snate@binkert.org
7576994Snate@binkert.org    # Dict of available CPU model objects.  Accessible as CpuModel.dict.
7586994Snate@binkert.org    dict = {}
7596994Snate@binkert.org    list = []
7606994Snate@binkert.org    defaults = []
7616994Snate@binkert.org
7626994Snate@binkert.org    # Constructor.  Automatically adds models to CpuModel.dict.
7636994Snate@binkert.org    def __init__(self, name, filename, includes, strings, default=False):
7646994Snate@binkert.org        self.name = name           # name of model
7656994Snate@binkert.org        self.filename = filename   # filename for output exec code
7666994Snate@binkert.org        self.includes = includes   # include files needed in exec file
7676994Snate@binkert.org        # The 'strings' dict holds all the per-CPU symbols we can
7686994Snate@binkert.org        # substitute into templates etc.
7696994Snate@binkert.org        self.strings = strings
7706994Snate@binkert.org
7716994Snate@binkert.org        # This cpu is enabled by default
7726994Snate@binkert.org        self.default = default
7736994Snate@binkert.org
7746994Snate@binkert.org        # Add self to dict
7756994Snate@binkert.org        if name in CpuModel.dict:
7766994Snate@binkert.org            raise AttributeError, "CpuModel '%s' already registered" % name
7776994Snate@binkert.org        CpuModel.dict[name] = self
7786994Snate@binkert.org        CpuModel.list.append(name)
7796994Snate@binkert.org
7806994Snate@binkert.orgExport('CpuModel')
7812155SN/A
7825863Snate@binkert.org# Sticky variables get saved in the variables file so they persist from
7831869SN/A# one invocation to the next (unless overridden, in which case the new
7841869SN/A# value becomes sticky).
7855863Snate@binkert.orgsticky_vars = Variables(args=ARGUMENTS)
7865863Snate@binkert.orgExport('sticky_vars')
7874202Sbinkertn@umich.edu
7886108Snate@binkert.org# Sticky variables that should be exported
7896108Snate@binkert.orgexport_vars = []
7906108Snate@binkert.orgExport('export_vars')
7916108Snate@binkert.org
7924202Sbinkertn@umich.edu# Walk the tree and execute all SConsopts scripts that wil add to the
7935863Snate@binkert.org# above variables
7945742Snate@binkert.orgfor bdir in [ base_dir ] + extras_dir_list:
7955742Snate@binkert.org    for root, dirs, files in os.walk(bdir):
7965341Sstever@gmail.com        if 'SConsopts' in files:
7975342Sstever@gmail.com            print "Reading", joinpath(root, 'SConsopts')
7985342Sstever@gmail.com            SConscript(joinpath(root, 'SConsopts'))
7994202Sbinkertn@umich.edu
8004202Sbinkertn@umich.eduall_isa_list.sort()
8014202Sbinkertn@umich.edu
8025863Snate@binkert.orgsticky_vars.AddVariables(
8035863Snate@binkert.org    EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list),
8045863Snate@binkert.org    BoolVariable('FULL_SYSTEM', 'Full-system support', False),
8056994Snate@binkert.org    ListVariable('CPU_MODELS', 'CPU models',
8066994Snate@binkert.org                 sorted(n for n,m in CpuModel.dict.iteritems() if m.default),
8076994Snate@binkert.org                 sorted(CpuModel.list)),
8085863Snate@binkert.org    BoolVariable('NO_FAST_ALLOC', 'Disable fast object allocator', False),
8095863Snate@binkert.org    BoolVariable('FAST_ALLOC_DEBUG', 'Enable fast object allocator debugging',
8105863Snate@binkert.org                 False),
8115863Snate@binkert.org    BoolVariable('FAST_ALLOC_STATS', 'Enable fast object allocator statistics',
8125863Snate@binkert.org                 False),
8135863Snate@binkert.org    BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger',
8145863Snate@binkert.org                 False),
8155863Snate@binkert.org    BoolVariable('SS_COMPATIBLE_FP',
8165863Snate@binkert.org                 'Make floating-point results compatible with SimpleScalar',
8175863Snate@binkert.org                 False),
8185863Snate@binkert.org    BoolVariable('USE_SSE2',
8195863Snate@binkert.org                 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts',
8205863Snate@binkert.org                 False),
8215863Snate@binkert.org    BoolVariable('USE_MYSQL', 'Use MySQL for stats output', have_mysql),
8225863Snate@binkert.org    BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv),
8235863Snate@binkert.org    BoolVariable('USE_CHECKER', 'Use checker for detailed CPU models', False),
8245952Ssaidi@eecs.umich.edu    BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False),
8257450Sstever@gmail.com    BoolVariable('RUBY', 'Build with Ruby', False),
8261869SN/A    )
8271858SN/A
8285863Snate@binkert.org# These variables get exported to #defines in config/*.hh (see src/SConscript).
8296108Snate@binkert.orgexport_vars += ['FULL_SYSTEM', 'USE_FENV', 'USE_MYSQL',
8306108Snate@binkert.org                'NO_FAST_ALLOC', 'FAST_ALLOC_DEBUG', 'FAST_ALLOC_STATS',
8316108Snate@binkert.org                'SS_COMPATIBLE_FP', 'USE_CHECKER', 'TARGET_ISA', 'CP_ANNOTATE']
8321858SN/A
833955SN/A###################################################
834955SN/A#
8351869SN/A# Define a SCons builder for configuration flag headers.
8361869SN/A#
8371869SN/A###################################################
8381869SN/A
8391869SN/A# This function generates a config header file that #defines the
8405863Snate@binkert.org# variable symbol to the current variable setting (0 or 1).  The source
8415863Snate@binkert.org# operands are the name of the variable and a Value node containing the
8425863Snate@binkert.org# value of the variable.
8431869SN/Adef build_config_file(target, source, env):
8445863Snate@binkert.org    (variable, value) = [s.get_contents() for s in source]
8451869SN/A    f = file(str(target[0]), 'w')
8465863Snate@binkert.org    print >> f, '#define', variable, value
8471869SN/A    f.close()
8481869SN/A    return None
8491869SN/A
8501869SN/A# Generate the message to be printed when building the config file.
8511869SN/Adef build_config_file_string(target, source, env):
8525863Snate@binkert.org    (variable, value) = [s.get_contents() for s in source]
8535863Snate@binkert.org    return "Defining %s as %s in %s." % (variable, value, target[0])
8541869SN/A
8551869SN/A# Combine the two functions into a scons Action object.
8561869SN/Aconfig_action = Action(build_config_file, build_config_file_string)
8571869SN/A
8581869SN/A# The emitter munges the source & target node lists to reflect what
8591869SN/A# we're really doing.
8601869SN/Adef config_emitter(target, source, env):
8615863Snate@binkert.org    # extract variable name from Builder arg
8625863Snate@binkert.org    variable = str(target[0])
8631869SN/A    # True target is config header file
8645863Snate@binkert.org    target = joinpath('config', variable.lower() + '.hh')
8655863Snate@binkert.org    val = env[variable]
8663356Sbinkertn@umich.edu    if isinstance(val, bool):
8673356Sbinkertn@umich.edu        # Force value to 0/1
8683356Sbinkertn@umich.edu        val = int(val)
8693356Sbinkertn@umich.edu    elif isinstance(val, str):
8703356Sbinkertn@umich.edu        val = '"' + val + '"'
8714781Snate@binkert.org
8725863Snate@binkert.org    # Sources are variable name & value (packaged in SCons Value nodes)
8735863Snate@binkert.org    return ([target], [Value(variable), Value(val)])
8741869SN/A
8751869SN/Aconfig_builder = Builder(emitter = config_emitter, action = config_action)
8761869SN/A
8776121Snate@binkert.orgmain.Append(BUILDERS = { 'ConfigFile' : config_builder })
8781869SN/A
8792638Sstever@eecs.umich.edu# libelf build is shared across all configs in the build root.
8806121Snate@binkert.orgmain.SConscript('ext/libelf/SConscript',
8816121Snate@binkert.org                variant_dir = joinpath(build_root, 'libelf'))
8822638Sstever@eecs.umich.edu
8835749Scws3k@cs.virginia.edu# gzstream build is shared across all configs in the build root.
8846121Snate@binkert.orgmain.SConscript('ext/gzstream/SConscript',
8856121Snate@binkert.org                variant_dir = joinpath(build_root, 'gzstream'))
8865749Scws3k@cs.virginia.edu
8871869SN/A###################################################
8881869SN/A#
8893546Sgblack@eecs.umich.edu# This function is used to set up a directory with switching headers
8903546Sgblack@eecs.umich.edu#
8913546Sgblack@eecs.umich.edu###################################################
8923546Sgblack@eecs.umich.edu
8936121Snate@binkert.orgmain['ALL_ISA_LIST'] = all_isa_list
8945863Snate@binkert.orgdef make_switching_dir(dname, switch_headers, env):
8953546Sgblack@eecs.umich.edu    # Generate the header.  target[0] is the full path of the output
8963546Sgblack@eecs.umich.edu    # header to generate.  'source' is a dummy variable, since we get the
8973546Sgblack@eecs.umich.edu    # list of ISAs from env['ALL_ISA_LIST'].
8983546Sgblack@eecs.umich.edu    def gen_switch_hdr(target, source, env):
8994781Snate@binkert.org        fname = str(target[0])
9004781Snate@binkert.org        f = open(fname, 'w')
9016658Snate@binkert.org        isa = env['TARGET_ISA'].lower()
9026658Snate@binkert.org        print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname))
9034781Snate@binkert.org        f.close()
9043546Sgblack@eecs.umich.edu
9053546Sgblack@eecs.umich.edu    # Build SCons Action object. 'varlist' specifies env vars that this
9063546Sgblack@eecs.umich.edu    # action depends on; when env['ALL_ISA_LIST'] changes these actions
9073546Sgblack@eecs.umich.edu    # should get re-executed.
9087756SAli.Saidi@ARM.com    switch_hdr_action = MakeAction(gen_switch_hdr,
9097816Ssteve.reinhardt@amd.com                          Transform("GENERATE"), varlist=['ALL_ISA_LIST'])
9103546Sgblack@eecs.umich.edu
9113546Sgblack@eecs.umich.edu    # Instantiate actions for each header
9123546Sgblack@eecs.umich.edu    for hdr in switch_headers:
9133546Sgblack@eecs.umich.edu        env.Command(hdr, [], switch_hdr_action)
9144202Sbinkertn@umich.eduExport('make_switching_dir')
9153546Sgblack@eecs.umich.edu
9163546Sgblack@eecs.umich.edu###################################################
9173546Sgblack@eecs.umich.edu#
918955SN/A# Define build environments for selected configurations.
919955SN/A#
920955SN/A###################################################
921955SN/A
9225863Snate@binkert.orgfor variant_path in variant_paths:
9235863Snate@binkert.org    print "Building in", variant_path
9245343Sstever@gmail.com
9255343Sstever@gmail.com    # Make a copy of the build-root environment to use for this config.
9266121Snate@binkert.org    env = main.Clone()
9275863Snate@binkert.org    env['BUILDDIR'] = variant_path
9284773Snate@binkert.org
9295863Snate@binkert.org    # variant_dir is the tail component of build path, and is used to
9302632Sstever@eecs.umich.edu    # determine the build parameters (e.g., 'ALPHA_SE')
9315863Snate@binkert.org    (build_root, variant_dir) = splitpath(variant_path)
9322023SN/A
9335863Snate@binkert.org    # Set env variables according to the build directory config.
9345863Snate@binkert.org    sticky_vars.files = []
9355863Snate@binkert.org    # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in
9365863Snate@binkert.org    # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke
9375863Snate@binkert.org    # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings.
9385863Snate@binkert.org    current_vars_file = joinpath(build_root, 'variables', variant_dir)
9395863Snate@binkert.org    if isfile(current_vars_file):
9405863Snate@binkert.org        sticky_vars.files.append(current_vars_file)
9415863Snate@binkert.org        print "Using saved variables file %s" % current_vars_file
9422632Sstever@eecs.umich.edu    else:
9435863Snate@binkert.org        # Build dir-specific variables file doesn't exist.
9442023SN/A
9452632Sstever@eecs.umich.edu        # Make sure the directory is there so we can create it later
9465863Snate@binkert.org        opt_dir = dirname(current_vars_file)
9475342Sstever@gmail.com        if not isdir(opt_dir):
9485863Snate@binkert.org            mkdir(opt_dir)
9492632Sstever@eecs.umich.edu
9505863Snate@binkert.org        # Get default build variables from source tree.  Variables are
9515863Snate@binkert.org        # normally determined by name of $VARIANT_DIR, but can be
9522632Sstever@eecs.umich.edu        # overriden by 'default=' arg on command line.
9535863Snate@binkert.org        default_vars_file = joinpath('build_opts',
9545863Snate@binkert.org                                     ARGUMENTS.get('default', variant_dir))
9555863Snate@binkert.org        if isfile(default_vars_file):
9565863Snate@binkert.org            sticky_vars.files.append(default_vars_file)
9575863Snate@binkert.org            print "Variables file %s not found,\n  using defaults in %s" \
9585863Snate@binkert.org                  % (current_vars_file, default_vars_file)
9592632Sstever@eecs.umich.edu        else:
9605863Snate@binkert.org            print "Error: cannot find variables file %s or %s" \
9615863Snate@binkert.org                  % (current_vars_file, default_vars_file)
9622632Sstever@eecs.umich.edu            Exit(1)
9631888SN/A
9645863Snate@binkert.org    # Apply current variable settings to env
9655863Snate@binkert.org    sticky_vars.Update(env)
9661858SN/A
9675863Snate@binkert.org    help_text += "\nSticky variables for %s:\n" % variant_dir \
9687756SAli.Saidi@ARM.com                 + sticky_vars.GenerateHelpText(env)
9692598SN/A
9705863Snate@binkert.org    # Process variable settings.
9711858SN/A
9721858SN/A    if not have_fenv and env['USE_FENV']:
9731858SN/A        print "Warning: <fenv.h> not available; " \
9745863Snate@binkert.org              "forcing USE_FENV to False in", variant_dir + "."
9751858SN/A        env['USE_FENV'] = False
9761858SN/A
9771858SN/A    if not env['USE_FENV']:
9785863Snate@binkert.org        print "Warning: No IEEE FP rounding mode control in", variant_dir + "."
9791871SN/A        print "         FP results may deviate slightly from other platforms."
9801858SN/A
9811858SN/A    if env['EFENCE']:
9821858SN/A        env.Append(LIBS=['efence'])
9831858SN/A
9841858SN/A    if env['USE_MYSQL']:
9851858SN/A        if not have_mysql:
9861858SN/A            print "Warning: MySQL not available; " \
9875863Snate@binkert.org                  "forcing USE_MYSQL to False in", variant_dir + "."
9881858SN/A            env['USE_MYSQL'] = False
9891858SN/A        else:
9905863Snate@binkert.org            print "Compiling in", variant_dir, "with MySQL support."
9911859SN/A            env.ParseConfig(mysql_config_libs)
9921859SN/A            env.ParseConfig(mysql_config_include)
9931869SN/A
9945863Snate@binkert.org    # Save sticky variable settings back to current variables file
9955863Snate@binkert.org    sticky_vars.Save(current_vars_file, env)
9961869SN/A
9971965SN/A    if env['USE_SSE2']:
9987739Sgblack@eecs.umich.edu        env.Append(CCFLAGS=['-msse2'])
9991965SN/A
10002761Sstever@eecs.umich.edu    # The src/SConscript file sets up the build rules in 'env' according
10015863Snate@binkert.org    # to the configured variables.  It returns a list of environments,
10021869SN/A    # one for each variant build (debug, opt, etc.)
10035863Snate@binkert.org    envList = SConscript('src/SConscript', variant_dir = variant_path,
10042667Sstever@eecs.umich.edu                         exports = 'env')
10051869SN/A
10061869SN/A    # Set up the regression tests for each build.
10072929Sktlim@umich.edu    for e in envList:
10082929Sktlim@umich.edu        SConscript('tests/SConscript',
10095863Snate@binkert.org                   variant_dir = joinpath(variant_path, 'tests', e.Label),
10102929Sktlim@umich.edu                   exports = { 'env' : e }, duplicate = False)
1011955SN/A
10122598SN/AHelp(help_text)
1013