SConstruct revision 2667
1955SN/A# -*- mode:python -*-
2955SN/A
31762SN/A# Copyright (c) 2004-2005 The Regents of The University of Michigan
4955SN/A# All rights reserved.
5955SN/A#
6955SN/A# Redistribution and use in source and binary forms, with or without
7955SN/A# modification, are permitted provided that the following conditions are
8955SN/A# met: redistributions of source code must retain the above copyright
9955SN/A# notice, this list of conditions and the following disclaimer;
10955SN/A# redistributions in binary form must reproduce the above copyright
11955SN/A# notice, this list of conditions and the following disclaimer in the
12955SN/A# documentation and/or other materials provided with the distribution;
13955SN/A# neither the name of the copyright holders nor the names of its
14955SN/A# contributors may be used to endorse or promote products derived from
15955SN/A# this software without specific prior written permission.
16955SN/A#
17955SN/A# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18955SN/A# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19955SN/A# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20955SN/A# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21955SN/A# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22955SN/A# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23955SN/A# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24955SN/A# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25955SN/A# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26955SN/A# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27955SN/A# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
282665Ssaidi@eecs.umich.edu#
292665Ssaidi@eecs.umich.edu# Authors: Steve Reinhardt
30955SN/A
31955SN/A###################################################
32955SN/A#
33955SN/A# SCons top-level build description (SConstruct) file.
34955SN/A#
352632Sstever@eecs.umich.edu# While in this directory ('m5'), just type 'scons' to build the default
362632Sstever@eecs.umich.edu# configuration (see below), or type 'scons build/<CONFIG>/<binary>'
372632Sstever@eecs.umich.edu# to build some other configuration (e.g., 'build/ALPHA_FS/m5.opt' for
382632Sstever@eecs.umich.edu# the optimized full-system version).
39955SN/A#
402632Sstever@eecs.umich.edu# You can build M5 in a different directory as long as there is a
412632Sstever@eecs.umich.edu# 'build/<CONFIG>' somewhere along the target path.  The build system
422632Sstever@eecs.umich.edu# expdects that all configs under the same build directory are being
432632Sstever@eecs.umich.edu# built for the same host system.
442632Sstever@eecs.umich.edu#
452632Sstever@eecs.umich.edu# Examples:
462632Sstever@eecs.umich.edu#   These two commands are equivalent.  The '-u' option tells scons to
472632Sstever@eecs.umich.edu#   search up the directory tree for this SConstruct file.
482632Sstever@eecs.umich.edu#   % cd <path-to-src>/m5 ; scons build/ALPHA_FS/m5.debug
492632Sstever@eecs.umich.edu#   % cd <path-to-src>/m5/build/ALPHA_FS; scons -u m5.debug
502632Sstever@eecs.umich.edu#   These two commands are equivalent and demonstrate building in a
512632Sstever@eecs.umich.edu#   directory outside of the source tree.  The '-C' option tells scons
522632Sstever@eecs.umich.edu#   to chdir to the specified directory to find this SConstruct file.
532632Sstever@eecs.umich.edu#   % cd <path-to-src>/m5 ; scons /local/foo/build/ALPHA_FS/m5.debug
542632Sstever@eecs.umich.edu#   % cd /local/foo/build/ALPHA_FS; scons -C <path-to-src>/m5 m5.debug
552632Sstever@eecs.umich.edu#
562632Sstever@eecs.umich.edu# You can use 'scons -H' to print scons options.  If you're in this
572632Sstever@eecs.umich.edu# 'm5' directory (or use -u or -C to tell scons where to find this
582632Sstever@eecs.umich.edu# file), you can use 'scons -h' to print all the M5-specific build
592632Sstever@eecs.umich.edu# options as well.
60955SN/A#
61955SN/A###################################################
62955SN/A
63955SN/A# Python library imports
64955SN/Aimport sys
65955SN/Aimport os
66955SN/A
672656Sstever@eecs.umich.edu# Check for recent-enough Python and SCons versions.  If your system's
682656Sstever@eecs.umich.edu# default installation of Python is not recent enough, you can use a
692656Sstever@eecs.umich.edu# non-default installation of the Python interpreter by either (1)
702656Sstever@eecs.umich.edu# rearranging your PATH so that scons finds the non-default 'python'
712656Sstever@eecs.umich.edu# first or (2) explicitly invoking an alternative interpreter on the
722656Sstever@eecs.umich.edu# scons script, e.g., "/usr/local/bin/python2.4 `which scons` [args]".
732656Sstever@eecs.umich.eduEnsurePythonVersion(2,4)
742653Sstever@eecs.umich.edu
752653Sstever@eecs.umich.edu# Ironically, SCons 0.96 dies if you give EnsureSconsVersion a
762653Sstever@eecs.umich.edu# 3-element version number.
772653Sstever@eecs.umich.edumin_scons_version = (0,96,91)
782653Sstever@eecs.umich.edutry:
792653Sstever@eecs.umich.edu    EnsureSConsVersion(*min_scons_version)
802653Sstever@eecs.umich.eduexcept:
812653Sstever@eecs.umich.edu    print "Error checking current SCons version."
822653Sstever@eecs.umich.edu    print "SCons", ".".join(map(str,min_scons_version)), "or greater required."
832653Sstever@eecs.umich.edu    Exit(2)
842653Sstever@eecs.umich.edu    
851852SN/A
86955SN/A# The absolute path to the current directory (where this file lives).
87955SN/AROOT = Dir('.').abspath
88955SN/A
892632Sstever@eecs.umich.edu# Paths to the M5 and external source trees.
902632Sstever@eecs.umich.eduSRCDIR = os.path.join(ROOT, 'src')
91955SN/A
921533SN/A# tell python where to find m5 python code
932632Sstever@eecs.umich.edusys.path.append(os.path.join(ROOT, 'src/python'))
941533SN/A
95955SN/A###################################################
96955SN/A#
972632Sstever@eecs.umich.edu# Figure out which configurations to set up based on the path(s) of
982632Sstever@eecs.umich.edu# the target(s).
99955SN/A#
100955SN/A###################################################
101955SN/A
102955SN/A# Find default configuration & binary.
1032632Sstever@eecs.umich.eduDefault(os.environ.get('M5_DEFAULT_BINARY', 'build/ALPHA_SE/m5.debug'))
104955SN/A
1052632Sstever@eecs.umich.edu# Ask SCons which directory it was invoked from.
106955SN/Alaunch_dir = GetLaunchDir()
107955SN/A
1082632Sstever@eecs.umich.edu# Make targets relative to invocation directory
1092632Sstever@eecs.umich.eduabs_targets = map(lambda x: os.path.normpath(os.path.join(launch_dir, str(x))),
1102632Sstever@eecs.umich.edu                  BUILD_TARGETS)
1112632Sstever@eecs.umich.edu
1122632Sstever@eecs.umich.edu# helper function: find last occurrence of element in list
1132632Sstever@eecs.umich.edudef rfind(l, elt, offs = -1):
1142632Sstever@eecs.umich.edu    for i in range(len(l)+offs, 0, -1):
1152632Sstever@eecs.umich.edu        if l[i] == elt:
1162632Sstever@eecs.umich.edu            return i
1172632Sstever@eecs.umich.edu    raise ValueError, "element not found"
1182632Sstever@eecs.umich.edu
1192632Sstever@eecs.umich.edu# Each target must have 'build' in the interior of the path; the
1202632Sstever@eecs.umich.edu# directory below this will determine the build parameters.  For
1212632Sstever@eecs.umich.edu# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we
1222632Sstever@eecs.umich.edu# recognize that ALPHA_SE specifies the configuration because it
1232632Sstever@eecs.umich.edu# follow 'build' in the bulid path.
1242632Sstever@eecs.umich.edu
1252634Sstever@eecs.umich.edu# Generate a list of the unique build roots and configs that the
1262634Sstever@eecs.umich.edu# collected targets reference.
1272632Sstever@eecs.umich.edubuild_paths = []
1282638Sstever@eecs.umich.edubuild_root = None
1292632Sstever@eecs.umich.edufor t in abs_targets:
1302632Sstever@eecs.umich.edu    path_dirs = t.split('/')
1312632Sstever@eecs.umich.edu    try:
1322632Sstever@eecs.umich.edu        build_top = rfind(path_dirs, 'build', -2)
1332632Sstever@eecs.umich.edu    except:
1342632Sstever@eecs.umich.edu        print "Error: no non-leaf 'build' dir found on target path", t
1351858SN/A        Exit(1)
1362638Sstever@eecs.umich.edu    this_build_root = os.path.join('/',*path_dirs[:build_top+1])
1372638Sstever@eecs.umich.edu    if not build_root:
1382638Sstever@eecs.umich.edu        build_root = this_build_root
1392638Sstever@eecs.umich.edu    else:
1402638Sstever@eecs.umich.edu        if this_build_root != build_root:
1412638Sstever@eecs.umich.edu            print "Error: build targets not under same build root\n"\
1422638Sstever@eecs.umich.edu                  "  %s\n  %s" % (build_root, this_build_root)
1432638Sstever@eecs.umich.edu            Exit(1)
1442634Sstever@eecs.umich.edu    build_path = os.path.join('/',*path_dirs[:build_top+2])
1452634Sstever@eecs.umich.edu    if build_path not in build_paths:
1462634Sstever@eecs.umich.edu        build_paths.append(build_path)
147955SN/A
148955SN/A###################################################
149955SN/A#
150955SN/A# Set up the default build environment.  This environment is copied
151955SN/A# and modified according to each selected configuration.
152955SN/A#
153955SN/A###################################################
154955SN/A
1551858SN/Aenv = Environment(ENV = os.environ,  # inherit user's environment vars
1561858SN/A                  ROOT = ROOT,
1572632Sstever@eecs.umich.edu                  SRCDIR = SRCDIR)
158955SN/A
1591858SN/Aenv.SConsignFile("sconsign")
1601105SN/A
1612667Sstever@eecs.umich.edu# Default duplicate option is to use hard links, but this messes up
1622667Sstever@eecs.umich.edu# when you use emacs to edit a file in the target dir, as emacs moves
1632667Sstever@eecs.umich.edu# file to file~ then copies to file, breaking the link.  Symbolic
1642667Sstever@eecs.umich.edu# (soft) links work better.
1652667Sstever@eecs.umich.eduenv.SetOption('duplicate', 'soft-copy')
1662667Sstever@eecs.umich.edu
1671869SN/A# I waffle on this setting... it does avoid a few painful but
1681869SN/A# unnecessary builds, but it also seems to make trivial builds take
1691869SN/A# noticeably longer.
1701869SN/Aif False:
1711869SN/A    env.TargetSignatures('content')
1721065SN/A
1732632Sstever@eecs.umich.edu# M5_PLY is used by isa_parser.py to find the PLY package.
1742632Sstever@eecs.umich.eduenv.Append(ENV = { 'M5_PLY' : Dir('ext/ply') })
175955SN/A
1761858SN/A# Set up default C++ compiler flags
1771858SN/Aenv.Append(CCFLAGS='-pipe')
1781858SN/Aenv.Append(CCFLAGS='-fno-strict-aliasing')
1791858SN/Aenv.Append(CCFLAGS=Split('-Wall -Wno-sign-compare -Werror -Wundef'))
1801851SN/Aif sys.platform == 'cygwin':
1811851SN/A    # cygwin has some header file issues...
1821858SN/A    env.Append(CCFLAGS=Split("-Wno-uninitialized"))
1832632Sstever@eecs.umich.eduenv.Append(CPPPATH=[Dir('ext/dnet')])
184955SN/A
1852656Sstever@eecs.umich.edu# Find Python include and library directories for embedding the
1862656Sstever@eecs.umich.edu# interpreter.  For consistency, we will use the same Python
1872656Sstever@eecs.umich.edu# installation used to run scons (and thus this script).  If you want
1882656Sstever@eecs.umich.edu# to link in an alternate version, see above for instructions on how
1892656Sstever@eecs.umich.edu# to invoke scons with a different copy of the Python interpreter.
1902656Sstever@eecs.umich.edu
1912656Sstever@eecs.umich.edu# Get brief Python version name (e.g., "python2.4") for locating
1922656Sstever@eecs.umich.edu# include & library files
1932656Sstever@eecs.umich.edupy_version_name = 'python' + sys.version[:3]
1942656Sstever@eecs.umich.edu
1952656Sstever@eecs.umich.edu# include path, e.g. /usr/local/include/python2.4
1962656Sstever@eecs.umich.eduenv.Append(CPPPATH = os.path.join(sys.exec_prefix, 'include', py_version_name))
1972656Sstever@eecs.umich.eduenv.Append(LIBS = py_version_name)
1982656Sstever@eecs.umich.edu# add library path too if it's not in the default place
1992656Sstever@eecs.umich.eduif sys.exec_prefix != '/usr':
2002656Sstever@eecs.umich.edu    env.Append(LIBPATH = os.path.join(sys.exec_prefix, 'lib'))
2012655Sstever@eecs.umich.edu
2022667Sstever@eecs.umich.edu# Set up SWIG flags & scanner
2032667Sstever@eecs.umich.edu
2042667Sstever@eecs.umich.eduenv.Append(SWIGFLAGS=Split('-c++ -python -modern $_CPPINCFLAGS'))
2052667Sstever@eecs.umich.edu
2062667Sstever@eecs.umich.eduimport SCons.Scanner
2072667Sstever@eecs.umich.edu
2082667Sstever@eecs.umich.eduswig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")'
2092667Sstever@eecs.umich.edu
2102667Sstever@eecs.umich.eduswig_scanner = SCons.Scanner.ClassicCPP("SwigScan", ".i", "CPPPATH",
2112667Sstever@eecs.umich.edu                                        swig_inc_re)
2122667Sstever@eecs.umich.edu
2132667Sstever@eecs.umich.eduenv.Append(SCANNERS = swig_scanner)
2142667Sstever@eecs.umich.edu
2152655Sstever@eecs.umich.edu# Other default libraries
2161858SN/Aenv.Append(LIBS=['z'])
2171858SN/A
2182638Sstever@eecs.umich.edu# Platform-specific configuration.  Note again that we assume that all
2192638Sstever@eecs.umich.edu# builds under a given build root run on the same host platform.
2202638Sstever@eecs.umich.educonf = Configure(env,
2212638Sstever@eecs.umich.edu                 conf_dir = os.path.join(build_root, '.scons_config'),
2222638Sstever@eecs.umich.edu                 log_file = os.path.join(build_root, 'scons_config.log'))
2231858SN/A
2241858SN/A# Check for <fenv.h> (C99 FP environment control)
2251858SN/Ahave_fenv = conf.CheckHeader('fenv.h', '<>')
2261858SN/Aif not have_fenv:
2271858SN/A    print "Warning: Header file <fenv.h> not found."
2281858SN/A    print "         This host has no IEEE FP rounding mode control."
2291858SN/A
2301859SN/A# Check for mysql.
2311858SN/Amysql_config = WhereIs('mysql_config')
2321858SN/Ahave_mysql = mysql_config != None
2331858SN/A
2341859SN/A# Check MySQL version.
2351859SN/Aif have_mysql:
2361862SN/A    mysql_version = os.popen(mysql_config + ' --version').read()
2371862SN/A    mysql_version = mysql_version.split('.')
2381862SN/A    mysql_major = int(mysql_version[0])
2391862SN/A    mysql_minor = int(mysql_version[1])
2401859SN/A    # This version check is probably overly conservative, but it deals
2411859SN/A    # with the versions we have installed.
2421963SN/A    if mysql_major < 4 or (mysql_major == 4 and mysql_minor < 1):
2431963SN/A        print "Warning: MySQL v4.1 or newer required."
2441859SN/A        have_mysql = False
2451859SN/A
2461859SN/A# Set up mysql_config commands.
2471859SN/Aif have_mysql:
2481859SN/A    mysql_config_include = mysql_config + ' --include'
2491859SN/A    if os.system(mysql_config_include + ' > /dev/null') != 0:
2501859SN/A        # older mysql_config versions don't support --include, use
2511859SN/A        # --cflags instead
2521862SN/A        mysql_config_include = mysql_config + ' --cflags | sed s/\\\'//g'
2531859SN/A    # This seems to work in all versions
2541859SN/A    mysql_config_libs = mysql_config + ' --libs'
2551859SN/A
2561858SN/Aenv = conf.Finish()
2571858SN/A
2582139SN/A# Define the universe of supported ISAs
2592139SN/Aenv['ALL_ISA_LIST'] = ['alpha', 'sparc', 'mips']
2602139SN/A
2612155SN/A# Define the universe of supported CPU models
2622623SN/Aenv['ALL_CPU_LIST'] = ['AtomicSimpleCPU', 'TimingSimpleCPU',
2632637Sstever@eecs.umich.edu                       'FullCPU', 'AlphaFullCPU']
2642155SN/A
2651869SN/A# Sticky options get saved in the options file so they persist from
2661869SN/A# one invocation to the next (unless overridden, in which case the new
2671869SN/A# value becomes sticky).
2681869SN/Asticky_opts = Options(args=ARGUMENTS)
2691869SN/Asticky_opts.AddOptions(
2702139SN/A    EnumOption('TARGET_ISA', 'Target ISA', 'alpha', env['ALL_ISA_LIST']),
2711869SN/A    BoolOption('FULL_SYSTEM', 'Full-system support', False),
2722508SN/A    # There's a bug in scons 0.96.1 that causes ListOptions with list
2732508SN/A    # values (more than one value) not to be able to be restored from
2742508SN/A    # a saved option file.  If this causes trouble then upgrade to
2752508SN/A    # scons 0.96.90 or later.
2762635Sstever@eecs.umich.edu    ListOption('CPU_MODELS', 'CPU models', 'AtomicSimpleCPU,TimingSimpleCPU',
2772635Sstever@eecs.umich.edu               env['ALL_CPU_LIST']),
2781869SN/A    BoolOption('ALPHA_TLASER',
2791869SN/A               'Model Alpha TurboLaser platform (vs. Tsunami)', False),
2801869SN/A    BoolOption('NO_FAST_ALLOC', 'Disable fast object allocator', False),
2811869SN/A    BoolOption('EFENCE', 'Link with Electric Fence malloc debugger',
2821869SN/A               False),
2831869SN/A    BoolOption('SS_COMPATIBLE_FP',
2841869SN/A               'Make floating-point results compatible with SimpleScalar',
2851869SN/A               False),
2861965SN/A    BoolOption('USE_SSE2',
2871965SN/A               'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts',
2881965SN/A               False),
2891869SN/A    BoolOption('STATS_BINNING', 'Bin statistics by CPU mode', have_mysql),
2901869SN/A    BoolOption('USE_MYSQL', 'Use MySQL for stats output', have_mysql),
2911869SN/A    BoolOption('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv),
2921869SN/A    ('CC', 'C compiler', os.environ.get('CC', env['CC'])),
2931884SN/A    ('CXX', 'C++ compiler', os.environ.get('CXX', env['CXX'])),
2941884SN/A    BoolOption('BATCH', 'Use batch pool for build and tests', False),
2951884SN/A    ('BATCH_CMD', 'Batch pool submission command name', 'qdo')
2961869SN/A    )
2971858SN/A
2981869SN/A# Non-sticky options only apply to the current build.
2991869SN/Anonsticky_opts = Options(args=ARGUMENTS)
3001869SN/Anonsticky_opts.AddOptions(
3011869SN/A    BoolOption('update_ref', 'Update test reference outputs', False)
3021869SN/A    )
3031858SN/A
3041869SN/A# These options get exported to #defines in config/*.hh (see m5/SConscript).
3051869SN/Aenv.ExportOptions = ['FULL_SYSTEM', 'ALPHA_TLASER', 'USE_FENV', \
3061869SN/A                     'USE_MYSQL', 'NO_FAST_ALLOC', 'SS_COMPATIBLE_FP', \
3071869SN/A                     'STATS_BINNING']
3081869SN/A
3091869SN/A# Define a handy 'no-op' action
3101869SN/Adef no_action(target, source, env):
3111869SN/A    return 0
3121869SN/A
3131869SN/Aenv.NoAction = Action(no_action, None)
3141858SN/A
315955SN/A###################################################
316955SN/A#
3171869SN/A# Define a SCons builder for configuration flag headers.
3181869SN/A#
3191869SN/A###################################################
3201869SN/A
3211869SN/A# This function generates a config header file that #defines the
3221869SN/A# option symbol to the current option setting (0 or 1).  The source
3231869SN/A# operands are the name of the option and a Value node containing the
3241869SN/A# value of the option.
3251869SN/Adef build_config_file(target, source, env):
3261869SN/A    (option, value) = [s.get_contents() for s in source]
3271869SN/A    f = file(str(target[0]), 'w')
3281869SN/A    print >> f, '#define', option, value
3291869SN/A    f.close()
3301869SN/A    return None
3311869SN/A
3321869SN/A# Generate the message to be printed when building the config file.
3331869SN/Adef build_config_file_string(target, source, env):
3341869SN/A    (option, value) = [s.get_contents() for s in source]
3351869SN/A    return "Defining %s as %s in %s." % (option, value, target[0])
3361869SN/A
3371869SN/A# Combine the two functions into a scons Action object.
3381869SN/Aconfig_action = Action(build_config_file, build_config_file_string)
3391869SN/A
3401869SN/A# The emitter munges the source & target node lists to reflect what
3411869SN/A# we're really doing.
3421869SN/Adef config_emitter(target, source, env):
3431869SN/A    # extract option name from Builder arg
3441869SN/A    option = str(target[0])
3451869SN/A    # True target is config header file
3461869SN/A    target = os.path.join('config', option.lower() + '.hh')
3471869SN/A    # Force value to 0/1 even if it's a Python bool
3481869SN/A    val = int(eval(str(env[option])))
3491869SN/A    # Sources are option name & value (packaged in SCons Value nodes)
3501869SN/A    return ([target], [Value(option), Value(val)])
3511869SN/A
3521869SN/Aconfig_builder = Builder(emitter = config_emitter, action = config_action)
3531869SN/A
3541869SN/Aenv.Append(BUILDERS = { 'ConfigFile' : config_builder })
3551869SN/A
3562655Sstever@eecs.umich.edu###################################################
3572655Sstever@eecs.umich.edu#
3582655Sstever@eecs.umich.edu# Define a SCons builder for copying files.  This is used by the
3592655Sstever@eecs.umich.edu# Python zipfile code in src/python/SConscript, but is placed up here
3602655Sstever@eecs.umich.edu# since it's potentially more generally applicable.
3612655Sstever@eecs.umich.edu#
3622655Sstever@eecs.umich.edu###################################################
3632655Sstever@eecs.umich.edu
3642655Sstever@eecs.umich.educopy_builder = Builder(action = Copy("$TARGET", "$SOURCE"))
3652655Sstever@eecs.umich.edu
3662655Sstever@eecs.umich.eduenv.Append(BUILDERS = { 'CopyFile' : copy_builder })
3672655Sstever@eecs.umich.edu
3682655Sstever@eecs.umich.edu###################################################
3692655Sstever@eecs.umich.edu#
3702655Sstever@eecs.umich.edu# Define a simple SCons builder to concatenate files.
3712655Sstever@eecs.umich.edu#
3722655Sstever@eecs.umich.edu# Used to append the Python zip archive to the executable.
3732655Sstever@eecs.umich.edu#
3742655Sstever@eecs.umich.edu###################################################
3752655Sstever@eecs.umich.edu
3762655Sstever@eecs.umich.educoncat_builder = Builder(action = Action(['cat $SOURCES > $TARGET',
3772655Sstever@eecs.umich.edu                                          'chmod +x $TARGET']))
3782655Sstever@eecs.umich.edu
3792655Sstever@eecs.umich.eduenv.Append(BUILDERS = { 'Concat' : concat_builder })
3802655Sstever@eecs.umich.edu
3812655Sstever@eecs.umich.edu
3822634Sstever@eecs.umich.edu# base help text
3832634Sstever@eecs.umich.eduhelp_text = '''
3842634Sstever@eecs.umich.eduUsage: scons [scons options] [build options] [target(s)]
3852634Sstever@eecs.umich.edu
3862634Sstever@eecs.umich.edu'''
3872634Sstever@eecs.umich.edu
3882638Sstever@eecs.umich.edu# libelf build is shared across all configs in the build root.
3892638Sstever@eecs.umich.eduenv.SConscript('ext/libelf/SConscript',
3902638Sstever@eecs.umich.edu               build_dir = os.path.join(build_root, 'libelf'),
3912638Sstever@eecs.umich.edu               exports = 'env')
3922638Sstever@eecs.umich.edu
3931869SN/A###################################################
3941869SN/A#
395955SN/A# Define build environments for selected configurations.
396955SN/A#
397955SN/A###################################################
398955SN/A
3991858SN/A# rename base env
4001858SN/Abase_env = env
4011858SN/A
4022632Sstever@eecs.umich.edufor build_path in build_paths:
4032632Sstever@eecs.umich.edu    print "Building in", build_path
4042632Sstever@eecs.umich.edu    # build_dir is the tail component of build path, and is used to
4052632Sstever@eecs.umich.edu    # determine the build parameters (e.g., 'ALPHA_SE')
4062632Sstever@eecs.umich.edu    (build_root, build_dir) = os.path.split(build_path)
4072634Sstever@eecs.umich.edu    # Make a copy of the build-root environment to use for this config.
4082638Sstever@eecs.umich.edu    env = base_env.Copy()
4092023SN/A
4102632Sstever@eecs.umich.edu    # Set env options according to the build directory config.
4112632Sstever@eecs.umich.edu    sticky_opts.files = []
4122632Sstever@eecs.umich.edu    # Options for $BUILD_ROOT/$BUILD_DIR are stored in
4132632Sstever@eecs.umich.edu    # $BUILD_ROOT/options/$BUILD_DIR so you can nuke
4142632Sstever@eecs.umich.edu    # $BUILD_ROOT/$BUILD_DIR without losing your options settings.
4152632Sstever@eecs.umich.edu    current_opts_file = os.path.join(build_root, 'options', build_dir)
4162632Sstever@eecs.umich.edu    if os.path.isfile(current_opts_file):
4172632Sstever@eecs.umich.edu        sticky_opts.files.append(current_opts_file)
4182632Sstever@eecs.umich.edu        print "Using saved options file %s" % current_opts_file
4192632Sstever@eecs.umich.edu    else:
4202632Sstever@eecs.umich.edu        # Build dir-specific options file doesn't exist.
4212023SN/A
4222632Sstever@eecs.umich.edu        # Make sure the directory is there so we can create it later
4232632Sstever@eecs.umich.edu        opt_dir = os.path.dirname(current_opts_file)
4241889SN/A        if not os.path.isdir(opt_dir):
4251889SN/A            os.mkdir(opt_dir)
4262632Sstever@eecs.umich.edu
4272632Sstever@eecs.umich.edu        # Get default build options from source tree.  Options are
4282632Sstever@eecs.umich.edu        # normally determined by name of $BUILD_DIR, but can be
4292632Sstever@eecs.umich.edu        # overriden by 'default=' arg on command line.
4302632Sstever@eecs.umich.edu        default_opts_file = os.path.join('build_opts',
4312632Sstever@eecs.umich.edu                                         ARGUMENTS.get('default', build_dir))
4322632Sstever@eecs.umich.edu        if os.path.isfile(default_opts_file):
4332632Sstever@eecs.umich.edu            sticky_opts.files.append(default_opts_file)
4342632Sstever@eecs.umich.edu            print "Options file %s not found,\n  using defaults in %s" \
4352632Sstever@eecs.umich.edu                  % (current_opts_file, default_opts_file)
4362632Sstever@eecs.umich.edu        else:
4372632Sstever@eecs.umich.edu            print "Error: cannot find options file %s or %s" \
4382632Sstever@eecs.umich.edu                  % (current_opts_file, default_opts_file)
4392632Sstever@eecs.umich.edu            Exit(1)
4401888SN/A
4411888SN/A    # Apply current option settings to env
4421869SN/A    sticky_opts.Update(env)
4431869SN/A    nonsticky_opts.Update(env)
4441858SN/A
4452598SN/A    help_text += "Sticky options for %s:\n" % build_dir \
4462598SN/A                 + sticky_opts.GenerateHelpText(env) \
4472598SN/A                 + "\nNon-sticky options for %s:\n" % build_dir \
4482598SN/A                 + nonsticky_opts.GenerateHelpText(env)
4492598SN/A
4501858SN/A    # Process option settings.
4511858SN/A
4521858SN/A    if not have_fenv and env['USE_FENV']:
4531858SN/A        print "Warning: <fenv.h> not available; " \
4541858SN/A              "forcing USE_FENV to False in", build_dir + "."
4551858SN/A        env['USE_FENV'] = False
4561858SN/A
4571858SN/A    if not env['USE_FENV']:
4581858SN/A        print "Warning: No IEEE FP rounding mode control in", build_dir + "."
4591871SN/A        print "         FP results may deviate slightly from other platforms."
4601858SN/A
4611858SN/A    if env['EFENCE']:
4621858SN/A        env.Append(LIBS=['efence'])
4631858SN/A
4641858SN/A    if env['USE_MYSQL']:
4651858SN/A        if not have_mysql:
4661858SN/A            print "Warning: MySQL not available; " \
4671858SN/A                  "forcing USE_MYSQL to False in", build_dir + "."
4681858SN/A            env['USE_MYSQL'] = False
4691858SN/A        else:
4701858SN/A            print "Compiling in", build_dir, "with MySQL support."
4711859SN/A            env.ParseConfig(mysql_config_libs)
4721859SN/A            env.ParseConfig(mysql_config_include)
4731869SN/A
4741888SN/A    # Save sticky option settings back to current options file
4752632Sstever@eecs.umich.edu    sticky_opts.Save(current_opts_file, env)
4761869SN/A
4771884SN/A    # Do this after we save setting back, or else we'll tack on an
4781884SN/A    # extra 'qdo' every time we run scons.
4791884SN/A    if env['BATCH']:
4801884SN/A        env['CC']  = env['BATCH_CMD'] + ' ' + env['CC']
4811884SN/A        env['CXX'] = env['BATCH_CMD'] + ' ' + env['CXX']
4821884SN/A
4831965SN/A    if env['USE_SSE2']:
4841965SN/A        env.Append(CCFLAGS='-msse2')
4851965SN/A
486955SN/A    # The m5/SConscript file sets up the build rules in 'env' according
4871869SN/A    # to the configured options.  It returns a list of environments,
4881869SN/A    # one for each variant build (debug, opt, etc.)
4892632Sstever@eecs.umich.edu    envList = SConscript('src/SConscript', build_dir = build_path,
4902667Sstever@eecs.umich.edu                         exports = 'env')
4911869SN/A
4921869SN/A    # Set up the regression tests for each build.
4932632Sstever@eecs.umich.edu#    for e in envList:
4942632Sstever@eecs.umich.edu#        SConscript('m5-test/SConscript',
4952632Sstever@eecs.umich.edu#                   build_dir = os.path.join(build_dir, 'test', e.Label),
4962632Sstever@eecs.umich.edu#                   exports = { 'env' : e }, duplicate = False)
497955SN/A
4982598SN/AHelp(help_text)
4992598SN/A
500955SN/A###################################################
501955SN/A#
502955SN/A# Let SCons do its thing.  At this point SCons will use the defined
5031530SN/A# build environments to build the requested targets.
504955SN/A#
505955SN/A###################################################
506955SN/A
507