diff options
| -rw-r--r-- | SConscript | 384 | ||||
| -rw-r--r-- | base/traceflags.py | 11 | ||||
| -rw-r--r-- | build/SConstruct | 282 |
3 files changed, 675 insertions, 2 deletions
diff --git a/SConscript b/SConscript new file mode 100644 index 000000000..7d8d9f50e --- /dev/null +++ b/SConscript @@ -0,0 +1,384 @@ +# -*- mode:python -*- + +# Copyright (c) 2004 The Regents of The University of Michigan +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer; +# redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution; +# neither the name of the copyright holders nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +import os +import sys + +# This file defines how to build a particular configuration of M5 +# based on variable settings in the 'env' build environment. + +# Import build environment variable from SConstruct. +Import('env') + +################################################### +# +# Define needed sources. +# +################################################### + +# Base sources used by all configurations. +base_sources = Split(''' + arch/alpha/decoder.cc + arch/alpha/fast_cpu_exec.cc + arch/alpha/simple_cpu_exec.cc + arch/alpha/full_cpu_exec.cc + arch/alpha/faults.cc + arch/alpha/isa_traits.cc + + base/circlebuf.cc + base/copyright.cc + base/cprintf.cc + base/fast_alloc.cc + base/fifo_buffer.cc + base/hostinfo.cc + base/hybrid_pred.cc + base/inifile.cc + base/intmath.cc + base/misc.cc + base/pollevent.cc + base/python.cc + base/range.cc + base/sat_counter.cc + base/socket.cc + base/statistics.cc + base/str.cc + base/time.cc + base/trace.cc + base/traceflags.cc + base/userinfo.cc + base/compression/lzss_compression.cc + base/loader/aout_object.cc + base/loader/ecoff_object.cc + base/loader/elf_object.cc + base/loader/object_file.cc + base/loader/symtab.cc + base/stats/events.cc + base/stats/python.cc + base/stats/statdb.cc + base/stats/visit.cc + base/stats/text.cc + + cpu/base_cpu.cc + cpu/exec_context.cc + cpu/exetrace.cc + cpu/pc_event.cc + cpu/static_inst.cc + cpu/fast_cpu/fast_cpu.cc + cpu/full_cpu/bpred.cc + cpu/full_cpu/commit.cc + cpu/full_cpu/create_vector.cc + cpu/full_cpu/cv_spec_state.cc + cpu/full_cpu/dd_queue.cc + cpu/full_cpu/dep_link.cc + cpu/full_cpu/dispatch.cc + cpu/full_cpu/dyn_inst.cc + cpu/full_cpu/execute.cc + cpu/full_cpu/fetch.cc + cpu/full_cpu/floss_reasons.cc + cpu/full_cpu/fu_pool.cc + cpu/full_cpu/full_cpu.cc + cpu/full_cpu/inst_fifo.cc + cpu/full_cpu/instpipe.cc + cpu/full_cpu/issue.cc + cpu/full_cpu/ls_queue.cc + cpu/full_cpu/machine_queue.cc + cpu/full_cpu/pipetrace.cc + cpu/full_cpu/readyq.cc + cpu/full_cpu/reg_info.cc + cpu/full_cpu/rob_station.cc + cpu/full_cpu/spec_memory.cc + cpu/full_cpu/spec_state.cc + cpu/full_cpu/storebuffer.cc + cpu/full_cpu/writeback.cc + cpu/full_cpu/iq/iq_station.cc + cpu/full_cpu/iq/iqueue.cc + cpu/full_cpu/iq/segmented/chain_info.cc + cpu/full_cpu/iq/segmented/chain_wire.cc + cpu/full_cpu/iq/segmented/iq_seg.cc + cpu/full_cpu/iq/segmented/iq_segmented.cc + cpu/full_cpu/iq/segmented/seg_chain.cc + cpu/full_cpu/iq/seznec/iq_seznec.cc + cpu/full_cpu/iq/standard/iq_standard.cc + cpu/sampling_cpu/sampling_cpu.cc + cpu/simple_cpu/simple_cpu.cc + cpu/trace/reader/mem_trace_reader.cc + cpu/trace/reader/ibm_reader.cc + cpu/trace/reader/itx_reader.cc + cpu/trace/reader/m5_reader.cc + + mem/base_hier.cc + mem/base_mem.cc + mem/hier_params.cc + mem/mem_cmd.cc + mem/mem_debug.cc + mem/mem_req.cc + mem/memory_interface.cc + mem/bus/base_interface.cc + mem/bus/bus.cc + mem/bus/bus_bridge.cc + mem/bus/bus_bridge_master.cc + mem/bus/bus_bridge_slave.cc + mem/bus/bus_interface.cc + mem/bus/dma_bus_interface.cc + mem/bus/dma_interface.cc + mem/bus/master_interface.cc + mem/bus/slave_interface.cc + mem/cache/base_cache.cc + mem/cache/cache.cc + mem/cache/cache_builder.cc + mem/cache/coherence/coherence_protocol.cc + mem/cache/coherence/uni_coherence.cc + mem/cache/miss/blocking_buffer.cc + mem/cache/miss/miss_queue.cc + mem/cache/miss/mshr.cc + mem/cache/miss/mshr_queue.cc + mem/cache/tags/base_tags.cc + mem/cache/tags/cache_tags.cc + mem/cache/tags/fa_lru.cc + mem/cache/tags/iic.cc + mem/cache/tags/lru.cc + mem/cache/tags/repl/gen.cc + mem/cache/tags/repl/repl.cc + mem/functional_mem/functional_memory.cc + mem/functional_mem/main_memory.cc + mem/timing_mem/base_memory.cc + mem/timing_mem/memory_builder.cc + mem/timing_mem/simple_mem_bank.cc + mem/trace/mem_trace_writer.cc + mem/trace/m5_writer.cc + + sim/builder.cc + sim/configfile.cc + sim/debug.cc + sim/eventq.cc + sim/main.cc + sim/param.cc + sim/profile.cc + sim/serialize.cc + sim/sim_events.cc + sim/sim_exit.cc + sim/sim_init.cc + sim/sim_object.cc + sim/stat_context.cc + sim/stat_control.cc + sim/sw_context.cc + sim/trace_context.cc + sim/universe.cc + ''') + +# MySql sources +mysql_sources = Split(''' + base/mysql.cc + base/stats/mysql.cc + ''') + +# Full-system sources +full_system_sources = Split(''' + arch/alpha/alpha_memory.cc + arch/alpha/arguments.cc + arch/alpha/ev5.cc + arch/alpha/osfpal.cc + arch/alpha/pseudo_inst.cc + arch/alpha/vtophys.cc + + base/inet.cc + base/remote_gdb.cc + + cpu/intr_control.cc + + dev/alpha_console.cc + dev/baddev.cc + dev/simconsole.cc + dev/disk_image.cc + dev/dma.cc + dev/etherdump.cc + dev/etherint.cc + dev/etherlink.cc + dev/etherpkt.cc + dev/ethertap.cc + dev/ide_ctrl.cc + dev/ide_disk.cc + dev/io_device.cc + dev/ns_gige.cc + dev/etherdev.cc + dev/pciconfigall.cc + dev/pcidev.cc + dev/scsi.cc + dev/scsi_ctrl.cc + dev/scsi_disk.cc + dev/scsi_none.cc + dev/simple_disk.cc + dev/tlaser_clock.cc + dev/tlaser_ipi.cc + dev/tlaser_mbox.cc + dev/tlaser_mc146818.cc + dev/tlaser_node.cc + dev/tlaser_pcia.cc + dev/tlaser_pcidev.cc + dev/tlaser_serial.cc + dev/turbolaser.cc + dev/tsunami.cc + dev/tsunami_cchip.cc + dev/tsunami_fake.cc + dev/tsunami_io.cc + dev/tsunami_pchip.cc + dev/uart.cc + + kern/kernel_stats.cc + kern/system_events.cc + kern/linux/linux_events.cc + kern/linux/linux_syscalls.cc + kern/linux/linux_system.cc + kern/tru64/dump_mbuf.cc + kern/tru64/printf.cc + kern/tru64/tru64_events.cc + kern/tru64/tru64_syscalls.cc + kern/tru64/tru64_system.cc + + mem/functional_mem/memory_control.cc + mem/functional_mem/physical_memory.cc + dev/platform.cc + + sim/system.cc + ''') + +# Syscall emulation (non-full-system) sources +syscall_emulation_sources = Split(''' + arch/alpha/alpha_common_syscall_emul.cc + arch/alpha/alpha_linux_process.cc + arch/alpha/alpha_tru64_process.cc + cpu/memtest/memtest.cc + cpu/trace/trace_cpu.cc + eio/eio.cc + eio/exolex.cc + eio/libexo.cc + sim/process.cc + sim/syscall_emul.cc + ''') + +# Set up complete list of sources based on configuration. +sources = base_sources + +if env['FULL_SYSTEM']: + sources += full_system_sources +else: + sources += syscall_emulation_sources + +if env['USE_MYSQL']: + sources += mysql_sources + +################################################### +# +# Special build rules. +# +################################################### + +# base/traceflags.{cc,hh} are generated from base/traceflags.py. +# $TARGET.base will expand to "<build-dir>/base/traceflags". +env.Command(Split('base/traceflags.hh base/traceflags.cc'), + 'base/traceflags.py', + 'python $SOURCE $TARGET.base') + +# several files are generated from arch/$TARGET_ISA/isa_desc. +env.Command(Split('''arch/alpha/decoder.cc + arch/alpha/decoder.hh + arch/alpha/fast_cpu_exec.cc + arch/alpha/simple_cpu_exec.cc + arch/alpha/full_cpu_exec.cc'''), + 'arch/alpha/isa_desc', + '$SRCDIR/arch/isa_parser.py $SOURCE $TARGET.dir arch/alpha') + + +# 'targetarch' is a symlink to arch/$TARGET_ISA. +def link_targetarch(target, source, env): + link_target = str(target[0]) + link_source = env.subst('$SRCDIR/arch/$TARGET_ISA') + if not os.path.isdir(link_target): + print "symlinking", link_source, "to", link_target + try: + os.symlink(link_source, link_target) + except OSError, desc: + print "Error creating symlink %s: %s" % (link_target, desc) + sys.exit(-1) + +# Tell SCons to use the link_targetarch function to make 'targetarch' +env.Command('targetarch', None, link_targetarch) + + +# This function adds the specified sources to the given build +# environment, and returns a list of all the corresponding SCons +# Object nodes (including an extra one for date.cc). We explicitly +# add the Object nodes so we can set up special dependencies for +# targetarch and date.cc. +def make_objs(sources, env): + objs = [env.Object(s) for s in sources] + # make all objects depend on the targetarch link so it gets made first. + env.Depends(objs, 'targetarch') + # make date.cc depend on all other objects so it always gets + # recompiled whenever anything else does + date_obj = env.Object('base/date.cc') + env.Depends(date_obj, objs) + objs.append(date_obj) + return objs + +################################################### +# +# Define binaries. Each different build type (debug, opt, etc.) gets +# a slightly different build environment. +# +################################################### + +# Include file paths are rooted in this directory. SCons will +# automatically expand '.' to refer to both the source directory and +# the corresponding build directory to pick up generated include +# files. +env.Append(CPPPATH='.') + +# Debug binary +debug = env.Copy(OBJSUFFIX='.do') +debug.Append(CCFLAGS=Split('-g -gstabs+ -O0')) +debug.Append(CPPDEFINES='DEBUG') +debug.Program(target = 'm5.debug', source = make_objs(sources, debug)) + +# Optimized binary +opt = env.Copy() +opt.Append(CCFLAGS=Split('-g -O5')) +opt.Program(target = 'm5.opt', source = make_objs(sources, opt)) + +# "Fast" binary +fast = env.Copy(OBJSUFFIX='.fo') +fast.Append(CCFLAGS=Split('-O5')) +fast.Append(CPPDEFINES='NDEBUG') +fast.Program(target = 'm5.fast.unstripped', source = make_objs(sources, fast)) +fast.Command(target = 'm5.fast', source = 'm5.fast.unstripped', + action = 'strip $SOURCE -o $TARGET') + +# Profiled binary +prof = env.Copy(OBJSUFFIX='.po') +prof.Append(CCFLAGS=Split('-O5 -g -pg'), LINKFLAGS='-pg') +prof.Program(target = 'm5.prof', source = make_objs(sources, prof)) diff --git a/base/traceflags.py b/base/traceflags.py index 363d44ffb..8e1594b24 100644 --- a/base/traceflags.py +++ b/base/traceflags.py @@ -30,8 +30,15 @@ # This file generates the header and source files for the flags # that control the tracing facility. # -hhfilename="traceflags.hh" -ccfilename="traceflags.cc" + +import sys + +if len(sys.argv) != 2: + print "%s: Need argument (basename of cc/hh files)" % sys.argv[0] + sys.exit(1) + +hhfilename = sys.argv[1] + '.hh' +ccfilename = sys.argv[1] + '.cc' # # The list of trace flags that can be used to condition DPRINTFs etc. diff --git a/build/SConstruct b/build/SConstruct new file mode 100644 index 000000000..d6d723c95 --- /dev/null +++ b/build/SConstruct @@ -0,0 +1,282 @@ +# -*- mode:python -*- + +# Copyright (c) 2004 The Regents of The University of Michigan +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer; +# redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution; +# neither the name of the copyright holders nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +################################################### +# +# SCons top-level build description (SConstruct) file. +# +# To build M5, you need a directory with three things: +# 1. A copy of this file (named SConstruct). +# 2. A link named 'm5' to the top of the M5 simulator source tree. +# 3. A link named 'ext' to the top of the M5 external source tree. +# +# Then type 'scons' to build the default configuration (see below), or +# 'scons <CONFIG>/<binary>' to build some other configuration (e.g., +# 'KERNEL/m5.opt' for the optimized full-system version). +# +################################################### + +# Python library imports +import sys +import os + +# The absolute path to the current directory (where this file lives). +ROOT = Dir('.').abspath + +# Paths to the M5 and external source trees (local symlinks). +SRCDIR = os.path.join(ROOT, 'm5') +EXT_SRCDIR = os.path.join(ROOT, 'ext') + +# Check for 'm5' and 'ext' links, die if they don't exist. +if not os.path.isdir(SRCDIR): + print "Error: '%s' must be a link to the M5 source tree." % SRCDIR + sys.exit(1) + +if not os.path.isdir('ext'): + print "Error: '%s' must be a link to the M5 external source tree." \ + % EXT_SRCDIR + sys.exit(1) + + +################################################### +# +# Define Configurations +# +# The build system infers the build options from the subdirectory name +# that the simulator is built under. The subdirectory name must be of +# the form <CONFIG>[.<OPT>]*, where <CONFIG> is a base configuration +# (e.g., ALPHA or KERNEL) and OPT is an option (e.g., MYSQL). The +# following code defines the standard configurations and options. +# Additional local configurations and options are read from the file +# 'local_configs' if it exists. +# +# Each base configuration or option is defined in two steps: a +# function that takes an SCons build environment and modifies it +# appropriately for that config or option, and an entry in the +# 'configs_map' or 'options_map' dictionary that maps the directory +# name string to the function. (The directory names are all upper +# case, by convention.) +# +################################################### + +# Base non-full-system Alpha ISA configuration. +def AlphaConfig(env): + env.Replace(TARGET_ISA = 'alpha') + env.Append(CPPDEFINES = 'SS_COMPATIBLE_FP') + +# Base full-system configuration. +def KernelConfig(env): + env.Replace(TARGET_ISA = 'alpha') + env.Replace(FULL_SYSTEM = True) + env.Append(CPPDEFINES = ['FULL_SYSTEM', 'SYSTEM_EV5']) + +# Base configurations map. +configs_map = { + 'ALPHA' : AlphaConfig, + 'KERNEL' : KernelConfig + } + +# Enable detailed full-system binning. +def MeasureOpt(env): + env.Replace(USE_MYSQL = True) + env.Append(CPPDEFINES = 'FS_MEASURE') + +# Enable MySql database output for stats. +def MySqlOpt(env): + env.Replace(USE_MYSQL = True) + +# Disable FastAlloc object allocation. +def NoFastAllocOpt(env): + env.Append(CPPDEFINES = 'NO_FAST_ALLOC') + +# Configuration options map. +options_map = { + 'MEASURE' : MeasureOpt, + 'MYSQL' : MySqlOpt, + 'NO_FAST_ALLOC' : NoFastAllocOpt + } + +# The 'local_configs' file can be used to define additional base +# configurations and/or options without changing this file. +if os.path.isfile('local_configs'): + SConscript('local_configs', exports = ['configs_map', 'options_map']) + +# This function parses a directory name of the form <CONFIG>[.<OPT>]* +# and sets up the build environment appropriately. Returns True if +# successful, False if the base config or any of the options were not +# defined. +def set_dir_options(dir, env): + parts = dir.split('.') + config = parts[0] + opts = parts[1:] + try: + configs_map[config](env) + map(lambda opt: options_map[opt](env), opts) + return True + except KeyError, key: + print "Config/option '%s' not found." % key + return False + +# Set the default configuration and binary. The default target (if +# scons is invoked at the top level with no command-line targets) is +# 'ALPHA/m5.debug'. If scons is invoked in a subdirectory with no +# command-line targets, the configuration + +################################################### +# +# Figure out which configurations to set up. +# +# +# It's prohibitive to do all the combinations of base configurations +# and options, so we have to infer which ones the user wants. +# +# 1. If there are command-line targets, the configuration(s) are inferred +# from the directories of those targets. If scons was invoked from a +# subdirectory (using 'scons -u'), those targets have to be +# interpreted relative to that subdirectory. +# +# 2. If there are no command-line targets, and scons was invoked from a +# subdirectory (using 'scons -u'), the configuration is inferred from +# the name of the subdirectory. +# +# 3. If there are no command-line targets and scons was invoked from +# the root build directory, a default configuration is used. The +# built-in default is ALPHA, but this can be overridden by setting the +# M5_DEFAULT_CONFIG shell environment veriable. +# +# In cases 2 & 3, the specific file target defaults to 'm5.debug', but +# this can be overridden by setting the M5_DEFAULT_BINARY shell +# environment veriable. +# +################################################### + +# Find default configuration & binary. +default_config = os.environ.get('M5_DEFAULT_CONFIG', 'ALPHA') +default_binary = os.environ.get('M5_DEFAULT_BINARY', 'm5.debug') + +# Ask SCons which directory it was invoked from. If you invoke SCons +# from a subdirectory you must use the '-u' flag. +launch_dir = GetLaunchDir() + +# Build a list 'my_targets' of all the targets relative to ROOT. +if launch_dir == ROOT: + # invoked from root build dir + if len(COMMAND_LINE_TARGETS) != 0: + # easy: use specified targets as is + my_targets = COMMAND_LINE_TARGETS + else: + # default target (ALPHA/m5.debug, unless overridden) + target = os.path.join(default_config, default_binary) + my_targets = [target] + Default(target) +else: + # invoked from subdirectory + if not launch_dir.startswith(ROOT): + print "Error: launch dir (%s) not a subdirectory of ROOT (%s)!" \ + (launch_dir, ROOT) + sys.exit(1) + # make launch_dir relative to ROOT (strip ROOT plus slash off front) + launch_dir = launch_dir[len(ROOT)+1:] + if len(COMMAND_LINE_TARGETS) != 0: + # make specified targets relative to ROOT + my_targets = map(lambda x: os.path.join(launch_dir, x), + COMMAND_LINE_TARGETS) + else: + # build default binary (m5.debug, unless overridden) using the + # config inferred by the invocation directory (the first + # subdirectory after ROOT) + target = os.path.join(launch_dir.split('/')[0], default_binary) + my_targets = [target] + Default(target) + +# Normalize target paths (gets rid of '..' in the middle, etc.) +my_targets = map(os.path.normpath, my_targets) + +# Generate a list of the unique configs that the collected targets reference. +build_dirs = [] +for t in my_targets: + dir = t.split('/')[0] + if dir not in build_dirs: + build_dirs.append(dir) + +################################################### +# +# Set up the default build environment. This environment is copied +# and modified according to each selected configuration. +# +################################################### + +default_env = Environment(ENV = os.environ, # inherit user's enviroment vars + ROOT = ROOT, + SRCDIR = SRCDIR, + EXT_SRCDIR = EXT_SRCDIR, + CPPDEFINES = [], + FULL_SYSTEM = False, + USE_MYSQL = False) + +# M5_EXT is used by isa_parser.py to find the PLY package. +default_env.Append(ENV = { 'M5_EXT' : EXT_SRCDIR }) + +default_env.Append(CCFLAGS='-pipe') +default_env.Append(CCFLAGS='-fno-strict-aliasing') +default_env.Append(CCFLAGS=Split('-Wall -Wno-sign-compare -Werror -Wundef')) + +# libelf build is described in its own SConscript file. Using a +# dictionary for exports lets us export "default_env" so the +# SConscript will see it as "env". +default_env.SConscript('m5/libelf/SConscript', exports={'env' : default_env}) + + +################################################### +# +# Define build environments for selected configurations. +# +################################################### + +for build_dir in build_dirs: + # Make a copy of the default environment to use for this config. + env = default_env.Copy() + # Modify 'env' according to the build directory config. + print "Configuring options for directory '%s'." % build_dir + if not set_dir_options(build_dir, env): + print "Skipping directory '%s'." % build_dir + continue + + # The m5/SConscript file sets up the build rules in 'env' according + # to the configured options. + SConscript('m5/SConscript', build_dir = build_dir, exports = 'env', + duplicate=0) + + +################################################### +# +# Let SCons do its thing. At this point SCons will use the defined +# build enviornments to build the requested targets. +# +################################################### + |