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Diffstat (limited to 'SConstruct')
| -rw-r--r-- | SConstruct | 413 |
1 files changed, 413 insertions, 0 deletions
diff --git a/SConstruct b/SConstruct new file mode 100644 index 000000000..f29d10cef --- /dev/null +++ b/SConstruct @@ -0,0 +1,413 @@ +# -*- mode:python -*- + +# Copyright (c) 2004-2005 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. +# +# While in this directory ('m5'), just type 'scons' to build the default +# configuration (see below), or type 'scons build/<CONFIG>/<binary>' +# to build some other configuration (e.g., 'build/ALPHA_FS/m5.opt' for +# the optimized full-system version). +# +# You can build M5 in a different directory as long as there is a +# 'build/<CONFIG>' somewhere along the target path. The build system +# expdects that all configs under the same build directory are being +# built for the same host system. +# +# Examples: +# These two commands are equivalent. The '-u' option tells scons to +# search up the directory tree for this SConstruct file. +# % cd <path-to-src>/m5 ; scons build/ALPHA_FS/m5.debug +# % cd <path-to-src>/m5/build/ALPHA_FS; scons -u m5.debug +# These two commands are equivalent and demonstrate building in a +# directory outside of the source tree. The '-C' option tells scons +# to chdir to the specified directory to find this SConstruct file. +# % cd <path-to-src>/m5 ; scons /local/foo/build/ALPHA_FS/m5.debug +# % cd /local/foo/build/ALPHA_FS; scons -C <path-to-src>/m5 m5.debug +# +# You can use 'scons -H' to print scons options. If you're in this +# 'm5' directory (or use -u or -C to tell scons where to find this +# file), you can use 'scons -h' to print all the M5-specific build +# options as well. +# +################################################### + +# Python library imports +import sys +import os + +# Check for recent-enough Python and SCons versions +EnsurePythonVersion(2,3) +EnsureSConsVersion(0,96,91) + +# The absolute path to the current directory (where this file lives). +ROOT = Dir('.').abspath + +# Paths to the M5 and external source trees. +SRCDIR = os.path.join(ROOT, 'src') + +# tell python where to find m5 python code +sys.path.append(os.path.join(ROOT, 'src/python')) + +################################################### +# +# Figure out which configurations to set up based on the path(s) of +# the target(s). +# +################################################### + +# Find default configuration & binary. +Default(os.environ.get('M5_DEFAULT_BINARY', 'build/ALPHA_SE/m5.debug')) + +# Ask SCons which directory it was invoked from. +launch_dir = GetLaunchDir() + +# Make targets relative to invocation directory +abs_targets = map(lambda x: os.path.normpath(os.path.join(launch_dir, str(x))), + BUILD_TARGETS) + +# helper function: find last occurrence of element in list +def rfind(l, elt, offs = -1): + for i in range(len(l)+offs, 0, -1): + if l[i] == elt: + return i + raise ValueError, "element not found" + +# Each target must have 'build' in the interior of the path; the +# directory below this will determine the build parameters. For +# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we +# recognize that ALPHA_SE specifies the configuration because it +# follow 'build' in the bulid path. + +# Generate a list of the unique configs that the collected targets +# reference. +build_paths = [] +for t in abs_targets: + path_dirs = t.split('/') + try: + build_top = rfind(path_dirs, 'build', -2) + except: + print "Error: no non-leaf 'build' dir found on target path", t + Exit(1) + config_dir = os.path.join('/',*path_dirs[:build_top+2]) + if config_dir not in build_paths: + build_paths.append(config_dir) + +################################################### +# +# Set up the default build environment. This environment is copied +# and modified according to each selected configuration. +# +################################################### + +env = Environment(ENV = os.environ, # inherit user's environment vars + ROOT = ROOT, + SRCDIR = SRCDIR) + +env.SConsignFile("sconsign") + +# I waffle on this setting... it does avoid a few painful but +# unnecessary builds, but it also seems to make trivial builds take +# noticeably longer. +if False: + env.TargetSignatures('content') + +# M5_PLY is used by isa_parser.py to find the PLY package. +env.Append(ENV = { 'M5_PLY' : Dir('ext/ply') }) + +# Set up default C++ compiler flags +env.Append(CCFLAGS='-pipe') +env.Append(CCFLAGS='-fno-strict-aliasing') +env.Append(CCFLAGS=Split('-Wall -Wno-sign-compare -Werror -Wundef')) +if sys.platform == 'cygwin': + # cygwin has some header file issues... + env.Append(CCFLAGS=Split("-Wno-uninitialized")) +env.Append(CPPPATH=[Dir('ext/dnet')]) + +# Default libraries +env.Append(LIBS=['z']) + +# Platform-specific configuration +conf = Configure(env) + +# Check for <fenv.h> (C99 FP environment control) +have_fenv = conf.CheckHeader('fenv.h', '<>') +if not have_fenv: + print "Warning: Header file <fenv.h> not found." + print " This host has no IEEE FP rounding mode control." + +# Check for mysql. +mysql_config = WhereIs('mysql_config') +have_mysql = mysql_config != None + +# Check MySQL version. +if have_mysql: + mysql_version = os.popen(mysql_config + ' --version').read() + mysql_version = mysql_version.split('.') + mysql_major = int(mysql_version[0]) + mysql_minor = int(mysql_version[1]) + # This version check is probably overly conservative, but it deals + # with the versions we have installed. + if mysql_major < 4 or (mysql_major == 4 and mysql_minor < 1): + print "Warning: MySQL v4.1 or newer required." + have_mysql = False + +# Set up mysql_config commands. +if have_mysql: + mysql_config_include = mysql_config + ' --include' + if os.system(mysql_config_include + ' > /dev/null') != 0: + # older mysql_config versions don't support --include, use + # --cflags instead + mysql_config_include = mysql_config + ' --cflags | sed s/\\\'//g' + # This seems to work in all versions + mysql_config_libs = mysql_config + ' --libs' + +env = conf.Finish() + +# Define the universe of supported ISAs +env['ALL_ISA_LIST'] = ['alpha', 'sparc', 'mips'] + +# Define the universe of supported CPU models +env['ALL_CPU_LIST'] = ['AtomicSimpleCPU', 'TimingSimpleCPU', + 'FastCPU', 'FullCPU', 'AlphaFullCPU'] + +# Sticky options get saved in the options file so they persist from +# one invocation to the next (unless overridden, in which case the new +# value becomes sticky). +sticky_opts = Options(args=ARGUMENTS) +sticky_opts.AddOptions( + EnumOption('TARGET_ISA', 'Target ISA', 'alpha', env['ALL_ISA_LIST']), + BoolOption('FULL_SYSTEM', 'Full-system support', False), + # There's a bug in scons 0.96.1 that causes ListOptions with list + # values (more than one value) not to be able to be restored from + # a saved option file. If this causes trouble then upgrade to + # scons 0.96.90 or later. + ListOption('CPU_MODELS', 'CPU models', 'all', env['ALL_CPU_LIST']), + BoolOption('ALPHA_TLASER', + 'Model Alpha TurboLaser platform (vs. Tsunami)', False), + BoolOption('NO_FAST_ALLOC', 'Disable fast object allocator', False), + BoolOption('EFENCE', 'Link with Electric Fence malloc debugger', + False), + BoolOption('SS_COMPATIBLE_FP', + 'Make floating-point results compatible with SimpleScalar', + False), + BoolOption('USE_SSE2', + 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', + False), + BoolOption('STATS_BINNING', 'Bin statistics by CPU mode', have_mysql), + BoolOption('USE_MYSQL', 'Use MySQL for stats output', have_mysql), + BoolOption('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), + ('CC', 'C compiler', os.environ.get('CC', env['CC'])), + ('CXX', 'C++ compiler', os.environ.get('CXX', env['CXX'])), + BoolOption('BATCH', 'Use batch pool for build and tests', False), + ('BATCH_CMD', 'Batch pool submission command name', 'qdo') + ) + +# Non-sticky options only apply to the current build. +nonsticky_opts = Options(args=ARGUMENTS) +nonsticky_opts.AddOptions( + BoolOption('update_ref', 'Update test reference outputs', False) + ) + +# These options get exported to #defines in config/*.hh (see m5/SConscript). +env.ExportOptions = ['FULL_SYSTEM', 'ALPHA_TLASER', 'USE_FENV', \ + 'USE_MYSQL', 'NO_FAST_ALLOC', 'SS_COMPATIBLE_FP', \ + 'STATS_BINNING'] + +# Define a handy 'no-op' action +def no_action(target, source, env): + return 0 + +env.NoAction = Action(no_action, None) + +# libelf build is described in its own SConscript file. +# SConscript-global is the build in build/libelf shared among all +# configs. +env.SConscript('src/libelf/SConscript-global', exports = 'env') + +################################################### +# +# Define a SCons builder for configuration flag headers. +# +################################################### + +# This function generates a config header file that #defines the +# option symbol to the current option setting (0 or 1). The source +# operands are the name of the option and a Value node containing the +# value of the option. +def build_config_file(target, source, env): + (option, value) = [s.get_contents() for s in source] + f = file(str(target[0]), 'w') + print >> f, '#define', option, value + f.close() + return None + +# Generate the message to be printed when building the config file. +def build_config_file_string(target, source, env): + (option, value) = [s.get_contents() for s in source] + return "Defining %s as %s in %s." % (option, value, target[0]) + +# Combine the two functions into a scons Action object. +config_action = Action(build_config_file, build_config_file_string) + +# The emitter munges the source & target node lists to reflect what +# we're really doing. +def config_emitter(target, source, env): + # extract option name from Builder arg + option = str(target[0]) + # True target is config header file + target = os.path.join('config', option.lower() + '.hh') + # Force value to 0/1 even if it's a Python bool + val = int(eval(str(env[option]))) + # Sources are option name & value (packaged in SCons Value nodes) + return ([target], [Value(option), Value(val)]) + +config_builder = Builder(emitter = config_emitter, action = config_action) + +env.Append(BUILDERS = { 'ConfigFile' : config_builder }) + +################################################### +# +# Define build environments for selected configurations. +# +################################################### + +# rename base env +base_env = env + +help_text = ''' +Usage: scons [scons options] [build options] [target(s)] + +''' + +for build_path in build_paths: + print "Building in", build_path + # build_dir is the tail component of build path, and is used to + # determine the build parameters (e.g., 'ALPHA_SE') + (build_root, build_dir) = os.path.split(build_path) + # Make a copy of the default environment to use for this config. + env = base_env.Copy() + + # Set env options according to the build directory config. + sticky_opts.files = [] + # Options for $BUILD_ROOT/$BUILD_DIR are stored in + # $BUILD_ROOT/options/$BUILD_DIR so you can nuke + # $BUILD_ROOT/$BUILD_DIR without losing your options settings. + current_opts_file = os.path.join(build_root, 'options', build_dir) + if os.path.isfile(current_opts_file): + sticky_opts.files.append(current_opts_file) + print "Using saved options file %s" % current_opts_file + else: + # Build dir-specific options file doesn't exist. + + # Make sure the directory is there so we can create it later + opt_dir = os.path.dirname(current_opts_file) + if not os.path.isdir(opt_dir): + os.mkdir(opt_dir) + + # Get default build options from source tree. Options are + # normally determined by name of $BUILD_DIR, but can be + # overriden by 'default=' arg on command line. + default_opts_file = os.path.join('build_opts', + ARGUMENTS.get('default', build_dir)) + if os.path.isfile(default_opts_file): + sticky_opts.files.append(default_opts_file) + print "Options file %s not found,\n using defaults in %s" \ + % (current_opts_file, default_opts_file) + else: + print "Error: cannot find options file %s or %s" \ + % (current_opts_file, default_opts_file) + Exit(1) + + # Apply current option settings to env + sticky_opts.Update(env) + nonsticky_opts.Update(env) + + help_text += "Sticky options for %s:\n" % build_dir \ + + sticky_opts.GenerateHelpText(env) \ + + "\nNon-sticky options for %s:\n" % build_dir \ + + nonsticky_opts.GenerateHelpText(env) + + # Process option settings. + + if not have_fenv and env['USE_FENV']: + print "Warning: <fenv.h> not available; " \ + "forcing USE_FENV to False in", build_dir + "." + env['USE_FENV'] = False + + if not env['USE_FENV']: + print "Warning: No IEEE FP rounding mode control in", build_dir + "." + print " FP results may deviate slightly from other platforms." + + if env['EFENCE']: + env.Append(LIBS=['efence']) + + if env['USE_MYSQL']: + if not have_mysql: + print "Warning: MySQL not available; " \ + "forcing USE_MYSQL to False in", build_dir + "." + env['USE_MYSQL'] = False + else: + print "Compiling in", build_dir, "with MySQL support." + env.ParseConfig(mysql_config_libs) + env.ParseConfig(mysql_config_include) + + # Save sticky option settings back to current options file + sticky_opts.Save(current_opts_file, env) + + # Do this after we save setting back, or else we'll tack on an + # extra 'qdo' every time we run scons. + if env['BATCH']: + env['CC'] = env['BATCH_CMD'] + ' ' + env['CC'] + env['CXX'] = env['BATCH_CMD'] + ' ' + env['CXX'] + + if env['USE_SSE2']: + env.Append(CCFLAGS='-msse2') + + # The m5/SConscript file sets up the build rules in 'env' according + # to the configured options. It returns a list of environments, + # one for each variant build (debug, opt, etc.) + envList = SConscript('src/SConscript', build_dir = build_path, + exports = 'env', duplicate = False) + + # Set up the regression tests for each build. +# for e in envList: +# SConscript('m5-test/SConscript', +# build_dir = os.path.join(build_dir, 'test', e.Label), +# exports = { 'env' : e }, duplicate = False) + +Help(help_text) + +################################################### +# +# Let SCons do its thing. At this point SCons will use the defined +# build environments to build the requested targets. +# +################################################### + |