320 lines
12 KiB
Python
320 lines
12 KiB
Python
# -*- mode:python -*-
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# Copyright (c) 2004-2005 The Regents of The University of Michigan
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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###################################################
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#
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# SCons top-level build description (SConstruct) file.
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#
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# To build M5, you need a directory with three things:
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# 1. A copy of this file (named SConstruct).
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# 2. A link named 'm5' to the top of the M5 simulator source tree.
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# 3. A link named 'ext' to the top of the M5 external source tree.
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#
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# Then type 'scons' to build the default configuration (see below), or
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# 'scons <CONFIG>/<binary>' to build some other configuration (e.g.,
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# 'ALPHA_FS/m5.opt' for the optimized full-system version).
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#
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###################################################
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# Python library imports
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import sys
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import os
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# Check for recent-enough Python and SCons versions
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EnsurePythonVersion(2,3)
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EnsureSConsVersion(0,96)
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# The absolute path to the current directory (where this file lives).
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ROOT = Dir('.').abspath
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# Paths to the M5 and external source trees (local symlinks).
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SRCDIR = os.path.join(ROOT, 'm5')
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EXT_SRCDIR = os.path.join(ROOT, 'ext')
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# Check for 'm5' and 'ext' links, die if they don't exist.
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if not os.path.isdir(SRCDIR):
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print "Error: '%s' must be a link to the M5 source tree." % SRCDIR
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Exit(1)
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if not os.path.isdir('ext'):
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print "Error: '%s' must be a link to the M5 external source tree." \
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% EXT_SRCDIR
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Exit(1)
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# tell python where to find m5 python code
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sys.path.append(os.path.join(SRCDIR, 'python'))
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###################################################
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#
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# Figure out which configurations to set up.
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#
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#
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# It's prohibitive to do all the combinations of base configurations
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# and options, so we have to infer which ones the user wants.
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#
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# 1. If there are command-line targets, the configuration(s) are inferred
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# from the directories of those targets. If scons was invoked from a
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# subdirectory (using 'scons -u'), those targets have to be
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# interpreted relative to that subdirectory.
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#
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# 2. If there are no command-line targets, and scons was invoked from a
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# subdirectory (using 'scons -u'), the configuration is inferred from
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# the name of the subdirectory.
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#
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# 3. If there are no command-line targets and scons was invoked from
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# the root build directory, a default configuration is used. The
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# built-in default is ALPHA_SE, but this can be overridden by setting the
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# M5_DEFAULT_CONFIG shell environment veriable.
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#
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# In cases 2 & 3, the specific file target defaults to 'm5.debug', but
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# this can be overridden by setting the M5_DEFAULT_BINARY shell
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# environment veriable.
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#
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###################################################
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# Find default configuration & binary.
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default_config = os.environ.get('M5_DEFAULT_CONFIG', 'ALPHA_SE')
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default_binary = os.environ.get('M5_DEFAULT_BINARY', 'm5.debug')
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# Ask SCons which directory it was invoked from. If you invoke SCons
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# from a subdirectory you must use the '-u' flag.
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launch_dir = GetLaunchDir()
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# Build a list 'my_targets' of all the targets relative to ROOT.
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if launch_dir == ROOT:
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# invoked from root build dir
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if len(COMMAND_LINE_TARGETS) != 0:
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# easy: use specified targets as is
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my_targets = COMMAND_LINE_TARGETS
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else:
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# default target (ALPHA_SE/m5.debug, unless overridden)
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target = os.path.join(default_config, default_binary)
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my_targets = [target]
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Default(target)
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else:
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# invoked from subdirectory
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if not launch_dir.startswith(ROOT):
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print "Error: launch dir (%s) not a subdirectory of ROOT (%s)!" \
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(launch_dir, ROOT)
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Exit(1)
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# make launch_dir relative to ROOT (strip ROOT plus slash off front)
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launch_dir = launch_dir[len(ROOT)+1:]
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if len(COMMAND_LINE_TARGETS) != 0:
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# make specified targets relative to ROOT
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my_targets = map(lambda x: os.path.join(launch_dir, x),
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COMMAND_LINE_TARGETS)
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else:
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# build default binary (m5.debug, unless overridden) using the
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# config inferred by the invocation directory (the first
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# subdirectory after ROOT)
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target = os.path.join(launch_dir.split('/')[0], default_binary)
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my_targets = [target]
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Default(target)
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# Normalize target paths (gets rid of '..' in the middle, etc.)
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my_targets = map(os.path.normpath, my_targets)
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# Generate a list of the unique configs that the collected targets reference.
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build_dirs = []
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for t in my_targets:
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dir = t.split('/')[0]
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if dir not in build_dirs:
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build_dirs.append(dir)
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###################################################
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#
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# Set up the default build environment. This environment is copied
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# and modified according to each selected configuration.
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#
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###################################################
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env = Environment(ENV = os.environ, # inherit user's environment vars
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ROOT = ROOT,
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SRCDIR = SRCDIR,
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EXT_SRCDIR = EXT_SRCDIR)
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env.SConsignFile("sconsign")
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if os.environ.has_key('CC'):
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env.Replace(CC=os.environ['CC'])
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if os.environ.has_key('CXX'):
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env.Replace(CXX=os.environ['CXX'])
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# M5_EXT is used by isa_parser.py to find the PLY package.
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env.Append(ENV = { 'M5_EXT' : EXT_SRCDIR })
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# Set up default C++ compiler flags
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env.Append(CCFLAGS='-pipe')
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env.Append(CCFLAGS='-fno-strict-aliasing')
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env.Append(CCFLAGS=Split('-Wall -Wno-sign-compare -Werror -Wundef'))
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if sys.platform == 'cygwin':
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# cygwin has some header file issues...
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env.Append(CCFLAGS=Split("-Wno-uninitialized"))
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env.Append(CPPPATH=[os.path.join(EXT_SRCDIR + '/dnet')])
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# Default libraries
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env.Append(LIBS=['z'])
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# Platform-specific configuration
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conf = Configure(env)
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# Check for <fenv.h> (C99 FP environment control)
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have_fenv = conf.CheckHeader('fenv.h', '<>')
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if not have_fenv:
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print "Warning: Header file <fenv.h> not found."
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print " This host has no IEEE FP rounding mode control."
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# Check for mysql.
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mysql_config = WhereIs('mysql_config')
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have_mysql = mysql_config != None
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# Check MySQL version.
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if have_mysql:
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mysql_version = os.popen(mysql_config + ' --version').read()
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mysql_version = mysql_version.split('.')
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mysql_major = int(mysql_version[0])
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mysql_minor = int(mysql_version[1])
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# This version check is probably overly conservative, but it deals
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# with the versions we have installed.
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if mysql_major < 3 or \
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mysql_major == 3 and mysql_minor < 23 or \
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mysql_major == 4 and mysql_minor < 1:
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print "Warning: MySQL v3.23 or v4.1 or newer required."
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have_mysql = False
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# Set up mysql_config commands.
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if have_mysql:
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mysql_config_include = mysql_config + ' --include'
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if os.system(mysql_config_include + ' > /dev/null') != 0:
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# older mysql_config versions don't support --include, use
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# --cflags instead
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mysql_config_include = mysql_config + ' --cflags | sed s/\\\'//g'
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# This seems to work in all versions
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mysql_config_libs = mysql_config + ' --libs'
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env = conf.Finish()
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# The source operand is a Value node containing the value of the option.
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def build_config_file(target, source, env, option):
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f = file(str(target[0]), 'w')
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print >> f, '#define', option, int(eval(str(source[0])))
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f.close()
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return None
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def config_builder(env, option):
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target = os.path.join('config', option.lower() + '.hh')
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source = Value(env[option])
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def my_build_config_file(target, source, env):
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build_config_file(target, source, env, option)
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env.Command(target, source, my_build_config_file)
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env.Append(BUILDERS = { 'ConfigFile' : config_builder })
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# libelf build is described in its own SConscript file.
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# SConscript-global is the build in build/libelf shared among all
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# configs.
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env.SConscript('m5/libelf/SConscript-global', exports = 'env')
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###################################################
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#
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# Define build environments for selected configurations.
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#
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###################################################
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# rename base env
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base_env = env
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for build_dir in build_dirs:
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# Make a copy of the default environment to use for this config.
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env = base_env.Copy()
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# Set env according to the build directory config.
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options_file = os.path.join('build_options', build_dir)
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if not os.path.isfile(options_file):
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print "Options file %s not found, using defaults." % options_file
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opts = Options(options_file, ARGUMENTS)
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opts.AddOptions(
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EnumOption('TARGET_ISA', 'Target ISA', 'alpha', ('alpha')),
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BoolOption('FULL_SYSTEM', 'Full-system support', False),
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BoolOption('ALPHA_TLASER',
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'Model Alpha TurboLaser platform (vs. Tsunami)', False),
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BoolOption('NO_FAST_ALLOC', 'Disable fast object allocator', False),
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BoolOption('EFENCE', 'Link with Electric Fence malloc debugger',
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False),
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BoolOption('SS_COMPATIBLE_FP',
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'Make floating-point results compatible with SimpleScalar',
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False),
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BoolOption('STATS_BINNING', 'Bin statistics by CPU mode', have_mysql),
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BoolOption('USE_MYSQL', 'Use MySQL for stats output', have_mysql),
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BoolOption('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv)
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)
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opts.Update(env)
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opts.Save(options_file, env)
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env.ExportOptions = ['FULL_SYSTEM', 'ALPHA_TLASER', 'USE_FENV', \
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'USE_MYSQL', 'NO_FAST_ALLOC', 'SS_COMPATIBLE_FP', \
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'STATS_BINNING']
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# Process option settings.
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if not have_fenv and env['USE_FENV']:
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print "Warning: <fenv.h> not available; " \
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"forcing USE_FENV to False in", build_dir + "."
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env['USE_FENV'] = False
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if not env['USE_FENV']:
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print "Warning: No IEEE FP rounding mode control in", build_dir + "."
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print " FP results may deviate slightly", \
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"and some regression tests may fail."
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if env['EFENCE']:
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env.Append(LIBS=['efence'])
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if env['USE_MYSQL']:
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if not have_mysql:
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print "Warning: MySQL not available; " \
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"forcing USE_MYSQL to False in", build_dir + "."
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env['USE_MYSQL'] = False
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else:
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print "Compiling in", build_dir, "with MySQL support."
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env.ParseConfig(mysql_config_libs)
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env.ParseConfig(mysql_config_include)
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# The m5/SConscript file sets up the build rules in 'env' according
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# to the configured options.
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SConscript('m5/SConscript', build_dir = build_dir, exports = 'env',
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duplicate=0)
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###################################################
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#
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# Let SCons do its thing. At this point SCons will use the defined
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# build environments to build the requested targets.
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#
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###################################################
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