de904a6d39
The arguments were added to the global_sticky_vars Variables object after the basic help text was generated. As a result, the "actual:" value wouldn't reflect the arguments to scons and wouldn't really be the "actual" value used by the build. This change fixes that by updating global_sticky_vars slightly earlier.
864 lines
31 KiB
Python
864 lines
31 KiB
Python
# -*- mode:python -*-
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# Copyright (c) 2009 The Hewlett-Packard Development Company
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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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# Authors: Steve Reinhardt
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# Nathan Binkert
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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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# While in this directory ('m5'), just type 'scons' to build the default
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# configuration (see below), or type 'scons build/<CONFIG>/<binary>'
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# to build some other configuration (e.g., 'build/ALPHA_FS/m5.opt' for
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# the optimized full-system version).
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#
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# You can build M5 in a different directory as long as there is a
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# 'build/<CONFIG>' somewhere along the target path. The build system
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# expects that all configs under the same build directory are being
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# built for the same host system.
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#
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# Examples:
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#
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# The following two commands are equivalent. The '-u' option tells
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# scons to search up the directory tree for this SConstruct file.
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# % cd <path-to-src>/m5 ; scons build/ALPHA_FS/m5.debug
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# % cd <path-to-src>/m5/build/ALPHA_FS; scons -u m5.debug
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#
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# The following two commands are equivalent and demonstrate building
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# in a directory outside of the source tree. The '-C' option tells
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# scons to chdir to the specified directory to find this SConstruct
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# file.
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# % cd <path-to-src>/m5 ; scons /local/foo/build/ALPHA_FS/m5.debug
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# % cd /local/foo/build/ALPHA_FS; scons -C <path-to-src>/m5 m5.debug
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#
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# You can use 'scons -H' to print scons options. If you're in this
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# 'm5' directory (or use -u or -C to tell scons where to find this
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# file), you can use 'scons -h' to print all the M5-specific build
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# options as well.
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#
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###################################################
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# Check for recent-enough Python and SCons versions.
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try:
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# Really old versions of scons only take two options for the
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# function, so check once without the revision and once with the
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# revision, the first instance will fail for stuff other than
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# 0.98, and the second will fail for 0.98.0
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EnsureSConsVersion(0, 98)
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EnsureSConsVersion(0, 98, 1)
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except SystemExit, e:
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print """
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For more details, see:
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http://m5sim.org/wiki/index.php/Compiling_M5
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"""
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raise
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# We ensure the python version early because we have stuff that
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# requires python 2.4
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try:
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EnsurePythonVersion(2, 4)
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except SystemExit, e:
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print """
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You can use a non-default installation of the Python interpreter by
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either (1) rearranging your PATH so that scons finds the non-default
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'python' first or (2) explicitly invoking an alternative interpreter
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on the scons script.
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For more details, see:
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http://m5sim.org/wiki/index.php/Using_a_non-default_Python_installation
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"""
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raise
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# Global Python includes
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import os
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import re
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import subprocess
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import sys
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from os import mkdir, environ
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from os.path import abspath, basename, dirname, expanduser, normpath
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from os.path import exists, isdir, isfile
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from os.path import join as joinpath, split as splitpath
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# SCons includes
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import SCons
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import SCons.Node
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extra_python_paths = [
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Dir('src/python').srcnode().abspath, # M5 includes
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Dir('ext/ply').srcnode().abspath, # ply is used by several files
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]
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sys.path[1:1] = extra_python_paths
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from m5.util import compareVersions, readCommand
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########################################################################
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#
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# Set up the main build environment.
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#
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########################################################################
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use_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 'PATH',
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'PYTHONPATH', 'RANLIB' ])
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use_env = {}
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for key,val in os.environ.iteritems():
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if key in use_vars or key.startswith("M5"):
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use_env[key] = val
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main = Environment(ENV=use_env)
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main.root = Dir(".") # The current directory (where this file lives).
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main.srcdir = Dir("src") # The source directory
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# add useful python code PYTHONPATH so it can be used by subprocesses
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# as well
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main.AppendENVPath('PYTHONPATH', extra_python_paths)
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########################################################################
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#
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# Mercurial Stuff.
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#
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# If the M5 directory is a mercurial repository, we should do some
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# extra things.
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#
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########################################################################
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hgdir = main.root.Dir(".hg")
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mercurial_style_message = """
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You're missing the M5 style hook.
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Please install the hook so we can ensure that all code fits a common style.
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All you'd need to do is add the following lines to your repository .hg/hgrc
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or your personal .hgrc
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----------------
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[extensions]
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style = %s/util/style.py
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[hooks]
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pretxncommit.style = python:style.check_whitespace
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""" % (main.root)
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mercurial_bin_not_found = """
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Mercurial binary cannot be found, unfortunately this means that we
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cannot easily determine the version of M5 that you are running and
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this makes error messages more difficult to collect. Please consider
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installing mercurial if you choose to post an error message
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"""
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mercurial_lib_not_found = """
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Mercurial libraries cannot be found, ignoring style hook
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If you are actually a M5 developer, please fix this and
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run the style hook. It is important.
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"""
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hg_info = "Unknown"
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if hgdir.exists():
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# 1) Grab repository revision if we know it.
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cmd = "hg id -n -i -t -b"
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try:
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hg_info = readCommand(cmd, cwd=main.root.abspath).strip()
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except OSError:
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print mercurial_bin_not_found
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# 2) Ensure that the style hook is in place.
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try:
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ui = None
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if ARGUMENTS.get('IGNORE_STYLE') != 'True':
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from mercurial import ui
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ui = ui.ui()
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except ImportError:
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print mercurial_lib_not_found
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if ui is not None:
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ui.readconfig(hgdir.File('hgrc').abspath)
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style_hook = ui.config('hooks', 'pretxncommit.style', None)
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if not style_hook:
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print mercurial_style_message
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sys.exit(1)
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else:
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print ".hg directory not found"
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main['HG_INFO'] = hg_info
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###################################################
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#
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# Figure out which configurations to set up based on the path(s) of
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# the target(s).
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#
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###################################################
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# Find default configuration & binary.
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Default(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA_SE/m5.debug'))
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# helper function: find last occurrence of element in list
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def rfind(l, elt, offs = -1):
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for i in range(len(l)+offs, 0, -1):
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if l[i] == elt:
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return i
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raise ValueError, "element not found"
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# Each target must have 'build' in the interior of the path; the
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# directory below this will determine the build parameters. For
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# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we
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# recognize that ALPHA_SE specifies the configuration because it
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# follow 'build' in the bulid path.
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# Generate absolute paths to targets so we can see where the build dir is
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if COMMAND_LINE_TARGETS:
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# Ask SCons which directory it was invoked from
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launch_dir = GetLaunchDir()
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# Make targets relative to invocation directory
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abs_targets = [ normpath(joinpath(launch_dir, str(x))) for x in \
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COMMAND_LINE_TARGETS]
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else:
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# Default targets are relative to root of tree
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abs_targets = [ normpath(joinpath(main.root.abspath, str(x))) for x in \
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DEFAULT_TARGETS]
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# Generate a list of the unique build roots and configs that the
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# collected targets reference.
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variant_paths = []
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build_root = None
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for t in abs_targets:
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path_dirs = t.split('/')
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try:
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build_top = rfind(path_dirs, 'build', -2)
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except:
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print "Error: no non-leaf 'build' dir found on target path", t
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Exit(1)
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this_build_root = joinpath('/',*path_dirs[:build_top+1])
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if not build_root:
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build_root = this_build_root
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else:
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if this_build_root != build_root:
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print "Error: build targets not under same build root\n"\
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" %s\n %s" % (build_root, this_build_root)
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Exit(1)
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variant_path = joinpath('/',*path_dirs[:build_top+2])
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if variant_path not in variant_paths:
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variant_paths.append(variant_path)
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# Make sure build_root exists (might not if this is the first build there)
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if not isdir(build_root):
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mkdir(build_root)
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Export('main')
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main.SConsignFile(joinpath(build_root, "sconsign"))
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# Default duplicate option is to use hard links, but this messes up
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# when you use emacs to edit a file in the target dir, as emacs moves
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# file to file~ then copies to file, breaking the link. Symbolic
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# (soft) links work better.
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main.SetOption('duplicate', 'soft-copy')
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#
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# Set up global sticky variables... these are common to an entire build
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# tree (not specific to a particular build like ALPHA_SE)
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#
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# Variable validators & converters for global sticky variables
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def PathListMakeAbsolute(val):
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if not val:
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return val
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f = lambda p: abspath(expanduser(p))
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return ':'.join(map(f, val.split(':')))
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def PathListAllExist(key, val, env):
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if not val:
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return
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paths = val.split(':')
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for path in paths:
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if not isdir(path):
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raise SCons.Errors.UserError("Path does not exist: '%s'" % path)
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global_sticky_vars_file = joinpath(build_root, 'variables.global')
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global_sticky_vars = Variables(global_sticky_vars_file, args=ARGUMENTS)
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global_sticky_vars.AddVariables(
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('CC', 'C compiler', environ.get('CC', main['CC'])),
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('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])),
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('BATCH', 'Use batch pool for build and tests', False),
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('BATCH_CMD', 'Batch pool submission command name', 'qdo'),
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('EXTRAS', 'Add Extra directories to the compilation', '',
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PathListAllExist, PathListMakeAbsolute),
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BoolVariable('RUBY', 'Build with Ruby', False),
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)
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# base help text
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help_text = '''
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Usage: scons [scons options] [build options] [target(s)]
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Global sticky options:
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'''
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# Update main environment with values from ARGUMENTS & global_sticky_vars_file
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global_sticky_vars.Update(main)
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help_text += global_sticky_vars.GenerateHelpText(main)
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# Save sticky variable settings back to current variables file
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global_sticky_vars.Save(global_sticky_vars_file, main)
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# Parse EXTRAS variable to build list of all directories where we're
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# look for sources etc. This list is exported as base_dir_list.
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base_dir = main.srcdir.abspath
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if main['EXTRAS']:
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extras_dir_list = main['EXTRAS'].split(':')
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else:
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extras_dir_list = []
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Export('base_dir')
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Export('extras_dir_list')
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# the ext directory should be on the #includes path
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main.Append(CPPPATH=[Dir('ext')])
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CXX_version = readCommand([main['CXX'],'--version'], exception=False)
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CXX_V = readCommand([main['CXX'],'-V'], exception=False)
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main['GCC'] = CXX_version and CXX_version.find('g++') >= 0
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main['SUNCC'] = CXX_V and CXX_V.find('Sun C++') >= 0
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main['ICC'] = CXX_V and CXX_V.find('Intel') >= 0
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if main['GCC'] + main['SUNCC'] + main['ICC'] > 1:
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print 'Error: How can we have two at the same time?'
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Exit(1)
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# Set up default C++ compiler flags
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if main['GCC']:
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main.Append(CCFLAGS='-pipe')
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main.Append(CCFLAGS='-fno-strict-aliasing')
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main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef'])
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main.Append(CXXFLAGS='-Wno-deprecated')
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elif main['ICC']:
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pass #Fix me... add warning flags once we clean up icc warnings
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elif main['SUNCC']:
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main.Append(CCFLAGS='-Qoption ccfe')
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main.Append(CCFLAGS='-features=gcc')
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main.Append(CCFLAGS='-features=extensions')
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main.Append(CCFLAGS='-library=stlport4')
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main.Append(CCFLAGS='-xar')
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#main.Append(CCFLAGS='-instances=semiexplicit')
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else:
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print 'Error: Don\'t know what compiler options to use for your compiler.'
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print ' Please fix SConstruct and src/SConscript and try again.'
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Exit(1)
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# Set up common yacc/bison flags (needed for Ruby)
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main['YACCFLAGS'] = '-d'
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main['YACCHXXFILESUFFIX'] = '.hh'
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# Do this after we save setting back, or else we'll tack on an
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# extra 'qdo' every time we run scons.
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if main['BATCH']:
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main['CC'] = main['BATCH_CMD'] + ' ' + main['CC']
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main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX']
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main['AS'] = main['BATCH_CMD'] + ' ' + main['AS']
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main['AR'] = main['BATCH_CMD'] + ' ' + main['AR']
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main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB']
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if sys.platform == 'cygwin':
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# cygwin has some header file issues...
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main.Append(CCFLAGS="-Wno-uninitialized")
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# Check for SWIG
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if not main.has_key('SWIG'):
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print 'Error: SWIG utility not found.'
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print ' Please install (see http://www.swig.org) and retry.'
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Exit(1)
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# Check for appropriate SWIG version
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swig_version = readCommand(('swig', '-version'), exception='').split()
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# First 3 words should be "SWIG Version x.y.z"
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if len(swig_version) < 3 or \
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swig_version[0] != 'SWIG' or swig_version[1] != 'Version':
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print 'Error determining SWIG version.'
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Exit(1)
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min_swig_version = '1.3.28'
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if compareVersions(swig_version[2], min_swig_version) < 0:
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print 'Error: SWIG version', min_swig_version, 'or newer required.'
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print ' Installed version:', swig_version[2]
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Exit(1)
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# Set up SWIG flags & scanner
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swig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS')
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main.Append(SWIGFLAGS=swig_flags)
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# filter out all existing swig scanners, they mess up the dependency
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# stuff for some reason
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scanners = []
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for scanner in main['SCANNERS']:
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skeys = scanner.skeys
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if skeys == '.i':
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continue
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if isinstance(skeys, (list, tuple)) and '.i' in skeys:
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continue
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scanners.append(scanner)
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# add the new swig scanner that we like better
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from SCons.Scanner import ClassicCPP as CPPScanner
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swig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")'
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scanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re))
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# replace the scanners list that has what we want
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main['SCANNERS'] = scanners
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# Add a custom Check function to the Configure context so that we can
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# figure out if the compiler adds leading underscores to global
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# variables. This is needed for the autogenerated asm files that we
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# use for embedding the python code.
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def CheckLeading(context):
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context.Message("Checking for leading underscore in global variables...")
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# 1) Define a global variable called x from asm so the C compiler
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# won't change the symbol at all.
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# 2) Declare that variable.
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# 3) Use the variable
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#
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# If the compiler prepends an underscore, this will successfully
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# link because the external symbol 'x' will be called '_x' which
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# was defined by the asm statement. If the compiler does not
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# prepend an underscore, this will not successfully link because
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# '_x' will have been defined by assembly, while the C portion of
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# the code will be trying to use 'x'
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ret = context.TryLink('''
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asm(".globl _x; _x: .byte 0");
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extern int x;
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int main() { return x; }
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''', extension=".c")
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context.env.Append(LEADING_UNDERSCORE=ret)
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context.Result(ret)
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return ret
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# Platform-specific configuration. Note again that we assume that all
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# builds under a given build root run on the same host platform.
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conf = Configure(main,
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conf_dir = joinpath(build_root, '.scons_config'),
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log_file = joinpath(build_root, 'scons_config.log'),
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custom_tests = { 'CheckLeading' : CheckLeading })
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# Check for leading underscores. Don't really need to worry either
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|
# way so don't need to check the return code.
|
|
conf.CheckLeading()
|
|
|
|
# Check if we should compile a 64 bit binary on Mac OS X/Darwin
|
|
try:
|
|
import platform
|
|
uname = platform.uname()
|
|
if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0:
|
|
if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]):
|
|
main.Append(CCFLAGS='-arch x86_64')
|
|
main.Append(CFLAGS='-arch x86_64')
|
|
main.Append(LINKFLAGS='-arch x86_64')
|
|
main.Append(ASFLAGS='-arch x86_64')
|
|
except:
|
|
pass
|
|
|
|
# Recent versions of scons substitute a "Null" object for Configure()
|
|
# when configuration isn't necessary, e.g., if the "--help" option is
|
|
# present. Unfortuantely this Null object always returns false,
|
|
# breaking all our configuration checks. We replace it with our own
|
|
# more optimistic null object that returns True instead.
|
|
if not conf:
|
|
def NullCheck(*args, **kwargs):
|
|
return True
|
|
|
|
class NullConf:
|
|
def __init__(self, env):
|
|
self.env = env
|
|
def Finish(self):
|
|
return self.env
|
|
def __getattr__(self, mname):
|
|
return NullCheck
|
|
|
|
conf = NullConf(main)
|
|
|
|
# Find Python include and library directories for embedding the
|
|
# interpreter. For consistency, we will use the same Python
|
|
# installation used to run scons (and thus this script). If you want
|
|
# to link in an alternate version, see above for instructions on how
|
|
# to invoke scons with a different copy of the Python interpreter.
|
|
from distutils import sysconfig
|
|
|
|
py_getvar = sysconfig.get_config_var
|
|
|
|
py_version = 'python' + py_getvar('VERSION')
|
|
|
|
py_general_include = sysconfig.get_python_inc()
|
|
py_platform_include = sysconfig.get_python_inc(plat_specific=True)
|
|
py_includes = [ py_general_include ]
|
|
if py_platform_include != py_general_include:
|
|
py_includes.append(py_platform_include)
|
|
|
|
py_lib_path = [ py_getvar('LIBDIR') ]
|
|
# add the prefix/lib/pythonX.Y/config dir, but only if there is no
|
|
# shared library in prefix/lib/.
|
|
if not py_getvar('Py_ENABLE_SHARED'):
|
|
py_lib_path.append(py_getvar('LIBPL'))
|
|
|
|
py_libs = []
|
|
for lib in py_getvar('LIBS').split() + py_getvar('SYSLIBS').split():
|
|
assert lib.startswith('-l')
|
|
lib = lib[2:]
|
|
if lib not in py_libs:
|
|
py_libs.append(lib)
|
|
py_libs.append(py_version)
|
|
|
|
main.Append(CPPPATH=py_includes)
|
|
main.Append(LIBPATH=py_lib_path)
|
|
|
|
# verify that this stuff works
|
|
if not conf.CheckHeader('Python.h', '<>'):
|
|
print "Error: can't find Python.h header in", py_includes
|
|
Exit(1)
|
|
|
|
for lib in py_libs:
|
|
if not conf.CheckLib(lib):
|
|
print "Error: can't find library %s required by python" % lib
|
|
Exit(1)
|
|
|
|
# On Solaris you need to use libsocket for socket ops
|
|
if not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'):
|
|
if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'):
|
|
print "Can't find library with socket calls (e.g. accept())"
|
|
Exit(1)
|
|
|
|
# Check for zlib. If the check passes, libz will be automatically
|
|
# added to the LIBS environment variable.
|
|
if not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'):
|
|
print 'Error: did not find needed zlib compression library '\
|
|
'and/or zlib.h header file.'
|
|
print ' Please install zlib and try again.'
|
|
Exit(1)
|
|
|
|
# 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 = bool(mysql_config)
|
|
|
|
# Check MySQL version.
|
|
if have_mysql:
|
|
mysql_version = readCommand(mysql_config + ' --version')
|
|
min_mysql_version = '4.1'
|
|
if compareVersions(mysql_version, min_mysql_version) < 0:
|
|
print 'Warning: MySQL', min_mysql_version, 'or newer required.'
|
|
print ' Version', mysql_version, 'detected.'
|
|
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'
|
|
|
|
######################################################################
|
|
#
|
|
# Finish the configuration
|
|
#
|
|
main = conf.Finish()
|
|
|
|
######################################################################
|
|
#
|
|
# Collect all non-global variables
|
|
#
|
|
|
|
# Define the universe of supported ISAs
|
|
all_isa_list = [ ]
|
|
Export('all_isa_list')
|
|
|
|
# Define the universe of supported CPU models
|
|
all_cpu_list = [ ]
|
|
default_cpus = [ ]
|
|
Export('all_cpu_list', 'default_cpus')
|
|
|
|
# Sticky variables get saved in the variables file so they persist from
|
|
# one invocation to the next (unless overridden, in which case the new
|
|
# value becomes sticky).
|
|
sticky_vars = Variables(args=ARGUMENTS)
|
|
Export('sticky_vars')
|
|
|
|
# Sticky variables that should be exported
|
|
export_vars = []
|
|
Export('export_vars')
|
|
|
|
# Non-sticky variables only apply to the current build.
|
|
nonsticky_vars = Variables(args=ARGUMENTS)
|
|
Export('nonsticky_vars')
|
|
|
|
# Walk the tree and execute all SConsopts scripts that wil add to the
|
|
# above variables
|
|
for bdir in [ base_dir ] + extras_dir_list:
|
|
for root, dirs, files in os.walk(bdir):
|
|
if 'SConsopts' in files:
|
|
print "Reading", joinpath(root, 'SConsopts')
|
|
SConscript(joinpath(root, 'SConsopts'))
|
|
|
|
all_isa_list.sort()
|
|
all_cpu_list.sort()
|
|
default_cpus.sort()
|
|
|
|
sticky_vars.AddVariables(
|
|
EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list),
|
|
BoolVariable('FULL_SYSTEM', 'Full-system support', False),
|
|
ListVariable('CPU_MODELS', 'CPU models', default_cpus, all_cpu_list),
|
|
BoolVariable('NO_FAST_ALLOC', 'Disable fast object allocator', False),
|
|
BoolVariable('FAST_ALLOC_DEBUG', 'Enable fast object allocator debugging',
|
|
False),
|
|
BoolVariable('FAST_ALLOC_STATS', 'Enable fast object allocator statistics',
|
|
False),
|
|
BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger',
|
|
False),
|
|
BoolVariable('SS_COMPATIBLE_FP',
|
|
'Make floating-point results compatible with SimpleScalar',
|
|
False),
|
|
BoolVariable('USE_SSE2',
|
|
'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts',
|
|
False),
|
|
BoolVariable('USE_MYSQL', 'Use MySQL for stats output', have_mysql),
|
|
BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv),
|
|
BoolVariable('USE_CHECKER', 'Use checker for detailed CPU models', False),
|
|
BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False),
|
|
)
|
|
|
|
nonsticky_vars.AddVariables(
|
|
BoolVariable('update_ref', 'Update test reference outputs', False)
|
|
)
|
|
|
|
# These variables get exported to #defines in config/*.hh (see src/SConscript).
|
|
export_vars += ['FULL_SYSTEM', 'USE_FENV', 'USE_MYSQL',
|
|
'NO_FAST_ALLOC', 'FAST_ALLOC_DEBUG', 'FAST_ALLOC_STATS',
|
|
'SS_COMPATIBLE_FP', 'USE_CHECKER', 'TARGET_ISA', 'CP_ANNOTATE']
|
|
|
|
###################################################
|
|
#
|
|
# Define a SCons builder for configuration flag headers.
|
|
#
|
|
###################################################
|
|
|
|
# This function generates a config header file that #defines the
|
|
# variable symbol to the current variable setting (0 or 1). The source
|
|
# operands are the name of the variable and a Value node containing the
|
|
# value of the variable.
|
|
def build_config_file(target, source, env):
|
|
(variable, value) = [s.get_contents() for s in source]
|
|
f = file(str(target[0]), 'w')
|
|
print >> f, '#define', variable, value
|
|
f.close()
|
|
return None
|
|
|
|
# Generate the message to be printed when building the config file.
|
|
def build_config_file_string(target, source, env):
|
|
(variable, value) = [s.get_contents() for s in source]
|
|
return "Defining %s as %s in %s." % (variable, 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 variable name from Builder arg
|
|
variable = str(target[0])
|
|
# True target is config header file
|
|
target = joinpath('config', variable.lower() + '.hh')
|
|
val = env[variable]
|
|
if isinstance(val, bool):
|
|
# Force value to 0/1
|
|
val = int(val)
|
|
elif isinstance(val, str):
|
|
val = '"' + val + '"'
|
|
|
|
# Sources are variable name & value (packaged in SCons Value nodes)
|
|
return ([target], [Value(variable), Value(val)])
|
|
|
|
config_builder = Builder(emitter = config_emitter, action = config_action)
|
|
|
|
main.Append(BUILDERS = { 'ConfigFile' : config_builder })
|
|
|
|
# libelf build is shared across all configs in the build root.
|
|
main.SConscript('ext/libelf/SConscript',
|
|
variant_dir = joinpath(build_root, 'libelf'))
|
|
|
|
# gzstream build is shared across all configs in the build root.
|
|
main.SConscript('ext/gzstream/SConscript',
|
|
variant_dir = joinpath(build_root, 'gzstream'))
|
|
|
|
###################################################
|
|
#
|
|
# This function is used to set up a directory with switching headers
|
|
#
|
|
###################################################
|
|
|
|
main['ALL_ISA_LIST'] = all_isa_list
|
|
def make_switching_dir(dname, switch_headers, env):
|
|
# Generate the header. target[0] is the full path of the output
|
|
# header to generate. 'source' is a dummy variable, since we get the
|
|
# list of ISAs from env['ALL_ISA_LIST'].
|
|
def gen_switch_hdr(target, source, env):
|
|
fname = str(target[0])
|
|
f = open(fname, 'w')
|
|
isa = env['TARGET_ISA'].lower()
|
|
print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname))
|
|
f.close()
|
|
|
|
# String to print when generating header
|
|
def gen_switch_hdr_string(target, source, env):
|
|
return "Generating switch header " + str(target[0])
|
|
|
|
# Build SCons Action object. 'varlist' specifies env vars that this
|
|
# action depends on; when env['ALL_ISA_LIST'] changes these actions
|
|
# should get re-executed.
|
|
switch_hdr_action = Action(gen_switch_hdr, gen_switch_hdr_string,
|
|
varlist=['ALL_ISA_LIST'])
|
|
|
|
# Instantiate actions for each header
|
|
for hdr in switch_headers:
|
|
env.Command(hdr, [], switch_hdr_action)
|
|
Export('make_switching_dir')
|
|
|
|
###################################################
|
|
#
|
|
# Define build environments for selected configurations.
|
|
#
|
|
###################################################
|
|
|
|
for variant_path in variant_paths:
|
|
print "Building in", variant_path
|
|
|
|
# Make a copy of the build-root environment to use for this config.
|
|
env = main.Clone()
|
|
env['BUILDDIR'] = variant_path
|
|
|
|
# variant_dir is the tail component of build path, and is used to
|
|
# determine the build parameters (e.g., 'ALPHA_SE')
|
|
(build_root, variant_dir) = splitpath(variant_path)
|
|
|
|
# Set env variables according to the build directory config.
|
|
sticky_vars.files = []
|
|
# Variables for $BUILD_ROOT/$VARIANT_DIR are stored in
|
|
# $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke
|
|
# $BUILD_ROOT/$VARIANT_DIR without losing your variables settings.
|
|
current_vars_file = joinpath(build_root, 'variables', variant_dir)
|
|
if isfile(current_vars_file):
|
|
sticky_vars.files.append(current_vars_file)
|
|
print "Using saved variables file %s" % current_vars_file
|
|
else:
|
|
# Build dir-specific variables file doesn't exist.
|
|
|
|
# Make sure the directory is there so we can create it later
|
|
opt_dir = dirname(current_vars_file)
|
|
if not isdir(opt_dir):
|
|
mkdir(opt_dir)
|
|
|
|
# Get default build variables from source tree. Variables are
|
|
# normally determined by name of $VARIANT_DIR, but can be
|
|
# overriden by 'default=' arg on command line.
|
|
default_vars_file = joinpath('build_opts',
|
|
ARGUMENTS.get('default', variant_dir))
|
|
if isfile(default_vars_file):
|
|
sticky_vars.files.append(default_vars_file)
|
|
print "Variables file %s not found,\n using defaults in %s" \
|
|
% (current_vars_file, default_vars_file)
|
|
else:
|
|
print "Error: cannot find variables file %s or %s" \
|
|
% (current_vars_file, default_vars_file)
|
|
Exit(1)
|
|
|
|
# Apply current variable settings to env
|
|
sticky_vars.Update(env)
|
|
nonsticky_vars.Update(env)
|
|
|
|
help_text += "\nSticky variables for %s:\n" % variant_dir \
|
|
+ sticky_vars.GenerateHelpText(env) \
|
|
+ "\nNon-sticky variables for %s:\n" % variant_dir \
|
|
+ nonsticky_vars.GenerateHelpText(env)
|
|
|
|
# Process variable settings.
|
|
|
|
if not have_fenv and env['USE_FENV']:
|
|
print "Warning: <fenv.h> not available; " \
|
|
"forcing USE_FENV to False in", variant_dir + "."
|
|
env['USE_FENV'] = False
|
|
|
|
if not env['USE_FENV']:
|
|
print "Warning: No IEEE FP rounding mode control in", variant_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", variant_dir + "."
|
|
env['USE_MYSQL'] = False
|
|
else:
|
|
print "Compiling in", variant_dir, "with MySQL support."
|
|
env.ParseConfig(mysql_config_libs)
|
|
env.ParseConfig(mysql_config_include)
|
|
|
|
# Save sticky variable settings back to current variables file
|
|
sticky_vars.Save(current_vars_file, env)
|
|
|
|
if env['USE_SSE2']:
|
|
env.Append(CCFLAGS='-msse2')
|
|
|
|
# The src/SConscript file sets up the build rules in 'env' according
|
|
# to the configured variables. It returns a list of environments,
|
|
# one for each variant build (debug, opt, etc.)
|
|
envList = SConscript('src/SConscript', variant_dir = variant_path,
|
|
exports = 'env')
|
|
|
|
# Set up the regression tests for each build.
|
|
for e in envList:
|
|
SConscript('tests/SConscript',
|
|
variant_dir = joinpath(variant_path, 'tests', e.Label),
|
|
exports = { 'env' : e }, duplicate = False)
|
|
|
|
Help(help_text)
|