SConstruct revision 9590
17199Sgblack@eecs.umich.edu# -*- mode:python -*- 27199Sgblack@eecs.umich.edu 37199Sgblack@eecs.umich.edu# Copyright (c) 2011 Advanced Micro Devices, Inc. 47199Sgblack@eecs.umich.edu# Copyright (c) 2009 The Hewlett-Packard Development Company 57199Sgblack@eecs.umich.edu# Copyright (c) 2004-2005 The Regents of The University of Michigan 67199Sgblack@eecs.umich.edu# All rights reserved. 77199Sgblack@eecs.umich.edu# 87199Sgblack@eecs.umich.edu# Redistribution and use in source and binary forms, with or without 97199Sgblack@eecs.umich.edu# modification, are permitted provided that the following conditions are 107199Sgblack@eecs.umich.edu# met: redistributions of source code must retain the above copyright 117199Sgblack@eecs.umich.edu# notice, this list of conditions and the following disclaimer; 127199Sgblack@eecs.umich.edu# redistributions in binary form must reproduce the above copyright 137199Sgblack@eecs.umich.edu# notice, this list of conditions and the following disclaimer in the 147199Sgblack@eecs.umich.edu# documentation and/or other materials provided with the distribution; 157199Sgblack@eecs.umich.edu# neither the name of the copyright holders nor the names of its 167199Sgblack@eecs.umich.edu# contributors may be used to endorse or promote products derived from 177199Sgblack@eecs.umich.edu# this software without specific prior written permission. 187199Sgblack@eecs.umich.edu# 197199Sgblack@eecs.umich.edu# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 207199Sgblack@eecs.umich.edu# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 217199Sgblack@eecs.umich.edu# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 227199Sgblack@eecs.umich.edu# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 237199Sgblack@eecs.umich.edu# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 247199Sgblack@eecs.umich.edu# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 257199Sgblack@eecs.umich.edu# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 267199Sgblack@eecs.umich.edu# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 277199Sgblack@eecs.umich.edu# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 287199Sgblack@eecs.umich.edu# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 297199Sgblack@eecs.umich.edu# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 307199Sgblack@eecs.umich.edu# 317199Sgblack@eecs.umich.edu# Authors: Steve Reinhardt 327199Sgblack@eecs.umich.edu# Nathan Binkert 337199Sgblack@eecs.umich.edu 347199Sgblack@eecs.umich.edu################################################### 357199Sgblack@eecs.umich.edu# 367199Sgblack@eecs.umich.edu# SCons top-level build description (SConstruct) file. 377199Sgblack@eecs.umich.edu# 387199Sgblack@eecs.umich.edu# While in this directory ('gem5'), just type 'scons' to build the default 397199Sgblack@eecs.umich.edu# configuration (see below), or type 'scons build/<CONFIG>/<binary>' 407199Sgblack@eecs.umich.edu# to build some other configuration (e.g., 'build/ALPHA/gem5.opt' for 417199Sgblack@eecs.umich.edu# the optimized full-system version). 427199Sgblack@eecs.umich.edu# 437199Sgblack@eecs.umich.edu# You can build gem5 in a different directory as long as there is a 447199Sgblack@eecs.umich.edu# 'build/<CONFIG>' somewhere along the target path. The build system 457199Sgblack@eecs.umich.edu# expects that all configs under the same build directory are being 467199Sgblack@eecs.umich.edu# built for the same host system. 477199Sgblack@eecs.umich.edu# 487199Sgblack@eecs.umich.edu# Examples: 497199Sgblack@eecs.umich.edu# 507199Sgblack@eecs.umich.edu# The following two commands are equivalent. The '-u' option tells 517199Sgblack@eecs.umich.edu# scons to search up the directory tree for this SConstruct file. 527199Sgblack@eecs.umich.edu# % cd <path-to-src>/gem5 ; scons build/ALPHA/gem5.debug 537199Sgblack@eecs.umich.edu# % cd <path-to-src>/gem5/build/ALPHA; scons -u gem5.debug 547199Sgblack@eecs.umich.edu# 557199Sgblack@eecs.umich.edu# The following two commands are equivalent and demonstrate building 567199Sgblack@eecs.umich.edu# in a directory outside of the source tree. The '-C' option tells 577199Sgblack@eecs.umich.edu# scons to chdir to the specified directory to find this SConstruct 587202Sgblack@eecs.umich.edu# file. 597202Sgblack@eecs.umich.edu# % cd <path-to-src>/gem5 ; scons /local/foo/build/ALPHA/gem5.debug 607202Sgblack@eecs.umich.edu# % cd /local/foo/build/ALPHA; scons -C <path-to-src>/gem5 gem5.debug 617202Sgblack@eecs.umich.edu# 627202Sgblack@eecs.umich.edu# You can use 'scons -H' to print scons options. If you're in this 637202Sgblack@eecs.umich.edu# 'gem5' directory (or use -u or -C to tell scons where to find this 647202Sgblack@eecs.umich.edu# file), you can use 'scons -h' to print all the gem5-specific build 657202Sgblack@eecs.umich.edu# options as well. 667599Sminkyu.jeong@arm.com# 677783SGiacomo.Gabrielli@arm.com################################################### 687202Sgblack@eecs.umich.edu 697202Sgblack@eecs.umich.edu# Check for recent-enough Python and SCons versions. 707202Sgblack@eecs.umich.edutry: 717202Sgblack@eecs.umich.edu # Really old versions of scons only take two options for the 727202Sgblack@eecs.umich.edu # function, so check once without the revision and once with the 737202Sgblack@eecs.umich.edu # revision, the first instance will fail for stuff other than 747202Sgblack@eecs.umich.edu # 0.98, and the second will fail for 0.98.0 757599Sminkyu.jeong@arm.com EnsureSConsVersion(0, 98) 767783SGiacomo.Gabrielli@arm.com EnsureSConsVersion(0, 98, 1) 777202Sgblack@eecs.umich.eduexcept SystemExit, e: 787202Sgblack@eecs.umich.edu print """ 797202Sgblack@eecs.umich.eduFor more details, see: 807202Sgblack@eecs.umich.edu http://gem5.org/Dependencies 817202Sgblack@eecs.umich.edu""" 827400SAli.Saidi@ARM.com raise 837202Sgblack@eecs.umich.edu 847400SAli.Saidi@ARM.com# We ensure the python version early because we have stuff that 857202Sgblack@eecs.umich.edu# requires python 2.4 867797Sgblack@eecs.umich.edutry: 877797Sgblack@eecs.umich.edu EnsurePythonVersion(2, 4) 887858SMatt.Horsnell@arm.comexcept SystemExit, e: 897858SMatt.Horsnell@arm.com print """ 907202Sgblack@eecs.umich.eduYou can use a non-default installation of the Python interpreter by 917202Sgblack@eecs.umich.edueither (1) rearranging your PATH so that scons finds the non-default 927202Sgblack@eecs.umich.edu'python' first or (2) explicitly invoking an alternative interpreter 937202Sgblack@eecs.umich.eduon the scons script. 947599Sminkyu.jeong@arm.com 957599Sminkyu.jeong@arm.comFor more details, see: 967202Sgblack@eecs.umich.edu http://gem5.org/wiki/index.php/Using_a_non-default_Python_installation 977202Sgblack@eecs.umich.edu""" 987202Sgblack@eecs.umich.edu raise 997202Sgblack@eecs.umich.edu 1007202Sgblack@eecs.umich.edu# Global Python includes 1017202Sgblack@eecs.umich.eduimport os 1027202Sgblack@eecs.umich.eduimport re 1037599Sminkyu.jeong@arm.comimport subprocess 1047599Sminkyu.jeong@arm.comimport sys 1057202Sgblack@eecs.umich.edu 1067202Sgblack@eecs.umich.edufrom os import mkdir, environ 1077202Sgblack@eecs.umich.edufrom os.path import abspath, basename, dirname, expanduser, normpath 1087202Sgblack@eecs.umich.edufrom os.path import exists, isdir, isfile 1097202Sgblack@eecs.umich.edufrom os.path import join as joinpath, split as splitpath 1107400SAli.Saidi@ARM.com 1117202Sgblack@eecs.umich.edu# SCons includes 1127400SAli.Saidi@ARM.comimport SCons 1137202Sgblack@eecs.umich.eduimport SCons.Node 1147797Sgblack@eecs.umich.edu 1157797Sgblack@eecs.umich.eduextra_python_paths = [ 1167858SMatt.Horsnell@arm.com Dir('src/python').srcnode().abspath, # gem5 includes 1177858SMatt.Horsnell@arm.com Dir('ext/ply').srcnode().abspath, # ply is used by several files 1187202Sgblack@eecs.umich.edu ] 1197202Sgblack@eecs.umich.edu 1207202Sgblack@eecs.umich.edusys.path[1:1] = extra_python_paths 1217202Sgblack@eecs.umich.edu 1227599Sminkyu.jeong@arm.comfrom m5.util import compareVersions, readCommand 1237599Sminkyu.jeong@arm.comfrom m5.util.terminal import get_termcap 1247202Sgblack@eecs.umich.edu 1257202Sgblack@eecs.umich.eduhelp_texts = { 1267202Sgblack@eecs.umich.edu "options" : "", 1277202Sgblack@eecs.umich.edu "global_vars" : "", 1287202Sgblack@eecs.umich.edu "local_vars" : "" 1297202Sgblack@eecs.umich.edu} 1307202Sgblack@eecs.umich.edu 1317599Sminkyu.jeong@arm.comExport("help_texts") 1327599Sminkyu.jeong@arm.com 1337202Sgblack@eecs.umich.edu 1347202Sgblack@eecs.umich.edu# There's a bug in scons in that (1) by default, the help texts from 1357202Sgblack@eecs.umich.edu# AddOption() are supposed to be displayed when you type 'scons -h' 1367209Sgblack@eecs.umich.edu# and (2) you can override the help displayed by 'scons -h' using the 1377209Sgblack@eecs.umich.edu# Help() function, but these two features are incompatible: once 1387209Sgblack@eecs.umich.edu# you've overridden the help text using Help(), there's no way to get 1397209Sgblack@eecs.umich.edu# at the help texts from AddOptions. See: 1407209Sgblack@eecs.umich.edu# http://scons.tigris.org/issues/show_bug.cgi?id=2356 1417261Sgblack@eecs.umich.edu# http://scons.tigris.org/issues/show_bug.cgi?id=2611 1427209Sgblack@eecs.umich.edu# This hack lets us extract the help text from AddOptions and 1437209Sgblack@eecs.umich.edu# re-inject it via Help(). Ideally someday this bug will be fixed and 1447261Sgblack@eecs.umich.edu# we can just use AddOption directly. 1457261Sgblack@eecs.umich.edudef AddLocalOption(*args, **kwargs): 1467209Sgblack@eecs.umich.edu col_width = 30 1477209Sgblack@eecs.umich.edu 1487209Sgblack@eecs.umich.edu help = " " + ", ".join(args) 1497209Sgblack@eecs.umich.edu if "help" in kwargs: 1507209Sgblack@eecs.umich.edu length = len(help) 1517209Sgblack@eecs.umich.edu if length >= col_width: 1527209Sgblack@eecs.umich.edu help += "\n" + " " * col_width 1537209Sgblack@eecs.umich.edu else: 1547209Sgblack@eecs.umich.edu help += " " * (col_width - length) 1557261Sgblack@eecs.umich.edu help += kwargs["help"] 1567209Sgblack@eecs.umich.edu help_texts["options"] += help + "\n" 1577209Sgblack@eecs.umich.edu 1587261Sgblack@eecs.umich.edu AddOption(*args, **kwargs) 1597261Sgblack@eecs.umich.edu 1607209Sgblack@eecs.umich.eduAddLocalOption('--colors', dest='use_colors', action='store_true', 1617209Sgblack@eecs.umich.edu help="Add color to abbreviated scons output") 1627209Sgblack@eecs.umich.eduAddLocalOption('--no-colors', dest='use_colors', action='store_false', 1637209Sgblack@eecs.umich.edu help="Don't add color to abbreviated scons output") 1647209Sgblack@eecs.umich.eduAddLocalOption('--default', dest='default', type='string', action='store', 1657209Sgblack@eecs.umich.edu help='Override which build_opts file to use for defaults') 1667261Sgblack@eecs.umich.eduAddLocalOption('--ignore-style', dest='ignore_style', action='store_true', 1677209Sgblack@eecs.umich.edu help='Disable style checking hooks') 1687209Sgblack@eecs.umich.eduAddLocalOption('--no-lto', dest='no_lto', action='store_true', 1697261Sgblack@eecs.umich.edu help='Disable Link-Time Optimization for fast') 1707261Sgblack@eecs.umich.eduAddLocalOption('--update-ref', dest='update_ref', action='store_true', 1717209Sgblack@eecs.umich.edu help='Update test reference outputs') 1727226Sgblack@eecs.umich.eduAddLocalOption('--verbose', dest='verbose', action='store_true', 1737249Sgblack@eecs.umich.edu help='Print full tool command lines') 1747249Sgblack@eecs.umich.edu 1757249Sgblack@eecs.umich.edutermcap = get_termcap(GetOption('use_colors')) 1767249Sgblack@eecs.umich.edu 1777249Sgblack@eecs.umich.edu######################################################################## 1787249Sgblack@eecs.umich.edu# 1797249Sgblack@eecs.umich.edu# Set up the main build environment. 1807249Sgblack@eecs.umich.edu# 1817249Sgblack@eecs.umich.edu######################################################################## 1827249Sgblack@eecs.umich.eduuse_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 1837249Sgblack@eecs.umich.edu 'LIBRARY_PATH', 'PATH', 'PKG_CONFIG_PATH', 'PYTHONPATH', 1847249Sgblack@eecs.umich.edu 'RANLIB', 'SWIG' ]) 1857249Sgblack@eecs.umich.edu 1867261Sgblack@eecs.umich.eduuse_prefixes = [ 1877249Sgblack@eecs.umich.edu "M5", # M5 configuration (e.g., path to kernels) 1887249Sgblack@eecs.umich.edu "DISTCC_", # distcc (distributed compiler wrapper) configuration 1897261Sgblack@eecs.umich.edu "CCACHE_", # ccache (caching compiler wrapper) configuration 1907261Sgblack@eecs.umich.edu "CCC_", # clang static analyzer configuration 1917249Sgblack@eecs.umich.edu ] 1927249Sgblack@eecs.umich.edu 1937251Sgblack@eecs.umich.eduuse_env = {} 1947251Sgblack@eecs.umich.edufor key,val in os.environ.iteritems(): 1957251Sgblack@eecs.umich.edu if key in use_vars or \ 1967261Sgblack@eecs.umich.edu any([key.startswith(prefix) for prefix in use_prefixes]): 1977251Sgblack@eecs.umich.edu use_env[key] = val 1987251Sgblack@eecs.umich.edu 1997261Sgblack@eecs.umich.edumain = Environment(ENV=use_env) 2007261Sgblack@eecs.umich.edumain.Decider('MD5-timestamp') 2017251Sgblack@eecs.umich.edumain.root = Dir(".") # The current directory (where this file lives). 2027251Sgblack@eecs.umich.edumain.srcdir = Dir("src") # The source directory 2037226Sgblack@eecs.umich.edu 2047226Sgblack@eecs.umich.edumain_dict_keys = main.Dictionary().keys() 2057226Sgblack@eecs.umich.edu 2067232Sgblack@eecs.umich.edu# Check that we have a C/C++ compiler 2077226Sgblack@eecs.umich.eduif not ('CC' in main_dict_keys and 'CXX' in main_dict_keys): 2087226Sgblack@eecs.umich.edu print "No C++ compiler installed (package g++ on Ubuntu and RedHat)" 2097226Sgblack@eecs.umich.edu Exit(1) 2107226Sgblack@eecs.umich.edu 2117226Sgblack@eecs.umich.edu# Check that swig is present 2127232Sgblack@eecs.umich.eduif not 'SWIG' in main_dict_keys: 2137226Sgblack@eecs.umich.edu print "swig is not installed (package swig on Ubuntu and RedHat)" 2147422Sgblack@eecs.umich.edu Exit(1) 2157232Sgblack@eecs.umich.edu 2167232Sgblack@eecs.umich.edu# add useful python code PYTHONPATH so it can be used by subprocesses 2177226Sgblack@eecs.umich.edu# as well 2187226Sgblack@eecs.umich.edumain.AppendENVPath('PYTHONPATH', extra_python_paths) 2197226Sgblack@eecs.umich.edu 2207226Sgblack@eecs.umich.edu######################################################################## 2217226Sgblack@eecs.umich.edu# 2227232Sgblack@eecs.umich.edu# Mercurial Stuff. 2237226Sgblack@eecs.umich.edu# 2247226Sgblack@eecs.umich.edu# If the gem5 directory is a mercurial repository, we should do some 2257226Sgblack@eecs.umich.edu# extra things. 2267226Sgblack@eecs.umich.edu# 2277226Sgblack@eecs.umich.edu######################################################################## 2287232Sgblack@eecs.umich.edu 2297226Sgblack@eecs.umich.eduhgdir = main.root.Dir(".hg") 2307422Sgblack@eecs.umich.edu 2317232Sgblack@eecs.umich.edumercurial_style_message = """ 2327232Sgblack@eecs.umich.eduYou're missing the gem5 style hook, which automatically checks your code 2337226Sgblack@eecs.umich.eduagainst the gem5 style rules on hg commit and qrefresh commands. This 2347226Sgblack@eecs.umich.eduscript will now install the hook in your .hg/hgrc file. 2357226Sgblack@eecs.umich.eduPress enter to continue, or ctrl-c to abort: """ 2367226Sgblack@eecs.umich.edu 2377226Sgblack@eecs.umich.edumercurial_style_hook = """ 2387226Sgblack@eecs.umich.edu# The following lines were automatically added by gem5/SConstruct 2397226Sgblack@eecs.umich.edu# to provide the gem5 style-checking hooks 2407226Sgblack@eecs.umich.edu[extensions] 2417232Sgblack@eecs.umich.edustyle = %s/util/style.py 2427226Sgblack@eecs.umich.edu 2437226Sgblack@eecs.umich.edu[hooks] 2447232Sgblack@eecs.umich.edupretxncommit.style = python:style.check_style 2457226Sgblack@eecs.umich.edupre-qrefresh.style = python:style.check_style 2467226Sgblack@eecs.umich.edu# End of SConstruct additions 2477226Sgblack@eecs.umich.edu 2487226Sgblack@eecs.umich.edu""" % (main.root.abspath) 2497232Sgblack@eecs.umich.edu 2507226Sgblack@eecs.umich.edumercurial_lib_not_found = """ 2517422Sgblack@eecs.umich.eduMercurial libraries cannot be found, ignoring style hook. If 2527232Sgblack@eecs.umich.eduyou are a gem5 developer, please fix this and run the style 2537232Sgblack@eecs.umich.eduhook. It is important. 2547226Sgblack@eecs.umich.edu""" 2557226Sgblack@eecs.umich.edu 2567226Sgblack@eecs.umich.edu# Check for style hook and prompt for installation if it's not there. 2577226Sgblack@eecs.umich.edu# Skip this if --ignore-style was specified, there's no .hg dir to 2587226Sgblack@eecs.umich.edu# install a hook in, or there's no interactive terminal to prompt. 2597226Sgblack@eecs.umich.eduif not GetOption('ignore_style') and hgdir.exists() and sys.stdin.isatty(): 2607226Sgblack@eecs.umich.edu style_hook = True 2617226Sgblack@eecs.umich.edu try: 2627232Sgblack@eecs.umich.edu from mercurial import ui 2637226Sgblack@eecs.umich.edu ui = ui.ui() 2647226Sgblack@eecs.umich.edu ui.readconfig(hgdir.File('hgrc').abspath) 2657232Sgblack@eecs.umich.edu style_hook = ui.config('hooks', 'pretxncommit.style', None) and \ 2667226Sgblack@eecs.umich.edu ui.config('hooks', 'pre-qrefresh.style', None) 2677226Sgblack@eecs.umich.edu except ImportError: 2687226Sgblack@eecs.umich.edu print mercurial_lib_not_found 2697226Sgblack@eecs.umich.edu 2707232Sgblack@eecs.umich.edu if not style_hook: 2717226Sgblack@eecs.umich.edu print mercurial_style_message, 2727422Sgblack@eecs.umich.edu # continue unless user does ctrl-c/ctrl-d etc. 2737232Sgblack@eecs.umich.edu try: 2747232Sgblack@eecs.umich.edu raw_input() 2757226Sgblack@eecs.umich.edu except: 2767234Sgblack@eecs.umich.edu print "Input exception, exiting scons.\n" 2777234Sgblack@eecs.umich.edu sys.exit(1) 2787234Sgblack@eecs.umich.edu hgrc_path = '%s/.hg/hgrc' % main.root.abspath 2797234Sgblack@eecs.umich.edu print "Adding style hook to", hgrc_path, "\n" 2807234Sgblack@eecs.umich.edu try: 2817234Sgblack@eecs.umich.edu hgrc = open(hgrc_path, 'a') 2827234Sgblack@eecs.umich.edu hgrc.write(mercurial_style_hook) 2837234Sgblack@eecs.umich.edu hgrc.close() 2847234Sgblack@eecs.umich.edu except: 2857234Sgblack@eecs.umich.edu print "Error updating", hgrc_path 2867234Sgblack@eecs.umich.edu sys.exit(1) 2877234Sgblack@eecs.umich.edu 2887234Sgblack@eecs.umich.edu 2897234Sgblack@eecs.umich.edu################################################### 2907234Sgblack@eecs.umich.edu# 2917234Sgblack@eecs.umich.edu# Figure out which configurations to set up based on the path(s) of 2927234Sgblack@eecs.umich.edu# the target(s). 2937234Sgblack@eecs.umich.edu# 2947234Sgblack@eecs.umich.edu################################################### 2957234Sgblack@eecs.umich.edu 2967234Sgblack@eecs.umich.edu# Find default configuration & binary. 2977234Sgblack@eecs.umich.eduDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA/gem5.debug')) 2987234Sgblack@eecs.umich.edu 2997234Sgblack@eecs.umich.edu# helper function: find last occurrence of element in list 3007234Sgblack@eecs.umich.edudef rfind(l, elt, offs = -1): 3017234Sgblack@eecs.umich.edu for i in range(len(l)+offs, 0, -1): 3027234Sgblack@eecs.umich.edu if l[i] == elt: 3037234Sgblack@eecs.umich.edu return i 3047234Sgblack@eecs.umich.edu raise ValueError, "element not found" 3057234Sgblack@eecs.umich.edu 3067234Sgblack@eecs.umich.edu# Take a list of paths (or SCons Nodes) and return a list with all 3077234Sgblack@eecs.umich.edu# paths made absolute and ~-expanded. Paths will be interpreted 3087234Sgblack@eecs.umich.edu# relative to the launch directory unless a different root is provided 3097234Sgblack@eecs.umich.edudef makePathListAbsolute(path_list, root=GetLaunchDir()): 3107234Sgblack@eecs.umich.edu return [abspath(joinpath(root, expanduser(str(p)))) 3117234Sgblack@eecs.umich.edu for p in path_list] 3127234Sgblack@eecs.umich.edu 3137234Sgblack@eecs.umich.edu# Each target must have 'build' in the interior of the path; the 3147234Sgblack@eecs.umich.edu# directory below this will determine the build parameters. For 3157234Sgblack@eecs.umich.edu# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 3167234Sgblack@eecs.umich.edu# recognize that ALPHA_SE specifies the configuration because it 3177234Sgblack@eecs.umich.edu# follow 'build' in the build path. 3187234Sgblack@eecs.umich.edu 3197234Sgblack@eecs.umich.edu# The funky assignment to "[:]" is needed to replace the list contents 3207234Sgblack@eecs.umich.edu# in place rather than reassign the symbol to a new list, which 3217234Sgblack@eecs.umich.edu# doesn't work (obviously!). 3227234Sgblack@eecs.umich.eduBUILD_TARGETS[:] = makePathListAbsolute(BUILD_TARGETS) 3237234Sgblack@eecs.umich.edu 3247234Sgblack@eecs.umich.edu# Generate a list of the unique build roots and configs that the 3257234Sgblack@eecs.umich.edu# collected targets reference. 3267234Sgblack@eecs.umich.eduvariant_paths = [] 3277234Sgblack@eecs.umich.edubuild_root = None 3287234Sgblack@eecs.umich.edufor t in BUILD_TARGETS: 3297234Sgblack@eecs.umich.edu path_dirs = t.split('/') 3307234Sgblack@eecs.umich.edu try: 3317234Sgblack@eecs.umich.edu build_top = rfind(path_dirs, 'build', -2) 3327234Sgblack@eecs.umich.edu except: 3337234Sgblack@eecs.umich.edu print "Error: no non-leaf 'build' dir found on target path", t 3347234Sgblack@eecs.umich.edu Exit(1) 3357234Sgblack@eecs.umich.edu this_build_root = joinpath('/',*path_dirs[:build_top+1]) 3367234Sgblack@eecs.umich.edu if not build_root: 3377234Sgblack@eecs.umich.edu build_root = this_build_root 3387234Sgblack@eecs.umich.edu else: 3397234Sgblack@eecs.umich.edu if this_build_root != build_root: 3407234Sgblack@eecs.umich.edu print "Error: build targets not under same build root\n"\ 3417234Sgblack@eecs.umich.edu " %s\n %s" % (build_root, this_build_root) 3427234Sgblack@eecs.umich.edu Exit(1) 3437234Sgblack@eecs.umich.edu variant_path = joinpath('/',*path_dirs[:build_top+2]) 3447234Sgblack@eecs.umich.edu if variant_path not in variant_paths: 3457234Sgblack@eecs.umich.edu variant_paths.append(variant_path) 3467234Sgblack@eecs.umich.edu 3477234Sgblack@eecs.umich.edu# Make sure build_root exists (might not if this is the first build there) 3487234Sgblack@eecs.umich.eduif not isdir(build_root): 3497234Sgblack@eecs.umich.edu mkdir(build_root) 3507234Sgblack@eecs.umich.edumain['BUILDROOT'] = build_root 3517234Sgblack@eecs.umich.edu 3527234Sgblack@eecs.umich.eduExport('main') 3537234Sgblack@eecs.umich.edu 3547234Sgblack@eecs.umich.edumain.SConsignFile(joinpath(build_root, "sconsign")) 3557234Sgblack@eecs.umich.edu 3567234Sgblack@eecs.umich.edu# Default duplicate option is to use hard links, but this messes up 3577234Sgblack@eecs.umich.edu# when you use emacs to edit a file in the target dir, as emacs moves 3587234Sgblack@eecs.umich.edu# file to file~ then copies to file, breaking the link. Symbolic 3597234Sgblack@eecs.umich.edu# (soft) links work better. 3607234Sgblack@eecs.umich.edumain.SetOption('duplicate', 'soft-copy') 3617234Sgblack@eecs.umich.edu 3627234Sgblack@eecs.umich.edu# 3637234Sgblack@eecs.umich.edu# Set up global sticky variables... these are common to an entire build 3647234Sgblack@eecs.umich.edu# tree (not specific to a particular build like ALPHA_SE) 3657234Sgblack@eecs.umich.edu# 3667234Sgblack@eecs.umich.edu 3677234Sgblack@eecs.umich.eduglobal_vars_file = joinpath(build_root, 'variables.global') 3687234Sgblack@eecs.umich.edu 3697234Sgblack@eecs.umich.eduglobal_vars = Variables(global_vars_file, args=ARGUMENTS) 3707234Sgblack@eecs.umich.edu 3717234Sgblack@eecs.umich.eduglobal_vars.AddVariables( 3727234Sgblack@eecs.umich.edu ('CC', 'C compiler', environ.get('CC', main['CC'])), 3737234Sgblack@eecs.umich.edu ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 3747234Sgblack@eecs.umich.edu ('SWIG', 'SWIG tool', environ.get('SWIG', main['SWIG'])), 3757234Sgblack@eecs.umich.edu ('PROTOC', 'protoc tool', environ.get('PROTOC', 'protoc')), 3767234Sgblack@eecs.umich.edu ('BATCH', 'Use batch pool for build and tests', False), 3777234Sgblack@eecs.umich.edu ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 3787234Sgblack@eecs.umich.edu ('M5_BUILD_CACHE', 'Cache built objects in this directory', False), 3797234Sgblack@eecs.umich.edu ('EXTRAS', 'Add extra directories to the compilation', '') 3807234Sgblack@eecs.umich.edu ) 3817234Sgblack@eecs.umich.edu 3827234Sgblack@eecs.umich.edu# Update main environment with values from ARGUMENTS & global_vars_file 3837234Sgblack@eecs.umich.eduglobal_vars.Update(main) 3847234Sgblack@eecs.umich.eduhelp_texts["global_vars"] += global_vars.GenerateHelpText(main) 3857234Sgblack@eecs.umich.edu 3867234Sgblack@eecs.umich.edu# Save sticky variable settings back to current variables file 3877234Sgblack@eecs.umich.eduglobal_vars.Save(global_vars_file, main) 3887234Sgblack@eecs.umich.edu 3897234Sgblack@eecs.umich.edu# Parse EXTRAS variable to build list of all directories where we're 3907234Sgblack@eecs.umich.edu# look for sources etc. This list is exported as extras_dir_list. 3917234Sgblack@eecs.umich.edubase_dir = main.srcdir.abspath 3927234Sgblack@eecs.umich.eduif main['EXTRAS']: 3937234Sgblack@eecs.umich.edu extras_dir_list = makePathListAbsolute(main['EXTRAS'].split(':')) 3947234Sgblack@eecs.umich.eduelse: 3957234Sgblack@eecs.umich.edu extras_dir_list = [] 3967234Sgblack@eecs.umich.edu 3977234Sgblack@eecs.umich.eduExport('base_dir') 3987234Sgblack@eecs.umich.eduExport('extras_dir_list') 3997234Sgblack@eecs.umich.edu 4007234Sgblack@eecs.umich.edu# the ext directory should be on the #includes path 4017234Sgblack@eecs.umich.edumain.Append(CPPPATH=[Dir('ext')]) 4027234Sgblack@eecs.umich.edu 4037234Sgblack@eecs.umich.edudef strip_build_path(path, env): 4047234Sgblack@eecs.umich.edu path = str(path) 4057234Sgblack@eecs.umich.edu variant_base = env['BUILDROOT'] + os.path.sep 4067234Sgblack@eecs.umich.edu if path.startswith(variant_base): 4077234Sgblack@eecs.umich.edu path = path[len(variant_base):] 4087234Sgblack@eecs.umich.edu elif path.startswith('build/'): 4097234Sgblack@eecs.umich.edu path = path[6:] 4107234Sgblack@eecs.umich.edu return path 4117234Sgblack@eecs.umich.edu 4127234Sgblack@eecs.umich.edu# Generate a string of the form: 4137234Sgblack@eecs.umich.edu# common/path/prefix/src1, src2 -> tgt1, tgt2 4147234Sgblack@eecs.umich.edu# to print while building. 4157234Sgblack@eecs.umich.educlass Transform(object): 4167234Sgblack@eecs.umich.edu # all specific color settings should be here and nowhere else 4177234Sgblack@eecs.umich.edu tool_color = termcap.Normal 4187239Sgblack@eecs.umich.edu pfx_color = termcap.Yellow 4197239Sgblack@eecs.umich.edu srcs_color = termcap.Yellow + termcap.Bold 4207239Sgblack@eecs.umich.edu arrow_color = termcap.Blue + termcap.Bold 4217239Sgblack@eecs.umich.edu tgts_color = termcap.Yellow + termcap.Bold 4227239Sgblack@eecs.umich.edu 4237239Sgblack@eecs.umich.edu def __init__(self, tool, max_sources=99): 4247239Sgblack@eecs.umich.edu self.format = self.tool_color + (" [%8s] " % tool) \ 4257239Sgblack@eecs.umich.edu + self.pfx_color + "%s" \ 4267239Sgblack@eecs.umich.edu + self.srcs_color + "%s" \ 4277239Sgblack@eecs.umich.edu + self.arrow_color + " -> " \ 4287239Sgblack@eecs.umich.edu + self.tgts_color + "%s" \ 4297239Sgblack@eecs.umich.edu + termcap.Normal 4307239Sgblack@eecs.umich.edu self.max_sources = max_sources 4317239Sgblack@eecs.umich.edu 4327422Sgblack@eecs.umich.edu def __call__(self, target, source, env, for_signature=None): 4337239Sgblack@eecs.umich.edu # truncate source list according to max_sources param 4347239Sgblack@eecs.umich.edu source = source[0:self.max_sources] 4357239Sgblack@eecs.umich.edu def strip(f): 4367242Sgblack@eecs.umich.edu return strip_build_path(str(f), env) 4377242Sgblack@eecs.umich.edu if len(source) > 0: 4387242Sgblack@eecs.umich.edu srcs = map(strip, source) 4397242Sgblack@eecs.umich.edu else: 4407242Sgblack@eecs.umich.edu srcs = [''] 4417242Sgblack@eecs.umich.edu tgts = map(strip, target) 4427242Sgblack@eecs.umich.edu # surprisingly, os.path.commonprefix is a dumb char-by-char string 4437242Sgblack@eecs.umich.edu # operation that has nothing to do with paths. 4447242Sgblack@eecs.umich.edu com_pfx = os.path.commonprefix(srcs + tgts) 4457242Sgblack@eecs.umich.edu com_pfx_len = len(com_pfx) 4467242Sgblack@eecs.umich.edu if com_pfx: 4477242Sgblack@eecs.umich.edu # do some cleanup and sanity checking on common prefix 4487242Sgblack@eecs.umich.edu if com_pfx[-1] == ".": 4497242Sgblack@eecs.umich.edu # prefix matches all but file extension: ok 4507242Sgblack@eecs.umich.edu # back up one to change 'foo.cc -> o' to 'foo.cc -> .o' 4517242Sgblack@eecs.umich.edu com_pfx = com_pfx[0:-1] 4527242Sgblack@eecs.umich.edu elif com_pfx[-1] == "/": 4537242Sgblack@eecs.umich.edu # common prefix is directory path: OK 4547242Sgblack@eecs.umich.edu pass 4557242Sgblack@eecs.umich.edu else: 4567242Sgblack@eecs.umich.edu src0_len = len(srcs[0]) 4577242Sgblack@eecs.umich.edu tgt0_len = len(tgts[0]) 4587242Sgblack@eecs.umich.edu if src0_len == com_pfx_len: 4597242Sgblack@eecs.umich.edu # source is a substring of target, OK 4607242Sgblack@eecs.umich.edu pass 4617242Sgblack@eecs.umich.edu elif tgt0_len == com_pfx_len: 4627242Sgblack@eecs.umich.edu # target is a substring of source, need to back up to 4637242Sgblack@eecs.umich.edu # avoid empty string on RHS of arrow 4647242Sgblack@eecs.umich.edu sep_idx = com_pfx.rfind(".") 4657242Sgblack@eecs.umich.edu if sep_idx != -1: 4667242Sgblack@eecs.umich.edu com_pfx = com_pfx[0:sep_idx] 4677242Sgblack@eecs.umich.edu else: 4687242Sgblack@eecs.umich.edu com_pfx = '' 4697242Sgblack@eecs.umich.edu elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".": 4707242Sgblack@eecs.umich.edu # still splitting at file extension: ok 4717242Sgblack@eecs.umich.edu pass 4727247Sgblack@eecs.umich.edu else: 4737797Sgblack@eecs.umich.edu # probably a fluke; ignore it 4747848SAli.Saidi@ARM.com com_pfx = '' 4757410Sgblack@eecs.umich.edu # recalculate length in case com_pfx was modified 4767410Sgblack@eecs.umich.edu com_pfx_len = len(com_pfx) 4777410Sgblack@eecs.umich.edu def fmt(files): 4787410Sgblack@eecs.umich.edu f = map(lambda s: s[com_pfx_len:], files) 4797408Sgblack@eecs.umich.edu return ', '.join(f) 4807408Sgblack@eecs.umich.edu return self.format % (com_pfx, fmt(srcs), fmt(tgts)) 4817247Sgblack@eecs.umich.edu 4827247Sgblack@eecs.umich.eduExport('Transform') 4837408Sgblack@eecs.umich.edu 4847408Sgblack@eecs.umich.edu# enable the regression script to use the termcap 4857418Sgblack@eecs.umich.edumain['TERMCAP'] = termcap 4867418Sgblack@eecs.umich.edu 4877418Sgblack@eecs.umich.eduif GetOption('verbose'): 4887418Sgblack@eecs.umich.edu def MakeAction(action, string, *args, **kwargs): 4897418Sgblack@eecs.umich.edu return Action(action, *args, **kwargs) 4907418Sgblack@eecs.umich.eduelse: 4917418Sgblack@eecs.umich.edu MakeAction = Action 4927418Sgblack@eecs.umich.edu main['CCCOMSTR'] = Transform("CC") 4937418Sgblack@eecs.umich.edu main['CXXCOMSTR'] = Transform("CXX") 4947418Sgblack@eecs.umich.edu main['ASCOMSTR'] = Transform("AS") 4957418Sgblack@eecs.umich.edu main['SWIGCOMSTR'] = Transform("SWIG") 4967418Sgblack@eecs.umich.edu main['ARCOMSTR'] = Transform("AR", 0) 4977418Sgblack@eecs.umich.edu main['LINKCOMSTR'] = Transform("LINK", 0) 4987418Sgblack@eecs.umich.edu main['RANLIBCOMSTR'] = Transform("RANLIB", 0) 4997418Sgblack@eecs.umich.edu main['M4COMSTR'] = Transform("M4") 5007418Sgblack@eecs.umich.edu main['SHCCCOMSTR'] = Transform("SHCC") 5017648SAli.Saidi@ARM.com main['SHCXXCOMSTR'] = Transform("SHCXX") 5027418Sgblack@eecs.umich.eduExport('MakeAction') 5037418Sgblack@eecs.umich.edu 5047418Sgblack@eecs.umich.edu# Initialize the Link-Time Optimization (LTO) flags 5057418Sgblack@eecs.umich.edumain['LTO_CCFLAGS'] = [] 5067418Sgblack@eecs.umich.edumain['LTO_LDFLAGS'] = [] 5077418Sgblack@eecs.umich.edu 5087418Sgblack@eecs.umich.edu# According to the readme, tcmalloc works best if the compiler doesn't 5097418Sgblack@eecs.umich.edu# assume that we're using the builtin malloc and friends. These flags 5107418Sgblack@eecs.umich.edu# are compiler-specific, so we need to set them after we detect which 5117418Sgblack@eecs.umich.edu# compiler we're using. 5127418Sgblack@eecs.umich.edumain['TCMALLOC_CCFLAGS'] = [] 5137418Sgblack@eecs.umich.edu 5147418Sgblack@eecs.umich.eduCXX_version = readCommand([main['CXX'],'--version'], exception=False) 5157418Sgblack@eecs.umich.eduCXX_V = readCommand([main['CXX'],'-V'], exception=False) 5167418Sgblack@eecs.umich.edu 5177418Sgblack@eecs.umich.edumain['GCC'] = CXX_version and CXX_version.find('g++') >= 0 5187418Sgblack@eecs.umich.edumain['CLANG'] = CXX_version and CXX_version.find('clang') >= 0 5197418Sgblack@eecs.umich.eduif main['GCC'] + main['CLANG'] > 1: 5207418Sgblack@eecs.umich.edu print 'Error: How can we have two at the same time?' 5217418Sgblack@eecs.umich.edu Exit(1) 5227418Sgblack@eecs.umich.edu 5237418Sgblack@eecs.umich.edu# Set up default C++ compiler flags 5247418Sgblack@eecs.umich.eduif main['GCC'] or main['CLANG']: 5257418Sgblack@eecs.umich.edu # As gcc and clang share many flags, do the common parts here 5267418Sgblack@eecs.umich.edu main.Append(CCFLAGS=['-pipe']) 5277418Sgblack@eecs.umich.edu main.Append(CCFLAGS=['-fno-strict-aliasing']) 5287648SAli.Saidi@ARM.com # Enable -Wall and then disable the few warnings that we 5297418Sgblack@eecs.umich.edu # consistently violate 5307418Sgblack@eecs.umich.edu main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef']) 5317418Sgblack@eecs.umich.edu # We always compile using C++11, but only gcc >= 4.7 and clang 3.1 5327418Sgblack@eecs.umich.edu # actually use that name, so we stick with c++0x 5337408Sgblack@eecs.umich.edu main.Append(CXXFLAGS=['-std=c++0x']) 5347408Sgblack@eecs.umich.edu # Add selected sanity checks from -Wextra 5357648SAli.Saidi@ARM.com main.Append(CXXFLAGS=['-Wmissing-field-initializers', 5367648SAli.Saidi@ARM.com '-Woverloaded-virtual']) 5377408Sgblack@eecs.umich.eduelse: 5387408Sgblack@eecs.umich.edu print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 5397408Sgblack@eecs.umich.edu print "Don't know what compiler options to use for your compiler." 5407409Sgblack@eecs.umich.edu print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 5417409Sgblack@eecs.umich.edu print termcap.Yellow + ' version:' + termcap.Normal, 5427409Sgblack@eecs.umich.edu if not CXX_version: 5437409Sgblack@eecs.umich.edu print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 5447409Sgblack@eecs.umich.edu termcap.Normal 5457409Sgblack@eecs.umich.edu else: 5467409Sgblack@eecs.umich.edu print CXX_version.replace('\n', '<nl>') 5477409Sgblack@eecs.umich.edu print " If you're trying to use a compiler other than GCC" 5487409Sgblack@eecs.umich.edu print " or clang, there appears to be something wrong with your" 5497409Sgblack@eecs.umich.edu print " environment." 5507409Sgblack@eecs.umich.edu print " " 5517409Sgblack@eecs.umich.edu print " If you are trying to use a compiler other than those listed" 5527409Sgblack@eecs.umich.edu print " above you will need to ease fix SConstruct and " 5537254Sgblack@eecs.umich.edu print " src/SConscript to support that compiler." 5547254Sgblack@eecs.umich.edu Exit(1) 5557254Sgblack@eecs.umich.edu 5567254Sgblack@eecs.umich.eduif main['GCC']: 5577254Sgblack@eecs.umich.edu # Check for a supported version of gcc, >= 4.4 is needed for c++0x 5587254Sgblack@eecs.umich.edu # support. See http://gcc.gnu.org/projects/cxx0x.html for details 5597254Sgblack@eecs.umich.edu gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 5607254Sgblack@eecs.umich.edu if compareVersions(gcc_version, "4.4") < 0: 5617254Sgblack@eecs.umich.edu print 'Error: gcc version 4.4 or newer required.' 5627254Sgblack@eecs.umich.edu print ' Installed version:', gcc_version 5637254Sgblack@eecs.umich.edu Exit(1) 5647254Sgblack@eecs.umich.edu 5657254Sgblack@eecs.umich.edu main['GCC_VERSION'] = gcc_version 5667254Sgblack@eecs.umich.edu 5677254Sgblack@eecs.umich.edu # Check for versions with bugs 5687254Sgblack@eecs.umich.edu if not compareVersions(gcc_version, '4.4.1') or \ 5697254Sgblack@eecs.umich.edu not compareVersions(gcc_version, '4.4.2'): 5707254Sgblack@eecs.umich.edu print 'Info: Tree vectorizer in GCC 4.4.1 & 4.4.2 is buggy, disabling.' 5717254Sgblack@eecs.umich.edu main.Append(CCFLAGS=['-fno-tree-vectorize']) 5727254Sgblack@eecs.umich.edu 5737254Sgblack@eecs.umich.edu # LTO support is only really working properly from 4.6 and beyond 5747257Sgblack@eecs.umich.edu if compareVersions(gcc_version, '4.6') >= 0: 5757257Sgblack@eecs.umich.edu # Add the appropriate Link-Time Optimization (LTO) flags 5767257Sgblack@eecs.umich.edu # unless LTO is explicitly turned off. Note that these flags 5777257Sgblack@eecs.umich.edu # are only used by the fast target. 5787257Sgblack@eecs.umich.edu if not GetOption('no_lto'): 5797257Sgblack@eecs.umich.edu # Pass the LTO flag when compiling to produce GIMPLE 5807257Sgblack@eecs.umich.edu # output, we merely create the flags here and only append 5817257Sgblack@eecs.umich.edu # them later/ 5827257Sgblack@eecs.umich.edu main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 5837257Sgblack@eecs.umich.edu 5847257Sgblack@eecs.umich.edu # Use the same amount of jobs for LTO as we are running 5857257Sgblack@eecs.umich.edu # scons with, we hardcode the use of the linker plugin 5867257Sgblack@eecs.umich.edu # which requires either gold or GNU ld >= 2.21 5877257Sgblack@eecs.umich.edu main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs'), 5887257Sgblack@eecs.umich.edu '-fuse-linker-plugin'] 5897257Sgblack@eecs.umich.edu 5907257Sgblack@eecs.umich.edu main.Append(TCMALLOC_CCFLAGS=['-fno-builtin-malloc', '-fno-builtin-calloc', 5917257Sgblack@eecs.umich.edu '-fno-builtin-realloc', '-fno-builtin-free']) 5927257Sgblack@eecs.umich.edu 5937257Sgblack@eecs.umich.eduelif main['CLANG']: 5947257Sgblack@eecs.umich.edu # Check for a supported version of clang, >= 2.9 is needed to 5957262Sgblack@eecs.umich.edu # support similar features as gcc 4.4. See 5967347SAli.Saidi@ARM.com # http://clang.llvm.org/cxx_status.html for details 5977347SAli.Saidi@ARM.com clang_version_re = re.compile(".* version (\d+\.\d+)") 5987347SAli.Saidi@ARM.com clang_version_match = clang_version_re.match(CXX_version) 5997347SAli.Saidi@ARM.com if (clang_version_match): 6007347SAli.Saidi@ARM.com clang_version = clang_version_match.groups()[0] 6017347SAli.Saidi@ARM.com if compareVersions(clang_version, "2.9") < 0: 6027347SAli.Saidi@ARM.com print 'Error: clang version 2.9 or newer required.' 6037347SAli.Saidi@ARM.com print ' Installed version:', clang_version 6047347SAli.Saidi@ARM.com Exit(1) 6057347SAli.Saidi@ARM.com else: 6067347SAli.Saidi@ARM.com print 'Error: Unable to determine clang version.' 6077262Sgblack@eecs.umich.edu Exit(1) 6087347SAli.Saidi@ARM.com 6097262Sgblack@eecs.umich.edu # clang has a few additional warnings that we disable, 6107262Sgblack@eecs.umich.edu # tautological comparisons are allowed due to unsigned integers 6117262Sgblack@eecs.umich.edu # being compared to constants that happen to be 0, and extraneous 6127262Sgblack@eecs.umich.edu # parantheses are allowed due to Ruby's printing of the AST, 6137262Sgblack@eecs.umich.edu # finally self assignments are allowed as the generated CPU code 6147347SAli.Saidi@ARM.com # is relying on this 6157347SAli.Saidi@ARM.com main.Append(CCFLAGS=['-Wno-tautological-compare', 6167347SAli.Saidi@ARM.com '-Wno-parentheses', 6177347SAli.Saidi@ARM.com '-Wno-self-assign']) 6187347SAli.Saidi@ARM.com 6197347SAli.Saidi@ARM.com main.Append(TCMALLOC_CCFLAGS=['-fno-builtin']) 6207347SAli.Saidi@ARM.com 6217347SAli.Saidi@ARM.com # On Mac OS X/Darwin we need to also use libc++ (part of XCode) as 6227347SAli.Saidi@ARM.com # opposed to libstdc++ to make the transition from TR1 to 6237347SAli.Saidi@ARM.com # C++11. See http://libcxx.llvm.org. However, clang has chosen a 6247347SAli.Saidi@ARM.com # strict implementation of the C++11 standard, and does not allow 6257262Sgblack@eecs.umich.edu # incomplete types in template arguments (besides unique_ptr and 6267347SAli.Saidi@ARM.com # shared_ptr), and the libc++ STL containers create problems in 6277599Sminkyu.jeong@arm.com # combination with the current gem5 code. For now, we stick with 6287599Sminkyu.jeong@arm.com # libstdc++ and use the TR1 namespace. 6297262Sgblack@eecs.umich.edu # if sys.platform == "darwin": 6307262Sgblack@eecs.umich.edu # main.Append(CXXFLAGS=['-stdlib=libc++']) 6317262Sgblack@eecs.umich.edu 6327283Sgblack@eecs.umich.eduelse: 6337420Sgblack@eecs.umich.edu print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 6347420Sgblack@eecs.umich.edu print "Don't know what compiler options to use for your compiler." 6357420Sgblack@eecs.umich.edu print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 6367420Sgblack@eecs.umich.edu print termcap.Yellow + ' version:' + termcap.Normal, 6377420Sgblack@eecs.umich.edu if not CXX_version: 6387420Sgblack@eecs.umich.edu print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 6397420Sgblack@eecs.umich.edu termcap.Normal 6407420Sgblack@eecs.umich.edu else: 6417420Sgblack@eecs.umich.edu print CXX_version.replace('\n', '<nl>') 6427599Sminkyu.jeong@arm.com print " If you're trying to use a compiler other than GCC" 6437599Sminkyu.jeong@arm.com print " or clang, there appears to be something wrong with your" 6447420Sgblack@eecs.umich.edu print " environment." 6457420Sgblack@eecs.umich.edu print " " 6467420Sgblack@eecs.umich.edu print " If you are trying to use a compiler other than those listed" 6477420Sgblack@eecs.umich.edu print " above you will need to ease fix SConstruct and " 6487283Sgblack@eecs.umich.edu print " src/SConscript to support that compiler." 6497797Sgblack@eecs.umich.edu Exit(1) 6507797Sgblack@eecs.umich.edu 6517283Sgblack@eecs.umich.edu# Set up common yacc/bison flags (needed for Ruby) 6527283Sgblack@eecs.umich.edumain['YACCFLAGS'] = '-d' 6537283Sgblack@eecs.umich.edumain['YACCHXXFILESUFFIX'] = '.hh' 6547283Sgblack@eecs.umich.edu 6557283Sgblack@eecs.umich.edu# Do this after we save setting back, or else we'll tack on an 6567283Sgblack@eecs.umich.edu# extra 'qdo' every time we run scons. 6577283Sgblack@eecs.umich.eduif main['BATCH']: 6587283Sgblack@eecs.umich.edu main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 6597283Sgblack@eecs.umich.edu main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 6607797Sgblack@eecs.umich.edu main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 6617797Sgblack@eecs.umich.edu main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 6627283Sgblack@eecs.umich.edu main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 6637283Sgblack@eecs.umich.edu 6647283Sgblack@eecs.umich.eduif sys.platform == 'cygwin': 6657283Sgblack@eecs.umich.edu # cygwin has some header file issues... 6667283Sgblack@eecs.umich.edu main.Append(CCFLAGS=["-Wno-uninitialized"]) 6677283Sgblack@eecs.umich.edu 6687283Sgblack@eecs.umich.edu# Check for the protobuf compiler 6697307Sgblack@eecs.umich.eduprotoc_version = readCommand([main['PROTOC'], '--version'], 6707307Sgblack@eecs.umich.edu exception='').split() 6717307Sgblack@eecs.umich.edu 6727307Sgblack@eecs.umich.edu# First two words should be "libprotoc x.y.z" 6737307Sgblack@eecs.umich.eduif len(protoc_version) < 2 or protoc_version[0] != 'libprotoc': 6747307Sgblack@eecs.umich.edu print termcap.Yellow + termcap.Bold + \ 6757307Sgblack@eecs.umich.edu 'Warning: Protocol buffer compiler (protoc) not found.\n' + \ 6767307Sgblack@eecs.umich.edu ' Please install protobuf-compiler for tracing support.' + \ 6777648SAli.Saidi@ARM.com termcap.Normal 6787648SAli.Saidi@ARM.com main['PROTOC'] = False 6797307Sgblack@eecs.umich.eduelse: 6807307Sgblack@eecs.umich.edu # Based on the availability of the compress stream wrappers, 6817307Sgblack@eecs.umich.edu # require 2.1.0 6827315Sgblack@eecs.umich.edu min_protoc_version = '2.1.0' 6837603SGene.Wu@arm.com if compareVersions(protoc_version[1], min_protoc_version) < 0: 6847705Sgblack@eecs.umich.edu print termcap.Yellow + termcap.Bold + \ 6857705Sgblack@eecs.umich.edu 'Warning: protoc version', min_protoc_version, \ 6867603SGene.Wu@arm.com 'or newer required.\n' + \ 6877603SGene.Wu@arm.com ' Installed version:', protoc_version[1], \ 6887603SGene.Wu@arm.com termcap.Normal 6897603SGene.Wu@arm.com main['PROTOC'] = False 6907603SGene.Wu@arm.com else: 6917609SGene.Wu@arm.com # Attempt to determine the appropriate include path and 6927603SGene.Wu@arm.com # library path using pkg-config, that means we also need to 6937603SGene.Wu@arm.com # check for pkg-config. Note that it is possible to use 6947609SGene.Wu@arm.com # protobuf without the involvement of pkg-config. Later on we 6957609SGene.Wu@arm.com # check go a library config check and at that point the test 6967603SGene.Wu@arm.com # will fail if libprotobuf cannot be found. 6977605SGene.Wu@arm.com if readCommand(['pkg-config', '--version'], exception=''): 6987605SGene.Wu@arm.com try: 6997605SGene.Wu@arm.com # Attempt to establish what linking flags to add for protobuf 7007605SGene.Wu@arm.com # using pkg-config 7017605SGene.Wu@arm.com main.ParseConfig('pkg-config --cflags --libs-only-L protobuf') 7027605SGene.Wu@arm.com except: 7037605SGene.Wu@arm.com print termcap.Yellow + termcap.Bold + \ 7047605SGene.Wu@arm.com 'Warning: pkg-config could not get protobuf flags.' + \ 7057605SGene.Wu@arm.com termcap.Normal 7067605SGene.Wu@arm.com 7077605SGene.Wu@arm.com# Check for SWIG 7087605SGene.Wu@arm.comif not main.has_key('SWIG'): 7097605SGene.Wu@arm.com print 'Error: SWIG utility not found.' 7107605SGene.Wu@arm.com print ' Please install (see http://www.swig.org) and retry.' 7117605SGene.Wu@arm.com Exit(1) 7127605SGene.Wu@arm.com 7137605SGene.Wu@arm.com# Check for appropriate SWIG version 7147605SGene.Wu@arm.comswig_version = readCommand([main['SWIG'], '-version'], exception='').split() 7157605SGene.Wu@arm.com# First 3 words should be "SWIG Version x.y.z" 7167605SGene.Wu@arm.comif len(swig_version) < 3 or \ 7177605SGene.Wu@arm.com swig_version[0] != 'SWIG' or swig_version[1] != 'Version': 7187605SGene.Wu@arm.com print 'Error determining SWIG version.' 7197605SGene.Wu@arm.com Exit(1) 7207605SGene.Wu@arm.com 7217605SGene.Wu@arm.commin_swig_version = '1.3.34' 7227605SGene.Wu@arm.comif compareVersions(swig_version[2], min_swig_version) < 0: 7237605SGene.Wu@arm.com print 'Error: SWIG version', min_swig_version, 'or newer required.' 7247613SGene.Wu@arm.com print ' Installed version:', swig_version[2] 7257613SGene.Wu@arm.com Exit(1) 7267613SGene.Wu@arm.com 7277613SGene.Wu@arm.comif swig_version[2] == "2.0.9": 7287613SGene.Wu@arm.com print '\n' + termcap.Yellow + termcap.Bold + \ 7297613SGene.Wu@arm.com 'Warning: SWIG version 2.0.9 sometimes generates broken code.\n' + \ 7307613SGene.Wu@arm.com termcap.Normal + \ 7317613SGene.Wu@arm.com 'This problem only affects some platforms and some Python\n' + \ 7327613SGene.Wu@arm.com 'versions. See the following SWIG bug report for details:\n' + \ 7337315Sgblack@eecs.umich.edu 'http://sourceforge.net/p/swig/bugs/1297/\n' 7347315Sgblack@eecs.umich.edu 7357315Sgblack@eecs.umich.edu 7367315Sgblack@eecs.umich.edu# Set up SWIG flags & scanner 7377315Sgblack@eecs.umich.eduswig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS') 7387315Sgblack@eecs.umich.edumain.Append(SWIGFLAGS=swig_flags) 7397315Sgblack@eecs.umich.edu 7407315Sgblack@eecs.umich.edu# filter out all existing swig scanners, they mess up the dependency 7417400SAli.Saidi@ARM.com# stuff for some reason 7427315Sgblack@eecs.umich.eduscanners = [] 7437315Sgblack@eecs.umich.edufor scanner in main['SCANNERS']: 7447315Sgblack@eecs.umich.edu skeys = scanner.skeys 7457315Sgblack@eecs.umich.edu if skeys == '.i': 7467315Sgblack@eecs.umich.edu continue 7477315Sgblack@eecs.umich.edu 7487400SAli.Saidi@ARM.com if isinstance(skeys, (list, tuple)) and '.i' in skeys: 7497315Sgblack@eecs.umich.edu continue 7507315Sgblack@eecs.umich.edu 7517315Sgblack@eecs.umich.edu scanners.append(scanner) 7527315Sgblack@eecs.umich.edu 7537315Sgblack@eecs.umich.edu# add the new swig scanner that we like better 7547315Sgblack@eecs.umich.edufrom SCons.Scanner import ClassicCPP as CPPScanner 7557315Sgblack@eecs.umich.eduswig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")' 7567315Sgblack@eecs.umich.eduscanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re)) 7577315Sgblack@eecs.umich.edu 7587315Sgblack@eecs.umich.edu# replace the scanners list that has what we want 7597315Sgblack@eecs.umich.edumain['SCANNERS'] = scanners 7607599Sminkyu.jeong@arm.com 7617599Sminkyu.jeong@arm.com# Add a custom Check function to the Configure context so that we can 7627315Sgblack@eecs.umich.edu# figure out if the compiler adds leading underscores to global 7637315Sgblack@eecs.umich.edu# variables. This is needed for the autogenerated asm files that we 7647315Sgblack@eecs.umich.edu# use for embedding the python code. 7657202Sgblack@eecs.umich.edudef CheckLeading(context): 766 context.Message("Checking for leading underscore in global variables...") 767 # 1) Define a global variable called x from asm so the C compiler 768 # won't change the symbol at all. 769 # 2) Declare that variable. 770 # 3) Use the variable 771 # 772 # If the compiler prepends an underscore, this will successfully 773 # link because the external symbol 'x' will be called '_x' which 774 # was defined by the asm statement. If the compiler does not 775 # prepend an underscore, this will not successfully link because 776 # '_x' will have been defined by assembly, while the C portion of 777 # the code will be trying to use 'x' 778 ret = context.TryLink(''' 779 asm(".globl _x; _x: .byte 0"); 780 extern int x; 781 int main() { return x; } 782 ''', extension=".c") 783 context.env.Append(LEADING_UNDERSCORE=ret) 784 context.Result(ret) 785 return ret 786 787# Platform-specific configuration. Note again that we assume that all 788# builds under a given build root run on the same host platform. 789conf = Configure(main, 790 conf_dir = joinpath(build_root, '.scons_config'), 791 log_file = joinpath(build_root, 'scons_config.log'), 792 custom_tests = { 'CheckLeading' : CheckLeading }) 793 794# Check for leading underscores. Don't really need to worry either 795# way so don't need to check the return code. 796conf.CheckLeading() 797 798# Check if we should compile a 64 bit binary on Mac OS X/Darwin 799try: 800 import platform 801 uname = platform.uname() 802 if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0: 803 if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]): 804 main.Append(CCFLAGS=['-arch', 'x86_64']) 805 main.Append(CFLAGS=['-arch', 'x86_64']) 806 main.Append(LINKFLAGS=['-arch', 'x86_64']) 807 main.Append(ASFLAGS=['-arch', 'x86_64']) 808except: 809 pass 810 811# Recent versions of scons substitute a "Null" object for Configure() 812# when configuration isn't necessary, e.g., if the "--help" option is 813# present. Unfortuantely this Null object always returns false, 814# breaking all our configuration checks. We replace it with our own 815# more optimistic null object that returns True instead. 816if not conf: 817 def NullCheck(*args, **kwargs): 818 return True 819 820 class NullConf: 821 def __init__(self, env): 822 self.env = env 823 def Finish(self): 824 return self.env 825 def __getattr__(self, mname): 826 return NullCheck 827 828 conf = NullConf(main) 829 830# Find Python include and library directories for embedding the 831# interpreter. For consistency, we will use the same Python 832# installation used to run scons (and thus this script). If you want 833# to link in an alternate version, see above for instructions on how 834# to invoke scons with a different copy of the Python interpreter. 835from distutils import sysconfig 836 837py_getvar = sysconfig.get_config_var 838 839py_debug = getattr(sys, 'pydebug', False) 840py_version = 'python' + py_getvar('VERSION') + (py_debug and "_d" or "") 841 842py_general_include = sysconfig.get_python_inc() 843py_platform_include = sysconfig.get_python_inc(plat_specific=True) 844py_includes = [ py_general_include ] 845if py_platform_include != py_general_include: 846 py_includes.append(py_platform_include) 847 848py_lib_path = [ py_getvar('LIBDIR') ] 849# add the prefix/lib/pythonX.Y/config dir, but only if there is no 850# shared library in prefix/lib/. 851if not py_getvar('Py_ENABLE_SHARED'): 852 py_lib_path.append(py_getvar('LIBPL')) 853 # Python requires the flags in LINKFORSHARED to be added the 854 # linker flags when linking with a statically with Python. Failing 855 # to do so can lead to errors from the Python's dynamic module 856 # loader at start up. 857 main.Append(LINKFLAGS=[py_getvar('LINKFORSHARED').split()]) 858 859py_libs = [] 860for lib in py_getvar('LIBS').split() + py_getvar('SYSLIBS').split(): 861 if not lib.startswith('-l'): 862 # Python requires some special flags to link (e.g. -framework 863 # common on OS X systems), assume appending preserves order 864 main.Append(LINKFLAGS=[lib]) 865 else: 866 lib = lib[2:] 867 if lib not in py_libs: 868 py_libs.append(lib) 869py_libs.append(py_version) 870 871main.Append(CPPPATH=py_includes) 872main.Append(LIBPATH=py_lib_path) 873 874# Cache build files in the supplied directory. 875if main['M5_BUILD_CACHE']: 876 print 'Using build cache located at', main['M5_BUILD_CACHE'] 877 CacheDir(main['M5_BUILD_CACHE']) 878 879 880# verify that this stuff works 881if not conf.CheckHeader('Python.h', '<>'): 882 print "Error: can't find Python.h header in", py_includes 883 print "Install Python headers (package python-dev on Ubuntu and RedHat)" 884 Exit(1) 885 886for lib in py_libs: 887 if not conf.CheckLib(lib): 888 print "Error: can't find library %s required by python" % lib 889 Exit(1) 890 891# On Solaris you need to use libsocket for socket ops 892if not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 893 if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 894 print "Can't find library with socket calls (e.g. accept())" 895 Exit(1) 896 897# Check for zlib. If the check passes, libz will be automatically 898# added to the LIBS environment variable. 899if not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 900 print 'Error: did not find needed zlib compression library '\ 901 'and/or zlib.h header file.' 902 print ' Please install zlib and try again.' 903 Exit(1) 904 905# If we have the protobuf compiler, also make sure we have the 906# development libraries. If the check passes, libprotobuf will be 907# automatically added to the LIBS environment variable. After 908# this, we can use the HAVE_PROTOBUF flag to determine if we have 909# got both protoc and libprotobuf available. 910main['HAVE_PROTOBUF'] = main['PROTOC'] and \ 911 conf.CheckLibWithHeader('protobuf', 'google/protobuf/message.h', 912 'C++', 'GOOGLE_PROTOBUF_VERIFY_VERSION;') 913 914# If we have the compiler but not the library, print another warning. 915if main['PROTOC'] and not main['HAVE_PROTOBUF']: 916 print termcap.Yellow + termcap.Bold + \ 917 'Warning: did not find protocol buffer library and/or headers.\n' + \ 918 ' Please install libprotobuf-dev for tracing support.' + \ 919 termcap.Normal 920 921# Check for librt. 922have_posix_clock = \ 923 conf.CheckLibWithHeader(None, 'time.h', 'C', 924 'clock_nanosleep(0,0,NULL,NULL);') or \ 925 conf.CheckLibWithHeader('rt', 'time.h', 'C', 926 'clock_nanosleep(0,0,NULL,NULL);') 927 928if conf.CheckLib('tcmalloc_minimal'): 929 main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS']) 930else: 931 print termcap.Yellow + termcap.Bold + \ 932 "You can get a 12% performance improvement by installing tcmalloc "\ 933 "(libgoogle-perftools-dev package on Ubuntu or RedHat)." + \ 934 termcap.Normal 935 936if not have_posix_clock: 937 print "Can't find library for POSIX clocks." 938 939# Check for <fenv.h> (C99 FP environment control) 940have_fenv = conf.CheckHeader('fenv.h', '<>') 941if not have_fenv: 942 print "Warning: Header file <fenv.h> not found." 943 print " This host has no IEEE FP rounding mode control." 944 945###################################################################### 946# 947# Finish the configuration 948# 949main = conf.Finish() 950 951###################################################################### 952# 953# Collect all non-global variables 954# 955 956# Define the universe of supported ISAs 957all_isa_list = [ ] 958Export('all_isa_list') 959 960class CpuModel(object): 961 '''The CpuModel class encapsulates everything the ISA parser needs to 962 know about a particular CPU model.''' 963 964 # Dict of available CPU model objects. Accessible as CpuModel.dict. 965 dict = {} 966 list = [] 967 defaults = [] 968 969 # Constructor. Automatically adds models to CpuModel.dict. 970 def __init__(self, name, filename, includes, strings, default=False): 971 self.name = name # name of model 972 self.filename = filename # filename for output exec code 973 self.includes = includes # include files needed in exec file 974 # The 'strings' dict holds all the per-CPU symbols we can 975 # substitute into templates etc. 976 self.strings = strings 977 978 # This cpu is enabled by default 979 self.default = default 980 981 # Add self to dict 982 if name in CpuModel.dict: 983 raise AttributeError, "CpuModel '%s' already registered" % name 984 CpuModel.dict[name] = self 985 CpuModel.list.append(name) 986 987Export('CpuModel') 988 989# Sticky variables get saved in the variables file so they persist from 990# one invocation to the next (unless overridden, in which case the new 991# value becomes sticky). 992sticky_vars = Variables(args=ARGUMENTS) 993Export('sticky_vars') 994 995# Sticky variables that should be exported 996export_vars = [] 997Export('export_vars') 998 999# For Ruby 1000all_protocols = [] 1001Export('all_protocols') 1002protocol_dirs = [] 1003Export('protocol_dirs') 1004slicc_includes = [] 1005Export('slicc_includes') 1006 1007# Walk the tree and execute all SConsopts scripts that wil add to the 1008# above variables 1009if not GetOption('verbose'): 1010 print "Reading SConsopts" 1011for bdir in [ base_dir ] + extras_dir_list: 1012 if not isdir(bdir): 1013 print "Error: directory '%s' does not exist" % bdir 1014 Exit(1) 1015 for root, dirs, files in os.walk(bdir): 1016 if 'SConsopts' in files: 1017 if GetOption('verbose'): 1018 print "Reading", joinpath(root, 'SConsopts') 1019 SConscript(joinpath(root, 'SConsopts')) 1020 1021all_isa_list.sort() 1022 1023sticky_vars.AddVariables( 1024 EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 1025 ListVariable('CPU_MODELS', 'CPU models', 1026 sorted(n for n,m in CpuModel.dict.iteritems() if m.default), 1027 sorted(CpuModel.list)), 1028 BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 1029 False), 1030 BoolVariable('SS_COMPATIBLE_FP', 1031 'Make floating-point results compatible with SimpleScalar', 1032 False), 1033 BoolVariable('USE_SSE2', 1034 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 1035 False), 1036 BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), 1037 BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 1038 BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False), 1039 EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None', 1040 all_protocols), 1041 ) 1042 1043# These variables get exported to #defines in config/*.hh (see src/SConscript). 1044export_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 'TARGET_ISA', 'CP_ANNOTATE', 1045 'USE_POSIX_CLOCK', 'PROTOCOL', 'HAVE_PROTOBUF'] 1046 1047################################################### 1048# 1049# Define a SCons builder for configuration flag headers. 1050# 1051################################################### 1052 1053# This function generates a config header file that #defines the 1054# variable symbol to the current variable setting (0 or 1). The source 1055# operands are the name of the variable and a Value node containing the 1056# value of the variable. 1057def build_config_file(target, source, env): 1058 (variable, value) = [s.get_contents() for s in source] 1059 f = file(str(target[0]), 'w') 1060 print >> f, '#define', variable, value 1061 f.close() 1062 return None 1063 1064# Combine the two functions into a scons Action object. 1065config_action = MakeAction(build_config_file, Transform("CONFIG H", 2)) 1066 1067# The emitter munges the source & target node lists to reflect what 1068# we're really doing. 1069def config_emitter(target, source, env): 1070 # extract variable name from Builder arg 1071 variable = str(target[0]) 1072 # True target is config header file 1073 target = joinpath('config', variable.lower() + '.hh') 1074 val = env[variable] 1075 if isinstance(val, bool): 1076 # Force value to 0/1 1077 val = int(val) 1078 elif isinstance(val, str): 1079 val = '"' + val + '"' 1080 1081 # Sources are variable name & value (packaged in SCons Value nodes) 1082 return ([target], [Value(variable), Value(val)]) 1083 1084config_builder = Builder(emitter = config_emitter, action = config_action) 1085 1086main.Append(BUILDERS = { 'ConfigFile' : config_builder }) 1087 1088# libelf build is shared across all configs in the build root. 1089main.SConscript('ext/libelf/SConscript', 1090 variant_dir = joinpath(build_root, 'libelf')) 1091 1092# gzstream build is shared across all configs in the build root. 1093main.SConscript('ext/gzstream/SConscript', 1094 variant_dir = joinpath(build_root, 'gzstream')) 1095 1096# libfdt build is shared across all configs in the build root. 1097main.SConscript('ext/libfdt/SConscript', 1098 variant_dir = joinpath(build_root, 'libfdt')) 1099 1100################################################### 1101# 1102# This function is used to set up a directory with switching headers 1103# 1104################################################### 1105 1106main['ALL_ISA_LIST'] = all_isa_list 1107def make_switching_dir(dname, switch_headers, env): 1108 # Generate the header. target[0] is the full path of the output 1109 # header to generate. 'source' is a dummy variable, since we get the 1110 # list of ISAs from env['ALL_ISA_LIST']. 1111 def gen_switch_hdr(target, source, env): 1112 fname = str(target[0]) 1113 f = open(fname, 'w') 1114 isa = env['TARGET_ISA'].lower() 1115 print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname)) 1116 f.close() 1117 1118 # Build SCons Action object. 'varlist' specifies env vars that this 1119 # action depends on; when env['ALL_ISA_LIST'] changes these actions 1120 # should get re-executed. 1121 switch_hdr_action = MakeAction(gen_switch_hdr, 1122 Transform("GENERATE"), varlist=['ALL_ISA_LIST']) 1123 1124 # Instantiate actions for each header 1125 for hdr in switch_headers: 1126 env.Command(hdr, [], switch_hdr_action) 1127Export('make_switching_dir') 1128 1129################################################### 1130# 1131# Define build environments for selected configurations. 1132# 1133################################################### 1134 1135for variant_path in variant_paths: 1136 print "Building in", variant_path 1137 1138 # Make a copy of the build-root environment to use for this config. 1139 env = main.Clone() 1140 env['BUILDDIR'] = variant_path 1141 1142 # variant_dir is the tail component of build path, and is used to 1143 # determine the build parameters (e.g., 'ALPHA_SE') 1144 (build_root, variant_dir) = splitpath(variant_path) 1145 1146 # Set env variables according to the build directory config. 1147 sticky_vars.files = [] 1148 # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 1149 # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 1150 # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 1151 current_vars_file = joinpath(build_root, 'variables', variant_dir) 1152 if isfile(current_vars_file): 1153 sticky_vars.files.append(current_vars_file) 1154 print "Using saved variables file %s" % current_vars_file 1155 else: 1156 # Build dir-specific variables file doesn't exist. 1157 1158 # Make sure the directory is there so we can create it later 1159 opt_dir = dirname(current_vars_file) 1160 if not isdir(opt_dir): 1161 mkdir(opt_dir) 1162 1163 # Get default build variables from source tree. Variables are 1164 # normally determined by name of $VARIANT_DIR, but can be 1165 # overridden by '--default=' arg on command line. 1166 default = GetOption('default') 1167 opts_dir = joinpath(main.root.abspath, 'build_opts') 1168 if default: 1169 default_vars_files = [joinpath(build_root, 'variables', default), 1170 joinpath(opts_dir, default)] 1171 else: 1172 default_vars_files = [joinpath(opts_dir, variant_dir)] 1173 existing_files = filter(isfile, default_vars_files) 1174 if existing_files: 1175 default_vars_file = existing_files[0] 1176 sticky_vars.files.append(default_vars_file) 1177 print "Variables file %s not found,\n using defaults in %s" \ 1178 % (current_vars_file, default_vars_file) 1179 else: 1180 print "Error: cannot find variables file %s or " \ 1181 "default file(s) %s" \ 1182 % (current_vars_file, ' or '.join(default_vars_files)) 1183 Exit(1) 1184 1185 # Apply current variable settings to env 1186 sticky_vars.Update(env) 1187 1188 help_texts["local_vars"] += \ 1189 "Build variables for %s:\n" % variant_dir \ 1190 + sticky_vars.GenerateHelpText(env) 1191 1192 # Process variable settings. 1193 1194 if not have_fenv and env['USE_FENV']: 1195 print "Warning: <fenv.h> not available; " \ 1196 "forcing USE_FENV to False in", variant_dir + "." 1197 env['USE_FENV'] = False 1198 1199 if not env['USE_FENV']: 1200 print "Warning: No IEEE FP rounding mode control in", variant_dir + "." 1201 print " FP results may deviate slightly from other platforms." 1202 1203 if env['EFENCE']: 1204 env.Append(LIBS=['efence']) 1205 1206 # Save sticky variable settings back to current variables file 1207 sticky_vars.Save(current_vars_file, env) 1208 1209 if env['USE_SSE2']: 1210 env.Append(CCFLAGS=['-msse2']) 1211 1212 # The src/SConscript file sets up the build rules in 'env' according 1213 # to the configured variables. It returns a list of environments, 1214 # one for each variant build (debug, opt, etc.) 1215 envList = SConscript('src/SConscript', variant_dir = variant_path, 1216 exports = 'env') 1217 1218 # Set up the regression tests for each build. 1219 for e in envList: 1220 SConscript('tests/SConscript', 1221 variant_dir = joinpath(variant_path, 'tests', e.Label), 1222 exports = { 'env' : e }, duplicate = False) 1223 1224# base help text 1225Help(''' 1226Usage: scons [scons options] [build variables] [target(s)] 1227 1228Extra scons options: 1229%(options)s 1230 1231Global build variables: 1232%(global_vars)s 1233 1234%(local_vars)s 1235''' % help_texts) 1236