SConstruct revision 9552:460cf901acba
1955SN/A# -*- mode:python -*- 2955SN/A 31762SN/A# Copyright (c) 2011 Advanced Micro Devices, Inc. 4955SN/A# Copyright (c) 2009 The Hewlett-Packard Development Company 5955SN/A# Copyright (c) 2004-2005 The Regents of The University of Michigan 6955SN/A# All rights reserved. 7955SN/A# 8955SN/A# Redistribution and use in source and binary forms, with or without 9955SN/A# modification, are permitted provided that the following conditions are 10955SN/A# met: redistributions of source code must retain the above copyright 11955SN/A# notice, this list of conditions and the following disclaimer; 12955SN/A# redistributions in binary form must reproduce the above copyright 13955SN/A# notice, this list of conditions and the following disclaimer in the 14955SN/A# documentation and/or other materials provided with the distribution; 15955SN/A# neither the name of the copyright holders nor the names of its 16955SN/A# contributors may be used to endorse or promote products derived from 17955SN/A# this software without specific prior written permission. 18955SN/A# 19955SN/A# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20955SN/A# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21955SN/A# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22955SN/A# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23955SN/A# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24955SN/A# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25955SN/A# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26955SN/A# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27955SN/A# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 282665Ssaidi@eecs.umich.edu# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 294762Snate@binkert.org# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30955SN/A# 315522Snate@binkert.org# Authors: Steve Reinhardt 326143Snate@binkert.org# Nathan Binkert 334762Snate@binkert.org 345522Snate@binkert.org################################################### 35955SN/A# 365522Snate@binkert.org# SCons top-level build description (SConstruct) file. 37955SN/A# 385522Snate@binkert.org# While in this directory ('gem5'), just type 'scons' to build the default 394202Sbinkertn@umich.edu# configuration (see below), or type 'scons build/<CONFIG>/<binary>' 405742Snate@binkert.org# to build some other configuration (e.g., 'build/ALPHA/gem5.opt' for 41955SN/A# the optimized full-system version). 424381Sbinkertn@umich.edu# 434381Sbinkertn@umich.edu# You can build gem5 in a different directory as long as there is a 44955SN/A# 'build/<CONFIG>' somewhere along the target path. The build system 45955SN/A# expects that all configs under the same build directory are being 46955SN/A# built for the same host system. 474202Sbinkertn@umich.edu# 48955SN/A# Examples: 494382Sbinkertn@umich.edu# 504382Sbinkertn@umich.edu# The following two commands are equivalent. The '-u' option tells 514382Sbinkertn@umich.edu# scons to search up the directory tree for this SConstruct file. 526654Snate@binkert.org# % cd <path-to-src>/gem5 ; scons build/ALPHA/gem5.debug 535517Snate@binkert.org# % cd <path-to-src>/gem5/build/ALPHA; scons -u gem5.debug 547674Snate@binkert.org# 557674Snate@binkert.org# The following two commands are equivalent and demonstrate building 566143Snate@binkert.org# in a directory outside of the source tree. The '-C' option tells 576143Snate@binkert.org# scons to chdir to the specified directory to find this SConstruct 586143Snate@binkert.org# file. 596143Snate@binkert.org# % cd <path-to-src>/gem5 ; scons /local/foo/build/ALPHA/gem5.debug 606143Snate@binkert.org# % cd /local/foo/build/ALPHA; scons -C <path-to-src>/gem5 gem5.debug 616143Snate@binkert.org# 626143Snate@binkert.org# You can use 'scons -H' to print scons options. If you're in this 636143Snate@binkert.org# 'gem5' directory (or use -u or -C to tell scons where to find this 646143Snate@binkert.org# file), you can use 'scons -h' to print all the gem5-specific build 656143Snate@binkert.org# options as well. 666143Snate@binkert.org# 676143Snate@binkert.org################################################### 686143Snate@binkert.org 696143Snate@binkert.org# Check for recent-enough Python and SCons versions. 706143Snate@binkert.orgtry: 714762Snate@binkert.org # Really old versions of scons only take two options for the 726143Snate@binkert.org # function, so check once without the revision and once with the 736143Snate@binkert.org # revision, the first instance will fail for stuff other than 746143Snate@binkert.org # 0.98, and the second will fail for 0.98.0 756143Snate@binkert.org EnsureSConsVersion(0, 98) 766143Snate@binkert.org EnsureSConsVersion(0, 98, 1) 776143Snate@binkert.orgexcept SystemExit, e: 786143Snate@binkert.org print """ 796143Snate@binkert.orgFor more details, see: 806143Snate@binkert.org http://gem5.org/Dependencies 816143Snate@binkert.org""" 826143Snate@binkert.org raise 836143Snate@binkert.org 846143Snate@binkert.org# We ensure the python version early because we have stuff that 856143Snate@binkert.org# requires python 2.4 866143Snate@binkert.orgtry: 876143Snate@binkert.org EnsurePythonVersion(2, 4) 886143Snate@binkert.orgexcept SystemExit, e: 896143Snate@binkert.org print """ 906143Snate@binkert.orgYou can use a non-default installation of the Python interpreter by 916143Snate@binkert.orgeither (1) rearranging your PATH so that scons finds the non-default 926143Snate@binkert.org'python' first or (2) explicitly invoking an alternative interpreter 937065Snate@binkert.orgon the scons script. 946143Snate@binkert.org 956143Snate@binkert.orgFor more details, see: 966143Snate@binkert.org http://gem5.org/wiki/index.php/Using_a_non-default_Python_installation 976143Snate@binkert.org""" 986143Snate@binkert.org raise 996143Snate@binkert.org 1006143Snate@binkert.org# Global Python includes 1016143Snate@binkert.orgimport os 1026143Snate@binkert.orgimport re 1036143Snate@binkert.orgimport subprocess 1046143Snate@binkert.orgimport sys 1056143Snate@binkert.org 1066143Snate@binkert.orgfrom os import mkdir, environ 1076143Snate@binkert.orgfrom os.path import abspath, basename, dirname, expanduser, normpath 1086143Snate@binkert.orgfrom os.path import exists, isdir, isfile 1096143Snate@binkert.orgfrom os.path import join as joinpath, split as splitpath 1106143Snate@binkert.org 1116143Snate@binkert.org# SCons includes 1126143Snate@binkert.orgimport SCons 1136143Snate@binkert.orgimport SCons.Node 1146143Snate@binkert.org 1155522Snate@binkert.orgextra_python_paths = [ 1166143Snate@binkert.org Dir('src/python').srcnode().abspath, # gem5 includes 1176143Snate@binkert.org Dir('ext/ply').srcnode().abspath, # ply is used by several files 1186143Snate@binkert.org ] 1196143Snate@binkert.org 1206143Snate@binkert.orgsys.path[1:1] = extra_python_paths 1216143Snate@binkert.org 1226143Snate@binkert.orgfrom m5.util import compareVersions, readCommand 1236143Snate@binkert.orgfrom m5.util.terminal import get_termcap 1246143Snate@binkert.org 1256143Snate@binkert.orghelp_texts = { 1265522Snate@binkert.org "options" : "", 1275522Snate@binkert.org "global_vars" : "", 1285522Snate@binkert.org "local_vars" : "" 1295522Snate@binkert.org} 1305604Snate@binkert.org 1315604Snate@binkert.orgExport("help_texts") 1326143Snate@binkert.org 1336143Snate@binkert.org 1344762Snate@binkert.org# There's a bug in scons in that (1) by default, the help texts from 1354762Snate@binkert.org# AddOption() are supposed to be displayed when you type 'scons -h' 1366143Snate@binkert.org# and (2) you can override the help displayed by 'scons -h' using the 1376727Ssteve.reinhardt@amd.com# Help() function, but these two features are incompatible: once 1386727Ssteve.reinhardt@amd.com# you've overridden the help text using Help(), there's no way to get 1396727Ssteve.reinhardt@amd.com# at the help texts from AddOptions. See: 1404762Snate@binkert.org# http://scons.tigris.org/issues/show_bug.cgi?id=2356 1416143Snate@binkert.org# http://scons.tigris.org/issues/show_bug.cgi?id=2611 1426143Snate@binkert.org# This hack lets us extract the help text from AddOptions and 1436143Snate@binkert.org# re-inject it via Help(). Ideally someday this bug will be fixed and 1446143Snate@binkert.org# we can just use AddOption directly. 1456727Ssteve.reinhardt@amd.comdef AddLocalOption(*args, **kwargs): 1466143Snate@binkert.org col_width = 30 1477674Snate@binkert.org 1487674Snate@binkert.org help = " " + ", ".join(args) 1495604Snate@binkert.org if "help" in kwargs: 1506143Snate@binkert.org length = len(help) 1516143Snate@binkert.org if length >= col_width: 1526143Snate@binkert.org help += "\n" + " " * col_width 1534762Snate@binkert.org else: 1546143Snate@binkert.org help += " " * (col_width - length) 1554762Snate@binkert.org help += kwargs["help"] 1564762Snate@binkert.org help_texts["options"] += help + "\n" 1574762Snate@binkert.org 1586143Snate@binkert.org AddOption(*args, **kwargs) 1596143Snate@binkert.org 1604762Snate@binkert.orgAddLocalOption('--colors', dest='use_colors', action='store_true', 1616143Snate@binkert.org help="Add color to abbreviated scons output") 1626143Snate@binkert.orgAddLocalOption('--no-colors', dest='use_colors', action='store_false', 1636143Snate@binkert.org help="Don't add color to abbreviated scons output") 1646143Snate@binkert.orgAddLocalOption('--default', dest='default', type='string', action='store', 1654762Snate@binkert.org help='Override which build_opts file to use for defaults') 1666143Snate@binkert.orgAddLocalOption('--ignore-style', dest='ignore_style', action='store_true', 1674762Snate@binkert.org help='Disable style checking hooks') 1686143Snate@binkert.orgAddLocalOption('--no-lto', dest='no_lto', action='store_true', 1694762Snate@binkert.org help='Disable Link-Time Optimization for fast') 1706143Snate@binkert.orgAddLocalOption('--update-ref', dest='update_ref', action='store_true', 1716143Snate@binkert.org help='Update test reference outputs') 1726143Snate@binkert.orgAddLocalOption('--verbose', dest='verbose', action='store_true', 1736143Snate@binkert.org help='Print full tool command lines') 1746143Snate@binkert.org 1756143Snate@binkert.orgtermcap = get_termcap(GetOption('use_colors')) 1766143Snate@binkert.org 1776143Snate@binkert.org######################################################################## 1786143Snate@binkert.org# 1796143Snate@binkert.org# Set up the main build environment. 1806143Snate@binkert.org# 1816143Snate@binkert.org######################################################################## 1826143Snate@binkert.orguse_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 183955SN/A 'LIBRARY_PATH', 'PATH', 'PKG_CONFIG_PATH', 'PYTHONPATH', 1845584Snate@binkert.org 'RANLIB', 'SWIG' ]) 1855584Snate@binkert.org 1865584Snate@binkert.orguse_prefixes = [ 1875584Snate@binkert.org "M5", # M5 configuration (e.g., path to kernels) 1886143Snate@binkert.org "DISTCC_", # distcc (distributed compiler wrapper) configuration 1896143Snate@binkert.org "CCACHE_", # ccache (caching compiler wrapper) configuration 1906143Snate@binkert.org "CCC_", # clang static analyzer configuration 1915584Snate@binkert.org ] 1924382Sbinkertn@umich.edu 1934202Sbinkertn@umich.eduuse_env = {} 1944382Sbinkertn@umich.edufor key,val in os.environ.iteritems(): 1954382Sbinkertn@umich.edu if key in use_vars or \ 1964382Sbinkertn@umich.edu any([key.startswith(prefix) for prefix in use_prefixes]): 1975584Snate@binkert.org use_env[key] = val 1984382Sbinkertn@umich.edu 1994382Sbinkertn@umich.edumain = Environment(ENV=use_env) 2004382Sbinkertn@umich.edumain.Decider('MD5-timestamp') 2015192Ssaidi@eecs.umich.edumain.root = Dir(".") # The current directory (where this file lives). 2025192Ssaidi@eecs.umich.edumain.srcdir = Dir("src") # The source directory 2035799Snate@binkert.org 2045799Snate@binkert.orgmain_dict_keys = main.Dictionary().keys() 2055799Snate@binkert.org 2065192Ssaidi@eecs.umich.edu# Check that we have a C/C++ compiler 2075799Snate@binkert.orgif not ('CC' in main_dict_keys and 'CXX' in main_dict_keys): 2085192Ssaidi@eecs.umich.edu print "No C++ compiler installed (package g++ on Ubuntu and RedHat)" 2095799Snate@binkert.org Exit(1) 2105799Snate@binkert.org 2115192Ssaidi@eecs.umich.edu# Check that swig is present 2125192Ssaidi@eecs.umich.eduif not 'SWIG' in main_dict_keys: 2135192Ssaidi@eecs.umich.edu print "swig is not installed (package swig on Ubuntu and RedHat)" 2145799Snate@binkert.org Exit(1) 2155192Ssaidi@eecs.umich.edu 2165192Ssaidi@eecs.umich.edu# add useful python code PYTHONPATH so it can be used by subprocesses 2175192Ssaidi@eecs.umich.edu# as well 2185192Ssaidi@eecs.umich.edumain.AppendENVPath('PYTHONPATH', extra_python_paths) 2195192Ssaidi@eecs.umich.edu 2205192Ssaidi@eecs.umich.edu######################################################################## 2214382Sbinkertn@umich.edu# 2224382Sbinkertn@umich.edu# Mercurial Stuff. 2234382Sbinkertn@umich.edu# 2242667Sstever@eecs.umich.edu# If the gem5 directory is a mercurial repository, we should do some 2252667Sstever@eecs.umich.edu# extra things. 2262667Sstever@eecs.umich.edu# 2272667Sstever@eecs.umich.edu######################################################################## 2282667Sstever@eecs.umich.edu 2292667Sstever@eecs.umich.eduhgdir = main.root.Dir(".hg") 2305742Snate@binkert.org 2315742Snate@binkert.orgmercurial_style_message = """ 2325742Snate@binkert.orgYou're missing the gem5 style hook, which automatically checks your code 2335793Snate@binkert.orgagainst the gem5 style rules on hg commit and qrefresh commands. This 2345793Snate@binkert.orgscript will now install the hook in your .hg/hgrc file. 2355793Snate@binkert.orgPress enter to continue, or ctrl-c to abort: """ 2365793Snate@binkert.org 2375793Snate@binkert.orgmercurial_style_hook = """ 2384382Sbinkertn@umich.edu# The following lines were automatically added by gem5/SConstruct 2394762Snate@binkert.org# to provide the gem5 style-checking hooks 2405344Sstever@gmail.com[extensions] 2414382Sbinkertn@umich.edustyle = %s/util/style.py 2425341Sstever@gmail.com 2435742Snate@binkert.org[hooks] 2445742Snate@binkert.orgpretxncommit.style = python:style.check_style 2455742Snate@binkert.orgpre-qrefresh.style = python:style.check_style 2465742Snate@binkert.org# End of SConstruct additions 2475742Snate@binkert.org 2484762Snate@binkert.org""" % (main.root.abspath) 2495742Snate@binkert.org 2505742Snate@binkert.orgmercurial_lib_not_found = """ 2515742Snate@binkert.orgMercurial libraries cannot be found, ignoring style hook. If 2525742Snate@binkert.orgyou are a gem5 developer, please fix this and run the style 2535742Snate@binkert.orghook. It is important. 2545742Snate@binkert.org""" 2555742Snate@binkert.org 2565341Sstever@gmail.com# Check for style hook and prompt for installation if it's not there. 2575742Snate@binkert.org# Skip this if --ignore-style was specified, there's no .hg dir to 2585341Sstever@gmail.com# install a hook in, or there's no interactive terminal to prompt. 2594773Snate@binkert.orgif not GetOption('ignore_style') and hgdir.exists() and sys.stdin.isatty(): 2606108Snate@binkert.org style_hook = True 2611858SN/A try: 2621085SN/A from mercurial import ui 2636658Snate@binkert.org ui = ui.ui() 2646658Snate@binkert.org ui.readconfig(hgdir.File('hgrc').abspath) 2657673Snate@binkert.org style_hook = ui.config('hooks', 'pretxncommit.style', None) and \ 2666658Snate@binkert.org ui.config('hooks', 'pre-qrefresh.style', None) 2676658Snate@binkert.org except ImportError: 2686658Snate@binkert.org print mercurial_lib_not_found 2696658Snate@binkert.org 2706658Snate@binkert.org if not style_hook: 2716658Snate@binkert.org print mercurial_style_message, 2726658Snate@binkert.org # continue unless user does ctrl-c/ctrl-d etc. 2737673Snate@binkert.org try: 2747673Snate@binkert.org raw_input() 2757673Snate@binkert.org except: 2767673Snate@binkert.org print "Input exception, exiting scons.\n" 2777673Snate@binkert.org sys.exit(1) 2787673Snate@binkert.org hgrc_path = '%s/.hg/hgrc' % main.root.abspath 2797673Snate@binkert.org print "Adding style hook to", hgrc_path, "\n" 2806658Snate@binkert.org try: 2817673Snate@binkert.org hgrc = open(hgrc_path, 'a') 2827673Snate@binkert.org hgrc.write(mercurial_style_hook) 2837673Snate@binkert.org hgrc.close() 2847673Snate@binkert.org except: 2857673Snate@binkert.org print "Error updating", hgrc_path 2867673Snate@binkert.org sys.exit(1) 2877673Snate@binkert.org 2887673Snate@binkert.org 2897673Snate@binkert.org################################################### 2907673Snate@binkert.org# 2916658Snate@binkert.org# Figure out which configurations to set up based on the path(s) of 2926658Snate@binkert.org# the target(s). 2936658Snate@binkert.org# 2944382Sbinkertn@umich.edu################################################### 2954382Sbinkertn@umich.edu 2964762Snate@binkert.org# Find default configuration & binary. 2974762Snate@binkert.orgDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA/gem5.debug')) 2984762Snate@binkert.org 2996654Snate@binkert.org# helper function: find last occurrence of element in list 3006654Snate@binkert.orgdef rfind(l, elt, offs = -1): 3015517Snate@binkert.org for i in range(len(l)+offs, 0, -1): 3025517Snate@binkert.org if l[i] == elt: 3035517Snate@binkert.org return i 3045517Snate@binkert.org raise ValueError, "element not found" 3055517Snate@binkert.org 3065517Snate@binkert.org# Take a list of paths (or SCons Nodes) and return a list with all 3075517Snate@binkert.org# paths made absolute and ~-expanded. Paths will be interpreted 3085517Snate@binkert.org# relative to the launch directory unless a different root is provided 3095517Snate@binkert.orgdef makePathListAbsolute(path_list, root=GetLaunchDir()): 3105517Snate@binkert.org return [abspath(joinpath(root, expanduser(str(p)))) 3115517Snate@binkert.org for p in path_list] 3125517Snate@binkert.org 3135517Snate@binkert.org# Each target must have 'build' in the interior of the path; the 3145517Snate@binkert.org# directory below this will determine the build parameters. For 3155517Snate@binkert.org# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 3165517Snate@binkert.org# recognize that ALPHA_SE specifies the configuration because it 3175517Snate@binkert.org# follow 'build' in the build path. 3186654Snate@binkert.org 3195517Snate@binkert.org# The funky assignment to "[:]" is needed to replace the list contents 3205517Snate@binkert.org# in place rather than reassign the symbol to a new list, which 3215517Snate@binkert.org# doesn't work (obviously!). 3225517Snate@binkert.orgBUILD_TARGETS[:] = makePathListAbsolute(BUILD_TARGETS) 3235517Snate@binkert.org 3245517Snate@binkert.org# Generate a list of the unique build roots and configs that the 3255517Snate@binkert.org# collected targets reference. 3265517Snate@binkert.orgvariant_paths = [] 3276143Snate@binkert.orgbuild_root = None 3286654Snate@binkert.orgfor t in BUILD_TARGETS: 3295517Snate@binkert.org path_dirs = t.split('/') 3305517Snate@binkert.org try: 3315517Snate@binkert.org build_top = rfind(path_dirs, 'build', -2) 3325517Snate@binkert.org except: 3335517Snate@binkert.org print "Error: no non-leaf 'build' dir found on target path", t 3345517Snate@binkert.org Exit(1) 3355517Snate@binkert.org this_build_root = joinpath('/',*path_dirs[:build_top+1]) 3365517Snate@binkert.org if not build_root: 3375517Snate@binkert.org build_root = this_build_root 3385517Snate@binkert.org else: 3395517Snate@binkert.org if this_build_root != build_root: 3405517Snate@binkert.org print "Error: build targets not under same build root\n"\ 3415517Snate@binkert.org " %s\n %s" % (build_root, this_build_root) 3425517Snate@binkert.org Exit(1) 3436654Snate@binkert.org variant_path = joinpath('/',*path_dirs[:build_top+2]) 3446654Snate@binkert.org if variant_path not in variant_paths: 3455517Snate@binkert.org variant_paths.append(variant_path) 3465517Snate@binkert.org 3476143Snate@binkert.org# Make sure build_root exists (might not if this is the first build there) 3486143Snate@binkert.orgif not isdir(build_root): 3496143Snate@binkert.org mkdir(build_root) 3506727Ssteve.reinhardt@amd.commain['BUILDROOT'] = build_root 3515517Snate@binkert.org 3526727Ssteve.reinhardt@amd.comExport('main') 3535517Snate@binkert.org 3545517Snate@binkert.orgmain.SConsignFile(joinpath(build_root, "sconsign")) 3555517Snate@binkert.org 3566654Snate@binkert.org# Default duplicate option is to use hard links, but this messes up 3576654Snate@binkert.org# when you use emacs to edit a file in the target dir, as emacs moves 3587673Snate@binkert.org# file to file~ then copies to file, breaking the link. Symbolic 3596654Snate@binkert.org# (soft) links work better. 3606654Snate@binkert.orgmain.SetOption('duplicate', 'soft-copy') 3616654Snate@binkert.org 3626654Snate@binkert.org# 3635517Snate@binkert.org# Set up global sticky variables... these are common to an entire build 3645517Snate@binkert.org# tree (not specific to a particular build like ALPHA_SE) 3655517Snate@binkert.org# 3666143Snate@binkert.org 3675517Snate@binkert.orgglobal_vars_file = joinpath(build_root, 'variables.global') 3684762Snate@binkert.org 3695517Snate@binkert.orgglobal_vars = Variables(global_vars_file, args=ARGUMENTS) 3705517Snate@binkert.org 3716143Snate@binkert.orgglobal_vars.AddVariables( 3726143Snate@binkert.org ('CC', 'C compiler', environ.get('CC', main['CC'])), 3735517Snate@binkert.org ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 3745517Snate@binkert.org ('SWIG', 'SWIG tool', environ.get('SWIG', main['SWIG'])), 3755517Snate@binkert.org ('PROTOC', 'protoc tool', environ.get('PROTOC', 'protoc')), 3765517Snate@binkert.org ('BATCH', 'Use batch pool for build and tests', False), 3775517Snate@binkert.org ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 3785517Snate@binkert.org ('M5_BUILD_CACHE', 'Cache built objects in this directory', False), 3795517Snate@binkert.org ('EXTRAS', 'Add extra directories to the compilation', '') 3805517Snate@binkert.org ) 3815517Snate@binkert.org 3825517Snate@binkert.org# Update main environment with values from ARGUMENTS & global_vars_file 3836143Snate@binkert.orgglobal_vars.Update(main) 3845517Snate@binkert.orghelp_texts["global_vars"] += global_vars.GenerateHelpText(main) 3856654Snate@binkert.org 3866654Snate@binkert.org# Save sticky variable settings back to current variables file 3876654Snate@binkert.orgglobal_vars.Save(global_vars_file, main) 3886654Snate@binkert.org 3896654Snate@binkert.org# Parse EXTRAS variable to build list of all directories where we're 3906654Snate@binkert.org# look for sources etc. This list is exported as extras_dir_list. 3915517Snate@binkert.orgbase_dir = main.srcdir.abspath 3925517Snate@binkert.orgif main['EXTRAS']: 3935517Snate@binkert.org extras_dir_list = makePathListAbsolute(main['EXTRAS'].split(':')) 3945517Snate@binkert.orgelse: 3955517Snate@binkert.org extras_dir_list = [] 3964762Snate@binkert.org 3974762Snate@binkert.orgExport('base_dir') 3984762Snate@binkert.orgExport('extras_dir_list') 3994762Snate@binkert.org 4004762Snate@binkert.org# the ext directory should be on the #includes path 4014762Snate@binkert.orgmain.Append(CPPPATH=[Dir('ext')]) 4026143Snate@binkert.org 4034762Snate@binkert.orgdef strip_build_path(path, env): 4044762Snate@binkert.org path = str(path) 4054762Snate@binkert.org variant_base = env['BUILDROOT'] + os.path.sep 4064762Snate@binkert.org if path.startswith(variant_base): 4074382Sbinkertn@umich.edu path = path[len(variant_base):] 4084382Sbinkertn@umich.edu elif path.startswith('build/'): 4095517Snate@binkert.org path = path[6:] 4106654Snate@binkert.org return path 4115517Snate@binkert.org 4125798Snate@binkert.org# Generate a string of the form: 4136654Snate@binkert.org# common/path/prefix/src1, src2 -> tgt1, tgt2 4147673Snate@binkert.org# to print while building. 4156654Snate@binkert.orgclass Transform(object): 4166654Snate@binkert.org # all specific color settings should be here and nowhere else 4176654Snate@binkert.org tool_color = termcap.Normal 4186654Snate@binkert.org pfx_color = termcap.Yellow 4196654Snate@binkert.org srcs_color = termcap.Yellow + termcap.Bold 4206654Snate@binkert.org arrow_color = termcap.Blue + termcap.Bold 4216654Snate@binkert.org tgts_color = termcap.Yellow + termcap.Bold 4226654Snate@binkert.org 4236669Snate@binkert.org def __init__(self, tool, max_sources=99): 4246669Snate@binkert.org self.format = self.tool_color + (" [%8s] " % tool) \ 4256669Snate@binkert.org + self.pfx_color + "%s" \ 4266669Snate@binkert.org + self.srcs_color + "%s" \ 4276669Snate@binkert.org + self.arrow_color + " -> " \ 4286669Snate@binkert.org + self.tgts_color + "%s" \ 4296654Snate@binkert.org + termcap.Normal 4307673Snate@binkert.org self.max_sources = max_sources 4315517Snate@binkert.org 4325863Snate@binkert.org def __call__(self, target, source, env, for_signature=None): 4335798Snate@binkert.org # truncate source list according to max_sources param 4345798Snate@binkert.org source = source[0:self.max_sources] 4355798Snate@binkert.org def strip(f): 4365798Snate@binkert.org return strip_build_path(str(f), env) 4375517Snate@binkert.org if len(source) > 0: 4385517Snate@binkert.org srcs = map(strip, source) 4397673Snate@binkert.org else: 4405517Snate@binkert.org srcs = [''] 4415517Snate@binkert.org tgts = map(strip, target) 4427673Snate@binkert.org # surprisingly, os.path.commonprefix is a dumb char-by-char string 4437673Snate@binkert.org # operation that has nothing to do with paths. 4445517Snate@binkert.org com_pfx = os.path.commonprefix(srcs + tgts) 4455798Snate@binkert.org com_pfx_len = len(com_pfx) 4465798Snate@binkert.org if com_pfx: 4475798Snate@binkert.org # do some cleanup and sanity checking on common prefix 4485798Snate@binkert.org if com_pfx[-1] == ".": 4495798Snate@binkert.org # prefix matches all but file extension: ok 4505798Snate@binkert.org # back up one to change 'foo.cc -> o' to 'foo.cc -> .o' 4514762Snate@binkert.org com_pfx = com_pfx[0:-1] 4524762Snate@binkert.org elif com_pfx[-1] == "/": 4534762Snate@binkert.org # common prefix is directory path: OK 4544762Snate@binkert.org pass 4554762Snate@binkert.org else: 4565517Snate@binkert.org src0_len = len(srcs[0]) 4575517Snate@binkert.org tgt0_len = len(tgts[0]) 4585517Snate@binkert.org if src0_len == com_pfx_len: 4595517Snate@binkert.org # source is a substring of target, OK 4605517Snate@binkert.org pass 4615517Snate@binkert.org elif tgt0_len == com_pfx_len: 4627673Snate@binkert.org # target is a substring of source, need to back up to 4637673Snate@binkert.org # avoid empty string on RHS of arrow 4647673Snate@binkert.org sep_idx = com_pfx.rfind(".") 4655517Snate@binkert.org if sep_idx != -1: 4665517Snate@binkert.org com_pfx = com_pfx[0:sep_idx] 4675517Snate@binkert.org else: 4685517Snate@binkert.org com_pfx = '' 4695517Snate@binkert.org elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".": 4705517Snate@binkert.org # still splitting at file extension: ok 4715517Snate@binkert.org pass 4727673Snate@binkert.org else: 4737673Snate@binkert.org # probably a fluke; ignore it 4747673Snate@binkert.org com_pfx = '' 4755517Snate@binkert.org # recalculate length in case com_pfx was modified 4765517Snate@binkert.org com_pfx_len = len(com_pfx) 4775517Snate@binkert.org def fmt(files): 4785517Snate@binkert.org f = map(lambda s: s[com_pfx_len:], files) 4795517Snate@binkert.org return ', '.join(f) 4805517Snate@binkert.org return self.format % (com_pfx, fmt(srcs), fmt(tgts)) 4815517Snate@binkert.org 4827673Snate@binkert.orgExport('Transform') 4837673Snate@binkert.org 4847673Snate@binkert.org# enable the regression script to use the termcap 4855517Snate@binkert.orgmain['TERMCAP'] = termcap 4865517Snate@binkert.org 4875517Snate@binkert.orgif GetOption('verbose'): 4885517Snate@binkert.org def MakeAction(action, string, *args, **kwargs): 4895517Snate@binkert.org return Action(action, *args, **kwargs) 4905517Snate@binkert.orgelse: 4915517Snate@binkert.org MakeAction = Action 4927673Snate@binkert.org main['CCCOMSTR'] = Transform("CC") 4937673Snate@binkert.org main['CXXCOMSTR'] = Transform("CXX") 4947673Snate@binkert.org main['ASCOMSTR'] = Transform("AS") 4955517Snate@binkert.org main['SWIGCOMSTR'] = Transform("SWIG") 4964762Snate@binkert.org main['ARCOMSTR'] = Transform("AR", 0) 4974762Snate@binkert.org main['LINKCOMSTR'] = Transform("LINK", 0) 4986143Snate@binkert.org main['RANLIBCOMSTR'] = Transform("RANLIB", 0) 4996143Snate@binkert.org main['M4COMSTR'] = Transform("M4") 5006143Snate@binkert.org main['SHCCCOMSTR'] = Transform("SHCC") 5014762Snate@binkert.org main['SHCXXCOMSTR'] = Transform("SHCXX") 5024762Snate@binkert.orgExport('MakeAction') 5034762Snate@binkert.org 5045517Snate@binkert.org# Initialize the Link-Time Optimization (LTO) flags 5054762Snate@binkert.orgmain['LTO_CCFLAGS'] = [] 5064762Snate@binkert.orgmain['LTO_LDFLAGS'] = [] 5074762Snate@binkert.org 5085463Snate@binkert.orgCXX_version = readCommand([main['CXX'],'--version'], exception=False) 5095517Snate@binkert.orgCXX_V = readCommand([main['CXX'],'-V'], exception=False) 5106656Snate@binkert.org 5115463Snate@binkert.orgmain['GCC'] = CXX_version and CXX_version.find('g++') >= 0 5125517Snate@binkert.orgmain['CLANG'] = CXX_version and CXX_version.find('clang') >= 0 5134762Snate@binkert.orgif main['GCC'] + main['CLANG'] > 1: 5144762Snate@binkert.org print 'Error: How can we have two at the same time?' 5154762Snate@binkert.org Exit(1) 5166143Snate@binkert.org 5176143Snate@binkert.org# Set up default C++ compiler flags 5186143Snate@binkert.orgif main['GCC']: 5194762Snate@binkert.org # Check for a supported version of gcc, >= 4.4 is needed for c++0x 5204762Snate@binkert.org # support. See http://gcc.gnu.org/projects/cxx0x.html for details 5215517Snate@binkert.org gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 5224762Snate@binkert.org if compareVersions(gcc_version, "4.4") < 0: 5234762Snate@binkert.org print 'Error: gcc version 4.4 or newer required.' 5244762Snate@binkert.org print ' Installed version:', gcc_version 5254762Snate@binkert.org Exit(1) 5265517Snate@binkert.org 5274762Snate@binkert.org main['GCC_VERSION'] = gcc_version 5284762Snate@binkert.org main.Append(CCFLAGS=['-pipe']) 5294762Snate@binkert.org main.Append(CCFLAGS=['-fno-strict-aliasing']) 5304762Snate@binkert.org main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef']) 5315517Snate@binkert.org main.Append(CXXFLAGS=['-Wmissing-field-initializers', 5325517Snate@binkert.org '-Woverloaded-virtual']) 5335517Snate@binkert.org main.Append(CXXFLAGS=['-std=c++0x']) 5345517Snate@binkert.org 5355517Snate@binkert.org # Check for versions with bugs 5365517Snate@binkert.org if not compareVersions(gcc_version, '4.4.1') or \ 5375517Snate@binkert.org not compareVersions(gcc_version, '4.4.2'): 5385517Snate@binkert.org print 'Info: Tree vectorizer in GCC 4.4.1 & 4.4.2 is buggy, disabling.' 5395517Snate@binkert.org main.Append(CCFLAGS=['-fno-tree-vectorize']) 5405517Snate@binkert.org 5415517Snate@binkert.org # LTO support is only really working properly from 4.6 and beyond 5425517Snate@binkert.org if compareVersions(gcc_version, '4.6') >= 0: 5435517Snate@binkert.org # Add the appropriate Link-Time Optimization (LTO) flags 5445517Snate@binkert.org # unless LTO is explicitly turned off. Note that these flags 5455517Snate@binkert.org # are only used by the fast target. 5465517Snate@binkert.org if not GetOption('no_lto'): 5475517Snate@binkert.org # Pass the LTO flag when compiling to produce GIMPLE 5485517Snate@binkert.org # output, we merely create the flags here and only append 5495517Snate@binkert.org # them later/ 5505517Snate@binkert.org main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 5517673Snate@binkert.org 5527673Snate@binkert.org # Use the same amount of jobs for LTO as we are running 5535517Snate@binkert.org # scons with, we hardcode the use of the linker plugin 5547673Snate@binkert.org # which requires either gold or GNU ld >= 2.21 5557673Snate@binkert.org main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs'), 5567673Snate@binkert.org '-fuse-linker-plugin'] 5577673Snate@binkert.org 5585517Snate@binkert.orgelif main['CLANG']: 5595517Snate@binkert.org # Check for a supported version of clang, >= 2.9 is needed to 5605517Snate@binkert.org # support similar features as gcc 4.4. See 5615517Snate@binkert.org # http://clang.llvm.org/cxx_status.html for details 5627673Snate@binkert.org clang_version_re = re.compile(".* version (\d+\.\d+)") 5637673Snate@binkert.org clang_version_match = clang_version_re.match(CXX_version) 5647673Snate@binkert.org if (clang_version_match): 5657673Snate@binkert.org clang_version = clang_version_match.groups()[0] 5667673Snate@binkert.org if compareVersions(clang_version, "2.9") < 0: 5677673Snate@binkert.org print 'Error: clang version 2.9 or newer required.' 5685517Snate@binkert.org print ' Installed version:', clang_version 5697673Snate@binkert.org Exit(1) 5707673Snate@binkert.org else: 5717673Snate@binkert.org print 'Error: Unable to determine clang version.' 5727673Snate@binkert.org Exit(1) 5735517Snate@binkert.org 5747673Snate@binkert.org main.Append(CCFLAGS=['-pipe']) 5757673Snate@binkert.org main.Append(CCFLAGS=['-fno-strict-aliasing']) 5765517Snate@binkert.org main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef']) 5775517Snate@binkert.org main.Append(CCFLAGS=['-Wno-tautological-compare']) 5787673Snate@binkert.org main.Append(CCFLAGS=['-Wno-self-assign']) 5795517Snate@binkert.org # Ruby makes frequent use of extraneous parantheses in the printing 5807673Snate@binkert.org # of if-statements 5815517Snate@binkert.org main.Append(CCFLAGS=['-Wno-parentheses']) 5825517Snate@binkert.org main.Append(CXXFLAGS=['-Wmissing-field-initializers', 5835610Snate@binkert.org '-Woverloaded-virtual']) 5845623Snate@binkert.org main.Append(CXXFLAGS=['-std=c++0x']) 5855623Snate@binkert.org # On Mac OS X/Darwin we need to also use libc++ (part of XCode) as 5865610Snate@binkert.org # opposed to libstdc++ to make the transition from TR1 to 5877673Snate@binkert.org # C++11. See http://libcxx.llvm.org. However, clang has chosen a 5887673Snate@binkert.org # strict implementation of the C++11 standard, and does not allow 5895623Snate@binkert.org # incomplete types in template arguments (besides unique_ptr and 5905623Snate@binkert.org # shared_ptr), and the libc++ STL containers create problems in 5917673Snate@binkert.org # combination with the current gem5 code. For now, we stick with 5925623Snate@binkert.org # libstdc++ and use the TR1 namespace. 5935623Snate@binkert.org # if sys.platform == "darwin": 5947673Snate@binkert.org # main.Append(CXXFLAGS=['-stdlib=libc++']) 5955623Snate@binkert.org 5967673Snate@binkert.orgelse: 5977673Snate@binkert.org print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 5985610Snate@binkert.org print "Don't know what compiler options to use for your compiler." 5997673Snate@binkert.org print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 6007673Snate@binkert.org print termcap.Yellow + ' version:' + termcap.Normal, 6017673Snate@binkert.org if not CXX_version: 6025517Snate@binkert.org print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 6037673Snate@binkert.org termcap.Normal 6047673Snate@binkert.org else: 6057673Snate@binkert.org print CXX_version.replace('\n', '<nl>') 6065517Snate@binkert.org print " If you're trying to use a compiler other than GCC" 6077673Snate@binkert.org print " or clang, there appears to be something wrong with your" 6087673Snate@binkert.org print " environment." 6097673Snate@binkert.org print " " 6105517Snate@binkert.org print " If you are trying to use a compiler other than those listed" 6117673Snate@binkert.org print " above you will need to ease fix SConstruct and " 6125517Snate@binkert.org print " src/SConscript to support that compiler." 6134762Snate@binkert.org Exit(1) 6146143Snate@binkert.org 6156143Snate@binkert.org# Set up common yacc/bison flags (needed for Ruby) 6165463Snate@binkert.orgmain['YACCFLAGS'] = '-d' 6174762Snate@binkert.orgmain['YACCHXXFILESUFFIX'] = '.hh' 6184762Snate@binkert.org 6197674Snate@binkert.org# Do this after we save setting back, or else we'll tack on an 6207674Snate@binkert.org# extra 'qdo' every time we run scons. 6217674Snate@binkert.orgif main['BATCH']: 6227674Snate@binkert.org main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 6237674Snate@binkert.org main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 6247674Snate@binkert.org main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 6257674Snate@binkert.org main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 6267674Snate@binkert.org main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 6277674Snate@binkert.org 6287674Snate@binkert.orgif sys.platform == 'cygwin': 6297674Snate@binkert.org # cygwin has some header file issues... 6307674Snate@binkert.org main.Append(CCFLAGS=["-Wno-uninitialized"]) 6317674Snate@binkert.org 6327674Snate@binkert.org# Check for the protobuf compiler 6337674Snate@binkert.orgprotoc_version = readCommand([main['PROTOC'], '--version'], 6344762Snate@binkert.org exception='').split() 6356143Snate@binkert.org 6366143Snate@binkert.org# First two words should be "libprotoc x.y.z" 6374382Sbinkertn@umich.eduif len(protoc_version) < 2 or protoc_version[0] != 'libprotoc': 6384382Sbinkertn@umich.edu print termcap.Yellow + termcap.Bold + \ 6397674Snate@binkert.org 'Warning: Protocol buffer compiler (protoc) not found.\n' + \ 6407674Snate@binkert.org ' Please install protobuf-compiler for tracing support.' + \ 6417674Snate@binkert.org termcap.Normal 6426143Snate@binkert.org main['PROTOC'] = False 6436143Snate@binkert.orgelse: 6444382Sbinkertn@umich.edu # Based on the availability of the compress stream wrappers, 6456229Snate@binkert.org # require 2.1.0 6466229Snate@binkert.org min_protoc_version = '2.1.0' 6476229Snate@binkert.org if compareVersions(protoc_version[1], min_protoc_version) < 0: 6486229Snate@binkert.org print termcap.Yellow + termcap.Bold + \ 6496229Snate@binkert.org 'Warning: protoc version', min_protoc_version, \ 6506229Snate@binkert.org 'or newer required.\n' + \ 6516229Snate@binkert.org ' Installed version:', protoc_version[1], \ 6526229Snate@binkert.org termcap.Normal 6536229Snate@binkert.org main['PROTOC'] = False 6546229Snate@binkert.org else: 6556229Snate@binkert.org # Attempt to determine the appropriate include path and 6566229Snate@binkert.org # library path using pkg-config, that means we also need to 6576229Snate@binkert.org # check for pkg-config. Note that it is possible to use 6586229Snate@binkert.org # protobuf without the involvement of pkg-config. Later on we 6596229Snate@binkert.org # check go a library config check and at that point the test 6606229Snate@binkert.org # will fail if libprotobuf cannot be found. 6616229Snate@binkert.org if readCommand(['pkg-config', '--version'], exception=''): 6626229Snate@binkert.org try: 6636229Snate@binkert.org # Attempt to establish what linking flags to add for protobuf 6646229Snate@binkert.org # using pkg-config 6656229Snate@binkert.org main.ParseConfig('pkg-config --cflags --libs-only-L protobuf') 6665192Ssaidi@eecs.umich.edu except: 6675517Snate@binkert.org print termcap.Yellow + termcap.Bold + \ 6685517Snate@binkert.org 'Warning: pkg-config could not get protobuf flags.' + \ 6697673Snate@binkert.org termcap.Normal 6705517Snate@binkert.org 6716229Snate@binkert.org# Check for SWIG 6725799Snate@binkert.orgif not main.has_key('SWIG'): 6737673Snate@binkert.org print 'Error: SWIG utility not found.' 6747673Snate@binkert.org print ' Please install (see http://www.swig.org) and retry.' 6755517Snate@binkert.org Exit(1) 6765517Snate@binkert.org 6777673Snate@binkert.org# Check for appropriate SWIG version 6787673Snate@binkert.orgswig_version = readCommand([main['SWIG'], '-version'], exception='').split() 6797673Snate@binkert.org# First 3 words should be "SWIG Version x.y.z" 6807673Snate@binkert.orgif len(swig_version) < 3 or \ 6815517Snate@binkert.org swig_version[0] != 'SWIG' or swig_version[1] != 'Version': 6827673Snate@binkert.org print 'Error determining SWIG version.' 6837673Snate@binkert.org Exit(1) 6847673Snate@binkert.org 6855517Snate@binkert.orgmin_swig_version = '1.3.34' 6865517Snate@binkert.orgif compareVersions(swig_version[2], min_swig_version) < 0: 6877673Snate@binkert.org print 'Error: SWIG version', min_swig_version, 'or newer required.' 6887673Snate@binkert.org print ' Installed version:', swig_version[2] 6897673Snate@binkert.org Exit(1) 6907673Snate@binkert.org 6915517Snate@binkert.org# Set up SWIG flags & scanner 6927673Snate@binkert.orgswig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS') 6937673Snate@binkert.orgmain.Append(SWIGFLAGS=swig_flags) 6945517Snate@binkert.org 6957673Snate@binkert.org# filter out all existing swig scanners, they mess up the dependency 6967673Snate@binkert.org# stuff for some reason 6975517Snate@binkert.orgscanners = [] 6987673Snate@binkert.orgfor scanner in main['SCANNERS']: 6995517Snate@binkert.org skeys = scanner.skeys 7005517Snate@binkert.org if skeys == '.i': 7017673Snate@binkert.org continue 7027673Snate@binkert.org 7037673Snate@binkert.org if isinstance(skeys, (list, tuple)) and '.i' in skeys: 7047673Snate@binkert.org continue 7055517Snate@binkert.org 7067673Snate@binkert.org scanners.append(scanner) 7077673Snate@binkert.org 7087673Snate@binkert.org# add the new swig scanner that we like better 7095517Snate@binkert.orgfrom SCons.Scanner import ClassicCPP as CPPScanner 7107673Snate@binkert.orgswig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")' 7117673Snate@binkert.orgscanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re)) 7127673Snate@binkert.org 7135517Snate@binkert.org# replace the scanners list that has what we want 7147673Snate@binkert.orgmain['SCANNERS'] = scanners 7155517Snate@binkert.org 7165517Snate@binkert.org# Add a custom Check function to the Configure context so that we can 7175517Snate@binkert.org# figure out if the compiler adds leading underscores to global 7185517Snate@binkert.org# variables. This is needed for the autogenerated asm files that we 7196229Snate@binkert.org# use for embedding the python code. 7207673Snate@binkert.orgdef CheckLeading(context): 7215517Snate@binkert.org context.Message("Checking for leading underscore in global variables...") 7225517Snate@binkert.org # 1) Define a global variable called x from asm so the C compiler 7237673Snate@binkert.org # won't change the symbol at all. 7245517Snate@binkert.org # 2) Declare that variable. 7255517Snate@binkert.org # 3) Use the variable 7265517Snate@binkert.org # 7275517Snate@binkert.org # If the compiler prepends an underscore, this will successfully 7285517Snate@binkert.org # link because the external symbol 'x' will be called '_x' which 7295517Snate@binkert.org # was defined by the asm statement. If the compiler does not 7305517Snate@binkert.org # prepend an underscore, this will not successfully link because 7315517Snate@binkert.org # '_x' will have been defined by assembly, while the C portion of 7325517Snate@binkert.org # the code will be trying to use 'x' 7337673Snate@binkert.org ret = context.TryLink(''' 7345517Snate@binkert.org asm(".globl _x; _x: .byte 0"); 7357673Snate@binkert.org extern int x; 7365517Snate@binkert.org int main() { return x; } 7375517Snate@binkert.org ''', extension=".c") 7385517Snate@binkert.org context.env.Append(LEADING_UNDERSCORE=ret) 7395517Snate@binkert.org context.Result(ret) 7407673Snate@binkert.org return ret 7415517Snate@binkert.org 7427673Snate@binkert.org# Platform-specific configuration. Note again that we assume that all 7435517Snate@binkert.org# builds under a given build root run on the same host platform. 7445517Snate@binkert.orgconf = Configure(main, 7457673Snate@binkert.org conf_dir = joinpath(build_root, '.scons_config'), 7467673Snate@binkert.org log_file = joinpath(build_root, 'scons_config.log'), 7475517Snate@binkert.org custom_tests = { 'CheckLeading' : CheckLeading }) 7487673Snate@binkert.org 7497673Snate@binkert.org# Check for leading underscores. Don't really need to worry either 7505517Snate@binkert.org# way so don't need to check the return code. 7517673Snate@binkert.orgconf.CheckLeading() 7527673Snate@binkert.org 7537673Snate@binkert.org# Check if we should compile a 64 bit binary on Mac OS X/Darwin 7547673Snate@binkert.orgtry: 7555517Snate@binkert.org import platform 7565517Snate@binkert.org uname = platform.uname() 7575517Snate@binkert.org if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0: 7587673Snate@binkert.org if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]): 7597673Snate@binkert.org main.Append(CCFLAGS=['-arch', 'x86_64']) 7605517Snate@binkert.org main.Append(CFLAGS=['-arch', 'x86_64']) 7615517Snate@binkert.org main.Append(LINKFLAGS=['-arch', 'x86_64']) 7627673Snate@binkert.org main.Append(ASFLAGS=['-arch', 'x86_64']) 7637673Snate@binkert.orgexcept: 7647673Snate@binkert.org pass 7657673Snate@binkert.org 7665517Snate@binkert.org# Recent versions of scons substitute a "Null" object for Configure() 7675517Snate@binkert.org# when configuration isn't necessary, e.g., if the "--help" option is 7685517Snate@binkert.org# present. Unfortuantely this Null object always returns false, 7695517Snate@binkert.org# breaking all our configuration checks. We replace it with our own 7707673Snate@binkert.org# more optimistic null object that returns True instead. 7717673Snate@binkert.orgif not conf: 7725517Snate@binkert.org def NullCheck(*args, **kwargs): 7737673Snate@binkert.org return True 7747673Snate@binkert.org 7757673Snate@binkert.org class NullConf: 7767673Snate@binkert.org def __init__(self, env): 7777673Snate@binkert.org self.env = env 7785517Snate@binkert.org def Finish(self): 7795517Snate@binkert.org return self.env 7805517Snate@binkert.org def __getattr__(self, mname): 7817673Snate@binkert.org return NullCheck 7827673Snate@binkert.org 7837673Snate@binkert.org conf = NullConf(main) 7845517Snate@binkert.org 7855517Snate@binkert.org# Find Python include and library directories for embedding the 7867673Snate@binkert.org# interpreter. For consistency, we will use the same Python 7875517Snate@binkert.org# installation used to run scons (and thus this script). If you want 7887673Snate@binkert.org# to link in an alternate version, see above for instructions on how 7897673Snate@binkert.org# to invoke scons with a different copy of the Python interpreter. 7905517Snate@binkert.orgfrom distutils import sysconfig 7917673Snate@binkert.org 7925517Snate@binkert.orgpy_getvar = sysconfig.get_config_var 7935517Snate@binkert.org 7945517Snate@binkert.orgpy_debug = getattr(sys, 'pydebug', False) 7955517Snate@binkert.orgpy_version = 'python' + py_getvar('VERSION') + (py_debug and "_d" or "") 7966229Snate@binkert.org 7977673Snate@binkert.orgpy_general_include = sysconfig.get_python_inc() 7985517Snate@binkert.orgpy_platform_include = sysconfig.get_python_inc(plat_specific=True) 7995517Snate@binkert.orgpy_includes = [ py_general_include ] 8007673Snate@binkert.orgif py_platform_include != py_general_include: 8015517Snate@binkert.org py_includes.append(py_platform_include) 8025517Snate@binkert.org 8035517Snate@binkert.orgpy_lib_path = [ py_getvar('LIBDIR') ] 8045517Snate@binkert.org# add the prefix/lib/pythonX.Y/config dir, but only if there is no 8055517Snate@binkert.org# shared library in prefix/lib/. 8065517Snate@binkert.orgif not py_getvar('Py_ENABLE_SHARED'): 8075517Snate@binkert.org py_lib_path.append(py_getvar('LIBPL')) 8085517Snate@binkert.org 8095517Snate@binkert.orgpy_libs = [] 8105517Snate@binkert.orgfor lib in py_getvar('LIBS').split() + py_getvar('SYSLIBS').split(): 8115517Snate@binkert.org if not lib.startswith('-l'): 8127673Snate@binkert.org # Python requires some special flags to link (e.g. -framework 8135517Snate@binkert.org # common on OS X systems), assume appending preserves order 8145517Snate@binkert.org main.Append(LINKFLAGS=[lib]) 8155517Snate@binkert.org else: 8167673Snate@binkert.org lib = lib[2:] 8175517Snate@binkert.org if lib not in py_libs: 8185517Snate@binkert.org py_libs.append(lib) 8197673Snate@binkert.orgpy_libs.append(py_version) 8205517Snate@binkert.org 8215517Snate@binkert.orgmain.Append(CPPPATH=py_includes) 8225517Snate@binkert.orgmain.Append(LIBPATH=py_lib_path) 8237673Snate@binkert.org 8247673Snate@binkert.org# Cache build files in the supplied directory. 8257673Snate@binkert.orgif main['M5_BUILD_CACHE']: 8265517Snate@binkert.org print 'Using build cache located at', main['M5_BUILD_CACHE'] 8275517Snate@binkert.org CacheDir(main['M5_BUILD_CACHE']) 8287673Snate@binkert.org 8295517Snate@binkert.org 8305517Snate@binkert.org# verify that this stuff works 8317673Snate@binkert.orgif not conf.CheckHeader('Python.h', '<>'): 8325517Snate@binkert.org print "Error: can't find Python.h header in", py_includes 8337673Snate@binkert.org print "Install Python headers (package python-dev on Ubuntu and RedHat)" 8347673Snate@binkert.org Exit(1) 8355517Snate@binkert.org 8365517Snate@binkert.orgfor lib in py_libs: 8375517Snate@binkert.org if not conf.CheckLib(lib): 8387673Snate@binkert.org print "Error: can't find library %s required by python" % lib 8395517Snate@binkert.org Exit(1) 8405517Snate@binkert.org 8415517Snate@binkert.org# On Solaris you need to use libsocket for socket ops 8427673Snate@binkert.orgif not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 8437673Snate@binkert.org if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 8445517Snate@binkert.org print "Can't find library with socket calls (e.g. accept())" 8455517Snate@binkert.org Exit(1) 8467673Snate@binkert.org 8475517Snate@binkert.org# Check for zlib. If the check passes, libz will be automatically 8485517Snate@binkert.org# added to the LIBS environment variable. 8495517Snate@binkert.orgif not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 8505517Snate@binkert.org print 'Error: did not find needed zlib compression library '\ 8515517Snate@binkert.org 'and/or zlib.h header file.' 8525517Snate@binkert.org print ' Please install zlib and try again.' 8535517Snate@binkert.org Exit(1) 8545517Snate@binkert.org 8555517Snate@binkert.org# If we have the protobuf compiler, also make sure we have the 8565517Snate@binkert.org# development libraries. If the check passes, libprotobuf will be 8575517Snate@binkert.org# automatically added to the LIBS environment variable. After 8585517Snate@binkert.org# this, we can use the HAVE_PROTOBUF flag to determine if we have 8595517Snate@binkert.org# got both protoc and libprotobuf available. 8607673Snate@binkert.orgmain['HAVE_PROTOBUF'] = main['PROTOC'] and \ 8615517Snate@binkert.org conf.CheckLibWithHeader('protobuf', 'google/protobuf/message.h', 8627673Snate@binkert.org 'C++', 'GOOGLE_PROTOBUF_VERIFY_VERSION;') 8635517Snate@binkert.org 8646143Snate@binkert.org# If we have the compiler but not the library, print another warning. 8655517Snate@binkert.orgif main['PROTOC'] and not main['HAVE_PROTOBUF']: 8665192Ssaidi@eecs.umich.edu print termcap.Yellow + termcap.Bold + \ 8675192Ssaidi@eecs.umich.edu 'Warning: did not find protocol buffer library and/or headers.\n' + \ 8685517Snate@binkert.org ' Please install libprotobuf-dev for tracing support.' + \ 8695517Snate@binkert.org termcap.Normal 8705192Ssaidi@eecs.umich.edu 8715192Ssaidi@eecs.umich.edu# Check for librt. 8727674Snate@binkert.orghave_posix_clock = \ 8735522Snate@binkert.org conf.CheckLibWithHeader(None, 'time.h', 'C', 8745522Snate@binkert.org 'clock_nanosleep(0,0,NULL,NULL);') or \ 8757674Snate@binkert.org conf.CheckLibWithHeader('rt', 'time.h', 'C', 8767674Snate@binkert.org 'clock_nanosleep(0,0,NULL,NULL);') 8777674Snate@binkert.org 8787674Snate@binkert.orgif conf.CheckLib('tcmalloc_minimal'): 8797674Snate@binkert.org have_tcmalloc = True 8807674Snate@binkert.orgelse: 8817674Snate@binkert.org have_tcmalloc = False 8827674Snate@binkert.org print termcap.Yellow + termcap.Bold + \ 8835522Snate@binkert.org "You can get a 12% performance improvement by installing tcmalloc "\ 8845522Snate@binkert.org "(libgoogle-perftools-dev package on Ubuntu or RedHat)." + \ 8855522Snate@binkert.org termcap.Normal 8865517Snate@binkert.org 8875522Snate@binkert.orgif not have_posix_clock: 8885517Snate@binkert.org print "Can't find library for POSIX clocks." 8896143Snate@binkert.org 8906727Ssteve.reinhardt@amd.com# Check for <fenv.h> (C99 FP environment control) 8915522Snate@binkert.orghave_fenv = conf.CheckHeader('fenv.h', '<>') 8925522Snate@binkert.orgif not have_fenv: 8935522Snate@binkert.org print "Warning: Header file <fenv.h> not found." 8947674Snate@binkert.org print " This host has no IEEE FP rounding mode control." 8955517Snate@binkert.org 8967673Snate@binkert.org###################################################################### 8977673Snate@binkert.org# 8987674Snate@binkert.org# Finish the configuration 8997673Snate@binkert.org# 9007674Snate@binkert.orgmain = conf.Finish() 9017674Snate@binkert.org 9027674Snate@binkert.org###################################################################### 9037674Snate@binkert.org# 9047674Snate@binkert.org# Collect all non-global variables 9057674Snate@binkert.org# 9065522Snate@binkert.org 9075522Snate@binkert.org# Define the universe of supported ISAs 9087674Snate@binkert.orgall_isa_list = [ ] 9097674Snate@binkert.orgExport('all_isa_list') 9107674Snate@binkert.org 9117674Snate@binkert.orgclass CpuModel(object): 9127673Snate@binkert.org '''The CpuModel class encapsulates everything the ISA parser needs to 9137674Snate@binkert.org know about a particular CPU model.''' 9147674Snate@binkert.org 9157674Snate@binkert.org # Dict of available CPU model objects. Accessible as CpuModel.dict. 9167674Snate@binkert.org dict = {} 9177674Snate@binkert.org list = [] 9187674Snate@binkert.org defaults = [] 9197674Snate@binkert.org 9207674Snate@binkert.org # Constructor. Automatically adds models to CpuModel.dict. 9217674Snate@binkert.org def __init__(self, name, filename, includes, strings, default=False): 9227674Snate@binkert.org self.name = name # name of model 9237673Snate@binkert.org self.filename = filename # filename for output exec code 9245522Snate@binkert.org self.includes = includes # include files needed in exec file 9256143Snate@binkert.org # The 'strings' dict holds all the per-CPU symbols we can 9267674Snate@binkert.org # substitute into templates etc. 9277674Snate@binkert.org self.strings = strings 9284382Sbinkertn@umich.edu 9294382Sbinkertn@umich.edu # This cpu is enabled by default 9304382Sbinkertn@umich.edu self.default = default 9314382Sbinkertn@umich.edu 9324382Sbinkertn@umich.edu # Add self to dict 9334382Sbinkertn@umich.edu if name in CpuModel.dict: 9344382Sbinkertn@umich.edu raise AttributeError, "CpuModel '%s' already registered" % name 9354382Sbinkertn@umich.edu CpuModel.dict[name] = self 9364382Sbinkertn@umich.edu CpuModel.list.append(name) 9374382Sbinkertn@umich.edu 9386143Snate@binkert.orgExport('CpuModel') 939955SN/A 9402655Sstever@eecs.umich.edu# Sticky variables get saved in the variables file so they persist from 9412655Sstever@eecs.umich.edu# one invocation to the next (unless overridden, in which case the new 9422655Sstever@eecs.umich.edu# value becomes sticky). 9432655Sstever@eecs.umich.edusticky_vars = Variables(args=ARGUMENTS) 9442655Sstever@eecs.umich.eduExport('sticky_vars') 9455601Snate@binkert.org 9465601Snate@binkert.org# Sticky variables that should be exported 9475601Snate@binkert.orgexport_vars = [] 9485601Snate@binkert.orgExport('export_vars') 9495522Snate@binkert.org 9505863Snate@binkert.org# For Ruby 9515601Snate@binkert.orgall_protocols = [] 9525601Snate@binkert.orgExport('all_protocols') 9535601Snate@binkert.orgprotocol_dirs = [] 9545863Snate@binkert.orgExport('protocol_dirs') 9556143Snate@binkert.orgslicc_includes = [] 9565559Snate@binkert.orgExport('slicc_includes') 9575559Snate@binkert.org 9585559Snate@binkert.org# Walk the tree and execute all SConsopts scripts that wil add to the 9595559Snate@binkert.org# above variables 9605601Snate@binkert.orgif not GetOption('verbose'): 9616143Snate@binkert.org print "Reading SConsopts" 9626143Snate@binkert.orgfor bdir in [ base_dir ] + extras_dir_list: 9636143Snate@binkert.org if not isdir(bdir): 9646143Snate@binkert.org print "Error: directory '%s' does not exist" % bdir 9656143Snate@binkert.org Exit(1) 9666143Snate@binkert.org for root, dirs, files in os.walk(bdir): 9676143Snate@binkert.org if 'SConsopts' in files: 9686143Snate@binkert.org if GetOption('verbose'): 9696143Snate@binkert.org print "Reading", joinpath(root, 'SConsopts') 9706143Snate@binkert.org SConscript(joinpath(root, 'SConsopts')) 9716143Snate@binkert.org 9726143Snate@binkert.orgall_isa_list.sort() 9736143Snate@binkert.org 9746143Snate@binkert.orgsticky_vars.AddVariables( 9756143Snate@binkert.org EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 9766143Snate@binkert.org ListVariable('CPU_MODELS', 'CPU models', 9776143Snate@binkert.org sorted(n for n,m in CpuModel.dict.iteritems() if m.default), 9786143Snate@binkert.org sorted(CpuModel.list)), 9796143Snate@binkert.org BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 9806143Snate@binkert.org False), 9816143Snate@binkert.org BoolVariable('SS_COMPATIBLE_FP', 9826143Snate@binkert.org 'Make floating-point results compatible with SimpleScalar', 9836143Snate@binkert.org False), 9846143Snate@binkert.org BoolVariable('USE_SSE2', 9856143Snate@binkert.org 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 9866143Snate@binkert.org False), 9876143Snate@binkert.org BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), 9886143Snate@binkert.org BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 9896143Snate@binkert.org BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False), 9906143Snate@binkert.org EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None', 9916143Snate@binkert.org all_protocols), 9926143Snate@binkert.org ) 9936240Snate@binkert.org 9945554Snate@binkert.org# These variables get exported to #defines in config/*.hh (see src/SConscript). 9955522Snate@binkert.orgexport_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 'TARGET_ISA', 'CP_ANNOTATE', 9965522Snate@binkert.org 'USE_POSIX_CLOCK', 'PROTOCOL', 'HAVE_PROTOBUF'] 9975797Snate@binkert.org 9985797Snate@binkert.org################################################### 9995522Snate@binkert.org# 10005584Snate@binkert.org# Define a SCons builder for configuration flag headers. 10016143Snate@binkert.org# 10025862Snate@binkert.org################################################### 10035584Snate@binkert.org 10045601Snate@binkert.org# This function generates a config header file that #defines the 10056143Snate@binkert.org# variable symbol to the current variable setting (0 or 1). The source 10066143Snate@binkert.org# operands are the name of the variable and a Value node containing the 10072655Sstever@eecs.umich.edu# value of the variable. 10086143Snate@binkert.orgdef build_config_file(target, source, env): 10096143Snate@binkert.org (variable, value) = [s.get_contents() for s in source] 10106143Snate@binkert.org f = file(str(target[0]), 'w') 10116143Snate@binkert.org print >> f, '#define', variable, value 10126143Snate@binkert.org f.close() 10134007Ssaidi@eecs.umich.edu return None 10144596Sbinkertn@umich.edu 10154007Ssaidi@eecs.umich.edu# Combine the two functions into a scons Action object. 10164596Sbinkertn@umich.educonfig_action = MakeAction(build_config_file, Transform("CONFIG H", 2)) 10176143Snate@binkert.org 10185522Snate@binkert.org# The emitter munges the source & target node lists to reflect what 10195601Snate@binkert.org# we're really doing. 10205601Snate@binkert.orgdef config_emitter(target, source, env): 10212655Sstever@eecs.umich.edu # extract variable name from Builder arg 1022955SN/A variable = str(target[0]) 10233918Ssaidi@eecs.umich.edu # True target is config header file 10243918Ssaidi@eecs.umich.edu target = joinpath('config', variable.lower() + '.hh') 10253918Ssaidi@eecs.umich.edu val = env[variable] 10263918Ssaidi@eecs.umich.edu if isinstance(val, bool): 10273918Ssaidi@eecs.umich.edu # Force value to 0/1 10283918Ssaidi@eecs.umich.edu val = int(val) 10293918Ssaidi@eecs.umich.edu elif isinstance(val, str): 10303918Ssaidi@eecs.umich.edu val = '"' + val + '"' 10313918Ssaidi@eecs.umich.edu 10323918Ssaidi@eecs.umich.edu # Sources are variable name & value (packaged in SCons Value nodes) 10333918Ssaidi@eecs.umich.edu return ([target], [Value(variable), Value(val)]) 10343918Ssaidi@eecs.umich.edu 10353918Ssaidi@eecs.umich.educonfig_builder = Builder(emitter = config_emitter, action = config_action) 10363918Ssaidi@eecs.umich.edu 10373940Ssaidi@eecs.umich.edumain.Append(BUILDERS = { 'ConfigFile' : config_builder }) 10383940Ssaidi@eecs.umich.edu 10393940Ssaidi@eecs.umich.edu# libelf build is shared across all configs in the build root. 10403942Ssaidi@eecs.umich.edumain.SConscript('ext/libelf/SConscript', 10413940Ssaidi@eecs.umich.edu variant_dir = joinpath(build_root, 'libelf')) 10423515Ssaidi@eecs.umich.edu 10433918Ssaidi@eecs.umich.edu# gzstream build is shared across all configs in the build root. 10444762Snate@binkert.orgmain.SConscript('ext/gzstream/SConscript', 10453515Ssaidi@eecs.umich.edu variant_dir = joinpath(build_root, 'gzstream')) 10462655Sstever@eecs.umich.edu 10473918Ssaidi@eecs.umich.edu# libfdt build is shared across all configs in the build root. 10483619Sbinkertn@umich.edumain.SConscript('ext/libfdt/SConscript', 1049955SN/A variant_dir = joinpath(build_root, 'libfdt')) 1050955SN/A 10512655Sstever@eecs.umich.edu################################################### 10523918Ssaidi@eecs.umich.edu# 10533619Sbinkertn@umich.edu# This function is used to set up a directory with switching headers 1054955SN/A# 1055955SN/A################################################### 10562655Sstever@eecs.umich.edu 10573918Ssaidi@eecs.umich.edumain['ALL_ISA_LIST'] = all_isa_list 10583619Sbinkertn@umich.edudef make_switching_dir(dname, switch_headers, env): 1059955SN/A # Generate the header. target[0] is the full path of the output 1060955SN/A # header to generate. 'source' is a dummy variable, since we get the 10612655Sstever@eecs.umich.edu # list of ISAs from env['ALL_ISA_LIST']. 10623918Ssaidi@eecs.umich.edu def gen_switch_hdr(target, source, env): 10633683Sstever@eecs.umich.edu fname = str(target[0]) 10642655Sstever@eecs.umich.edu f = open(fname, 'w') 10651869SN/A isa = env['TARGET_ISA'].lower() 10661869SN/A print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname)) 1067 f.close() 1068 1069 # Build SCons Action object. 'varlist' specifies env vars that this 1070 # action depends on; when env['ALL_ISA_LIST'] changes these actions 1071 # should get re-executed. 1072 switch_hdr_action = MakeAction(gen_switch_hdr, 1073 Transform("GENERATE"), varlist=['ALL_ISA_LIST']) 1074 1075 # Instantiate actions for each header 1076 for hdr in switch_headers: 1077 env.Command(hdr, [], switch_hdr_action) 1078Export('make_switching_dir') 1079 1080################################################### 1081# 1082# Define build environments for selected configurations. 1083# 1084################################################### 1085 1086for variant_path in variant_paths: 1087 print "Building in", variant_path 1088 1089 # Make a copy of the build-root environment to use for this config. 1090 env = main.Clone() 1091 env['BUILDDIR'] = variant_path 1092 1093 # variant_dir is the tail component of build path, and is used to 1094 # determine the build parameters (e.g., 'ALPHA_SE') 1095 (build_root, variant_dir) = splitpath(variant_path) 1096 1097 # Set env variables according to the build directory config. 1098 sticky_vars.files = [] 1099 # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 1100 # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 1101 # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 1102 current_vars_file = joinpath(build_root, 'variables', variant_dir) 1103 if isfile(current_vars_file): 1104 sticky_vars.files.append(current_vars_file) 1105 print "Using saved variables file %s" % current_vars_file 1106 else: 1107 # Build dir-specific variables file doesn't exist. 1108 1109 # Make sure the directory is there so we can create it later 1110 opt_dir = dirname(current_vars_file) 1111 if not isdir(opt_dir): 1112 mkdir(opt_dir) 1113 1114 # Get default build variables from source tree. Variables are 1115 # normally determined by name of $VARIANT_DIR, but can be 1116 # overridden by '--default=' arg on command line. 1117 default = GetOption('default') 1118 opts_dir = joinpath(main.root.abspath, 'build_opts') 1119 if default: 1120 default_vars_files = [joinpath(build_root, 'variables', default), 1121 joinpath(opts_dir, default)] 1122 else: 1123 default_vars_files = [joinpath(opts_dir, variant_dir)] 1124 existing_files = filter(isfile, default_vars_files) 1125 if existing_files: 1126 default_vars_file = existing_files[0] 1127 sticky_vars.files.append(default_vars_file) 1128 print "Variables file %s not found,\n using defaults in %s" \ 1129 % (current_vars_file, default_vars_file) 1130 else: 1131 print "Error: cannot find variables file %s or " \ 1132 "default file(s) %s" \ 1133 % (current_vars_file, ' or '.join(default_vars_files)) 1134 Exit(1) 1135 1136 # Apply current variable settings to env 1137 sticky_vars.Update(env) 1138 1139 help_texts["local_vars"] += \ 1140 "Build variables for %s:\n" % variant_dir \ 1141 + sticky_vars.GenerateHelpText(env) 1142 1143 # Process variable settings. 1144 1145 if not have_fenv and env['USE_FENV']: 1146 print "Warning: <fenv.h> not available; " \ 1147 "forcing USE_FENV to False in", variant_dir + "." 1148 env['USE_FENV'] = False 1149 1150 if not env['USE_FENV']: 1151 print "Warning: No IEEE FP rounding mode control in", variant_dir + "." 1152 print " FP results may deviate slightly from other platforms." 1153 1154 if env['EFENCE']: 1155 env.Append(LIBS=['efence']) 1156 1157 # Save sticky variable settings back to current variables file 1158 sticky_vars.Save(current_vars_file, env) 1159 1160 if env['USE_SSE2']: 1161 env.Append(CCFLAGS=['-msse2']) 1162 1163 if have_tcmalloc: 1164 env.Append(LIBS=['tcmalloc_minimal']) 1165 1166 # The src/SConscript file sets up the build rules in 'env' according 1167 # to the configured variables. It returns a list of environments, 1168 # one for each variant build (debug, opt, etc.) 1169 envList = SConscript('src/SConscript', variant_dir = variant_path, 1170 exports = 'env') 1171 1172 # Set up the regression tests for each build. 1173 for e in envList: 1174 SConscript('tests/SConscript', 1175 variant_dir = joinpath(variant_path, 'tests', e.Label), 1176 exports = { 'env' : e }, duplicate = False) 1177 1178# base help text 1179Help(''' 1180Usage: scons [scons options] [build variables] [target(s)] 1181 1182Extra scons options: 1183%(options)s 1184 1185Global build variables: 1186%(global_vars)s 1187 1188%(local_vars)s 1189''' % help_texts) 1190