SConstruct revision 9255
1955SN/A# -*- mode:python -*- 2955SN/A 37816Ssteve.reinhardt@amd.com# Copyright (c) 2011 Advanced Micro Devices, Inc. 45871Snate@binkert.org# Copyright (c) 2009 The Hewlett-Packard Development Company 51762SN/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 28955SN/A# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29955SN/A# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 302665Ssaidi@eecs.umich.edu# 312665Ssaidi@eecs.umich.edu# Authors: Steve Reinhardt 325863Snate@binkert.org# Nathan Binkert 33955SN/A 34955SN/A################################################### 35955SN/A# 36955SN/A# SCons top-level build description (SConstruct) file. 37955SN/A# 388878Ssteve.reinhardt@amd.com# While in this directory ('gem5'), just type 'scons' to build the default 392632Sstever@eecs.umich.edu# configuration (see below), or type 'scons build/<CONFIG>/<binary>' 408878Ssteve.reinhardt@amd.com# to build some other configuration (e.g., 'build/ALPHA/gem5.opt' for 412632Sstever@eecs.umich.edu# the optimized full-system version). 42955SN/A# 438878Ssteve.reinhardt@amd.com# You can build gem5 in a different directory as long as there is a 442632Sstever@eecs.umich.edu# 'build/<CONFIG>' somewhere along the target path. The build system 452761Sstever@eecs.umich.edu# expects that all configs under the same build directory are being 462632Sstever@eecs.umich.edu# built for the same host system. 472632Sstever@eecs.umich.edu# 482632Sstever@eecs.umich.edu# Examples: 492761Sstever@eecs.umich.edu# 502761Sstever@eecs.umich.edu# The following two commands are equivalent. The '-u' option tells 512761Sstever@eecs.umich.edu# scons to search up the directory tree for this SConstruct file. 528878Ssteve.reinhardt@amd.com# % cd <path-to-src>/gem5 ; scons build/ALPHA/gem5.debug 538878Ssteve.reinhardt@amd.com# % cd <path-to-src>/gem5/build/ALPHA; scons -u gem5.debug 542761Sstever@eecs.umich.edu# 552761Sstever@eecs.umich.edu# The following two commands are equivalent and demonstrate building 562761Sstever@eecs.umich.edu# in a directory outside of the source tree. The '-C' option tells 572761Sstever@eecs.umich.edu# scons to chdir to the specified directory to find this SConstruct 582761Sstever@eecs.umich.edu# file. 598878Ssteve.reinhardt@amd.com# % cd <path-to-src>/gem5 ; scons /local/foo/build/ALPHA/gem5.debug 608878Ssteve.reinhardt@amd.com# % cd /local/foo/build/ALPHA; scons -C <path-to-src>/gem5 gem5.debug 612632Sstever@eecs.umich.edu# 622632Sstever@eecs.umich.edu# You can use 'scons -H' to print scons options. If you're in this 638878Ssteve.reinhardt@amd.com# 'gem5' directory (or use -u or -C to tell scons where to find this 648878Ssteve.reinhardt@amd.com# file), you can use 'scons -h' to print all the gem5-specific build 652632Sstever@eecs.umich.edu# options as well. 66955SN/A# 67955SN/A################################################### 68955SN/A 695863Snate@binkert.org# Check for recent-enough Python and SCons versions. 705863Snate@binkert.orgtry: 715863Snate@binkert.org # Really old versions of scons only take two options for the 725863Snate@binkert.org # function, so check once without the revision and once with the 735863Snate@binkert.org # revision, the first instance will fail for stuff other than 745863Snate@binkert.org # 0.98, and the second will fail for 0.98.0 755863Snate@binkert.org EnsureSConsVersion(0, 98) 765863Snate@binkert.org EnsureSConsVersion(0, 98, 1) 775863Snate@binkert.orgexcept SystemExit, e: 785863Snate@binkert.org print """ 795863Snate@binkert.orgFor more details, see: 808878Ssteve.reinhardt@amd.com http://gem5.org/Dependencies 815863Snate@binkert.org""" 825863Snate@binkert.org raise 835863Snate@binkert.org 845863Snate@binkert.org# We ensure the python version early because we have stuff that 855863Snate@binkert.org# requires python 2.4 865863Snate@binkert.orgtry: 875863Snate@binkert.org EnsurePythonVersion(2, 4) 885863Snate@binkert.orgexcept SystemExit, e: 895863Snate@binkert.org print """ 905863Snate@binkert.orgYou can use a non-default installation of the Python interpreter by 915863Snate@binkert.orgeither (1) rearranging your PATH so that scons finds the non-default 925863Snate@binkert.org'python' first or (2) explicitly invoking an alternative interpreter 935863Snate@binkert.orgon the scons script. 945863Snate@binkert.org 955863Snate@binkert.orgFor more details, see: 968878Ssteve.reinhardt@amd.com http://gem5.org/wiki/index.php/Using_a_non-default_Python_installation 975863Snate@binkert.org""" 985863Snate@binkert.org raise 995863Snate@binkert.org 1006654Snate@binkert.org# Global Python includes 101955SN/Aimport os 1025396Ssaidi@eecs.umich.eduimport re 1035863Snate@binkert.orgimport subprocess 1045863Snate@binkert.orgimport sys 1054202Sbinkertn@umich.edu 1065863Snate@binkert.orgfrom os import mkdir, environ 1075863Snate@binkert.orgfrom os.path import abspath, basename, dirname, expanduser, normpath 1085863Snate@binkert.orgfrom os.path import exists, isdir, isfile 1095863Snate@binkert.orgfrom os.path import join as joinpath, split as splitpath 110955SN/A 1116654Snate@binkert.org# SCons includes 1125273Sstever@gmail.comimport SCons 1135871Snate@binkert.orgimport SCons.Node 1145273Sstever@gmail.com 1156655Snate@binkert.orgextra_python_paths = [ 1168878Ssteve.reinhardt@amd.com Dir('src/python').srcnode().abspath, # gem5 includes 1176655Snate@binkert.org Dir('ext/ply').srcnode().abspath, # ply is used by several files 1186655Snate@binkert.org ] 1199219Spower.jg@gmail.com 1206655Snate@binkert.orgsys.path[1:1] = extra_python_paths 1215871Snate@binkert.org 1226654Snate@binkert.orgfrom m5.util import compareVersions, readCommand 1238947Sandreas.hansson@arm.comfrom m5.util.terminal import get_termcap 1245396Ssaidi@eecs.umich.edu 1258120Sgblack@eecs.umich.eduhelp_texts = { 1268120Sgblack@eecs.umich.edu "options" : "", 1278120Sgblack@eecs.umich.edu "global_vars" : "", 1288120Sgblack@eecs.umich.edu "local_vars" : "" 1298120Sgblack@eecs.umich.edu} 1308120Sgblack@eecs.umich.edu 1318120Sgblack@eecs.umich.eduExport("help_texts") 1328120Sgblack@eecs.umich.edu 1338879Ssteve.reinhardt@amd.com 1348879Ssteve.reinhardt@amd.com# There's a bug in scons in that (1) by default, the help texts from 1358879Ssteve.reinhardt@amd.com# AddOption() are supposed to be displayed when you type 'scons -h' 1368879Ssteve.reinhardt@amd.com# and (2) you can override the help displayed by 'scons -h' using the 1378879Ssteve.reinhardt@amd.com# Help() function, but these two features are incompatible: once 1388879Ssteve.reinhardt@amd.com# you've overridden the help text using Help(), there's no way to get 1398879Ssteve.reinhardt@amd.com# at the help texts from AddOptions. See: 1408879Ssteve.reinhardt@amd.com# http://scons.tigris.org/issues/show_bug.cgi?id=2356 1418879Ssteve.reinhardt@amd.com# http://scons.tigris.org/issues/show_bug.cgi?id=2611 1428879Ssteve.reinhardt@amd.com# This hack lets us extract the help text from AddOptions and 1438879Ssteve.reinhardt@amd.com# re-inject it via Help(). Ideally someday this bug will be fixed and 1448879Ssteve.reinhardt@amd.com# we can just use AddOption directly. 1458879Ssteve.reinhardt@amd.comdef AddLocalOption(*args, **kwargs): 1468120Sgblack@eecs.umich.edu col_width = 30 1478120Sgblack@eecs.umich.edu 1488120Sgblack@eecs.umich.edu help = " " + ", ".join(args) 1498120Sgblack@eecs.umich.edu if "help" in kwargs: 1508120Sgblack@eecs.umich.edu length = len(help) 1518120Sgblack@eecs.umich.edu if length >= col_width: 1528120Sgblack@eecs.umich.edu help += "\n" + " " * col_width 1538120Sgblack@eecs.umich.edu else: 1548120Sgblack@eecs.umich.edu help += " " * (col_width - length) 1558120Sgblack@eecs.umich.edu help += kwargs["help"] 1568120Sgblack@eecs.umich.edu help_texts["options"] += help + "\n" 1578120Sgblack@eecs.umich.edu 1588120Sgblack@eecs.umich.edu AddOption(*args, **kwargs) 1598120Sgblack@eecs.umich.edu 1608879Ssteve.reinhardt@amd.comAddLocalOption('--colors', dest='use_colors', action='store_true', 1618879Ssteve.reinhardt@amd.com help="Add color to abbreviated scons output") 1628879Ssteve.reinhardt@amd.comAddLocalOption('--no-colors', dest='use_colors', action='store_false', 1638879Ssteve.reinhardt@amd.com help="Don't add color to abbreviated scons output") 1648879Ssteve.reinhardt@amd.comAddLocalOption('--default', dest='default', type='string', action='store', 1658879Ssteve.reinhardt@amd.com help='Override which build_opts file to use for defaults') 1668879Ssteve.reinhardt@amd.comAddLocalOption('--ignore-style', dest='ignore_style', action='store_true', 1678879Ssteve.reinhardt@amd.com help='Disable style checking hooks') 1689227Sandreas.hansson@arm.comAddLocalOption('--no-lto', dest='no_lto', action='store_true', 1699227Sandreas.hansson@arm.com help='Disable Link-Time Optimization for fast') 1708879Ssteve.reinhardt@amd.comAddLocalOption('--update-ref', dest='update_ref', action='store_true', 1718879Ssteve.reinhardt@amd.com help='Update test reference outputs') 1728879Ssteve.reinhardt@amd.comAddLocalOption('--verbose', dest='verbose', action='store_true', 1738879Ssteve.reinhardt@amd.com help='Print full tool command lines') 1748120Sgblack@eecs.umich.edu 1758947Sandreas.hansson@arm.comtermcap = get_termcap(GetOption('use_colors')) 1767816Ssteve.reinhardt@amd.com 1775871Snate@binkert.org######################################################################## 1785871Snate@binkert.org# 1796121Snate@binkert.org# Set up the main build environment. 1805871Snate@binkert.org# 1815871Snate@binkert.org######################################################################## 1829119Sandreas.hansson@arm.comuse_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 1839119Sandreas.hansson@arm.com 'LIBRARY_PATH', 'PATH', 'PYTHONPATH', 'RANLIB', 'SWIG' ]) 184955SN/A 1855871Snate@binkert.orguse_env = {} 1865871Snate@binkert.orgfor key,val in os.environ.iteritems(): 1875871Snate@binkert.org if key in use_vars or key.startswith("M5"): 1885871Snate@binkert.org use_env[key] = val 189955SN/A 1906121Snate@binkert.orgmain = Environment(ENV=use_env) 1918881Smarc.orr@gmail.commain.Decider('MD5-timestamp') 1926121Snate@binkert.orgmain.root = Dir(".") # The current directory (where this file lives). 1936121Snate@binkert.orgmain.srcdir = Dir("src") # The source directory 1941533SN/A 1959239Sandreas.hansson@arm.commain_dict_keys = main.Dictionary().keys() 1969239Sandreas.hansson@arm.com 1979239Sandreas.hansson@arm.com# Check that we have a C/C++ compiler 1989239Sandreas.hansson@arm.comif not ('CC' in main_dict_keys and 'CXX' in main_dict_keys): 1999239Sandreas.hansson@arm.com print "No C++ compiler installed (package g++ on Ubuntu and RedHat)" 2009239Sandreas.hansson@arm.com Exit(1) 2019239Sandreas.hansson@arm.com 2029239Sandreas.hansson@arm.com# Check that swig is present 2039239Sandreas.hansson@arm.comif not 'SWIG' in main_dict_keys: 2049239Sandreas.hansson@arm.com print "swig is not installed (package swig on Ubuntu and RedHat)" 2059239Sandreas.hansson@arm.com Exit(1) 2069239Sandreas.hansson@arm.com 2076655Snate@binkert.org# add useful python code PYTHONPATH so it can be used by subprocesses 2086655Snate@binkert.org# as well 2096655Snate@binkert.orgmain.AppendENVPath('PYTHONPATH', extra_python_paths) 2106655Snate@binkert.org 2115871Snate@binkert.org######################################################################## 2125871Snate@binkert.org# 2135863Snate@binkert.org# Mercurial Stuff. 2145871Snate@binkert.org# 2158878Ssteve.reinhardt@amd.com# If the gem5 directory is a mercurial repository, we should do some 2165871Snate@binkert.org# extra things. 2175871Snate@binkert.org# 2185871Snate@binkert.org######################################################################## 2195863Snate@binkert.org 2206121Snate@binkert.orghgdir = main.root.Dir(".hg") 2215863Snate@binkert.org 2225871Snate@binkert.orgmercurial_style_message = """ 2238336Ssteve.reinhardt@amd.comYou're missing the gem5 style hook, which automatically checks your code 2248336Ssteve.reinhardt@amd.comagainst the gem5 style rules on hg commit and qrefresh commands. This 2258336Ssteve.reinhardt@amd.comscript will now install the hook in your .hg/hgrc file. 2268336Ssteve.reinhardt@amd.comPress enter to continue, or ctrl-c to abort: """ 2274678Snate@binkert.org 2288336Ssteve.reinhardt@amd.commercurial_style_hook = """ 2298336Ssteve.reinhardt@amd.com# The following lines were automatically added by gem5/SConstruct 2308336Ssteve.reinhardt@amd.com# to provide the gem5 style-checking hooks 2314678Snate@binkert.org[extensions] 2324678Snate@binkert.orgstyle = %s/util/style.py 2334678Snate@binkert.org 2344678Snate@binkert.org[hooks] 2357827Snate@binkert.orgpretxncommit.style = python:style.check_style 2367827Snate@binkert.orgpre-qrefresh.style = python:style.check_style 2378336Ssteve.reinhardt@amd.com# End of SConstruct additions 2384678Snate@binkert.org 2398336Ssteve.reinhardt@amd.com""" % (main.root.abspath) 2408336Ssteve.reinhardt@amd.com 2418336Ssteve.reinhardt@amd.commercurial_lib_not_found = """ 2428336Ssteve.reinhardt@amd.comMercurial libraries cannot be found, ignoring style hook. If 2438336Ssteve.reinhardt@amd.comyou are a gem5 developer, please fix this and run the style 2448336Ssteve.reinhardt@amd.comhook. It is important. 2455871Snate@binkert.org""" 2465871Snate@binkert.org 2478336Ssteve.reinhardt@amd.com# Check for style hook and prompt for installation if it's not there. 2488336Ssteve.reinhardt@amd.com# Skip this if --ignore-style was specified, there's no .hg dir to 2498336Ssteve.reinhardt@amd.com# install a hook in, or there's no interactive terminal to prompt. 2508336Ssteve.reinhardt@amd.comif not GetOption('ignore_style') and hgdir.exists() and sys.stdin.isatty(): 2518336Ssteve.reinhardt@amd.com style_hook = True 2525871Snate@binkert.org try: 2538336Ssteve.reinhardt@amd.com from mercurial import ui 2548336Ssteve.reinhardt@amd.com ui = ui.ui() 2558336Ssteve.reinhardt@amd.com ui.readconfig(hgdir.File('hgrc').abspath) 2568336Ssteve.reinhardt@amd.com style_hook = ui.config('hooks', 'pretxncommit.style', None) and \ 2578336Ssteve.reinhardt@amd.com ui.config('hooks', 'pre-qrefresh.style', None) 2584678Snate@binkert.org except ImportError: 2595871Snate@binkert.org print mercurial_lib_not_found 2604678Snate@binkert.org 2618336Ssteve.reinhardt@amd.com if not style_hook: 2628336Ssteve.reinhardt@amd.com print mercurial_style_message, 2638336Ssteve.reinhardt@amd.com # continue unless user does ctrl-c/ctrl-d etc. 2648336Ssteve.reinhardt@amd.com try: 2658336Ssteve.reinhardt@amd.com raw_input() 2668336Ssteve.reinhardt@amd.com except: 2678336Ssteve.reinhardt@amd.com print "Input exception, exiting scons.\n" 2688336Ssteve.reinhardt@amd.com sys.exit(1) 2698336Ssteve.reinhardt@amd.com hgrc_path = '%s/.hg/hgrc' % main.root.abspath 2708336Ssteve.reinhardt@amd.com print "Adding style hook to", hgrc_path, "\n" 2718336Ssteve.reinhardt@amd.com try: 2728336Ssteve.reinhardt@amd.com hgrc = open(hgrc_path, 'a') 2738336Ssteve.reinhardt@amd.com hgrc.write(mercurial_style_hook) 2748336Ssteve.reinhardt@amd.com hgrc.close() 2758336Ssteve.reinhardt@amd.com except: 2768336Ssteve.reinhardt@amd.com print "Error updating", hgrc_path 2778336Ssteve.reinhardt@amd.com sys.exit(1) 2785871Snate@binkert.org 2796121Snate@binkert.org 280955SN/A################################################### 281955SN/A# 2822632Sstever@eecs.umich.edu# Figure out which configurations to set up based on the path(s) of 2832632Sstever@eecs.umich.edu# the target(s). 284955SN/A# 285955SN/A################################################### 286955SN/A 287955SN/A# Find default configuration & binary. 2888878Ssteve.reinhardt@amd.comDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA/gem5.debug')) 289955SN/A 2902632Sstever@eecs.umich.edu# helper function: find last occurrence of element in list 2912632Sstever@eecs.umich.edudef rfind(l, elt, offs = -1): 2922632Sstever@eecs.umich.edu for i in range(len(l)+offs, 0, -1): 2932632Sstever@eecs.umich.edu if l[i] == elt: 2942632Sstever@eecs.umich.edu return i 2952632Sstever@eecs.umich.edu raise ValueError, "element not found" 2962632Sstever@eecs.umich.edu 2978268Ssteve.reinhardt@amd.com# Take a list of paths (or SCons Nodes) and return a list with all 2988268Ssteve.reinhardt@amd.com# paths made absolute and ~-expanded. Paths will be interpreted 2998268Ssteve.reinhardt@amd.com# relative to the launch directory unless a different root is provided 3008268Ssteve.reinhardt@amd.comdef makePathListAbsolute(path_list, root=GetLaunchDir()): 3018268Ssteve.reinhardt@amd.com return [abspath(joinpath(root, expanduser(str(p)))) 3028268Ssteve.reinhardt@amd.com for p in path_list] 3038268Ssteve.reinhardt@amd.com 3042632Sstever@eecs.umich.edu# Each target must have 'build' in the interior of the path; the 3052632Sstever@eecs.umich.edu# directory below this will determine the build parameters. For 3062632Sstever@eecs.umich.edu# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 3072632Sstever@eecs.umich.edu# recognize that ALPHA_SE specifies the configuration because it 3088268Ssteve.reinhardt@amd.com# follow 'build' in the build path. 3092632Sstever@eecs.umich.edu 3108268Ssteve.reinhardt@amd.com# The funky assignment to "[:]" is needed to replace the list contents 3118268Ssteve.reinhardt@amd.com# in place rather than reassign the symbol to a new list, which 3128268Ssteve.reinhardt@amd.com# doesn't work (obviously!). 3138268Ssteve.reinhardt@amd.comBUILD_TARGETS[:] = makePathListAbsolute(BUILD_TARGETS) 3143718Sstever@eecs.umich.edu 3152634Sstever@eecs.umich.edu# Generate a list of the unique build roots and configs that the 3162634Sstever@eecs.umich.edu# collected targets reference. 3175863Snate@binkert.orgvariant_paths = [] 3182638Sstever@eecs.umich.edubuild_root = None 3198268Ssteve.reinhardt@amd.comfor t in BUILD_TARGETS: 3202632Sstever@eecs.umich.edu path_dirs = t.split('/') 3212632Sstever@eecs.umich.edu try: 3222632Sstever@eecs.umich.edu build_top = rfind(path_dirs, 'build', -2) 3232632Sstever@eecs.umich.edu except: 3242632Sstever@eecs.umich.edu print "Error: no non-leaf 'build' dir found on target path", t 3251858SN/A Exit(1) 3263716Sstever@eecs.umich.edu this_build_root = joinpath('/',*path_dirs[:build_top+1]) 3272638Sstever@eecs.umich.edu if not build_root: 3282638Sstever@eecs.umich.edu build_root = this_build_root 3292638Sstever@eecs.umich.edu else: 3302638Sstever@eecs.umich.edu if this_build_root != build_root: 3312638Sstever@eecs.umich.edu print "Error: build targets not under same build root\n"\ 3322638Sstever@eecs.umich.edu " %s\n %s" % (build_root, this_build_root) 3332638Sstever@eecs.umich.edu Exit(1) 3345863Snate@binkert.org variant_path = joinpath('/',*path_dirs[:build_top+2]) 3355863Snate@binkert.org if variant_path not in variant_paths: 3365863Snate@binkert.org variant_paths.append(variant_path) 337955SN/A 3385341Sstever@gmail.com# Make sure build_root exists (might not if this is the first build there) 3395341Sstever@gmail.comif not isdir(build_root): 3405863Snate@binkert.org mkdir(build_root) 3417756SAli.Saidi@ARM.commain['BUILDROOT'] = build_root 3425341Sstever@gmail.com 3436121Snate@binkert.orgExport('main') 3444494Ssaidi@eecs.umich.edu 3456121Snate@binkert.orgmain.SConsignFile(joinpath(build_root, "sconsign")) 3461105SN/A 3472667Sstever@eecs.umich.edu# Default duplicate option is to use hard links, but this messes up 3482667Sstever@eecs.umich.edu# when you use emacs to edit a file in the target dir, as emacs moves 3492667Sstever@eecs.umich.edu# file to file~ then copies to file, breaking the link. Symbolic 3502667Sstever@eecs.umich.edu# (soft) links work better. 3516121Snate@binkert.orgmain.SetOption('duplicate', 'soft-copy') 3522667Sstever@eecs.umich.edu 3535341Sstever@gmail.com# 3545863Snate@binkert.org# Set up global sticky variables... these are common to an entire build 3555341Sstever@gmail.com# tree (not specific to a particular build like ALPHA_SE) 3565341Sstever@gmail.com# 3575341Sstever@gmail.com 3588120Sgblack@eecs.umich.eduglobal_vars_file = joinpath(build_root, 'variables.global') 3595341Sstever@gmail.com 3608120Sgblack@eecs.umich.eduglobal_vars = Variables(global_vars_file, args=ARGUMENTS) 3615341Sstever@gmail.com 3628120Sgblack@eecs.umich.eduglobal_vars.AddVariables( 3636121Snate@binkert.org ('CC', 'C compiler', environ.get('CC', main['CC'])), 3646121Snate@binkert.org ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 3658980Ssteve.reinhardt@amd.com ('SWIG', 'SWIG tool', environ.get('SWIG', main['SWIG'])), 3665397Ssaidi@eecs.umich.edu ('BATCH', 'Use batch pool for build and tests', False), 3675397Ssaidi@eecs.umich.edu ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 3687727SAli.Saidi@ARM.com ('M5_BUILD_CACHE', 'Cache built objects in this directory', False), 3698268Ssteve.reinhardt@amd.com ('EXTRAS', 'Add extra directories to the compilation', '') 3706168Snate@binkert.org ) 3715341Sstever@gmail.com 3728120Sgblack@eecs.umich.edu# Update main environment with values from ARGUMENTS & global_vars_file 3738120Sgblack@eecs.umich.eduglobal_vars.Update(main) 3748120Sgblack@eecs.umich.eduhelp_texts["global_vars"] += global_vars.GenerateHelpText(main) 3756814Sgblack@eecs.umich.edu 3765863Snate@binkert.org# Save sticky variable settings back to current variables file 3778120Sgblack@eecs.umich.eduglobal_vars.Save(global_vars_file, main) 3785341Sstever@gmail.com 3795863Snate@binkert.org# Parse EXTRAS variable to build list of all directories where we're 3808268Ssteve.reinhardt@amd.com# look for sources etc. This list is exported as extras_dir_list. 3816121Snate@binkert.orgbase_dir = main.srcdir.abspath 3826121Snate@binkert.orgif main['EXTRAS']: 3838268Ssteve.reinhardt@amd.com extras_dir_list = makePathListAbsolute(main['EXTRAS'].split(':')) 3845742Snate@binkert.orgelse: 3855742Snate@binkert.org extras_dir_list = [] 3865341Sstever@gmail.com 3875742Snate@binkert.orgExport('base_dir') 3885742Snate@binkert.orgExport('extras_dir_list') 3895341Sstever@gmail.com 3906017Snate@binkert.org# the ext directory should be on the #includes path 3916121Snate@binkert.orgmain.Append(CPPPATH=[Dir('ext')]) 3926017Snate@binkert.org 3937816Ssteve.reinhardt@amd.comdef strip_build_path(path, env): 3947756SAli.Saidi@ARM.com path = str(path) 3957756SAli.Saidi@ARM.com variant_base = env['BUILDROOT'] + os.path.sep 3967756SAli.Saidi@ARM.com if path.startswith(variant_base): 3977756SAli.Saidi@ARM.com path = path[len(variant_base):] 3987756SAli.Saidi@ARM.com elif path.startswith('build/'): 3997756SAli.Saidi@ARM.com path = path[6:] 4007756SAli.Saidi@ARM.com return path 4017756SAli.Saidi@ARM.com 4027816Ssteve.reinhardt@amd.com# Generate a string of the form: 4037816Ssteve.reinhardt@amd.com# common/path/prefix/src1, src2 -> tgt1, tgt2 4047816Ssteve.reinhardt@amd.com# to print while building. 4057816Ssteve.reinhardt@amd.comclass Transform(object): 4067816Ssteve.reinhardt@amd.com # all specific color settings should be here and nowhere else 4077816Ssteve.reinhardt@amd.com tool_color = termcap.Normal 4087816Ssteve.reinhardt@amd.com pfx_color = termcap.Yellow 4097816Ssteve.reinhardt@amd.com srcs_color = termcap.Yellow + termcap.Bold 4107816Ssteve.reinhardt@amd.com arrow_color = termcap.Blue + termcap.Bold 4117816Ssteve.reinhardt@amd.com tgts_color = termcap.Yellow + termcap.Bold 4127756SAli.Saidi@ARM.com 4137816Ssteve.reinhardt@amd.com def __init__(self, tool, max_sources=99): 4147816Ssteve.reinhardt@amd.com self.format = self.tool_color + (" [%8s] " % tool) \ 4157816Ssteve.reinhardt@amd.com + self.pfx_color + "%s" \ 4167816Ssteve.reinhardt@amd.com + self.srcs_color + "%s" \ 4177816Ssteve.reinhardt@amd.com + self.arrow_color + " -> " \ 4187816Ssteve.reinhardt@amd.com + self.tgts_color + "%s" \ 4197816Ssteve.reinhardt@amd.com + termcap.Normal 4207816Ssteve.reinhardt@amd.com self.max_sources = max_sources 4217816Ssteve.reinhardt@amd.com 4227816Ssteve.reinhardt@amd.com def __call__(self, target, source, env, for_signature=None): 4237816Ssteve.reinhardt@amd.com # truncate source list according to max_sources param 4247816Ssteve.reinhardt@amd.com source = source[0:self.max_sources] 4257816Ssteve.reinhardt@amd.com def strip(f): 4267816Ssteve.reinhardt@amd.com return strip_build_path(str(f), env) 4277816Ssteve.reinhardt@amd.com if len(source) > 0: 4287816Ssteve.reinhardt@amd.com srcs = map(strip, source) 4297816Ssteve.reinhardt@amd.com else: 4307816Ssteve.reinhardt@amd.com srcs = [''] 4317816Ssteve.reinhardt@amd.com tgts = map(strip, target) 4327816Ssteve.reinhardt@amd.com # surprisingly, os.path.commonprefix is a dumb char-by-char string 4337816Ssteve.reinhardt@amd.com # operation that has nothing to do with paths. 4347816Ssteve.reinhardt@amd.com com_pfx = os.path.commonprefix(srcs + tgts) 4357816Ssteve.reinhardt@amd.com com_pfx_len = len(com_pfx) 4367816Ssteve.reinhardt@amd.com if com_pfx: 4377816Ssteve.reinhardt@amd.com # do some cleanup and sanity checking on common prefix 4387816Ssteve.reinhardt@amd.com if com_pfx[-1] == ".": 4397816Ssteve.reinhardt@amd.com # prefix matches all but file extension: ok 4407816Ssteve.reinhardt@amd.com # back up one to change 'foo.cc -> o' to 'foo.cc -> .o' 4417816Ssteve.reinhardt@amd.com com_pfx = com_pfx[0:-1] 4427816Ssteve.reinhardt@amd.com elif com_pfx[-1] == "/": 4437816Ssteve.reinhardt@amd.com # common prefix is directory path: OK 4447816Ssteve.reinhardt@amd.com pass 4457816Ssteve.reinhardt@amd.com else: 4467816Ssteve.reinhardt@amd.com src0_len = len(srcs[0]) 4477816Ssteve.reinhardt@amd.com tgt0_len = len(tgts[0]) 4487816Ssteve.reinhardt@amd.com if src0_len == com_pfx_len: 4497816Ssteve.reinhardt@amd.com # source is a substring of target, OK 4507816Ssteve.reinhardt@amd.com pass 4517816Ssteve.reinhardt@amd.com elif tgt0_len == com_pfx_len: 4527816Ssteve.reinhardt@amd.com # target is a substring of source, need to back up to 4537816Ssteve.reinhardt@amd.com # avoid empty string on RHS of arrow 4547816Ssteve.reinhardt@amd.com sep_idx = com_pfx.rfind(".") 4557816Ssteve.reinhardt@amd.com if sep_idx != -1: 4567816Ssteve.reinhardt@amd.com com_pfx = com_pfx[0:sep_idx] 4577816Ssteve.reinhardt@amd.com else: 4587816Ssteve.reinhardt@amd.com com_pfx = '' 4597816Ssteve.reinhardt@amd.com elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".": 4607816Ssteve.reinhardt@amd.com # still splitting at file extension: ok 4617816Ssteve.reinhardt@amd.com pass 4627816Ssteve.reinhardt@amd.com else: 4637816Ssteve.reinhardt@amd.com # probably a fluke; ignore it 4647816Ssteve.reinhardt@amd.com com_pfx = '' 4657816Ssteve.reinhardt@amd.com # recalculate length in case com_pfx was modified 4667816Ssteve.reinhardt@amd.com com_pfx_len = len(com_pfx) 4677816Ssteve.reinhardt@amd.com def fmt(files): 4687816Ssteve.reinhardt@amd.com f = map(lambda s: s[com_pfx_len:], files) 4697816Ssteve.reinhardt@amd.com return ', '.join(f) 4707816Ssteve.reinhardt@amd.com return self.format % (com_pfx, fmt(srcs), fmt(tgts)) 4717816Ssteve.reinhardt@amd.com 4727816Ssteve.reinhardt@amd.comExport('Transform') 4737816Ssteve.reinhardt@amd.com 4748947Sandreas.hansson@arm.com# enable the regression script to use the termcap 4758947Sandreas.hansson@arm.commain['TERMCAP'] = termcap 4767756SAli.Saidi@ARM.com 4778120Sgblack@eecs.umich.eduif GetOption('verbose'): 4787756SAli.Saidi@ARM.com def MakeAction(action, string, *args, **kwargs): 4797756SAli.Saidi@ARM.com return Action(action, *args, **kwargs) 4807756SAli.Saidi@ARM.comelse: 4817756SAli.Saidi@ARM.com MakeAction = Action 4827816Ssteve.reinhardt@amd.com main['CCCOMSTR'] = Transform("CC") 4837816Ssteve.reinhardt@amd.com main['CXXCOMSTR'] = Transform("CXX") 4847816Ssteve.reinhardt@amd.com main['ASCOMSTR'] = Transform("AS") 4857816Ssteve.reinhardt@amd.com main['SWIGCOMSTR'] = Transform("SWIG") 4867816Ssteve.reinhardt@amd.com main['ARCOMSTR'] = Transform("AR", 0) 4877816Ssteve.reinhardt@amd.com main['LINKCOMSTR'] = Transform("LINK", 0) 4887816Ssteve.reinhardt@amd.com main['RANLIBCOMSTR'] = Transform("RANLIB", 0) 4897816Ssteve.reinhardt@amd.com main['M4COMSTR'] = Transform("M4") 4907816Ssteve.reinhardt@amd.com main['SHCCCOMSTR'] = Transform("SHCC") 4917816Ssteve.reinhardt@amd.com main['SHCXXCOMSTR'] = Transform("SHCXX") 4927756SAli.Saidi@ARM.comExport('MakeAction') 4937756SAli.Saidi@ARM.com 4949227Sandreas.hansson@arm.com# Initialize the Link-Time Optimization (LTO) flags 4959227Sandreas.hansson@arm.commain['LTO_CCFLAGS'] = [] 4969227Sandreas.hansson@arm.commain['LTO_LDFLAGS'] = [] 4979227Sandreas.hansson@arm.com 4986654Snate@binkert.orgCXX_version = readCommand([main['CXX'],'--version'], exception=False) 4996654Snate@binkert.orgCXX_V = readCommand([main['CXX'],'-V'], exception=False) 5005871Snate@binkert.org 5016121Snate@binkert.orgmain['GCC'] = CXX_version and CXX_version.find('g++') >= 0 5026121Snate@binkert.orgmain['SUNCC'] = CXX_V and CXX_V.find('Sun C++') >= 0 5036121Snate@binkert.orgmain['ICC'] = CXX_V and CXX_V.find('Intel') >= 0 5048946Sandreas.hansson@arm.commain['CLANG'] = CXX_version and CXX_version.find('clang') >= 0 5058737Skoansin.tan@gmail.comif main['GCC'] + main['SUNCC'] + main['ICC'] + main['CLANG'] > 1: 5063940Ssaidi@eecs.umich.edu print 'Error: How can we have two at the same time?' 5073918Ssaidi@eecs.umich.edu Exit(1) 5083918Ssaidi@eecs.umich.edu 5091858SN/A# Set up default C++ compiler flags 5106121Snate@binkert.orgif main['GCC']: 5117739Sgblack@eecs.umich.edu main.Append(CCFLAGS=['-pipe']) 5127739Sgblack@eecs.umich.edu main.Append(CCFLAGS=['-fno-strict-aliasing']) 5136143Snate@binkert.org main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef']) 5147618SAli.Saidi@arm.com # Read the GCC version to check for versions with bugs 5157618SAli.Saidi@arm.com # Note CCVERSION doesn't work here because it is run with the CC 5167618SAli.Saidi@arm.com # before we override it from the command line 5177618SAli.Saidi@arm.com gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 5188614Sgblack@eecs.umich.edu main['GCC_VERSION'] = gcc_version 5197618SAli.Saidi@arm.com if not compareVersions(gcc_version, '4.4.1') or \ 5207618SAli.Saidi@arm.com not compareVersions(gcc_version, '4.4.2'): 5217618SAli.Saidi@arm.com print 'Info: Tree vectorizer in GCC 4.4.1 & 4.4.2 is buggy, disabling.' 5227739Sgblack@eecs.umich.edu main.Append(CCFLAGS=['-fno-tree-vectorize']) 5239224Sandreas.hansson@arm.com # c++0x support in gcc is useful already from 4.4, see 5249224Sandreas.hansson@arm.com # http://gcc.gnu.org/projects/cxx0x.html for details 5259224Sandreas.hansson@arm.com if compareVersions(gcc_version, '4.4') >= 0: 5268946Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-std=c++0x']) 5279227Sandreas.hansson@arm.com 5289227Sandreas.hansson@arm.com # LTO support is only really working properly from 4.6 and beyond 5299227Sandreas.hansson@arm.com if compareVersions(gcc_version, '4.6') >= 0: 5309227Sandreas.hansson@arm.com # Add the appropriate Link-Time Optimization (LTO) flags 5319227Sandreas.hansson@arm.com # unless LTO is explicitly turned off. Note that these flags 5329227Sandreas.hansson@arm.com # are only used by the fast target. 5339227Sandreas.hansson@arm.com if not GetOption('no_lto'): 5349227Sandreas.hansson@arm.com # Pass the LTO flag when compiling to produce GIMPLE 5359227Sandreas.hansson@arm.com # output, we merely create the flags here and only append 5369227Sandreas.hansson@arm.com # them later/ 5379227Sandreas.hansson@arm.com main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 5389227Sandreas.hansson@arm.com 5399227Sandreas.hansson@arm.com # Use the same amount of jobs for LTO as we are running 5409227Sandreas.hansson@arm.com # scons with, we hardcode the use of the linker plugin 5419227Sandreas.hansson@arm.com # which requires either gold or GNU ld >= 2.21 5429227Sandreas.hansson@arm.com main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs'), 5439227Sandreas.hansson@arm.com '-fuse-linker-plugin'] 5449227Sandreas.hansson@arm.com 5456121Snate@binkert.orgelif main['ICC']: 5463940Ssaidi@eecs.umich.edu pass #Fix me... add warning flags once we clean up icc warnings 5476121Snate@binkert.orgelif main['SUNCC']: 5487739Sgblack@eecs.umich.edu main.Append(CCFLAGS=['-Qoption ccfe']) 5497739Sgblack@eecs.umich.edu main.Append(CCFLAGS=['-features=gcc']) 5507739Sgblack@eecs.umich.edu main.Append(CCFLAGS=['-features=extensions']) 5517739Sgblack@eecs.umich.edu main.Append(CCFLAGS=['-library=stlport4']) 5527739Sgblack@eecs.umich.edu main.Append(CCFLAGS=['-xar']) 5537739Sgblack@eecs.umich.edu #main.Append(CCFLAGS=['-instances=semiexplicit']) 5548737Skoansin.tan@gmail.comelif main['CLANG']: 5558737Skoansin.tan@gmail.com clang_version_re = re.compile(".* version (\d+\.\d+)") 5568737Skoansin.tan@gmail.com clang_version_match = clang_version_re.match(CXX_version) 5578737Skoansin.tan@gmail.com if (clang_version_match): 5588737Skoansin.tan@gmail.com clang_version = clang_version_match.groups()[0] 5598737Skoansin.tan@gmail.com if compareVersions(clang_version, "2.9") < 0: 5608737Skoansin.tan@gmail.com print 'Error: clang version 2.9 or newer required.' 5618737Skoansin.tan@gmail.com print ' Installed version:', clang_version 5628737Skoansin.tan@gmail.com Exit(1) 5638737Skoansin.tan@gmail.com else: 5648737Skoansin.tan@gmail.com print 'Error: Unable to determine clang version.' 5658737Skoansin.tan@gmail.com Exit(1) 5668737Skoansin.tan@gmail.com 5678737Skoansin.tan@gmail.com main.Append(CCFLAGS=['-pipe']) 5688737Skoansin.tan@gmail.com main.Append(CCFLAGS=['-fno-strict-aliasing']) 5698737Skoansin.tan@gmail.com main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef']) 5708737Skoansin.tan@gmail.com main.Append(CCFLAGS=['-Wno-tautological-compare']) 5718737Skoansin.tan@gmail.com main.Append(CCFLAGS=['-Wno-self-assign']) 5728946Sandreas.hansson@arm.com # Ruby makes frequent use of extraneous parantheses in the printing 5738946Sandreas.hansson@arm.com # of if-statements 5748946Sandreas.hansson@arm.com main.Append(CCFLAGS=['-Wno-parentheses']) 5758946Sandreas.hansson@arm.com 5769224Sandreas.hansson@arm.com # clang 2.9 does not play well with c++0x as it ships with C++ 5779224Sandreas.hansson@arm.com # headers that produce errors, this was fixed in 3.0 5788946Sandreas.hansson@arm.com if compareVersions(clang_version, "3") >= 0: 5798946Sandreas.hansson@arm.com main.Append(CXXFLAGS=['-std=c++0x']) 5803918Ssaidi@eecs.umich.eduelse: 5819068SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + 'Error' + termcap.Normal, 5829068SAli.Saidi@ARM.com print "Don't know what compiler options to use for your compiler." 5839068SAli.Saidi@ARM.com print termcap.Yellow + ' compiler:' + termcap.Normal, main['CXX'] 5849068SAli.Saidi@ARM.com print termcap.Yellow + ' version:' + termcap.Normal, 5859068SAli.Saidi@ARM.com if not CXX_version: 5869068SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + "COMMAND NOT FOUND!" +\ 5879068SAli.Saidi@ARM.com termcap.Normal 5889068SAli.Saidi@ARM.com else: 5899068SAli.Saidi@ARM.com print CXX_version.replace('\n', '<nl>') 5909068SAli.Saidi@ARM.com print " If you're trying to use a compiler other than GCC, ICC, SunCC," 5919068SAli.Saidi@ARM.com print " or clang, there appears to be something wrong with your" 5929068SAli.Saidi@ARM.com print " environment." 5939068SAli.Saidi@ARM.com print " " 5949068SAli.Saidi@ARM.com print " If you are trying to use a compiler other than those listed" 5959068SAli.Saidi@ARM.com print " above you will need to ease fix SConstruct and " 5969068SAli.Saidi@ARM.com print " src/SConscript to support that compiler." 5973918Ssaidi@eecs.umich.edu Exit(1) 5983918Ssaidi@eecs.umich.edu 5996157Snate@binkert.org# Set up common yacc/bison flags (needed for Ruby) 6006157Snate@binkert.orgmain['YACCFLAGS'] = '-d' 6016157Snate@binkert.orgmain['YACCHXXFILESUFFIX'] = '.hh' 6026157Snate@binkert.org 6035397Ssaidi@eecs.umich.edu# Do this after we save setting back, or else we'll tack on an 6045397Ssaidi@eecs.umich.edu# extra 'qdo' every time we run scons. 6056121Snate@binkert.orgif main['BATCH']: 6066121Snate@binkert.org main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 6076121Snate@binkert.org main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 6086121Snate@binkert.org main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 6096121Snate@binkert.org main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 6106121Snate@binkert.org main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 6115397Ssaidi@eecs.umich.edu 6121851SN/Aif sys.platform == 'cygwin': 6131851SN/A # cygwin has some header file issues... 6147739Sgblack@eecs.umich.edu main.Append(CCFLAGS=["-Wno-uninitialized"]) 615955SN/A 6163053Sstever@eecs.umich.edu# Check for SWIG 6176121Snate@binkert.orgif not main.has_key('SWIG'): 6183053Sstever@eecs.umich.edu print 'Error: SWIG utility not found.' 6193053Sstever@eecs.umich.edu print ' Please install (see http://www.swig.org) and retry.' 6203053Sstever@eecs.umich.edu Exit(1) 6213053Sstever@eecs.umich.edu 6223053Sstever@eecs.umich.edu# Check for appropriate SWIG version 6239072Sandreas.hansson@arm.comswig_version = readCommand([main['SWIG'], '-version'], exception='').split() 6243053Sstever@eecs.umich.edu# First 3 words should be "SWIG Version x.y.z" 6254742Sstever@eecs.umich.eduif len(swig_version) < 3 or \ 6264742Sstever@eecs.umich.edu swig_version[0] != 'SWIG' or swig_version[1] != 'Version': 6273053Sstever@eecs.umich.edu print 'Error determining SWIG version.' 6283053Sstever@eecs.umich.edu Exit(1) 6293053Sstever@eecs.umich.edu 6308960Ssteve.reinhardt@amd.commin_swig_version = '1.3.34' 6316654Snate@binkert.orgif compareVersions(swig_version[2], min_swig_version) < 0: 6323053Sstever@eecs.umich.edu print 'Error: SWIG version', min_swig_version, 'or newer required.' 6333053Sstever@eecs.umich.edu print ' Installed version:', swig_version[2] 6343053Sstever@eecs.umich.edu Exit(1) 6353053Sstever@eecs.umich.edu 6362667Sstever@eecs.umich.edu# Set up SWIG flags & scanner 6374554Sbinkertn@umich.eduswig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS') 6386121Snate@binkert.orgmain.Append(SWIGFLAGS=swig_flags) 6392667Sstever@eecs.umich.edu 6404554Sbinkertn@umich.edu# filter out all existing swig scanners, they mess up the dependency 6414554Sbinkertn@umich.edu# stuff for some reason 6424554Sbinkertn@umich.eduscanners = [] 6436121Snate@binkert.orgfor scanner in main['SCANNERS']: 6444554Sbinkertn@umich.edu skeys = scanner.skeys 6454554Sbinkertn@umich.edu if skeys == '.i': 6464554Sbinkertn@umich.edu continue 6474781Snate@binkert.org 6484554Sbinkertn@umich.edu if isinstance(skeys, (list, tuple)) and '.i' in skeys: 6494554Sbinkertn@umich.edu continue 6502667Sstever@eecs.umich.edu 6514554Sbinkertn@umich.edu scanners.append(scanner) 6524554Sbinkertn@umich.edu 6534554Sbinkertn@umich.edu# add the new swig scanner that we like better 6544554Sbinkertn@umich.edufrom SCons.Scanner import ClassicCPP as CPPScanner 6552667Sstever@eecs.umich.eduswig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")' 6564554Sbinkertn@umich.eduscanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re)) 6572667Sstever@eecs.umich.edu 6584554Sbinkertn@umich.edu# replace the scanners list that has what we want 6596121Snate@binkert.orgmain['SCANNERS'] = scanners 6602667Sstever@eecs.umich.edu 6615522Snate@binkert.org# Add a custom Check function to the Configure context so that we can 6625522Snate@binkert.org# figure out if the compiler adds leading underscores to global 6635522Snate@binkert.org# variables. This is needed for the autogenerated asm files that we 6645522Snate@binkert.org# use for embedding the python code. 6655522Snate@binkert.orgdef CheckLeading(context): 6665522Snate@binkert.org context.Message("Checking for leading underscore in global variables...") 6675522Snate@binkert.org # 1) Define a global variable called x from asm so the C compiler 6685522Snate@binkert.org # won't change the symbol at all. 6695522Snate@binkert.org # 2) Declare that variable. 6705522Snate@binkert.org # 3) Use the variable 6715522Snate@binkert.org # 6725522Snate@binkert.org # If the compiler prepends an underscore, this will successfully 6735522Snate@binkert.org # link because the external symbol 'x' will be called '_x' which 6745522Snate@binkert.org # was defined by the asm statement. If the compiler does not 6755522Snate@binkert.org # prepend an underscore, this will not successfully link because 6765522Snate@binkert.org # '_x' will have been defined by assembly, while the C portion of 6775522Snate@binkert.org # the code will be trying to use 'x' 6785522Snate@binkert.org ret = context.TryLink(''' 6795522Snate@binkert.org asm(".globl _x; _x: .byte 0"); 6805522Snate@binkert.org extern int x; 6815522Snate@binkert.org int main() { return x; } 6825522Snate@binkert.org ''', extension=".c") 6835522Snate@binkert.org context.env.Append(LEADING_UNDERSCORE=ret) 6845522Snate@binkert.org context.Result(ret) 6855522Snate@binkert.org return ret 6865522Snate@binkert.org 6879255SAndreas.Sandberg@arm.com# Test for the presence of C++11 static asserts. If the compiler lacks 6889255SAndreas.Sandberg@arm.com# support for static asserts, base/compiler.hh enables a macro that 6899255SAndreas.Sandberg@arm.com# removes any static asserts in the code. 6909255SAndreas.Sandberg@arm.comdef CheckStaticAssert(context): 6919255SAndreas.Sandberg@arm.com context.Message("Checking for C++11 static_assert support...") 6929255SAndreas.Sandberg@arm.com ret = context.TryCompile(''' 6939255SAndreas.Sandberg@arm.com static_assert(1, "This assert is always true"); 6949255SAndreas.Sandberg@arm.com ''', extension=".cc") 6959255SAndreas.Sandberg@arm.com context.env.Append(HAVE_STATIC_ASSERT=ret) 6969255SAndreas.Sandberg@arm.com context.Result(ret) 6979255SAndreas.Sandberg@arm.com return ret 6989255SAndreas.Sandberg@arm.com 6992638Sstever@eecs.umich.edu# Platform-specific configuration. Note again that we assume that all 7002638Sstever@eecs.umich.edu# builds under a given build root run on the same host platform. 7016121Snate@binkert.orgconf = Configure(main, 7023716Sstever@eecs.umich.edu conf_dir = joinpath(build_root, '.scons_config'), 7035522Snate@binkert.org log_file = joinpath(build_root, 'scons_config.log'), 7049255SAndreas.Sandberg@arm.com custom_tests = { 'CheckLeading' : CheckLeading, 7059255SAndreas.Sandberg@arm.com 'CheckStaticAssert' : CheckStaticAssert, 7069255SAndreas.Sandberg@arm.com }) 7075522Snate@binkert.org 7085522Snate@binkert.org# Check for leading underscores. Don't really need to worry either 7095522Snate@binkert.org# way so don't need to check the return code. 7105522Snate@binkert.orgconf.CheckLeading() 7111858SN/A 7129255SAndreas.Sandberg@arm.com# Check for C++11 features we want to use if they exist 7139255SAndreas.Sandberg@arm.comconf.CheckStaticAssert() 7149255SAndreas.Sandberg@arm.com 7155227Ssaidi@eecs.umich.edu# Check if we should compile a 64 bit binary on Mac OS X/Darwin 7165227Ssaidi@eecs.umich.edutry: 7175227Ssaidi@eecs.umich.edu import platform 7185227Ssaidi@eecs.umich.edu uname = platform.uname() 7196654Snate@binkert.org if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0: 7206654Snate@binkert.org if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]): 7217769SAli.Saidi@ARM.com main.Append(CCFLAGS=['-arch', 'x86_64']) 7227769SAli.Saidi@ARM.com main.Append(CFLAGS=['-arch', 'x86_64']) 7237769SAli.Saidi@ARM.com main.Append(LINKFLAGS=['-arch', 'x86_64']) 7247769SAli.Saidi@ARM.com main.Append(ASFLAGS=['-arch', 'x86_64']) 7255227Ssaidi@eecs.umich.eduexcept: 7265227Ssaidi@eecs.umich.edu pass 7275227Ssaidi@eecs.umich.edu 7285204Sstever@gmail.com# Recent versions of scons substitute a "Null" object for Configure() 7295204Sstever@gmail.com# when configuration isn't necessary, e.g., if the "--help" option is 7305204Sstever@gmail.com# present. Unfortuantely this Null object always returns false, 7315204Sstever@gmail.com# breaking all our configuration checks. We replace it with our own 7325204Sstever@gmail.com# more optimistic null object that returns True instead. 7335204Sstever@gmail.comif not conf: 7345204Sstever@gmail.com def NullCheck(*args, **kwargs): 7355204Sstever@gmail.com return True 7365204Sstever@gmail.com 7375204Sstever@gmail.com class NullConf: 7385204Sstever@gmail.com def __init__(self, env): 7395204Sstever@gmail.com self.env = env 7405204Sstever@gmail.com def Finish(self): 7415204Sstever@gmail.com return self.env 7425204Sstever@gmail.com def __getattr__(self, mname): 7435204Sstever@gmail.com return NullCheck 7445204Sstever@gmail.com 7456121Snate@binkert.org conf = NullConf(main) 7465204Sstever@gmail.com 7473118Sstever@eecs.umich.edu# Find Python include and library directories for embedding the 7483118Sstever@eecs.umich.edu# interpreter. For consistency, we will use the same Python 7493118Sstever@eecs.umich.edu# installation used to run scons (and thus this script). If you want 7503118Sstever@eecs.umich.edu# to link in an alternate version, see above for instructions on how 7513118Sstever@eecs.umich.edu# to invoke scons with a different copy of the Python interpreter. 7525863Snate@binkert.orgfrom distutils import sysconfig 7533118Sstever@eecs.umich.edu 7545863Snate@binkert.orgpy_getvar = sysconfig.get_config_var 7553118Sstever@eecs.umich.edu 7567457Snate@binkert.orgpy_debug = getattr(sys, 'pydebug', False) 7577457Snate@binkert.orgpy_version = 'python' + py_getvar('VERSION') + (py_debug and "_d" or "") 7585863Snate@binkert.org 7595863Snate@binkert.orgpy_general_include = sysconfig.get_python_inc() 7605863Snate@binkert.orgpy_platform_include = sysconfig.get_python_inc(plat_specific=True) 7615863Snate@binkert.orgpy_includes = [ py_general_include ] 7625863Snate@binkert.orgif py_platform_include != py_general_include: 7635863Snate@binkert.org py_includes.append(py_platform_include) 7645863Snate@binkert.org 7656003Snate@binkert.orgpy_lib_path = [ py_getvar('LIBDIR') ] 7665863Snate@binkert.org# add the prefix/lib/pythonX.Y/config dir, but only if there is no 7675863Snate@binkert.org# shared library in prefix/lib/. 7685863Snate@binkert.orgif not py_getvar('Py_ENABLE_SHARED'): 7696120Snate@binkert.org py_lib_path.append(py_getvar('LIBPL')) 7705863Snate@binkert.org 7715863Snate@binkert.orgpy_libs = [] 7725863Snate@binkert.orgfor lib in py_getvar('LIBS').split() + py_getvar('SYSLIBS').split(): 7738655Sandreas.hansson@arm.com if not lib.startswith('-l'): 7748655Sandreas.hansson@arm.com # Python requires some special flags to link (e.g. -framework 7758655Sandreas.hansson@arm.com # common on OS X systems), assume appending preserves order 7768655Sandreas.hansson@arm.com main.Append(LINKFLAGS=[lib]) 7778655Sandreas.hansson@arm.com else: 7788655Sandreas.hansson@arm.com lib = lib[2:] 7798655Sandreas.hansson@arm.com if lib not in py_libs: 7808655Sandreas.hansson@arm.com py_libs.append(lib) 7816120Snate@binkert.orgpy_libs.append(py_version) 7825863Snate@binkert.org 7836121Snate@binkert.orgmain.Append(CPPPATH=py_includes) 7846121Snate@binkert.orgmain.Append(LIBPATH=py_lib_path) 7855863Snate@binkert.org 7867727SAli.Saidi@ARM.com# Cache build files in the supplied directory. 7877727SAli.Saidi@ARM.comif main['M5_BUILD_CACHE']: 7887727SAli.Saidi@ARM.com print 'Using build cache located at', main['M5_BUILD_CACHE'] 7897727SAli.Saidi@ARM.com CacheDir(main['M5_BUILD_CACHE']) 7907727SAli.Saidi@ARM.com 7917727SAli.Saidi@ARM.com 7925863Snate@binkert.org# verify that this stuff works 7933118Sstever@eecs.umich.eduif not conf.CheckHeader('Python.h', '<>'): 7945863Snate@binkert.org print "Error: can't find Python.h header in", py_includes 7959239Sandreas.hansson@arm.com print "Install Python headers (package python-dev on Ubuntu and RedHat)" 7963118Sstever@eecs.umich.edu Exit(1) 7973118Sstever@eecs.umich.edu 7985863Snate@binkert.orgfor lib in py_libs: 7995863Snate@binkert.org if not conf.CheckLib(lib): 8005863Snate@binkert.org print "Error: can't find library %s required by python" % lib 8015863Snate@binkert.org Exit(1) 8023118Sstever@eecs.umich.edu 8033483Ssaidi@eecs.umich.edu# On Solaris you need to use libsocket for socket ops 8043494Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 8053494Ssaidi@eecs.umich.edu if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 8063483Ssaidi@eecs.umich.edu print "Can't find library with socket calls (e.g. accept())" 8073483Ssaidi@eecs.umich.edu Exit(1) 8083483Ssaidi@eecs.umich.edu 8093053Sstever@eecs.umich.edu# Check for zlib. If the check passes, libz will be automatically 8103053Sstever@eecs.umich.edu# added to the LIBS environment variable. 8113918Ssaidi@eecs.umich.eduif not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 8123053Sstever@eecs.umich.edu print 'Error: did not find needed zlib compression library '\ 8133053Sstever@eecs.umich.edu 'and/or zlib.h header file.' 8143053Sstever@eecs.umich.edu print ' Please install zlib and try again.' 8153053Sstever@eecs.umich.edu Exit(1) 8163053Sstever@eecs.umich.edu 8177840Snate@binkert.org# Check for librt. 8187865Sgblack@eecs.umich.eduhave_posix_clock = \ 8197865Sgblack@eecs.umich.edu conf.CheckLibWithHeader(None, 'time.h', 'C', 8207865Sgblack@eecs.umich.edu 'clock_nanosleep(0,0,NULL,NULL);') or \ 8217865Sgblack@eecs.umich.edu conf.CheckLibWithHeader('rt', 'time.h', 'C', 8227865Sgblack@eecs.umich.edu 'clock_nanosleep(0,0,NULL,NULL);') 8237840Snate@binkert.org 8249045SAli.Saidi@ARM.comif conf.CheckLib('tcmalloc_minimal'): 8259045SAli.Saidi@ARM.com have_tcmalloc = True 8269045SAli.Saidi@ARM.comelse: 8279045SAli.Saidi@ARM.com have_tcmalloc = False 8289045SAli.Saidi@ARM.com print termcap.Yellow + termcap.Bold + \ 8299045SAli.Saidi@ARM.com "You can get a 12% performance improvement by installing tcmalloc "\ 8309071Sandreas.hansson@arm.com "(libgoogle-perftools-dev package on Ubuntu or RedHat)." + \ 8319071Sandreas.hansson@arm.com termcap.Normal 8329045SAli.Saidi@ARM.com 8337840Snate@binkert.orgif not have_posix_clock: 8347840Snate@binkert.org print "Can't find library for POSIX clocks." 8357840Snate@binkert.org 8361858SN/A# Check for <fenv.h> (C99 FP environment control) 8371858SN/Ahave_fenv = conf.CheckHeader('fenv.h', '<>') 8381858SN/Aif not have_fenv: 8391858SN/A print "Warning: Header file <fenv.h> not found." 8401858SN/A print " This host has no IEEE FP rounding mode control." 8411858SN/A 8425863Snate@binkert.org###################################################################### 8435863Snate@binkert.org# 8445863Snate@binkert.org# Finish the configuration 8455863Snate@binkert.org# 8466121Snate@binkert.orgmain = conf.Finish() 8471858SN/A 8485863Snate@binkert.org###################################################################### 8495863Snate@binkert.org# 8505863Snate@binkert.org# Collect all non-global variables 8515863Snate@binkert.org# 8525863Snate@binkert.org 8532139SN/A# Define the universe of supported ISAs 8544202Sbinkertn@umich.eduall_isa_list = [ ] 8554202Sbinkertn@umich.eduExport('all_isa_list') 8562139SN/A 8576994Snate@binkert.orgclass CpuModel(object): 8586994Snate@binkert.org '''The CpuModel class encapsulates everything the ISA parser needs to 8596994Snate@binkert.org know about a particular CPU model.''' 8606994Snate@binkert.org 8616994Snate@binkert.org # Dict of available CPU model objects. Accessible as CpuModel.dict. 8626994Snate@binkert.org dict = {} 8636994Snate@binkert.org list = [] 8646994Snate@binkert.org defaults = [] 8656994Snate@binkert.org 8666994Snate@binkert.org # Constructor. Automatically adds models to CpuModel.dict. 8676994Snate@binkert.org def __init__(self, name, filename, includes, strings, default=False): 8686994Snate@binkert.org self.name = name # name of model 8696994Snate@binkert.org self.filename = filename # filename for output exec code 8706994Snate@binkert.org self.includes = includes # include files needed in exec file 8716994Snate@binkert.org # The 'strings' dict holds all the per-CPU symbols we can 8726994Snate@binkert.org # substitute into templates etc. 8736994Snate@binkert.org self.strings = strings 8746994Snate@binkert.org 8756994Snate@binkert.org # This cpu is enabled by default 8766994Snate@binkert.org self.default = default 8776994Snate@binkert.org 8786994Snate@binkert.org # Add self to dict 8796994Snate@binkert.org if name in CpuModel.dict: 8806994Snate@binkert.org raise AttributeError, "CpuModel '%s' already registered" % name 8816994Snate@binkert.org CpuModel.dict[name] = self 8826994Snate@binkert.org CpuModel.list.append(name) 8836994Snate@binkert.org 8846994Snate@binkert.orgExport('CpuModel') 8852155SN/A 8865863Snate@binkert.org# Sticky variables get saved in the variables file so they persist from 8871869SN/A# one invocation to the next (unless overridden, in which case the new 8881869SN/A# value becomes sticky). 8895863Snate@binkert.orgsticky_vars = Variables(args=ARGUMENTS) 8905863Snate@binkert.orgExport('sticky_vars') 8914202Sbinkertn@umich.edu 8926108Snate@binkert.org# Sticky variables that should be exported 8936108Snate@binkert.orgexport_vars = [] 8946108Snate@binkert.orgExport('export_vars') 8956108Snate@binkert.org 8969219Spower.jg@gmail.com# For Ruby 8979219Spower.jg@gmail.comall_protocols = [] 8989219Spower.jg@gmail.comExport('all_protocols') 8999219Spower.jg@gmail.comprotocol_dirs = [] 9009219Spower.jg@gmail.comExport('protocol_dirs') 9019219Spower.jg@gmail.comslicc_includes = [] 9029219Spower.jg@gmail.comExport('slicc_includes') 9039219Spower.jg@gmail.com 9044202Sbinkertn@umich.edu# Walk the tree and execute all SConsopts scripts that wil add to the 9055863Snate@binkert.org# above variables 9068474Sgblack@eecs.umich.eduif not GetOption('verbose'): 9078474Sgblack@eecs.umich.edu print "Reading SConsopts" 9085742Snate@binkert.orgfor bdir in [ base_dir ] + extras_dir_list: 9098268Ssteve.reinhardt@amd.com if not isdir(bdir): 9108268Ssteve.reinhardt@amd.com print "Error: directory '%s' does not exist" % bdir 9118268Ssteve.reinhardt@amd.com Exit(1) 9125742Snate@binkert.org for root, dirs, files in os.walk(bdir): 9135341Sstever@gmail.com if 'SConsopts' in files: 9148474Sgblack@eecs.umich.edu if GetOption('verbose'): 9158474Sgblack@eecs.umich.edu print "Reading", joinpath(root, 'SConsopts') 9165342Sstever@gmail.com SConscript(joinpath(root, 'SConsopts')) 9174202Sbinkertn@umich.edu 9184202Sbinkertn@umich.eduall_isa_list.sort() 9194202Sbinkertn@umich.edu 9205863Snate@binkert.orgsticky_vars.AddVariables( 9215863Snate@binkert.org EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 9226994Snate@binkert.org ListVariable('CPU_MODELS', 'CPU models', 9236994Snate@binkert.org sorted(n for n,m in CpuModel.dict.iteritems() if m.default), 9246994Snate@binkert.org sorted(CpuModel.list)), 9255863Snate@binkert.org BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 9265863Snate@binkert.org False), 9275863Snate@binkert.org BoolVariable('SS_COMPATIBLE_FP', 9285863Snate@binkert.org 'Make floating-point results compatible with SimpleScalar', 9295863Snate@binkert.org False), 9305863Snate@binkert.org BoolVariable('USE_SSE2', 9315863Snate@binkert.org 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 9325863Snate@binkert.org False), 9337840Snate@binkert.org BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), 9345863Snate@binkert.org BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 9355952Ssaidi@eecs.umich.edu BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False), 9369219Spower.jg@gmail.com EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None', 9379219Spower.jg@gmail.com all_protocols), 9381869SN/A ) 9391858SN/A 9405863Snate@binkert.org# These variables get exported to #defines in config/*.hh (see src/SConscript). 9419044SAli.Saidi@ARM.comexport_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 9429219Spower.jg@gmail.com 'TARGET_ISA', 'CP_ANNOTATE', 'USE_POSIX_CLOCK', 'PROTOCOL', 9439255SAndreas.Sandberg@arm.com 'HAVE_STATIC_ASSERT'] 9441858SN/A 945955SN/A################################################### 946955SN/A# 9471869SN/A# Define a SCons builder for configuration flag headers. 9481869SN/A# 9491869SN/A################################################### 9501869SN/A 9511869SN/A# This function generates a config header file that #defines the 9525863Snate@binkert.org# variable symbol to the current variable setting (0 or 1). The source 9535863Snate@binkert.org# operands are the name of the variable and a Value node containing the 9545863Snate@binkert.org# value of the variable. 9551869SN/Adef build_config_file(target, source, env): 9565863Snate@binkert.org (variable, value) = [s.get_contents() for s in source] 9571869SN/A f = file(str(target[0]), 'w') 9585863Snate@binkert.org print >> f, '#define', variable, value 9591869SN/A f.close() 9601869SN/A return None 9611869SN/A 9621869SN/A# Combine the two functions into a scons Action object. 9638483Sgblack@eecs.umich.educonfig_action = MakeAction(build_config_file, Transform("CONFIG H", 2)) 9641869SN/A 9651869SN/A# The emitter munges the source & target node lists to reflect what 9661869SN/A# we're really doing. 9671869SN/Adef config_emitter(target, source, env): 9685863Snate@binkert.org # extract variable name from Builder arg 9695863Snate@binkert.org variable = str(target[0]) 9701869SN/A # True target is config header file 9715863Snate@binkert.org target = joinpath('config', variable.lower() + '.hh') 9725863Snate@binkert.org val = env[variable] 9733356Sbinkertn@umich.edu if isinstance(val, bool): 9743356Sbinkertn@umich.edu # Force value to 0/1 9753356Sbinkertn@umich.edu val = int(val) 9763356Sbinkertn@umich.edu elif isinstance(val, str): 9773356Sbinkertn@umich.edu val = '"' + val + '"' 9784781Snate@binkert.org 9795863Snate@binkert.org # Sources are variable name & value (packaged in SCons Value nodes) 9805863Snate@binkert.org return ([target], [Value(variable), Value(val)]) 9811869SN/A 9821869SN/Aconfig_builder = Builder(emitter = config_emitter, action = config_action) 9831869SN/A 9846121Snate@binkert.orgmain.Append(BUILDERS = { 'ConfigFile' : config_builder }) 9851869SN/A 9862638Sstever@eecs.umich.edu# libelf build is shared across all configs in the build root. 9876121Snate@binkert.orgmain.SConscript('ext/libelf/SConscript', 9886121Snate@binkert.org variant_dir = joinpath(build_root, 'libelf')) 9892638Sstever@eecs.umich.edu 9905749Scws3k@cs.virginia.edu# gzstream build is shared across all configs in the build root. 9916121Snate@binkert.orgmain.SConscript('ext/gzstream/SConscript', 9926121Snate@binkert.org variant_dir = joinpath(build_root, 'gzstream')) 9935749Scws3k@cs.virginia.edu 9941869SN/A################################################### 9951869SN/A# 9963546Sgblack@eecs.umich.edu# This function is used to set up a directory with switching headers 9973546Sgblack@eecs.umich.edu# 9983546Sgblack@eecs.umich.edu################################################### 9993546Sgblack@eecs.umich.edu 10006121Snate@binkert.orgmain['ALL_ISA_LIST'] = all_isa_list 10015863Snate@binkert.orgdef make_switching_dir(dname, switch_headers, env): 10023546Sgblack@eecs.umich.edu # Generate the header. target[0] is the full path of the output 10033546Sgblack@eecs.umich.edu # header to generate. 'source' is a dummy variable, since we get the 10043546Sgblack@eecs.umich.edu # list of ISAs from env['ALL_ISA_LIST']. 10053546Sgblack@eecs.umich.edu def gen_switch_hdr(target, source, env): 10064781Snate@binkert.org fname = str(target[0]) 10074781Snate@binkert.org f = open(fname, 'w') 10086658Snate@binkert.org isa = env['TARGET_ISA'].lower() 10096658Snate@binkert.org print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname)) 10104781Snate@binkert.org f.close() 10113546Sgblack@eecs.umich.edu 10123546Sgblack@eecs.umich.edu # Build SCons Action object. 'varlist' specifies env vars that this 10133546Sgblack@eecs.umich.edu # action depends on; when env['ALL_ISA_LIST'] changes these actions 10143546Sgblack@eecs.umich.edu # should get re-executed. 10157756SAli.Saidi@ARM.com switch_hdr_action = MakeAction(gen_switch_hdr, 10167816Ssteve.reinhardt@amd.com Transform("GENERATE"), varlist=['ALL_ISA_LIST']) 10173546Sgblack@eecs.umich.edu 10183546Sgblack@eecs.umich.edu # Instantiate actions for each header 10193546Sgblack@eecs.umich.edu for hdr in switch_headers: 10203546Sgblack@eecs.umich.edu env.Command(hdr, [], switch_hdr_action) 10214202Sbinkertn@umich.eduExport('make_switching_dir') 10223546Sgblack@eecs.umich.edu 10233546Sgblack@eecs.umich.edu################################################### 10243546Sgblack@eecs.umich.edu# 1025955SN/A# Define build environments for selected configurations. 1026955SN/A# 1027955SN/A################################################### 1028955SN/A 10295863Snate@binkert.orgfor variant_path in variant_paths: 10305863Snate@binkert.org print "Building in", variant_path 10315343Sstever@gmail.com 10325343Sstever@gmail.com # Make a copy of the build-root environment to use for this config. 10336121Snate@binkert.org env = main.Clone() 10345863Snate@binkert.org env['BUILDDIR'] = variant_path 10354773Snate@binkert.org 10365863Snate@binkert.org # variant_dir is the tail component of build path, and is used to 10372632Sstever@eecs.umich.edu # determine the build parameters (e.g., 'ALPHA_SE') 10385863Snate@binkert.org (build_root, variant_dir) = splitpath(variant_path) 10392023SN/A 10405863Snate@binkert.org # Set env variables according to the build directory config. 10415863Snate@binkert.org sticky_vars.files = [] 10425863Snate@binkert.org # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 10435863Snate@binkert.org # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 10445863Snate@binkert.org # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 10455863Snate@binkert.org current_vars_file = joinpath(build_root, 'variables', variant_dir) 10465863Snate@binkert.org if isfile(current_vars_file): 10475863Snate@binkert.org sticky_vars.files.append(current_vars_file) 10485863Snate@binkert.org print "Using saved variables file %s" % current_vars_file 10492632Sstever@eecs.umich.edu else: 10505863Snate@binkert.org # Build dir-specific variables file doesn't exist. 10512023SN/A 10522632Sstever@eecs.umich.edu # Make sure the directory is there so we can create it later 10535863Snate@binkert.org opt_dir = dirname(current_vars_file) 10545342Sstever@gmail.com if not isdir(opt_dir): 10555863Snate@binkert.org mkdir(opt_dir) 10562632Sstever@eecs.umich.edu 10575863Snate@binkert.org # Get default build variables from source tree. Variables are 10585863Snate@binkert.org # normally determined by name of $VARIANT_DIR, but can be 10598267Ssteve.reinhardt@amd.com # overridden by '--default=' arg on command line. 10608120Sgblack@eecs.umich.edu default = GetOption('default') 10618267Ssteve.reinhardt@amd.com opts_dir = joinpath(main.root.abspath, 'build_opts') 10628267Ssteve.reinhardt@amd.com if default: 10638267Ssteve.reinhardt@amd.com default_vars_files = [joinpath(build_root, 'variables', default), 10648267Ssteve.reinhardt@amd.com joinpath(opts_dir, default)] 10658267Ssteve.reinhardt@amd.com else: 10668267Ssteve.reinhardt@amd.com default_vars_files = [joinpath(opts_dir, variant_dir)] 10678267Ssteve.reinhardt@amd.com existing_files = filter(isfile, default_vars_files) 10688267Ssteve.reinhardt@amd.com if existing_files: 10698267Ssteve.reinhardt@amd.com default_vars_file = existing_files[0] 10705863Snate@binkert.org sticky_vars.files.append(default_vars_file) 10715863Snate@binkert.org print "Variables file %s not found,\n using defaults in %s" \ 10725863Snate@binkert.org % (current_vars_file, default_vars_file) 10732632Sstever@eecs.umich.edu else: 10748267Ssteve.reinhardt@amd.com print "Error: cannot find variables file %s or " \ 10758267Ssteve.reinhardt@amd.com "default file(s) %s" \ 10768267Ssteve.reinhardt@amd.com % (current_vars_file, ' or '.join(default_vars_files)) 10772632Sstever@eecs.umich.edu Exit(1) 10781888SN/A 10795863Snate@binkert.org # Apply current variable settings to env 10805863Snate@binkert.org sticky_vars.Update(env) 10811858SN/A 10828120Sgblack@eecs.umich.edu help_texts["local_vars"] += \ 10838120Sgblack@eecs.umich.edu "Build variables for %s:\n" % variant_dir \ 10847756SAli.Saidi@ARM.com + sticky_vars.GenerateHelpText(env) 10852598SN/A 10865863Snate@binkert.org # Process variable settings. 10871858SN/A 10881858SN/A if not have_fenv and env['USE_FENV']: 10891858SN/A print "Warning: <fenv.h> not available; " \ 10905863Snate@binkert.org "forcing USE_FENV to False in", variant_dir + "." 10911858SN/A env['USE_FENV'] = False 10921858SN/A 10931858SN/A if not env['USE_FENV']: 10945863Snate@binkert.org print "Warning: No IEEE FP rounding mode control in", variant_dir + "." 10951871SN/A print " FP results may deviate slightly from other platforms." 10961858SN/A 10971858SN/A if env['EFENCE']: 10981858SN/A env.Append(LIBS=['efence']) 10991858SN/A 11005863Snate@binkert.org # Save sticky variable settings back to current variables file 11015863Snate@binkert.org sticky_vars.Save(current_vars_file, env) 11021869SN/A 11031965SN/A if env['USE_SSE2']: 11047739Sgblack@eecs.umich.edu env.Append(CCFLAGS=['-msse2']) 11051965SN/A 11069045SAli.Saidi@ARM.com if have_tcmalloc: 11079045SAli.Saidi@ARM.com env.Append(LIBS=['tcmalloc_minimal']) 11089045SAli.Saidi@ARM.com 11092761Sstever@eecs.umich.edu # The src/SConscript file sets up the build rules in 'env' according 11105863Snate@binkert.org # to the configured variables. It returns a list of environments, 11111869SN/A # one for each variant build (debug, opt, etc.) 11125863Snate@binkert.org envList = SConscript('src/SConscript', variant_dir = variant_path, 11132667Sstever@eecs.umich.edu exports = 'env') 11141869SN/A 11151869SN/A # Set up the regression tests for each build. 11162929Sktlim@umich.edu for e in envList: 11172929Sktlim@umich.edu SConscript('tests/SConscript', 11185863Snate@binkert.org variant_dir = joinpath(variant_path, 'tests', e.Label), 11192929Sktlim@umich.edu exports = { 'env' : e }, duplicate = False) 1120955SN/A 11218120Sgblack@eecs.umich.edu# base help text 11228120Sgblack@eecs.umich.eduHelp(''' 11238120Sgblack@eecs.umich.eduUsage: scons [scons options] [build variables] [target(s)] 11248120Sgblack@eecs.umich.edu 11258120Sgblack@eecs.umich.eduExtra scons options: 11268120Sgblack@eecs.umich.edu%(options)s 11278120Sgblack@eecs.umich.edu 11288120Sgblack@eecs.umich.eduGlobal build variables: 11298120Sgblack@eecs.umich.edu%(global_vars)s 11308120Sgblack@eecs.umich.edu 11318120Sgblack@eecs.umich.edu%(local_vars)s 11328120Sgblack@eecs.umich.edu''' % help_texts) 1133