SConstruct revision 6168
1955SN/A# -*- mode:python -*- 2955SN/A 31762SN/A# Copyright (c) 2009 The Hewlett-Packard Development Company 4955SN/A# Copyright (c) 2004-2005 The Regents of The University of Michigan 5955SN/A# All rights reserved. 6955SN/A# 7955SN/A# Redistribution and use in source and binary forms, with or without 8955SN/A# modification, are permitted provided that the following conditions are 9955SN/A# met: redistributions of source code must retain the above copyright 10955SN/A# notice, this list of conditions and the following disclaimer; 11955SN/A# redistributions in binary form must reproduce the above copyright 12955SN/A# notice, this list of conditions and the following disclaimer in the 13955SN/A# documentation and/or other materials provided with the distribution; 14955SN/A# neither the name of the copyright holders nor the names of its 15955SN/A# contributors may be used to endorse or promote products derived from 16955SN/A# this software without specific prior written permission. 17955SN/A# 18955SN/A# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19955SN/A# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20955SN/A# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21955SN/A# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22955SN/A# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23955SN/A# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24955SN/A# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25955SN/A# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26955SN/A# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27955SN/A# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 282665Ssaidi@eecs.umich.edu# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 292665Ssaidi@eecs.umich.edu# 30955SN/A# Authors: Steve Reinhardt 31955SN/A# Nathan Binkert 32955SN/A 33955SN/A################################################### 34955SN/A# 352632Sstever@eecs.umich.edu# SCons top-level build description (SConstruct) file. 362632Sstever@eecs.umich.edu# 372632Sstever@eecs.umich.edu# While in this directory ('m5'), just type 'scons' to build the default 382632Sstever@eecs.umich.edu# configuration (see below), or type 'scons build/<CONFIG>/<binary>' 39955SN/A# to build some other configuration (e.g., 'build/ALPHA_FS/m5.opt' for 402632Sstever@eecs.umich.edu# the optimized full-system version). 412632Sstever@eecs.umich.edu# 422761Sstever@eecs.umich.edu# You can build M5 in a different directory as long as there is a 432632Sstever@eecs.umich.edu# 'build/<CONFIG>' somewhere along the target path. The build system 442632Sstever@eecs.umich.edu# expects that all configs under the same build directory are being 452632Sstever@eecs.umich.edu# built for the same host system. 462761Sstever@eecs.umich.edu# 472761Sstever@eecs.umich.edu# Examples: 482761Sstever@eecs.umich.edu# 492632Sstever@eecs.umich.edu# The following two commands are equivalent. The '-u' option tells 502632Sstever@eecs.umich.edu# scons to search up the directory tree for this SConstruct file. 512761Sstever@eecs.umich.edu# % cd <path-to-src>/m5 ; scons build/ALPHA_FS/m5.debug 522761Sstever@eecs.umich.edu# % cd <path-to-src>/m5/build/ALPHA_FS; scons -u m5.debug 532761Sstever@eecs.umich.edu# 542761Sstever@eecs.umich.edu# The following two commands are equivalent and demonstrate building 552761Sstever@eecs.umich.edu# in a directory outside of the source tree. The '-C' option tells 562632Sstever@eecs.umich.edu# scons to chdir to the specified directory to find this SConstruct 572632Sstever@eecs.umich.edu# file. 582632Sstever@eecs.umich.edu# % cd <path-to-src>/m5 ; scons /local/foo/build/ALPHA_FS/m5.debug 592632Sstever@eecs.umich.edu# % cd /local/foo/build/ALPHA_FS; scons -C <path-to-src>/m5 m5.debug 602632Sstever@eecs.umich.edu# 612632Sstever@eecs.umich.edu# You can use 'scons -H' to print scons options. If you're in this 622632Sstever@eecs.umich.edu# 'm5' directory (or use -u or -C to tell scons where to find this 63955SN/A# file), you can use 'scons -h' to print all the M5-specific build 64955SN/A# options as well. 65955SN/A# 66955SN/A################################################### 67955SN/A 683918Ssaidi@eecs.umich.edu# Check for recent-enough Python and SCons versions. 694202Sbinkertn@umich.edutry: 704678Snate@binkert.org # Really old versions of scons only take two options for the 71955SN/A # function, so check once without the revision and once with the 722656Sstever@eecs.umich.edu # revision, the first instance will fail for stuff other than 732656Sstever@eecs.umich.edu # 0.98, and the second will fail for 0.98.0 742656Sstever@eecs.umich.edu EnsureSConsVersion(0, 98) 752656Sstever@eecs.umich.edu EnsureSConsVersion(0, 98, 1) 762656Sstever@eecs.umich.eduexcept SystemExit, e: 772656Sstever@eecs.umich.edu print """ 782656Sstever@eecs.umich.eduFor more details, see: 792653Sstever@eecs.umich.edu http://m5sim.org/wiki/index.php/Compiling_M5 802653Sstever@eecs.umich.edu""" 812653Sstever@eecs.umich.edu raise 822653Sstever@eecs.umich.edu 832653Sstever@eecs.umich.edu# We ensure the python version early because we have stuff that 842653Sstever@eecs.umich.edu# requires python 2.4 852653Sstever@eecs.umich.edutry: 862653Sstever@eecs.umich.edu EnsurePythonVersion(2, 4) 872653Sstever@eecs.umich.eduexcept SystemExit, e: 882653Sstever@eecs.umich.edu print """ 894781Snate@binkert.orgYou can use a non-default installation of the Python interpreter by 901852SN/Aeither (1) rearranging your PATH so that scons finds the non-default 91955SN/A'python' first or (2) explicitly invoking an alternative interpreter 92955SN/Aon the scons script. 93955SN/A 943717Sstever@eecs.umich.eduFor more details, see: 953716Sstever@eecs.umich.edu http://m5sim.org/wiki/index.php/Using_a_non-default_Python_installation 96955SN/A""" 971533SN/A raise 983716Sstever@eecs.umich.edu 991533SN/Aimport os 1004678Snate@binkert.orgimport re 1014678Snate@binkert.orgimport subprocess 1024678Snate@binkert.orgimport sys 1034678Snate@binkert.org 1044678Snate@binkert.orgfrom os import mkdir, environ 1054678Snate@binkert.orgfrom os.path import abspath, basename, dirname, expanduser, normpath 1064678Snate@binkert.orgfrom os.path import exists, isdir, isfile 1074678Snate@binkert.orgfrom os.path import join as joinpath, split as splitpath 1084678Snate@binkert.org 1094678Snate@binkert.orgimport SCons 1104678Snate@binkert.orgimport SCons.Node 1114678Snate@binkert.org 1124678Snate@binkert.orgdef read_command(cmd, **kwargs): 1134678Snate@binkert.org """run the command cmd, read the results and return them 1144678Snate@binkert.org this is sorta like `cmd` in shell""" 1154678Snate@binkert.org from subprocess import Popen, PIPE, STDOUT 1164678Snate@binkert.org 1174678Snate@binkert.org if isinstance(cmd, str): 1184678Snate@binkert.org cmd = cmd.split() 1194678Snate@binkert.org 1204678Snate@binkert.org no_exception = 'exception' in kwargs 1214973Ssaidi@eecs.umich.edu exception = kwargs.pop('exception', None) 1224678Snate@binkert.org 1234678Snate@binkert.org kwargs.setdefault('shell', False) 1244678Snate@binkert.org kwargs.setdefault('stdout', PIPE) 1254678Snate@binkert.org kwargs.setdefault('stderr', STDOUT) 1264678Snate@binkert.org kwargs.setdefault('close_fds', True) 1274678Snate@binkert.org try: 128955SN/A subp = Popen(cmd, **kwargs) 129955SN/A except Exception, e: 1302632Sstever@eecs.umich.edu if no_exception: 1312632Sstever@eecs.umich.edu return exception 132955SN/A raise 133955SN/A 134955SN/A return subp.communicate()[0] 135955SN/A 1362632Sstever@eecs.umich.edu# helper function: compare arrays or strings of version numbers. 137955SN/A# E.g., compare_version((1,3,25), (1,4,1)') 1382632Sstever@eecs.umich.edu# returns -1, 0, 1 if v1 is <, ==, > v2 1392632Sstever@eecs.umich.edudef compare_versions(v1, v2): 1402632Sstever@eecs.umich.edu def make_version_list(v): 1412632Sstever@eecs.umich.edu if isinstance(v, (list,tuple)): 1422632Sstever@eecs.umich.edu return v 1432632Sstever@eecs.umich.edu elif isinstance(v, str): 1442632Sstever@eecs.umich.edu return map(lambda x: int(re.match('\d+', x).group()), v.split('.')) 1453053Sstever@eecs.umich.edu else: 1463053Sstever@eecs.umich.edu raise TypeError 1473053Sstever@eecs.umich.edu 1483053Sstever@eecs.umich.edu v1 = make_version_list(v1) 1493053Sstever@eecs.umich.edu v2 = make_version_list(v2) 1503053Sstever@eecs.umich.edu # Compare corresponding elements of lists 1513053Sstever@eecs.umich.edu for n1,n2 in zip(v1, v2): 1523053Sstever@eecs.umich.edu if n1 < n2: return -1 1533053Sstever@eecs.umich.edu if n1 > n2: return 1 1543053Sstever@eecs.umich.edu # all corresponding values are equal... see if one has extra values 1553053Sstever@eecs.umich.edu if len(v1) < len(v2): return -1 1563053Sstever@eecs.umich.edu if len(v1) > len(v2): return 1 1573053Sstever@eecs.umich.edu return 0 1583053Sstever@eecs.umich.edu 1593053Sstever@eecs.umich.edu######################################################################## 1603053Sstever@eecs.umich.edu# 1612632Sstever@eecs.umich.edu# Set up the main build environment. 1622632Sstever@eecs.umich.edu# 1632632Sstever@eecs.umich.edu######################################################################## 1642632Sstever@eecs.umich.eduuse_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 'PATH', 1652632Sstever@eecs.umich.edu 'RANLIB' ]) 1662632Sstever@eecs.umich.edu 1673718Sstever@eecs.umich.eduuse_env = {} 1683718Sstever@eecs.umich.edufor key,val in os.environ.iteritems(): 1693718Sstever@eecs.umich.edu if key in use_vars or key.startswith("M5"): 1703718Sstever@eecs.umich.edu use_env[key] = val 1713718Sstever@eecs.umich.edu 1723718Sstever@eecs.umich.edumain = Environment(ENV=use_env) 1733718Sstever@eecs.umich.edumain.root = Dir(".") # The current directory (where this file lives). 1743718Sstever@eecs.umich.edumain.srcdir = Dir("src") # The source directory 1753718Sstever@eecs.umich.edu 1763718Sstever@eecs.umich.edu######################################################################## 1773718Sstever@eecs.umich.edu# 1783718Sstever@eecs.umich.edu# Mercurial Stuff. 1793718Sstever@eecs.umich.edu# 1802634Sstever@eecs.umich.edu# If the M5 directory is a mercurial repository, we should do some 1812634Sstever@eecs.umich.edu# extra things. 1822632Sstever@eecs.umich.edu# 1832638Sstever@eecs.umich.edu######################################################################## 1842632Sstever@eecs.umich.edu 1852632Sstever@eecs.umich.eduhgdir = main.root.Dir(".hg") 1862632Sstever@eecs.umich.edu 1872632Sstever@eecs.umich.edumercurial_style_message = """ 1882632Sstever@eecs.umich.eduYou're missing the M5 style hook. 1892632Sstever@eecs.umich.eduPlease install the hook so we can ensure that all code fits a common style. 1901858SN/A 1913716Sstever@eecs.umich.eduAll you'd need to do is add the following lines to your repository .hg/hgrc 1922638Sstever@eecs.umich.eduor your personal .hgrc 1932638Sstever@eecs.umich.edu---------------- 1942638Sstever@eecs.umich.edu 1952638Sstever@eecs.umich.edu[extensions] 1962638Sstever@eecs.umich.edustyle = %s/util/style.py 1972638Sstever@eecs.umich.edu 1982638Sstever@eecs.umich.edu[hooks] 1993716Sstever@eecs.umich.edupretxncommit.style = python:style.check_whitespace 2002634Sstever@eecs.umich.edu""" % (main.root) 2012634Sstever@eecs.umich.edu 202955SN/Amercurial_bin_not_found = """ 203955SN/AMercurial binary cannot be found, unfortunately this means that we 204955SN/Acannot easily determine the version of M5 that you are running and 205955SN/Athis makes error messages more difficult to collect. Please consider 206955SN/Ainstalling mercurial if you choose to post an error message 207955SN/A""" 208955SN/A 209955SN/Amercurial_lib_not_found = """ 2101858SN/AMercurial libraries cannot be found, ignoring style hook 2111858SN/AIf you are actually a M5 developer, please fix this and 2122632Sstever@eecs.umich.edurun the style hook. It is important. 213955SN/A""" 2144781Snate@binkert.org 2153643Ssaidi@eecs.umich.eduhg_info = "Unknown" 2163643Ssaidi@eecs.umich.eduif hgdir.exists(): 2173643Ssaidi@eecs.umich.edu # 1) Grab repository revision if we know it. 2183643Ssaidi@eecs.umich.edu cmd = "hg id -n -i -t -b" 2193643Ssaidi@eecs.umich.edu try: 2203643Ssaidi@eecs.umich.edu hg_info = read_command(cmd, cwd=main.root.abspath).strip() 2213643Ssaidi@eecs.umich.edu except OSError: 2224494Ssaidi@eecs.umich.edu print mercurial_bin_not_found 2234494Ssaidi@eecs.umich.edu 2243716Sstever@eecs.umich.edu # 2) Ensure that the style hook is in place. 2251105SN/A try: 2262667Sstever@eecs.umich.edu ui = None 2272667Sstever@eecs.umich.edu if ARGUMENTS.get('IGNORE_STYLE') != 'True': 2282667Sstever@eecs.umich.edu from mercurial import ui 2292667Sstever@eecs.umich.edu ui = ui.ui() 2302667Sstever@eecs.umich.edu except ImportError: 2312667Sstever@eecs.umich.edu print mercurial_lib_not_found 2321869SN/A 2331869SN/A if ui is not None: 2341869SN/A ui.readconfig(hgdir.File('hgrc').abspath) 2351869SN/A style_hook = ui.config('hooks', 'pretxncommit.style', None) 2361869SN/A 2371065SN/A if not style_hook: 2382632Sstever@eecs.umich.edu print mercurial_style_message 2395199Sstever@gmail.com sys.exit(1) 2403918Ssaidi@eecs.umich.eduelse: 2413918Ssaidi@eecs.umich.edu print ".hg directory not found" 2423940Ssaidi@eecs.umich.edu 2434781Snate@binkert.orgmain['HG_INFO'] = hg_info 2444781Snate@binkert.org 2453918Ssaidi@eecs.umich.edu################################################### 2464781Snate@binkert.org# 2474781Snate@binkert.org# Figure out which configurations to set up based on the path(s) of 2483918Ssaidi@eecs.umich.edu# the target(s). 2494781Snate@binkert.org# 2504781Snate@binkert.org################################################### 2513940Ssaidi@eecs.umich.edu 2523942Ssaidi@eecs.umich.edu# Find default configuration & binary. 2533940Ssaidi@eecs.umich.eduDefault(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA_SE/m5.debug')) 2543918Ssaidi@eecs.umich.edu 2553918Ssaidi@eecs.umich.edu# helper function: find last occurrence of element in list 256955SN/Adef rfind(l, elt, offs = -1): 2571858SN/A for i in range(len(l)+offs, 0, -1): 2583918Ssaidi@eecs.umich.edu if l[i] == elt: 2593918Ssaidi@eecs.umich.edu return i 2603918Ssaidi@eecs.umich.edu raise ValueError, "element not found" 2613918Ssaidi@eecs.umich.edu 2623940Ssaidi@eecs.umich.edu# Each target must have 'build' in the interior of the path; the 2633940Ssaidi@eecs.umich.edu# directory below this will determine the build parameters. For 2643918Ssaidi@eecs.umich.edu# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 2653918Ssaidi@eecs.umich.edu# recognize that ALPHA_SE specifies the configuration because it 2663918Ssaidi@eecs.umich.edu# follow 'build' in the bulid path. 2673918Ssaidi@eecs.umich.edu 2683918Ssaidi@eecs.umich.edu# Generate absolute paths to targets so we can see where the build dir is 2693918Ssaidi@eecs.umich.eduif COMMAND_LINE_TARGETS: 2703918Ssaidi@eecs.umich.edu # Ask SCons which directory it was invoked from 2713918Ssaidi@eecs.umich.edu launch_dir = GetLaunchDir() 2723918Ssaidi@eecs.umich.edu # Make targets relative to invocation directory 2733940Ssaidi@eecs.umich.edu abs_targets = [ normpath(joinpath(launch_dir, str(x))) for x in \ 2743918Ssaidi@eecs.umich.edu COMMAND_LINE_TARGETS] 2753918Ssaidi@eecs.umich.eduelse: 2761851SN/A # Default targets are relative to root of tree 2771851SN/A abs_targets = [ normpath(joinpath(main.root.abspath, str(x))) for x in \ 2781858SN/A DEFAULT_TARGETS] 2795200Sstever@gmail.com 280955SN/A 2813053Sstever@eecs.umich.edu# Generate a list of the unique build roots and configs that the 2823053Sstever@eecs.umich.edu# collected targets reference. 2833053Sstever@eecs.umich.eduvariant_paths = [] 2843053Sstever@eecs.umich.edubuild_root = None 2853053Sstever@eecs.umich.edufor t in abs_targets: 2863053Sstever@eecs.umich.edu path_dirs = t.split('/') 2873053Sstever@eecs.umich.edu try: 2883053Sstever@eecs.umich.edu build_top = rfind(path_dirs, 'build', -2) 2893053Sstever@eecs.umich.edu except: 2904742Sstever@eecs.umich.edu print "Error: no non-leaf 'build' dir found on target path", t 2914742Sstever@eecs.umich.edu Exit(1) 2923053Sstever@eecs.umich.edu this_build_root = joinpath('/',*path_dirs[:build_top+1]) 2933053Sstever@eecs.umich.edu if not build_root: 2943053Sstever@eecs.umich.edu build_root = this_build_root 2953053Sstever@eecs.umich.edu else: 2963053Sstever@eecs.umich.edu if this_build_root != build_root: 2973053Sstever@eecs.umich.edu print "Error: build targets not under same build root\n"\ 2983053Sstever@eecs.umich.edu " %s\n %s" % (build_root, this_build_root) 2993053Sstever@eecs.umich.edu Exit(1) 3003053Sstever@eecs.umich.edu variant_path = joinpath('/',*path_dirs[:build_top+2]) 3012667Sstever@eecs.umich.edu if variant_path not in variant_paths: 3024554Sbinkertn@umich.edu variant_paths.append(variant_path) 3034554Sbinkertn@umich.edu 3042667Sstever@eecs.umich.edu# Make sure build_root exists (might not if this is the first build there) 3054554Sbinkertn@umich.eduif not isdir(build_root): 3064554Sbinkertn@umich.edu mkdir(build_root) 3074554Sbinkertn@umich.edu 3084554Sbinkertn@umich.eduExport('main') 3094554Sbinkertn@umich.edu 3104554Sbinkertn@umich.edumain.SConsignFile(joinpath(build_root, "sconsign")) 3114554Sbinkertn@umich.edu 3124781Snate@binkert.org# Default duplicate option is to use hard links, but this messes up 3134554Sbinkertn@umich.edu# when you use emacs to edit a file in the target dir, as emacs moves 3144554Sbinkertn@umich.edu# file to file~ then copies to file, breaking the link. Symbolic 3152667Sstever@eecs.umich.edu# (soft) links work better. 3164554Sbinkertn@umich.edumain.SetOption('duplicate', 'soft-copy') 3174554Sbinkertn@umich.edu 3184554Sbinkertn@umich.edu# 3194554Sbinkertn@umich.edu# Set up global sticky variables... these are common to an entire build 3202667Sstever@eecs.umich.edu# tree (not specific to a particular build like ALPHA_SE) 3214554Sbinkertn@umich.edu# 3222667Sstever@eecs.umich.edu 3234554Sbinkertn@umich.edu# Variable validators & converters for global sticky variables 3244554Sbinkertn@umich.edudef PathListMakeAbsolute(val): 3252667Sstever@eecs.umich.edu if not val: 3262638Sstever@eecs.umich.edu return val 3272638Sstever@eecs.umich.edu f = lambda p: abspath(expanduser(p)) 3282638Sstever@eecs.umich.edu return ':'.join(map(f, val.split(':'))) 3293716Sstever@eecs.umich.edu 3303716Sstever@eecs.umich.edudef PathListAllExist(key, val, env): 3311858SN/A if not val: 3325204Sstever@gmail.com return 3335204Sstever@gmail.com paths = val.split(':') 3345204Sstever@gmail.com for path in paths: 3355204Sstever@gmail.com if not isdir(path): 3365204Sstever@gmail.com raise SCons.Errors.UserError("Path does not exist: '%s'" % path) 3375204Sstever@gmail.com 3385204Sstever@gmail.comglobal_sticky_vars_file = joinpath(build_root, 'variables.global') 3395204Sstever@gmail.com 3405204Sstever@gmail.comglobal_sticky_vars = Variables(global_sticky_vars_file, args=ARGUMENTS) 3415204Sstever@gmail.com 3425204Sstever@gmail.comglobal_sticky_vars.AddVariables( 3435204Sstever@gmail.com ('CC', 'C compiler', environ.get('CC', main['CC'])), 3445204Sstever@gmail.com ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 3455204Sstever@gmail.com ('BATCH', 'Use batch pool for build and tests', False), 3465204Sstever@gmail.com ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 3475204Sstever@gmail.com ('EXTRAS', 'Add Extra directories to the compilation', '', 3485204Sstever@gmail.com PathListAllExist, PathListMakeAbsolute), 3495204Sstever@gmail.com BoolVariable('RUBY', 'Build with Ruby', False), 3505204Sstever@gmail.com ) 3513118Sstever@eecs.umich.edu 3523118Sstever@eecs.umich.edu# base help text 3533118Sstever@eecs.umich.eduhelp_text = ''' 3543118Sstever@eecs.umich.eduUsage: scons [scons options] [build options] [target(s)] 3553118Sstever@eecs.umich.edu 3563118Sstever@eecs.umich.eduGlobal sticky options: 3573118Sstever@eecs.umich.edu''' 3583118Sstever@eecs.umich.edu 3593118Sstever@eecs.umich.eduhelp_text += global_sticky_vars.GenerateHelpText(main) 3603118Sstever@eecs.umich.edu 3613118Sstever@eecs.umich.edu# Update main environment with values from ARGUMENTS & global_sticky_vars_file 3623716Sstever@eecs.umich.eduglobal_sticky_vars.Update(main) 3633118Sstever@eecs.umich.edu 3643118Sstever@eecs.umich.edu# Save sticky variable settings back to current variables file 3653118Sstever@eecs.umich.eduglobal_sticky_vars.Save(global_sticky_vars_file, main) 3663118Sstever@eecs.umich.edu 3673118Sstever@eecs.umich.edu# Parse EXTRAS variable to build list of all directories where we're 3683118Sstever@eecs.umich.edu# look for sources etc. This list is exported as base_dir_list. 3693118Sstever@eecs.umich.edubase_dir = main.srcdir.abspath 3703118Sstever@eecs.umich.eduif main['EXTRAS']: 3713118Sstever@eecs.umich.edu extras_dir_list = main['EXTRAS'].split(':') 3723716Sstever@eecs.umich.eduelse: 3733118Sstever@eecs.umich.edu extras_dir_list = [] 3743118Sstever@eecs.umich.edu 3753118Sstever@eecs.umich.eduExport('base_dir') 3763118Sstever@eecs.umich.eduExport('extras_dir_list') 3773118Sstever@eecs.umich.edu 3783118Sstever@eecs.umich.edu# the ext directory should be on the #includes path 3793118Sstever@eecs.umich.edumain.Append(CPPPATH=[Dir('ext')]) 3803118Sstever@eecs.umich.edu 3813118Sstever@eecs.umich.edu# M5_PLY is used by isa_parser.py to find the PLY package. 3823118Sstever@eecs.umich.edumain.Append(ENV = { 'M5_PLY' : Dir('ext/ply').abspath }) 3833483Ssaidi@eecs.umich.edu 3843494Ssaidi@eecs.umich.eduCXX_version = read_command([main['CXX'],'--version'], exception=False) 3853494Ssaidi@eecs.umich.eduCXX_V = read_command([main['CXX'],'-V'], exception=False) 3863483Ssaidi@eecs.umich.edu 3873483Ssaidi@eecs.umich.edumain['GCC'] = CXX_version and CXX_version.find('g++') >= 0 3883483Ssaidi@eecs.umich.edumain['SUNCC'] = CXX_V and CXX_V.find('Sun C++') >= 0 3893053Sstever@eecs.umich.edumain['ICC'] = CXX_V and CXX_V.find('Intel') >= 0 3903053Sstever@eecs.umich.eduif main['GCC'] + main['SUNCC'] + main['ICC'] > 1: 3913918Ssaidi@eecs.umich.edu print 'Error: How can we have two at the same time?' 3923053Sstever@eecs.umich.edu Exit(1) 3933053Sstever@eecs.umich.edu 3943053Sstever@eecs.umich.edu# Set up default C++ compiler flags 3953053Sstever@eecs.umich.eduif main['GCC']: 3963053Sstever@eecs.umich.edu main.Append(CCFLAGS='-pipe') 3971858SN/A main.Append(CCFLAGS='-fno-strict-aliasing') 3981858SN/A main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef']) 3991858SN/A main.Append(CXXFLAGS='-Wno-deprecated') 4001858SN/Aelif main['ICC']: 4011858SN/A pass #Fix me... add warning flags once we clean up icc warnings 4021858SN/Aelif main['SUNCC']: 4031859SN/A main.Append(CCFLAGS='-Qoption ccfe') 4041858SN/A main.Append(CCFLAGS='-features=gcc') 4051858SN/A main.Append(CCFLAGS='-features=extensions') 4061858SN/A main.Append(CCFLAGS='-library=stlport4') 4071859SN/A main.Append(CCFLAGS='-xar') 4081859SN/A #main.Append(CCFLAGS='-instances=semiexplicit') 4091862SN/Aelse: 4103053Sstever@eecs.umich.edu print 'Error: Don\'t know what compiler options to use for your compiler.' 4113053Sstever@eecs.umich.edu print ' Please fix SConstruct and src/SConscript and try again.' 4123053Sstever@eecs.umich.edu Exit(1) 4133053Sstever@eecs.umich.edu 4141859SN/A# Set up common yacc/bison flags (needed for Ruby) 4151859SN/Amain['YACCFLAGS'] = '-d' 4161859SN/Amain['YACCHXXFILESUFFIX'] = '.hh' 4171859SN/A 4181859SN/A# Do this after we save setting back, or else we'll tack on an 4191859SN/A# extra 'qdo' every time we run scons. 4201859SN/Aif main['BATCH']: 4211859SN/A main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 4221862SN/A main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 4231859SN/A main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 4241859SN/A main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 4251859SN/A main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 4261858SN/A 4271858SN/Aif sys.platform == 'cygwin': 4282139SN/A # cygwin has some header file issues... 4294202Sbinkertn@umich.edu main.Append(CCFLAGS=Split("-Wno-uninitialized")) 4304202Sbinkertn@umich.edu 4312139SN/A# Check for SWIG 4322155SN/Aif not main.has_key('SWIG'): 4334202Sbinkertn@umich.edu print 'Error: SWIG utility not found.' 4344202Sbinkertn@umich.edu print ' Please install (see http://www.swig.org) and retry.' 4354202Sbinkertn@umich.edu Exit(1) 4362155SN/A 4371869SN/A# Check for appropriate SWIG version 4381869SN/Aswig_version = read_command(('swig', '-version'), exception='').split() 4391869SN/A# First 3 words should be "SWIG Version x.y.z" 4401869SN/Aif len(swig_version) < 3 or \ 4414202Sbinkertn@umich.edu swig_version[0] != 'SWIG' or swig_version[1] != 'Version': 4424202Sbinkertn@umich.edu print 'Error determining SWIG version.' 4434202Sbinkertn@umich.edu Exit(1) 4444202Sbinkertn@umich.edu 4454202Sbinkertn@umich.edumin_swig_version = '1.3.28' 4464202Sbinkertn@umich.eduif compare_versions(swig_version[2], min_swig_version) < 0: 4474202Sbinkertn@umich.edu print 'Error: SWIG version', min_swig_version, 'or newer required.' 4484202Sbinkertn@umich.edu print ' Installed version:', swig_version[2] 4494202Sbinkertn@umich.edu Exit(1) 4504202Sbinkertn@umich.edu 4514202Sbinkertn@umich.edu# Set up SWIG flags & scanner 4524202Sbinkertn@umich.eduswig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS') 4534202Sbinkertn@umich.edumain.Append(SWIGFLAGS=swig_flags) 4544202Sbinkertn@umich.edu 4554202Sbinkertn@umich.edu# filter out all existing swig scanners, they mess up the dependency 4564202Sbinkertn@umich.edu# stuff for some reason 4574773Snate@binkert.orgscanners = [] 4584775Snate@binkert.orgfor scanner in main['SCANNERS']: 4594775Snate@binkert.org skeys = scanner.skeys 4604773Snate@binkert.org if skeys == '.i': 4614773Snate@binkert.org continue 4624773Snate@binkert.org 4634773Snate@binkert.org if isinstance(skeys, (list, tuple)) and '.i' in skeys: 4644773Snate@binkert.org continue 4654773Snate@binkert.org 4661869SN/A scanners.append(scanner) 4674202Sbinkertn@umich.edu 4681869SN/A# add the new swig scanner that we like better 4692508SN/Afrom SCons.Scanner import ClassicCPP as CPPScanner 4702508SN/Aswig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")' 4712508SN/Ascanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re)) 4722508SN/A 4734202Sbinkertn@umich.edu# replace the scanners list that has what we want 4741869SN/Amain['SCANNERS'] = scanners 4751869SN/A 4761869SN/A# Add a custom Check function to the Configure context so that we can 4771869SN/A# figure out if the compiler adds leading underscores to global 4781869SN/A# variables. This is needed for the autogenerated asm files that we 4791869SN/A# use for embedding the python code. 4801965SN/Adef CheckLeading(context): 4811965SN/A context.Message("Checking for leading underscore in global variables...") 4821965SN/A # 1) Define a global variable called x from asm so the C compiler 4831869SN/A # won't change the symbol at all. 4841869SN/A # 2) Declare that variable. 4852733Sktlim@umich.edu # 3) Use the variable 4861869SN/A # 4871884SN/A # If the compiler prepends an underscore, this will successfully 4881884SN/A # link because the external symbol 'x' will be called '_x' which 4893356Sbinkertn@umich.edu # was defined by the asm statement. If the compiler does not 4903356Sbinkertn@umich.edu # prepend an underscore, this will not successfully link because 4913356Sbinkertn@umich.edu # '_x' will have been defined by assembly, while the C portion of 4924773Snate@binkert.org # the code will be trying to use 'x' 4934773Snate@binkert.org ret = context.TryLink(''' 4944773Snate@binkert.org asm(".globl _x; _x: .byte 0"); 4951869SN/A extern int x; 4961858SN/A int main() { return x; } 4971869SN/A ''', extension=".c") 4981869SN/A context.env.Append(LEADING_UNDERSCORE=ret) 4991869SN/A context.Result(ret) 5001858SN/A return ret 5012761Sstever@eecs.umich.edu 5021869SN/A# Platform-specific configuration. Note again that we assume that all 5032733Sktlim@umich.edu# builds under a given build root run on the same host platform. 5043584Ssaidi@eecs.umich.educonf = Configure(main, 5051869SN/A conf_dir = joinpath(build_root, '.scons_config'), 5061869SN/A log_file = joinpath(build_root, 'scons_config.log'), 5071869SN/A custom_tests = { 'CheckLeading' : CheckLeading }) 5081869SN/A 5091869SN/A# Check for leading underscores. Don't really need to worry either 5101869SN/A# way so don't need to check the return code. 5111858SN/Aconf.CheckLeading() 512955SN/A 513955SN/A# Check if we should compile a 64 bit binary on Mac OS X/Darwin 5141869SN/Atry: 5151869SN/A import platform 5161869SN/A uname = platform.uname() 5171869SN/A if uname[0] == 'Darwin' and compare_versions(uname[2], '9.0.0') >= 0: 5181869SN/A if int(read_command('sysctl -n hw.cpu64bit_capable')[0]): 5191869SN/A main.Append(CCFLAGS='-arch x86_64') 5201869SN/A main.Append(CFLAGS='-arch x86_64') 5211869SN/A main.Append(LINKFLAGS='-arch x86_64') 5221869SN/A main.Append(ASFLAGS='-arch x86_64') 5231869SN/Aexcept: 5241869SN/A pass 5251869SN/A 5261869SN/A# Recent versions of scons substitute a "Null" object for Configure() 5271869SN/A# when configuration isn't necessary, e.g., if the "--help" option is 5281869SN/A# present. Unfortuantely this Null object always returns false, 5291869SN/A# breaking all our configuration checks. We replace it with our own 5301869SN/A# more optimistic null object that returns True instead. 5311869SN/Aif not conf: 5321869SN/A def NullCheck(*args, **kwargs): 5331869SN/A return True 5341869SN/A 5351869SN/A class NullConf: 5361869SN/A def __init__(self, env): 5371869SN/A self.env = env 5381869SN/A def Finish(self): 5391869SN/A return self.env 5401869SN/A def __getattr__(self, mname): 5411869SN/A return NullCheck 5421869SN/A 5433716Sstever@eecs.umich.edu conf = NullConf(main) 5443356Sbinkertn@umich.edu 5453356Sbinkertn@umich.edu# Find Python include and library directories for embedding the 5463356Sbinkertn@umich.edu# interpreter. For consistency, we will use the same Python 5473356Sbinkertn@umich.edu# installation used to run scons (and thus this script). If you want 5483356Sbinkertn@umich.edu# to link in an alternate version, see above for instructions on how 5493356Sbinkertn@umich.edu# to invoke scons with a different copy of the Python interpreter. 5504781Snate@binkert.orgfrom distutils import sysconfig 5511869SN/A 5521869SN/Apy_getvar = sysconfig.get_config_var 5531869SN/A 5541869SN/Apy_version = 'python' + py_getvar('VERSION') 5551869SN/A 5561869SN/Apy_general_include = sysconfig.get_python_inc() 5571869SN/Apy_platform_include = sysconfig.get_python_inc(plat_specific=True) 5582655Sstever@eecs.umich.edupy_includes = [ py_general_include ] 5592655Sstever@eecs.umich.eduif py_platform_include != py_general_include: 5602655Sstever@eecs.umich.edu py_includes.append(py_platform_include) 5612655Sstever@eecs.umich.edu 5622655Sstever@eecs.umich.edupy_lib_path = [ py_getvar('LIBDIR') ] 5632655Sstever@eecs.umich.edu# add the prefix/lib/pythonX.Y/config dir, but only if there is no 5642655Sstever@eecs.umich.edu# shared library in prefix/lib/. 5652655Sstever@eecs.umich.eduif not py_getvar('Py_ENABLE_SHARED'): 5662655Sstever@eecs.umich.edu py_lib_path.append(py_getvar('LIBPL')) 5672655Sstever@eecs.umich.edu 5682655Sstever@eecs.umich.edupy_libs = [] 5692655Sstever@eecs.umich.edufor lib in py_getvar('LIBS').split() + py_getvar('SYSLIBS').split(): 5702655Sstever@eecs.umich.edu assert lib.startswith('-l') 5712655Sstever@eecs.umich.edu lib = lib[2:] 5722655Sstever@eecs.umich.edu if lib not in py_libs: 5732655Sstever@eecs.umich.edu py_libs.append(lib) 5742655Sstever@eecs.umich.edupy_libs.append(py_version) 5752655Sstever@eecs.umich.edu 5762655Sstever@eecs.umich.edumain.Append(CPPPATH=py_includes) 5772655Sstever@eecs.umich.edumain.Append(LIBPATH=py_lib_path) 5782655Sstever@eecs.umich.edu 5792655Sstever@eecs.umich.edu# verify that this stuff works 5802655Sstever@eecs.umich.eduif not conf.CheckHeader('Python.h', '<>'): 5812655Sstever@eecs.umich.edu print "Error: can't find Python.h header in", py_includes 5822655Sstever@eecs.umich.edu Exit(1) 5832655Sstever@eecs.umich.edu 5842634Sstever@eecs.umich.edufor lib in py_libs: 5852634Sstever@eecs.umich.edu if not conf.CheckLib(lib): 5862634Sstever@eecs.umich.edu print "Error: can't find library %s required by python" % lib 5872634Sstever@eecs.umich.edu Exit(1) 5882634Sstever@eecs.umich.edu 5892634Sstever@eecs.umich.edu# On Solaris you need to use libsocket for socket ops 5902638Sstever@eecs.umich.eduif not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 5912638Sstever@eecs.umich.edu if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 5923716Sstever@eecs.umich.edu print "Can't find library with socket calls (e.g. accept())" 5932638Sstever@eecs.umich.edu Exit(1) 5942638Sstever@eecs.umich.edu 5951869SN/A# Check for zlib. If the check passes, libz will be automatically 5961869SN/A# added to the LIBS environment variable. 5973546Sgblack@eecs.umich.eduif not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 5983546Sgblack@eecs.umich.edu print 'Error: did not find needed zlib compression library '\ 5993546Sgblack@eecs.umich.edu 'and/or zlib.h header file.' 6003546Sgblack@eecs.umich.edu print ' Please install zlib and try again.' 6014202Sbinkertn@umich.edu Exit(1) 6023546Sgblack@eecs.umich.edu 6033546Sgblack@eecs.umich.edu# Check for <fenv.h> (C99 FP environment control) 6043546Sgblack@eecs.umich.eduhave_fenv = conf.CheckHeader('fenv.h', '<>') 6053546Sgblack@eecs.umich.eduif not have_fenv: 6063546Sgblack@eecs.umich.edu print "Warning: Header file <fenv.h> not found." 6074781Snate@binkert.org print " This host has no IEEE FP rounding mode control." 6084781Snate@binkert.org 6094781Snate@binkert.org###################################################################### 6104781Snate@binkert.org# 6114781Snate@binkert.org# Check for mysql. 6124781Snate@binkert.org# 6134781Snate@binkert.orgmysql_config = WhereIs('mysql_config') 6144781Snate@binkert.orghave_mysql = bool(mysql_config) 6154781Snate@binkert.org 6164781Snate@binkert.org# Check MySQL version. 6174781Snate@binkert.orgif have_mysql: 6184781Snate@binkert.org mysql_version = read_command(mysql_config + ' --version') 6193546Sgblack@eecs.umich.edu min_mysql_version = '4.1' 6203546Sgblack@eecs.umich.edu if compare_versions(mysql_version, min_mysql_version) < 0: 6213546Sgblack@eecs.umich.edu print 'Warning: MySQL', min_mysql_version, 'or newer required.' 6224781Snate@binkert.org print ' Version', mysql_version, 'detected.' 6233546Sgblack@eecs.umich.edu have_mysql = False 6243546Sgblack@eecs.umich.edu 6253546Sgblack@eecs.umich.edu# Set up mysql_config commands. 6263546Sgblack@eecs.umich.eduif have_mysql: 6273546Sgblack@eecs.umich.edu mysql_config_include = mysql_config + ' --include' 6283546Sgblack@eecs.umich.edu if os.system(mysql_config_include + ' > /dev/null') != 0: 6293546Sgblack@eecs.umich.edu # older mysql_config versions don't support --include, use 6303546Sgblack@eecs.umich.edu # --cflags instead 6313546Sgblack@eecs.umich.edu mysql_config_include = mysql_config + ' --cflags | sed s/\\\'//g' 6323546Sgblack@eecs.umich.edu # This seems to work in all versions 6334202Sbinkertn@umich.edu mysql_config_libs = mysql_config + ' --libs' 6343546Sgblack@eecs.umich.edu 6353546Sgblack@eecs.umich.edu###################################################################### 6363546Sgblack@eecs.umich.edu# 637955SN/A# Finish the configuration 638955SN/A# 639955SN/Amain = conf.Finish() 640955SN/A 6411858SN/A###################################################################### 6421858SN/A# 6431858SN/A# Collect all non-global variables 6442632Sstever@eecs.umich.edu# 6452632Sstever@eecs.umich.edu 6464773Snate@binkert.org# Define the universe of supported ISAs 6474773Snate@binkert.orgall_isa_list = [ ] 6482632Sstever@eecs.umich.eduExport('all_isa_list') 6492632Sstever@eecs.umich.edu 6502632Sstever@eecs.umich.edu# Define the universe of supported CPU models 6512634Sstever@eecs.umich.eduall_cpu_list = [ ] 6522638Sstever@eecs.umich.edudefault_cpus = [ ] 6532023SN/AExport('all_cpu_list', 'default_cpus') 6542632Sstever@eecs.umich.edu 6552632Sstever@eecs.umich.edu# Sticky variables get saved in the variables file so they persist from 6562632Sstever@eecs.umich.edu# one invocation to the next (unless overridden, in which case the new 6572632Sstever@eecs.umich.edu# value becomes sticky). 6582632Sstever@eecs.umich.edusticky_vars = Variables(args=ARGUMENTS) 6593716Sstever@eecs.umich.eduExport('sticky_vars') 6602632Sstever@eecs.umich.edu 6612632Sstever@eecs.umich.edu# Sticky variables that should be exported 6622632Sstever@eecs.umich.eduexport_vars = [] 6632632Sstever@eecs.umich.eduExport('export_vars') 6642632Sstever@eecs.umich.edu 6652023SN/A# Non-sticky variables only apply to the current build. 6662632Sstever@eecs.umich.edunonsticky_vars = Variables(args=ARGUMENTS) 6672632Sstever@eecs.umich.eduExport('nonsticky_vars') 6681889SN/A 6691889SN/A# Walk the tree and execute all SConsopts scripts that wil add to the 6702632Sstever@eecs.umich.edu# above variables 6712632Sstever@eecs.umich.edufor bdir in [ base_dir ] + extras_dir_list: 6722632Sstever@eecs.umich.edu for root, dirs, files in os.walk(bdir): 6732632Sstever@eecs.umich.edu if 'SConsopts' in files: 6743716Sstever@eecs.umich.edu print "Reading", joinpath(root, 'SConsopts') 6753716Sstever@eecs.umich.edu SConscript(joinpath(root, 'SConsopts')) 6762632Sstever@eecs.umich.edu 6772632Sstever@eecs.umich.eduall_isa_list.sort() 6782632Sstever@eecs.umich.eduall_cpu_list.sort() 6792632Sstever@eecs.umich.edudefault_cpus.sort() 6802632Sstever@eecs.umich.edu 6812632Sstever@eecs.umich.edusticky_vars.AddVariables( 6822632Sstever@eecs.umich.edu EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 6832632Sstever@eecs.umich.edu BoolVariable('FULL_SYSTEM', 'Full-system support', False), 6841888SN/A ListVariable('CPU_MODELS', 'CPU models', default_cpus, all_cpu_list), 6851888SN/A BoolVariable('NO_FAST_ALLOC', 'Disable fast object allocator', False), 6861869SN/A BoolVariable('FAST_ALLOC_DEBUG', 'Enable fast object allocator debugging', 6871869SN/A False), 6881858SN/A BoolVariable('FAST_ALLOC_STATS', 'Enable fast object allocator statistics', 6892598SN/A False), 6902598SN/A BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 6912598SN/A False), 6922598SN/A BoolVariable('SS_COMPATIBLE_FP', 6932598SN/A 'Make floating-point results compatible with SimpleScalar', 6941858SN/A False), 6951858SN/A BoolVariable('USE_SSE2', 6961858SN/A 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 6971858SN/A False), 6981858SN/A BoolVariable('USE_MYSQL', 'Use MySQL for stats output', have_mysql), 6991858SN/A BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 7001858SN/A BoolVariable('USE_CHECKER', 'Use checker for detailed CPU models', False), 7011858SN/A BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False), 7021858SN/A ) 7031871SN/A 7041858SN/Anonsticky_vars.AddVariables( 7051858SN/A BoolVariable('update_ref', 'Update test reference outputs', False) 7061858SN/A ) 7071858SN/A 7081858SN/A# These variables get exported to #defines in config/*.hh (see src/SConscript). 7091858SN/Aexport_vars += ['FULL_SYSTEM', 'USE_FENV', 'USE_MYSQL', 7101858SN/A 'NO_FAST_ALLOC', 'FAST_ALLOC_DEBUG', 'FAST_ALLOC_STATS', 7111858SN/A 'SS_COMPATIBLE_FP', 'USE_CHECKER', 'TARGET_ISA', 'CP_ANNOTATE'] 7121858SN/A 7131858SN/A################################################### 7141858SN/A# 7151859SN/A# Define a SCons builder for configuration flag headers. 7161859SN/A# 7171869SN/A################################################### 7181888SN/A 7192632Sstever@eecs.umich.edu# This function generates a config header file that #defines the 7201869SN/A# variable symbol to the current variable setting (0 or 1). The source 7211884SN/A# operands are the name of the variable and a Value node containing the 7221884SN/A# value of the variable. 7231884SN/Adef build_config_file(target, source, env): 7241884SN/A (variable, value) = [s.get_contents() for s in source] 7251884SN/A f = file(str(target[0]), 'w') 7261884SN/A print >> f, '#define', variable, value 7271965SN/A f.close() 7281965SN/A return None 7291965SN/A 7302761Sstever@eecs.umich.edu# Generate the message to be printed when building the config file. 7311869SN/Adef build_config_file_string(target, source, env): 7321869SN/A (variable, value) = [s.get_contents() for s in source] 7332632Sstever@eecs.umich.edu return "Defining %s as %s in %s." % (variable, value, target[0]) 7342667Sstever@eecs.umich.edu 7351869SN/A# Combine the two functions into a scons Action object. 7361869SN/Aconfig_action = Action(build_config_file, build_config_file_string) 7372929Sktlim@umich.edu 7382929Sktlim@umich.edu# The emitter munges the source & target node lists to reflect what 7393716Sstever@eecs.umich.edu# we're really doing. 7402929Sktlim@umich.edudef config_emitter(target, source, env): 741955SN/A # extract variable name from Builder arg 7422598SN/A variable = str(target[0]) 7432598SN/A # True target is config header file 7443546Sgblack@eecs.umich.edu target = joinpath('config', variable.lower() + '.hh') 745955SN/A val = env[variable] 746955SN/A if isinstance(val, bool): 747955SN/A # Force value to 0/1 7481530SN/A val = int(val) 749955SN/A elif isinstance(val, str): 750955SN/A val = '"' + val + '"' 751955SN/A 752 # Sources are variable name & value (packaged in SCons Value nodes) 753 return ([target], [Value(variable), Value(val)]) 754 755config_builder = Builder(emitter = config_emitter, action = config_action) 756 757main.Append(BUILDERS = { 'ConfigFile' : config_builder }) 758 759# libelf build is shared across all configs in the build root. 760main.SConscript('ext/libelf/SConscript', 761 variant_dir = joinpath(build_root, 'libelf')) 762 763# gzstream build is shared across all configs in the build root. 764main.SConscript('ext/gzstream/SConscript', 765 variant_dir = joinpath(build_root, 'gzstream')) 766 767################################################### 768# 769# This function is used to set up a directory with switching headers 770# 771################################################### 772 773main['ALL_ISA_LIST'] = all_isa_list 774def make_switching_dir(dname, switch_headers, env): 775 # Generate the header. target[0] is the full path of the output 776 # header to generate. 'source' is a dummy variable, since we get the 777 # list of ISAs from env['ALL_ISA_LIST']. 778 def gen_switch_hdr(target, source, env): 779 fname = str(target[0]) 780 bname = basename(fname) 781 f = open(fname, 'w') 782 f.write('#include "arch/isa_specific.hh"\n') 783 cond = '#if' 784 for isa in all_isa_list: 785 f.write('%s THE_ISA == %s_ISA\n#include "%s/%s/%s"\n' 786 % (cond, isa.upper(), dname, isa, bname)) 787 cond = '#elif' 788 f.write('#else\n#error "THE_ISA not set"\n#endif\n') 789 f.close() 790 return 0 791 792 # String to print when generating header 793 def gen_switch_hdr_string(target, source, env): 794 return "Generating switch header " + str(target[0]) 795 796 # Build SCons Action object. 'varlist' specifies env vars that this 797 # action depends on; when env['ALL_ISA_LIST'] changes these actions 798 # should get re-executed. 799 switch_hdr_action = Action(gen_switch_hdr, gen_switch_hdr_string, 800 varlist=['ALL_ISA_LIST']) 801 802 # Instantiate actions for each header 803 for hdr in switch_headers: 804 env.Command(hdr, [], switch_hdr_action) 805Export('make_switching_dir') 806 807################################################### 808# 809# Define build environments for selected configurations. 810# 811################################################### 812 813for variant_path in variant_paths: 814 print "Building in", variant_path 815 816 # Make a copy of the build-root environment to use for this config. 817 env = main.Clone() 818 env['BUILDDIR'] = variant_path 819 820 # variant_dir is the tail component of build path, and is used to 821 # determine the build parameters (e.g., 'ALPHA_SE') 822 (build_root, variant_dir) = splitpath(variant_path) 823 824 # Set env variables according to the build directory config. 825 sticky_vars.files = [] 826 # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 827 # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 828 # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 829 current_vars_file = joinpath(build_root, 'variables', variant_dir) 830 if isfile(current_vars_file): 831 sticky_vars.files.append(current_vars_file) 832 print "Using saved variables file %s" % current_vars_file 833 else: 834 # Build dir-specific variables file doesn't exist. 835 836 # Make sure the directory is there so we can create it later 837 opt_dir = dirname(current_vars_file) 838 if not isdir(opt_dir): 839 mkdir(opt_dir) 840 841 # Get default build variables from source tree. Variables are 842 # normally determined by name of $VARIANT_DIR, but can be 843 # overriden by 'default=' arg on command line. 844 default_vars_file = joinpath('build_opts', 845 ARGUMENTS.get('default', variant_dir)) 846 if isfile(default_vars_file): 847 sticky_vars.files.append(default_vars_file) 848 print "Variables file %s not found,\n using defaults in %s" \ 849 % (current_vars_file, default_vars_file) 850 else: 851 print "Error: cannot find variables file %s or %s" \ 852 % (current_vars_file, default_vars_file) 853 Exit(1) 854 855 # Apply current variable settings to env 856 sticky_vars.Update(env) 857 nonsticky_vars.Update(env) 858 859 help_text += "\nSticky variables for %s:\n" % variant_dir \ 860 + sticky_vars.GenerateHelpText(env) \ 861 + "\nNon-sticky variables for %s:\n" % variant_dir \ 862 + nonsticky_vars.GenerateHelpText(env) 863 864 # Process variable settings. 865 866 if not have_fenv and env['USE_FENV']: 867 print "Warning: <fenv.h> not available; " \ 868 "forcing USE_FENV to False in", variant_dir + "." 869 env['USE_FENV'] = False 870 871 if not env['USE_FENV']: 872 print "Warning: No IEEE FP rounding mode control in", variant_dir + "." 873 print " FP results may deviate slightly from other platforms." 874 875 if env['EFENCE']: 876 env.Append(LIBS=['efence']) 877 878 if env['USE_MYSQL']: 879 if not have_mysql: 880 print "Warning: MySQL not available; " \ 881 "forcing USE_MYSQL to False in", variant_dir + "." 882 env['USE_MYSQL'] = False 883 else: 884 print "Compiling in", variant_dir, "with MySQL support." 885 env.ParseConfig(mysql_config_libs) 886 env.ParseConfig(mysql_config_include) 887 888 # Save sticky variable settings back to current variables file 889 sticky_vars.Save(current_vars_file, env) 890 891 if env['USE_SSE2']: 892 env.Append(CCFLAGS='-msse2') 893 894 # The src/SConscript file sets up the build rules in 'env' according 895 # to the configured variables. It returns a list of environments, 896 # one for each variant build (debug, opt, etc.) 897 envList = SConscript('src/SConscript', variant_dir = variant_path, 898 exports = 'env') 899 900 # Set up the regression tests for each build. 901 for e in envList: 902 SConscript('tests/SConscript', 903 variant_dir = joinpath(variant_path, 'tests', e.Label), 904 exports = { 'env' : e }, duplicate = False) 905 906Help(help_text) 907