1# -*- mode:python -*-
2
3# Copyright (c) 2004-2005 The Regents of The University of Michigan
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions are
8# met: redistributions of source code must retain the above copyright
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22# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28#
29# Authors: Steve Reinhardt
30
31###################################################
32#
33# SCons top-level build description (SConstruct) file.
34#
35# While in this directory ('m5'), just type 'scons' to build the default
36# configuration (see below), or type 'scons build/<CONFIG>/<binary>'
37# to build some other configuration (e.g., 'build/ALPHA_FS/m5.opt' for
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58#
59# You can use 'scons -H' to print scons options. If you're in this
60# 'm5' directory (or use -u or -C to tell scons where to find this
61# file), you can use 'scons -h' to print all the M5-specific build
62# options as well.
63#
64###################################################
65
66import sys
67import os
68import re
69
70from os.path import isdir, isfile, join as joinpath
71
72import SCons
73
74# Check for recent-enough Python and SCons versions. If your system's
75# default installation of Python is not recent enough, you can use a
76# non-default installation of the Python interpreter by either (1)
77# rearranging your PATH so that scons finds the non-default 'python'
78# first or (2) explicitly invoking an alternative interpreter on the
79# scons script, e.g., "/usr/local/bin/python2.4 `which scons` [args]".
80EnsurePythonVersion(2,4)
81
82# Import subprocess after we check the version since it doesn't exist in
83# Python < 2.4.
84import subprocess
85
86# helper function: compare arrays or strings of version numbers.
87# E.g., compare_version((1,3,25), (1,4,1)')
88# returns -1, 0, 1 if v1 is <, ==, > v2
89def compare_versions(v1, v2):
90 def make_version_list(v):
91 if isinstance(v, (list,tuple)):
92 return v
93 elif isinstance(v, str):
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101 for n1,n2 in zip(v1, v2):
102 if n1 < n2: return -1
103 if n1 > n2: return 1
104 # all corresponding values are equal... see if one has extra values
105 if len(v1) < len(v2): return -1
106 if len(v1) > len(v2): return 1
107 return 0
108
109# SCons version numbers need special processing because they can have
110# charecters and an release date embedded in them. This function does
111# the magic to extract them in a similar way to the SCons internal function
112# function does and then checks that the current version is not contained in
113# a list of version tuples (bad_ver_strs)
114def CheckSCons(bad_ver_strs):
115 def scons_ver(v):
116 num_parts = v.split(' ')[0].split('.')
117 major = int(num_parts[0])
118 minor = int(re.match('\d+', num_parts[1]).group())
119 rev = 0
120 rdate = 0
121 if len(num_parts) > 2:
122 try: rev = int(re.match('\d+', num_parts[2]).group())
123 except: pass
124 rev_parts = num_parts[2].split('d')
125 if len(rev_parts) > 1:
126 rdate = int(re.match('\d+', rev_parts[1]).group())
127
128 return (major, minor, rev, rdate)
129
130 sc_ver = scons_ver(SCons.__version__)
131 for bad_ver in bad_ver_strs:
132 bv = (scons_ver(bad_ver[0]), scons_ver(bad_ver[1]))
133 if compare_versions(sc_ver, bv[0]) != -1 and\
134 compare_versions(sc_ver, bv[1]) != 1:
135 print "The version of SCons that you have installed: ", SCons.__version__
136 print "has a bug that prevents it from working correctly with M5."
137 print "Please install a version NOT contained within the following",
138 print "ranges (inclusive):"
139 for bad_ver in bad_ver_strs:
140 print " %s - %s" % bad_ver
141 Exit(2)
142
143CheckSCons((
144 # We need a version that is 0.96.91 or newer
145 ('0.0.0', '0.96.90'),
146 ))
147
148
149# The absolute path to the current directory (where this file lives).
150ROOT = Dir('.').abspath
151
152# Path to the M5 source tree.
153SRCDIR = joinpath(ROOT, 'src')
154
155# tell python where to find m5 python code
156sys.path.append(joinpath(ROOT, 'src/python'))
157
158def check_style_hook(ui):
159 ui.readconfig(joinpath(ROOT, '.hg', 'hgrc'))
160 style_hook = ui.config('hooks', 'pretxncommit.style', None)
161
162 if not style_hook:
163 print """\
164You're missing the M5 style hook.
165Please install the hook so we can ensure that all code fits a common style.
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178
179if ARGUMENTS.get('IGNORE_STYLE') != 'True' and isdir(joinpath(ROOT, '.hg')):
180 try:
181 from mercurial import ui
182 check_style_hook(ui.ui())
183 except ImportError:
184 pass
185
186###################################################
187#
188# Figure out which configurations to set up based on the path(s) of
189# the target(s).
190#
191###################################################
192
193# Find default configuration & binary.
194Default(os.environ.get('M5_DEFAULT_BINARY', 'build/ALPHA_SE/m5.debug'))
195
196# helper function: find last occurrence of element in list
197def rfind(l, elt, offs = -1):
198 for i in range(len(l)+offs, 0, -1):
199 if l[i] == elt:
200 return i
201 raise ValueError, "element not found"
202
203# Each target must have 'build' in the interior of the path; the
204# directory below this will determine the build parameters. For
205# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we
206# recognize that ALPHA_SE specifies the configuration because it
207# follow 'build' in the bulid path.
208
209# Generate absolute paths to targets so we can see where the build dir is
210if COMMAND_LINE_TARGETS:
211 # Ask SCons which directory it was invoked from
212 launch_dir = GetLaunchDir()
213 # Make targets relative to invocation directory
214 abs_targets = map(lambda x: os.path.normpath(joinpath(launch_dir, str(x))),
215 COMMAND_LINE_TARGETS)
216else:
217 # Default targets are relative to root of tree
218 abs_targets = map(lambda x: os.path.normpath(joinpath(ROOT, str(x))),
219 DEFAULT_TARGETS)
220
221
222# Generate a list of the unique build roots and configs that the
223# collected targets reference.
224build_paths = []
225build_root = None
226for t in abs_targets:
227 path_dirs = t.split('/')
228 try:
229 build_top = rfind(path_dirs, 'build', -2)
230 except:
231 print "Error: no non-leaf 'build' dir found on target path", t
232 Exit(1)
233 this_build_root = joinpath('/',*path_dirs[:build_top+1])
234 if not build_root:
235 build_root = this_build_root
236 else:
237 if this_build_root != build_root:
238 print "Error: build targets not under same build root\n"\
239 " %s\n %s" % (build_root, this_build_root)
240 Exit(1)
241 build_path = joinpath('/',*path_dirs[:build_top+2])
242 if build_path not in build_paths:
243 build_paths.append(build_path)
244
245# Make sure build_root exists (might not if this is the first build there)
246if not isdir(build_root):
247 os.mkdir(build_root)
248
249###################################################
250#
251# Set up the default build environment. This environment is copied
252# and modified according to each selected configuration.
253#
254###################################################
255
256env = Environment(ENV = os.environ, # inherit user's environment vars
257 ROOT = ROOT,
258 SRCDIR = SRCDIR)
259
260Export('env')
261
262env.SConsignFile(joinpath(build_root,"sconsign"))
263
264# Default duplicate option is to use hard links, but this messes up
265# when you use emacs to edit a file in the target dir, as emacs moves
266# file to file~ then copies to file, breaking the link. Symbolic
267# (soft) links work better.
268env.SetOption('duplicate', 'soft-copy')
269
270# I waffle on this setting... it does avoid a few painful but
271# unnecessary builds, but it also seems to make trivial builds take
272# noticeably longer.
273if False:
274 env.TargetSignatures('content')
275
276#
277# Set up global sticky options... these are common to an entire build
278# tree (not specific to a particular build like ALPHA_SE)
279#
280
281# Option validators & converters for global sticky options
282def PathListMakeAbsolute(val):
283 if not val:
284 return val
285 f = lambda p: os.path.abspath(os.path.expanduser(p))
286 return ':'.join(map(f, val.split(':')))
287
288def PathListAllExist(key, val, env):
289 if not val:
290 return
291 paths = val.split(':')
292 for path in paths:
293 if not isdir(path):
294 raise SCons.Errors.UserError("Path does not exist: '%s'" % path)
295
296global_sticky_opts_file = joinpath(build_root, 'options.global')
297
298global_sticky_opts = Options(global_sticky_opts_file, args=ARGUMENTS)
299
300global_sticky_opts.AddOptions(
301 ('CC', 'C compiler', os.environ.get('CC', env['CC'])),
302 ('CXX', 'C++ compiler', os.environ.get('CXX', env['CXX'])),
303 ('BATCH', 'Use batch pool for build and tests', False),
304 ('BATCH_CMD', 'Batch pool submission command name', 'qdo'),
305 ('EXTRAS', 'Add Extra directories to the compilation', '',
306 PathListAllExist, PathListMakeAbsolute)
307 )
308
309
310# base help text
311help_text = '''
312Usage: scons [scons options] [build options] [target(s)]
313
314'''
315
316help_text += "Global sticky options:\n" \
317 + global_sticky_opts.GenerateHelpText(env)
318
319# Update env with values from ARGUMENTS & file global_sticky_opts_file
320global_sticky_opts.Update(env)
321
322# Save sticky option settings back to current options file
323global_sticky_opts.Save(global_sticky_opts_file, env)
324
325# Parse EXTRAS option to build list of all directories where we're
326# look for sources etc. This list is exported as base_dir_list.
327base_dir = joinpath(ROOT, 'src')
328if env['EXTRAS']:
329 extras_dir_list = env['EXTRAS'].split(':')
330else:
331 extras_dir_list = []
332
333Export('base_dir')
334Export('extras_dir_list')
335
336# M5_PLY is used by isa_parser.py to find the PLY package.
337env.Append(ENV = { 'M5_PLY' : str(Dir('ext/ply')) })
338env['GCC'] = subprocess.Popen(env['CXX'] + ' --version', shell=True,
339 stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
340 close_fds=True).communicate()[0].find('g++') >= 0
341env['SUNCC'] = subprocess.Popen(env['CXX'] + ' -V', shell=True,
342 stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
343 close_fds=True).communicate()[0].find('Sun C++') >= 0
344env['ICC'] = subprocess.Popen(env['CXX'] + ' -V', shell=True,
345 stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
346 close_fds=True).communicate()[0].find('Intel') >= 0
347if env['GCC'] + env['SUNCC'] + env['ICC'] > 1:
348 print 'Error: How can we have two at the same time?'
349 Exit(1)
350
351
352# Set up default C++ compiler flags
353if env['GCC']:
354 env.Append(CCFLAGS='-pipe')
355 env.Append(CCFLAGS='-fno-strict-aliasing')
356 env.Append(CCFLAGS=Split('-Wall -Wno-sign-compare -Werror -Wundef'))
357 env.Append(CXXFLAGS='-Wno-deprecated')
358elif env['ICC']:
359 pass #Fix me... add warning flags once we clean up icc warnings
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385
386# Check for SWIG
387if not env.has_key('SWIG'):
388 print 'Error: SWIG utility not found.'
389 print ' Please install (see http://www.swig.org) and retry.'
390 Exit(1)
391
392# Check for appropriate SWIG version
393swig_version = os.popen('swig -version').read().split()
394# First 3 words should be "SWIG Version x.y.z"
395if len(swig_version) < 3 or \
396 swig_version[0] != 'SWIG' or swig_version[1] != 'Version':
397 print 'Error determining SWIG version.'
398 Exit(1)
399
400min_swig_version = '1.3.28'
401if compare_versions(swig_version[2], min_swig_version) < 0:
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465# way so don't need to check the return code.
466conf.CheckLeading()
467
468# Check if we should compile a 64 bit binary on Mac OS X/Darwin
469try:
470 import platform
471 uname = platform.uname()
472 if uname[0] == 'Darwin' and compare_versions(uname[2], '9.0.0') >= 0:
473 if int(subprocess.Popen('sysctl -n hw.cpu64bit_capable', shell=True,
474 stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
475 close_fds=True).communicate()[0][0]):
476 env.Append(CCFLAGS='-arch x86_64')
477 env.Append(CFLAGS='-arch x86_64')
478 env.Append(LINKFLAGS='-arch x86_64')
479 env.Append(ASFLAGS='-arch x86_64')
480except:
481 pass
482
483# Recent versions of scons substitute a "Null" object for Configure()
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499
500 conf = NullConf(env)
501
502# Find Python include and library directories for embedding the
503# interpreter. For consistency, we will use the same Python
504# installation used to run scons (and thus this script). If you want
505# to link in an alternate version, see above for instructions on how
506# to invoke scons with a different copy of the Python interpreter.
507
508# Get brief Python version name (e.g., "python2.4") for locating
509# include & library files
510py_version_name = 'python' + sys.version[:3]
511
512# include path, e.g. /usr/local/include/python2.4
513py_header_path = joinpath(sys.exec_prefix, 'include', py_version_name)
514env.Append(CPPPATH = py_header_path)
515# verify that it works
516if not conf.CheckHeader('Python.h', '<>'):
517 print "Error: can't find Python.h header in", py_header_path
518 Exit(1)
519
520# add library path too if it's not in the default place
521py_lib_path = None
522if sys.exec_prefix != '/usr':
523 py_lib_path = joinpath(sys.exec_prefix, 'lib')
524elif sys.platform == 'cygwin':
525 # cygwin puts the .dll in /bin for some reason
526 py_lib_path = '/bin'
527if py_lib_path:
528 env.Append(LIBPATH = py_lib_path)
529 print 'Adding', py_lib_path, 'to LIBPATH for', py_version_name
530if not conf.CheckLib(py_version_name):
531 print "Error: can't find Python library", py_version_name
532 Exit(1)
533
534# On Solaris you need to use libsocket for socket ops
535if not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'):
536 if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'):
537 print "Can't find library with socket calls (e.g. accept())"
538 Exit(1)
539
540# Check for zlib. If the check passes, libz will be automatically
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546 Exit(1)
547
548# Check for <fenv.h> (C99 FP environment control)
549have_fenv = conf.CheckHeader('fenv.h', '<>')
550if not have_fenv:
551 print "Warning: Header file <fenv.h> not found."
552 print " This host has no IEEE FP rounding mode control."
553
554# Check for mysql.
555mysql_config = WhereIs('mysql_config')
556have_mysql = mysql_config != None
557
558# Check MySQL version.
559if have_mysql:
560 mysql_version = os.popen(mysql_config + ' --version').read()
561 min_mysql_version = '4.1'
562 if compare_versions(mysql_version, min_mysql_version) < 0:
563 print 'Warning: MySQL', min_mysql_version, 'or newer required.'
564 print ' Version', mysql_version, 'detected.'
565 have_mysql = False
566
567# Set up mysql_config commands.
568if have_mysql:
569 mysql_config_include = mysql_config + ' --include'
570 if os.system(mysql_config_include + ' > /dev/null') != 0:
571 # older mysql_config versions don't support --include, use
572 # --cflags instead
573 mysql_config_include = mysql_config + ' --cflags | sed s/\\\'//g'
574 # This seems to work in all versions
575 mysql_config_libs = mysql_config + ' --libs'
576
577env = conf.Finish()
578
579# Define the universe of supported ISAs
580all_isa_list = [ ]
581Export('all_isa_list')
582
583# Define the universe of supported CPU models
584all_cpu_list = [ ]
585default_cpus = [ ]
586Export('all_cpu_list', 'default_cpus')
587
588# Sticky options get saved in the options file so they persist from
589# one invocation to the next (unless overridden, in which case the new
590# value becomes sticky).
591sticky_opts = Options(args=ARGUMENTS)
592Export('sticky_opts')
593
594# Non-sticky options only apply to the current build.
595nonsticky_opts = Options(args=ARGUMENTS)
596Export('nonsticky_opts')
597
598# Walk the tree and execute all SConsopts scripts that wil add to the
599# above options
600for bdir in [ base_dir ] + extras_dir_list:
601 for root, dirs, files in os.walk(bdir):
602 if 'SConsopts' in files:
603 print "Reading", joinpath(root, 'SConsopts')
604 SConscript(joinpath(root, 'SConsopts'))
605
606all_isa_list.sort()
607all_cpu_list.sort()
608default_cpus.sort()
609
610sticky_opts.AddOptions(
611 EnumOption('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list),
612 BoolOption('FULL_SYSTEM', 'Full-system support', False),
613 # There's a bug in scons 0.96.1 that causes ListOptions with list
614 # values (more than one value) not to be able to be restored from
615 # a saved option file. If this causes trouble then upgrade to
616 # scons 0.96.90 or later.
617 ListOption('CPU_MODELS', 'CPU models', default_cpus, all_cpu_list),
618 BoolOption('NO_FAST_ALLOC', 'Disable fast object allocator', False),
619 BoolOption('FAST_ALLOC_DEBUG', 'Enable fast object allocator debugging',
620 False),
621 BoolOption('FAST_ALLOC_STATS', 'Enable fast object allocator statistics',
622 False),
623 BoolOption('EFENCE', 'Link with Electric Fence malloc debugger',
624 False),
625 BoolOption('SS_COMPATIBLE_FP',
626 'Make floating-point results compatible with SimpleScalar',
627 False),
628 BoolOption('USE_SSE2',
629 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts',
630 False),
631 BoolOption('USE_MYSQL', 'Use MySQL for stats output', have_mysql),
632 BoolOption('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv),
633 BoolOption('USE_CHECKER', 'Use checker for detailed CPU models', False),
634 )
635
636nonsticky_opts.AddOptions(
637 BoolOption('update_ref', 'Update test reference outputs', False)
638 )
639
640# These options get exported to #defines in config/*.hh (see src/SConscript).
641env.ExportOptions = ['FULL_SYSTEM', 'ALPHA_TLASER', 'USE_FENV', \
642 'USE_MYSQL', 'NO_FAST_ALLOC', 'FAST_ALLOC_DEBUG', \
643 'FAST_ALLOC_STATS', 'SS_COMPATIBLE_FP', \
644 'USE_CHECKER', 'TARGET_ISA']
645
646# Define a handy 'no-op' action
647def no_action(target, source, env):
648 return 0
649
650env.NoAction = Action(no_action, None)
651
652###################################################
653#
654# Define a SCons builder for configuration flag headers.
655#
656###################################################
657
658# This function generates a config header file that #defines the
659# option symbol to the current option setting (0 or 1). The source
660# operands are the name of the option and a Value node containing the
661# value of the option.
662def build_config_file(target, source, env):
663 (option, value) = [s.get_contents() for s in source]
664 f = file(str(target[0]), 'w')
665 print >> f, '#define', option, value
666 f.close()
667 return None
668
669# Generate the message to be printed when building the config file.
670def build_config_file_string(target, source, env):
671 (option, value) = [s.get_contents() for s in source]
672 return "Defining %s as %s in %s." % (option, value, target[0])
673
674# Combine the two functions into a scons Action object.
675config_action = Action(build_config_file, build_config_file_string)
676
677# The emitter munges the source & target node lists to reflect what
678# we're really doing.
679def config_emitter(target, source, env):
680 # extract option name from Builder arg
681 option = str(target[0])
682 # True target is config header file
683 target = joinpath('config', option.lower() + '.hh')
684 val = env[option]
685 if isinstance(val, bool):
686 # Force value to 0/1
687 val = int(val)
688 elif isinstance(val, str):
689 val = '"' + val + '"'
690
691 # Sources are option name & value (packaged in SCons Value nodes)
692 return ([target], [Value(option), Value(val)])
693
694config_builder = Builder(emitter = config_emitter, action = config_action)
695
696env.Append(BUILDERS = { 'ConfigFile' : config_builder })
697
698###################################################
699#
700# Define a SCons builder for copying files. This is used by the
701# Python zipfile code in src/python/SConscript, but is placed up here
702# since it's potentially more generally applicable.
703#
704###################################################
705
706copy_builder = Builder(action = Copy("$TARGET", "$SOURCE"))
707
708env.Append(BUILDERS = { 'CopyFile' : copy_builder })
709
710###################################################
711#
712# Define a simple SCons builder to concatenate files.
713#
714# Used to append the Python zip archive to the executable.
715#
716###################################################
717
718concat_builder = Builder(action = Action(['cat $SOURCES > $TARGET',
719 'chmod +x $TARGET']))
720
721env.Append(BUILDERS = { 'Concat' : concat_builder })
722
723
724# libelf build is shared across all configs in the build root.
725env.SConscript('ext/libelf/SConscript',
726 build_dir = joinpath(build_root, 'libelf'),
727 exports = 'env')
728
729# gzstream build is shared across all configs in the build root.
730env.SConscript('ext/gzstream/SConscript',
731 build_dir = joinpath(build_root, 'gzstream'),
732 exports = 'env')
733
734###################################################
735#
736# This function is used to set up a directory with switching headers
737#
738###################################################
739
740env['ALL_ISA_LIST'] = all_isa_list
741def make_switching_dir(dirname, switch_headers, env):
742 # Generate the header. target[0] is the full path of the output
743 # header to generate. 'source' is a dummy variable, since we get the
744 # list of ISAs from env['ALL_ISA_LIST'].
745 def gen_switch_hdr(target, source, env):
746 fname = str(target[0])
747 basename = os.path.basename(fname)
748 f = open(fname, 'w')
749 f.write('#include "arch/isa_specific.hh"\n')
750 cond = '#if'
751 for isa in all_isa_list:
752 f.write('%s THE_ISA == %s_ISA\n#include "%s/%s/%s"\n'
753 % (cond, isa.upper(), dirname, isa, basename))
754 cond = '#elif'
755 f.write('#else\n#error "THE_ISA not set"\n#endif\n')
756 f.close()
757 return 0
758
759 # String to print when generating header
760 def gen_switch_hdr_string(target, source, env):
761 return "Generating switch header " + str(target[0])
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775#
776# Define build environments for selected configurations.
777#
778###################################################
779
780# rename base env
781base_env = env
782
783for build_path in build_paths:
784 print "Building in", build_path
785
786 # Make a copy of the build-root environment to use for this config.
787 env = base_env.Copy()
788 env['BUILDDIR'] = build_path
789
790 # build_dir is the tail component of build path, and is used to
791 # determine the build parameters (e.g., 'ALPHA_SE')
792 (build_root, build_dir) = os.path.split(build_path)
793
794 # Set env options according to the build directory config.
795 sticky_opts.files = []
796 # Options for $BUILD_ROOT/$BUILD_DIR are stored in
797 # $BUILD_ROOT/options/$BUILD_DIR so you can nuke
798 # $BUILD_ROOT/$BUILD_DIR without losing your options settings.
799 current_opts_file = joinpath(build_root, 'options', build_dir)
800 if isfile(current_opts_file):
801 sticky_opts.files.append(current_opts_file)
802 print "Using saved options file %s" % current_opts_file
803 else:
804 # Build dir-specific options file doesn't exist.
805
806 # Make sure the directory is there so we can create it later
807 opt_dir = os.path.dirname(current_opts_file)
808 if not isdir(opt_dir):
809 os.mkdir(opt_dir)
810
811 # Get default build options from source tree. Options are
812 # normally determined by name of $BUILD_DIR, but can be
813 # overriden by 'default=' arg on command line.
814 default_opts_file = joinpath('build_opts',
815 ARGUMENTS.get('default', build_dir))
816 if isfile(default_opts_file):
817 sticky_opts.files.append(default_opts_file)
818 print "Options file %s not found,\n using defaults in %s" \
819 % (current_opts_file, default_opts_file)
820 else:
821 print "Error: cannot find options file %s or %s" \
822 % (current_opts_file, default_opts_file)
823 Exit(1)
824
825 # Apply current option settings to env
826 sticky_opts.Update(env)
827 nonsticky_opts.Update(env)
828
829 help_text += "\nSticky options for %s:\n" % build_dir \
830 + sticky_opts.GenerateHelpText(env) \
831 + "\nNon-sticky options for %s:\n" % build_dir \
832 + nonsticky_opts.GenerateHelpText(env)
833
834 # Process option settings.
835
836 if not have_fenv and env['USE_FENV']:
837 print "Warning: <fenv.h> not available; " \
838 "forcing USE_FENV to False in", build_dir + "."
839 env['USE_FENV'] = False
840
841 if not env['USE_FENV']:
842 print "Warning: No IEEE FP rounding mode control in", build_dir + "."
843 print " FP results may deviate slightly from other platforms."
844
845 if env['EFENCE']:
846 env.Append(LIBS=['efence'])
847
848 if env['USE_MYSQL']:
849 if not have_mysql:
850 print "Warning: MySQL not available; " \
851 "forcing USE_MYSQL to False in", build_dir + "."
852 env['USE_MYSQL'] = False
853 else:
854 print "Compiling in", build_dir, "with MySQL support."
855 env.ParseConfig(mysql_config_libs)
856 env.ParseConfig(mysql_config_include)
857
858 # Save sticky option settings back to current options file
859 sticky_opts.Save(current_opts_file, env)
860
861 if env['USE_SSE2']:
862 env.Append(CCFLAGS='-msse2')
863
864 # The src/SConscript file sets up the build rules in 'env' according
865 # to the configured options. It returns a list of environments,
866 # one for each variant build (debug, opt, etc.)
867 envList = SConscript('src/SConscript', build_dir = build_path,
868 exports = 'env')
869
870 # Set up the regression tests for each build.
871 for e in envList:
872 SConscript('tests/SConscript',
873 build_dir = joinpath(build_path, 'tests', e.Label),
874 exports = { 'env' : e }, duplicate = False)
875
876Help(help_text)
877
878
879###################################################
880#
881# Let SCons do its thing. At this point SCons will use the defined
882# build environments to build the requested targets.
883#
884###################################################
885
2
3# Copyright (c) 2004-2005 The Regents of The University of Michigan
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions are
8# met: redistributions of source code must retain the above copyright
--- 13 unchanged lines hidden (view full) ---
22# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28#
29# Authors: Steve Reinhardt
30
31###################################################
32#
33# SCons top-level build description (SConstruct) file.
34#
35# While in this directory ('m5'), just type 'scons' to build the default
36# configuration (see below), or type 'scons build/<CONFIG>/<binary>'
37# to build some other configuration (e.g., 'build/ALPHA_FS/m5.opt' for
--- 20 unchanged lines hidden (view full) ---
58#
59# You can use 'scons -H' to print scons options. If you're in this
60# 'm5' directory (or use -u or -C to tell scons where to find this
61# file), you can use 'scons -h' to print all the M5-specific build
62# options as well.
63#
64###################################################
65
66import sys
67import os
68import re
69
70from os.path import isdir, isfile, join as joinpath
71
72import SCons
73
74# Check for recent-enough Python and SCons versions. If your system's
75# default installation of Python is not recent enough, you can use a
76# non-default installation of the Python interpreter by either (1)
77# rearranging your PATH so that scons finds the non-default 'python'
78# first or (2) explicitly invoking an alternative interpreter on the
79# scons script, e.g., "/usr/local/bin/python2.4 `which scons` [args]".
80EnsurePythonVersion(2,4)
81
82# Import subprocess after we check the version since it doesn't exist in
83# Python < 2.4.
84import subprocess
85
86# helper function: compare arrays or strings of version numbers.
87# E.g., compare_version((1,3,25), (1,4,1)')
88# returns -1, 0, 1 if v1 is <, ==, > v2
89def compare_versions(v1, v2):
90 def make_version_list(v):
91 if isinstance(v, (list,tuple)):
92 return v
93 elif isinstance(v, str):
--- 7 unchanged lines hidden (view full) ---
101 for n1,n2 in zip(v1, v2):
102 if n1 < n2: return -1
103 if n1 > n2: return 1
104 # all corresponding values are equal... see if one has extra values
105 if len(v1) < len(v2): return -1
106 if len(v1) > len(v2): return 1
107 return 0
108
109# SCons version numbers need special processing because they can have
110# charecters and an release date embedded in them. This function does
111# the magic to extract them in a similar way to the SCons internal function
112# function does and then checks that the current version is not contained in
113# a list of version tuples (bad_ver_strs)
114def CheckSCons(bad_ver_strs):
115 def scons_ver(v):
116 num_parts = v.split(' ')[0].split('.')
117 major = int(num_parts[0])
118 minor = int(re.match('\d+', num_parts[1]).group())
119 rev = 0
120 rdate = 0
121 if len(num_parts) > 2:
122 try: rev = int(re.match('\d+', num_parts[2]).group())
123 except: pass
124 rev_parts = num_parts[2].split('d')
125 if len(rev_parts) > 1:
126 rdate = int(re.match('\d+', rev_parts[1]).group())
127
128 return (major, minor, rev, rdate)
129
130 sc_ver = scons_ver(SCons.__version__)
131 for bad_ver in bad_ver_strs:
132 bv = (scons_ver(bad_ver[0]), scons_ver(bad_ver[1]))
133 if compare_versions(sc_ver, bv[0]) != -1 and\
134 compare_versions(sc_ver, bv[1]) != 1:
135 print "The version of SCons that you have installed: ", SCons.__version__
136 print "has a bug that prevents it from working correctly with M5."
137 print "Please install a version NOT contained within the following",
138 print "ranges (inclusive):"
139 for bad_ver in bad_ver_strs:
140 print " %s - %s" % bad_ver
141 Exit(2)
142
143CheckSCons((
144 # We need a version that is 0.96.91 or newer
145 ('0.0.0', '0.96.90'),
146 ))
147
148
149# The absolute path to the current directory (where this file lives).
150ROOT = Dir('.').abspath
151
152# Path to the M5 source tree.
153SRCDIR = joinpath(ROOT, 'src')
154
155# tell python where to find m5 python code
156sys.path.append(joinpath(ROOT, 'src/python'))
157
158def check_style_hook(ui):
159 ui.readconfig(joinpath(ROOT, '.hg', 'hgrc'))
160 style_hook = ui.config('hooks', 'pretxncommit.style', None)
161
162 if not style_hook:
163 print """\
164You're missing the M5 style hook.
165Please install the hook so we can ensure that all code fits a common style.
--- 12 unchanged lines hidden (view full) ---
178
179if ARGUMENTS.get('IGNORE_STYLE') != 'True' and isdir(joinpath(ROOT, '.hg')):
180 try:
181 from mercurial import ui
182 check_style_hook(ui.ui())
183 except ImportError:
184 pass
185
186###################################################
187#
188# Figure out which configurations to set up based on the path(s) of
189# the target(s).
190#
191###################################################
192
193# Find default configuration & binary.
194Default(os.environ.get('M5_DEFAULT_BINARY', 'build/ALPHA_SE/m5.debug'))
195
196# helper function: find last occurrence of element in list
197def rfind(l, elt, offs = -1):
198 for i in range(len(l)+offs, 0, -1):
199 if l[i] == elt:
200 return i
201 raise ValueError, "element not found"
202
203# Each target must have 'build' in the interior of the path; the
204# directory below this will determine the build parameters. For
205# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we
206# recognize that ALPHA_SE specifies the configuration because it
207# follow 'build' in the bulid path.
208
209# Generate absolute paths to targets so we can see where the build dir is
210if COMMAND_LINE_TARGETS:
211 # Ask SCons which directory it was invoked from
212 launch_dir = GetLaunchDir()
213 # Make targets relative to invocation directory
214 abs_targets = map(lambda x: os.path.normpath(joinpath(launch_dir, str(x))),
215 COMMAND_LINE_TARGETS)
216else:
217 # Default targets are relative to root of tree
218 abs_targets = map(lambda x: os.path.normpath(joinpath(ROOT, str(x))),
219 DEFAULT_TARGETS)
220
221
222# Generate a list of the unique build roots and configs that the
223# collected targets reference.
224build_paths = []
225build_root = None
226for t in abs_targets:
227 path_dirs = t.split('/')
228 try:
229 build_top = rfind(path_dirs, 'build', -2)
230 except:
231 print "Error: no non-leaf 'build' dir found on target path", t
232 Exit(1)
233 this_build_root = joinpath('/',*path_dirs[:build_top+1])
234 if not build_root:
235 build_root = this_build_root
236 else:
237 if this_build_root != build_root:
238 print "Error: build targets not under same build root\n"\
239 " %s\n %s" % (build_root, this_build_root)
240 Exit(1)
241 build_path = joinpath('/',*path_dirs[:build_top+2])
242 if build_path not in build_paths:
243 build_paths.append(build_path)
244
245# Make sure build_root exists (might not if this is the first build there)
246if not isdir(build_root):
247 os.mkdir(build_root)
248
249###################################################
250#
251# Set up the default build environment. This environment is copied
252# and modified according to each selected configuration.
253#
254###################################################
255
256env = Environment(ENV = os.environ, # inherit user's environment vars
257 ROOT = ROOT,
258 SRCDIR = SRCDIR)
259
260Export('env')
261
262env.SConsignFile(joinpath(build_root,"sconsign"))
263
264# Default duplicate option is to use hard links, but this messes up
265# when you use emacs to edit a file in the target dir, as emacs moves
266# file to file~ then copies to file, breaking the link. Symbolic
267# (soft) links work better.
268env.SetOption('duplicate', 'soft-copy')
269
270# I waffle on this setting... it does avoid a few painful but
271# unnecessary builds, but it also seems to make trivial builds take
272# noticeably longer.
273if False:
274 env.TargetSignatures('content')
275
276#
277# Set up global sticky options... these are common to an entire build
278# tree (not specific to a particular build like ALPHA_SE)
279#
280
281# Option validators & converters for global sticky options
282def PathListMakeAbsolute(val):
283 if not val:
284 return val
285 f = lambda p: os.path.abspath(os.path.expanduser(p))
286 return ':'.join(map(f, val.split(':')))
287
288def PathListAllExist(key, val, env):
289 if not val:
290 return
291 paths = val.split(':')
292 for path in paths:
293 if not isdir(path):
294 raise SCons.Errors.UserError("Path does not exist: '%s'" % path)
295
296global_sticky_opts_file = joinpath(build_root, 'options.global')
297
298global_sticky_opts = Options(global_sticky_opts_file, args=ARGUMENTS)
299
300global_sticky_opts.AddOptions(
301 ('CC', 'C compiler', os.environ.get('CC', env['CC'])),
302 ('CXX', 'C++ compiler', os.environ.get('CXX', env['CXX'])),
303 ('BATCH', 'Use batch pool for build and tests', False),
304 ('BATCH_CMD', 'Batch pool submission command name', 'qdo'),
305 ('EXTRAS', 'Add Extra directories to the compilation', '',
306 PathListAllExist, PathListMakeAbsolute)
307 )
308
309
310# base help text
311help_text = '''
312Usage: scons [scons options] [build options] [target(s)]
313
314'''
315
316help_text += "Global sticky options:\n" \
317 + global_sticky_opts.GenerateHelpText(env)
318
319# Update env with values from ARGUMENTS & file global_sticky_opts_file
320global_sticky_opts.Update(env)
321
322# Save sticky option settings back to current options file
323global_sticky_opts.Save(global_sticky_opts_file, env)
324
325# Parse EXTRAS option to build list of all directories where we're
326# look for sources etc. This list is exported as base_dir_list.
327base_dir = joinpath(ROOT, 'src')
328if env['EXTRAS']:
329 extras_dir_list = env['EXTRAS'].split(':')
330else:
331 extras_dir_list = []
332
333Export('base_dir')
334Export('extras_dir_list')
335
336# M5_PLY is used by isa_parser.py to find the PLY package.
337env.Append(ENV = { 'M5_PLY' : str(Dir('ext/ply')) })
338env['GCC'] = subprocess.Popen(env['CXX'] + ' --version', shell=True,
339 stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
340 close_fds=True).communicate()[0].find('g++') >= 0
341env['SUNCC'] = subprocess.Popen(env['CXX'] + ' -V', shell=True,
342 stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
343 close_fds=True).communicate()[0].find('Sun C++') >= 0
344env['ICC'] = subprocess.Popen(env['CXX'] + ' -V', shell=True,
345 stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
346 close_fds=True).communicate()[0].find('Intel') >= 0
347if env['GCC'] + env['SUNCC'] + env['ICC'] > 1:
348 print 'Error: How can we have two at the same time?'
349 Exit(1)
350
351
352# Set up default C++ compiler flags
353if env['GCC']:
354 env.Append(CCFLAGS='-pipe')
355 env.Append(CCFLAGS='-fno-strict-aliasing')
356 env.Append(CCFLAGS=Split('-Wall -Wno-sign-compare -Werror -Wundef'))
357 env.Append(CXXFLAGS='-Wno-deprecated')
358elif env['ICC']:
359 pass #Fix me... add warning flags once we clean up icc warnings
--- 25 unchanged lines hidden (view full) ---
385
386# Check for SWIG
387if not env.has_key('SWIG'):
388 print 'Error: SWIG utility not found.'
389 print ' Please install (see http://www.swig.org) and retry.'
390 Exit(1)
391
392# Check for appropriate SWIG version
393swig_version = os.popen('swig -version').read().split()
394# First 3 words should be "SWIG Version x.y.z"
395if len(swig_version) < 3 or \
396 swig_version[0] != 'SWIG' or swig_version[1] != 'Version':
397 print 'Error determining SWIG version.'
398 Exit(1)
399
400min_swig_version = '1.3.28'
401if compare_versions(swig_version[2], min_swig_version) < 0:
--- 63 unchanged lines hidden (view full) ---
465# way so don't need to check the return code.
466conf.CheckLeading()
467
468# Check if we should compile a 64 bit binary on Mac OS X/Darwin
469try:
470 import platform
471 uname = platform.uname()
472 if uname[0] == 'Darwin' and compare_versions(uname[2], '9.0.0') >= 0:
473 if int(subprocess.Popen('sysctl -n hw.cpu64bit_capable', shell=True,
474 stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
475 close_fds=True).communicate()[0][0]):
476 env.Append(CCFLAGS='-arch x86_64')
477 env.Append(CFLAGS='-arch x86_64')
478 env.Append(LINKFLAGS='-arch x86_64')
479 env.Append(ASFLAGS='-arch x86_64')
480except:
481 pass
482
483# Recent versions of scons substitute a "Null" object for Configure()
--- 15 unchanged lines hidden (view full) ---
499
500 conf = NullConf(env)
501
502# Find Python include and library directories for embedding the
503# interpreter. For consistency, we will use the same Python
504# installation used to run scons (and thus this script). If you want
505# to link in an alternate version, see above for instructions on how
506# to invoke scons with a different copy of the Python interpreter.
507
508# Get brief Python version name (e.g., "python2.4") for locating
509# include & library files
510py_version_name = 'python' + sys.version[:3]
511
512# include path, e.g. /usr/local/include/python2.4
513py_header_path = joinpath(sys.exec_prefix, 'include', py_version_name)
514env.Append(CPPPATH = py_header_path)
515# verify that it works
516if not conf.CheckHeader('Python.h', '<>'):
517 print "Error: can't find Python.h header in", py_header_path
518 Exit(1)
519
520# add library path too if it's not in the default place
521py_lib_path = None
522if sys.exec_prefix != '/usr':
523 py_lib_path = joinpath(sys.exec_prefix, 'lib')
524elif sys.platform == 'cygwin':
525 # cygwin puts the .dll in /bin for some reason
526 py_lib_path = '/bin'
527if py_lib_path:
528 env.Append(LIBPATH = py_lib_path)
529 print 'Adding', py_lib_path, 'to LIBPATH for', py_version_name
530if not conf.CheckLib(py_version_name):
531 print "Error: can't find Python library", py_version_name
532 Exit(1)
533
534# On Solaris you need to use libsocket for socket ops
535if not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'):
536 if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'):
537 print "Can't find library with socket calls (e.g. accept())"
538 Exit(1)
539
540# Check for zlib. If the check passes, libz will be automatically
--- 5 unchanged lines hidden (view full) ---
546 Exit(1)
547
548# Check for <fenv.h> (C99 FP environment control)
549have_fenv = conf.CheckHeader('fenv.h', '<>')
550if not have_fenv:
551 print "Warning: Header file <fenv.h> not found."
552 print " This host has no IEEE FP rounding mode control."
553
554# Check for mysql.
555mysql_config = WhereIs('mysql_config')
556have_mysql = mysql_config != None
557
558# Check MySQL version.
559if have_mysql:
560 mysql_version = os.popen(mysql_config + ' --version').read()
561 min_mysql_version = '4.1'
562 if compare_versions(mysql_version, min_mysql_version) < 0:
563 print 'Warning: MySQL', min_mysql_version, 'or newer required.'
564 print ' Version', mysql_version, 'detected.'
565 have_mysql = False
566
567# Set up mysql_config commands.
568if have_mysql:
569 mysql_config_include = mysql_config + ' --include'
570 if os.system(mysql_config_include + ' > /dev/null') != 0:
571 # older mysql_config versions don't support --include, use
572 # --cflags instead
573 mysql_config_include = mysql_config + ' --cflags | sed s/\\\'//g'
574 # This seems to work in all versions
575 mysql_config_libs = mysql_config + ' --libs'
576
577env = conf.Finish()
578
579# Define the universe of supported ISAs
580all_isa_list = [ ]
581Export('all_isa_list')
582
583# Define the universe of supported CPU models
584all_cpu_list = [ ]
585default_cpus = [ ]
586Export('all_cpu_list', 'default_cpus')
587
588# Sticky options get saved in the options file so they persist from
589# one invocation to the next (unless overridden, in which case the new
590# value becomes sticky).
591sticky_opts = Options(args=ARGUMENTS)
592Export('sticky_opts')
593
594# Non-sticky options only apply to the current build.
595nonsticky_opts = Options(args=ARGUMENTS)
596Export('nonsticky_opts')
597
598# Walk the tree and execute all SConsopts scripts that wil add to the
599# above options
600for bdir in [ base_dir ] + extras_dir_list:
601 for root, dirs, files in os.walk(bdir):
602 if 'SConsopts' in files:
603 print "Reading", joinpath(root, 'SConsopts')
604 SConscript(joinpath(root, 'SConsopts'))
605
606all_isa_list.sort()
607all_cpu_list.sort()
608default_cpus.sort()
609
610sticky_opts.AddOptions(
611 EnumOption('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list),
612 BoolOption('FULL_SYSTEM', 'Full-system support', False),
613 # There's a bug in scons 0.96.1 that causes ListOptions with list
614 # values (more than one value) not to be able to be restored from
615 # a saved option file. If this causes trouble then upgrade to
616 # scons 0.96.90 or later.
617 ListOption('CPU_MODELS', 'CPU models', default_cpus, all_cpu_list),
618 BoolOption('NO_FAST_ALLOC', 'Disable fast object allocator', False),
619 BoolOption('FAST_ALLOC_DEBUG', 'Enable fast object allocator debugging',
620 False),
621 BoolOption('FAST_ALLOC_STATS', 'Enable fast object allocator statistics',
622 False),
623 BoolOption('EFENCE', 'Link with Electric Fence malloc debugger',
624 False),
625 BoolOption('SS_COMPATIBLE_FP',
626 'Make floating-point results compatible with SimpleScalar',
627 False),
628 BoolOption('USE_SSE2',
629 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts',
630 False),
631 BoolOption('USE_MYSQL', 'Use MySQL for stats output', have_mysql),
632 BoolOption('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv),
633 BoolOption('USE_CHECKER', 'Use checker for detailed CPU models', False),
634 )
635
636nonsticky_opts.AddOptions(
637 BoolOption('update_ref', 'Update test reference outputs', False)
638 )
639
640# These options get exported to #defines in config/*.hh (see src/SConscript).
641env.ExportOptions = ['FULL_SYSTEM', 'ALPHA_TLASER', 'USE_FENV', \
642 'USE_MYSQL', 'NO_FAST_ALLOC', 'FAST_ALLOC_DEBUG', \
643 'FAST_ALLOC_STATS', 'SS_COMPATIBLE_FP', \
644 'USE_CHECKER', 'TARGET_ISA']
645
646# Define a handy 'no-op' action
647def no_action(target, source, env):
648 return 0
649
650env.NoAction = Action(no_action, None)
651
652###################################################
653#
654# Define a SCons builder for configuration flag headers.
655#
656###################################################
657
658# This function generates a config header file that #defines the
659# option symbol to the current option setting (0 or 1). The source
660# operands are the name of the option and a Value node containing the
661# value of the option.
662def build_config_file(target, source, env):
663 (option, value) = [s.get_contents() for s in source]
664 f = file(str(target[0]), 'w')
665 print >> f, '#define', option, value
666 f.close()
667 return None
668
669# Generate the message to be printed when building the config file.
670def build_config_file_string(target, source, env):
671 (option, value) = [s.get_contents() for s in source]
672 return "Defining %s as %s in %s." % (option, value, target[0])
673
674# Combine the two functions into a scons Action object.
675config_action = Action(build_config_file, build_config_file_string)
676
677# The emitter munges the source & target node lists to reflect what
678# we're really doing.
679def config_emitter(target, source, env):
680 # extract option name from Builder arg
681 option = str(target[0])
682 # True target is config header file
683 target = joinpath('config', option.lower() + '.hh')
684 val = env[option]
685 if isinstance(val, bool):
686 # Force value to 0/1
687 val = int(val)
688 elif isinstance(val, str):
689 val = '"' + val + '"'
690
691 # Sources are option name & value (packaged in SCons Value nodes)
692 return ([target], [Value(option), Value(val)])
693
694config_builder = Builder(emitter = config_emitter, action = config_action)
695
696env.Append(BUILDERS = { 'ConfigFile' : config_builder })
697
698###################################################
699#
700# Define a SCons builder for copying files. This is used by the
701# Python zipfile code in src/python/SConscript, but is placed up here
702# since it's potentially more generally applicable.
703#
704###################################################
705
706copy_builder = Builder(action = Copy("$TARGET", "$SOURCE"))
707
708env.Append(BUILDERS = { 'CopyFile' : copy_builder })
709
710###################################################
711#
712# Define a simple SCons builder to concatenate files.
713#
714# Used to append the Python zip archive to the executable.
715#
716###################################################
717
718concat_builder = Builder(action = Action(['cat $SOURCES > $TARGET',
719 'chmod +x $TARGET']))
720
721env.Append(BUILDERS = { 'Concat' : concat_builder })
722
723
724# libelf build is shared across all configs in the build root.
725env.SConscript('ext/libelf/SConscript',
726 build_dir = joinpath(build_root, 'libelf'),
727 exports = 'env')
728
729# gzstream build is shared across all configs in the build root.
730env.SConscript('ext/gzstream/SConscript',
731 build_dir = joinpath(build_root, 'gzstream'),
732 exports = 'env')
733
734###################################################
735#
736# This function is used to set up a directory with switching headers
737#
738###################################################
739
740env['ALL_ISA_LIST'] = all_isa_list
741def make_switching_dir(dirname, switch_headers, env):
742 # Generate the header. target[0] is the full path of the output
743 # header to generate. 'source' is a dummy variable, since we get the
744 # list of ISAs from env['ALL_ISA_LIST'].
745 def gen_switch_hdr(target, source, env):
746 fname = str(target[0])
747 basename = os.path.basename(fname)
748 f = open(fname, 'w')
749 f.write('#include "arch/isa_specific.hh"\n')
750 cond = '#if'
751 for isa in all_isa_list:
752 f.write('%s THE_ISA == %s_ISA\n#include "%s/%s/%s"\n'
753 % (cond, isa.upper(), dirname, isa, basename))
754 cond = '#elif'
755 f.write('#else\n#error "THE_ISA not set"\n#endif\n')
756 f.close()
757 return 0
758
759 # String to print when generating header
760 def gen_switch_hdr_string(target, source, env):
761 return "Generating switch header " + str(target[0])
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775#
776# Define build environments for selected configurations.
777#
778###################################################
779
780# rename base env
781base_env = env
782
783for build_path in build_paths:
784 print "Building in", build_path
785
786 # Make a copy of the build-root environment to use for this config.
787 env = base_env.Copy()
788 env['BUILDDIR'] = build_path
789
790 # build_dir is the tail component of build path, and is used to
791 # determine the build parameters (e.g., 'ALPHA_SE')
792 (build_root, build_dir) = os.path.split(build_path)
793
794 # Set env options according to the build directory config.
795 sticky_opts.files = []
796 # Options for $BUILD_ROOT/$BUILD_DIR are stored in
797 # $BUILD_ROOT/options/$BUILD_DIR so you can nuke
798 # $BUILD_ROOT/$BUILD_DIR without losing your options settings.
799 current_opts_file = joinpath(build_root, 'options', build_dir)
800 if isfile(current_opts_file):
801 sticky_opts.files.append(current_opts_file)
802 print "Using saved options file %s" % current_opts_file
803 else:
804 # Build dir-specific options file doesn't exist.
805
806 # Make sure the directory is there so we can create it later
807 opt_dir = os.path.dirname(current_opts_file)
808 if not isdir(opt_dir):
809 os.mkdir(opt_dir)
810
811 # Get default build options from source tree. Options are
812 # normally determined by name of $BUILD_DIR, but can be
813 # overriden by 'default=' arg on command line.
814 default_opts_file = joinpath('build_opts',
815 ARGUMENTS.get('default', build_dir))
816 if isfile(default_opts_file):
817 sticky_opts.files.append(default_opts_file)
818 print "Options file %s not found,\n using defaults in %s" \
819 % (current_opts_file, default_opts_file)
820 else:
821 print "Error: cannot find options file %s or %s" \
822 % (current_opts_file, default_opts_file)
823 Exit(1)
824
825 # Apply current option settings to env
826 sticky_opts.Update(env)
827 nonsticky_opts.Update(env)
828
829 help_text += "\nSticky options for %s:\n" % build_dir \
830 + sticky_opts.GenerateHelpText(env) \
831 + "\nNon-sticky options for %s:\n" % build_dir \
832 + nonsticky_opts.GenerateHelpText(env)
833
834 # Process option settings.
835
836 if not have_fenv and env['USE_FENV']:
837 print "Warning: <fenv.h> not available; " \
838 "forcing USE_FENV to False in", build_dir + "."
839 env['USE_FENV'] = False
840
841 if not env['USE_FENV']:
842 print "Warning: No IEEE FP rounding mode control in", build_dir + "."
843 print " FP results may deviate slightly from other platforms."
844
845 if env['EFENCE']:
846 env.Append(LIBS=['efence'])
847
848 if env['USE_MYSQL']:
849 if not have_mysql:
850 print "Warning: MySQL not available; " \
851 "forcing USE_MYSQL to False in", build_dir + "."
852 env['USE_MYSQL'] = False
853 else:
854 print "Compiling in", build_dir, "with MySQL support."
855 env.ParseConfig(mysql_config_libs)
856 env.ParseConfig(mysql_config_include)
857
858 # Save sticky option settings back to current options file
859 sticky_opts.Save(current_opts_file, env)
860
861 if env['USE_SSE2']:
862 env.Append(CCFLAGS='-msse2')
863
864 # The src/SConscript file sets up the build rules in 'env' according
865 # to the configured options. It returns a list of environments,
866 # one for each variant build (debug, opt, etc.)
867 envList = SConscript('src/SConscript', build_dir = build_path,
868 exports = 'env')
869
870 # Set up the regression tests for each build.
871 for e in envList:
872 SConscript('tests/SConscript',
873 build_dir = joinpath(build_path, 'tests', e.Label),
874 exports = { 'env' : e }, duplicate = False)
875
876Help(help_text)
877
878
879###################################################
880#
881# Let SCons do its thing. At this point SCons will use the defined
882# build environments to build the requested targets.
883#
884###################################################
885