1# -*- mode:python -*- 2 3# Copyright (c) 2011 Advanced Micro Devices, Inc. 4# Copyright (c) 2009 The Hewlett-Packard Development Company 5# Copyright (c) 2004-2005 The Regents of The University of Michigan 6# All rights reserved. 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions are 10# met: redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer; 12# redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution; 15# neither the name of the copyright holders nor the names of its 16# contributors may be used to endorse or promote products derived from 17# this software without specific prior written permission. 18# 19# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30# 31# Authors: Steve Reinhardt 32# Nathan Binkert 33 34################################################### 35# 36# SCons top-level build description (SConstruct) file. 37# 38# While in this directory ('m5'), just type 'scons' to build the default 39# configuration (see below), or type 'scons build/<CONFIG>/<binary>' 40# to build some other configuration (e.g., 'build/ALPHA_FS/m5.opt' for 41# the optimized full-system version). 42# 43# You can build M5 in a different directory as long as there is a 44# 'build/<CONFIG>' somewhere along the target path. The build system 45# expects that all configs under the same build directory are being 46# built for the same host system. 47# 48# Examples: 49# 50# The following two commands are equivalent. The '-u' option tells 51# scons to search up the directory tree for this SConstruct file. 52# % cd <path-to-src>/m5 ; scons build/ALPHA_FS/m5.debug 53# % cd <path-to-src>/m5/build/ALPHA_FS; scons -u m5.debug 54# 55# The following two commands are equivalent and demonstrate building 56# in a directory outside of the source tree. The '-C' option tells 57# scons to chdir to the specified directory to find this SConstruct 58# file. 59# % cd <path-to-src>/m5 ; scons /local/foo/build/ALPHA_FS/m5.debug 60# % cd /local/foo/build/ALPHA_FS; scons -C <path-to-src>/m5 m5.debug 61# 62# You can use 'scons -H' to print scons options. If you're in this 63# 'm5' directory (or use -u or -C to tell scons where to find this 64# file), you can use 'scons -h' to print all the M5-specific build 65# options as well. 66# 67################################################### 68 69# Check for recent-enough Python and SCons versions. 70try: 71 # Really old versions of scons only take two options for the 72 # function, so check once without the revision and once with the 73 # revision, the first instance will fail for stuff other than 74 # 0.98, and the second will fail for 0.98.0 75 EnsureSConsVersion(0, 98) 76 EnsureSConsVersion(0, 98, 1) 77except SystemExit, e: 78 print """ 79For more details, see: 80 http://m5sim.org/wiki/index.php/Compiling_M5 81""" 82 raise 83 84# We ensure the python version early because we have stuff that 85# requires python 2.4 86try: 87 EnsurePythonVersion(2, 4) 88except SystemExit, e: 89 print """ 90You can use a non-default installation of the Python interpreter by 91either (1) rearranging your PATH so that scons finds the non-default 92'python' first or (2) explicitly invoking an alternative interpreter 93on the scons script. 94 95For more details, see: 96 http://m5sim.org/wiki/index.php/Using_a_non-default_Python_installation 97""" 98 raise 99 100# Global Python includes 101import os 102import re 103import subprocess 104import sys 105 106from os import mkdir, environ 107from os.path import abspath, basename, dirname, expanduser, normpath 108from os.path import exists, isdir, isfile 109from os.path import join as joinpath, split as splitpath 110 111# SCons includes 112import SCons 113import SCons.Node 114 115extra_python_paths = [ 116 Dir('src/python').srcnode().abspath, # M5 includes 117 Dir('ext/ply').srcnode().abspath, # ply is used by several files 118 ] 119 120sys.path[1:1] = extra_python_paths 121 122from m5.util import compareVersions, readCommand 123 124help_texts = { 125 "options" : "", 126 "global_vars" : "", 127 "local_vars" : "" 128} 129 130Export("help_texts") 131 132def AddM5Option(*args, **kwargs): 133 col_width = 30 134 135 help = " " + ", ".join(args) 136 if "help" in kwargs: 137 length = len(help) 138 if length >= col_width: 139 help += "\n" + " " * col_width 140 else: 141 help += " " * (col_width - length) 142 help += kwargs["help"] 143 help_texts["options"] += help + "\n" 144 145 AddOption(*args, **kwargs) 146 147AddM5Option('--colors', dest='use_colors', action='store_true', 148 help="Add color to abbreviated scons output") 149AddM5Option('--no-colors', dest='use_colors', action='store_false', 150 help="Don't add color to abbreviated scons output") 151AddM5Option('--default', dest='default', type='string', action='store', 152 help='Override which build_opts file to use for defaults') 153AddM5Option('--ignore-style', dest='ignore_style', action='store_true', 154 help='Disable style checking hooks') 155AddM5Option('--update-ref', dest='update_ref', action='store_true', 156 help='Update test reference outputs') 157AddM5Option('--verbose', dest='verbose', action='store_true', 158 help='Print full tool command lines') 159 160use_colors = GetOption('use_colors') 161if use_colors: 162 from m5.util.terminal import termcap 163elif use_colors is None: 164 # option unspecified; default behavior is to use colors iff isatty 165 from m5.util.terminal import tty_termcap as termcap 166else: 167 from m5.util.terminal import no_termcap as termcap 168 169######################################################################## 170# 171# Set up the main build environment. 172# 173######################################################################## 174use_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 'PATH', 175 'PYTHONPATH', 'RANLIB' ]) 176 177use_env = {} 178for key,val in os.environ.iteritems(): 179 if key in use_vars or key.startswith("M5"): 180 use_env[key] = val 181 182main = Environment(ENV=use_env) 183main.root = Dir(".") # The current directory (where this file lives). 184main.srcdir = Dir("src") # The source directory 185 186# add useful python code PYTHONPATH so it can be used by subprocesses 187# as well 188main.AppendENVPath('PYTHONPATH', extra_python_paths) 189 190######################################################################## 191# 192# Mercurial Stuff. 193# 194# If the M5 directory is a mercurial repository, we should do some 195# extra things. 196# 197######################################################################## 198 199hgdir = main.root.Dir(".hg") 200 201mercurial_style_message = """ 202You're missing the M5 style hook. 203Please install the hook so we can ensure that all code fits a common style. 204 205All you'd need to do is add the following lines to your repository .hg/hgrc 206or your personal .hgrc 207---------------- 208 209[extensions] 210style = %s/util/style.py 211 212[hooks] 213pretxncommit.style = python:style.check_style 214pre-qrefresh.style = python:style.check_style 215""" % (main.root) 216 217mercurial_bin_not_found = """ 218Mercurial binary cannot be found, unfortunately this means that we 219cannot easily determine the version of M5 that you are running and 220this makes error messages more difficult to collect. Please consider 221installing mercurial if you choose to post an error message 222""" 223 224mercurial_lib_not_found = """ 225Mercurial libraries cannot be found, ignoring style hook 226If you are actually a M5 developer, please fix this and 227run the style hook. It is important. 228""" 229
| 1# -*- mode:python -*- 2 3# Copyright (c) 2011 Advanced Micro Devices, Inc. 4# Copyright (c) 2009 The Hewlett-Packard Development Company 5# Copyright (c) 2004-2005 The Regents of The University of Michigan 6# All rights reserved. 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions are 10# met: redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer; 12# redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution; 15# neither the name of the copyright holders nor the names of its 16# contributors may be used to endorse or promote products derived from 17# this software without specific prior written permission. 18# 19# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30# 31# Authors: Steve Reinhardt 32# Nathan Binkert 33 34################################################### 35# 36# SCons top-level build description (SConstruct) file. 37# 38# While in this directory ('m5'), just type 'scons' to build the default 39# configuration (see below), or type 'scons build/<CONFIG>/<binary>' 40# to build some other configuration (e.g., 'build/ALPHA_FS/m5.opt' for 41# the optimized full-system version). 42# 43# You can build M5 in a different directory as long as there is a 44# 'build/<CONFIG>' somewhere along the target path. The build system 45# expects that all configs under the same build directory are being 46# built for the same host system. 47# 48# Examples: 49# 50# The following two commands are equivalent. The '-u' option tells 51# scons to search up the directory tree for this SConstruct file. 52# % cd <path-to-src>/m5 ; scons build/ALPHA_FS/m5.debug 53# % cd <path-to-src>/m5/build/ALPHA_FS; scons -u m5.debug 54# 55# The following two commands are equivalent and demonstrate building 56# in a directory outside of the source tree. The '-C' option tells 57# scons to chdir to the specified directory to find this SConstruct 58# file. 59# % cd <path-to-src>/m5 ; scons /local/foo/build/ALPHA_FS/m5.debug 60# % cd /local/foo/build/ALPHA_FS; scons -C <path-to-src>/m5 m5.debug 61# 62# You can use 'scons -H' to print scons options. If you're in this 63# 'm5' directory (or use -u or -C to tell scons where to find this 64# file), you can use 'scons -h' to print all the M5-specific build 65# options as well. 66# 67################################################### 68 69# Check for recent-enough Python and SCons versions. 70try: 71 # Really old versions of scons only take two options for the 72 # function, so check once without the revision and once with the 73 # revision, the first instance will fail for stuff other than 74 # 0.98, and the second will fail for 0.98.0 75 EnsureSConsVersion(0, 98) 76 EnsureSConsVersion(0, 98, 1) 77except SystemExit, e: 78 print """ 79For more details, see: 80 http://m5sim.org/wiki/index.php/Compiling_M5 81""" 82 raise 83 84# We ensure the python version early because we have stuff that 85# requires python 2.4 86try: 87 EnsurePythonVersion(2, 4) 88except SystemExit, e: 89 print """ 90You can use a non-default installation of the Python interpreter by 91either (1) rearranging your PATH so that scons finds the non-default 92'python' first or (2) explicitly invoking an alternative interpreter 93on the scons script. 94 95For more details, see: 96 http://m5sim.org/wiki/index.php/Using_a_non-default_Python_installation 97""" 98 raise 99 100# Global Python includes 101import os 102import re 103import subprocess 104import sys 105 106from os import mkdir, environ 107from os.path import abspath, basename, dirname, expanduser, normpath 108from os.path import exists, isdir, isfile 109from os.path import join as joinpath, split as splitpath 110 111# SCons includes 112import SCons 113import SCons.Node 114 115extra_python_paths = [ 116 Dir('src/python').srcnode().abspath, # M5 includes 117 Dir('ext/ply').srcnode().abspath, # ply is used by several files 118 ] 119 120sys.path[1:1] = extra_python_paths 121 122from m5.util import compareVersions, readCommand 123 124help_texts = { 125 "options" : "", 126 "global_vars" : "", 127 "local_vars" : "" 128} 129 130Export("help_texts") 131 132def AddM5Option(*args, **kwargs): 133 col_width = 30 134 135 help = " " + ", ".join(args) 136 if "help" in kwargs: 137 length = len(help) 138 if length >= col_width: 139 help += "\n" + " " * col_width 140 else: 141 help += " " * (col_width - length) 142 help += kwargs["help"] 143 help_texts["options"] += help + "\n" 144 145 AddOption(*args, **kwargs) 146 147AddM5Option('--colors', dest='use_colors', action='store_true', 148 help="Add color to abbreviated scons output") 149AddM5Option('--no-colors', dest='use_colors', action='store_false', 150 help="Don't add color to abbreviated scons output") 151AddM5Option('--default', dest='default', type='string', action='store', 152 help='Override which build_opts file to use for defaults') 153AddM5Option('--ignore-style', dest='ignore_style', action='store_true', 154 help='Disable style checking hooks') 155AddM5Option('--update-ref', dest='update_ref', action='store_true', 156 help='Update test reference outputs') 157AddM5Option('--verbose', dest='verbose', action='store_true', 158 help='Print full tool command lines') 159 160use_colors = GetOption('use_colors') 161if use_colors: 162 from m5.util.terminal import termcap 163elif use_colors is None: 164 # option unspecified; default behavior is to use colors iff isatty 165 from m5.util.terminal import tty_termcap as termcap 166else: 167 from m5.util.terminal import no_termcap as termcap 168 169######################################################################## 170# 171# Set up the main build environment. 172# 173######################################################################## 174use_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 'PATH', 175 'PYTHONPATH', 'RANLIB' ]) 176 177use_env = {} 178for key,val in os.environ.iteritems(): 179 if key in use_vars or key.startswith("M5"): 180 use_env[key] = val 181 182main = Environment(ENV=use_env) 183main.root = Dir(".") # The current directory (where this file lives). 184main.srcdir = Dir("src") # The source directory 185 186# add useful python code PYTHONPATH so it can be used by subprocesses 187# as well 188main.AppendENVPath('PYTHONPATH', extra_python_paths) 189 190######################################################################## 191# 192# Mercurial Stuff. 193# 194# If the M5 directory is a mercurial repository, we should do some 195# extra things. 196# 197######################################################################## 198 199hgdir = main.root.Dir(".hg") 200 201mercurial_style_message = """ 202You're missing the M5 style hook. 203Please install the hook so we can ensure that all code fits a common style. 204 205All you'd need to do is add the following lines to your repository .hg/hgrc 206or your personal .hgrc 207---------------- 208 209[extensions] 210style = %s/util/style.py 211 212[hooks] 213pretxncommit.style = python:style.check_style 214pre-qrefresh.style = python:style.check_style 215""" % (main.root) 216 217mercurial_bin_not_found = """ 218Mercurial binary cannot be found, unfortunately this means that we 219cannot easily determine the version of M5 that you are running and 220this makes error messages more difficult to collect. Please consider 221installing mercurial if you choose to post an error message 222""" 223 224mercurial_lib_not_found = """ 225Mercurial libraries cannot be found, ignoring style hook 226If you are actually a M5 developer, please fix this and 227run the style hook. It is important. 228""" 229
|
260################################################### 261# 262# Figure out which configurations to set up based on the path(s) of 263# the target(s). 264# 265################################################### 266 267# Find default configuration & binary. 268Default(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA_SE/m5.debug')) 269 270# helper function: find last occurrence of element in list 271def rfind(l, elt, offs = -1): 272 for i in range(len(l)+offs, 0, -1): 273 if l[i] == elt: 274 return i 275 raise ValueError, "element not found" 276 277# Each target must have 'build' in the interior of the path; the 278# directory below this will determine the build parameters. For 279# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 280# recognize that ALPHA_SE specifies the configuration because it 281# follow 'build' in the bulid path. 282 283# Generate absolute paths to targets so we can see where the build dir is 284if COMMAND_LINE_TARGETS: 285 # Ask SCons which directory it was invoked from 286 launch_dir = GetLaunchDir() 287 # Make targets relative to invocation directory 288 abs_targets = [ normpath(joinpath(launch_dir, str(x))) for x in \ 289 COMMAND_LINE_TARGETS] 290else: 291 # Default targets are relative to root of tree 292 abs_targets = [ normpath(joinpath(main.root.abspath, str(x))) for x in \ 293 DEFAULT_TARGETS] 294 295 296# Generate a list of the unique build roots and configs that the 297# collected targets reference. 298variant_paths = [] 299build_root = None 300for t in abs_targets: 301 path_dirs = t.split('/') 302 try: 303 build_top = rfind(path_dirs, 'build', -2) 304 except: 305 print "Error: no non-leaf 'build' dir found on target path", t 306 Exit(1) 307 this_build_root = joinpath('/',*path_dirs[:build_top+1]) 308 if not build_root: 309 build_root = this_build_root 310 else: 311 if this_build_root != build_root: 312 print "Error: build targets not under same build root\n"\ 313 " %s\n %s" % (build_root, this_build_root) 314 Exit(1) 315 variant_path = joinpath('/',*path_dirs[:build_top+2]) 316 if variant_path not in variant_paths: 317 variant_paths.append(variant_path) 318 319# Make sure build_root exists (might not if this is the first build there) 320if not isdir(build_root): 321 mkdir(build_root) 322main['BUILDROOT'] = build_root 323 324Export('main') 325 326main.SConsignFile(joinpath(build_root, "sconsign")) 327 328# Default duplicate option is to use hard links, but this messes up 329# when you use emacs to edit a file in the target dir, as emacs moves 330# file to file~ then copies to file, breaking the link. Symbolic 331# (soft) links work better. 332main.SetOption('duplicate', 'soft-copy') 333 334# 335# Set up global sticky variables... these are common to an entire build 336# tree (not specific to a particular build like ALPHA_SE) 337# 338 339# Variable validators & converters for global sticky variables 340def PathListMakeAbsolute(val): 341 if not val: 342 return val 343 f = lambda p: abspath(expanduser(p)) 344 return ':'.join(map(f, val.split(':'))) 345 346def PathListAllExist(key, val, env): 347 if not val: 348 return 349 paths = val.split(':') 350 for path in paths: 351 if not isdir(path): 352 raise SCons.Errors.UserError("Path does not exist: '%s'" % path) 353 354global_vars_file = joinpath(build_root, 'variables.global') 355 356global_vars = Variables(global_vars_file, args=ARGUMENTS) 357 358global_vars.AddVariables( 359 ('CC', 'C compiler', environ.get('CC', main['CC'])), 360 ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 361 ('BATCH', 'Use batch pool for build and tests', False), 362 ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 363 ('M5_BUILD_CACHE', 'Cache built objects in this directory', False), 364 ('EXTRAS', 'Add extra directories to the compilation', '', 365 PathListAllExist, PathListMakeAbsolute), 366 ) 367 368# Update main environment with values from ARGUMENTS & global_vars_file 369global_vars.Update(main) 370help_texts["global_vars"] += global_vars.GenerateHelpText(main) 371 372# Save sticky variable settings back to current variables file 373global_vars.Save(global_vars_file, main) 374 375# Parse EXTRAS variable to build list of all directories where we're 376# look for sources etc. This list is exported as base_dir_list. 377base_dir = main.srcdir.abspath 378if main['EXTRAS']: 379 extras_dir_list = main['EXTRAS'].split(':') 380else: 381 extras_dir_list = [] 382 383Export('base_dir') 384Export('extras_dir_list') 385 386# the ext directory should be on the #includes path 387main.Append(CPPPATH=[Dir('ext')]) 388 389def strip_build_path(path, env): 390 path = str(path) 391 variant_base = env['BUILDROOT'] + os.path.sep 392 if path.startswith(variant_base): 393 path = path[len(variant_base):] 394 elif path.startswith('build/'): 395 path = path[6:] 396 return path 397 398# Generate a string of the form: 399# common/path/prefix/src1, src2 -> tgt1, tgt2 400# to print while building. 401class Transform(object): 402 # all specific color settings should be here and nowhere else 403 tool_color = termcap.Normal 404 pfx_color = termcap.Yellow 405 srcs_color = termcap.Yellow + termcap.Bold 406 arrow_color = termcap.Blue + termcap.Bold 407 tgts_color = termcap.Yellow + termcap.Bold 408 409 def __init__(self, tool, max_sources=99): 410 self.format = self.tool_color + (" [%8s] " % tool) \ 411 + self.pfx_color + "%s" \ 412 + self.srcs_color + "%s" \ 413 + self.arrow_color + " -> " \ 414 + self.tgts_color + "%s" \ 415 + termcap.Normal 416 self.max_sources = max_sources 417 418 def __call__(self, target, source, env, for_signature=None): 419 # truncate source list according to max_sources param 420 source = source[0:self.max_sources] 421 def strip(f): 422 return strip_build_path(str(f), env) 423 if len(source) > 0: 424 srcs = map(strip, source) 425 else: 426 srcs = [''] 427 tgts = map(strip, target) 428 # surprisingly, os.path.commonprefix is a dumb char-by-char string 429 # operation that has nothing to do with paths. 430 com_pfx = os.path.commonprefix(srcs + tgts) 431 com_pfx_len = len(com_pfx) 432 if com_pfx: 433 # do some cleanup and sanity checking on common prefix 434 if com_pfx[-1] == ".": 435 # prefix matches all but file extension: ok 436 # back up one to change 'foo.cc -> o' to 'foo.cc -> .o' 437 com_pfx = com_pfx[0:-1] 438 elif com_pfx[-1] == "/": 439 # common prefix is directory path: OK 440 pass 441 else: 442 src0_len = len(srcs[0]) 443 tgt0_len = len(tgts[0]) 444 if src0_len == com_pfx_len: 445 # source is a substring of target, OK 446 pass 447 elif tgt0_len == com_pfx_len: 448 # target is a substring of source, need to back up to 449 # avoid empty string on RHS of arrow 450 sep_idx = com_pfx.rfind(".") 451 if sep_idx != -1: 452 com_pfx = com_pfx[0:sep_idx] 453 else: 454 com_pfx = '' 455 elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".": 456 # still splitting at file extension: ok 457 pass 458 else: 459 # probably a fluke; ignore it 460 com_pfx = '' 461 # recalculate length in case com_pfx was modified 462 com_pfx_len = len(com_pfx) 463 def fmt(files): 464 f = map(lambda s: s[com_pfx_len:], files) 465 return ', '.join(f) 466 return self.format % (com_pfx, fmt(srcs), fmt(tgts)) 467 468Export('Transform') 469 470 471if GetOption('verbose'): 472 def MakeAction(action, string, *args, **kwargs): 473 return Action(action, *args, **kwargs) 474else: 475 MakeAction = Action 476 main['CCCOMSTR'] = Transform("CC") 477 main['CXXCOMSTR'] = Transform("CXX") 478 main['ASCOMSTR'] = Transform("AS") 479 main['SWIGCOMSTR'] = Transform("SWIG") 480 main['ARCOMSTR'] = Transform("AR", 0) 481 main['LINKCOMSTR'] = Transform("LINK", 0) 482 main['RANLIBCOMSTR'] = Transform("RANLIB", 0) 483 main['M4COMSTR'] = Transform("M4") 484 main['SHCCCOMSTR'] = Transform("SHCC") 485 main['SHCXXCOMSTR'] = Transform("SHCXX") 486Export('MakeAction') 487 488CXX_version = readCommand([main['CXX'],'--version'], exception=False) 489CXX_V = readCommand([main['CXX'],'-V'], exception=False) 490 491main['GCC'] = CXX_version and CXX_version.find('g++') >= 0 492main['SUNCC'] = CXX_V and CXX_V.find('Sun C++') >= 0 493main['ICC'] = CXX_V and CXX_V.find('Intel') >= 0 494if main['GCC'] + main['SUNCC'] + main['ICC'] > 1: 495 print 'Error: How can we have two at the same time?' 496 Exit(1) 497 498# Set up default C++ compiler flags 499if main['GCC']: 500 main.Append(CCFLAGS=['-pipe']) 501 main.Append(CCFLAGS=['-fno-strict-aliasing']) 502 main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef']) 503 main.Append(CXXFLAGS=['-Wno-deprecated']) 504 # Read the GCC version to check for versions with bugs 505 # Note CCVERSION doesn't work here because it is run with the CC 506 # before we override it from the command line 507 gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 508 if not compareVersions(gcc_version, '4.4.1') or \ 509 not compareVersions(gcc_version, '4.4.2'): 510 print 'Info: Tree vectorizer in GCC 4.4.1 & 4.4.2 is buggy, disabling.' 511 main.Append(CCFLAGS=['-fno-tree-vectorize']) 512elif main['ICC']: 513 pass #Fix me... add warning flags once we clean up icc warnings 514elif main['SUNCC']: 515 main.Append(CCFLAGS=['-Qoption ccfe']) 516 main.Append(CCFLAGS=['-features=gcc']) 517 main.Append(CCFLAGS=['-features=extensions']) 518 main.Append(CCFLAGS=['-library=stlport4']) 519 main.Append(CCFLAGS=['-xar']) 520 #main.Append(CCFLAGS=['-instances=semiexplicit']) 521else: 522 print 'Error: Don\'t know what compiler options to use for your compiler.' 523 print ' Please fix SConstruct and src/SConscript and try again.' 524 Exit(1) 525 526# Set up common yacc/bison flags (needed for Ruby) 527main['YACCFLAGS'] = '-d' 528main['YACCHXXFILESUFFIX'] = '.hh' 529 530# Do this after we save setting back, or else we'll tack on an 531# extra 'qdo' every time we run scons. 532if main['BATCH']: 533 main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 534 main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 535 main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 536 main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 537 main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 538 539if sys.platform == 'cygwin': 540 # cygwin has some header file issues... 541 main.Append(CCFLAGS=["-Wno-uninitialized"]) 542 543# Check for SWIG 544if not main.has_key('SWIG'): 545 print 'Error: SWIG utility not found.' 546 print ' Please install (see http://www.swig.org) and retry.' 547 Exit(1) 548 549# Check for appropriate SWIG version 550swig_version = readCommand(('swig', '-version'), exception='').split() 551# First 3 words should be "SWIG Version x.y.z" 552if len(swig_version) < 3 or \ 553 swig_version[0] != 'SWIG' or swig_version[1] != 'Version': 554 print 'Error determining SWIG version.' 555 Exit(1) 556 557min_swig_version = '1.3.28' 558if compareVersions(swig_version[2], min_swig_version) < 0: 559 print 'Error: SWIG version', min_swig_version, 'or newer required.' 560 print ' Installed version:', swig_version[2] 561 Exit(1) 562 563# Set up SWIG flags & scanner 564swig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS') 565main.Append(SWIGFLAGS=swig_flags) 566 567# filter out all existing swig scanners, they mess up the dependency 568# stuff for some reason 569scanners = [] 570for scanner in main['SCANNERS']: 571 skeys = scanner.skeys 572 if skeys == '.i': 573 continue 574 575 if isinstance(skeys, (list, tuple)) and '.i' in skeys: 576 continue 577 578 scanners.append(scanner) 579 580# add the new swig scanner that we like better 581from SCons.Scanner import ClassicCPP as CPPScanner 582swig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")' 583scanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re)) 584 585# replace the scanners list that has what we want 586main['SCANNERS'] = scanners 587 588# Add a custom Check function to the Configure context so that we can 589# figure out if the compiler adds leading underscores to global 590# variables. This is needed for the autogenerated asm files that we 591# use for embedding the python code. 592def CheckLeading(context): 593 context.Message("Checking for leading underscore in global variables...") 594 # 1) Define a global variable called x from asm so the C compiler 595 # won't change the symbol at all. 596 # 2) Declare that variable. 597 # 3) Use the variable 598 # 599 # If the compiler prepends an underscore, this will successfully 600 # link because the external symbol 'x' will be called '_x' which 601 # was defined by the asm statement. If the compiler does not 602 # prepend an underscore, this will not successfully link because 603 # '_x' will have been defined by assembly, while the C portion of 604 # the code will be trying to use 'x' 605 ret = context.TryLink(''' 606 asm(".globl _x; _x: .byte 0"); 607 extern int x; 608 int main() { return x; } 609 ''', extension=".c") 610 context.env.Append(LEADING_UNDERSCORE=ret) 611 context.Result(ret) 612 return ret 613 614# Platform-specific configuration. Note again that we assume that all 615# builds under a given build root run on the same host platform. 616conf = Configure(main, 617 conf_dir = joinpath(build_root, '.scons_config'), 618 log_file = joinpath(build_root, 'scons_config.log'), 619 custom_tests = { 'CheckLeading' : CheckLeading }) 620 621# Check for leading underscores. Don't really need to worry either 622# way so don't need to check the return code. 623conf.CheckLeading() 624 625# Check if we should compile a 64 bit binary on Mac OS X/Darwin 626try: 627 import platform 628 uname = platform.uname() 629 if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0: 630 if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]): 631 main.Append(CCFLAGS=['-arch', 'x86_64']) 632 main.Append(CFLAGS=['-arch', 'x86_64']) 633 main.Append(LINKFLAGS=['-arch', 'x86_64']) 634 main.Append(ASFLAGS=['-arch', 'x86_64']) 635except: 636 pass 637 638# Recent versions of scons substitute a "Null" object for Configure() 639# when configuration isn't necessary, e.g., if the "--help" option is 640# present. Unfortuantely this Null object always returns false, 641# breaking all our configuration checks. We replace it with our own 642# more optimistic null object that returns True instead. 643if not conf: 644 def NullCheck(*args, **kwargs): 645 return True 646 647 class NullConf: 648 def __init__(self, env): 649 self.env = env 650 def Finish(self): 651 return self.env 652 def __getattr__(self, mname): 653 return NullCheck 654 655 conf = NullConf(main) 656 657# Find Python include and library directories for embedding the 658# interpreter. For consistency, we will use the same Python 659# installation used to run scons (and thus this script). If you want 660# to link in an alternate version, see above for instructions on how 661# to invoke scons with a different copy of the Python interpreter. 662from distutils import sysconfig 663 664py_getvar = sysconfig.get_config_var 665 666py_debug = getattr(sys, 'pydebug', False) 667py_version = 'python' + py_getvar('VERSION') + (py_debug and "_d" or "") 668 669py_general_include = sysconfig.get_python_inc() 670py_platform_include = sysconfig.get_python_inc(plat_specific=True) 671py_includes = [ py_general_include ] 672if py_platform_include != py_general_include: 673 py_includes.append(py_platform_include) 674 675py_lib_path = [ py_getvar('LIBDIR') ] 676# add the prefix/lib/pythonX.Y/config dir, but only if there is no 677# shared library in prefix/lib/. 678if not py_getvar('Py_ENABLE_SHARED'): 679 py_lib_path.append(py_getvar('LIBPL')) 680 681py_libs = [] 682for lib in py_getvar('LIBS').split() + py_getvar('SYSLIBS').split(): 683 assert lib.startswith('-l') 684 lib = lib[2:] 685 if lib not in py_libs: 686 py_libs.append(lib) 687py_libs.append(py_version) 688 689main.Append(CPPPATH=py_includes) 690main.Append(LIBPATH=py_lib_path) 691 692# Cache build files in the supplied directory. 693if main['M5_BUILD_CACHE']: 694 print 'Using build cache located at', main['M5_BUILD_CACHE'] 695 CacheDir(main['M5_BUILD_CACHE']) 696 697 698# verify that this stuff works 699if not conf.CheckHeader('Python.h', '<>'): 700 print "Error: can't find Python.h header in", py_includes 701 Exit(1) 702 703for lib in py_libs: 704 if not conf.CheckLib(lib): 705 print "Error: can't find library %s required by python" % lib 706 Exit(1) 707 708# On Solaris you need to use libsocket for socket ops 709if not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 710 if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 711 print "Can't find library with socket calls (e.g. accept())" 712 Exit(1) 713 714# Check for zlib. If the check passes, libz will be automatically 715# added to the LIBS environment variable. 716if not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 717 print 'Error: did not find needed zlib compression library '\ 718 'and/or zlib.h header file.' 719 print ' Please install zlib and try again.' 720 Exit(1) 721 722# Check for librt. 723have_posix_clock = \ 724 conf.CheckLibWithHeader(None, 'time.h', 'C', 725 'clock_nanosleep(0,0,NULL,NULL);') or \ 726 conf.CheckLibWithHeader('rt', 'time.h', 'C', 727 'clock_nanosleep(0,0,NULL,NULL);') 728 729if not have_posix_clock: 730 print "Can't find library for POSIX clocks." 731 732# Check for <fenv.h> (C99 FP environment control) 733have_fenv = conf.CheckHeader('fenv.h', '<>') 734if not have_fenv: 735 print "Warning: Header file <fenv.h> not found." 736 print " This host has no IEEE FP rounding mode control." 737 738###################################################################### 739# 740# Check for mysql. 741# 742mysql_config = WhereIs('mysql_config') 743have_mysql = bool(mysql_config) 744 745# Check MySQL version. 746if have_mysql: 747 mysql_version = readCommand(mysql_config + ' --version') 748 min_mysql_version = '4.1' 749 if compareVersions(mysql_version, min_mysql_version) < 0: 750 print 'Warning: MySQL', min_mysql_version, 'or newer required.' 751 print ' Version', mysql_version, 'detected.' 752 have_mysql = False 753 754# Set up mysql_config commands. 755if have_mysql: 756 mysql_config_include = mysql_config + ' --include' 757 if os.system(mysql_config_include + ' > /dev/null') != 0: 758 # older mysql_config versions don't support --include, use 759 # --cflags instead 760 mysql_config_include = mysql_config + ' --cflags | sed s/\\\'//g' 761 # This seems to work in all versions 762 mysql_config_libs = mysql_config + ' --libs' 763 764###################################################################### 765# 766# Finish the configuration 767# 768main = conf.Finish() 769 770###################################################################### 771# 772# Collect all non-global variables 773# 774 775# Define the universe of supported ISAs 776all_isa_list = [ ] 777Export('all_isa_list') 778 779class CpuModel(object): 780 '''The CpuModel class encapsulates everything the ISA parser needs to 781 know about a particular CPU model.''' 782 783 # Dict of available CPU model objects. Accessible as CpuModel.dict. 784 dict = {} 785 list = [] 786 defaults = [] 787 788 # Constructor. Automatically adds models to CpuModel.dict. 789 def __init__(self, name, filename, includes, strings, default=False): 790 self.name = name # name of model 791 self.filename = filename # filename for output exec code 792 self.includes = includes # include files needed in exec file 793 # The 'strings' dict holds all the per-CPU symbols we can 794 # substitute into templates etc. 795 self.strings = strings 796 797 # This cpu is enabled by default 798 self.default = default 799 800 # Add self to dict 801 if name in CpuModel.dict: 802 raise AttributeError, "CpuModel '%s' already registered" % name 803 CpuModel.dict[name] = self 804 CpuModel.list.append(name) 805 806Export('CpuModel') 807 808# Sticky variables get saved in the variables file so they persist from 809# one invocation to the next (unless overridden, in which case the new 810# value becomes sticky). 811sticky_vars = Variables(args=ARGUMENTS) 812Export('sticky_vars') 813 814# Sticky variables that should be exported 815export_vars = [] 816Export('export_vars') 817 818# Walk the tree and execute all SConsopts scripts that wil add to the 819# above variables 820for bdir in [ base_dir ] + extras_dir_list: 821 for root, dirs, files in os.walk(bdir): 822 if 'SConsopts' in files: 823 print "Reading", joinpath(root, 'SConsopts') 824 SConscript(joinpath(root, 'SConsopts')) 825 826all_isa_list.sort() 827 828sticky_vars.AddVariables( 829 EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 830 BoolVariable('FULL_SYSTEM', 'Full-system support', False), 831 ListVariable('CPU_MODELS', 'CPU models', 832 sorted(n for n,m in CpuModel.dict.iteritems() if m.default), 833 sorted(CpuModel.list)), 834 BoolVariable('NO_FAST_ALLOC', 'Disable fast object allocator', False), 835 BoolVariable('FAST_ALLOC_DEBUG', 'Enable fast object allocator debugging', 836 False), 837 BoolVariable('FAST_ALLOC_STATS', 'Enable fast object allocator statistics', 838 False), 839 BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 840 False), 841 BoolVariable('SS_COMPATIBLE_FP', 842 'Make floating-point results compatible with SimpleScalar', 843 False), 844 BoolVariable('USE_SSE2', 845 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 846 False), 847 BoolVariable('USE_MYSQL', 'Use MySQL for stats output', have_mysql), 848 BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), 849 BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 850 BoolVariable('USE_CHECKER', 'Use checker for detailed CPU models', False), 851 BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False), 852 BoolVariable('RUBY', 'Build with Ruby', False), 853 ) 854 855# These variables get exported to #defines in config/*.hh (see src/SConscript). 856export_vars += ['FULL_SYSTEM', 'USE_FENV', 'USE_MYSQL', 857 'NO_FAST_ALLOC', 'FAST_ALLOC_DEBUG', 'FAST_ALLOC_STATS', 858 'SS_COMPATIBLE_FP', 'USE_CHECKER', 'TARGET_ISA', 'CP_ANNOTATE', 859 'USE_POSIX_CLOCK' ] 860 861################################################### 862# 863# Define a SCons builder for configuration flag headers. 864# 865################################################### 866 867# This function generates a config header file that #defines the 868# variable symbol to the current variable setting (0 or 1). The source 869# operands are the name of the variable and a Value node containing the 870# value of the variable. 871def build_config_file(target, source, env): 872 (variable, value) = [s.get_contents() for s in source] 873 f = file(str(target[0]), 'w') 874 print >> f, '#define', variable, value 875 f.close() 876 return None 877 878# Generate the message to be printed when building the config file. 879def build_config_file_string(target, source, env): 880 (variable, value) = [s.get_contents() for s in source] 881 return "Defining %s as %s in %s." % (variable, value, target[0]) 882 883# Combine the two functions into a scons Action object. 884config_action = Action(build_config_file, build_config_file_string) 885 886# The emitter munges the source & target node lists to reflect what 887# we're really doing. 888def config_emitter(target, source, env): 889 # extract variable name from Builder arg 890 variable = str(target[0]) 891 # True target is config header file 892 target = joinpath('config', variable.lower() + '.hh') 893 val = env[variable] 894 if isinstance(val, bool): 895 # Force value to 0/1 896 val = int(val) 897 elif isinstance(val, str): 898 val = '"' + val + '"' 899 900 # Sources are variable name & value (packaged in SCons Value nodes) 901 return ([target], [Value(variable), Value(val)]) 902 903config_builder = Builder(emitter = config_emitter, action = config_action) 904 905main.Append(BUILDERS = { 'ConfigFile' : config_builder }) 906 907# libelf build is shared across all configs in the build root. 908main.SConscript('ext/libelf/SConscript', 909 variant_dir = joinpath(build_root, 'libelf')) 910 911# gzstream build is shared across all configs in the build root. 912main.SConscript('ext/gzstream/SConscript', 913 variant_dir = joinpath(build_root, 'gzstream')) 914 915################################################### 916# 917# This function is used to set up a directory with switching headers 918# 919################################################### 920 921main['ALL_ISA_LIST'] = all_isa_list 922def make_switching_dir(dname, switch_headers, env): 923 # Generate the header. target[0] is the full path of the output 924 # header to generate. 'source' is a dummy variable, since we get the 925 # list of ISAs from env['ALL_ISA_LIST']. 926 def gen_switch_hdr(target, source, env): 927 fname = str(target[0]) 928 f = open(fname, 'w') 929 isa = env['TARGET_ISA'].lower() 930 print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname)) 931 f.close() 932 933 # Build SCons Action object. 'varlist' specifies env vars that this 934 # action depends on; when env['ALL_ISA_LIST'] changes these actions 935 # should get re-executed. 936 switch_hdr_action = MakeAction(gen_switch_hdr, 937 Transform("GENERATE"), varlist=['ALL_ISA_LIST']) 938 939 # Instantiate actions for each header 940 for hdr in switch_headers: 941 env.Command(hdr, [], switch_hdr_action) 942Export('make_switching_dir') 943 944################################################### 945# 946# Define build environments for selected configurations. 947# 948################################################### 949 950for variant_path in variant_paths: 951 print "Building in", variant_path 952 953 # Make a copy of the build-root environment to use for this config. 954 env = main.Clone() 955 env['BUILDDIR'] = variant_path 956 957 # variant_dir is the tail component of build path, and is used to 958 # determine the build parameters (e.g., 'ALPHA_SE') 959 (build_root, variant_dir) = splitpath(variant_path) 960 961 # Set env variables according to the build directory config. 962 sticky_vars.files = [] 963 # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 964 # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 965 # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 966 current_vars_file = joinpath(build_root, 'variables', variant_dir) 967 if isfile(current_vars_file): 968 sticky_vars.files.append(current_vars_file) 969 print "Using saved variables file %s" % current_vars_file 970 else: 971 # Build dir-specific variables file doesn't exist. 972 973 # Make sure the directory is there so we can create it later 974 opt_dir = dirname(current_vars_file) 975 if not isdir(opt_dir): 976 mkdir(opt_dir) 977 978 # Get default build variables from source tree. Variables are 979 # normally determined by name of $VARIANT_DIR, but can be 980 # overriden by 'default=' arg on command line. 981 default = GetOption('default') 982 if not default: 983 default = variant_dir 984 default_vars_file = joinpath('build_opts', default) 985 if isfile(default_vars_file): 986 sticky_vars.files.append(default_vars_file) 987 print "Variables file %s not found,\n using defaults in %s" \ 988 % (current_vars_file, default_vars_file) 989 else: 990 print "Error: cannot find variables file %s or %s" \ 991 % (current_vars_file, default_vars_file) 992 Exit(1) 993 994 # Apply current variable settings to env 995 sticky_vars.Update(env) 996 997 help_texts["local_vars"] += \ 998 "Build variables for %s:\n" % variant_dir \ 999 + sticky_vars.GenerateHelpText(env) 1000 1001 # Process variable settings. 1002 1003 if not have_fenv and env['USE_FENV']: 1004 print "Warning: <fenv.h> not available; " \ 1005 "forcing USE_FENV to False in", variant_dir + "." 1006 env['USE_FENV'] = False 1007 1008 if not env['USE_FENV']: 1009 print "Warning: No IEEE FP rounding mode control in", variant_dir + "." 1010 print " FP results may deviate slightly from other platforms." 1011 1012 if env['EFENCE']: 1013 env.Append(LIBS=['efence']) 1014 1015 if env['USE_MYSQL']: 1016 if not have_mysql: 1017 print "Warning: MySQL not available; " \ 1018 "forcing USE_MYSQL to False in", variant_dir + "." 1019 env['USE_MYSQL'] = False 1020 else: 1021 print "Compiling in", variant_dir, "with MySQL support." 1022 env.ParseConfig(mysql_config_libs) 1023 env.ParseConfig(mysql_config_include) 1024 1025 # Save sticky variable settings back to current variables file 1026 sticky_vars.Save(current_vars_file, env) 1027 1028 if env['USE_SSE2']: 1029 env.Append(CCFLAGS=['-msse2']) 1030 1031 # The src/SConscript file sets up the build rules in 'env' according 1032 # to the configured variables. It returns a list of environments, 1033 # one for each variant build (debug, opt, etc.) 1034 envList = SConscript('src/SConscript', variant_dir = variant_path, 1035 exports = 'env') 1036 1037 # Set up the regression tests for each build. 1038 for e in envList: 1039 SConscript('tests/SConscript', 1040 variant_dir = joinpath(variant_path, 'tests', e.Label), 1041 exports = { 'env' : e }, duplicate = False) 1042 1043# base help text 1044Help(''' 1045Usage: scons [scons options] [build variables] [target(s)] 1046 1047Extra scons options: 1048%(options)s 1049 1050Global build variables: 1051%(global_vars)s 1052 1053%(local_vars)s 1054''' % help_texts)
| 250################################################### 251# 252# Figure out which configurations to set up based on the path(s) of 253# the target(s). 254# 255################################################### 256 257# Find default configuration & binary. 258Default(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA_SE/m5.debug')) 259 260# helper function: find last occurrence of element in list 261def rfind(l, elt, offs = -1): 262 for i in range(len(l)+offs, 0, -1): 263 if l[i] == elt: 264 return i 265 raise ValueError, "element not found" 266 267# Each target must have 'build' in the interior of the path; the 268# directory below this will determine the build parameters. For 269# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 270# recognize that ALPHA_SE specifies the configuration because it 271# follow 'build' in the bulid path. 272 273# Generate absolute paths to targets so we can see where the build dir is 274if COMMAND_LINE_TARGETS: 275 # Ask SCons which directory it was invoked from 276 launch_dir = GetLaunchDir() 277 # Make targets relative to invocation directory 278 abs_targets = [ normpath(joinpath(launch_dir, str(x))) for x in \ 279 COMMAND_LINE_TARGETS] 280else: 281 # Default targets are relative to root of tree 282 abs_targets = [ normpath(joinpath(main.root.abspath, str(x))) for x in \ 283 DEFAULT_TARGETS] 284 285 286# Generate a list of the unique build roots and configs that the 287# collected targets reference. 288variant_paths = [] 289build_root = None 290for t in abs_targets: 291 path_dirs = t.split('/') 292 try: 293 build_top = rfind(path_dirs, 'build', -2) 294 except: 295 print "Error: no non-leaf 'build' dir found on target path", t 296 Exit(1) 297 this_build_root = joinpath('/',*path_dirs[:build_top+1]) 298 if not build_root: 299 build_root = this_build_root 300 else: 301 if this_build_root != build_root: 302 print "Error: build targets not under same build root\n"\ 303 " %s\n %s" % (build_root, this_build_root) 304 Exit(1) 305 variant_path = joinpath('/',*path_dirs[:build_top+2]) 306 if variant_path not in variant_paths: 307 variant_paths.append(variant_path) 308 309# Make sure build_root exists (might not if this is the first build there) 310if not isdir(build_root): 311 mkdir(build_root) 312main['BUILDROOT'] = build_root 313 314Export('main') 315 316main.SConsignFile(joinpath(build_root, "sconsign")) 317 318# Default duplicate option is to use hard links, but this messes up 319# when you use emacs to edit a file in the target dir, as emacs moves 320# file to file~ then copies to file, breaking the link. Symbolic 321# (soft) links work better. 322main.SetOption('duplicate', 'soft-copy') 323 324# 325# Set up global sticky variables... these are common to an entire build 326# tree (not specific to a particular build like ALPHA_SE) 327# 328 329# Variable validators & converters for global sticky variables 330def PathListMakeAbsolute(val): 331 if not val: 332 return val 333 f = lambda p: abspath(expanduser(p)) 334 return ':'.join(map(f, val.split(':'))) 335 336def PathListAllExist(key, val, env): 337 if not val: 338 return 339 paths = val.split(':') 340 for path in paths: 341 if not isdir(path): 342 raise SCons.Errors.UserError("Path does not exist: '%s'" % path) 343 344global_vars_file = joinpath(build_root, 'variables.global') 345 346global_vars = Variables(global_vars_file, args=ARGUMENTS) 347 348global_vars.AddVariables( 349 ('CC', 'C compiler', environ.get('CC', main['CC'])), 350 ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), 351 ('BATCH', 'Use batch pool for build and tests', False), 352 ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 353 ('M5_BUILD_CACHE', 'Cache built objects in this directory', False), 354 ('EXTRAS', 'Add extra directories to the compilation', '', 355 PathListAllExist, PathListMakeAbsolute), 356 ) 357 358# Update main environment with values from ARGUMENTS & global_vars_file 359global_vars.Update(main) 360help_texts["global_vars"] += global_vars.GenerateHelpText(main) 361 362# Save sticky variable settings back to current variables file 363global_vars.Save(global_vars_file, main) 364 365# Parse EXTRAS variable to build list of all directories where we're 366# look for sources etc. This list is exported as base_dir_list. 367base_dir = main.srcdir.abspath 368if main['EXTRAS']: 369 extras_dir_list = main['EXTRAS'].split(':') 370else: 371 extras_dir_list = [] 372 373Export('base_dir') 374Export('extras_dir_list') 375 376# the ext directory should be on the #includes path 377main.Append(CPPPATH=[Dir('ext')]) 378 379def strip_build_path(path, env): 380 path = str(path) 381 variant_base = env['BUILDROOT'] + os.path.sep 382 if path.startswith(variant_base): 383 path = path[len(variant_base):] 384 elif path.startswith('build/'): 385 path = path[6:] 386 return path 387 388# Generate a string of the form: 389# common/path/prefix/src1, src2 -> tgt1, tgt2 390# to print while building. 391class Transform(object): 392 # all specific color settings should be here and nowhere else 393 tool_color = termcap.Normal 394 pfx_color = termcap.Yellow 395 srcs_color = termcap.Yellow + termcap.Bold 396 arrow_color = termcap.Blue + termcap.Bold 397 tgts_color = termcap.Yellow + termcap.Bold 398 399 def __init__(self, tool, max_sources=99): 400 self.format = self.tool_color + (" [%8s] " % tool) \ 401 + self.pfx_color + "%s" \ 402 + self.srcs_color + "%s" \ 403 + self.arrow_color + " -> " \ 404 + self.tgts_color + "%s" \ 405 + termcap.Normal 406 self.max_sources = max_sources 407 408 def __call__(self, target, source, env, for_signature=None): 409 # truncate source list according to max_sources param 410 source = source[0:self.max_sources] 411 def strip(f): 412 return strip_build_path(str(f), env) 413 if len(source) > 0: 414 srcs = map(strip, source) 415 else: 416 srcs = [''] 417 tgts = map(strip, target) 418 # surprisingly, os.path.commonprefix is a dumb char-by-char string 419 # operation that has nothing to do with paths. 420 com_pfx = os.path.commonprefix(srcs + tgts) 421 com_pfx_len = len(com_pfx) 422 if com_pfx: 423 # do some cleanup and sanity checking on common prefix 424 if com_pfx[-1] == ".": 425 # prefix matches all but file extension: ok 426 # back up one to change 'foo.cc -> o' to 'foo.cc -> .o' 427 com_pfx = com_pfx[0:-1] 428 elif com_pfx[-1] == "/": 429 # common prefix is directory path: OK 430 pass 431 else: 432 src0_len = len(srcs[0]) 433 tgt0_len = len(tgts[0]) 434 if src0_len == com_pfx_len: 435 # source is a substring of target, OK 436 pass 437 elif tgt0_len == com_pfx_len: 438 # target is a substring of source, need to back up to 439 # avoid empty string on RHS of arrow 440 sep_idx = com_pfx.rfind(".") 441 if sep_idx != -1: 442 com_pfx = com_pfx[0:sep_idx] 443 else: 444 com_pfx = '' 445 elif src0_len > com_pfx_len and srcs[0][com_pfx_len] == ".": 446 # still splitting at file extension: ok 447 pass 448 else: 449 # probably a fluke; ignore it 450 com_pfx = '' 451 # recalculate length in case com_pfx was modified 452 com_pfx_len = len(com_pfx) 453 def fmt(files): 454 f = map(lambda s: s[com_pfx_len:], files) 455 return ', '.join(f) 456 return self.format % (com_pfx, fmt(srcs), fmt(tgts)) 457 458Export('Transform') 459 460 461if GetOption('verbose'): 462 def MakeAction(action, string, *args, **kwargs): 463 return Action(action, *args, **kwargs) 464else: 465 MakeAction = Action 466 main['CCCOMSTR'] = Transform("CC") 467 main['CXXCOMSTR'] = Transform("CXX") 468 main['ASCOMSTR'] = Transform("AS") 469 main['SWIGCOMSTR'] = Transform("SWIG") 470 main['ARCOMSTR'] = Transform("AR", 0) 471 main['LINKCOMSTR'] = Transform("LINK", 0) 472 main['RANLIBCOMSTR'] = Transform("RANLIB", 0) 473 main['M4COMSTR'] = Transform("M4") 474 main['SHCCCOMSTR'] = Transform("SHCC") 475 main['SHCXXCOMSTR'] = Transform("SHCXX") 476Export('MakeAction') 477 478CXX_version = readCommand([main['CXX'],'--version'], exception=False) 479CXX_V = readCommand([main['CXX'],'-V'], exception=False) 480 481main['GCC'] = CXX_version and CXX_version.find('g++') >= 0 482main['SUNCC'] = CXX_V and CXX_V.find('Sun C++') >= 0 483main['ICC'] = CXX_V and CXX_V.find('Intel') >= 0 484if main['GCC'] + main['SUNCC'] + main['ICC'] > 1: 485 print 'Error: How can we have two at the same time?' 486 Exit(1) 487 488# Set up default C++ compiler flags 489if main['GCC']: 490 main.Append(CCFLAGS=['-pipe']) 491 main.Append(CCFLAGS=['-fno-strict-aliasing']) 492 main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef']) 493 main.Append(CXXFLAGS=['-Wno-deprecated']) 494 # Read the GCC version to check for versions with bugs 495 # Note CCVERSION doesn't work here because it is run with the CC 496 # before we override it from the command line 497 gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 498 if not compareVersions(gcc_version, '4.4.1') or \ 499 not compareVersions(gcc_version, '4.4.2'): 500 print 'Info: Tree vectorizer in GCC 4.4.1 & 4.4.2 is buggy, disabling.' 501 main.Append(CCFLAGS=['-fno-tree-vectorize']) 502elif main['ICC']: 503 pass #Fix me... add warning flags once we clean up icc warnings 504elif main['SUNCC']: 505 main.Append(CCFLAGS=['-Qoption ccfe']) 506 main.Append(CCFLAGS=['-features=gcc']) 507 main.Append(CCFLAGS=['-features=extensions']) 508 main.Append(CCFLAGS=['-library=stlport4']) 509 main.Append(CCFLAGS=['-xar']) 510 #main.Append(CCFLAGS=['-instances=semiexplicit']) 511else: 512 print 'Error: Don\'t know what compiler options to use for your compiler.' 513 print ' Please fix SConstruct and src/SConscript and try again.' 514 Exit(1) 515 516# Set up common yacc/bison flags (needed for Ruby) 517main['YACCFLAGS'] = '-d' 518main['YACCHXXFILESUFFIX'] = '.hh' 519 520# Do this after we save setting back, or else we'll tack on an 521# extra 'qdo' every time we run scons. 522if main['BATCH']: 523 main['CC'] = main['BATCH_CMD'] + ' ' + main['CC'] 524 main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX'] 525 main['AS'] = main['BATCH_CMD'] + ' ' + main['AS'] 526 main['AR'] = main['BATCH_CMD'] + ' ' + main['AR'] 527 main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] 528 529if sys.platform == 'cygwin': 530 # cygwin has some header file issues... 531 main.Append(CCFLAGS=["-Wno-uninitialized"]) 532 533# Check for SWIG 534if not main.has_key('SWIG'): 535 print 'Error: SWIG utility not found.' 536 print ' Please install (see http://www.swig.org) and retry.' 537 Exit(1) 538 539# Check for appropriate SWIG version 540swig_version = readCommand(('swig', '-version'), exception='').split() 541# First 3 words should be "SWIG Version x.y.z" 542if len(swig_version) < 3 or \ 543 swig_version[0] != 'SWIG' or swig_version[1] != 'Version': 544 print 'Error determining SWIG version.' 545 Exit(1) 546 547min_swig_version = '1.3.28' 548if compareVersions(swig_version[2], min_swig_version) < 0: 549 print 'Error: SWIG version', min_swig_version, 'or newer required.' 550 print ' Installed version:', swig_version[2] 551 Exit(1) 552 553# Set up SWIG flags & scanner 554swig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS') 555main.Append(SWIGFLAGS=swig_flags) 556 557# filter out all existing swig scanners, they mess up the dependency 558# stuff for some reason 559scanners = [] 560for scanner in main['SCANNERS']: 561 skeys = scanner.skeys 562 if skeys == '.i': 563 continue 564 565 if isinstance(skeys, (list, tuple)) and '.i' in skeys: 566 continue 567 568 scanners.append(scanner) 569 570# add the new swig scanner that we like better 571from SCons.Scanner import ClassicCPP as CPPScanner 572swig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")' 573scanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re)) 574 575# replace the scanners list that has what we want 576main['SCANNERS'] = scanners 577 578# Add a custom Check function to the Configure context so that we can 579# figure out if the compiler adds leading underscores to global 580# variables. This is needed for the autogenerated asm files that we 581# use for embedding the python code. 582def CheckLeading(context): 583 context.Message("Checking for leading underscore in global variables...") 584 # 1) Define a global variable called x from asm so the C compiler 585 # won't change the symbol at all. 586 # 2) Declare that variable. 587 # 3) Use the variable 588 # 589 # If the compiler prepends an underscore, this will successfully 590 # link because the external symbol 'x' will be called '_x' which 591 # was defined by the asm statement. If the compiler does not 592 # prepend an underscore, this will not successfully link because 593 # '_x' will have been defined by assembly, while the C portion of 594 # the code will be trying to use 'x' 595 ret = context.TryLink(''' 596 asm(".globl _x; _x: .byte 0"); 597 extern int x; 598 int main() { return x; } 599 ''', extension=".c") 600 context.env.Append(LEADING_UNDERSCORE=ret) 601 context.Result(ret) 602 return ret 603 604# Platform-specific configuration. Note again that we assume that all 605# builds under a given build root run on the same host platform. 606conf = Configure(main, 607 conf_dir = joinpath(build_root, '.scons_config'), 608 log_file = joinpath(build_root, 'scons_config.log'), 609 custom_tests = { 'CheckLeading' : CheckLeading }) 610 611# Check for leading underscores. Don't really need to worry either 612# way so don't need to check the return code. 613conf.CheckLeading() 614 615# Check if we should compile a 64 bit binary on Mac OS X/Darwin 616try: 617 import platform 618 uname = platform.uname() 619 if uname[0] == 'Darwin' and compareVersions(uname[2], '9.0.0') >= 0: 620 if int(readCommand('sysctl -n hw.cpu64bit_capable')[0]): 621 main.Append(CCFLAGS=['-arch', 'x86_64']) 622 main.Append(CFLAGS=['-arch', 'x86_64']) 623 main.Append(LINKFLAGS=['-arch', 'x86_64']) 624 main.Append(ASFLAGS=['-arch', 'x86_64']) 625except: 626 pass 627 628# Recent versions of scons substitute a "Null" object for Configure() 629# when configuration isn't necessary, e.g., if the "--help" option is 630# present. Unfortuantely this Null object always returns false, 631# breaking all our configuration checks. We replace it with our own 632# more optimistic null object that returns True instead. 633if not conf: 634 def NullCheck(*args, **kwargs): 635 return True 636 637 class NullConf: 638 def __init__(self, env): 639 self.env = env 640 def Finish(self): 641 return self.env 642 def __getattr__(self, mname): 643 return NullCheck 644 645 conf = NullConf(main) 646 647# Find Python include and library directories for embedding the 648# interpreter. For consistency, we will use the same Python 649# installation used to run scons (and thus this script). If you want 650# to link in an alternate version, see above for instructions on how 651# to invoke scons with a different copy of the Python interpreter. 652from distutils import sysconfig 653 654py_getvar = sysconfig.get_config_var 655 656py_debug = getattr(sys, 'pydebug', False) 657py_version = 'python' + py_getvar('VERSION') + (py_debug and "_d" or "") 658 659py_general_include = sysconfig.get_python_inc() 660py_platform_include = sysconfig.get_python_inc(plat_specific=True) 661py_includes = [ py_general_include ] 662if py_platform_include != py_general_include: 663 py_includes.append(py_platform_include) 664 665py_lib_path = [ py_getvar('LIBDIR') ] 666# add the prefix/lib/pythonX.Y/config dir, but only if there is no 667# shared library in prefix/lib/. 668if not py_getvar('Py_ENABLE_SHARED'): 669 py_lib_path.append(py_getvar('LIBPL')) 670 671py_libs = [] 672for lib in py_getvar('LIBS').split() + py_getvar('SYSLIBS').split(): 673 assert lib.startswith('-l') 674 lib = lib[2:] 675 if lib not in py_libs: 676 py_libs.append(lib) 677py_libs.append(py_version) 678 679main.Append(CPPPATH=py_includes) 680main.Append(LIBPATH=py_lib_path) 681 682# Cache build files in the supplied directory. 683if main['M5_BUILD_CACHE']: 684 print 'Using build cache located at', main['M5_BUILD_CACHE'] 685 CacheDir(main['M5_BUILD_CACHE']) 686 687 688# verify that this stuff works 689if not conf.CheckHeader('Python.h', '<>'): 690 print "Error: can't find Python.h header in", py_includes 691 Exit(1) 692 693for lib in py_libs: 694 if not conf.CheckLib(lib): 695 print "Error: can't find library %s required by python" % lib 696 Exit(1) 697 698# On Solaris you need to use libsocket for socket ops 699if not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 700 if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 701 print "Can't find library with socket calls (e.g. accept())" 702 Exit(1) 703 704# Check for zlib. If the check passes, libz will be automatically 705# added to the LIBS environment variable. 706if not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 707 print 'Error: did not find needed zlib compression library '\ 708 'and/or zlib.h header file.' 709 print ' Please install zlib and try again.' 710 Exit(1) 711 712# Check for librt. 713have_posix_clock = \ 714 conf.CheckLibWithHeader(None, 'time.h', 'C', 715 'clock_nanosleep(0,0,NULL,NULL);') or \ 716 conf.CheckLibWithHeader('rt', 'time.h', 'C', 717 'clock_nanosleep(0,0,NULL,NULL);') 718 719if not have_posix_clock: 720 print "Can't find library for POSIX clocks." 721 722# Check for <fenv.h> (C99 FP environment control) 723have_fenv = conf.CheckHeader('fenv.h', '<>') 724if not have_fenv: 725 print "Warning: Header file <fenv.h> not found." 726 print " This host has no IEEE FP rounding mode control." 727 728###################################################################### 729# 730# Check for mysql. 731# 732mysql_config = WhereIs('mysql_config') 733have_mysql = bool(mysql_config) 734 735# Check MySQL version. 736if have_mysql: 737 mysql_version = readCommand(mysql_config + ' --version') 738 min_mysql_version = '4.1' 739 if compareVersions(mysql_version, min_mysql_version) < 0: 740 print 'Warning: MySQL', min_mysql_version, 'or newer required.' 741 print ' Version', mysql_version, 'detected.' 742 have_mysql = False 743 744# Set up mysql_config commands. 745if have_mysql: 746 mysql_config_include = mysql_config + ' --include' 747 if os.system(mysql_config_include + ' > /dev/null') != 0: 748 # older mysql_config versions don't support --include, use 749 # --cflags instead 750 mysql_config_include = mysql_config + ' --cflags | sed s/\\\'//g' 751 # This seems to work in all versions 752 mysql_config_libs = mysql_config + ' --libs' 753 754###################################################################### 755# 756# Finish the configuration 757# 758main = conf.Finish() 759 760###################################################################### 761# 762# Collect all non-global variables 763# 764 765# Define the universe of supported ISAs 766all_isa_list = [ ] 767Export('all_isa_list') 768 769class CpuModel(object): 770 '''The CpuModel class encapsulates everything the ISA parser needs to 771 know about a particular CPU model.''' 772 773 # Dict of available CPU model objects. Accessible as CpuModel.dict. 774 dict = {} 775 list = [] 776 defaults = [] 777 778 # Constructor. Automatically adds models to CpuModel.dict. 779 def __init__(self, name, filename, includes, strings, default=False): 780 self.name = name # name of model 781 self.filename = filename # filename for output exec code 782 self.includes = includes # include files needed in exec file 783 # The 'strings' dict holds all the per-CPU symbols we can 784 # substitute into templates etc. 785 self.strings = strings 786 787 # This cpu is enabled by default 788 self.default = default 789 790 # Add self to dict 791 if name in CpuModel.dict: 792 raise AttributeError, "CpuModel '%s' already registered" % name 793 CpuModel.dict[name] = self 794 CpuModel.list.append(name) 795 796Export('CpuModel') 797 798# Sticky variables get saved in the variables file so they persist from 799# one invocation to the next (unless overridden, in which case the new 800# value becomes sticky). 801sticky_vars = Variables(args=ARGUMENTS) 802Export('sticky_vars') 803 804# Sticky variables that should be exported 805export_vars = [] 806Export('export_vars') 807 808# Walk the tree and execute all SConsopts scripts that wil add to the 809# above variables 810for bdir in [ base_dir ] + extras_dir_list: 811 for root, dirs, files in os.walk(bdir): 812 if 'SConsopts' in files: 813 print "Reading", joinpath(root, 'SConsopts') 814 SConscript(joinpath(root, 'SConsopts')) 815 816all_isa_list.sort() 817 818sticky_vars.AddVariables( 819 EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 820 BoolVariable('FULL_SYSTEM', 'Full-system support', False), 821 ListVariable('CPU_MODELS', 'CPU models', 822 sorted(n for n,m in CpuModel.dict.iteritems() if m.default), 823 sorted(CpuModel.list)), 824 BoolVariable('NO_FAST_ALLOC', 'Disable fast object allocator', False), 825 BoolVariable('FAST_ALLOC_DEBUG', 'Enable fast object allocator debugging', 826 False), 827 BoolVariable('FAST_ALLOC_STATS', 'Enable fast object allocator statistics', 828 False), 829 BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger', 830 False), 831 BoolVariable('SS_COMPATIBLE_FP', 832 'Make floating-point results compatible with SimpleScalar', 833 False), 834 BoolVariable('USE_SSE2', 835 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 836 False), 837 BoolVariable('USE_MYSQL', 'Use MySQL for stats output', have_mysql), 838 BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), 839 BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 840 BoolVariable('USE_CHECKER', 'Use checker for detailed CPU models', False), 841 BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False), 842 BoolVariable('RUBY', 'Build with Ruby', False), 843 ) 844 845# These variables get exported to #defines in config/*.hh (see src/SConscript). 846export_vars += ['FULL_SYSTEM', 'USE_FENV', 'USE_MYSQL', 847 'NO_FAST_ALLOC', 'FAST_ALLOC_DEBUG', 'FAST_ALLOC_STATS', 848 'SS_COMPATIBLE_FP', 'USE_CHECKER', 'TARGET_ISA', 'CP_ANNOTATE', 849 'USE_POSIX_CLOCK' ] 850 851################################################### 852# 853# Define a SCons builder for configuration flag headers. 854# 855################################################### 856 857# This function generates a config header file that #defines the 858# variable symbol to the current variable setting (0 or 1). The source 859# operands are the name of the variable and a Value node containing the 860# value of the variable. 861def build_config_file(target, source, env): 862 (variable, value) = [s.get_contents() for s in source] 863 f = file(str(target[0]), 'w') 864 print >> f, '#define', variable, value 865 f.close() 866 return None 867 868# Generate the message to be printed when building the config file. 869def build_config_file_string(target, source, env): 870 (variable, value) = [s.get_contents() for s in source] 871 return "Defining %s as %s in %s." % (variable, value, target[0]) 872 873# Combine the two functions into a scons Action object. 874config_action = Action(build_config_file, build_config_file_string) 875 876# The emitter munges the source & target node lists to reflect what 877# we're really doing. 878def config_emitter(target, source, env): 879 # extract variable name from Builder arg 880 variable = str(target[0]) 881 # True target is config header file 882 target = joinpath('config', variable.lower() + '.hh') 883 val = env[variable] 884 if isinstance(val, bool): 885 # Force value to 0/1 886 val = int(val) 887 elif isinstance(val, str): 888 val = '"' + val + '"' 889 890 # Sources are variable name & value (packaged in SCons Value nodes) 891 return ([target], [Value(variable), Value(val)]) 892 893config_builder = Builder(emitter = config_emitter, action = config_action) 894 895main.Append(BUILDERS = { 'ConfigFile' : config_builder }) 896 897# libelf build is shared across all configs in the build root. 898main.SConscript('ext/libelf/SConscript', 899 variant_dir = joinpath(build_root, 'libelf')) 900 901# gzstream build is shared across all configs in the build root. 902main.SConscript('ext/gzstream/SConscript', 903 variant_dir = joinpath(build_root, 'gzstream')) 904 905################################################### 906# 907# This function is used to set up a directory with switching headers 908# 909################################################### 910 911main['ALL_ISA_LIST'] = all_isa_list 912def make_switching_dir(dname, switch_headers, env): 913 # Generate the header. target[0] is the full path of the output 914 # header to generate. 'source' is a dummy variable, since we get the 915 # list of ISAs from env['ALL_ISA_LIST']. 916 def gen_switch_hdr(target, source, env): 917 fname = str(target[0]) 918 f = open(fname, 'w') 919 isa = env['TARGET_ISA'].lower() 920 print >>f, '#include "%s/%s/%s"' % (dname, isa, basename(fname)) 921 f.close() 922 923 # Build SCons Action object. 'varlist' specifies env vars that this 924 # action depends on; when env['ALL_ISA_LIST'] changes these actions 925 # should get re-executed. 926 switch_hdr_action = MakeAction(gen_switch_hdr, 927 Transform("GENERATE"), varlist=['ALL_ISA_LIST']) 928 929 # Instantiate actions for each header 930 for hdr in switch_headers: 931 env.Command(hdr, [], switch_hdr_action) 932Export('make_switching_dir') 933 934################################################### 935# 936# Define build environments for selected configurations. 937# 938################################################### 939 940for variant_path in variant_paths: 941 print "Building in", variant_path 942 943 # Make a copy of the build-root environment to use for this config. 944 env = main.Clone() 945 env['BUILDDIR'] = variant_path 946 947 # variant_dir is the tail component of build path, and is used to 948 # determine the build parameters (e.g., 'ALPHA_SE') 949 (build_root, variant_dir) = splitpath(variant_path) 950 951 # Set env variables according to the build directory config. 952 sticky_vars.files = [] 953 # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in 954 # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke 955 # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings. 956 current_vars_file = joinpath(build_root, 'variables', variant_dir) 957 if isfile(current_vars_file): 958 sticky_vars.files.append(current_vars_file) 959 print "Using saved variables file %s" % current_vars_file 960 else: 961 # Build dir-specific variables file doesn't exist. 962 963 # Make sure the directory is there so we can create it later 964 opt_dir = dirname(current_vars_file) 965 if not isdir(opt_dir): 966 mkdir(opt_dir) 967 968 # Get default build variables from source tree. Variables are 969 # normally determined by name of $VARIANT_DIR, but can be 970 # overriden by 'default=' arg on command line. 971 default = GetOption('default') 972 if not default: 973 default = variant_dir 974 default_vars_file = joinpath('build_opts', default) 975 if isfile(default_vars_file): 976 sticky_vars.files.append(default_vars_file) 977 print "Variables file %s not found,\n using defaults in %s" \ 978 % (current_vars_file, default_vars_file) 979 else: 980 print "Error: cannot find variables file %s or %s" \ 981 % (current_vars_file, default_vars_file) 982 Exit(1) 983 984 # Apply current variable settings to env 985 sticky_vars.Update(env) 986 987 help_texts["local_vars"] += \ 988 "Build variables for %s:\n" % variant_dir \ 989 + sticky_vars.GenerateHelpText(env) 990 991 # Process variable settings. 992 993 if not have_fenv and env['USE_FENV']: 994 print "Warning: <fenv.h> not available; " \ 995 "forcing USE_FENV to False in", variant_dir + "." 996 env['USE_FENV'] = False 997 998 if not env['USE_FENV']: 999 print "Warning: No IEEE FP rounding mode control in", variant_dir + "." 1000 print " FP results may deviate slightly from other platforms." 1001 1002 if env['EFENCE']: 1003 env.Append(LIBS=['efence']) 1004 1005 if env['USE_MYSQL']: 1006 if not have_mysql: 1007 print "Warning: MySQL not available; " \ 1008 "forcing USE_MYSQL to False in", variant_dir + "." 1009 env['USE_MYSQL'] = False 1010 else: 1011 print "Compiling in", variant_dir, "with MySQL support." 1012 env.ParseConfig(mysql_config_libs) 1013 env.ParseConfig(mysql_config_include) 1014 1015 # Save sticky variable settings back to current variables file 1016 sticky_vars.Save(current_vars_file, env) 1017 1018 if env['USE_SSE2']: 1019 env.Append(CCFLAGS=['-msse2']) 1020 1021 # The src/SConscript file sets up the build rules in 'env' according 1022 # to the configured variables. It returns a list of environments, 1023 # one for each variant build (debug, opt, etc.) 1024 envList = SConscript('src/SConscript', variant_dir = variant_path, 1025 exports = 'env') 1026 1027 # Set up the regression tests for each build. 1028 for e in envList: 1029 SConscript('tests/SConscript', 1030 variant_dir = joinpath(variant_path, 'tests', e.Label), 1031 exports = { 'env' : e }, duplicate = False) 1032 1033# base help text 1034Help(''' 1035Usage: scons [scons options] [build variables] [target(s)] 1036 1037Extra scons options: 1038%(options)s 1039 1040Global build variables: 1041%(global_vars)s 1042 1043%(local_vars)s 1044''' % help_texts)
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