SConstruct revision 4494
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 9# notice, this list of conditions and the following disclaimer; 10# redistributions in binary form must reproduce the above copyright 11# notice, this list of conditions and the following disclaimer in the 12# documentation and/or other materials provided with the distribution; 13# neither the name of the copyright holders nor the names of its 14# contributors may be used to endorse or promote products derived from 15# this software without specific prior written permission. 16# 17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 38# the optimized full-system version). 39# 40# You can build M5 in a different directory as long as there is a 41# 'build/<CONFIG>' somewhere along the target path. The build system 42# expects that all configs under the same build directory are being 43# built for the same host system. 44# 45# Examples: 46# 47# The following two commands are equivalent. The '-u' option tells 48# scons to search up the directory tree for this SConstruct file. 49# % cd <path-to-src>/m5 ; scons build/ALPHA_FS/m5.debug 50# % cd <path-to-src>/m5/build/ALPHA_FS; scons -u m5.debug 51# 52# The following two commands are equivalent and demonstrate building 53# in a directory outside of the source tree. The '-C' option tells 54# scons to chdir to the specified directory to find this SConstruct 55# file. 56# % cd <path-to-src>/m5 ; scons /local/foo/build/ALPHA_FS/m5.debug 57# % cd /local/foo/build/ALPHA_FS; scons -C <path-to-src>/m5 m5.debug 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 subprocess 69 70from os.path import join as joinpath 71 72# Check for recent-enough Python and SCons versions. If your system's 73# default installation of Python is not recent enough, you can use a 74# non-default installation of the Python interpreter by either (1) 75# rearranging your PATH so that scons finds the non-default 'python' 76# first or (2) explicitly invoking an alternative interpreter on the 77# scons script, e.g., "/usr/local/bin/python2.4 `which scons` [args]". 78EnsurePythonVersion(2,4) 79 80# Ironically, SCons 0.96 dies if you give EnsureSconsVersion a 81# 3-element version number. 82min_scons_version = (0,96,91) 83try: 84 EnsureSConsVersion(*min_scons_version) 85except: 86 print "Error checking current SCons version." 87 print "SCons", ".".join(map(str,min_scons_version)), "or greater required." 88 Exit(2) 89 90 91# The absolute path to the current directory (where this file lives). 92ROOT = Dir('.').abspath 93 94# Path to the M5 source tree. 95SRCDIR = joinpath(ROOT, 'src') 96 97# tell python where to find m5 python code 98sys.path.append(joinpath(ROOT, 'src/python')) 99 100################################################### 101# 102# Figure out which configurations to set up based on the path(s) of 103# the target(s). 104# 105################################################### 106 107# Find default configuration & binary. 108Default(os.environ.get('M5_DEFAULT_BINARY', 'build/ALPHA_SE/m5.debug')) 109 110# helper function: find last occurrence of element in list 111def rfind(l, elt, offs = -1): 112 for i in range(len(l)+offs, 0, -1): 113 if l[i] == elt: 114 return i 115 raise ValueError, "element not found" 116 117# helper function: compare dotted version numbers. 118# E.g., compare_version('1.3.25', '1.4.1') 119# returns -1, 0, 1 if v1 is <, ==, > v2 120def compare_versions(v1, v2): 121 # Convert dotted strings to lists 122 v1 = map(int, v1.split('.')) 123 v2 = map(int, v2.split('.')) 124 # Compare corresponding elements of lists 125 for n1,n2 in zip(v1, v2): 126 if n1 < n2: return -1 127 if n1 > n2: return 1 128 # all corresponding values are equal... see if one has extra values 129 if len(v1) < len(v2): return -1 130 if len(v1) > len(v2): return 1 131 return 0 132 133# Each target must have 'build' in the interior of the path; the 134# directory below this will determine the build parameters. For 135# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we 136# recognize that ALPHA_SE specifies the configuration because it 137# follow 'build' in the bulid path. 138 139# Generate absolute paths to targets so we can see where the build dir is 140if COMMAND_LINE_TARGETS: 141 # Ask SCons which directory it was invoked from 142 launch_dir = GetLaunchDir() 143 # Make targets relative to invocation directory 144 abs_targets = map(lambda x: os.path.normpath(joinpath(launch_dir, str(x))), 145 COMMAND_LINE_TARGETS) 146else: 147 # Default targets are relative to root of tree 148 abs_targets = map(lambda x: os.path.normpath(joinpath(ROOT, str(x))), 149 DEFAULT_TARGETS) 150 151 152# Generate a list of the unique build roots and configs that the 153# collected targets reference. 154build_paths = [] 155build_root = None 156for t in abs_targets: 157 path_dirs = t.split('/') 158 try: 159 build_top = rfind(path_dirs, 'build', -2) 160 except: 161 print "Error: no non-leaf 'build' dir found on target path", t 162 Exit(1) 163 this_build_root = joinpath('/',*path_dirs[:build_top+1]) 164 if not build_root: 165 build_root = this_build_root 166 else: 167 if this_build_root != build_root: 168 print "Error: build targets not under same build root\n"\ 169 " %s\n %s" % (build_root, this_build_root) 170 Exit(1) 171 build_path = joinpath('/',*path_dirs[:build_top+2]) 172 if build_path not in build_paths: 173 build_paths.append(build_path) 174 175################################################### 176# 177# Set up the default build environment. This environment is copied 178# and modified according to each selected configuration. 179# 180################################################### 181 182env = Environment(ENV = os.environ, # inherit user's environment vars 183 ROOT = ROOT, 184 SRCDIR = SRCDIR) 185 186#Parse CC/CXX early so that we use the correct compiler for 187# to test for dependencies/versions/libraries/includes 188if ARGUMENTS.get('CC', None): 189 env['CC'] = ARGUMENTS.get('CC') 190 191if ARGUMENTS.get('CXX', None): 192 env['CXX'] = ARGUMENTS.get('CXX') 193 194Export('env') 195 196env.SConsignFile(joinpath(build_root,"sconsign")) 197 198# Default duplicate option is to use hard links, but this messes up 199# when you use emacs to edit a file in the target dir, as emacs moves 200# file to file~ then copies to file, breaking the link. Symbolic 201# (soft) links work better. 202env.SetOption('duplicate', 'soft-copy') 203 204# I waffle on this setting... it does avoid a few painful but 205# unnecessary builds, but it also seems to make trivial builds take 206# noticeably longer. 207if False: 208 env.TargetSignatures('content') 209 210# M5_PLY is used by isa_parser.py to find the PLY package. 211env.Append(ENV = { 'M5_PLY' : Dir('ext/ply') }) 212env['GCC'] = False 213env['SUNCC'] = False 214env['ICC'] = False 215env['GCC'] = subprocess.Popen(env['CXX'] + ' --version', shell=True, 216 stdout=subprocess.PIPE, stderr=subprocess.STDOUT, 217 close_fds=True).communicate()[0].find('GCC') >= 0 218env['SUNCC'] = subprocess.Popen(env['CXX'] + ' -V', shell=True, 219 stdout=subprocess.PIPE, stderr=subprocess.STDOUT, 220 close_fds=True).communicate()[0].find('Sun C++') >= 0 221env['ICC'] = subprocess.Popen(env['CXX'] + ' -V', shell=True, 222 stdout=subprocess.PIPE, stderr=subprocess.STDOUT, 223 close_fds=True).communicate()[0].find('Intel') >= 0 224if env['GCC'] + env['SUNCC'] + env['ICC'] > 1: 225 print 'Error: How can we have two at the same time?' 226 Exit(1) 227 228 229# Set up default C++ compiler flags 230if env['GCC']: 231 env.Append(CCFLAGS='-pipe') 232 env.Append(CCFLAGS='-fno-strict-aliasing') 233 env.Append(CCFLAGS=Split('-Wall -Wno-sign-compare -Werror -Wundef')) 234elif env['ICC']: 235 pass #Fix me... add warning flags once we clean up icc warnings 236elif env['SUNCC']: 237 env.Append(CCFLAGS='-Qoption ccfe') 238 env.Append(CCFLAGS='-features=gcc') 239 env.Append(CCFLAGS='-features=extensions') 240 env.Append(CCFLAGS='-library=stlport4') 241 env.Append(CCFLAGS='-xar') 242# env.Append(CCFLAGS='-instances=semiexplicit') 243else: 244 print 'Error: Don\'t know what compiler options to use for your compiler.' 245 print ' Please fix SConstruct and src/SConscript and try again.' 246 Exit(1) 247 248if sys.platform == 'cygwin': 249 # cygwin has some header file issues... 250 env.Append(CCFLAGS=Split("-Wno-uninitialized")) 251env.Append(CPPPATH=[Dir('ext/dnet')]) 252 253# Check for SWIG 254if not env.has_key('SWIG'): 255 print 'Error: SWIG utility not found.' 256 print ' Please install (see http://www.swig.org) and retry.' 257 Exit(1) 258 259# Check for appropriate SWIG version 260swig_version = os.popen('swig -version').read().split() 261# First 3 words should be "SWIG Version x.y.z" 262if swig_version[0] != 'SWIG' or swig_version[1] != 'Version': 263 print 'Error determining SWIG version.' 264 Exit(1) 265 266min_swig_version = '1.3.28' 267if compare_versions(swig_version[2], min_swig_version) < 0: 268 print 'Error: SWIG version', min_swig_version, 'or newer required.' 269 print ' Installed version:', swig_version[2] 270 Exit(1) 271 272# Set up SWIG flags & scanner 273env.Append(SWIGFLAGS=Split('-c++ -python -modern $_CPPINCFLAGS')) 274 275import SCons.Scanner 276 277swig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")' 278 279swig_scanner = SCons.Scanner.ClassicCPP("SwigScan", ".i", "CPPPATH", 280 swig_inc_re) 281 282env.Append(SCANNERS = swig_scanner) 283 284# Platform-specific configuration. Note again that we assume that all 285# builds under a given build root run on the same host platform. 286conf = Configure(env, 287 conf_dir = joinpath(build_root, '.scons_config'), 288 log_file = joinpath(build_root, 'scons_config.log')) 289 290# Find Python include and library directories for embedding the 291# interpreter. For consistency, we will use the same Python 292# installation used to run scons (and thus this script). If you want 293# to link in an alternate version, see above for instructions on how 294# to invoke scons with a different copy of the Python interpreter. 295 296# Get brief Python version name (e.g., "python2.4") for locating 297# include & library files 298py_version_name = 'python' + sys.version[:3] 299 300# include path, e.g. /usr/local/include/python2.4 301py_header_path = joinpath(sys.exec_prefix, 'include', py_version_name) 302env.Append(CPPPATH = py_header_path) 303# verify that it works 304if not conf.CheckHeader('Python.h', '<>'): 305 print "Error: can't find Python.h header in", py_header_path 306 Exit(1) 307 308# add library path too if it's not in the default place 309py_lib_path = None 310if sys.exec_prefix != '/usr': 311 py_lib_path = joinpath(sys.exec_prefix, 'lib') 312elif sys.platform == 'cygwin': 313 # cygwin puts the .dll in /bin for some reason 314 py_lib_path = '/bin' 315if py_lib_path: 316 env.Append(LIBPATH = py_lib_path) 317 print 'Adding', py_lib_path, 'to LIBPATH for', py_version_name 318if not conf.CheckLib(py_version_name): 319 print "Error: can't find Python library", py_version_name 320 Exit(1) 321 322# On Solaris you need to use libsocket for socket ops 323if not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'): 324 if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'): 325 print "Can't find library with socket calls (e.g. accept())" 326 Exit(1) 327 328# Check for zlib. If the check passes, libz will be automatically 329# added to the LIBS environment variable. 330if not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'): 331 print 'Error: did not find needed zlib compression library '\ 332 'and/or zlib.h header file.' 333 print ' Please install zlib and try again.' 334 Exit(1) 335 336# Check for <fenv.h> (C99 FP environment control) 337have_fenv = conf.CheckHeader('fenv.h', '<>') 338if not have_fenv: 339 print "Warning: Header file <fenv.h> not found." 340 print " This host has no IEEE FP rounding mode control." 341 342# Check for mysql. 343mysql_config = WhereIs('mysql_config') 344have_mysql = mysql_config != None 345 346# Check MySQL version. 347if have_mysql: 348 mysql_version = os.popen(mysql_config + ' --version').read() 349 min_mysql_version = '4.1' 350 if compare_versions(mysql_version, min_mysql_version) < 0: 351 print 'Warning: MySQL', min_mysql_version, 'or newer required.' 352 print ' Version', mysql_version, 'detected.' 353 have_mysql = False 354 355# Set up mysql_config commands. 356if have_mysql: 357 mysql_config_include = mysql_config + ' --include' 358 if os.system(mysql_config_include + ' > /dev/null') != 0: 359 # older mysql_config versions don't support --include, use 360 # --cflags instead 361 mysql_config_include = mysql_config + ' --cflags | sed s/\\\'//g' 362 # This seems to work in all versions 363 mysql_config_libs = mysql_config + ' --libs' 364 365env = conf.Finish() 366 367# Define the universe of supported ISAs 368all_isa_list = [ ] 369Export('all_isa_list') 370 371# Define the universe of supported CPU models 372all_cpu_list = [ ] 373default_cpus = [ ] 374Export('all_cpu_list', 'default_cpus') 375 376# Sticky options get saved in the options file so they persist from 377# one invocation to the next (unless overridden, in which case the new 378# value becomes sticky). 379sticky_opts = Options(args=ARGUMENTS) 380Export('sticky_opts') 381 382# Non-sticky options only apply to the current build. 383nonsticky_opts = Options(args=ARGUMENTS) 384Export('nonsticky_opts') 385 386# Walk the tree and execute all SConsopts scripts that wil add to the 387# above options 388for root, dirs, files in os.walk('.'): 389 if 'SConsopts' in files: 390 SConscript(os.path.join(root, 'SConsopts')) 391 392all_isa_list.sort() 393all_cpu_list.sort() 394default_cpus.sort() 395 396sticky_opts.AddOptions( 397 EnumOption('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list), 398 BoolOption('FULL_SYSTEM', 'Full-system support', False), 399 # There's a bug in scons 0.96.1 that causes ListOptions with list 400 # values (more than one value) not to be able to be restored from 401 # a saved option file. If this causes trouble then upgrade to 402 # scons 0.96.90 or later. 403 ListOption('CPU_MODELS', 'CPU models', default_cpus, all_cpu_list), 404 BoolOption('NO_FAST_ALLOC', 'Disable fast object allocator', False), 405 BoolOption('EFENCE', 'Link with Electric Fence malloc debugger', 406 False), 407 BoolOption('SS_COMPATIBLE_FP', 408 'Make floating-point results compatible with SimpleScalar', 409 False), 410 BoolOption('USE_SSE2', 411 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts', 412 False), 413 BoolOption('USE_MYSQL', 'Use MySQL for stats output', have_mysql), 414 BoolOption('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), 415 BoolOption('USE_CHECKER', 'Use checker for detailed CPU models', False), 416 ('CC', 'C compiler', os.environ.get('CC', env['CC'])), 417 ('CXX', 'C++ compiler', os.environ.get('CXX', env['CXX'])), 418 BoolOption('BATCH', 'Use batch pool for build and tests', False), 419 ('BATCH_CMD', 'Batch pool submission command name', 'qdo'), 420 ('PYTHONHOME', 421 'Override the default PYTHONHOME for this system (use with caution)', 422 '%s:%s' % (sys.prefix, sys.exec_prefix)) 423 ) 424 425nonsticky_opts.AddOptions( 426 BoolOption('update_ref', 'Update test reference outputs', False) 427 ) 428 429# These options get exported to #defines in config/*.hh (see src/SConscript). 430env.ExportOptions = ['FULL_SYSTEM', 'ALPHA_TLASER', 'USE_FENV', \ 431 'USE_MYSQL', 'NO_FAST_ALLOC', 'SS_COMPATIBLE_FP', \ 432 'USE_CHECKER', 'PYTHONHOME', 'TARGET_ISA'] 433 434# Define a handy 'no-op' action 435def no_action(target, source, env): 436 return 0 437 438env.NoAction = Action(no_action, None) 439 440################################################### 441# 442# Define a SCons builder for configuration flag headers. 443# 444################################################### 445 446# This function generates a config header file that #defines the 447# option symbol to the current option setting (0 or 1). The source 448# operands are the name of the option and a Value node containing the 449# value of the option. 450def build_config_file(target, source, env): 451 (option, value) = [s.get_contents() for s in source] 452 f = file(str(target[0]), 'w') 453 print >> f, '#define', option, value 454 f.close() 455 return None 456 457# Generate the message to be printed when building the config file. 458def build_config_file_string(target, source, env): 459 (option, value) = [s.get_contents() for s in source] 460 return "Defining %s as %s in %s." % (option, value, target[0]) 461 462# Combine the two functions into a scons Action object. 463config_action = Action(build_config_file, build_config_file_string) 464 465# The emitter munges the source & target node lists to reflect what 466# we're really doing. 467def config_emitter(target, source, env): 468 # extract option name from Builder arg 469 option = str(target[0]) 470 # True target is config header file 471 target = joinpath('config', option.lower() + '.hh') 472 val = env[option] 473 if isinstance(val, bool): 474 # Force value to 0/1 475 val = int(val) 476 elif isinstance(val, str): 477 val = '"' + val + '"' 478 479 # Sources are option name & value (packaged in SCons Value nodes) 480 return ([target], [Value(option), Value(val)]) 481 482config_builder = Builder(emitter = config_emitter, action = config_action) 483 484env.Append(BUILDERS = { 'ConfigFile' : config_builder }) 485 486################################################### 487# 488# Define a SCons builder for copying files. This is used by the 489# Python zipfile code in src/python/SConscript, but is placed up here 490# since it's potentially more generally applicable. 491# 492################################################### 493 494copy_builder = Builder(action = Copy("$TARGET", "$SOURCE")) 495 496env.Append(BUILDERS = { 'CopyFile' : copy_builder }) 497 498################################################### 499# 500# Define a simple SCons builder to concatenate files. 501# 502# Used to append the Python zip archive to the executable. 503# 504################################################### 505 506concat_builder = Builder(action = Action(['cat $SOURCES > $TARGET', 507 'chmod +x $TARGET'])) 508 509env.Append(BUILDERS = { 'Concat' : concat_builder }) 510 511 512# base help text 513help_text = ''' 514Usage: scons [scons options] [build options] [target(s)] 515 516''' 517 518# libelf build is shared across all configs in the build root. 519env.SConscript('ext/libelf/SConscript', 520 build_dir = joinpath(build_root, 'libelf'), 521 exports = 'env') 522 523################################################### 524# 525# This function is used to set up a directory with switching headers 526# 527################################################### 528 529env['ALL_ISA_LIST'] = all_isa_list 530def make_switching_dir(dirname, switch_headers, env): 531 # Generate the header. target[0] is the full path of the output 532 # header to generate. 'source' is a dummy variable, since we get the 533 # list of ISAs from env['ALL_ISA_LIST']. 534 def gen_switch_hdr(target, source, env): 535 fname = str(target[0]) 536 basename = os.path.basename(fname) 537 f = open(fname, 'w') 538 f.write('#include "arch/isa_specific.hh"\n') 539 cond = '#if' 540 for isa in all_isa_list: 541 f.write('%s THE_ISA == %s_ISA\n#include "%s/%s/%s"\n' 542 % (cond, isa.upper(), dirname, isa, basename)) 543 cond = '#elif' 544 f.write('#else\n#error "THE_ISA not set"\n#endif\n') 545 f.close() 546 return 0 547 548 # String to print when generating header 549 def gen_switch_hdr_string(target, source, env): 550 return "Generating switch header " + str(target[0]) 551 552 # Build SCons Action object. 'varlist' specifies env vars that this 553 # action depends on; when env['ALL_ISA_LIST'] changes these actions 554 # should get re-executed. 555 switch_hdr_action = Action(gen_switch_hdr, gen_switch_hdr_string, 556 varlist=['ALL_ISA_LIST']) 557 558 # Instantiate actions for each header 559 for hdr in switch_headers: 560 env.Command(hdr, [], switch_hdr_action) 561Export('make_switching_dir') 562 563################################################### 564# 565# Define build environments for selected configurations. 566# 567################################################### 568 569# rename base env 570base_env = env 571 572for build_path in build_paths: 573 print "Building in", build_path 574 # build_dir is the tail component of build path, and is used to 575 # determine the build parameters (e.g., 'ALPHA_SE') 576 (build_root, build_dir) = os.path.split(build_path) 577 # Make a copy of the build-root environment to use for this config. 578 env = base_env.Copy() 579 580 # Set env options according to the build directory config. 581 sticky_opts.files = [] 582 # Options for $BUILD_ROOT/$BUILD_DIR are stored in 583 # $BUILD_ROOT/options/$BUILD_DIR so you can nuke 584 # $BUILD_ROOT/$BUILD_DIR without losing your options settings. 585 current_opts_file = joinpath(build_root, 'options', build_dir) 586 if os.path.isfile(current_opts_file): 587 sticky_opts.files.append(current_opts_file) 588 print "Using saved options file %s" % current_opts_file 589 else: 590 # Build dir-specific options file doesn't exist. 591 592 # Make sure the directory is there so we can create it later 593 opt_dir = os.path.dirname(current_opts_file) 594 if not os.path.isdir(opt_dir): 595 os.mkdir(opt_dir) 596 597 # Get default build options from source tree. Options are 598 # normally determined by name of $BUILD_DIR, but can be 599 # overriden by 'default=' arg on command line. 600 default_opts_file = joinpath('build_opts', 601 ARGUMENTS.get('default', build_dir)) 602 if os.path.isfile(default_opts_file): 603 sticky_opts.files.append(default_opts_file) 604 print "Options file %s not found,\n using defaults in %s" \ 605 % (current_opts_file, default_opts_file) 606 else: 607 print "Error: cannot find options file %s or %s" \ 608 % (current_opts_file, default_opts_file) 609 Exit(1) 610 611 # Apply current option settings to env 612 sticky_opts.Update(env) 613 nonsticky_opts.Update(env) 614 615 help_text += "Sticky options for %s:\n" % build_dir \ 616 + sticky_opts.GenerateHelpText(env) \ 617 + "\nNon-sticky options for %s:\n" % build_dir \ 618 + nonsticky_opts.GenerateHelpText(env) 619 620 # Process option settings. 621 622 if not have_fenv and env['USE_FENV']: 623 print "Warning: <fenv.h> not available; " \ 624 "forcing USE_FENV to False in", build_dir + "." 625 env['USE_FENV'] = False 626 627 if not env['USE_FENV']: 628 print "Warning: No IEEE FP rounding mode control in", build_dir + "." 629 print " FP results may deviate slightly from other platforms." 630 631 if env['EFENCE']: 632 env.Append(LIBS=['efence']) 633 634 if env['USE_MYSQL']: 635 if not have_mysql: 636 print "Warning: MySQL not available; " \ 637 "forcing USE_MYSQL to False in", build_dir + "." 638 env['USE_MYSQL'] = False 639 else: 640 print "Compiling in", build_dir, "with MySQL support." 641 env.ParseConfig(mysql_config_libs) 642 env.ParseConfig(mysql_config_include) 643 644 # Save sticky option settings back to current options file 645 sticky_opts.Save(current_opts_file, env) 646 647 # Do this after we save setting back, or else we'll tack on an 648 # extra 'qdo' every time we run scons. 649 if env['BATCH']: 650 env['CC'] = env['BATCH_CMD'] + ' ' + env['CC'] 651 env['CXX'] = env['BATCH_CMD'] + ' ' + env['CXX'] 652 653 if env['USE_SSE2']: 654 env.Append(CCFLAGS='-msse2') 655 656 # The src/SConscript file sets up the build rules in 'env' according 657 # to the configured options. It returns a list of environments, 658 # one for each variant build (debug, opt, etc.) 659 envList = SConscript('src/SConscript', build_dir = build_path, 660 exports = 'env') 661 662 # Set up the regression tests for each build. 663 for e in envList: 664 SConscript('tests/SConscript', 665 build_dir = joinpath(build_path, 'tests', e.Label), 666 exports = { 'env' : e }, duplicate = False) 667 668Help(help_text) 669 670 671################################################### 672# 673# Let SCons do its thing. At this point SCons will use the defined 674# build environments to build the requested targets. 675# 676################################################### 677 678