1# -*- mode:python -*-
2
3# Copyright (c) 2009 The Hewlett-Packard Development Company
4# Copyright (c) 2004-2005 The Regents of The University of Michigan
5# All rights reserved.
6#
7# Redistribution and use in source and binary forms, with or without
8# modification, are permitted provided that the following conditions are
9# met: redistributions of source code must retain the above copyright
10# notice, this list of conditions and the following disclaimer;
11# redistributions in binary form must reproduce the above copyright
12# notice, this list of conditions and the following disclaimer in the
13# documentation and/or other materials provided with the distribution;
14# neither the name of the copyright holders nor the names of its
15# contributors may be used to endorse or promote products derived from
16# this software without specific prior written permission.
17#
18# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29#
30# Authors: Steve Reinhardt
31# Nathan Binkert
32
33###################################################
34#
35# SCons top-level build description (SConstruct) file.
36#
37# While in this directory ('m5'), just type 'scons' to build the default
38# configuration (see below), or type 'scons build/<CONFIG>/<binary>'
39# to build some other configuration (e.g., 'build/ALPHA_FS/m5.opt' for
40# the optimized full-system version).
41#
42# You can build M5 in a different directory as long as there is a
43# 'build/<CONFIG>' somewhere along the target path. The build system
44# expects that all configs under the same build directory are being
45# built for the same host system.
46#
47# Examples:
48#
49# The following two commands are equivalent. The '-u' option tells
50# scons to search up the directory tree for this SConstruct file.
51# % cd <path-to-src>/m5 ; scons build/ALPHA_FS/m5.debug
52# % cd <path-to-src>/m5/build/ALPHA_FS; scons -u m5.debug
53#
54# The following two commands are equivalent and demonstrate building
55# in a directory outside of the source tree. The '-C' option tells
56# scons to chdir to the specified directory to find this SConstruct
57# file.
58# % cd <path-to-src>/m5 ; scons /local/foo/build/ALPHA_FS/m5.debug
59# % cd /local/foo/build/ALPHA_FS; scons -C <path-to-src>/m5 m5.debug
60#
61# You can use 'scons -H' to print scons options. If you're in this
62# 'm5' directory (or use -u or -C to tell scons where to find this
63# file), you can use 'scons -h' to print all the M5-specific build
64# options as well.
65#
66###################################################
67
68# Check for recent-enough Python and SCons versions.
69try:
70 # Really old versions of scons only take two options for the
71 # function, so check once without the revision and once with the
72 # revision, the first instance will fail for stuff other than
73 # 0.98, and the second will fail for 0.98.0
74 EnsureSConsVersion(0, 98)
75 EnsureSConsVersion(0, 98, 1)
76except SystemExit, e:
77 print """
78For more details, see:
79 http://m5sim.org/wiki/index.php/Compiling_M5
80"""
81 raise
82
83# We ensure the python version early because we have stuff that
84# requires python 2.4
85try:
86 EnsurePythonVersion(2, 4)
87except SystemExit, e:
88 print """
89You can use a non-default installation of the Python interpreter by
90either (1) rearranging your PATH so that scons finds the non-default
91'python' first or (2) explicitly invoking an alternative interpreter
92on the scons script.
93
94For more details, see:
95 http://m5sim.org/wiki/index.php/Using_a_non-default_Python_installation
96"""
97 raise
98
99import os
100import re
101import subprocess
102import sys
103
104from os import mkdir, environ
105from os.path import abspath, basename, dirname, expanduser, normpath
106from os.path import exists, isdir, isfile
107from os.path import join as joinpath, split as splitpath
108
109import SCons
110import SCons.Node
111
112def read_command(cmd, **kwargs):
113 """run the command cmd, read the results and return them
114 this is sorta like `cmd` in shell"""
115 from subprocess import Popen, PIPE, STDOUT
116
117 if isinstance(cmd, str):
118 cmd = cmd.split()
119
120 no_exception = 'exception' in kwargs
121 exception = kwargs.pop('exception', None)
122
123 kwargs.setdefault('shell', False)
124 kwargs.setdefault('stdout', PIPE)
125 kwargs.setdefault('stderr', STDOUT)
126 kwargs.setdefault('close_fds', True)
127 try:
128 subp = Popen(cmd, **kwargs)
129 except Exception, e:
130 if no_exception:
131 return exception
132 raise
133
134 return subp.communicate()[0]
135
136# helper function: compare arrays or strings of version numbers.
137# E.g., compare_version((1,3,25), (1,4,1)')
138# returns -1, 0, 1 if v1 is <, ==, > v2
139def compare_versions(v1, v2):
140 def make_version_list(v):
141 if isinstance(v, (list,tuple)):
142 return v
143 elif isinstance(v, str):
144 return map(lambda x: int(re.match('\d+', x).group()), v.split('.'))
145 else:
146 raise TypeError
147
148 v1 = make_version_list(v1)
149 v2 = make_version_list(v2)
150 # Compare corresponding elements of lists
151 for n1,n2 in zip(v1, v2):
152 if n1 < n2: return -1
153 if n1 > n2: return 1
154 # all corresponding values are equal... see if one has extra values
155 if len(v1) < len(v2): return -1
156 if len(v1) > len(v2): return 1
157 return 0
158
159########################################################################
160#
|
161# Set up the base build environment.
|
| 161# Set up the main build environment. |
162#
163########################################################################
164use_vars = set([ 'AS', 'AR', 'CC', 'CXX', 'HOME', 'LD_LIBRARY_PATH', 'PATH',
165 'RANLIB' ])
166
167use_env = {}
168for key,val in os.environ.iteritems():
169 if key in use_vars or key.startswith("M5"):
170 use_env[key] = val
171
|
172env = Environment(ENV=use_env)
173env.root = Dir(".") # The current directory (where this file lives).
174env.srcdir = Dir("src") # The source directory
|
172main = Environment(ENV=use_env)
173main.root = Dir(".") # The current directory (where this file lives).
174main.srcdir = Dir("src") # The source directory |
175
176########################################################################
177#
178# Mercurial Stuff.
179#
180# If the M5 directory is a mercurial repository, we should do some
181# extra things.
182#
183########################################################################
184
|
185hgdir = env.root.Dir(".hg")
|
| 185hgdir = main.root.Dir(".hg") |
186
187mercurial_style_message = """
188You're missing the M5 style hook.
189Please install the hook so we can ensure that all code fits a common style.
190
191All you'd need to do is add the following lines to your repository .hg/hgrc
192or your personal .hgrc
193----------------
194
195[extensions]
196style = %s/util/style.py
197
198[hooks]
199pretxncommit.style = python:style.check_whitespace
|
200""" % (env.root)
|
| 200""" % (main.root) |
201
202mercurial_bin_not_found = """
203Mercurial binary cannot be found, unfortunately this means that we
204cannot easily determine the version of M5 that you are running and
205this makes error messages more difficult to collect. Please consider
206installing mercurial if you choose to post an error message
207"""
208
209mercurial_lib_not_found = """
210Mercurial libraries cannot be found, ignoring style hook
211If you are actually a M5 developer, please fix this and
212run the style hook. It is important.
213"""
214
215hg_info = "Unknown"
216if hgdir.exists():
217 # 1) Grab repository revision if we know it.
218 cmd = "hg id -n -i -t -b"
219 try:
|
220 hg_info = read_command(cmd, cwd=env.root.abspath).strip()
|
| 220 hg_info = read_command(cmd, cwd=main.root.abspath).strip() |
221 except OSError:
222 print mercurial_bin_not_found
223
224 # 2) Ensure that the style hook is in place.
225 try:
226 ui = None
227 if ARGUMENTS.get('IGNORE_STYLE') != 'True':
228 from mercurial import ui
229 ui = ui.ui()
230 except ImportError:
231 print mercurial_lib_not_found
232
233 if ui is not None:
234 ui.readconfig(hgdir.File('hgrc').abspath)
235 style_hook = ui.config('hooks', 'pretxncommit.style', None)
236
237 if not style_hook:
238 print mercurial_style_message
239 sys.exit(1)
240else:
241 print ".hg directory not found"
|
242env['HG_INFO'] = hg_info
|
242
|
243main['HG_INFO'] = hg_info
244 |
245###################################################
246#
247# Figure out which configurations to set up based on the path(s) of
248# the target(s).
249#
250###################################################
251
252# Find default configuration & binary.
253Default(environ.get('M5_DEFAULT_BINARY', 'build/ALPHA_SE/m5.debug'))
254
255# helper function: find last occurrence of element in list
256def rfind(l, elt, offs = -1):
257 for i in range(len(l)+offs, 0, -1):
258 if l[i] == elt:
259 return i
260 raise ValueError, "element not found"
261
262# Each target must have 'build' in the interior of the path; the
263# directory below this will determine the build parameters. For
264# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we
265# recognize that ALPHA_SE specifies the configuration because it
266# follow 'build' in the bulid path.
267
268# Generate absolute paths to targets so we can see where the build dir is
269if COMMAND_LINE_TARGETS:
270 # Ask SCons which directory it was invoked from
271 launch_dir = GetLaunchDir()
272 # Make targets relative to invocation directory
273 abs_targets = [ normpath(joinpath(launch_dir, str(x))) for x in \
274 COMMAND_LINE_TARGETS]
275else:
276 # Default targets are relative to root of tree
|
276 abs_targets = [ normpath(joinpath(env.root.abspath, str(x))) for x in \
|
| 277 abs_targets = [ normpath(joinpath(main.root.abspath, str(x))) for x in \ |
278 DEFAULT_TARGETS]
279
280
281# Generate a list of the unique build roots and configs that the
282# collected targets reference.
283variant_paths = []
284build_root = None
285for t in abs_targets:
286 path_dirs = t.split('/')
287 try:
288 build_top = rfind(path_dirs, 'build', -2)
289 except:
290 print "Error: no non-leaf 'build' dir found on target path", t
291 Exit(1)
292 this_build_root = joinpath('/',*path_dirs[:build_top+1])
293 if not build_root:
294 build_root = this_build_root
295 else:
296 if this_build_root != build_root:
297 print "Error: build targets not under same build root\n"\
298 " %s\n %s" % (build_root, this_build_root)
299 Exit(1)
300 variant_path = joinpath('/',*path_dirs[:build_top+2])
301 if variant_path not in variant_paths:
302 variant_paths.append(variant_path)
303
304# Make sure build_root exists (might not if this is the first build there)
305if not isdir(build_root):
306 mkdir(build_root)
307
|
307Export('env')
|
| 308Export('main') |
309
|
309env.SConsignFile(joinpath(build_root, "sconsign"))
|
| 310main.SConsignFile(joinpath(build_root, "sconsign")) |
311
312# Default duplicate option is to use hard links, but this messes up
313# when you use emacs to edit a file in the target dir, as emacs moves
314# file to file~ then copies to file, breaking the link. Symbolic
315# (soft) links work better.
|
315env.SetOption('duplicate', 'soft-copy')
|
| 316main.SetOption('duplicate', 'soft-copy') |
317
318#
319# Set up global sticky variables... these are common to an entire build
320# tree (not specific to a particular build like ALPHA_SE)
321#
322
323# Variable validators & converters for global sticky variables
324def PathListMakeAbsolute(val):
325 if not val:
326 return val
327 f = lambda p: abspath(expanduser(p))
328 return ':'.join(map(f, val.split(':')))
329
330def PathListAllExist(key, val, env):
331 if not val:
332 return
333 paths = val.split(':')
334 for path in paths:
335 if not isdir(path):
336 raise SCons.Errors.UserError("Path does not exist: '%s'" % path)
337
338global_sticky_vars_file = joinpath(build_root, 'variables.global')
339
340global_sticky_vars = Variables(global_sticky_vars_file, args=ARGUMENTS)
341
342global_sticky_vars.AddVariables(
|
342 ('CC', 'C compiler', environ.get('CC', env['CC'])),
343 ('CXX', 'C++ compiler', environ.get('CXX', env['CXX'])),
|
343 ('CC', 'C compiler', environ.get('CC', main['CC'])),
344 ('CXX', 'C++ compiler', environ.get('CXX', main['CXX'])), |
345 ('BATCH', 'Use batch pool for build and tests', False),
346 ('BATCH_CMD', 'Batch pool submission command name', 'qdo'),
347 ('EXTRAS', 'Add Extra directories to the compilation', '',
348 PathListAllExist, PathListMakeAbsolute)
349 )
350
351# base help text
352help_text = '''
353Usage: scons [scons options] [build options] [target(s)]
354
355Global sticky options:
356'''
357
|
357help_text += global_sticky_vars.GenerateHelpText(env)
|
| 358help_text += global_sticky_vars.GenerateHelpText(main) |
359
|
359# Update env with values from ARGUMENTS & file global_sticky_vars_file
360global_sticky_vars.Update(env)
|
360# Update main environment with values from ARGUMENTS & global_sticky_vars_file
361global_sticky_vars.Update(main) |
362
363# Save sticky variable settings back to current variables file
|
363global_sticky_vars.Save(global_sticky_vars_file, env)
|
| 364global_sticky_vars.Save(global_sticky_vars_file, main) |
365
366# Parse EXTRAS variable to build list of all directories where we're
367# look for sources etc. This list is exported as base_dir_list.
|
367base_dir = env.srcdir.abspath
368if env['EXTRAS']:
369 extras_dir_list = env['EXTRAS'].split(':')
|
368base_dir = main.srcdir.abspath
369if main['EXTRAS']:
370 extras_dir_list = main['EXTRAS'].split(':') |
371else:
372 extras_dir_list = []
373
374Export('base_dir')
375Export('extras_dir_list')
376
377# the ext directory should be on the #includes path
|
377env.Append(CPPPATH=[Dir('ext')])
|
| 378main.Append(CPPPATH=[Dir('ext')]) |
379
380# M5_PLY is used by isa_parser.py to find the PLY package.
|
380env.Append(ENV = { 'M5_PLY' : Dir('ext/ply').abspath })
|
| 381main.Append(ENV = { 'M5_PLY' : Dir('ext/ply').abspath }) |
382
|
382CXX_version = read_command([env['CXX'],'--version'], exception=False)
383CXX_V = read_command([env['CXX'],'-V'], exception=False)
|
383CXX_version = read_command([main['CXX'],'--version'], exception=False)
384CXX_V = read_command([main['CXX'],'-V'], exception=False) |
385
|
385env['GCC'] = CXX_version and CXX_version.find('g++') >= 0
386env['SUNCC'] = CXX_V and CXX_V.find('Sun C++') >= 0
387env['ICC'] = CXX_V and CXX_V.find('Intel') >= 0
388if env['GCC'] + env['SUNCC'] + env['ICC'] > 1:
|
386main['GCC'] = CXX_version and CXX_version.find('g++') >= 0
387main['SUNCC'] = CXX_V and CXX_V.find('Sun C++') >= 0
388main['ICC'] = CXX_V and CXX_V.find('Intel') >= 0
389if main['GCC'] + main['SUNCC'] + main['ICC'] > 1: |
390 print 'Error: How can we have two at the same time?'
391 Exit(1)
392
393# Set up default C++ compiler flags
|
393if env['GCC']:
394 env.Append(CCFLAGS='-pipe')
395 env.Append(CCFLAGS='-fno-strict-aliasing')
396 env.Append(CCFLAGS=Split('-Wall -Wno-sign-compare -Werror -Wundef'))
397 env.Append(CXXFLAGS='-Wno-deprecated')
398elif env['ICC']:
|
394if main['GCC']:
395 main.Append(CCFLAGS='-pipe')
396 main.Append(CCFLAGS='-fno-strict-aliasing')
397 main.Append(CCFLAGS=Split('-Wall -Wno-sign-compare -Werror -Wundef'))
398 main.Append(CXXFLAGS='-Wno-deprecated')
399elif main['ICC']: |
400 pass #Fix me... add warning flags once we clean up icc warnings
|
400elif env['SUNCC']:
401 env.Append(CCFLAGS='-Qoption ccfe')
402 env.Append(CCFLAGS='-features=gcc')
403 env.Append(CCFLAGS='-features=extensions')
404 env.Append(CCFLAGS='-library=stlport4')
405 env.Append(CCFLAGS='-xar')
406 #env.Append(CCFLAGS='-instances=semiexplicit')
|
401elif main['SUNCC']:
402 main.Append(CCFLAGS='-Qoption ccfe')
403 main.Append(CCFLAGS='-features=gcc')
404 main.Append(CCFLAGS='-features=extensions')
405 main.Append(CCFLAGS='-library=stlport4')
406 main.Append(CCFLAGS='-xar')
407 #main.Append(CCFLAGS='-instances=semiexplicit') |
408else:
409 print 'Error: Don\'t know what compiler options to use for your compiler.'
410 print ' Please fix SConstruct and src/SConscript and try again.'
411 Exit(1)
412
413# Do this after we save setting back, or else we'll tack on an
414# extra 'qdo' every time we run scons.
|
414if env['BATCH']:
415 env['CC'] = env['BATCH_CMD'] + ' ' + env['CC']
416 env['CXX'] = env['BATCH_CMD'] + ' ' + env['CXX']
417 env['AS'] = env['BATCH_CMD'] + ' ' + env['AS']
418 env['AR'] = env['BATCH_CMD'] + ' ' + env['AR']
419 env['RANLIB'] = env['BATCH_CMD'] + ' ' + env['RANLIB']
|
415if main['BATCH']:
416 main['CC'] = main['BATCH_CMD'] + ' ' + main['CC']
417 main['CXX'] = main['BATCH_CMD'] + ' ' + main['CXX']
418 main['AS'] = main['BATCH_CMD'] + ' ' + main['AS']
419 main['AR'] = main['BATCH_CMD'] + ' ' + main['AR']
420 main['RANLIB'] = main['BATCH_CMD'] + ' ' + main['RANLIB'] |
421
422if sys.platform == 'cygwin':
423 # cygwin has some header file issues...
|
423 env.Append(CCFLAGS=Split("-Wno-uninitialized"))
|
| 424 main.Append(CCFLAGS=Split("-Wno-uninitialized")) |
425
426# Check for SWIG
|
426if not env.has_key('SWIG'):
|
| 427if not main.has_key('SWIG'): |
428 print 'Error: SWIG utility not found.'
429 print ' Please install (see http://www.swig.org) and retry.'
430 Exit(1)
431
432# Check for appropriate SWIG version
433swig_version = read_command(('swig', '-version'), exception='').split()
434# First 3 words should be "SWIG Version x.y.z"
435if len(swig_version) < 3 or \
436 swig_version[0] != 'SWIG' or swig_version[1] != 'Version':
437 print 'Error determining SWIG version.'
438 Exit(1)
439
440min_swig_version = '1.3.28'
441if compare_versions(swig_version[2], min_swig_version) < 0:
442 print 'Error: SWIG version', min_swig_version, 'or newer required.'
443 print ' Installed version:', swig_version[2]
444 Exit(1)
445
446# Set up SWIG flags & scanner
447swig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS')
|
447env.Append(SWIGFLAGS=swig_flags)
|
| 448main.Append(SWIGFLAGS=swig_flags) |
449
450# filter out all existing swig scanners, they mess up the dependency
451# stuff for some reason
452scanners = []
|
452for scanner in env['SCANNERS']:
|
| 453for scanner in main['SCANNERS']: |
454 skeys = scanner.skeys
455 if skeys == '.i':
456 continue
457
458 if isinstance(skeys, (list, tuple)) and '.i' in skeys:
459 continue
460
461 scanners.append(scanner)
462
463# add the new swig scanner that we like better
464from SCons.Scanner import ClassicCPP as CPPScanner
465swig_inc_re = '^[ \t]*[%,#][ \t]*(?:include|import)[ \t]*(<|")([^>"]+)(>|")'
466scanners.append(CPPScanner("SwigScan", [ ".i" ], "CPPPATH", swig_inc_re))
467
468# replace the scanners list that has what we want
|
468env['SCANNERS'] = scanners
|
| 469main['SCANNERS'] = scanners |
470
471# Add a custom Check function to the Configure context so that we can
472# figure out if the compiler adds leading underscores to global
473# variables. This is needed for the autogenerated asm files that we
474# use for embedding the python code.
475def CheckLeading(context):
476 context.Message("Checking for leading underscore in global variables...")
477 # 1) Define a global variable called x from asm so the C compiler
478 # won't change the symbol at all.
479 # 2) Declare that variable.
480 # 3) Use the variable
481 #
482 # If the compiler prepends an underscore, this will successfully
483 # link because the external symbol 'x' will be called '_x' which
484 # was defined by the asm statement. If the compiler does not
485 # prepend an underscore, this will not successfully link because
486 # '_x' will have been defined by assembly, while the C portion of
487 # the code will be trying to use 'x'
488 ret = context.TryLink('''
489 asm(".globl _x; _x: .byte 0");
490 extern int x;
491 int main() { return x; }
492 ''', extension=".c")
493 context.env.Append(LEADING_UNDERSCORE=ret)
494 context.Result(ret)
495 return ret
496
497# Platform-specific configuration. Note again that we assume that all
498# builds under a given build root run on the same host platform.
|
498conf = Configure(env,
|
| 499conf = Configure(main, |
500 conf_dir = joinpath(build_root, '.scons_config'),
501 log_file = joinpath(build_root, 'scons_config.log'),
502 custom_tests = { 'CheckLeading' : CheckLeading })
503
504# Check for leading underscores. Don't really need to worry either
505# way so don't need to check the return code.
506conf.CheckLeading()
507
508# Check if we should compile a 64 bit binary on Mac OS X/Darwin
509try:
510 import platform
511 uname = platform.uname()
512 if uname[0] == 'Darwin' and compare_versions(uname[2], '9.0.0') >= 0:
513 if int(read_command('sysctl -n hw.cpu64bit_capable')[0]):
|
513 env.Append(CCFLAGS='-arch x86_64')
514 env.Append(CFLAGS='-arch x86_64')
515 env.Append(LINKFLAGS='-arch x86_64')
516 env.Append(ASFLAGS='-arch x86_64')
|
514 main.Append(CCFLAGS='-arch x86_64')
515 main.Append(CFLAGS='-arch x86_64')
516 main.Append(LINKFLAGS='-arch x86_64')
517 main.Append(ASFLAGS='-arch x86_64') |
518except:
519 pass
520
521# Recent versions of scons substitute a "Null" object for Configure()
522# when configuration isn't necessary, e.g., if the "--help" option is
523# present. Unfortuantely this Null object always returns false,
524# breaking all our configuration checks. We replace it with our own
525# more optimistic null object that returns True instead.
526if not conf:
527 def NullCheck(*args, **kwargs):
528 return True
529
530 class NullConf:
531 def __init__(self, env):
532 self.env = env
533 def Finish(self):
534 return self.env
535 def __getattr__(self, mname):
536 return NullCheck
537
|
537 conf = NullConf(env)
|
| 538 conf = NullConf(main) |
539
540# Find Python include and library directories for embedding the
541# interpreter. For consistency, we will use the same Python
542# installation used to run scons (and thus this script). If you want
543# to link in an alternate version, see above for instructions on how
544# to invoke scons with a different copy of the Python interpreter.
545from distutils import sysconfig
546
547py_getvar = sysconfig.get_config_var
548
549py_version = 'python' + py_getvar('VERSION')
550
551py_general_include = sysconfig.get_python_inc()
552py_platform_include = sysconfig.get_python_inc(plat_specific=True)
553py_includes = [ py_general_include ]
554if py_platform_include != py_general_include:
555 py_includes.append(py_platform_include)
556
557py_lib_path = [ py_getvar('LIBDIR') ]
558# add the prefix/lib/pythonX.Y/config dir, but only if there is no
559# shared library in prefix/lib/.
560if not py_getvar('Py_ENABLE_SHARED'):
561 py_lib_path.append(py_getvar('LIBPL'))
562
563py_libs = []
564for lib in py_getvar('LIBS').split() + py_getvar('SYSLIBS').split():
565 assert lib.startswith('-l')
566 lib = lib[2:]
567 if lib not in py_libs:
568 py_libs.append(lib)
569py_libs.append(py_version)
570
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570env.Append(CPPPATH=py_includes)
571env.Append(LIBPATH=py_lib_path)
|
571main.Append(CPPPATH=py_includes)
572main.Append(LIBPATH=py_lib_path) |
573
574# verify that this stuff works
575if not conf.CheckHeader('Python.h', '<>'):
576 print "Error: can't find Python.h header in", py_includes
577 Exit(1)
578
579for lib in py_libs:
580 if not conf.CheckLib(lib):
581 print "Error: can't find library %s required by python" % lib
582 Exit(1)
583
584# On Solaris you need to use libsocket for socket ops
585if not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'):
586 if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'):
587 print "Can't find library with socket calls (e.g. accept())"
588 Exit(1)
589
590# Check for zlib. If the check passes, libz will be automatically
591# added to the LIBS environment variable.
592if not conf.CheckLibWithHeader('z', 'zlib.h', 'C++','zlibVersion();'):
593 print 'Error: did not find needed zlib compression library '\
594 'and/or zlib.h header file.'
595 print ' Please install zlib and try again.'
596 Exit(1)
597
598# Check for <fenv.h> (C99 FP environment control)
599have_fenv = conf.CheckHeader('fenv.h', '<>')
600if not have_fenv:
601 print "Warning: Header file <fenv.h> not found."
602 print " This host has no IEEE FP rounding mode control."
603
604######################################################################
605#
606# Check for mysql.
607#
608mysql_config = WhereIs('mysql_config')
609have_mysql = bool(mysql_config)
610
611# Check MySQL version.
612if have_mysql:
613 mysql_version = read_command(mysql_config + ' --version')
614 min_mysql_version = '4.1'
615 if compare_versions(mysql_version, min_mysql_version) < 0:
616 print 'Warning: MySQL', min_mysql_version, 'or newer required.'
617 print ' Version', mysql_version, 'detected.'
618 have_mysql = False
619
620# Set up mysql_config commands.
621if have_mysql:
622 mysql_config_include = mysql_config + ' --include'
623 if os.system(mysql_config_include + ' > /dev/null') != 0:
624 # older mysql_config versions don't support --include, use
625 # --cflags instead
626 mysql_config_include = mysql_config + ' --cflags | sed s/\\\'//g'
627 # This seems to work in all versions
628 mysql_config_libs = mysql_config + ' --libs'
629
630######################################################################
631#
632# Finish the configuration
633#
|
633env = conf.Finish()
|
| 634main = conf.Finish() |
635
636######################################################################
637#
638# Collect all non-global variables
639#
640
|
640Export('env')
641
|
641# Define the universe of supported ISAs
642all_isa_list = [ ]
643Export('all_isa_list')
644
645# Define the universe of supported CPU models
646all_cpu_list = [ ]
647default_cpus = [ ]
648Export('all_cpu_list', 'default_cpus')
649
650# Sticky variables get saved in the variables file so they persist from
651# one invocation to the next (unless overridden, in which case the new
652# value becomes sticky).
653sticky_vars = Variables(args=ARGUMENTS)
654Export('sticky_vars')
655
656# Sticky variables that should be exported
657export_vars = []
658Export('export_vars')
659
660# Non-sticky variables only apply to the current build.
661nonsticky_vars = Variables(args=ARGUMENTS)
662Export('nonsticky_vars')
663
664# Walk the tree and execute all SConsopts scripts that wil add to the
665# above variables
666for bdir in [ base_dir ] + extras_dir_list:
667 for root, dirs, files in os.walk(bdir):
668 if 'SConsopts' in files:
669 print "Reading", joinpath(root, 'SConsopts')
670 SConscript(joinpath(root, 'SConsopts'))
671
672all_isa_list.sort()
673all_cpu_list.sort()
674default_cpus.sort()
675
676sticky_vars.AddVariables(
677 EnumVariable('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list),
678 BoolVariable('FULL_SYSTEM', 'Full-system support', False),
679 ListVariable('CPU_MODELS', 'CPU models', default_cpus, all_cpu_list),
680 BoolVariable('NO_FAST_ALLOC', 'Disable fast object allocator', False),
681 BoolVariable('FAST_ALLOC_DEBUG', 'Enable fast object allocator debugging',
682 False),
683 BoolVariable('FAST_ALLOC_STATS', 'Enable fast object allocator statistics',
684 False),
685 BoolVariable('EFENCE', 'Link with Electric Fence malloc debugger',
686 False),
687 BoolVariable('SS_COMPATIBLE_FP',
688 'Make floating-point results compatible with SimpleScalar',
689 False),
690 BoolVariable('USE_SSE2',
691 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts',
692 False),
693 BoolVariable('USE_MYSQL', 'Use MySQL for stats output', have_mysql),
694 BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv),
695 BoolVariable('USE_CHECKER', 'Use checker for detailed CPU models', False),
696 BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False),
697 )
698
699nonsticky_vars.AddVariables(
700 BoolVariable('update_ref', 'Update test reference outputs', False)
701 )
702
703# These variables get exported to #defines in config/*.hh (see src/SConscript).
704export_vars += ['FULL_SYSTEM', 'USE_FENV', 'USE_MYSQL',
705 'NO_FAST_ALLOC', 'FAST_ALLOC_DEBUG', 'FAST_ALLOC_STATS',
706 'SS_COMPATIBLE_FP', 'USE_CHECKER', 'TARGET_ISA', 'CP_ANNOTATE']
707
708###################################################
709#
710# Define a SCons builder for configuration flag headers.
711#
712###################################################
713
714# This function generates a config header file that #defines the
715# variable symbol to the current variable setting (0 or 1). The source
716# operands are the name of the variable and a Value node containing the
717# value of the variable.
718def build_config_file(target, source, env):
719 (variable, value) = [s.get_contents() for s in source]
720 f = file(str(target[0]), 'w')
721 print >> f, '#define', variable, value
722 f.close()
723 return None
724
725# Generate the message to be printed when building the config file.
726def build_config_file_string(target, source, env):
727 (variable, value) = [s.get_contents() for s in source]
728 return "Defining %s as %s in %s." % (variable, value, target[0])
729
730# Combine the two functions into a scons Action object.
731config_action = Action(build_config_file, build_config_file_string)
732
733# The emitter munges the source & target node lists to reflect what
734# we're really doing.
735def config_emitter(target, source, env):
736 # extract variable name from Builder arg
737 variable = str(target[0])
738 # True target is config header file
739 target = joinpath('config', variable.lower() + '.hh')
740 val = env[variable]
741 if isinstance(val, bool):
742 # Force value to 0/1
743 val = int(val)
744 elif isinstance(val, str):
745 val = '"' + val + '"'
746
747 # Sources are variable name & value (packaged in SCons Value nodes)
748 return ([target], [Value(variable), Value(val)])
749
750config_builder = Builder(emitter = config_emitter, action = config_action)
751
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753env.Append(BUILDERS = { 'ConfigFile' : config_builder })
|
| 752main.Append(BUILDERS = { 'ConfigFile' : config_builder }) |
753
754# libelf build is shared across all configs in the build root.
|
756env.SConscript('ext/libelf/SConscript',
757 variant_dir = joinpath(build_root, 'libelf'))
|
755main.SConscript('ext/libelf/SConscript',
756 variant_dir = joinpath(build_root, 'libelf')) |
757
758# gzstream build is shared across all configs in the build root.
|
760env.SConscript('ext/gzstream/SConscript',
761 variant_dir = joinpath(build_root, 'gzstream'))
|
759main.SConscript('ext/gzstream/SConscript',
760 variant_dir = joinpath(build_root, 'gzstream')) |
761
762###################################################
763#
764# This function is used to set up a directory with switching headers
765#
766###################################################
767
|
769env['ALL_ISA_LIST'] = all_isa_list
|
| 768main['ALL_ISA_LIST'] = all_isa_list |
769def make_switching_dir(dname, switch_headers, env):
770 # Generate the header. target[0] is the full path of the output
771 # header to generate. 'source' is a dummy variable, since we get the
772 # list of ISAs from env['ALL_ISA_LIST'].
773 def gen_switch_hdr(target, source, env):
774 fname = str(target[0])
775 bname = basename(fname)
776 f = open(fname, 'w')
777 f.write('#include "arch/isa_specific.hh"\n')
778 cond = '#if'
779 for isa in all_isa_list:
780 f.write('%s THE_ISA == %s_ISA\n#include "%s/%s/%s"\n'
781 % (cond, isa.upper(), dname, isa, bname))
782 cond = '#elif'
783 f.write('#else\n#error "THE_ISA not set"\n#endif\n')
784 f.close()
785 return 0
786
787 # String to print when generating header
788 def gen_switch_hdr_string(target, source, env):
789 return "Generating switch header " + str(target[0])
790
791 # Build SCons Action object. 'varlist' specifies env vars that this
792 # action depends on; when env['ALL_ISA_LIST'] changes these actions
793 # should get re-executed.
794 switch_hdr_action = Action(gen_switch_hdr, gen_switch_hdr_string,
795 varlist=['ALL_ISA_LIST'])
796
797 # Instantiate actions for each header
798 for hdr in switch_headers:
799 env.Command(hdr, [], switch_hdr_action)
800Export('make_switching_dir')
801
802###################################################
803#
804# Define build environments for selected configurations.
805#
806###################################################
807
|
809# rename base env
810base_env = env
811
|
808for variant_path in variant_paths:
809 print "Building in", variant_path
810
811 # Make a copy of the build-root environment to use for this config.
|
816 env = base_env.Clone()
|
| 812 env = main.Clone() |
813 env['BUILDDIR'] = variant_path
814
815 # variant_dir is the tail component of build path, and is used to
816 # determine the build parameters (e.g., 'ALPHA_SE')
817 (build_root, variant_dir) = splitpath(variant_path)
818
819 # Set env variables according to the build directory config.
820 sticky_vars.files = []
821 # Variables for $BUILD_ROOT/$VARIANT_DIR are stored in
822 # $BUILD_ROOT/variables/$VARIANT_DIR so you can nuke
823 # $BUILD_ROOT/$VARIANT_DIR without losing your variables settings.
824 current_vars_file = joinpath(build_root, 'variables', variant_dir)
825 if isfile(current_vars_file):
826 sticky_vars.files.append(current_vars_file)
827 print "Using saved variables file %s" % current_vars_file
828 else:
829 # Build dir-specific variables file doesn't exist.
830
831 # Make sure the directory is there so we can create it later
832 opt_dir = dirname(current_vars_file)
833 if not isdir(opt_dir):
834 mkdir(opt_dir)
835
836 # Get default build variables from source tree. Variables are
837 # normally determined by name of $VARIANT_DIR, but can be
838 # overriden by 'default=' arg on command line.
839 default_vars_file = joinpath('build_opts',
840 ARGUMENTS.get('default', variant_dir))
841 if isfile(default_vars_file):
842 sticky_vars.files.append(default_vars_file)
843 print "Variables file %s not found,\n using defaults in %s" \
844 % (current_vars_file, default_vars_file)
845 else:
846 print "Error: cannot find variables file %s or %s" \
847 % (current_vars_file, default_vars_file)
848 Exit(1)
849
850 # Apply current variable settings to env
851 sticky_vars.Update(env)
852 nonsticky_vars.Update(env)
853
854 help_text += "\nSticky variables for %s:\n" % variant_dir \
855 + sticky_vars.GenerateHelpText(env) \
856 + "\nNon-sticky variables for %s:\n" % variant_dir \
857 + nonsticky_vars.GenerateHelpText(env)
858
859 # Process variable settings.
860
861 if not have_fenv and env['USE_FENV']:
862 print "Warning: <fenv.h> not available; " \
863 "forcing USE_FENV to False in", variant_dir + "."
864 env['USE_FENV'] = False
865
866 if not env['USE_FENV']:
867 print "Warning: No IEEE FP rounding mode control in", variant_dir + "."
868 print " FP results may deviate slightly from other platforms."
869
870 if env['EFENCE']:
871 env.Append(LIBS=['efence'])
872
873 if env['USE_MYSQL']:
874 if not have_mysql:
875 print "Warning: MySQL not available; " \
876 "forcing USE_MYSQL to False in", variant_dir + "."
877 env['USE_MYSQL'] = False
878 else:
879 print "Compiling in", variant_dir, "with MySQL support."
880 env.ParseConfig(mysql_config_libs)
881 env.ParseConfig(mysql_config_include)
882
883 # Save sticky variable settings back to current variables file
884 sticky_vars.Save(current_vars_file, env)
885
886 if env['USE_SSE2']:
887 env.Append(CCFLAGS='-msse2')
888
889 # The src/SConscript file sets up the build rules in 'env' according
890 # to the configured variables. It returns a list of environments,
891 # one for each variant build (debug, opt, etc.)
892 envList = SConscript('src/SConscript', variant_dir = variant_path,
893 exports = 'env')
894
895 # Set up the regression tests for each build.
896 for e in envList:
897 SConscript('tests/SConscript',
898 variant_dir = joinpath(variant_path, 'tests', e.Label),
899 exports = { 'env' : e }, duplicate = False)
900
901Help(help_text)
|