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###################################################
30#
31# SCons top-level build description (SConstruct) file.
32#
33# While in this directory ('m5'), just type 'scons' to build the default
34# configuration (see below), or type 'scons build/<CONFIG>/<binary>'
35# to build some other configuration (e.g., 'build/ALPHA_FS/m5.opt' for
36# the optimized full-system version).
37#
38# You can build M5 in a different directory as long as there is a
39# 'build/<CONFIG>' somewhere along the target path. The build system
40# expdects that all configs under the same build directory are being
41# built for the same host system.
42#
43# Examples:
44# These two commands are equivalent. The '-u' option tells scons to
45# search up the directory tree for this SConstruct file.
46# % cd <path-to-src>/m5 ; scons build/ALPHA_FS/m5.debug
47# % cd <path-to-src>/m5/build/ALPHA_FS; scons -u m5.debug
48# These two commands are equivalent and demonstrate building in a
49# directory outside of the source tree. The '-C' option tells scons
50# to chdir to the specified directory to find this SConstruct file.
51# % cd <path-to-src>/m5 ; scons /local/foo/build/ALPHA_FS/m5.debug
52# % cd /local/foo/build/ALPHA_FS; scons -C <path-to-src>/m5 m5.debug
53#
54# You can use 'scons -H' to print scons options. If you're in this
55# 'm5' directory (or use -u or -C to tell scons where to find this
56# file), you can use 'scons -h' to print all the M5-specific build
57# options as well.
58#
59###################################################
60
61# Python library imports
62import sys
63import os
64
65# Check for recent-enough Python and SCons versions
66EnsurePythonVersion(2,3)
67EnsureSConsVersion(0,96,91)
68
69# The absolute path to the current directory (where this file lives).
70ROOT = Dir('.').abspath
71
72# Paths to the M5 and external source trees.
73SRCDIR = os.path.join(ROOT, 'src')
74
75# tell python where to find m5 python code
76sys.path.append(os.path.join(ROOT, 'src/python'))
77
78###################################################
79#
80# Figure out which configurations to set up based on the path(s) of
81# the target(s).
82#
83###################################################
84
85# Find default configuration & binary.
86Default(os.environ.get('M5_DEFAULT_BINARY', 'build/ALPHA_SE/m5.debug'))
87
88# Ask SCons which directory it was invoked from.
89launch_dir = GetLaunchDir()
90
91# Make targets relative to invocation directory
92abs_targets = map(lambda x: os.path.normpath(os.path.join(launch_dir, str(x))),
93 BUILD_TARGETS)
94
95# helper function: find last occurrence of element in list
96def rfind(l, elt, offs = -1):
97 for i in range(len(l)+offs, 0, -1):
98 if l[i] == elt:
99 return i
100 raise ValueError, "element not found"
101
102# Each target must have 'build' in the interior of the path; the
103# directory below this will determine the build parameters. For
104# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we
105# recognize that ALPHA_SE specifies the configuration because it
106# follow 'build' in the bulid path.
107
108# Generate a list of the unique build roots and configs that the
109# collected targets reference.
110build_paths = []
| 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###################################################
30#
31# SCons top-level build description (SConstruct) file.
32#
33# While in this directory ('m5'), just type 'scons' to build the default
34# configuration (see below), or type 'scons build/<CONFIG>/<binary>'
35# to build some other configuration (e.g., 'build/ALPHA_FS/m5.opt' for
36# the optimized full-system version).
37#
38# You can build M5 in a different directory as long as there is a
39# 'build/<CONFIG>' somewhere along the target path. The build system
40# expdects that all configs under the same build directory are being
41# built for the same host system.
42#
43# Examples:
44# These two commands are equivalent. The '-u' option tells scons to
45# search up the directory tree for this SConstruct file.
46# % cd <path-to-src>/m5 ; scons build/ALPHA_FS/m5.debug
47# % cd <path-to-src>/m5/build/ALPHA_FS; scons -u m5.debug
48# These two commands are equivalent and demonstrate building in a
49# directory outside of the source tree. The '-C' option tells scons
50# to chdir to the specified directory to find this SConstruct file.
51# % cd <path-to-src>/m5 ; scons /local/foo/build/ALPHA_FS/m5.debug
52# % cd /local/foo/build/ALPHA_FS; scons -C <path-to-src>/m5 m5.debug
53#
54# You can use 'scons -H' to print scons options. If you're in this
55# 'm5' directory (or use -u or -C to tell scons where to find this
56# file), you can use 'scons -h' to print all the M5-specific build
57# options as well.
58#
59###################################################
60
61# Python library imports
62import sys
63import os
64
65# Check for recent-enough Python and SCons versions
66EnsurePythonVersion(2,3)
67EnsureSConsVersion(0,96,91)
68
69# The absolute path to the current directory (where this file lives).
70ROOT = Dir('.').abspath
71
72# Paths to the M5 and external source trees.
73SRCDIR = os.path.join(ROOT, 'src')
74
75# tell python where to find m5 python code
76sys.path.append(os.path.join(ROOT, 'src/python'))
77
78###################################################
79#
80# Figure out which configurations to set up based on the path(s) of
81# the target(s).
82#
83###################################################
84
85# Find default configuration & binary.
86Default(os.environ.get('M5_DEFAULT_BINARY', 'build/ALPHA_SE/m5.debug'))
87
88# Ask SCons which directory it was invoked from.
89launch_dir = GetLaunchDir()
90
91# Make targets relative to invocation directory
92abs_targets = map(lambda x: os.path.normpath(os.path.join(launch_dir, str(x))),
93 BUILD_TARGETS)
94
95# helper function: find last occurrence of element in list
96def rfind(l, elt, offs = -1):
97 for i in range(len(l)+offs, 0, -1):
98 if l[i] == elt:
99 return i
100 raise ValueError, "element not found"
101
102# Each target must have 'build' in the interior of the path; the
103# directory below this will determine the build parameters. For
104# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we
105# recognize that ALPHA_SE specifies the configuration because it
106# follow 'build' in the bulid path.
107
108# Generate a list of the unique build roots and configs that the
109# collected targets reference.
110build_paths = []
|
111build_roots = []
| 111build_root = None
|
112for t in abs_targets:
113 path_dirs = t.split('/')
114 try:
115 build_top = rfind(path_dirs, 'build', -2)
116 except:
117 print "Error: no non-leaf 'build' dir found on target path", t
118 Exit(1)
| 112for t in abs_targets:
113 path_dirs = t.split('/')
114 try:
115 build_top = rfind(path_dirs, 'build', -2)
116 except:
117 print "Error: no non-leaf 'build' dir found on target path", t
118 Exit(1)
|
119 build_root = os.path.join('/',*path_dirs[:build_top+1])
120 if build_root not in build_roots:
121 build_roots.append(build_root)
| 119 this_build_root = os.path.join('/',*path_dirs[:build_top+1])
120 if not build_root:
121 build_root = this_build_root
122 else:
123 if this_build_root != build_root:
124 print "Error: build targets not under same build root\n"\
125 " %s\n %s" % (build_root, this_build_root)
126 Exit(1)
|
122 build_path = os.path.join('/',*path_dirs[:build_top+2])
123 if build_path not in build_paths:
124 build_paths.append(build_path)
125
126###################################################
127#
128# Set up the default build environment. This environment is copied
129# and modified according to each selected configuration.
130#
131###################################################
132
133env = Environment(ENV = os.environ, # inherit user's environment vars
134 ROOT = ROOT,
135 SRCDIR = SRCDIR)
136
137env.SConsignFile("sconsign")
138
139# I waffle on this setting... it does avoid a few painful but
140# unnecessary builds, but it also seems to make trivial builds take
141# noticeably longer.
142if False:
143 env.TargetSignatures('content')
144
145# M5_PLY is used by isa_parser.py to find the PLY package.
146env.Append(ENV = { 'M5_PLY' : Dir('ext/ply') })
147
148# Set up default C++ compiler flags
149env.Append(CCFLAGS='-pipe')
150env.Append(CCFLAGS='-fno-strict-aliasing')
151env.Append(CCFLAGS=Split('-Wall -Wno-sign-compare -Werror -Wundef'))
152if sys.platform == 'cygwin':
153 # cygwin has some header file issues...
154 env.Append(CCFLAGS=Split("-Wno-uninitialized"))
155env.Append(CPPPATH=[Dir('ext/dnet')])
156
157# Default libraries
158env.Append(LIBS=['z'])
159
| 127 build_path = os.path.join('/',*path_dirs[:build_top+2])
128 if build_path not in build_paths:
129 build_paths.append(build_path)
130
131###################################################
132#
133# Set up the default build environment. This environment is copied
134# and modified according to each selected configuration.
135#
136###################################################
137
138env = Environment(ENV = os.environ, # inherit user's environment vars
139 ROOT = ROOT,
140 SRCDIR = SRCDIR)
141
142env.SConsignFile("sconsign")
143
144# I waffle on this setting... it does avoid a few painful but
145# unnecessary builds, but it also seems to make trivial builds take
146# noticeably longer.
147if False:
148 env.TargetSignatures('content')
149
150# M5_PLY is used by isa_parser.py to find the PLY package.
151env.Append(ENV = { 'M5_PLY' : Dir('ext/ply') })
152
153# Set up default C++ compiler flags
154env.Append(CCFLAGS='-pipe')
155env.Append(CCFLAGS='-fno-strict-aliasing')
156env.Append(CCFLAGS=Split('-Wall -Wno-sign-compare -Werror -Wundef'))
157if sys.platform == 'cygwin':
158 # cygwin has some header file issues...
159 env.Append(CCFLAGS=Split("-Wno-uninitialized"))
160env.Append(CPPPATH=[Dir('ext/dnet')])
161
162# Default libraries
163env.Append(LIBS=['z'])
164
|
160# Platform-specific configuration
161conf = Configure(env)
| 165# Platform-specific configuration. Note again that we assume that all
166# builds under a given build root run on the same host platform.
167conf = Configure(env,
168 conf_dir = os.path.join(build_root, '.scons_config'),
169 log_file = os.path.join(build_root, 'scons_config.log'))
|
162
163# Check for <fenv.h> (C99 FP environment control)
164have_fenv = conf.CheckHeader('fenv.h', '<>')
165if not have_fenv:
166 print "Warning: Header file <fenv.h> not found."
167 print " This host has no IEEE FP rounding mode control."
168
169# Check for mysql.
170mysql_config = WhereIs('mysql_config')
171have_mysql = mysql_config != None
172
173# Check MySQL version.
174if have_mysql:
175 mysql_version = os.popen(mysql_config + ' --version').read()
176 mysql_version = mysql_version.split('.')
177 mysql_major = int(mysql_version[0])
178 mysql_minor = int(mysql_version[1])
179 # This version check is probably overly conservative, but it deals
180 # with the versions we have installed.
181 if mysql_major < 4 or (mysql_major == 4 and mysql_minor < 1):
182 print "Warning: MySQL v4.1 or newer required."
183 have_mysql = False
184
185# Set up mysql_config commands.
186if have_mysql:
187 mysql_config_include = mysql_config + ' --include'
188 if os.system(mysql_config_include + ' > /dev/null') != 0:
189 # older mysql_config versions don't support --include, use
190 # --cflags instead
191 mysql_config_include = mysql_config + ' --cflags | sed s/\\\'//g'
192 # This seems to work in all versions
193 mysql_config_libs = mysql_config + ' --libs'
194
195env = conf.Finish()
196
197# Define the universe of supported ISAs
198env['ALL_ISA_LIST'] = ['alpha', 'sparc', 'mips']
199
200# Define the universe of supported CPU models
201env['ALL_CPU_LIST'] = ['AtomicSimpleCPU', 'TimingSimpleCPU',
202 'FullCPU', 'AlphaFullCPU']
203
204# Sticky options get saved in the options file so they persist from
205# one invocation to the next (unless overridden, in which case the new
206# value becomes sticky).
207sticky_opts = Options(args=ARGUMENTS)
208sticky_opts.AddOptions(
209 EnumOption('TARGET_ISA', 'Target ISA', 'alpha', env['ALL_ISA_LIST']),
210 BoolOption('FULL_SYSTEM', 'Full-system support', False),
211 # There's a bug in scons 0.96.1 that causes ListOptions with list
212 # values (more than one value) not to be able to be restored from
213 # a saved option file. If this causes trouble then upgrade to
214 # scons 0.96.90 or later.
215 ListOption('CPU_MODELS', 'CPU models', 'AtomicSimpleCPU,TimingSimpleCPU',
216 env['ALL_CPU_LIST']),
217 BoolOption('ALPHA_TLASER',
218 'Model Alpha TurboLaser platform (vs. Tsunami)', False),
219 BoolOption('NO_FAST_ALLOC', 'Disable fast object allocator', False),
220 BoolOption('EFENCE', 'Link with Electric Fence malloc debugger',
221 False),
222 BoolOption('SS_COMPATIBLE_FP',
223 'Make floating-point results compatible with SimpleScalar',
224 False),
225 BoolOption('USE_SSE2',
226 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts',
227 False),
228 BoolOption('STATS_BINNING', 'Bin statistics by CPU mode', have_mysql),
229 BoolOption('USE_MYSQL', 'Use MySQL for stats output', have_mysql),
230 BoolOption('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv),
231 ('CC', 'C compiler', os.environ.get('CC', env['CC'])),
232 ('CXX', 'C++ compiler', os.environ.get('CXX', env['CXX'])),
233 BoolOption('BATCH', 'Use batch pool for build and tests', False),
234 ('BATCH_CMD', 'Batch pool submission command name', 'qdo')
235 )
236
237# Non-sticky options only apply to the current build.
238nonsticky_opts = Options(args=ARGUMENTS)
239nonsticky_opts.AddOptions(
240 BoolOption('update_ref', 'Update test reference outputs', False)
241 )
242
243# These options get exported to #defines in config/*.hh (see m5/SConscript).
244env.ExportOptions = ['FULL_SYSTEM', 'ALPHA_TLASER', 'USE_FENV', \
245 'USE_MYSQL', 'NO_FAST_ALLOC', 'SS_COMPATIBLE_FP', \
246 'STATS_BINNING']
247
248# Define a handy 'no-op' action
249def no_action(target, source, env):
250 return 0
251
252env.NoAction = Action(no_action, None)
253
254###################################################
255#
256# Define a SCons builder for configuration flag headers.
257#
258###################################################
259
260# This function generates a config header file that #defines the
261# option symbol to the current option setting (0 or 1). The source
262# operands are the name of the option and a Value node containing the
263# value of the option.
264def build_config_file(target, source, env):
265 (option, value) = [s.get_contents() for s in source]
266 f = file(str(target[0]), 'w')
267 print >> f, '#define', option, value
268 f.close()
269 return None
270
271# Generate the message to be printed when building the config file.
272def build_config_file_string(target, source, env):
273 (option, value) = [s.get_contents() for s in source]
274 return "Defining %s as %s in %s." % (option, value, target[0])
275
276# Combine the two functions into a scons Action object.
277config_action = Action(build_config_file, build_config_file_string)
278
279# The emitter munges the source & target node lists to reflect what
280# we're really doing.
281def config_emitter(target, source, env):
282 # extract option name from Builder arg
283 option = str(target[0])
284 # True target is config header file
285 target = os.path.join('config', option.lower() + '.hh')
286 # Force value to 0/1 even if it's a Python bool
287 val = int(eval(str(env[option])))
288 # Sources are option name & value (packaged in SCons Value nodes)
289 return ([target], [Value(option), Value(val)])
290
291config_builder = Builder(emitter = config_emitter, action = config_action)
292
293env.Append(BUILDERS = { 'ConfigFile' : config_builder })
294
295# base help text
296help_text = '''
297Usage: scons [scons options] [build options] [target(s)]
298
299'''
300
| 170
171# Check for <fenv.h> (C99 FP environment control)
172have_fenv = conf.CheckHeader('fenv.h', '<>')
173if not have_fenv:
174 print "Warning: Header file <fenv.h> not found."
175 print " This host has no IEEE FP rounding mode control."
176
177# Check for mysql.
178mysql_config = WhereIs('mysql_config')
179have_mysql = mysql_config != None
180
181# Check MySQL version.
182if have_mysql:
183 mysql_version = os.popen(mysql_config + ' --version').read()
184 mysql_version = mysql_version.split('.')
185 mysql_major = int(mysql_version[0])
186 mysql_minor = int(mysql_version[1])
187 # This version check is probably overly conservative, but it deals
188 # with the versions we have installed.
189 if mysql_major < 4 or (mysql_major == 4 and mysql_minor < 1):
190 print "Warning: MySQL v4.1 or newer required."
191 have_mysql = False
192
193# Set up mysql_config commands.
194if have_mysql:
195 mysql_config_include = mysql_config + ' --include'
196 if os.system(mysql_config_include + ' > /dev/null') != 0:
197 # older mysql_config versions don't support --include, use
198 # --cflags instead
199 mysql_config_include = mysql_config + ' --cflags | sed s/\\\'//g'
200 # This seems to work in all versions
201 mysql_config_libs = mysql_config + ' --libs'
202
203env = conf.Finish()
204
205# Define the universe of supported ISAs
206env['ALL_ISA_LIST'] = ['alpha', 'sparc', 'mips']
207
208# Define the universe of supported CPU models
209env['ALL_CPU_LIST'] = ['AtomicSimpleCPU', 'TimingSimpleCPU',
210 'FullCPU', 'AlphaFullCPU']
211
212# Sticky options get saved in the options file so they persist from
213# one invocation to the next (unless overridden, in which case the new
214# value becomes sticky).
215sticky_opts = Options(args=ARGUMENTS)
216sticky_opts.AddOptions(
217 EnumOption('TARGET_ISA', 'Target ISA', 'alpha', env['ALL_ISA_LIST']),
218 BoolOption('FULL_SYSTEM', 'Full-system support', False),
219 # There's a bug in scons 0.96.1 that causes ListOptions with list
220 # values (more than one value) not to be able to be restored from
221 # a saved option file. If this causes trouble then upgrade to
222 # scons 0.96.90 or later.
223 ListOption('CPU_MODELS', 'CPU models', 'AtomicSimpleCPU,TimingSimpleCPU',
224 env['ALL_CPU_LIST']),
225 BoolOption('ALPHA_TLASER',
226 'Model Alpha TurboLaser platform (vs. Tsunami)', False),
227 BoolOption('NO_FAST_ALLOC', 'Disable fast object allocator', False),
228 BoolOption('EFENCE', 'Link with Electric Fence malloc debugger',
229 False),
230 BoolOption('SS_COMPATIBLE_FP',
231 'Make floating-point results compatible with SimpleScalar',
232 False),
233 BoolOption('USE_SSE2',
234 'Compile for SSE2 (-msse2) to get IEEE FP on x86 hosts',
235 False),
236 BoolOption('STATS_BINNING', 'Bin statistics by CPU mode', have_mysql),
237 BoolOption('USE_MYSQL', 'Use MySQL for stats output', have_mysql),
238 BoolOption('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv),
239 ('CC', 'C compiler', os.environ.get('CC', env['CC'])),
240 ('CXX', 'C++ compiler', os.environ.get('CXX', env['CXX'])),
241 BoolOption('BATCH', 'Use batch pool for build and tests', False),
242 ('BATCH_CMD', 'Batch pool submission command name', 'qdo')
243 )
244
245# Non-sticky options only apply to the current build.
246nonsticky_opts = Options(args=ARGUMENTS)
247nonsticky_opts.AddOptions(
248 BoolOption('update_ref', 'Update test reference outputs', False)
249 )
250
251# These options get exported to #defines in config/*.hh (see m5/SConscript).
252env.ExportOptions = ['FULL_SYSTEM', 'ALPHA_TLASER', 'USE_FENV', \
253 'USE_MYSQL', 'NO_FAST_ALLOC', 'SS_COMPATIBLE_FP', \
254 'STATS_BINNING']
255
256# Define a handy 'no-op' action
257def no_action(target, source, env):
258 return 0
259
260env.NoAction = Action(no_action, None)
261
262###################################################
263#
264# Define a SCons builder for configuration flag headers.
265#
266###################################################
267
268# This function generates a config header file that #defines the
269# option symbol to the current option setting (0 or 1). The source
270# operands are the name of the option and a Value node containing the
271# value of the option.
272def build_config_file(target, source, env):
273 (option, value) = [s.get_contents() for s in source]
274 f = file(str(target[0]), 'w')
275 print >> f, '#define', option, value
276 f.close()
277 return None
278
279# Generate the message to be printed when building the config file.
280def build_config_file_string(target, source, env):
281 (option, value) = [s.get_contents() for s in source]
282 return "Defining %s as %s in %s." % (option, value, target[0])
283
284# Combine the two functions into a scons Action object.
285config_action = Action(build_config_file, build_config_file_string)
286
287# The emitter munges the source & target node lists to reflect what
288# we're really doing.
289def config_emitter(target, source, env):
290 # extract option name from Builder arg
291 option = str(target[0])
292 # True target is config header file
293 target = os.path.join('config', option.lower() + '.hh')
294 # Force value to 0/1 even if it's a Python bool
295 val = int(eval(str(env[option])))
296 # Sources are option name & value (packaged in SCons Value nodes)
297 return ([target], [Value(option), Value(val)])
298
299config_builder = Builder(emitter = config_emitter, action = config_action)
300
301env.Append(BUILDERS = { 'ConfigFile' : config_builder })
302
303# base help text
304help_text = '''
305Usage: scons [scons options] [build options] [target(s)]
306
307'''
308
|
| 309# libelf build is shared across all configs in the build root.
310env.SConscript('ext/libelf/SConscript',
311 build_dir = os.path.join(build_root, 'libelf'),
312 exports = 'env')
313
|
301###################################################
302#
303# Define build environments for selected configurations.
304#
305###################################################
306
307# rename base env
308base_env = env
309
| 314###################################################
315#
316# Define build environments for selected configurations.
317#
318###################################################
319
320# rename base env
321base_env = env
322
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310# Spme things (just libelf currently) are shared across all configs in
311# a "build root". Need to define how to build these just once for
312# each referenced root.
313build_root_env = {}
314for build_root in build_roots:
315 env = base_env.Copy()
316 env.SConscript('ext/libelf/SConscript',
317 build_dir = os.path.join(build_root, 'libelf'),
318 exports = 'env')
319 build_root_env[build_root] = env
320
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321for build_path in build_paths:
322 print "Building in", build_path
323 # build_dir is the tail component of build path, and is used to
324 # determine the build parameters (e.g., 'ALPHA_SE')
325 (build_root, build_dir) = os.path.split(build_path)
326 # Make a copy of the build-root environment to use for this config.
| 323for build_path in build_paths:
324 print "Building in", build_path
325 # build_dir is the tail component of build path, and is used to
326 # determine the build parameters (e.g., 'ALPHA_SE')
327 (build_root, build_dir) = os.path.split(build_path)
328 # Make a copy of the build-root environment to use for this config.
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327 env = build_root_env[build_root].Copy()
| 329 env = base_env.Copy()
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328
329 # Set env options according to the build directory config.
330 sticky_opts.files = []
331 # Options for $BUILD_ROOT/$BUILD_DIR are stored in
332 # $BUILD_ROOT/options/$BUILD_DIR so you can nuke
333 # $BUILD_ROOT/$BUILD_DIR without losing your options settings.
334 current_opts_file = os.path.join(build_root, 'options', build_dir)
335 if os.path.isfile(current_opts_file):
336 sticky_opts.files.append(current_opts_file)
337 print "Using saved options file %s" % current_opts_file
338 else:
339 # Build dir-specific options file doesn't exist.
340
341 # Make sure the directory is there so we can create it later
342 opt_dir = os.path.dirname(current_opts_file)
343 if not os.path.isdir(opt_dir):
344 os.mkdir(opt_dir)
345
346 # Get default build options from source tree. Options are
347 # normally determined by name of $BUILD_DIR, but can be
348 # overriden by 'default=' arg on command line.
349 default_opts_file = os.path.join('build_opts',
350 ARGUMENTS.get('default', build_dir))
351 if os.path.isfile(default_opts_file):
352 sticky_opts.files.append(default_opts_file)
353 print "Options file %s not found,\n using defaults in %s" \
354 % (current_opts_file, default_opts_file)
355 else:
356 print "Error: cannot find options file %s or %s" \
357 % (current_opts_file, default_opts_file)
358 Exit(1)
359
360 # Apply current option settings to env
361 sticky_opts.Update(env)
362 nonsticky_opts.Update(env)
363
364 help_text += "Sticky options for %s:\n" % build_dir \
365 + sticky_opts.GenerateHelpText(env) \
366 + "\nNon-sticky options for %s:\n" % build_dir \
367 + nonsticky_opts.GenerateHelpText(env)
368
369 # Process option settings.
370
371 if not have_fenv and env['USE_FENV']:
372 print "Warning: <fenv.h> not available; " \
373 "forcing USE_FENV to False in", build_dir + "."
374 env['USE_FENV'] = False
375
376 if not env['USE_FENV']:
377 print "Warning: No IEEE FP rounding mode control in", build_dir + "."
378 print " FP results may deviate slightly from other platforms."
379
380 if env['EFENCE']:
381 env.Append(LIBS=['efence'])
382
383 if env['USE_MYSQL']:
384 if not have_mysql:
385 print "Warning: MySQL not available; " \
386 "forcing USE_MYSQL to False in", build_dir + "."
387 env['USE_MYSQL'] = False
388 else:
389 print "Compiling in", build_dir, "with MySQL support."
390 env.ParseConfig(mysql_config_libs)
391 env.ParseConfig(mysql_config_include)
392
393 # Save sticky option settings back to current options file
394 sticky_opts.Save(current_opts_file, env)
395
396 # Do this after we save setting back, or else we'll tack on an
397 # extra 'qdo' every time we run scons.
398 if env['BATCH']:
399 env['CC'] = env['BATCH_CMD'] + ' ' + env['CC']
400 env['CXX'] = env['BATCH_CMD'] + ' ' + env['CXX']
401
402 if env['USE_SSE2']:
403 env.Append(CCFLAGS='-msse2')
404
405 # The m5/SConscript file sets up the build rules in 'env' according
406 # to the configured options. It returns a list of environments,
407 # one for each variant build (debug, opt, etc.)
408 envList = SConscript('src/SConscript', build_dir = build_path,
409 exports = 'env', duplicate = False)
410
411 # Set up the regression tests for each build.
412# for e in envList:
413# SConscript('m5-test/SConscript',
414# build_dir = os.path.join(build_dir, 'test', e.Label),
415# exports = { 'env' : e }, duplicate = False)
416
417Help(help_text)
418
419###################################################
420#
421# Let SCons do its thing. At this point SCons will use the defined
422# build environments to build the requested targets.
423#
424###################################################
425
| 330
331 # Set env options according to the build directory config.
332 sticky_opts.files = []
333 # Options for $BUILD_ROOT/$BUILD_DIR are stored in
334 # $BUILD_ROOT/options/$BUILD_DIR so you can nuke
335 # $BUILD_ROOT/$BUILD_DIR without losing your options settings.
336 current_opts_file = os.path.join(build_root, 'options', build_dir)
337 if os.path.isfile(current_opts_file):
338 sticky_opts.files.append(current_opts_file)
339 print "Using saved options file %s" % current_opts_file
340 else:
341 # Build dir-specific options file doesn't exist.
342
343 # Make sure the directory is there so we can create it later
344 opt_dir = os.path.dirname(current_opts_file)
345 if not os.path.isdir(opt_dir):
346 os.mkdir(opt_dir)
347
348 # Get default build options from source tree. Options are
349 # normally determined by name of $BUILD_DIR, but can be
350 # overriden by 'default=' arg on command line.
351 default_opts_file = os.path.join('build_opts',
352 ARGUMENTS.get('default', build_dir))
353 if os.path.isfile(default_opts_file):
354 sticky_opts.files.append(default_opts_file)
355 print "Options file %s not found,\n using defaults in %s" \
356 % (current_opts_file, default_opts_file)
357 else:
358 print "Error: cannot find options file %s or %s" \
359 % (current_opts_file, default_opts_file)
360 Exit(1)
361
362 # Apply current option settings to env
363 sticky_opts.Update(env)
364 nonsticky_opts.Update(env)
365
366 help_text += "Sticky options for %s:\n" % build_dir \
367 + sticky_opts.GenerateHelpText(env) \
368 + "\nNon-sticky options for %s:\n" % build_dir \
369 + nonsticky_opts.GenerateHelpText(env)
370
371 # Process option settings.
372
373 if not have_fenv and env['USE_FENV']:
374 print "Warning: <fenv.h> not available; " \
375 "forcing USE_FENV to False in", build_dir + "."
376 env['USE_FENV'] = False
377
378 if not env['USE_FENV']:
379 print "Warning: No IEEE FP rounding mode control in", build_dir + "."
380 print " FP results may deviate slightly from other platforms."
381
382 if env['EFENCE']:
383 env.Append(LIBS=['efence'])
384
385 if env['USE_MYSQL']:
386 if not have_mysql:
387 print "Warning: MySQL not available; " \
388 "forcing USE_MYSQL to False in", build_dir + "."
389 env['USE_MYSQL'] = False
390 else:
391 print "Compiling in", build_dir, "with MySQL support."
392 env.ParseConfig(mysql_config_libs)
393 env.ParseConfig(mysql_config_include)
394
395 # Save sticky option settings back to current options file
396 sticky_opts.Save(current_opts_file, env)
397
398 # Do this after we save setting back, or else we'll tack on an
399 # extra 'qdo' every time we run scons.
400 if env['BATCH']:
401 env['CC'] = env['BATCH_CMD'] + ' ' + env['CC']
402 env['CXX'] = env['BATCH_CMD'] + ' ' + env['CXX']
403
404 if env['USE_SSE2']:
405 env.Append(CCFLAGS='-msse2')
406
407 # The m5/SConscript file sets up the build rules in 'env' according
408 # to the configured options. It returns a list of environments,
409 # one for each variant build (debug, opt, etc.)
410 envList = SConscript('src/SConscript', build_dir = build_path,
411 exports = 'env', duplicate = False)
412
413 # Set up the regression tests for each build.
414# for e in envList:
415# SConscript('m5-test/SConscript',
416# build_dir = os.path.join(build_dir, 'test', e.Label),
417# exports = { 'env' : e }, duplicate = False)
418
419Help(help_text)
420
421###################################################
422#
423# Let SCons do its thing. At this point SCons will use the defined
424# build environments to build the requested targets.
425#
426###################################################
427
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