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