36
37import SCons
38
39# This file defines how to build a particular configuration of M5
40# based on variable settings in the 'env' build environment.
41
42Import('*')
43
44# Children need to see the environment
45Export('env')
46
47def sort_list(_list):
48 """return a sorted copy of '_list'"""
49 if isinstance(_list, list):
50 _list = _list[:]
51 else:
52 _list = list(_list)
53 _list.sort()
54 return _list
55
56class PySourceFile(object):
57 def __init__(self, package, source):
58 filename = str(source)
59 pyname = basename(filename)
60 assert pyname.endswith('.py')
61 name = pyname[:-3]
62 path = package.split('.')
63 modpath = path
64 if name != '__init__':
65 modpath += [name]
66 modpath = '.'.join(modpath)
67
68 arcpath = package.split('.') + [ pyname + 'c' ]
69 arcname = joinpath(*arcpath)
70
71 self.source = source
72 self.pyname = pyname
73 self.srcpath = source.srcnode().abspath
74 self.package = package
75 self.modpath = modpath
76 self.arcname = arcname
77 self.filename = filename
78 self.compiled = File(filename + 'c')
79
80########################################################################
81# Code for adding source files of various types
82#
83cc_sources = []
84def Source(source):
85 '''Add a C/C++ source file to the build'''
86 if not isinstance(source, SCons.Node.FS.File):
87 source = File(source)
88
89 cc_sources.append(source)
90
91py_sources = []
92def PySource(package, source):
93 '''Add a python source file to the named package'''
94 if not isinstance(source, SCons.Node.FS.File):
95 source = File(source)
96
97 source = PySourceFile(package, source)
98 py_sources.append(source)
99
100sim_objects_fixed = False
101sim_object_modfiles = set()
102def SimObject(source):
103 '''Add a SimObject python file as a python source object and add
104 it to a list of sim object modules'''
105
106 if sim_objects_fixed:
107 raise AttributeError, "Too late to call SimObject now."
108
109 if not isinstance(source, SCons.Node.FS.File):
110 source = File(source)
111
112 PySource('m5.objects', source)
113 modfile = basename(str(source))
114 assert modfile.endswith('.py')
115 modname = modfile[:-3]
116 sim_object_modfiles.add(modname)
117
118swig_sources = []
119def SwigSource(package, source):
120 '''Add a swig file to build'''
121 if not isinstance(source, SCons.Node.FS.File):
122 source = File(source)
123 val = source,package
124 swig_sources.append(val)
125
126# Children should have access
127Export('Source')
128Export('PySource')
129Export('SimObject')
130Export('SwigSource')
131
132########################################################################
133#
134# Trace Flags
135#
136all_flags = {}
137trace_flags = []
138def TraceFlag(name, desc=''):
139 if name in all_flags:
140 raise AttributeError, "Flag %s already specified" % name
141 flag = (name, (), desc)
142 trace_flags.append(flag)
143 all_flags[name] = ()
144
145def CompoundFlag(name, flags, desc=''):
146 if name in all_flags:
147 raise AttributeError, "Flag %s already specified" % name
148
149 compound = tuple(flags)
150 for flag in compound:
151 if flag not in all_flags:
152 raise AttributeError, "Trace flag %s not found" % flag
153 if all_flags[flag]:
154 raise AttributeError, \
155 "Compound flag can't point to another compound flag"
156
157 flag = (name, compound, desc)
158 trace_flags.append(flag)
159 all_flags[name] = compound
160
161Export('TraceFlag')
162Export('CompoundFlag')
163
164########################################################################
165#
166# Set some compiler variables
167#
168
169# Include file paths are rooted in this directory. SCons will
170# automatically expand '.' to refer to both the source directory and
171# the corresponding build directory to pick up generated include
172# files.
173env.Append(CPPPATH=Dir('.'))
174
175# Add a flag defining what THE_ISA should be for all compilation
176env.Append(CPPDEFINES=[('THE_ISA','%s_ISA' % env['TARGET_ISA'].upper())])
177
178########################################################################
179#
180# Walk the tree and execute all SConscripts in 'src' subdirectories
181#
182
183for base_dir in base_dir_list:
184 src_dir = joinpath(base_dir, 'src')
185 if not isdir(src_dir):
186 continue
187 here = Dir('.').srcnode().abspath
188 for root, dirs, files in os.walk(src_dir, topdown=True):
189 if root == here:
190 # we don't want to recurse back into this SConscript
191 continue
192
193 if 'SConscript' in files:
194 build_dir = joinpath(env['BUILDDIR'], root[len(src_dir) + 1:])
195 SConscript(joinpath(root, 'SConscript'), build_dir=build_dir)
196
197for opt in env.ExportOptions:
198 env.ConfigFile(opt)
199
200########################################################################
201#
202# Prevent any SimObjects from being added after this point, they
203# should all have been added in the SConscripts above
204#
205sim_objects_fixed = True
206
207########################################################################
208#
209# Manually turn python/generate.py into a python module and import it
210#
211generate_file = File('python/generate.py')
212generate_module = imp.new_module('generate')
213sys.modules['generate'] = generate_module
214exec file(generate_file.srcnode().abspath, 'r') in generate_module.__dict__
215
216########################################################################
217#
218# build a generate
219#
220from generate import Generate
221optionDict = dict([(opt, env[opt]) for opt in env.ExportOptions])
222generate = Generate(py_sources, sim_object_modfiles, optionDict)
223m5 = generate.m5
224
225########################################################################
226#
227# calculate extra dependencies
228#
229module_depends = ["m5", "m5.SimObject", "m5.params"]
230module_depends = [ File(generate.py_modules[dep]) for dep in module_depends ]
231file_depends = [ generate_file ]
232depends = module_depends + file_depends
233
234########################################################################
235#
236# Commands for the basic automatically generated python files
237#
238
239# Generate a file with all of the compile options in it
240env.Command('python/m5/defines.py', Value(optionDict),
241 generate.makeDefinesPyFile)
242PySource('m5', 'python/m5/defines.py')
243
244# Generate a file that wraps the basic top level files
245env.Command('python/m5/info.py',
246 [ '#/AUTHORS', '#/LICENSE', '#/README', '#/RELEASE_NOTES' ],
247 generate.makeInfoPyFile)
248PySource('m5', 'python/m5/info.py')
249
250# Generate an __init__.py file for the objects package
251env.Command('python/m5/objects/__init__.py',
252 [ Value(o) for o in sort_list(sim_object_modfiles) ],
253 generate.makeObjectsInitFile)
254PySource('m5.objects', 'python/m5/objects/__init__.py')
255
256########################################################################
257#
258# Create all of the SimObject param headers and enum headers
259#
260
261# Generate all of the SimObject param struct header files
262params_hh_files = []
263for name,simobj in generate.sim_objects.iteritems():
264 extra_deps = [ File(generate.py_modules[simobj.__module__]) ]
265
266 hh_file = File('params/%s.hh' % name)
267 params_hh_files.append(hh_file)
268 env.Command(hh_file, Value(name), generate.createSimObjectParam)
269 env.Depends(hh_file, depends + extra_deps)
270
271# Generate any parameter header files needed
272for name,param in generate.params.iteritems():
273 if isinstance(param, m5.params.VectorParamDesc):
274 ext = 'vptype'
275 else:
276 ext = 'ptype'
277
278 i_file = File('params/%s_%s.i' % (name, ext))
279 env.Command(i_file, Value(name), generate.createSwigParam)
280 env.Depends(i_file, depends)
281
282# Generate all enum header files
283for name,enum in generate.enums.iteritems():
284 extra_deps = [ File(generate.py_modules[enum.__module__]) ]
285
286 cc_file = File('enums/%s.cc' % name)
287 env.Command(cc_file, Value(name), generate.createEnumStrings)
288 env.Depends(cc_file, depends + extra_deps)
289 Source(cc_file)
290
291 hh_file = File('enums/%s.hh' % name)
292 env.Command(hh_file, Value(name), generate.createEnumParam)
293 env.Depends(hh_file, depends + extra_deps)
294
295# Build the big monolithic swigged params module (wraps all SimObject
296# param structs and enum structs)
297params_file = File('params/params.i')
298names = sort_list(generate.sim_objects.keys())
299env.Command(params_file, [ Value(v) for v in names ],
300 generate.buildParams)
301env.Depends(params_file, params_hh_files + depends)
302SwigSource('m5.objects', params_file)
303
304# Build all swig modules
305swig_modules = []
306for source,package in swig_sources:
307 filename = str(source)
308 assert filename.endswith('.i')
309
310 base = '.'.join(filename.split('.')[:-1])
311 module = basename(base)
312 cc_file = base + '_wrap.cc'
313 py_file = base + '.py'
314
315 env.Command([cc_file, py_file], source,
316 '$SWIG $SWIGFLAGS -outdir ${TARGETS[1].dir} '
317 '-o ${TARGETS[0]} $SOURCES')
318 env.Depends(py_file, source)
319 env.Depends(cc_file, source)
320
321 swig_modules.append(Value(module))
322 Source(cc_file)
323 PySource(package, py_file)
324
325# Generate the main swig init file
326env.Command('swig/init.cc', swig_modules, generate.makeSwigInit)
327Source('swig/init.cc')
328
329# Generate traceflags.py
330flags = [ Value(f) for f in trace_flags ]
331env.Command('base/traceflags.py', flags, generate.traceFlagsPy)
332PySource('m5', 'base/traceflags.py')
333
334env.Command('base/traceflags.hh', flags, generate.traceFlagsHH)
335env.Command('base/traceflags.cc', flags, generate.traceFlagsCC)
336Source('base/traceflags.cc')
337
338# Build the zip file
339py_compiled = []
340py_zip_depends = []
341for source in py_sources:
342 env.Command(source.compiled, source.source, generate.compilePyFile)
343 py_compiled.append(source.compiled)
344
345 # make the zipfile depend on the archive name so that the archive
346 # is rebuilt if the name changes
347 py_zip_depends.append(Value(source.arcname))
348
349# Add the zip file target to the environment.
350m5zip = File('m5py.zip')
351env.Command(m5zip, py_compiled, generate.buildPyZip)
352env.Depends(m5zip, py_zip_depends)
353
354########################################################################
355#
356# Define binaries. Each different build type (debug, opt, etc.) gets
357# a slightly different build environment.
358#
359
360# List of constructed environments to pass back to SConstruct
361envList = []
362
363# This function adds the specified sources to the given build
364# environment, and returns a list of all the corresponding SCons
365# Object nodes (including an extra one for date.cc). We explicitly
366# add the Object nodes so we can set up special dependencies for
367# date.cc.
368def make_objs(sources, env):
369 objs = [env.Object(s) for s in sources]
370 # make date.cc depend on all other objects so it always gets
371 # recompiled whenever anything else does
372 date_obj = env.Object('base/date.cc')
373 env.Depends(date_obj, objs)
374 objs.append(date_obj)
375 return objs
376
377# Function to create a new build environment as clone of current
378# environment 'env' with modified object suffix and optional stripped
379# binary. Additional keyword arguments are appended to corresponding
380# build environment vars.
381def makeEnv(label, objsfx, strip = False, **kwargs):
382 newEnv = env.Copy(OBJSUFFIX=objsfx)
383 newEnv.Label = label
384 newEnv.Append(**kwargs)
385 exe = 'm5.' + label # final executable
386 bin = exe + '.bin' # executable w/o appended Python zip archive
387 newEnv.Program(bin, make_objs(cc_sources, newEnv))
388 if strip:
389 stripped_bin = bin + '.stripped'
390 if sys.platform == 'sunos5':
391 cmd = 'cp $SOURCE $TARGET; strip $TARGET'
392 else:
393 cmd = 'strip $SOURCE -o $TARGET'
394 newEnv.Command(stripped_bin, bin, cmd)
395 bin = stripped_bin
396 targets = newEnv.Concat(exe, [bin, 'm5py.zip'])
397 newEnv.M5Binary = targets[0]
398 envList.append(newEnv)
399
400# Debug binary
401ccflags = {}
402if env['GCC']:
403 if sys.platform == 'sunos5':
404 ccflags['debug'] = '-gstabs+'
405 else:
406 ccflags['debug'] = '-ggdb3'
407 ccflags['opt'] = '-g -O3'
408 ccflags['fast'] = '-O3'
409 ccflags['prof'] = '-O3 -g -pg'
410elif env['SUNCC']:
411 ccflags['debug'] = '-g0'
412 ccflags['opt'] = '-g -O'
413 ccflags['fast'] = '-fast'
414 ccflags['prof'] = '-fast -g -pg'
415elif env['ICC']:
416 ccflags['debug'] = '-g -O0'
417 ccflags['opt'] = '-g -O'
418 ccflags['fast'] = '-fast'
419 ccflags['prof'] = '-fast -g -pg'
420else:
421 print 'Unknown compiler, please fix compiler options'
422 Exit(1)
423
424makeEnv('debug', '.do',
425 CCFLAGS = Split(ccflags['debug']),
426 CPPDEFINES = ['DEBUG', 'TRACING_ON=1'])
427
428# Optimized binary
429makeEnv('opt', '.o',
430 CCFLAGS = Split(ccflags['opt']),
431 CPPDEFINES = ['TRACING_ON=1'])
432
433# "Fast" binary
434makeEnv('fast', '.fo', strip = True,
435 CCFLAGS = Split(ccflags['fast']),
436 CPPDEFINES = ['NDEBUG', 'TRACING_ON=0'])
437
438# Profiled binary
439makeEnv('prof', '.po',
440 CCFLAGS = Split(ccflags['prof']),
441 CPPDEFINES = ['NDEBUG', 'TRACING_ON=0'],
442 LINKFLAGS = '-pg')
443
444Return('envList')
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