scons/generic.py

   1 """generic
   2
   3 Generic tool that provides a commmon ground for all platforms.
   4
   5 """
   6
   7 #
   8 # Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   9 # All Rights Reserved.
  10 #
  11 # Permission is hereby granted, free of charge, to any person obtaining a
  12 # copy of this software and associated documentation files (the
  13 # "Software"), to deal in the Software without restriction, including
  14 # without limitation the rights to use, copy, modify, merge, publish,
  15 # distribute, sub license, and/or sell copies of the Software, and to
  16 # permit persons to whom the Software is furnished to do so, subject to
  17 # the following conditions:
  18 #
  19 # The above copyright notice and this permission notice (including the
  20 # next paragraph) shall be included in all copies or substantial portions
  21 # of the Software.
  22 #
  23 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  24 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  26 # IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  27 # ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  28 # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  29 # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 #
  31
  32
  33 import os
  34 import os.path
  35 import re
  36 import platform as _platform
  37 import sys
  38
  39 import SCons.Action
  40 import SCons.Builder
  41 import SCons.Scanner
  42
  43
  44 def quietCommandLines(env):
  45     # Quiet command lines
  46     # See also http://www.scons.org/wiki/HidingCommandLinesInOutput
  47     env['CCCOMSTR'] = "Compiling $SOURCE ..."
  48     env['CXXCOMSTR'] = "Compiling $SOURCE ..."
  49     env['ARCOMSTR'] = "Archiving $TARGET ..."
  50     env['RANLIBCOMSTR'] = ""
  51     env['LINKCOMSTR'] = "Linking $TARGET ..."
  52
  53
  54 def createConvenienceLibBuilder(env):
  55     """This is a utility function that creates the ConvenienceLibrary
  56     Builder in an Environment if it is not there already.
  57
  58     If it is already there, we return the existing one.
  59
  60     Based on the stock StaticLibrary and SharedLibrary builders.
  61     """
  62
  63     try:
  64         convenience_lib = env['BUILDERS']['ConvenienceLibrary']
  65     except KeyError:
  66         action_list = [ SCons.Action.Action("$ARCOM", "$ARCOMSTR") ]
  67         if env.Detect('ranlib'):
  68             ranlib_action = SCons.Action.Action("$RANLIBCOM", "$RANLIBCOMSTR")
  69             action_list.append(ranlib_action)
  70
  71         convenience_lib = SCons.Builder.Builder(action = action_list,
  72                                   emitter = '$LIBEMITTER',
  73                                   prefix = '$LIBPREFIX',
  74                                   suffix = '$LIBSUFFIX',
  75                                   src_suffix = '$SHOBJSUFFIX',
  76                                   src_builder = 'SharedObject')
  77         env['BUILDERS']['ConvenienceLibrary'] = convenience_lib
  78
  79     return convenience_lib
  80
  81
  82 # TODO: handle import statements with multiple modules
  83 # TODO: handle from import statements
  84 import_re = re.compile(r'^import\s+(\S+)$', re.M)
  85
  86 def python_scan(node, env, path):
  87     # http://www.scons.org/doc/0.98.5/HTML/scons-user/c2781.html#AEN2789
  88     contents = node.get_contents()
  89     source_dir = node.get_dir()
  90     imports = import_re.findall(contents)
  91     results = []
  92     for imp in imports:
  93         for dir in path:
  94             file = os.path.join(str(dir), imp.replace('.', os.sep) + '.py')
  95             if os.path.exists(file):
  96                 results.append(env.File(file))
  97                 break
  98             file = os.path.join(str(dir), imp.replace('.', os.sep), '__init__.py')
  99             if os.path.exists(file):
 100                 results.append(env.File(file))
 101                 break
 102     return results
 103
 104 python_scanner = SCons.Scanner.Scanner(function = python_scan, skeys = ['.py'])
 105
 106
 107 def code_generate(env, script, target, source, command):
 108     """Method to simplify code generation via python scripts.
 109
 110     http://www.scons.org/wiki/UsingCodeGenerators
 111     http://www.scons.org/doc/0.98.5/HTML/scons-user/c2768.html
 112     """
 113
 114     # We're generating code using Python scripts, so we have to be
 115     # careful with our scons elements.  This entry represents
 116     # the generator file *in the source directory*.
 117     script_src = env.File(script).srcnode()
 118
 119     # This command creates generated code *in the build directory*.
 120     command = command.replace('$SCRIPT', script_src.path)
 121     code = env.Command(target, source, command)
 122
 123     # Explicitly mark that the generated code depends on the generator,
 124     # and on implicitly imported python modules
 125     path = (script_src.get_dir(),)
 126     deps = [script_src]
 127     deps += script_src.get_implicit_deps(env, python_scanner, path)
 128     env.Depends(code, deps)
 129
 130     # Running the Python script causes .pyc files to be generated in the
 131     # source directory.  When we clean up, they should go too. So add side
 132     # effects for .pyc files
 133     for dep in deps:
 134         pyc = env.File(str(dep) + 'c')
 135         env.SideEffect(pyc, code)
 136
 137     return code
 138
 139
 140 def createCodeGenerateMethod(env):
 141     env.Append(SCANNERS = python_scanner)
 142     env.AddMethod(code_generate, 'CodeGenerate')
 143
 144
 145 def symlink(target, source, env):
 146     target = str(target[0])
 147     source = str(source[0])
 148     if os.path.islink(target) or os.path.exists(target):
 149         os.remove(target)
 150     os.symlink(os.path.basename(source), target)
 151
 152 def install_shared_library(env, source, version = ()):
 153     source = str(source[0])
 154     version = tuple(map(str, version))
 155     target_dir =  os.path.join(env.Dir('#.').srcnode().abspath, env['build'], 'lib')
 156     target_name = '.'.join((str(source),) + version)
 157     last = env.InstallAs(os.path.join(target_dir, target_name), source)
 158     while len(version):
 159         version = version[:-1]
 160         target_name = '.'.join((str(source),) + version)
 161         action = SCons.Action.Action(symlink, "$TARGET -> $SOURCE")
 162         last = env.Command(os.path.join(target_dir, target_name), last, action)
 163
 164 def createInstallMethods(env):
 165     env.AddMethod(install_shared_library, 'InstallSharedLibrary')
 166
 167
 168 _platform_map = {
 169     'linux2': 'linux',
 170     'win32': 'windows',
 171 }
 172
 173
 174 _machine_map = {
 175         'x86': 'x86',
 176         'i386': 'x86',
 177         'i486': 'x86',
 178         'i586': 'x86',
 179         'i686': 'x86',
 180         'ppc': 'ppc',
 181         'x86_64': 'x86_64',
 182 }
 183
 184
 185 _toolchain_map = {
 186     'winddk': 'winddk',
 187     'wince': 'wcesdk',
 188 }
 189
 190
 191 _bool_map = {
 192     'y': 1,
 193     'yes': 1,
 194     't': 1,
 195     'true': 1,
 196     '1': 1,
 197     'on': 1,
 198     'all': 1,
 199     'n': 0,
 200     'no': 0,
 201     'f': 0,
 202     'false': 0,
 203     '0': 0,
 204     'off': 0,
 205     'none': 0,
 206 }
 207
 208
 209 def num_jobs():
 210     try:
 211         return int(os.environ['NUMBER_OF_PROCESSORS'])
 212     except (ValueError, KeyError):
 213         pass
 214
 215     try:
 216         return os.sysconf('SC_NPROCESSORS_ONLN')
 217     except (ValueError, OSError, AttributeError):
 218         pass
 219
 220     try:
 221         return int(os.popen2("sysctl -n hw.ncpu")[1].read())
 222     except ValueError:
 223         pass
 224
 225     return 1
 226
 227
 228 def generate(env):
 229     """Common environment generation code"""
 230
 231     from SCons.Script import ARGUMENTS
 232
 233     # FIXME: this is already too late
 234     #if env.get('quiet', False):
 235     #    quietCommandLines(env)
 236
 237
 238     # Platform
 239     try:
 240         env['platform'] = ARGUMENTS['platform']
 241     except KeyError:
 242         env['platform'] = _platform_map.get(sys.platform, sys.platform)
 243
 244     # Machine
 245     try:
 246         env['machine'] = ARGUMENTS['machine']
 247     except KeyError:
 248         env['machine'] = _machine_map.get(os.environ.get('PROCESSOR_ARCHITECTURE', _platform.machine()), 'generic')
 249
 250     # Toolchain
 251     try:
 252         env['toolchain'] = ARGUMENTS['toolchain']
 253     except KeyError:
 254         if env['platform'] in ('windows', 'winddk', 'wince') and sys.platform != 'win32':
 255             env['toolchain'] = 'crossmingw'
 256         else:
 257             env['toolchain'] = _toolchain_map.get(env['platform'], 'default')
 258     if env['toolchain'] == 'crossmingw' and env['machine'] not in ('generic', 'x86'):
 259             env['machine'] = 'x86'
 260
 261     try:
 262         env['MSVS_VERSION'] = ARGUMENTS['MSVS_VERSION']
 263     except KeyError:
 264         pass
 265
 266     # Build type
 267     env['debug'] = _bool_map[ARGUMENTS.get('debug', 'no')]
 268     env['profile'] = _bool_map[ARGUMENTS.get('profile', 'no')]
 269
 270     # Put build output in a separate dir, which depends on the current
 271     # configuration. See also http://www.scons.org/wiki/AdvancedBuildExample
 272     try:
 273         env['build'] = ARGUMENTS['build']
 274     except KeyError:
 275         build_topdir = 'build'
 276         build_subdir = env['platform']
 277         if env['machine'] != 'generic':
 278             build_subdir += '-' + env['machine']
 279         if env['debug']:
 280             build_subdir += "-debug"
 281         if env['profile']:
 282             build_subdir += "-profile"
 283         env['build'] = os.path.join(build_topdir, build_subdir)
 284     # Place the .sconsign file in the build dir too, to avoid issues with
 285     # different scons versions building the same source file
 286     env.SConsignFile(os.path.join(env['build'], '.sconsign'))
 287
 288     # Parallel build
 289     if env.GetOption('num_jobs') <= 1:
 290         env.SetOption('num_jobs', num_jobs())
 291
 292     # Summary
 293     print
 294     print '  platform=%s' % env['platform']
 295     print '  machine=%s' % env['machine']
 296     print '  toolchain=%s' % env['toolchain']
 297     print '  debug=%s' % ['no', 'yes'][env['debug']]
 298     print '  profile=%s' % ['no', 'yes'][env['profile']]
 299     print '  build=%s' % env['build']
 300     print '  %s jobs' % env.GetOption('num_jobs')
 301     print
 302
 303     # Load tool chain
 304     env.Tool(env['toolchain'])
 305
 306     env['gcc'] = 'gcc' in os.path.basename(env['CC']).split('-')
 307     env['msvc'] = env['CC'] == 'cl'
 308
 309     # shortcuts
 310     debug = env['debug']
 311     machine = env['machine']
 312     platform = env['platform']
 313     x86 = env['machine'] == 'x86'
 314     ppc = env['machine'] == 'ppc'
 315     gcc = env['gcc']
 316     msvc = env['msvc']
 317
 318     # C preprocessor options
 319     cppdefines = []
 320     if debug:
 321         cppdefines += ['DEBUG']
 322     else:
 323         cppdefines += ['NDEBUG']
 324     if env['profile']:
 325         cppdefines += ['PROFILE']
 326     if platform == 'windows':
 327         cppdefines += [
 328             'WIN32',
 329             '_WINDOWS',
 330             #'_UNICODE',
 331             #'UNICODE',
 332             # http://msdn2.microsoft.com/en-us/library/6dwk3a1z.aspx,
 333             #'WIN32_LEAN_AND_MEAN',
 334         ]
 335         if msvc:
 336             cppdefines += [
 337                 'VC_EXTRALEAN',
 338                 '_USE_MATH_DEFINES',
 339                 '_CRT_SECURE_NO_WARNINGS',
 340                 '_CRT_SECURE_NO_DEPRECATE',
 341                 '_SCL_SECURE_NO_WARNINGS',
 342                 '_SCL_SECURE_NO_DEPRECATE',
 343             ]
 344         if debug:
 345             cppdefines += ['_DEBUG']
 346     if platform == 'winddk':
 347         # Mimic WINDDK's builtin flags. See also:
 348         # - WINDDK's bin/makefile.new i386mk.inc for more info.
 349         # - buildchk_wxp_x86.log files, generated by the WINDDK's build
 350         # - http://alter.org.ua/docs/nt_kernel/vc8_proj/
 351         cppdefines += [
 352             ('_X86_', '1'),
 353             ('i386', '1'),
 354             'STD_CALL',
 355             ('CONDITION_HANDLING', '1'),
 356             ('NT_INST', '0'),
 357             ('WIN32', '100'),
 358             ('_NT1X_', '100'),
 359             ('WINNT', '1'),
 360             ('_WIN32_WINNT', '0x0501'), # minimum required OS version
 361             ('WINVER', '0x0501'),
 362             ('_WIN32_IE', '0x0603'),
 363             ('WIN32_LEAN_AND_MEAN', '1'),
 364             ('DEVL', '1'),
 365             ('__BUILDMACHINE__', 'WinDDK'),
 366             ('FPO', '0'),
 367         ]
 368         if debug:
 369             cppdefines += [('DBG', 1)]
 370     if platform == 'wince':
 371         cppdefines += [
 372             '_CRT_SECURE_NO_DEPRECATE',
 373             '_USE_32BIT_TIME_T',
 374             'UNICODE',
 375             '_UNICODE',
 376             ('UNDER_CE', '600'),
 377             ('_WIN32_WCE', '0x600'),
 378             'WINCEOEM',
 379             'WINCEINTERNAL',
 380             'WIN32',
 381             'STRICT',
 382             'x86',
 383             '_X86_',
 384             'INTERNATIONAL',
 385             ('INTLMSG_CODEPAGE', '1252'),
 386         ]
 387     env.Append(CPPDEFINES = cppdefines)
 388
 389     # C preprocessor includes
 390     if platform == 'winddk':
 391         env.Append(CPPPATH = [
 392             env['SDK_INC_PATH'],
 393             env['DDK_INC_PATH'],
 394             env['WDM_INC_PATH'],
 395             env['CRT_INC_PATH'],
 396         ])
 397
 398     # C compiler options
 399     cflags = [] # C
 400     cxxflags = [] # C++
 401     ccflags = [] # C & C++
 402     if gcc:
 403         if debug:
 404             ccflags += ['-O0', '-g3']
 405         elif env['toolchain'] == 'crossmingw':
 406             ccflags += ['-O0', '-g3'] # mingw 4.2.1 optimizer is broken
 407         else:
 408             ccflags += ['-O3', '-g0']
 409         if env['machine'] == 'x86':
 410             ccflags += [
 411                 '-m32',
 412                 #'-march=pentium4',
 413                 '-mmmx', '-msse', '-msse2', # enable SIMD intrinsics
 414                 #'-mfpmath=sse',
 415             ]
 416         if env['machine'] == 'x86_64':
 417             ccflags += ['-m64']
 418         # See also:
 419         # - http://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html
 420         ccflags += [
 421             '-Wall',
 422             '-Wmissing-field-initializers',
 423             '-Wpointer-arith',
 424             '-Wno-long-long',
 425             '-ffast-math',
 426             '-fmessage-length=0', # be nice to Eclipse
 427         ]
 428         cflags += [
 429             '-Werror=declaration-after-statement',
 430             '-Wmissing-prototypes',
 431             '-std=gnu99',
 432         ]
 433     if msvc:
 434         # See also:
 435         # - http://msdn.microsoft.com/en-us/library/19z1t1wy.aspx
 436         # - cl /?
 437         if debug:
 438             ccflags += [
 439               '/Od', # disable optimizations
 440               '/Oi', # enable intrinsic functions
 441               '/Oy-', # disable frame pointer omission
 442               '/GL-', # disable whole program optimization
 443             ]
 444         else:
 445             ccflags += [
 446               '/Ox', # maximum optimizations
 447               '/Oi', # enable intrinsic functions
 448               '/Ot', # favor code speed
 449               #'/fp:fast', # fast floating point
 450             ]
 451         ccflags += [
 452             '/W3', # warning level
 453             #'/Wp64', # enable 64 bit porting warnings
 454         ]
 455         if env['machine'] == 'x86':
 456             ccflags += [
 457                 #'/QIfist', # Suppress _ftol
 458                 #'/arch:SSE2', # use the SSE2 instructions
 459             ]
 460         if platform == 'windows':
 461             ccflags += [
 462                 # TODO
 463             ]
 464         if platform == 'winddk':
 465             ccflags += [
 466                 '/Zl', # omit default library name in .OBJ
 467                 '/Zp8', # 8bytes struct member alignment
 468                 '/Gy', # separate functions for linker
 469                 '/Gm-', # disable minimal rebuild
 470                 '/WX', # treat warnings as errors
 471                 '/Gz', # __stdcall Calling convention
 472                 '/GX-', # disable C++ EH
 473                 '/GR-', # disable C++ RTTI
 474                 '/GF', # enable read-only string pooling
 475                 '/G6', # optimize for PPro, P-II, P-III
 476                 '/Ze', # enable extensions
 477                 '/Gi-', # disable incremental compilation
 478                 '/QIfdiv-', # disable Pentium FDIV fix
 479                 '/hotpatch', # prepares an image for hotpatching.
 480                 #'/Z7', #enable old-style debug info
 481             ]
 482         if platform == 'wince':
 483             # See also C:\WINCE600\public\common\oak\misc\makefile.def
 484             ccflags += [
 485                 '/Zl', # omit default library name in .OBJ
 486                 '/GF', # enable read-only string pooling
 487                 '/GR-', # disable C++ RTTI
 488                 '/GS', # enable security checks
 489                 # Allow disabling language conformance to maintain backward compat
 490                 #'/Zc:wchar_t-', # don't force wchar_t as native type, instead of typedef
 491                 #'/Zc:forScope-', # don't enforce Standard C++ for scoping rules
 492                 #'/wd4867',
 493                 #'/wd4430',
 494                 #'/MT',
 495                 #'/U_MT',
 496             ]
 497         # Automatic pdb generation
 498         # See http://scons.tigris.org/issues/show_bug.cgi?id=1656
 499         env.EnsureSConsVersion(0, 98, 0)
 500         env['PDB'] = '${TARGET.base}.pdb'
 501     env.Append(CCFLAGS = ccflags)
 502     env.Append(CFLAGS = cflags)
 503     env.Append(CXXFLAGS = cxxflags)
 504
 505     if env['platform'] == 'windows' and msvc:
 506         # Choose the appropriate MSVC CRT
 507         # http://msdn.microsoft.com/en-us/library/2kzt1wy3.aspx
 508         if env['debug']:
 509             env.Append(CCFLAGS = ['/MTd'])
 510             env.Append(SHCCFLAGS = ['/LDd'])
 511         else:
 512             env.Append(CCFLAGS = ['/MT'])
 513             env.Append(SHCCFLAGS = ['/LD'])
 514
 515     # Assembler options
 516     if gcc:
 517         if env['machine'] == 'x86':
 518             env.Append(ASFLAGS = ['-m32'])
 519         if env['machine'] == 'x86_64':
 520             env.Append(ASFLAGS = ['-m64'])
 521
 522     # Linker options
 523     linkflags = []
 524     if gcc:
 525         if env['machine'] == 'x86':
 526             linkflags += ['-m32']
 527         if env['machine'] == 'x86_64':
 528             linkflags += ['-m64']
 529     if platform == 'windows' and msvc:
 530         # See also:
 531         # - http://msdn2.microsoft.com/en-us/library/y0zzbyt4.aspx
 532         linkflags += [
 533             '/fixed:no',
 534             '/incremental:no',
 535         ]
 536     if platform == 'winddk':
 537         linkflags += [
 538             '/merge:_PAGE=PAGE',
 539             '/merge:_TEXT=.text',
 540             '/section:INIT,d',
 541             '/opt:ref',
 542             '/opt:icf',
 543             '/ignore:4198,4010,4037,4039,4065,4070,4078,4087,4089,4221',
 544             '/incremental:no',
 545             '/fullbuild',
 546             '/release',
 547             '/nodefaultlib',
 548             '/wx',
 549             '/debug',
 550             '/debugtype:cv',
 551             '/version:5.1',
 552             '/osversion:5.1',
 553             '/functionpadmin:5',
 554             '/safeseh',
 555             '/pdbcompress',
 556             '/stack:0x40000,0x1000',
 557             '/driver',
 558             '/align:0x80',
 559             '/subsystem:native,5.01',
 560             '/base:0x10000',
 561
 562             '/entry:DrvEnableDriver',
 563         ]
 564         if env['debug'] or env['profile']:
 565             linkflags += [
 566                 '/MAP', # http://msdn.microsoft.com/en-us/library/k7xkk3e2.aspx
 567             ]
 568     if platform == 'wince':
 569         linkflags += [
 570             '/nodefaultlib',
 571             #'/incremental:no',
 572             #'/fullbuild',
 573             '/entry:_DllMainCRTStartup',
 574         ]
 575     env.Append(LINKFLAGS = linkflags)
 576
 577     # Default libs
 578     env.Append(LIBS = [])
 579
 580     # Custom builders and methods
 581     createConvenienceLibBuilder(env)
 582     createCodeGenerateMethod(env)
 583     createInstallMethods(env)
 584
 585     # for debugging
 586     #print env.Dump()
 587
 588
 589 def exists(env):
 590     return 1