"""SCons.Script This file implements the main() function used by the scons script. Architecturally, this *is* the scons script, and will likely only be called from the external "scons" wrapper. Consequently, anything here should not be, or be considered, part of the build engine. If it's something that we expect other software to want to use, it should go in some other module. If it's specific to the "scons" script invocation, it goes here. """ # # __COPYRIGHT__ # # Permission is hereby granted, free of charge, to any person obtaining # a copy of this software and associated documentation files (the # "Software"), to deal in the Software without restriction, including # without limitation the rights to use, copy, modify, merge, publish, # distribute, sublicense, and/or sell copies of the Software, and to # permit persons to whom the Software is furnished to do so, subject to # the following conditions: # # The above copyright notice and this permission notice shall be included # in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__" import os import os.path import random import string import sys import time import traceback # Strip the script directory from sys.path() so on case-insensitive # (Windows) systems Python doesn't think that the "scons" script is the # "SCons" package. Replace it with our own version directory so, if # if they're there, we pick up the right version of the build engine # modules. #sys.path = [os.path.join(sys.prefix, # 'lib', # 'scons-%d' % SCons.__version__)] + sys.path[1:] import SCons.Debug import SCons.Defaults import SCons.Environment import SCons.Errors import SCons.Job import SCons.Node import SCons.Node.FS from SCons.Optik import OptionParser, SUPPRESS_HELP, OptionValueError import SCons.SConf import SCons.Sig import SCons.Taskmaster import SCons.Util import SCons.Warnings # display = SCons.Util.display progress_display = SCons.Util.DisplayEngine() # Task control. # class BuildTask(SCons.Taskmaster.Task): """An SCons build task.""" def display(self, message): display('scons: ' + message) def execute(self): for target in self.targets: if target.get_state() == SCons.Node.up_to_date: continue if target.has_builder() and not hasattr(target.builder, 'status'): if print_time: start_time = time.time() SCons.Taskmaster.Task.execute(self) if print_time: finish_time = time.time() global command_time command_time = command_time+finish_time-start_time print "Command execution time: %f seconds"%(finish_time-start_time) break else: if self.top and target.has_builder(): display("scons: `%s' is up to date." % str(self.node)) def do_failed(self, status=2): global exit_status if ignore_errors: SCons.Taskmaster.Task.executed(self) elif keep_going_on_error: SCons.Taskmaster.Task.fail_continue(self) exit_status = status else: SCons.Taskmaster.Task.fail_stop(self) exit_status = status def executed(self): t = self.targets[0] if self.top and not t.has_builder() and not t.side_effect: if not t.exists(): sys.stderr.write("scons: *** Do not know how to make target `%s'." % t) if not keep_going_on_error: sys.stderr.write(" Stop.") sys.stderr.write("\n") self.do_failed() else: print "scons: Nothing to be done for `%s'." % t SCons.Taskmaster.Task.executed(self) else: SCons.Taskmaster.Task.executed(self) def failed(self): # Handle the failure of a build task. The primary purpose here # is to display the various types of Errors and Exceptions # appropriately. status = 2 exc_info = self.exc_info() try: t, e, tb = exc_info except ValueError: t, e = exc_info tb = None if t is None: # The Taskmaster didn't record an exception for this Task; # see if the sys module has one. t, e = sys.exc_info()[:2] def nodestring(n): if not SCons.Util.is_List(n): n = [ n ] return string.join(map(str, n), ', ') errfmt = "scons: *** [%s] %s\n" if t == SCons.Errors.BuildError: tname = nodestring(e.node) errstr = e.errstr if e.filename: errstr = e.filename + ': ' + errstr sys.stderr.write(errfmt % (tname, errstr)) elif t == SCons.Errors.TaskmasterException: tname = nodestring(e.node) sys.stderr.write(errfmt % (tname, e.errstr)) type, value, trace = e.exc_info traceback.print_exception(type, value, trace) elif t == SCons.Errors.ExplicitExit: status = e.status tname = nodestring(e.node) errstr = 'Explicit exit, status %s' % status sys.stderr.write(errfmt % (tname, errstr)) else: if e is None: e = t s = str(e) if t == SCons.Errors.StopError and not keep_going_on_error: s = s + ' Stop.' sys.stderr.write("scons: *** %s\n" % s) if tb and print_stacktrace: sys.stderr.write("scons: internal stack trace:\n") traceback.print_tb(tb, file=sys.stderr) self.do_failed(status) self.exc_clear() def postprocess(self): if self.top: t = self.targets[0] if print_tree: print SCons.Util.print_tree(t, get_all_children) if print_stree: print SCons.Util.print_tree(t, get_all_children, showtags=2) if print_dtree: print SCons.Util.print_tree(t, get_derived_children) if print_includes: tree = t.render_include_tree() if tree: print print tree SCons.Taskmaster.Task.postprocess(self) def make_ready(self): """Make a task ready for execution""" SCons.Taskmaster.Task.make_ready(self) if self.out_of_date and print_explanations: explanation = self.out_of_date[0].explain() if explanation: sys.stdout.write("scons: " + explanation) class CleanTask(SCons.Taskmaster.Task): """An SCons clean task.""" def dir_index(self, directory): dirname = lambda f, d=directory: os.path.join(d, f) files = map(dirname, os.listdir(directory)) # os.listdir() isn't guaranteed to return files in any specific order, # but some of the test code expects sorted output. files.sort() return files def fs_delete(self, path, remove=1): try: if os.path.exists(path): if os.path.isfile(path): if remove: os.unlink(path) display("Removed " + path) elif os.path.isdir(path) and not os.path.islink(path): # delete everything in the dir for p in self.dir_index(path): if os.path.isfile(p): if remove: os.unlink(p) display("Removed " + p) else: self.fs_delete(p, remove) # then delete dir itself if remove: os.rmdir(path) display("Removed directory " + path) except (IOError, OSError), e: print "scons: Could not remove '%s':" % str(path), e.strerror def show(self): target = self.targets[0] if (target.has_builder() or target.side_effect) and not target.noclean: for t in self.targets: if not t.isdir(): display("Removed " + str(t)) if SCons.Environment.CleanTargets.has_key(target): files = SCons.Environment.CleanTargets[target] for f in files: self.fs_delete(str(f), 0) def remove(self): target = self.targets[0] if (target.has_builder() or target.side_effect) and not target.noclean: for t in self.targets: try: removed = t.remove() except OSError, e: # An OSError may indicate something like a permissions # issue, an IOError would indicate something like # the file not existing. In either case, print a # message and keep going to try to remove as many # targets aa possible. print "scons: Could not remove '%s':" % str(t), e.strerror else: if removed: display("Removed " + str(t)) if SCons.Environment.CleanTargets.has_key(target): files = SCons.Environment.CleanTargets[target] for f in files: self.fs_delete(str(f)) execute = remove # Have the taskmaster arrange to "execute" all of the targets, because # we'll figure out ourselves (in remove() or show() above) whether # anything really needs to be done. make_ready = SCons.Taskmaster.Task.make_ready_all def prepare(self): pass class QuestionTask(SCons.Taskmaster.Task): """An SCons task for the -q (question) option.""" def prepare(self): pass def execute(self): if self.targets[0].get_state() != SCons.Node.up_to_date: global exit_status exit_status = 1 self.tm.stop() def executed(self): pass # Global variables keep_going_on_error = 0 print_dtree = 0 print_explanations = 0 print_includes = 0 print_objects = 0 print_memoizer = 0 print_stacktrace = 0 print_stree = 0 print_time = 0 print_tree = 0 ignore_errors = 0 sconscript_time = 0 command_time = 0 exit_status = 0 # exit status, assume success by default repositories = [] num_jobs = 1 # this is modifed by SConscript.SetJobs() delayed_warnings = [] diskcheck_all = SCons.Node.FS.diskcheck_types() diskcheck_option_set = None def diskcheck_convert(value): if value is None: return [] if not SCons.Util.is_List(value): value = string.split(value, ',') result = [] for v in map(string.lower, value): if v == 'all': result = diskcheck_all elif v == 'none': result = [] elif v in diskcheck_all: result.append(v) else: raise ValueError, v return result # class Stats: def __init__(self): self.stats = [] self.labels = [] self.append = self.do_nothing self.print_stats = self.do_nothing def enable(self, outfp): self.outfp = outfp self.append = self.do_append self.print_stats = self.do_print def do_nothing(self, *args, **kw): pass class CountStats(Stats): def do_append(self, label): self.labels.append(label) self.stats.append(SCons.Debug.fetchLoggedInstances()) def do_print(self): stats_table = {} for s in self.stats: for n in map(lambda t: t[0], s): stats_table[n] = [0, 0, 0, 0] i = 0 for s in self.stats: for n, c in s: stats_table[n][i] = c i = i + 1 keys = stats_table.keys() keys.sort() self.outfp.write("Object counts:\n") pre = [" "] post = [" %s\n"] l = len(self.stats) fmt1 = string.join(pre + [' %7s']*l + post, '') fmt2 = string.join(pre + [' %7d']*l + post, '') labels = self.labels[:l] labels.append(("", "Class")) self.outfp.write(fmt1 % tuple(map(lambda x: x[0], labels))) self.outfp.write(fmt1 % tuple(map(lambda x: x[1], labels))) for k in keys: r = stats_table[k][:l] + [k] self.outfp.write(fmt2 % tuple(r)) count_stats = CountStats() class MemStats(Stats): def do_append(self, label): self.labels.append(label) self.stats.append(SCons.Debug.memory()) def do_print(self): fmt = 'Memory %-32s %12d\n' for label, stats in map(None, self.labels, self.stats): self.outfp.write(fmt % (label, stats)) memory_stats = MemStats() # utility functions def get_all_children(node): return node.all_children() def get_derived_children(node): children = node.all_children(None) return filter(lambda x: x.has_builder(), children) def _scons_syntax_error(e): """Handle syntax errors. Print out a message and show where the error occurred. """ etype, value, tb = sys.exc_info() lines = traceback.format_exception_only(etype, value) for line in lines: sys.stderr.write(line+'\n') sys.exit(2) def find_deepest_user_frame(tb): """ Find the deepest stack frame that is not part of SCons. Input is a "pre-processed" stack trace in the form returned by traceback.extract_tb() or traceback.extract_stack() """ tb.reverse() # find the deepest traceback frame that is not part # of SCons: for frame in tb: filename = frame[0] if string.find(filename, os.sep+'SCons'+os.sep) == -1: return frame return tb[0] def _scons_user_error(e): """Handle user errors. Print out a message and a description of the error, along with the line number and routine where it occured. The file and line number will be the deepest stack frame that is not part of SCons itself. """ global print_stacktrace etype, value, tb = sys.exc_info() if print_stacktrace: traceback.print_exception(etype, value, tb) filename, lineno, routine, dummy = find_deepest_user_frame(traceback.extract_tb(tb)) sys.stderr.write("\nscons: *** %s\n" % value) sys.stderr.write('File "%s", line %d, in %s\n' % (filename, lineno, routine)) sys.exit(2) def _scons_user_warning(e): """Handle user warnings. Print out a message and a description of the warning, along with the line number and routine where it occured. The file and line number will be the deepest stack frame that is not part of SCons itself. """ etype, value, tb = sys.exc_info() filename, lineno, routine, dummy = find_deepest_user_frame(traceback.extract_tb(tb)) sys.stderr.write("\nscons: warning: %s\n" % e) sys.stderr.write('File "%s", line %d, in %s\n' % (filename, lineno, routine)) def _scons_internal_warning(e): """Slightly different from _scons_user_warning in that we use the *current call stack* rather than sys.exc_info() to get our stack trace. This is used by the warnings framework to print warnings.""" filename, lineno, routine, dummy = find_deepest_user_frame(traceback.extract_stack()) sys.stderr.write("\nscons: warning: %s\n" % e[0]) sys.stderr.write('File "%s", line %d, in %s\n' % (filename, lineno, routine)) def _scons_internal_error(): """Handle all errors but user errors. Print out a message telling the user what to do in this case and print a normal trace. """ print 'internal error' traceback.print_exc() sys.exit(2) def _varargs(option, parser): value = None if parser.rargs: arg = parser.rargs[0] if arg[0] != "-": value = arg del parser.rargs[0] return value def _setup_warn(arg): """The --warn option. An argument to this option should be of the form or no-. The warning class is munged in order to get an actual class name from the SCons.Warnings module to enable or disable. The supplied is split on hyphens, each element is captialized, then smushed back together. Then the string "SCons.Warnings." is added to the front and "Warning" is added to the back to get the fully qualified class name. For example, --warn=deprecated will enable the SCons.Warnings.DeprecatedWarning class. --warn=no-dependency will disable the SCons.Warnings.DependencyWarning class. As a special case, --warn=all and --warn=no-all will enable or disable (respectively) the base class of all warnings, which is SCons.Warning.Warning.""" elems = string.split(string.lower(arg), '-') enable = 1 if elems[0] == 'no': enable = 0 del elems[0] if len(elems) == 1 and elems[0] == 'all': class_name = "Warning" else: def _capitalize(s): if s[:5] == "scons": return "SCons" + s[5:] else: return string.capitalize(s) class_name = string.join(map(_capitalize, elems), '') + "Warning" try: clazz = getattr(SCons.Warnings, class_name) except AttributeError: sys.stderr.write("No warning type: '%s'\n" % arg) else: if enable: SCons.Warnings.enableWarningClass(clazz) else: SCons.Warnings.suppressWarningClass(clazz) def _SConstruct_exists(dirname=''): """This function checks that an SConstruct file exists in a directory. If so, it returns the path of the file. By default, it checks the current directory. """ global repositories for file in ['SConstruct', 'Sconstruct', 'sconstruct']: sfile = os.path.join(dirname, file) if os.path.isfile(sfile): return sfile if not os.path.isabs(sfile): for rep in repositories: if os.path.isfile(os.path.join(rep, sfile)): return sfile return None def _set_globals(options): global keep_going_on_error, ignore_errors global count_stats, print_dtree global print_explanations, print_includes, print_memoizer global print_objects, print_stacktrace, print_stree global print_time, print_tree global memory_stats keep_going_on_error = options.keep_going try: debug_values = options.debug if debug_values is None: debug_values = [] except AttributeError: pass else: if "count" in debug_values: count_stats.enable(sys.stdout) if "dtree" in debug_values: print_dtree = 1 if "explain" in debug_values: print_explanations = 1 if "findlibs" in debug_values: SCons.Scanner.Prog.print_find_libs = "findlibs" if "includes" in debug_values: print_includes = 1 if "memoizer" in debug_values: print_memoizer = 1 if "memory" in debug_values: memory_stats.enable(sys.stdout) if "objects" in debug_values: print_objects = 1 if "presub" in debug_values: SCons.Action.print_actions_presub = 1 if "stacktrace" in debug_values: print_stacktrace = 1 if "stree" in debug_values: print_stree = 1 if "time" in debug_values: print_time = 1 if "tree" in debug_values: print_tree = 1 ignore_errors = options.ignore_errors def _create_path(plist): path = '.' for d in plist: if os.path.isabs(d): path = d else: path = path + '/' + d return path def version_string(label, module): fmt = "\t%s: v%s.%s, %s, by %s on %s\n" return fmt % (label, module.__version__, module.__build__, module.__date__, module.__developer__, module.__buildsys__) class OptParser(OptionParser): def __init__(self): import __main__ parts = ["SCons by Steven Knight et al.:\n"] try: parts.append(version_string("script", __main__)) except KeyboardInterrupt: raise except: # On Windows there is no scons.py, so there is no # __main__.__version__, hence there is no script version. pass parts.append(version_string("engine", SCons)) parts.append("__COPYRIGHT__") OptionParser.__init__(self, version=string.join(parts, ''), usage="usage: scons [OPTION] [TARGET] ...") # options ignored for compatibility def opt_ignore(option, opt, value, parser): sys.stderr.write("Warning: ignoring %s option\n" % opt) self.add_option("-b", "-m", "-S", "-t", "--no-keep-going", "--stop", "--touch", action="callback", callback=opt_ignore, help="Ignored for compatibility.") self.add_option('-c', '--clean', '--remove', action="store_true", dest="clean", help="Remove specified targets and dependencies.") self.add_option('-C', '--directory', type="string", action = "append", metavar="DIR", help="Change to DIR before doing anything.") self.add_option('--cache-debug', action="store", dest="cache_debug", metavar="FILE", help="Print CacheDir debug info to FILE.") self.add_option('--cache-disable', '--no-cache', action="store_true", dest='cache_disable', default=0, help="Do not retrieve built targets from CacheDir.") self.add_option('--cache-force', '--cache-populate', action="store_true", dest='cache_force', default=0, help="Copy already-built targets into the CacheDir.") self.add_option('--cache-show', action="store_true", dest='cache_show', default=0, help="Print build actions for files from CacheDir.") config_options = ["auto", "force" ,"cache"] def opt_config(option, opt, value, parser, c_options=config_options): if value in c_options: parser.values.config = value else: raise OptionValueError("Warning: %s is not a valid config type" % value) self.add_option('--config', action="callback", type="string", callback=opt_config, nargs=1, dest="config", metavar="MODE", default="auto", help="Controls Configure subsystem: " "%s." % string.join(config_options, ", ")) def opt_not_yet(option, opt, value, parser): sys.stderr.write("Warning: the %s option is not yet implemented\n" % opt) sys.exit(0) self.add_option('-d', action="callback", callback=opt_not_yet, help = "Print file dependency information.") self.add_option('-D', action="store_const", const=2, dest="climb_up", help="Search up directory tree for SConstruct, " "build all Default() targets.") debug_options = ["count", "dtree", "explain", "findlibs", "includes", "memoizer", "memory", "objects", "pdb", "presub", "stacktrace", "stree", "time", "tree"] deprecated_debug_options = [ "nomemoizer", ] def opt_debug(option, opt, value, parser, debug_options=debug_options, deprecated_debug_options=deprecated_debug_options): if value in debug_options: try: if parser.values.debug is None: parser.values.debug = [] except AttributeError: parser.values.debug = [] parser.values.debug.append(value) elif value in deprecated_debug_options: w = "The --debug=%s option is deprecated and has no effect." % value delayed_warnings.append((SCons.Warnings.DeprecatedWarning, w)) else: raise OptionValueError("Warning: %s is not a valid debug type" % value) self.add_option('--debug', action="callback", type="string", callback=opt_debug, nargs=1, dest="debug", metavar="TYPE", help="Print various types of debugging information: " "%s." % string.join(debug_options, ", ")) def opt_diskcheck(option, opt, value, parser): try: global diskcheck_option_set diskcheck_option_set = diskcheck_convert(value) SCons.Node.FS.set_diskcheck(diskcheck_option_set) except ValueError, e: raise OptionValueError("Warning: `%s' is not a valid diskcheck type" % e) self.add_option('--diskcheck', action="callback", type="string", callback=opt_diskcheck, dest='diskcheck', metavar="TYPE", help="Enable specific on-disk checks.") def opt_duplicate(option, opt, value, parser): if not value in SCons.Node.FS.Valid_Duplicates: raise OptionValueError("`%s' is not a valid duplication style." % value) parser.values.duplicate = value # Set the duplicate style right away so it can affect linking # of SConscript files. SCons.Node.FS.set_duplicate(value) self.add_option('--duplicate', action="callback", type="string", callback=opt_duplicate, nargs=1, dest="duplicate", help="Set the preferred duplication methods. Must be one of " + string.join(SCons.Node.FS.Valid_Duplicates, ", ")) self.add_option('-f', '--file', '--makefile', '--sconstruct', action="append", nargs=1, help="Read FILE as the top-level SConstruct file.") self.add_option('-h', '--help', action="store_true", default=0, dest="help_msg", help="Print defined help message, or this one.") self.add_option("-H", "--help-options", action="help", help="Print this message and exit.") self.add_option('-i', '--ignore-errors', action="store_true", default=0, dest='ignore_errors', help="Ignore errors from build actions.") self.add_option('-I', '--include-dir', action="append", dest='include_dir', metavar="DIR", help="Search DIR for imported Python modules.") self.add_option('--implicit-cache', action="store_true", dest='implicit_cache', help="Cache implicit dependencies") self.add_option('--implicit-deps-changed', action="store_true", default=0, dest='implicit_deps_changed', help="Ignore cached implicit dependencies.") self.add_option('--implicit-deps-unchanged', action="store_true", default=0, dest='implicit_deps_unchanged', help="Ignore changes in implicit dependencies.") def opt_j(option, opt, value, parser): value = int(value) parser.values.num_jobs = value self.add_option('-j', '--jobs', action="callback", type="int", callback=opt_j, metavar="N", help="Allow N jobs at once.") self.add_option('-k', '--keep-going', action="store_true", default=0, dest='keep_going', help="Keep going when a target can't be made.") self.add_option('--max-drift', type="int", action="store", dest='max_drift', metavar="N", help="Set maximum system clock drift to N seconds.") self.add_option('-n', '--no-exec', '--just-print', '--dry-run', '--recon', action="store_true", dest='noexec', default=0, help="Don't build; just print commands.") self.add_option('--profile', action="store", dest="profile_file", metavar="FILE", help="Profile SCons and put results in FILE.") self.add_option('-q', '--question', action="store_true", default=0, help="Don't build; exit status says if up to date.") self.add_option('-Q', dest='no_progress', action="store_true", default=0, help="Suppress \"Reading/Building\" progress messages.") self.add_option('--random', dest="random", action="store_true", default=0, help="Build dependencies in random order.") self.add_option('-s', '--silent', '--quiet', action="store_true", default=0, help="Don't print commands.") self.add_option('--taskmastertrace', action="store", dest="taskmastertrace_file", metavar="FILE", help="Trace Node evaluation to FILE.") self.add_option('-u', '--up', '--search-up', action="store_const", dest="climb_up", default=0, const=1, help="Search up directory tree for SConstruct, " "build targets at or below current directory.") self.add_option('-U', action="store_const", dest="climb_up", default=0, const=3, help="Search up directory tree for SConstruct, " "build Default() targets from local SConscript.") self.add_option("-v", "--version", action="version", help="Print the SCons version number and exit.") self.add_option('--warn', '--warning', nargs=1, action="store", metavar="WARNING-SPEC", help="Enable or disable warnings.") self.add_option('-Y', '--repository', nargs=1, action="append", help="Search REPOSITORY for source and target files.") self.add_option('-e', '--environment-overrides', action="callback", callback=opt_not_yet, # help="Environment variables override makefiles." help=SUPPRESS_HELP) self.add_option('-l', '--load-average', '--max-load', action="callback", callback=opt_not_yet, type="int", dest="load_average", # action="store", # help="Don't start multiple jobs unless load is below " # "LOAD-AVERAGE." # type="int", help=SUPPRESS_HELP) self.add_option('--list-derived', action="callback", callback=opt_not_yet, # help="Don't build; list files that would be built." help=SUPPRESS_HELP) self.add_option('--list-actions', action="callback", callback=opt_not_yet, # help="Don't build; list files and build actions." help=SUPPRESS_HELP) self.add_option('--list-where', action="callback", callback=opt_not_yet, # help="Don't build; list files and where defined." help=SUPPRESS_HELP) self.add_option('-o', '--old-file', '--assume-old', action="callback", callback=opt_not_yet, type="string", dest="old_file", # help = "Consider FILE to be old; don't rebuild it." help=SUPPRESS_HELP) self.add_option('--override', action="callback", dest="override", callback=opt_not_yet, type="string", # help="Override variables as specified in FILE." help=SUPPRESS_HELP) self.add_option('-p', action="callback", callback=opt_not_yet, # help="Print internal environments/objects." help=SUPPRESS_HELP) self.add_option('-r', '-R', '--no-builtin-rules', '--no-builtin-variables', action="callback", callback=opt_not_yet, # help="Clear default environments and variables." help=SUPPRESS_HELP) self.add_option('-w', '--print-directory', action="callback", callback=opt_not_yet, # help="Print the current directory." help=SUPPRESS_HELP) self.add_option('--no-print-directory', action="callback", callback=opt_not_yet, # help="Turn off -w, even if it was turned on implicitly." help=SUPPRESS_HELP) self.add_option('--write-filenames', action="callback", callback=opt_not_yet, type="string", dest="write_filenames", # help="Write all filenames examined into FILE." help=SUPPRESS_HELP) self.add_option('-W', '--what-if', '--new-file', '--assume-new', dest="new_file", action="callback", callback=opt_not_yet, type="string", # help="Consider FILE to be changed." help=SUPPRESS_HELP) self.add_option('--warn-undefined-variables', action="callback", callback=opt_not_yet, # help="Warn when an undefined variable is referenced." help=SUPPRESS_HELP) def parse_args(self, args=None, values=None): opt, arglist = OptionParser.parse_args(self, args, values) if opt.implicit_deps_changed or opt.implicit_deps_unchanged: opt.implicit_cache = 1 return opt, arglist class SConscriptSettableOptions: """This class wraps an OptParser instance and provides uniform access to options that can be either set on the command line or from a SConscript file. A value specified on the command line always overrides a value set in a SConscript file. Not all command line options are SConscript settable, and the ones that are must be explicitly added to settable dictionary and optionally validated and coerced in the set() method.""" def __init__(self, options): self.options = options # This dictionary stores the defaults for all the SConscript # settable options, as well as indicating which options # are SConscript settable. self.settable = {'num_jobs':1, 'max_drift':SCons.Node.FS.default_max_drift, 'implicit_cache':0, 'clean':0, 'duplicate':'hard-soft-copy', 'diskcheck':diskcheck_all} def get(self, name): if not self.settable.has_key(name): raise SCons.Errors.UserError, "This option is not settable from a SConscript file: %s"%name if hasattr(self.options, name) and getattr(self.options, name) is not None: return getattr(self.options, name) else: return self.settable[name] def set(self, name, value): if not self.settable.has_key(name): raise SCons.Errors.UserError, "This option is not settable from a SConscript file: %s"%name if name == 'num_jobs': try: value = int(value) if value < 1: raise ValueError except ValueError: raise SCons.Errors.UserError, "A positive integer is required: %s"%repr(value) elif name == 'max_drift': try: value = int(value) except ValueError: raise SCons.Errors.UserError, "An integer is required: %s"%repr(value) elif name == 'duplicate': try: value = str(value) except ValueError: raise SCons.Errors.UserError, "A string is required: %s"%repr(value) if not value in SCons.Node.FS.Valid_Duplicates: raise SCons.Errors.UserError, "Not a valid duplication style: %s" % value # Set the duplicate stye right away so it can affect linking # of SConscript files. SCons.Node.FS.set_duplicate(value) elif name == 'diskcheck': try: value = diskcheck_convert(value) except ValueError, v: raise SCons.Errors.UserError, "Not a valid diskcheck value: %s"%v if not diskcheck_option_set: SCons.Node.FS.set_diskcheck(value) self.settable[name] = value def _main(args, parser): global exit_status # Here's where everything really happens. # First order of business: set up default warnings and and then # handle the user's warning options, so we can warn about anything # that happens appropriately. default_warnings = [ SCons.Warnings.CorruptSConsignWarning, SCons.Warnings.DeprecatedWarning, SCons.Warnings.DuplicateEnvironmentWarning, SCons.Warnings.MissingSConscriptWarning, SCons.Warnings.NoMetaclassSupportWarning, SCons.Warnings.NoParallelSupportWarning, SCons.Warnings.MisleadingKeywordsWarning, ] for warning in default_warnings: SCons.Warnings.enableWarningClass(warning) SCons.Warnings._warningOut = _scons_internal_warning if options.warn: _setup_warn(options.warn) for warning_type, message in delayed_warnings: SCons.Warnings.warn(warning_type, message) # Next, we want to create the FS object that represents the outside # world's file system, as that's central to a lot of initialization. # To do this, however, we need to be in the directory from which we # want to start everything, which means first handling any relevant # options that might cause us to chdir somewhere (-C, -D, -U, -u). if options.directory: cdir = _create_path(options.directory) try: os.chdir(cdir) except OSError: sys.stderr.write("Could not change directory to %s\n" % cdir) # The SConstruct file may be in a repository, so initialize those # before we start the search up our path for one. global repositories if options.repository: repositories.extend(options.repository) target_top = None if options.climb_up: target_top = '.' # directory to prepend to targets script_dir = os.getcwd() # location of script while script_dir and not _SConstruct_exists(script_dir): script_dir, last_part = os.path.split(script_dir) if last_part: target_top = os.path.join(last_part, target_top) else: script_dir = '' if script_dir: display("scons: Entering directory `%s'" % script_dir) os.chdir(script_dir) # Now that we're in the top-level SConstruct directory, go ahead # and initialize the FS object that represents the file system, # and make it the build engine default. fs = SCons.Node.FS.default_fs = SCons.Node.FS.FS() for rep in repositories: fs.Repository(rep) # Now that we have the FS object, the next order of business is to # check for an SConstruct file (or other specified config file). # If there isn't one, we can bail before doing any more work. scripts = [] if options.file: scripts.extend(options.file) if not scripts: sfile = _SConstruct_exists() if sfile: scripts.append(sfile) if not scripts: if options.help_msg: # There's no SConstruct, but they specified -h. # Give them the options usage now, before we fail # trying to read a non-existent SConstruct file. parser.print_help() exit_status = 0 return raise SCons.Errors.UserError, "No SConstruct file found." if scripts[0] == "-": d = fs.getcwd() else: d = fs.File(scripts[0]).dir fs.set_SConstruct_dir(d) # Now that we have the FS object and it's intialized, set up (most # of) the rest of the options. global ssoptions ssoptions = SConscriptSettableOptions(options) _set_globals(options) SCons.Node.implicit_cache = options.implicit_cache SCons.Node.implicit_deps_changed = options.implicit_deps_changed SCons.Node.implicit_deps_unchanged = options.implicit_deps_unchanged if options.noexec: SCons.SConf.dryrun = 1 SCons.Action.execute_actions = None CleanTask.execute = CleanTask.show if options.question: SCons.SConf.dryrun = 1 SCons.SConf.SetCacheMode(options.config) SCons.SConf.SetProgressDisplay(progress_display) if options.no_progress or options.silent: progress_display.set_mode(0) if options.silent: display.set_mode(0) if options.silent: SCons.Action.print_actions = None if options.cache_debug: fs.CacheDebugEnable(options.cache_debug) if options.cache_disable: def disable(self): pass fs.CacheDir = disable if options.cache_force: fs.cache_force = 1 if options.cache_show: fs.cache_show = 1 if options.include_dir: sys.path = options.include_dir + sys.path # That should cover (most of) the options. Next, set up the variables # that hold command-line arguments, so the SConscript files that we # read and execute have access to them. targets = [] xmit_args = [] for a in args: if '=' in a: xmit_args.append(a) else: targets.append(a) SCons.Script._Add_Targets(targets) SCons.Script._Add_Arguments(xmit_args) class Unbuffered: def __init__(self, file): self.file = file def write(self, arg): self.file.write(arg) self.file.flush() def __getattr__(self, attr): return getattr(self.file, attr) sys.stdout = Unbuffered(sys.stdout) memory_stats.append('before reading SConscript files:') count_stats.append(('pre-', 'read')) progress_display("scons: Reading SConscript files ...") start_time = time.time() try: for script in scripts: SCons.Script._SConscript._SConscript(fs, script) except SCons.Errors.StopError, e: # We had problems reading an SConscript file, such as it # couldn't be copied in to the BuildDir. Since we're just # reading SConscript files and haven't started building # things yet, stop regardless of whether they used -i or -k # or anything else. sys.stderr.write("scons: *** %s Stop.\n" % e) exit_status = 2 sys.exit(exit_status) global sconscript_time sconscript_time = time.time() - start_time SCons.SConf.CreateConfigHBuilder(SCons.Defaults.DefaultEnvironment()) progress_display("scons: done reading SConscript files.") # Tell the Node.FS subsystem that we're all done reading the # SConscript files and calling Repository() and BuildDir() and the # like, so it can go ahead and start memoizing the string values of # file system nodes. SCons.Node.FS.save_strings(1) memory_stats.append('after reading SConscript files:') count_stats.append(('post-', 'read')) fs.chdir(fs.Top) if options.help_msg: help_text = SCons.Script.help_text if help_text is None: # They specified -h, but there was no Help() inside the # SConscript files. Give them the options usage. parser.print_help(sys.stdout) else: print help_text print "Use scons -H for help about command-line options." exit_status = 0 return # Now that we've read the SConscripts we can set the options # that are SConscript settable: SCons.Node.implicit_cache = ssoptions.get('implicit_cache') SCons.Node.FS.set_duplicate(ssoptions.get('duplicate')) fs.set_max_drift(ssoptions.get('max_drift')) lookup_top = None if targets or SCons.Script.BUILD_TARGETS != SCons.Script._build_plus_default: # They specified targets on the command line or modified # BUILD_TARGETS in the SConscript file(s), so if they used -u, # -U or -D, we have to look up targets relative to the top, # but we build whatever they specified. if target_top: lookup_top = fs.Dir(target_top) target_top = None targets = SCons.Script.BUILD_TARGETS else: # There are no targets specified on the command line, # so if they used -u, -U or -D, we may have to restrict # what actually gets built. d = None if target_top: if options.climb_up == 1: # -u, local directory and below target_top = fs.Dir(target_top) lookup_top = target_top elif options.climb_up == 2: # -D, all Default() targets target_top = None lookup_top = None elif options.climb_up == 3: # -U, local SConscript Default() targets target_top = fs.Dir(target_top) def check_dir(x, target_top=target_top): if hasattr(x, 'cwd') and not x.cwd is None: cwd = x.cwd.srcnode() return cwd == target_top else: # x doesn't have a cwd, so it's either not a target, # or not a file, so go ahead and keep it as a default # target and let the engine sort it out: return 1 d = filter(check_dir, SCons.Script.DEFAULT_TARGETS) SCons.Script.DEFAULT_TARGETS[:] = d target_top = None lookup_top = None targets = SCons.Script._Get_Default_Targets(d, fs) if not targets: sys.stderr.write("scons: *** No targets specified and no Default() targets found. Stop.\n") sys.exit(2) def Entry(x, ltop=lookup_top, ttop=target_top, fs=fs): if isinstance(x, SCons.Node.Node): node = x else: node = None # Why would ltop be None? Unfortunately this happens. if ltop == None: ltop = '' # Curdir becomes important when SCons is called with -u, -C, # or similar option that changes directory, and so the paths # of targets given on the command line need to be adjusted. curdir = os.path.join(os.getcwd(), str(ltop)) for lookup in SCons.Node.arg2nodes_lookups: node = lookup(x, curdir=curdir) if node != None: break if node is None: node = fs.Entry(x, directory=ltop, create=1) if ttop and not node.is_under(ttop): if isinstance(node, SCons.Node.FS.Dir) and ttop.is_under(node): node = ttop else: node = None return node nodes = filter(None, map(Entry, targets)) task_class = BuildTask # default action is to build targets opening_message = "Building targets ..." closing_message = "done building targets." if keep_going_on_error: failure_message = "done building targets (errors occurred during build)." else: failure_message = "building terminated because of errors." if options.question: task_class = QuestionTask try: if ssoptions.get('clean'): task_class = CleanTask opening_message = "Cleaning targets ..." closing_message = "done cleaning targets." if keep_going_on_error: closing_message = "done cleaning targets (errors occurred during clean)." else: failure_message = "cleaning terminated because of errors." except AttributeError: pass if options.random: def order(dependencies): """Randomize the dependencies.""" # This is cribbed from the implementation of # random.shuffle() in Python 2.X. d = dependencies for i in xrange(len(d)-1, 0, -1): j = int(random.random() * (i+1)) d[i], d[j] = d[j], d[i] return d else: def order(dependencies): """Leave the order of dependencies alone.""" return dependencies progress_display("scons: " + opening_message) if options.taskmastertrace_file == '-': tmtrace = sys.stdout elif options.taskmastertrace_file: tmtrace = open(options.taskmastertrace_file, 'wb') else: tmtrace = None taskmaster = SCons.Taskmaster.Taskmaster(nodes, task_class, order, tmtrace) nj = ssoptions.get('num_jobs') jobs = SCons.Job.Jobs(nj, taskmaster) if nj > 1 and jobs.num_jobs == 1: msg = "parallel builds are unsupported by this version of Python;\n" + \ "\tignoring -j or num_jobs option.\n" SCons.Warnings.warn(SCons.Warnings.NoParallelSupportWarning, msg) memory_stats.append('before building targets:') count_stats.append(('pre-', 'build')) try: jobs.run() finally: if exit_status: progress_display("scons: " + failure_message) else: progress_display("scons: " + closing_message) if not options.noexec: SCons.SConsign.write() memory_stats.append('after building targets:') count_stats.append(('post-', 'build')) def _exec_main(): sconsflags = os.environ.get('SCONSFLAGS', '') all_args = string.split(sconsflags) + sys.argv[1:] parser = OptParser() global options options, args = parser.parse_args(all_args) if type(options.debug) == type([]) and "pdb" in options.debug: import pdb pdb.Pdb().runcall(_main, args, parser) elif options.profile_file: from profile import Profile # Some versions of Python 2.4 shipped a profiler that had the # wrong 'c_exception' entry in its dispatch table. Make sure # we have the right one. (This may put an unnecessary entry # in the table in earlier versions of Python, but its presence # shouldn't hurt anything). try: dispatch = Profile.dispatch except AttributeError: pass else: dispatch['c_exception'] = Profile.trace_dispatch_return prof = Profile() try: prof.runcall(_main, args, parser) except SystemExit: pass prof.dump_stats(options.profile_file) else: _main(args, parser) def main(): global exit_status try: _exec_main() except SystemExit, s: if s: exit_status = s except KeyboardInterrupt: print "Build interrupted." sys.exit(2) except SyntaxError, e: _scons_syntax_error(e) except SCons.Errors.InternalError: _scons_internal_error() except SCons.Errors.UserError, e: _scons_user_error(e) except: # An exception here is likely a builtin Python exception Python # code in an SConscript file. Show them precisely what the # problem was and where it happened. SCons.Script._SConscript.SConscript_exception() sys.exit(2) memory_stats.print_stats() count_stats.print_stats() if print_objects: SCons.Debug.listLoggedInstances('*') #SCons.Debug.dumpLoggedInstances('*') if print_memoizer: SCons.Memoize.Dump("Memoizer (memory cache) hits and misses:") # Dump any development debug info that may have been enabled. # These are purely for internal debugging during development, so # there's no need to control them with --debug= options; they're # controlled by changing the source code. SCons.Debug.dump_caller_counts() SCons.Taskmaster.dump_stats() if print_time: total_time = time.time()-SCons.Script.start_time scons_time = total_time-sconscript_time-command_time print "Total build time: %f seconds"%total_time print "Total SConscript file execution time: %f seconds"%sconscript_time print "Total SCons execution time: %f seconds"%scons_time print "Total command execution time: %f seconds"%command_time sys.exit(exit_status)