--- /dev/null
+"""SCons.SConf
+
+Autoconf-like configuration support.
+"""
+
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
+#
+# 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__ = "src/engine/SCons/SConf.py 3842 2008/12/20 22:59:52 scons"
+
+import os
+import re
+import string
+import StringIO
+import sys
+import traceback
+import types
+
+import SCons.Action
+import SCons.Builder
+import SCons.Errors
+import SCons.Job
+import SCons.Node.FS
+import SCons.Taskmaster
+import SCons.Util
+import SCons.Warnings
+import SCons.Conftest
+
+from SCons.Debug import Trace
+
+# Turn off the Conftest error logging
+SCons.Conftest.LogInputFiles = 0
+SCons.Conftest.LogErrorMessages = 0
+
+# Set
+build_type = None
+build_types = ['clean', 'help']
+
+def SetBuildType(type):
+ global build_type
+ build_type = type
+
+# to be set, if we are in dry-run mode
+dryrun = 0
+
+AUTO=0 # use SCons dependency scanning for up-to-date checks
+FORCE=1 # force all tests to be rebuilt
+CACHE=2 # force all tests to be taken from cache (raise an error, if necessary)
+cache_mode = AUTO
+
+def SetCacheMode(mode):
+ """Set the Configure cache mode. mode must be one of "auto", "force",
+ or "cache"."""
+ global cache_mode
+ if mode == "auto":
+ cache_mode = AUTO
+ elif mode == "force":
+ cache_mode = FORCE
+ elif mode == "cache":
+ cache_mode = CACHE
+ else:
+ raise ValueError, "SCons.SConf.SetCacheMode: Unknown mode " + mode
+
+progress_display = SCons.Util.display # will be overwritten by SCons.Script
+def SetProgressDisplay(display):
+ """Set the progress display to use (called from SCons.Script)"""
+ global progress_display
+ progress_display = display
+
+SConfFS = None
+
+_ac_build_counter = 0 # incremented, whenever TryBuild is called
+_ac_config_logs = {} # all config.log files created in this build
+_ac_config_hs = {} # all config.h files created in this build
+sconf_global = None # current sconf object
+
+def _createConfigH(target, source, env):
+ t = open(str(target[0]), "w")
+ defname = re.sub('[^A-Za-z0-9_]', '_', string.upper(str(target[0])))
+ t.write("""#ifndef %(DEFNAME)s_SEEN
+#define %(DEFNAME)s_SEEN
+
+""" % {'DEFNAME' : defname})
+ t.write(source[0].get_contents())
+ t.write("""
+#endif /* %(DEFNAME)s_SEEN */
+""" % {'DEFNAME' : defname})
+ t.close()
+
+def _stringConfigH(target, source, env):
+ return "scons: Configure: creating " + str(target[0])
+
+def CreateConfigHBuilder(env):
+ """Called just before the building targets phase begins."""
+ if len(_ac_config_hs) == 0:
+ return
+ action = SCons.Action.Action(_createConfigH,
+ _stringConfigH)
+ sconfigHBld = SCons.Builder.Builder(action=action)
+ env.Append( BUILDERS={'SConfigHBuilder':sconfigHBld} )
+ for k in _ac_config_hs.keys():
+ env.SConfigHBuilder(k, env.Value(_ac_config_hs[k]))
+
+class SConfWarning(SCons.Warnings.Warning):
+ pass
+SCons.Warnings.enableWarningClass(SConfWarning)
+
+# some error definitions
+class SConfError(SCons.Errors.UserError):
+ def __init__(self,msg):
+ SCons.Errors.UserError.__init__(self,msg)
+
+class ConfigureDryRunError(SConfError):
+ """Raised when a file or directory needs to be updated during a Configure
+ process, but the user requested a dry-run"""
+ def __init__(self,target):
+ if not isinstance(target, SCons.Node.FS.File):
+ msg = 'Cannot create configure directory "%s" within a dry-run.' % str(target)
+ else:
+ msg = 'Cannot update configure test "%s" within a dry-run.' % str(target)
+ SConfError.__init__(self,msg)
+
+class ConfigureCacheError(SConfError):
+ """Raised when a use explicitely requested the cache feature, but the test
+ is run the first time."""
+ def __init__(self,target):
+ SConfError.__init__(self, '"%s" is not yet built and cache is forced.' % str(target))
+
+# define actions for building text files
+def _createSource( target, source, env ):
+ fd = open(str(target[0]), "w")
+ fd.write(source[0].get_contents())
+ fd.close()
+def _stringSource( target, source, env ):
+ return (str(target[0]) + ' <-\n |' +
+ string.replace( source[0].get_contents(),
+ '\n', "\n |" ) )
+
+# python 2.2 introduces types.BooleanType
+BooleanTypes = [types.IntType]
+if hasattr(types, 'BooleanType'): BooleanTypes.append(types.BooleanType)
+
+class SConfBuildInfo(SCons.Node.FS.FileBuildInfo):
+ """
+ Special build info for targets of configure tests. Additional members
+ are result (did the builder succeed last time?) and string, which
+ contains messages of the original build phase.
+ """
+ result = None # -> 0/None -> no error, != 0 error
+ string = None # the stdout / stderr output when building the target
+
+ def set_build_result(self, result, string):
+ self.result = result
+ self.string = string
+
+
+class Streamer:
+ """
+ 'Sniffer' for a file-like writable object. Similar to the unix tool tee.
+ """
+ def __init__(self, orig):
+ self.orig = orig
+ self.s = StringIO.StringIO()
+
+ def write(self, str):
+ if self.orig:
+ self.orig.write(str)
+ self.s.write(str)
+
+ def writelines(self, lines):
+ for l in lines:
+ self.write(l + '\n')
+
+ def getvalue(self):
+ """
+ Return everything written to orig since the Streamer was created.
+ """
+ return self.s.getvalue()
+
+ def flush(self):
+ if self.orig:
+ self.orig.flush()
+ self.s.flush()
+
+
+class SConfBuildTask(SCons.Taskmaster.Task):
+ """
+ This is almost the same as SCons.Script.BuildTask. Handles SConfErrors
+ correctly and knows about the current cache_mode.
+ """
+ def display(self, message):
+ if sconf_global.logstream:
+ sconf_global.logstream.write("scons: Configure: " + message + "\n")
+
+ def display_cached_string(self, bi):
+ """
+ Logs the original builder messages, given the SConfBuildInfo instance
+ bi.
+ """
+ if not isinstance(bi, SConfBuildInfo):
+ SCons.Warnings.warn(SConfWarning,
+ "The stored build information has an unexpected class: %s" % bi.__class__)
+ else:
+ self.display("The original builder output was:\n" +
+ string.replace(" |" + str(bi.string),
+ "\n", "\n |"))
+
+ def failed(self):
+ # check, if the reason was a ConfigureDryRunError or a
+ # ConfigureCacheError and if yes, reraise the exception
+ exc_type = self.exc_info()[0]
+ if issubclass(exc_type, SConfError):
+ raise
+ elif issubclass(exc_type, SCons.Errors.BuildError):
+ # we ignore Build Errors (occurs, when a test doesn't pass)
+ # Clear the exception to prevent the contained traceback
+ # to build a reference cycle.
+ self.exc_clear()
+ else:
+ self.display('Caught exception while building "%s":\n' %
+ self.targets[0])
+ try:
+ excepthook = sys.excepthook
+ except AttributeError:
+ # Earlier versions of Python don't have sys.excepthook...
+ def excepthook(type, value, tb):
+ traceback.print_tb(tb)
+ print type, value
+ apply(excepthook, self.exc_info())
+ return SCons.Taskmaster.Task.failed(self)
+
+ def collect_node_states(self):
+ # returns (is_up_to_date, cached_error, cachable)
+ # where is_up_to_date is 1, if the node(s) are up_to_date
+ # cached_error is 1, if the node(s) are up_to_date, but the
+ # build will fail
+ # cachable is 0, if some nodes are not in our cache
+ T = 0
+ changed = False
+ cached_error = False
+ cachable = True
+ for t in self.targets:
+ if T: Trace('%s' % (t))
+ bi = t.get_stored_info().binfo
+ if isinstance(bi, SConfBuildInfo):
+ if T: Trace(': SConfBuildInfo')
+ if cache_mode == CACHE:
+ t.set_state(SCons.Node.up_to_date)
+ if T: Trace(': set_state(up_to-date)')
+ else:
+ if T: Trace(': get_state() %s' % t.get_state())
+ if T: Trace(': changed() %s' % t.changed())
+ if (t.get_state() != SCons.Node.up_to_date and t.changed()):
+ changed = True
+ if T: Trace(': changed %s' % changed)
+ cached_error = cached_error or bi.result
+ else:
+ if T: Trace(': else')
+ # the node hasn't been built in a SConf context or doesn't
+ # exist
+ cachable = False
+ changed = ( t.get_state() != SCons.Node.up_to_date )
+ if T: Trace(': changed %s' % changed)
+ if T: Trace('\n')
+ return (not changed, cached_error, cachable)
+
+ def execute(self):
+ if not self.targets[0].has_builder():
+ return
+
+ sconf = sconf_global
+
+ is_up_to_date, cached_error, cachable = self.collect_node_states()
+
+ if cache_mode == CACHE and not cachable:
+ raise ConfigureCacheError(self.targets[0])
+ elif cache_mode == FORCE:
+ is_up_to_date = 0
+
+ if cached_error and is_up_to_date:
+ self.display("Building \"%s\" failed in a previous run and all "
+ "its sources are up to date." % str(self.targets[0]))
+ binfo = self.targets[0].get_stored_info().binfo
+ self.display_cached_string(binfo)
+ raise SCons.Errors.BuildError # will be 'caught' in self.failed
+ elif is_up_to_date:
+ self.display("\"%s\" is up to date." % str(self.targets[0]))
+ binfo = self.targets[0].get_stored_info().binfo
+ self.display_cached_string(binfo)
+ elif dryrun:
+ raise ConfigureDryRunError(self.targets[0])
+ else:
+ # note stdout and stderr are the same here
+ s = sys.stdout = sys.stderr = Streamer(sys.stdout)
+ try:
+ env = self.targets[0].get_build_env()
+ env['PSTDOUT'] = env['PSTDERR'] = s
+ try:
+ sconf.cached = 0
+ self.targets[0].build()
+ finally:
+ sys.stdout = sys.stderr = env['PSTDOUT'] = \
+ env['PSTDERR'] = sconf.logstream
+ except KeyboardInterrupt:
+ raise
+ except SystemExit:
+ exc_value = sys.exc_info()[1]
+ raise SCons.Errors.ExplicitExit(self.targets[0],exc_value.code)
+ except Exception, e:
+ for t in self.targets:
+ binfo = t.get_binfo()
+ binfo.__class__ = SConfBuildInfo
+ binfo.set_build_result(1, s.getvalue())
+ sconsign_entry = SCons.SConsign.SConsignEntry()
+ sconsign_entry.binfo = binfo
+ #sconsign_entry.ninfo = self.get_ninfo()
+ # We'd like to do this as follows:
+ # t.store_info(binfo)
+ # However, we need to store it as an SConfBuildInfo
+ # object, and store_info() will turn it into a
+ # regular FileNodeInfo if the target is itself a
+ # regular File.
+ sconsign = t.dir.sconsign()
+ sconsign.set_entry(t.name, sconsign_entry)
+ sconsign.merge()
+ raise e
+ else:
+ for t in self.targets:
+ binfo = t.get_binfo()
+ binfo.__class__ = SConfBuildInfo
+ binfo.set_build_result(0, s.getvalue())
+ sconsign_entry = SCons.SConsign.SConsignEntry()
+ sconsign_entry.binfo = binfo
+ #sconsign_entry.ninfo = self.get_ninfo()
+ # We'd like to do this as follows:
+ # t.store_info(binfo)
+ # However, we need to store it as an SConfBuildInfo
+ # object, and store_info() will turn it into a
+ # regular FileNodeInfo if the target is itself a
+ # regular File.
+ sconsign = t.dir.sconsign()
+ sconsign.set_entry(t.name, sconsign_entry)
+ sconsign.merge()
+
+class SConfBase:
+ """This is simply a class to represent a configure context. After
+ creating a SConf object, you can call any tests. After finished with your
+ tests, be sure to call the Finish() method, which returns the modified
+ environment.
+ Some words about caching: In most cases, it is not necessary to cache
+ Test results explicitely. Instead, we use the scons dependency checking
+ mechanism. For example, if one wants to compile a test program
+ (SConf.TryLink), the compiler is only called, if the program dependencies
+ have changed. However, if the program could not be compiled in a former
+ SConf run, we need to explicitely cache this error.
+ """
+
+ def __init__(self, env, custom_tests = {}, conf_dir='$CONFIGUREDIR',
+ log_file='$CONFIGURELOG', config_h = None, _depth = 0):
+ """Constructor. Pass additional tests in the custom_tests-dictinary,
+ e.g. custom_tests={'CheckPrivate':MyPrivateTest}, where MyPrivateTest
+ defines a custom test.
+ Note also the conf_dir and log_file arguments (you may want to
+ build tests in the VariantDir, not in the SourceDir)
+ """
+ global SConfFS
+ if not SConfFS:
+ SConfFS = SCons.Node.FS.default_fs or \
+ SCons.Node.FS.FS(env.fs.pathTop)
+ if not sconf_global is None:
+ raise (SCons.Errors.UserError,
+ "Only one SConf object may be active at one time")
+ self.env = env
+ if log_file != None:
+ log_file = SConfFS.File(env.subst(log_file))
+ self.logfile = log_file
+ self.logstream = None
+ self.lastTarget = None
+ self.depth = _depth
+ self.cached = 0 # will be set, if all test results are cached
+
+ # add default tests
+ default_tests = {
+ 'CheckCC' : CheckCC,
+ 'CheckCXX' : CheckCXX,
+ 'CheckSHCC' : CheckSHCC,
+ 'CheckSHCXX' : CheckSHCXX,
+ 'CheckFunc' : CheckFunc,
+ 'CheckType' : CheckType,
+ 'CheckTypeSize' : CheckTypeSize,
+ 'CheckDeclaration' : CheckDeclaration,
+ 'CheckHeader' : CheckHeader,
+ 'CheckCHeader' : CheckCHeader,
+ 'CheckCXXHeader' : CheckCXXHeader,
+ 'CheckLib' : CheckLib,
+ 'CheckLibWithHeader' : CheckLibWithHeader,
+ }
+ self.AddTests(default_tests)
+ self.AddTests(custom_tests)
+ self.confdir = SConfFS.Dir(env.subst(conf_dir))
+ if not config_h is None:
+ config_h = SConfFS.File(config_h)
+ self.config_h = config_h
+ self._startup()
+
+ def Finish(self):
+ """Call this method after finished with your tests:
+ env = sconf.Finish()
+ """
+ self._shutdown()
+ return self.env
+
+ def Define(self, name, value = None, comment = None):
+ """
+ Define a pre processor symbol name, with the optional given value in the
+ current config header.
+
+ If value is None (default), then #define name is written. If value is not
+ none, then #define name value is written.
+
+ comment is a string which will be put as a C comment in the
+ header, to explain the meaning of the value (appropriate C comments /* and
+ */ will be put automatically."""
+ lines = []
+ if comment:
+ comment_str = "/* %s */" % comment
+ lines.append(comment_str)
+
+ if value is not None:
+ define_str = "#define %s %s" % (name, value)
+ else:
+ define_str = "#define %s" % name
+ lines.append(define_str)
+ lines.append('')
+
+ self.config_h_text = self.config_h_text + string.join(lines, '\n')
+
+ def BuildNodes(self, nodes):
+ """
+ Tries to build the given nodes immediately. Returns 1 on success,
+ 0 on error.
+ """
+ if self.logstream != None:
+ # override stdout / stderr to write in log file
+ oldStdout = sys.stdout
+ sys.stdout = self.logstream
+ oldStderr = sys.stderr
+ sys.stderr = self.logstream
+
+ # the engine assumes the current path is the SConstruct directory ...
+ old_fs_dir = SConfFS.getcwd()
+ old_os_dir = os.getcwd()
+ SConfFS.chdir(SConfFS.Top, change_os_dir=1)
+
+ # Because we take responsibility here for writing out our
+ # own .sconsign info (see SConfBuildTask.execute(), above),
+ # we override the store_info() method with a null place-holder
+ # so we really control how it gets written.
+ for n in nodes:
+ n.store_info = n.do_not_store_info
+
+ ret = 1
+
+ try:
+ # ToDo: use user options for calc
+ save_max_drift = SConfFS.get_max_drift()
+ SConfFS.set_max_drift(0)
+ tm = SCons.Taskmaster.Taskmaster(nodes, SConfBuildTask)
+ # we don't want to build tests in parallel
+ jobs = SCons.Job.Jobs(1, tm )
+ jobs.run()
+ for n in nodes:
+ state = n.get_state()
+ if (state != SCons.Node.executed and
+ state != SCons.Node.up_to_date):
+ # the node could not be built. we return 0 in this case
+ ret = 0
+ finally:
+ SConfFS.set_max_drift(save_max_drift)
+ os.chdir(old_os_dir)
+ SConfFS.chdir(old_fs_dir, change_os_dir=0)
+ if self.logstream != None:
+ # restore stdout / stderr
+ sys.stdout = oldStdout
+ sys.stderr = oldStderr
+ return ret
+
+ def pspawn_wrapper(self, sh, escape, cmd, args, env):
+ """Wrapper function for handling piped spawns.
+
+ This looks to the calling interface (in Action.py) like a "normal"
+ spawn, but associates the call with the PSPAWN variable from
+ the construction environment and with the streams to which we
+ want the output logged. This gets slid into the construction
+ environment as the SPAWN variable so Action.py doesn't have to
+ know or care whether it's spawning a piped command or not.
+ """
+ return self.pspawn(sh, escape, cmd, args, env, self.logstream, self.logstream)
+
+
+ def TryBuild(self, builder, text = None, extension = ""):
+ """Low level TryBuild implementation. Normally you don't need to
+ call that - you can use TryCompile / TryLink / TryRun instead
+ """
+ global _ac_build_counter
+
+ # Make sure we have a PSPAWN value, and save the current
+ # SPAWN value.
+ try:
+ self.pspawn = self.env['PSPAWN']
+ except KeyError:
+ raise SCons.Errors.UserError('Missing PSPAWN construction variable.')
+ try:
+ save_spawn = self.env['SPAWN']
+ except KeyError:
+ raise SCons.Errors.UserError('Missing SPAWN construction variable.')
+
+ nodesToBeBuilt = []
+
+ f = "conftest_" + str(_ac_build_counter)
+ pref = self.env.subst( builder.builder.prefix )
+ suff = self.env.subst( builder.builder.suffix )
+ target = self.confdir.File(pref + f + suff)
+
+ try:
+ # Slide our wrapper into the construction environment as
+ # the SPAWN function.
+ self.env['SPAWN'] = self.pspawn_wrapper
+ sourcetext = self.env.Value(text)
+
+ if text != None:
+ textFile = self.confdir.File(f + extension)
+ textFileNode = self.env.SConfSourceBuilder(target=textFile,
+ source=sourcetext)
+ nodesToBeBuilt.extend(textFileNode)
+ source = textFileNode
+ else:
+ source = None
+
+ nodes = builder(target = target, source = source)
+ if not SCons.Util.is_List(nodes):
+ nodes = [nodes]
+ nodesToBeBuilt.extend(nodes)
+ result = self.BuildNodes(nodesToBeBuilt)
+
+ finally:
+ self.env['SPAWN'] = save_spawn
+
+ _ac_build_counter = _ac_build_counter + 1
+ if result:
+ self.lastTarget = nodes[0]
+ else:
+ self.lastTarget = None
+
+ return result
+
+ def TryAction(self, action, text = None, extension = ""):
+ """Tries to execute the given action with optional source file
+ contents <text> and optional source file extension <extension>,
+ Returns the status (0 : failed, 1 : ok) and the contents of the
+ output file.
+ """
+ builder = SCons.Builder.Builder(action=action)
+ self.env.Append( BUILDERS = {'SConfActionBuilder' : builder} )
+ ok = self.TryBuild(self.env.SConfActionBuilder, text, extension)
+ del self.env['BUILDERS']['SConfActionBuilder']
+ if ok:
+ outputStr = self.lastTarget.get_contents()
+ return (1, outputStr)
+ return (0, "")
+
+ def TryCompile( self, text, extension):
+ """Compiles the program given in text to an env.Object, using extension
+ as file extension (e.g. '.c'). Returns 1, if compilation was
+ successful, 0 otherwise. The target is saved in self.lastTarget (for
+ further processing).
+ """
+ return self.TryBuild(self.env.Object, text, extension)
+
+ def TryLink( self, text, extension ):
+ """Compiles the program given in text to an executable env.Program,
+ using extension as file extension (e.g. '.c'). Returns 1, if
+ compilation was successful, 0 otherwise. The target is saved in
+ self.lastTarget (for further processing).
+ """
+ return self.TryBuild(self.env.Program, text, extension )
+
+ def TryRun(self, text, extension ):
+ """Compiles and runs the program given in text, using extension
+ as file extension (e.g. '.c'). Returns (1, outputStr) on success,
+ (0, '') otherwise. The target (a file containing the program's stdout)
+ is saved in self.lastTarget (for further processing).
+ """
+ ok = self.TryLink(text, extension)
+ if( ok ):
+ prog = self.lastTarget
+ pname = str(prog)
+ output = SConfFS.File(pname+'.out')
+ node = self.env.Command(output, prog, [ [ pname, ">", "${TARGET}"] ])
+ ok = self.BuildNodes(node)
+ if ok:
+ outputStr = output.get_contents()
+ return( 1, outputStr)
+ return (0, "")
+
+ class TestWrapper:
+ """A wrapper around Tests (to ensure sanity)"""
+ def __init__(self, test, sconf):
+ self.test = test
+ self.sconf = sconf
+ def __call__(self, *args, **kw):
+ if not self.sconf.active:
+ raise (SCons.Errors.UserError,
+ "Test called after sconf.Finish()")
+ context = CheckContext(self.sconf)
+ ret = apply(self.test, (context,) + args, kw)
+ if not self.sconf.config_h is None:
+ self.sconf.config_h_text = self.sconf.config_h_text + context.config_h
+ context.Result("error: no result")
+ return ret
+
+ def AddTest(self, test_name, test_instance):
+ """Adds test_class to this SConf instance. It can be called with
+ self.test_name(...)"""
+ setattr(self, test_name, SConfBase.TestWrapper(test_instance, self))
+
+ def AddTests(self, tests):
+ """Adds all the tests given in the tests dictionary to this SConf
+ instance
+ """
+ for name in tests.keys():
+ self.AddTest(name, tests[name])
+
+ def _createDir( self, node ):
+ dirName = str(node)
+ if dryrun:
+ if not os.path.isdir( dirName ):
+ raise ConfigureDryRunError(dirName)
+ else:
+ if not os.path.isdir( dirName ):
+ os.makedirs( dirName )
+ node._exists = 1
+
+ def _startup(self):
+ """Private method. Set up logstream, and set the environment
+ variables necessary for a piped build
+ """
+ global _ac_config_logs
+ global sconf_global
+ global SConfFS
+
+ self.lastEnvFs = self.env.fs
+ self.env.fs = SConfFS
+ self._createDir(self.confdir)
+ self.confdir.up().add_ignore( [self.confdir] )
+
+ if self.logfile != None and not dryrun:
+ # truncate logfile, if SConf.Configure is called for the first time
+ # in a build
+ if _ac_config_logs.has_key(self.logfile):
+ log_mode = "a"
+ else:
+ _ac_config_logs[self.logfile] = None
+ log_mode = "w"
+ fp = open(str(self.logfile), log_mode)
+ self.logstream = SCons.Util.Unbuffered(fp)
+ # logfile may stay in a build directory, so we tell
+ # the build system not to override it with a eventually
+ # existing file with the same name in the source directory
+ self.logfile.dir.add_ignore( [self.logfile] )
+
+ tb = traceback.extract_stack()[-3-self.depth]
+ old_fs_dir = SConfFS.getcwd()
+ SConfFS.chdir(SConfFS.Top, change_os_dir=0)
+ self.logstream.write('file %s,line %d:\n\tConfigure(confdir = %s)\n' %
+ (tb[0], tb[1], str(self.confdir)) )
+ SConfFS.chdir(old_fs_dir)
+ else:
+ self.logstream = None
+ # we use a special builder to create source files from TEXT
+ action = SCons.Action.Action(_createSource,
+ _stringSource)
+ sconfSrcBld = SCons.Builder.Builder(action=action)
+ self.env.Append( BUILDERS={'SConfSourceBuilder':sconfSrcBld} )
+ self.config_h_text = _ac_config_hs.get(self.config_h, "")
+ self.active = 1
+ # only one SConf instance should be active at a time ...
+ sconf_global = self
+
+ def _shutdown(self):
+ """Private method. Reset to non-piped spawn"""
+ global sconf_global, _ac_config_hs
+
+ if not self.active:
+ raise SCons.Errors.UserError, "Finish may be called only once!"
+ if self.logstream != None and not dryrun:
+ self.logstream.write("\n")
+ self.logstream.close()
+ self.logstream = None
+ # remove the SConfSourceBuilder from the environment
+ blds = self.env['BUILDERS']
+ del blds['SConfSourceBuilder']
+ self.env.Replace( BUILDERS=blds )
+ self.active = 0
+ sconf_global = None
+ if not self.config_h is None:
+ _ac_config_hs[self.config_h] = self.config_h_text
+ self.env.fs = self.lastEnvFs
+
+class CheckContext:
+ """Provides a context for configure tests. Defines how a test writes to the
+ screen and log file.
+
+ A typical test is just a callable with an instance of CheckContext as
+ first argument:
+
+ def CheckCustom(context, ...)
+ context.Message('Checking my weird test ... ')
+ ret = myWeirdTestFunction(...)
+ context.Result(ret)
+
+ Often, myWeirdTestFunction will be one of
+ context.TryCompile/context.TryLink/context.TryRun. The results of
+ those are cached, for they are only rebuild, if the dependencies have
+ changed.
+ """
+
+ def __init__(self, sconf):
+ """Constructor. Pass the corresponding SConf instance."""
+ self.sconf = sconf
+ self.did_show_result = 0
+
+ # for Conftest.py:
+ self.vardict = {}
+ self.havedict = {}
+ self.headerfilename = None
+ self.config_h = "" # config_h text will be stored here
+ # we don't regenerate the config.h file after each test. That means,
+ # that tests won't be able to include the config.h file, and so
+ # they can't do an #ifdef HAVE_XXX_H. This shouldn't be a major
+ # issue, though. If it turns out, that we need to include config.h
+ # in tests, we must ensure, that the dependencies are worked out
+ # correctly. Note that we can't use Conftest.py's support for config.h,
+ # cause we will need to specify a builder for the config.h file ...
+
+ def Message(self, text):
+ """Inform about what we are doing right now, e.g.
+ 'Checking for SOMETHING ... '
+ """
+ self.Display(text)
+ self.sconf.cached = 1
+ self.did_show_result = 0
+
+ def Result(self, res):
+ """Inform about the result of the test. res may be an integer or a
+ string. In case of an integer, the written text will be 'ok' or
+ 'failed'.
+ The result is only displayed when self.did_show_result is not set.
+ """
+ if type(res) in BooleanTypes:
+ if res:
+ text = "yes"
+ else:
+ text = "no"
+ elif type(res) == types.StringType:
+ text = res
+ else:
+ raise TypeError, "Expected string, int or bool, got " + str(type(res))
+
+ if self.did_show_result == 0:
+ # Didn't show result yet, do it now.
+ self.Display(text + "\n")
+ self.did_show_result = 1
+
+ def TryBuild(self, *args, **kw):
+ return apply(self.sconf.TryBuild, args, kw)
+
+ def TryAction(self, *args, **kw):
+ return apply(self.sconf.TryAction, args, kw)
+
+ def TryCompile(self, *args, **kw):
+ return apply(self.sconf.TryCompile, args, kw)
+
+ def TryLink(self, *args, **kw):
+ return apply(self.sconf.TryLink, args, kw)
+
+ def TryRun(self, *args, **kw):
+ return apply(self.sconf.TryRun, args, kw)
+
+ def __getattr__( self, attr ):
+ if( attr == 'env' ):
+ return self.sconf.env
+ elif( attr == 'lastTarget' ):
+ return self.sconf.lastTarget
+ else:
+ raise AttributeError, "CheckContext instance has no attribute '%s'" % attr
+
+ #### Stuff used by Conftest.py (look there for explanations).
+
+ def BuildProg(self, text, ext):
+ self.sconf.cached = 1
+ # TODO: should use self.vardict for $CC, $CPPFLAGS, etc.
+ return not self.TryBuild(self.env.Program, text, ext)
+
+ def CompileProg(self, text, ext):
+ self.sconf.cached = 1
+ # TODO: should use self.vardict for $CC, $CPPFLAGS, etc.
+ return not self.TryBuild(self.env.Object, text, ext)
+
+ def CompileSharedObject(self, text, ext):
+ self.sconf.cached = 1
+ # TODO: should use self.vardict for $SHCC, $CPPFLAGS, etc.
+ return not self.TryBuild(self.env.SharedObject, text, ext)
+
+ def RunProg(self, text, ext):
+ self.sconf.cached = 1
+ # TODO: should use self.vardict for $CC, $CPPFLAGS, etc.
+ st, out = self.TryRun(text, ext)
+ return not st, out
+
+ def AppendLIBS(self, lib_name_list):
+ oldLIBS = self.env.get( 'LIBS', [] )
+ self.env.Append(LIBS = lib_name_list)
+ return oldLIBS
+
+ def SetLIBS(self, val):
+ oldLIBS = self.env.get( 'LIBS', [] )
+ self.env.Replace(LIBS = val)
+ return oldLIBS
+
+ def Display(self, msg):
+ if self.sconf.cached:
+ # We assume that Display is called twice for each test here
+ # once for the Checking for ... message and once for the result.
+ # The self.sconf.cached flag can only be set between those calls
+ msg = "(cached) " + msg
+ self.sconf.cached = 0
+ progress_display(msg, append_newline=0)
+ self.Log("scons: Configure: " + msg + "\n")
+
+ def Log(self, msg):
+ if self.sconf.logstream != None:
+ self.sconf.logstream.write(msg)
+
+ #### End of stuff used by Conftest.py.
+
+
+def SConf(*args, **kw):
+ if kw.get(build_type, True):
+ kw['_depth'] = kw.get('_depth', 0) + 1
+ for bt in build_types:
+ try:
+ del kw[bt]
+ except KeyError:
+ pass
+ return apply(SConfBase, args, kw)
+ else:
+ return SCons.Util.Null()
+
+
+def CheckFunc(context, function_name, header = None, language = None):
+ res = SCons.Conftest.CheckFunc(context, function_name, header = header, language = language)
+ context.did_show_result = 1
+ return not res
+
+def CheckType(context, type_name, includes = "", language = None):
+ res = SCons.Conftest.CheckType(context, type_name,
+ header = includes, language = language)
+ context.did_show_result = 1
+ return not res
+
+def CheckTypeSize(context, type_name, includes = "", language = None, expect = None):
+ res = SCons.Conftest.CheckTypeSize(context, type_name,
+ header = includes, language = language,
+ expect = expect)
+ context.did_show_result = 1
+ return res
+
+def CheckDeclaration(context, declaration, includes = "", language = None):
+ res = SCons.Conftest.CheckDeclaration(context, declaration,
+ includes = includes,
+ language = language)
+ context.did_show_result = 1
+ return not res
+
+def createIncludesFromHeaders(headers, leaveLast, include_quotes = '""'):
+ # used by CheckHeader and CheckLibWithHeader to produce C - #include
+ # statements from the specified header (list)
+ if not SCons.Util.is_List(headers):
+ headers = [headers]
+ l = []
+ if leaveLast:
+ lastHeader = headers[-1]
+ headers = headers[:-1]
+ else:
+ lastHeader = None
+ for s in headers:
+ l.append("#include %s%s%s\n"
+ % (include_quotes[0], s, include_quotes[1]))
+ return string.join(l, ''), lastHeader
+
+def CheckHeader(context, header, include_quotes = '<>', language = None):
+ """
+ A test for a C or C++ header file.
+ """
+ prog_prefix, hdr_to_check = \
+ createIncludesFromHeaders(header, 1, include_quotes)
+ res = SCons.Conftest.CheckHeader(context, hdr_to_check, prog_prefix,
+ language = language,
+ include_quotes = include_quotes)
+ context.did_show_result = 1
+ return not res
+
+def CheckCC(context):
+ res = SCons.Conftest.CheckCC(context)
+ return not res
+
+def CheckCXX(context):
+ res = SCons.Conftest.CheckCXX(context)
+ return not res
+
+def CheckSHCC(context):
+ res = SCons.Conftest.CheckSHCC(context)
+ return not res
+
+def CheckSHCXX(context):
+ res = SCons.Conftest.CheckSHCXX(context)
+ return not res
+
+# Bram: Make this function obsolete? CheckHeader() is more generic.
+
+def CheckCHeader(context, header, include_quotes = '""'):
+ """
+ A test for a C header file.
+ """
+ return CheckHeader(context, header, include_quotes, language = "C")
+
+
+# Bram: Make this function obsolete? CheckHeader() is more generic.
+
+def CheckCXXHeader(context, header, include_quotes = '""'):
+ """
+ A test for a C++ header file.
+ """
+ return CheckHeader(context, header, include_quotes, language = "C++")
+
+
+def CheckLib(context, library = None, symbol = "main",
+ header = None, language = None, autoadd = 1):
+ """
+ A test for a library. See also CheckLibWithHeader.
+ Note that library may also be None to test whether the given symbol
+ compiles without flags.
+ """
+
+ if library == []:
+ library = [None]
+
+ if not SCons.Util.is_List(library):
+ library = [library]
+
+ # ToDo: accept path for the library
+ res = SCons.Conftest.CheckLib(context, library, symbol, header = header,
+ language = language, autoadd = autoadd)
+ context.did_show_result = 1
+ return not res
+
+# XXX
+# Bram: Can only include one header and can't use #ifdef HAVE_HEADER_H.
+
+def CheckLibWithHeader(context, libs, header, language,
+ call = None, autoadd = 1):
+ # ToDo: accept path for library. Support system header files.
+ """
+ Another (more sophisticated) test for a library.
+ Checks, if library and header is available for language (may be 'C'
+ or 'CXX'). Call maybe be a valid expression _with_ a trailing ';'.
+ As in CheckLib, we support library=None, to test if the call compiles
+ without extra link flags.
+ """
+ prog_prefix, dummy = \
+ createIncludesFromHeaders(header, 0)
+ if libs == []:
+ libs = [None]
+
+ if not SCons.Util.is_List(libs):
+ libs = [libs]
+
+ res = SCons.Conftest.CheckLib(context, libs, None, prog_prefix,
+ call = call, language = language, autoadd = autoadd)
+ context.did_show_result = 1
+ return not res
projects / senf.git / blobdiff