+def add_magic_target_components(parser, project, opts):
+ """add_magic_target_components(project, opts) -> None
+
+ Add the "magic" target based components to the project, which can only be
+ determined based on the target configuration options.
+
+ This currently is responsible for populating the required_libraries list of
+ the "Native", "NativeCodeGen", and "Engine" components.
+ """
+
+ # Determine the available targets.
+ available_targets = dict((ci.name,ci)
+ for ci in project.component_infos
+ if ci.type_name == 'TargetGroup')
+
+ # Find the configured native target.
+
+ # We handle a few special cases of target names here for historical
+ # reasons, as these are the names configure currently comes up with.
+ native_target_name = { 'x86' : 'X86',
+ 'x86_64' : 'X86',
+ 'Unknown' : None }.get(opts.native_target,
+ opts.native_target)
+ if native_target_name is None:
+ native_target = None
+ else:
+ native_target = available_targets.get(native_target_name)
+ if native_target is None:
+ parser.error("invalid native target: %r (not in project)" % (
+ opts.native_target,))
+ if native_target.type_name != 'TargetGroup':
+ parser.error("invalid native target: %r (not a target)" % (
+ opts.native_target,))
+
+ # Find the list of targets to enable.
+ if opts.enable_targets is None:
+ enable_targets = available_targets.values()
+ else:
+ enable_targets = []
+ for name in opts.enable_targets.split():
+ target = available_targets.get(name)
+ if target is None:
+ parser.error("invalid target to enable: %r (not in project)" % (
+ name,))
+ if target.type_name != 'TargetGroup':
+ parser.error("invalid target to enable: %r (not a target)" % (
+ name,))
+ enable_targets.append(target)
+
+ # Find the special library groups we are going to populate. We enforce that
+ # these appear in the project (instead of just adding them) so that they at
+ # least have an explicit representation in the project LLVMBuild files (and
+ # comments explaining how they are populated).
+ def find_special_group(name):
+ info = info_map.get(name)
+ if info is None:
+ fatal("expected project to contain special %r component" % (
+ name,))
+
+ if info.type_name != 'LibraryGroup':
+ fatal("special component %r should be a LibraryGroup" % (
+ name,))
+
+ if info.required_libraries:
+ fatal("special component %r must have empty %r list" % (
+ name, 'required_libraries'))
+ if info.add_to_library_groups:
+ fatal("special component %r must have empty %r list" % (
+ name, 'add_to_library_groups'))
+
+ return info
+
+ info_map = dict((ci.name, ci) for ci in project.component_infos)
+ all_targets = find_special_group('all-targets')
+ native_group = find_special_group('Native')
+ native_codegen_group = find_special_group('NativeCodeGen')
+ engine_group = find_special_group('Engine')
+
+ # Set the enabled bit in all the target groups, and append to the
+ # all-targets list.
+ for ci in enable_targets:
+ all_targets.required_libraries.append(ci.name)
+ ci.enabled = True
+
+ # If we have a native target, then that defines the native and
+ # native_codegen libraries.
+ if native_target and native_target.enabled:
+ native_group.required_libraries.append(native_target.name)
+ native_codegen_group.required_libraries.append(
+ '%sCodeGen' % native_target.name)
+
+ # If we have a native target with a JIT, use that for the engine. Otherwise,
+ # use the interpreter.
+ if native_target and native_target.enabled and native_target.has_jit:
+ engine_group.required_libraries.append('JIT')
+ engine_group.required_libraries.append(native_group.name)
+ else:
+ engine_group.required_libraries.append('Interpreter')
+
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