12 def cmake_quote_string(value):
14 cmake_quote_string(value) -> str
16 Return a quoted form of the given value that is suitable for use in CMake
20 # Currently, we only handle escaping backslashes.
21 value = value.replace("\\", "\\\\")
25 def cmake_quote_path(value):
27 cmake_quote_path(value) -> str
29 Return a quoted form of the given value that is suitable for use in CMake
33 # CMake has a bug in it's Makefile generator that doesn't properly quote
34 # strings it generates. So instead of using proper quoting, we just use "/"
35 # style paths. Currently, we only handle escaping backslashes.
36 value = value.replace("\\", "/")
40 def mk_quote_string_for_target(value):
42 mk_quote_string_for_target(target_name) -> str
44 Return a quoted form of the given target_name suitable for including in a
45 Makefile as a target name.
48 # The only quoting we currently perform is for ':', to support msys users.
49 return value.replace(":", "\\:")
51 def make_install_dir(path):
53 make_install_dir(path) -> None
55 Create the given directory path for installation, including any parents.
58 # os.makedirs considers it an error to be called with an existant path.
59 if not os.path.exists(path):
64 class LLVMProjectInfo(object):
66 def load_infos_from_path(llvmbuild_source_root):
68 # Load the LLVMBuild file.
69 llvmbuild_path = os.path.join(llvmbuild_source_root + subpath,
71 if not os.path.exists(llvmbuild_path):
72 fatal("missing LLVMBuild.txt file at: %r" % (llvmbuild_path,))
74 # Parse the components from it.
75 common,info_iter = componentinfo.load_from_path(llvmbuild_path,
77 for info in info_iter:
80 # Recurse into the specified subdirectories.
81 for subdir in common.get_list("subdirectories"):
82 for item in recurse(os.path.join(subpath, subdir)):
88 def load_from_path(source_root, llvmbuild_source_root):
90 LLVMProjectInfo.load_infos_from_path(llvmbuild_source_root))
92 return LLVMProjectInfo(source_root, infos)
94 def __init__(self, source_root, component_infos):
95 # Store our simple ivars.
96 self.source_root = source_root
97 self.component_infos = list(component_infos)
98 self.component_info_map = None
99 self.ordered_component_infos = None
101 def validate_components(self):
102 """validate_components() -> None
104 Validate that the project components are well-defined. Among other
105 things, this checks that:
106 - Components have valid references.
107 - Components references do not form cycles.
109 We also construct the map from component names to info, and the
110 topological ordering of components.
113 # Create the component info map and validate that component names are
115 self.component_info_map = {}
116 for ci in self.component_infos:
117 existing = self.component_info_map.get(ci.name)
118 if existing is not None:
119 # We found a duplicate component name, report it and error out.
120 fatal("found duplicate component %r (at %r and %r)" % (
121 ci.name, ci.subpath, existing.subpath))
122 self.component_info_map[ci.name] = ci
124 # Disallow 'all' as a component name, which is a special case.
125 if 'all' in self.component_info_map:
126 fatal("project is not allowed to define 'all' component")
128 # Add the root component.
129 if '$ROOT' in self.component_info_map:
130 fatal("project is not allowed to define $ROOT component")
131 self.component_info_map['$ROOT'] = componentinfo.GroupComponentInfo(
133 self.component_infos.append(self.component_info_map['$ROOT'])
135 # Topologically order the component information according to their
136 # component references.
137 def visit_component_info(ci, current_stack, current_set):
138 # Check for a cycles.
139 if ci in current_set:
140 # We found a cycle, report it and error out.
141 cycle_description = ' -> '.join(
142 '%r (%s)' % (ci.name, relation)
143 for relation,ci in current_stack)
144 fatal("found cycle to %r after following: %s -> %s" % (
145 ci.name, cycle_description, ci.name))
147 # If we have already visited this item, we are done.
148 if ci not in components_to_visit:
151 # Otherwise, mark the component info as visited and traverse.
152 components_to_visit.remove(ci)
154 # Validate the parent reference, which we treat specially.
155 if ci.parent is not None:
156 parent = self.component_info_map.get(ci.parent)
158 fatal("component %r has invalid reference %r (via %r)" % (
159 ci.name, ci.parent, 'parent'))
160 ci.set_parent_instance(parent)
162 for relation,referent_name in ci.get_component_references():
163 # Validate that the reference is ok.
164 referent = self.component_info_map.get(referent_name)
166 fatal("component %r has invalid reference %r (via %r)" % (
167 ci.name, referent_name, relation))
169 # Visit the reference.
170 current_stack.append((relation,ci))
172 visit_component_info(referent, current_stack, current_set)
173 current_set.remove(ci)
176 # Finally, add the component info to the ordered list.
177 self.ordered_component_infos.append(ci)
179 # FIXME: We aren't actually correctly checking for cycles along the
180 # parent edges. Haven't decided how I want to handle this -- I thought
181 # about only checking cycles by relation type. If we do that, it falls
182 # out easily. If we don't, we should special case the check.
184 self.ordered_component_infos = []
185 components_to_visit = set(self.component_infos)
186 while components_to_visit:
187 visit_component_info(iter(components_to_visit).next(), [], set())
189 # Canonicalize children lists.
190 for c in self.ordered_component_infos:
191 c.children.sort(key = lambda c: c.name)
193 def print_tree(self):
194 def visit(node, depth = 0):
195 print '%s%-40s (%s)' % (' '*depth, node.name, node.type_name)
196 for c in node.children:
198 visit(self.component_info_map['$ROOT'])
200 def write_components(self, output_path):
201 # Organize all the components by the directory their LLVMBuild file
204 for ci in self.component_infos:
205 # Ignore the $ROOT component.
206 if ci.parent is None:
209 info_basedir[ci.subpath] = info_basedir.get(ci.subpath, []) + [ci]
211 # Compute the list of subdirectories to scan.
213 for ci in self.component_infos:
214 # Ignore root components.
215 if ci.subpath == '/':
218 # Otherwise, append this subpath to the parent list.
219 parent_path = os.path.dirname(ci.subpath)
220 subpath_subdirs[parent_path] = parent_list = subpath_subdirs.get(
222 parent_list.add(os.path.basename(ci.subpath))
224 # Generate the build files.
225 for subpath, infos in info_basedir.items():
226 # Order the components by name to have a canonical ordering.
227 infos.sort(key = lambda ci: ci.name)
229 # Format the components into llvmbuild fragments.
232 # Add the common fragments.
233 subdirectories = subpath_subdirs.get(subpath)
237 """ % (" ".join(sorted(subdirectories)),)
238 fragments.append(("common", fragment))
240 # Add the component fragments.
241 num_common_fragments = len(fragments)
243 fragment = ci.get_llvmbuild_fragment()
247 name = "component_%d" % (len(fragments) - num_common_fragments)
248 fragments.append((name, fragment))
253 assert subpath.startswith('/')
254 directory_path = os.path.join(output_path, subpath[1:])
256 # Create the directory if it does not already exist.
257 if not os.path.exists(directory_path):
258 os.makedirs(directory_path)
260 # In an effort to preserve comments (which aren't parsed), read in
261 # the original file and extract the comments. We only know how to
262 # associate comments that prefix a section name.
263 f = open(infos[0]._source_path)
267 if ln.startswith(';'):
269 elif ln.startswith('[') and ln.endswith(']\n'):
270 comments_map[ln[1:-2]] = comment_block
275 # Create the LLVMBuild fil[e.
276 file_path = os.path.join(directory_path, 'LLVMBuild.txt')
277 f = open(file_path, "w")
280 header_fmt = ';===- %s %s-*- Conf -*--===;'
281 header_name = '.' + os.path.join(subpath, 'LLVMBuild.txt')
282 header_pad = '-' * (80 - len(header_fmt % (header_name, '')))
283 header_string = header_fmt % (header_name, header_pad)
287 ; The LLVM Compiler Infrastructure
289 ; This file is distributed under the University of Illinois Open Source
290 ; License. See LICENSE.TXT for details.
292 ;===------------------------------------------------------------------------===;
294 ; This is an LLVMBuild description file for the components in this subdirectory.
296 ; For more information on the LLVMBuild system, please see:
298 ; http://llvm.org/docs/LLVMBuild.html
300 ;===------------------------------------------------------------------------===;
303 # Write out each fragment.each component fragment.
304 for name,fragment in fragments:
305 comment = comments_map.get(name)
306 if comment is not None:
308 print >>f, "[%s]" % name
310 if fragment is not fragments[-1][1]:
315 def write_library_table(self, output_path, enabled_optional_components):
316 # Write out the mapping from component names to required libraries.
318 # We do this in topological order so that we know we can append the
319 # dependencies for added library groups.
321 for c in self.ordered_component_infos:
322 # Skip optional components which are not enabled.
323 if c.type_name == 'OptionalLibrary' \
324 and c.name not in enabled_optional_components:
327 # Skip target groups which are not enabled.
328 tg = c.get_parent_target_group()
329 if tg and not tg.enabled:
332 # Only certain components are in the table.
333 if c.type_name not in ('Library', 'OptionalLibrary', \
334 'LibraryGroup', 'TargetGroup'):
337 # Compute the llvm-config "component name". For historical reasons,
338 # this is lowercased based on the library name.
339 llvmconfig_component_name = c.get_llvmconfig_component_name()
341 # Get the library name, or None for LibraryGroups.
342 if c.type_name == 'Library' or c.type_name == 'OptionalLibrary':
343 library_name = c.get_prefixed_library_name()
347 # Get the component names of all the required libraries.
348 required_llvmconfig_component_names = [
349 self.component_info_map[dep].get_llvmconfig_component_name()
350 for dep in c.required_libraries]
352 # Insert the entries for library groups we should add to.
353 for dep in c.add_to_library_groups:
354 entries[dep][2].append(llvmconfig_component_name)
357 entries[c.name] = (llvmconfig_component_name, library_name,
358 required_llvmconfig_component_names)
360 # Convert to a list of entries and sort by name.
361 entries = entries.values()
363 # Create an 'all' pseudo component. We keep the dependency list small by
364 # only listing entries that have no other dependents.
365 root_entries = set(e[0] for e in entries)
366 for _,_,deps in entries:
367 root_entries -= set(deps)
368 entries.append(('all', None, root_entries))
372 # Compute the maximum number of required libraries, plus one so there is
374 max_required_libraries = max(len(deps)
375 for _,_,deps in entries) + 1
377 # Write out the library table.
378 make_install_dir(os.path.dirname(output_path))
379 f = open(output_path, 'w')
381 //===- llvm-build generated file --------------------------------*- C++ -*-===//
383 // Component Library Depenedency Table
385 // Automatically generated file, do not edit!
387 //===----------------------------------------------------------------------===//
389 print >>f, 'struct AvailableComponent {'
390 print >>f, ' /// The name of the component.'
391 print >>f, ' const char *Name;'
393 print >>f, ' /// The name of the library for this component (or NULL).'
394 print >>f, ' const char *Library;'
397 /// The list of libraries required when linking this component.'
398 print >>f, ' const char *RequiredLibraries[%d];' % (
399 max_required_libraries)
400 print >>f, '} AvailableComponents[%d] = {' % len(entries)
401 for name,library_name,required_names in entries:
402 if library_name is None:
403 library_name_as_cstr = '0'
405 library_name_as_cstr = '"lib%s.a"' % library_name
406 print >>f, ' { "%s", %s, { %s } },' % (
407 name, library_name_as_cstr,
408 ', '.join('"%s"' % dep
409 for dep in required_names))
413 def get_required_libraries_for_component(self, ci, traverse_groups = False):
415 get_required_libraries_for_component(component_info) -> iter
417 Given a Library component info descriptor, return an iterator over all
418 of the directly required libraries for linking with this component. If
419 traverse_groups is True, then library and target groups will be
420 traversed to include their required libraries.
423 assert ci.type_name in ('Library', 'LibraryGroup', 'TargetGroup')
425 for name in ci.required_libraries:
426 # Get the dependency info.
427 dep = self.component_info_map[name]
429 # If it is a library, yield it.
430 if dep.type_name == 'Library':
434 # Otherwise if it is a group, yield or traverse depending on what
436 if dep.type_name in ('LibraryGroup', 'TargetGroup'):
437 if not traverse_groups:
441 for res in self.get_required_libraries_for_component(dep, True):
444 def get_fragment_dependencies(self):
446 get_fragment_dependencies() -> iter
448 Compute the list of files (as absolute paths) on which the output
449 fragments depend (i.e., files for which a modification should trigger a
450 rebuild of the fragment).
453 # Construct a list of all the dependencies of the Makefile fragment
454 # itself. These include all the LLVMBuild files themselves, as well as
455 # all of our own sources.
457 # Many components may come from the same file, so we make sure to unique
460 for ci in self.component_infos:
461 p = os.path.join(self.source_root, ci.subpath[1:], 'LLVMBuild.txt')
462 if p not in build_paths:
466 # Gather the list of necessary sources by just finding all loaded
467 # modules that are inside the LLVM source tree.
468 for module in sys.modules.values():
469 # Find the module path.
470 if not hasattr(module, '__file__'):
472 path = getattr(module, '__file__')
476 # Strip off any compiled suffix.
477 if os.path.splitext(path)[1] in ['.pyc', '.pyo', '.pyd']:
480 # If the path exists and is in the source tree, consider it a
482 if (path.startswith(self.source_root) and os.path.exists(path)):
485 def write_cmake_fragment(self, output_path):
487 write_cmake_fragment(output_path) -> None
489 Generate a CMake fragment which includes all of the collated LLVMBuild
490 information in a format that is easily digestible by a CMake. The exact
491 contents of this are closely tied to how the CMake configuration
492 integrates LLVMBuild, see CMakeLists.txt in the top-level.
495 dependencies = list(self.get_fragment_dependencies())
497 # Write out the CMake fragment.
498 make_install_dir(os.path.dirname(output_path))
499 f = open(output_path, 'w')
503 #===-- %s - LLVMBuild Configuration for LLVM %s-*- CMake -*--===#'
504 header_name = os.path.basename(output_path)
505 header_pad = '-' * (80 - len(header_fmt % (header_name, '')))
506 header_string = header_fmt % (header_name, header_pad)
510 # The LLVM Compiler Infrastructure
512 # This file is distributed under the University of Illinois Open Source
513 # License. See LICENSE.TXT for details.
515 #===------------------------------------------------------------------------===#
517 # This file contains the LLVMBuild project information in a format easily
518 # consumed by the CMake based build system.
520 # This file is autogenerated by llvm-build, do not edit!
522 #===------------------------------------------------------------------------===#
525 # Write the dependency information in the best way we can.
527 # LLVMBuild CMake fragment dependencies.
529 # CMake has no builtin way to declare that the configuration depends on
530 # a particular file. However, a side effect of configure_file is to add
531 # said input file to CMake's internal dependency list. So, we use that
532 # and a dummy output file to communicate the dependency information to
535 # FIXME: File a CMake RFE to get a properly supported version of this
537 for dep in dependencies:
539 configure_file(\"%s\"
540 ${CMAKE_CURRENT_BINARY_DIR}/DummyConfigureOutput)""" % (
541 cmake_quote_path(dep),)
543 # Write the properties we use to encode the required library dependency
544 # information in a form CMake can easily use directly.
546 # Explicit library dependency information.
548 # The following property assignments effectively create a map from component
549 # names to required libraries, in a way that is easily accessed from CMake."""
550 for ci in self.ordered_component_infos:
551 # We only write the information for libraries currently.
552 if ci.type_name != 'Library':
556 set_property(GLOBAL PROPERTY LLVMBUILD_LIB_DEPS_%s %s)""" % (
557 ci.get_prefixed_library_name(), " ".join(sorted(
558 dep.get_prefixed_library_name()
559 for dep in self.get_required_libraries_for_component(ci))))
563 def write_make_fragment(self, output_path):
565 write_make_fragment(output_path) -> None
567 Generate a Makefile fragment which includes all of the collated
568 LLVMBuild information in a format that is easily digestible by a
569 Makefile. The exact contents of this are closely tied to how the LLVM
570 Makefiles integrate LLVMBuild, see Makefile.rules in the top-level.
573 dependencies = list(self.get_fragment_dependencies())
575 # Write out the Makefile fragment.
576 make_install_dir(os.path.dirname(output_path))
577 f = open(output_path, 'w')
581 #===-- %s - LLVMBuild Configuration for LLVM %s-*- Makefile -*--===#'
582 header_name = os.path.basename(output_path)
583 header_pad = '-' * (80 - len(header_fmt % (header_name, '')))
584 header_string = header_fmt % (header_name, header_pad)
588 # The LLVM Compiler Infrastructure
590 # This file is distributed under the University of Illinois Open Source
591 # License. See LICENSE.TXT for details.
593 #===------------------------------------------------------------------------===#
595 # This file contains the LLVMBuild project information in a format easily
596 # consumed by the Makefile based build system.
598 # This file is autogenerated by llvm-build, do not edit!
600 #===------------------------------------------------------------------------===#
603 # Write the dependencies for the fragment.
605 # FIXME: Technically, we need to properly quote for Make here.
607 # Clients must explicitly enable LLVMBUILD_INCLUDE_DEPENDENCIES to get
608 # these dependencies. This is a compromise to help improve the
609 # performance of recursive Make systems."""
610 print >>f, 'ifeq ($(LLVMBUILD_INCLUDE_DEPENDENCIES),1)'
611 print >>f, "# The dependencies for this Makefile fragment itself."
612 print >>f, "%s: \\" % (mk_quote_string_for_target(output_path),)
613 for dep in dependencies:
614 print >>f, "\t%s \\" % (dep,)
617 # Generate dummy rules for each of the dependencies, so that things
618 # continue to work correctly if any of those files are moved or removed.
620 # The dummy targets to allow proper regeneration even when files are moved or
622 for dep in dependencies:
623 print >>f, "%s:" % (mk_quote_string_for_target(dep),)
628 def add_magic_target_components(parser, project, opts):
629 """add_magic_target_components(project, opts) -> None
631 Add the "magic" target based components to the project, which can only be
632 determined based on the target configuration options.
634 This currently is responsible for populating the required_libraries list of
635 the "all-targets", "Native", "NativeCodeGen", and "Engine" components.
638 # Determine the available targets.
639 available_targets = dict((ci.name,ci)
640 for ci in project.component_infos
641 if ci.type_name == 'TargetGroup')
643 # Find the configured native target.
645 # We handle a few special cases of target names here for historical
646 # reasons, as these are the names configure currently comes up with.
647 native_target_name = { 'x86' : 'X86',
649 'Unknown' : None }.get(opts.native_target,
651 if native_target_name is None:
654 native_target = available_targets.get(native_target_name)
655 if native_target is None:
656 parser.error("invalid native target: %r (not in project)" % (
657 opts.native_target,))
658 if native_target.type_name != 'TargetGroup':
659 parser.error("invalid native target: %r (not a target)" % (
660 opts.native_target,))
662 # Find the list of targets to enable.
663 if opts.enable_targets is None:
664 enable_targets = available_targets.values()
666 # We support both space separated and semi-colon separated lists.
667 if ' ' in opts.enable_targets:
668 enable_target_names = opts.enable_targets.split()
670 enable_target_names = opts.enable_targets.split(';')
673 for name in enable_target_names:
674 target = available_targets.get(name)
676 parser.error("invalid target to enable: %r (not in project)" % (
678 if target.type_name != 'TargetGroup':
679 parser.error("invalid target to enable: %r (not a target)" % (
681 enable_targets.append(target)
683 # Find the special library groups we are going to populate. We enforce that
684 # these appear in the project (instead of just adding them) so that they at
685 # least have an explicit representation in the project LLVMBuild files (and
686 # comments explaining how they are populated).
687 def find_special_group(name):
688 info = info_map.get(name)
690 fatal("expected project to contain special %r component" % (
693 if info.type_name != 'LibraryGroup':
694 fatal("special component %r should be a LibraryGroup" % (
697 if info.required_libraries:
698 fatal("special component %r must have empty %r list" % (
699 name, 'required_libraries'))
700 if info.add_to_library_groups:
701 fatal("special component %r must have empty %r list" % (
702 name, 'add_to_library_groups'))
704 info._is_special_group = True
707 info_map = dict((ci.name, ci) for ci in project.component_infos)
708 all_targets = find_special_group('all-targets')
709 native_group = find_special_group('Native')
710 native_codegen_group = find_special_group('NativeCodeGen')
711 engine_group = find_special_group('Engine')
713 # Set the enabled bit in all the target groups, and append to the
715 for ci in enable_targets:
716 all_targets.required_libraries.append(ci.name)
719 # If we have a native target, then that defines the native and
720 # native_codegen libraries.
721 if native_target and native_target.enabled:
722 native_group.required_libraries.append(native_target.name)
723 native_codegen_group.required_libraries.append(
724 '%sCodeGen' % native_target.name)
726 # If we have a native target with a JIT, use that for the engine. Otherwise,
727 # use the interpreter.
728 if native_target and native_target.enabled and native_target.has_jit:
729 engine_group.required_libraries.append('JIT')
730 engine_group.required_libraries.append(native_group.name)
732 engine_group.required_libraries.append('Interpreter')
735 from optparse import OptionParser, OptionGroup
736 parser = OptionParser("usage: %prog [options]")
738 group = OptionGroup(parser, "Input Options")
739 group.add_option("", "--source-root", dest="source_root", metavar="PATH",
740 help="Path to the LLVM source (inferred if not given)",
741 action="store", default=None)
742 group.add_option("", "--llvmbuild-source-root",
743 dest="llvmbuild_source_root",
745 "If given, an alternate path to search for LLVMBuild.txt files"),
746 action="store", default=None, metavar="PATH")
747 group.add_option("", "--build-root", dest="build_root", metavar="PATH",
748 help="Path to the build directory (if needed) [%default]",
749 action="store", default=None)
750 parser.add_option_group(group)
752 group = OptionGroup(parser, "Output Options")
753 group.add_option("", "--print-tree", dest="print_tree",
754 help="Print out the project component tree [%default]",
755 action="store_true", default=False)
756 group.add_option("", "--write-llvmbuild", dest="write_llvmbuild",
757 help="Write out the LLVMBuild.txt files to PATH",
758 action="store", default=None, metavar="PATH")
759 group.add_option("", "--write-library-table",
760 dest="write_library_table", metavar="PATH",
761 help="Write the C++ library dependency table to PATH",
762 action="store", default=None)
763 group.add_option("", "--write-cmake-fragment",
764 dest="write_cmake_fragment", metavar="PATH",
765 help="Write the CMake project information to PATH",
766 action="store", default=None)
767 group.add_option("", "--write-make-fragment",
768 dest="write_make_fragment", metavar="PATH",
769 help="Write the Makefile project information to PATH",
770 action="store", default=None)
771 group.add_option("", "--configure-target-def-file",
772 dest="configure_target_def_files",
773 help="""Configure the given file at SUBPATH (relative to
774 the inferred or given source root, and with a '.in' suffix) by replacing certain
775 substitution variables with lists of targets that support certain features (for
776 example, targets with AsmPrinters) and write the result to the build root (as
777 given by --build-root) at the same SUBPATH""",
778 metavar="SUBPATH", action="append", default=None)
779 parser.add_option_group(group)
781 group = OptionGroup(parser, "Configuration Options")
782 group.add_option("", "--native-target",
783 dest="native_target", metavar="NAME",
784 help=("Treat the named target as the 'native' one, if "
786 action="store", default=None)
787 group.add_option("", "--enable-targets",
788 dest="enable_targets", metavar="NAMES",
789 help=("Enable the given space or semi-colon separated "
790 "list of targets, or all targets if not present"),
791 action="store", default=None)
792 group.add_option("", "--enable-optional-components",
793 dest="optional_components", metavar="NAMES",
794 help=("Enable the given space or semi-colon separated "
795 "list of optional components"),
796 action="store", default=None)
797 parser.add_option_group(group)
799 (opts, args) = parser.parse_args()
801 # Determine the LLVM source path, if not given.
802 source_root = opts.source_root
804 if not os.path.exists(os.path.join(source_root, 'lib', 'VMCore',
806 parser.error('invalid LLVM source root: %r' % source_root)
808 llvmbuild_path = os.path.dirname(__file__)
809 llvm_build_path = os.path.dirname(llvmbuild_path)
810 utils_path = os.path.dirname(llvm_build_path)
811 source_root = os.path.dirname(utils_path)
812 if not os.path.exists(os.path.join(source_root, 'lib', 'VMCore',
814 parser.error('unable to infer LLVM source root, please specify')
816 # Construct the LLVM project information.
817 llvmbuild_source_root = opts.llvmbuild_source_root or source_root
818 project_info = LLVMProjectInfo.load_from_path(
819 source_root, llvmbuild_source_root)
821 # Add the magic target based components.
822 add_magic_target_components(parser, project_info, opts)
824 # Validate the project component info.
825 project_info.validate_components()
827 # Print the component tree, if requested.
829 project_info.print_tree()
831 # Write out the components, if requested. This is useful for auto-upgrading
833 if opts.write_llvmbuild:
834 project_info.write_components(opts.write_llvmbuild)
836 # Write out the required library table, if requested.
837 if opts.write_library_table:
838 project_info.write_library_table(opts.write_library_table,
839 opts.optional_components)
841 # Write out the make fragment, if requested.
842 if opts.write_make_fragment:
843 project_info.write_make_fragment(opts.write_make_fragment)
845 # Write out the cmake fragment, if requested.
846 if opts.write_cmake_fragment:
847 project_info.write_cmake_fragment(opts.write_cmake_fragment)
849 # Configure target definition files, if requested.
850 if opts.configure_target_def_files:
851 # Verify we were given a build root.
852 if not opts.build_root:
853 parser.error("must specify --build-root when using "
854 "--configure-target-def-file")
856 # Create the substitution list.
857 available_targets = [ci for ci in project_info.component_infos
858 if ci.type_name == 'TargetGroup']
860 ("@LLVM_ENUM_TARGETS@",
861 ' '.join('LLVM_TARGET(%s)' % ci.name
862 for ci in available_targets)),
863 ("@LLVM_ENUM_ASM_PRINTERS@",
864 ' '.join('LLVM_ASM_PRINTER(%s)' % ci.name
865 for ci in available_targets
866 if ci.has_asmprinter)),
867 ("@LLVM_ENUM_ASM_PARSERS@",
868 ' '.join('LLVM_ASM_PARSER(%s)' % ci.name
869 for ci in available_targets
870 if ci.has_asmparser)),
871 ("@LLVM_ENUM_DISASSEMBLERS@",
872 ' '.join('LLVM_DISASSEMBLER(%s)' % ci.name
873 for ci in available_targets
874 if ci.has_disassembler))]
876 # Configure the given files.
877 for subpath in opts.configure_target_def_files:
878 inpath = os.path.join(source_root, subpath + '.in')
879 outpath = os.path.join(opts.build_root, subpath)
880 result = configutil.configure_file(inpath, outpath, substitutions)
882 note("configured file %r hasn't changed" % outpath)
884 if __name__=='__main__':