1 from __future__ import absolute_import
6 import llvmbuild.componentinfo as componentinfo
7 import llvmbuild.configutil as configutil
9 from llvmbuild.util import fatal, note
13 def cmake_quote_string(value):
15 cmake_quote_string(value) -> str
17 Return a quoted form of the given value that is suitable for use in CMake
21 # Currently, we only handle escaping backslashes.
22 value = value.replace("\\", "\\\\")
26 def cmake_quote_path(value):
28 cmake_quote_path(value) -> str
30 Return a quoted form of the given value that is suitable for use in CMake
34 # CMake has a bug in it's Makefile generator that doesn't properly quote
35 # strings it generates. So instead of using proper quoting, we just use "/"
36 # style paths. Currently, we only handle escaping backslashes.
37 value = value.replace("\\", "/")
41 def mk_quote_string_for_target(value):
43 mk_quote_string_for_target(target_name) -> str
45 Return a quoted form of the given target_name suitable for including in a
46 Makefile as a target name.
49 # The only quoting we currently perform is for ':', to support msys users.
50 return value.replace(":", "\\:")
52 def make_install_dir(path):
54 make_install_dir(path) -> None
56 Create the given directory path for installation, including any parents.
59 # os.makedirs considers it an error to be called with an existent path.
60 if not os.path.exists(path):
65 class LLVMProjectInfo(object):
67 def load_infos_from_path(llvmbuild_source_root):
69 # Load the LLVMBuild file.
70 llvmbuild_path = os.path.join(llvmbuild_source_root + subpath,
72 if not os.path.exists(llvmbuild_path):
73 fatal("missing LLVMBuild.txt file at: %r" % (llvmbuild_path,))
75 # Parse the components from it.
76 common,info_iter = componentinfo.load_from_path(llvmbuild_path,
78 for info in info_iter:
81 # Recurse into the specified subdirectories.
82 for subdir in common.get_list("subdirectories"):
83 for item in recurse(os.path.join(subpath, subdir)):
89 def load_from_path(source_root, llvmbuild_source_root):
91 LLVMProjectInfo.load_infos_from_path(llvmbuild_source_root))
93 return LLVMProjectInfo(source_root, infos)
95 def __init__(self, source_root, component_infos):
96 # Store our simple ivars.
97 self.source_root = source_root
98 self.component_infos = list(component_infos)
99 self.component_info_map = None
100 self.ordered_component_infos = None
102 def validate_components(self):
103 """validate_components() -> None
105 Validate that the project components are well-defined. Among other
106 things, this checks that:
107 - Components have valid references.
108 - Components references do not form cycles.
110 We also construct the map from component names to info, and the
111 topological ordering of components.
114 # Create the component info map and validate that component names are
116 self.component_info_map = {}
117 for ci in self.component_infos:
118 existing = self.component_info_map.get(ci.name)
119 if existing is not None:
120 # We found a duplicate component name, report it and error out.
121 fatal("found duplicate component %r (at %r and %r)" % (
122 ci.name, ci.subpath, existing.subpath))
123 self.component_info_map[ci.name] = ci
125 # Disallow 'all' as a component name, which is a special case.
126 if 'all' in self.component_info_map:
127 fatal("project is not allowed to define 'all' component")
129 # Add the root component.
130 if '$ROOT' in self.component_info_map:
131 fatal("project is not allowed to define $ROOT component")
132 self.component_info_map['$ROOT'] = componentinfo.GroupComponentInfo(
134 self.component_infos.append(self.component_info_map['$ROOT'])
136 # Topologically order the component information according to their
137 # component references.
138 def visit_component_info(ci, current_stack, current_set):
139 # Check for a cycles.
140 if ci in current_set:
141 # We found a cycle, report it and error out.
142 cycle_description = ' -> '.join(
143 '%r (%s)' % (ci.name, relation)
144 for relation,ci in current_stack)
145 fatal("found cycle to %r after following: %s -> %s" % (
146 ci.name, cycle_description, ci.name))
148 # If we have already visited this item, we are done.
149 if ci not in components_to_visit:
152 # Otherwise, mark the component info as visited and traverse.
153 components_to_visit.remove(ci)
155 # Validate the parent reference, which we treat specially.
156 if ci.parent is not None:
157 parent = self.component_info_map.get(ci.parent)
159 fatal("component %r has invalid reference %r (via %r)" % (
160 ci.name, ci.parent, 'parent'))
161 ci.set_parent_instance(parent)
163 for relation,referent_name in ci.get_component_references():
164 # Validate that the reference is ok.
165 referent = self.component_info_map.get(referent_name)
167 fatal("component %r has invalid reference %r (via %r)" % (
168 ci.name, referent_name, relation))
170 # Visit the reference.
171 current_stack.append((relation,ci))
173 visit_component_info(referent, current_stack, current_set)
174 current_set.remove(ci)
177 # Finally, add the component info to the ordered list.
178 self.ordered_component_infos.append(ci)
180 # FIXME: We aren't actually correctly checking for cycles along the
181 # parent edges. Haven't decided how I want to handle this -- I thought
182 # about only checking cycles by relation type. If we do that, it falls
183 # out easily. If we don't, we should special case the check.
185 self.ordered_component_infos = []
186 components_to_visit = sorted(
187 set(self.component_infos),
188 key = lambda c: c.name)
189 while components_to_visit:
190 visit_component_info(components_to_visit[0], [], set())
192 # Canonicalize children lists.
193 for c in self.ordered_component_infos:
194 c.children.sort(key = lambda c: c.name)
196 def print_tree(self):
197 def visit(node, depth = 0):
198 print('%s%-40s (%s)' % (' '*depth, node.name, node.type_name))
199 for c in node.children:
201 visit(self.component_info_map['$ROOT'])
203 def write_components(self, output_path):
204 # Organize all the components by the directory their LLVMBuild file
207 for ci in self.component_infos:
208 # Ignore the $ROOT component.
209 if ci.parent is None:
212 info_basedir[ci.subpath] = info_basedir.get(ci.subpath, []) + [ci]
214 # Compute the list of subdirectories to scan.
216 for ci in self.component_infos:
217 # Ignore root components.
218 if ci.subpath == '/':
221 # Otherwise, append this subpath to the parent list.
222 parent_path = os.path.dirname(ci.subpath)
223 subpath_subdirs[parent_path] = parent_list = subpath_subdirs.get(
225 parent_list.add(os.path.basename(ci.subpath))
227 # Generate the build files.
228 for subpath, infos in info_basedir.items():
229 # Order the components by name to have a canonical ordering.
230 infos.sort(key = lambda ci: ci.name)
232 # Format the components into llvmbuild fragments.
235 # Add the common fragments.
236 subdirectories = subpath_subdirs.get(subpath)
240 """ % (" ".join(sorted(subdirectories)),)
241 fragments.append(("common", fragment))
243 # Add the component fragments.
244 num_common_fragments = len(fragments)
246 fragment = ci.get_llvmbuild_fragment()
250 name = "component_%d" % (len(fragments) - num_common_fragments)
251 fragments.append((name, fragment))
256 assert subpath.startswith('/')
257 directory_path = os.path.join(output_path, subpath[1:])
259 # Create the directory if it does not already exist.
260 if not os.path.exists(directory_path):
261 os.makedirs(directory_path)
263 # In an effort to preserve comments (which aren't parsed), read in
264 # the original file and extract the comments. We only know how to
265 # associate comments that prefix a section name.
266 f = open(infos[0]._source_path)
270 if ln.startswith(';'):
272 elif ln.startswith('[') and ln.endswith(']\n'):
273 comments_map[ln[1:-2]] = comment_block
278 # Create the LLVMBuild fil[e.
279 file_path = os.path.join(directory_path, 'LLVMBuild.txt')
280 f = open(file_path, "w")
283 header_fmt = ';===- %s %s-*- Conf -*--===;'
284 header_name = '.' + os.path.join(subpath, 'LLVMBuild.txt')
285 header_pad = '-' * (80 - len(header_fmt % (header_name, '')))
286 header_string = header_fmt % (header_name, header_pad)
290 ; The LLVM Compiler Infrastructure
292 ; This file is distributed under the University of Illinois Open Source
293 ; License. See LICENSE.TXT for details.
295 ;===------------------------------------------------------------------------===;
297 ; This is an LLVMBuild description file for the components in this subdirectory.
299 ; For more information on the LLVMBuild system, please see:
301 ; http://llvm.org/docs/LLVMBuild.html
303 ;===------------------------------------------------------------------------===;
307 # Write out each fragment.each component fragment.
308 for name,fragment in fragments:
309 comment = comments_map.get(name)
310 if comment is not None:
312 f.write("[%s]\n" % name)
314 if fragment is not fragments[-1][1]:
319 def write_library_table(self, output_path, enabled_optional_components):
320 # Write out the mapping from component names to required libraries.
322 # We do this in topological order so that we know we can append the
323 # dependencies for added library groups.
325 for c in self.ordered_component_infos:
326 # Skip optional components which are not enabled.
327 if c.type_name == 'OptionalLibrary' \
328 and c.name not in enabled_optional_components:
331 # Skip target groups which are not enabled.
332 tg = c.get_parent_target_group()
333 if tg and not tg.enabled:
336 # Only certain components are in the table.
337 if c.type_name not in ('Library', 'OptionalLibrary', \
338 'LibraryGroup', 'TargetGroup'):
341 # Compute the llvm-config "component name". For historical reasons,
342 # this is lowercased based on the library name.
343 llvmconfig_component_name = c.get_llvmconfig_component_name()
345 # Get the library name, or None for LibraryGroups.
346 if c.type_name == 'Library' or c.type_name == 'OptionalLibrary':
347 library_name = c.get_prefixed_library_name()
348 is_installed = c.installed
353 # Get the component names of all the required libraries.
354 required_llvmconfig_component_names = [
355 self.component_info_map[dep].get_llvmconfig_component_name()
356 for dep in c.required_libraries]
358 # Insert the entries for library groups we should add to.
359 for dep in c.add_to_library_groups:
360 entries[dep][2].append(llvmconfig_component_name)
363 entries[c.name] = (llvmconfig_component_name, library_name,
364 required_llvmconfig_component_names,
367 # Convert to a list of entries and sort by name.
368 entries = list(entries.values())
370 # Create an 'all' pseudo component. We keep the dependency list small by
371 # only listing entries that have no other dependents.
372 root_entries = set(e[0] for e in entries)
373 for _,_,deps,_ in entries:
374 root_entries -= set(deps)
375 entries.append(('all', None, root_entries, True))
379 # Compute the maximum number of required libraries, plus one so there is
381 max_required_libraries = max(len(deps)
382 for _,_,deps,_ in entries) + 1
384 # Write out the library table.
385 make_install_dir(os.path.dirname(output_path))
386 f = open(output_path+'.new', 'w')
388 //===- llvm-build generated file --------------------------------*- C++ -*-===//
390 // Component Library Depenedency Table
392 // Automatically generated file, do not edit!
394 //===----------------------------------------------------------------------===//
397 f.write('struct AvailableComponent {\n')
398 f.write(' /// The name of the component.\n')
399 f.write(' const char *Name;\n')
401 f.write(' /// The name of the library for this component (or NULL).\n')
402 f.write(' const char *Library;\n')
404 f.write(' /// Whether the component is installed.\n')
405 f.write(' bool IsInstalled;\n')
408 /// The list of libraries required when linking this component.\n')
409 f.write(' const char *RequiredLibraries[%d];\n' % (
410 max_required_libraries))
411 f.write('} AvailableComponents[%d] = {\n' % len(entries))
412 for name,library_name,required_names,is_installed in entries:
413 if library_name is None:
414 library_name_as_cstr = '0'
416 library_name_as_cstr = '"lib%s.a"' % library_name
417 f.write(' { "%s", %s, %d, { %s } },\n' % (
418 name, library_name_as_cstr, is_installed,
419 ', '.join('"%s"' % dep
420 for dep in required_names)))
424 if not os.path.isfile(output_path):
425 os.rename(output_path+'.new', output_path)
426 elif filecmp.cmp(output_path, output_path+'.new'):
427 os.remove(output_path+'.new')
429 os.remove(output_path)
430 os.rename(output_path+'.new', output_path)
432 def get_required_libraries_for_component(self, ci, traverse_groups = False):
434 get_required_libraries_for_component(component_info) -> iter
436 Given a Library component info descriptor, return an iterator over all
437 of the directly required libraries for linking with this component. If
438 traverse_groups is True, then library and target groups will be
439 traversed to include their required libraries.
442 assert ci.type_name in ('Library', 'OptionalLibrary', 'LibraryGroup', 'TargetGroup')
444 for name in ci.required_libraries:
445 # Get the dependency info.
446 dep = self.component_info_map[name]
448 # If it is a library, yield it.
449 if dep.type_name == 'Library' or dep.type_name == 'OptionalLibrary':
453 # Otherwise if it is a group, yield or traverse depending on what
455 if dep.type_name in ('LibraryGroup', 'TargetGroup'):
456 if not traverse_groups:
460 for res in self.get_required_libraries_for_component(dep, True):
463 def get_fragment_dependencies(self):
465 get_fragment_dependencies() -> iter
467 Compute the list of files (as absolute paths) on which the output
468 fragments depend (i.e., files for which a modification should trigger a
469 rebuild of the fragment).
472 # Construct a list of all the dependencies of the Makefile fragment
473 # itself. These include all the LLVMBuild files themselves, as well as
474 # all of our own sources.
476 # Many components may come from the same file, so we make sure to unique
479 for ci in self.component_infos:
480 p = os.path.join(self.source_root, ci.subpath[1:], 'LLVMBuild.txt')
481 if p not in build_paths:
485 # Gather the list of necessary sources by just finding all loaded
486 # modules that are inside the LLVM source tree.
487 for module in sys.modules.values():
488 # Find the module path.
489 if not hasattr(module, '__file__'):
491 path = getattr(module, '__file__')
495 # Strip off any compiled suffix.
496 if os.path.splitext(path)[1] in ['.pyc', '.pyo', '.pyd']:
499 # If the path exists and is in the source tree, consider it a
501 if (path.startswith(self.source_root) and os.path.exists(path)):
504 def write_cmake_fragment(self, output_path, enabled_optional_components):
506 write_cmake_fragment(output_path) -> None
508 Generate a CMake fragment which includes all of the collated LLVMBuild
509 information in a format that is easily digestible by a CMake. The exact
510 contents of this are closely tied to how the CMake configuration
511 integrates LLVMBuild, see CMakeLists.txt in the top-level.
514 dependencies = list(self.get_fragment_dependencies())
516 # Write out the CMake fragment.
517 make_install_dir(os.path.dirname(output_path))
518 f = open(output_path, 'w')
522 #===-- %s - LLVMBuild Configuration for LLVM %s-*- CMake -*--===#'
523 header_name = os.path.basename(output_path)
524 header_pad = '-' * (80 - len(header_fmt % (header_name, '')))
525 header_string = header_fmt % (header_name, header_pad)
529 # The LLVM Compiler Infrastructure
531 # This file is distributed under the University of Illinois Open Source
532 # License. See LICENSE.TXT for details.
534 #===------------------------------------------------------------------------===#
536 # This file contains the LLVMBuild project information in a format easily
537 # consumed by the CMake based build system.
539 # This file is autogenerated by llvm-build, do not edit!
541 #===------------------------------------------------------------------------===#
545 # Write the dependency information in the best way we can.
547 # LLVMBuild CMake fragment dependencies.
549 # CMake has no builtin way to declare that the configuration depends on
550 # a particular file. However, a side effect of configure_file is to add
551 # said input file to CMake's internal dependency list. So, we use that
552 # and a dummy output file to communicate the dependency information to
555 # FIXME: File a CMake RFE to get a properly supported version of this
558 for dep in dependencies:
560 configure_file(\"%s\"
561 ${CMAKE_CURRENT_BINARY_DIR}/DummyConfigureOutput)\n""" % (
562 cmake_quote_path(dep),))
564 # Write the properties we use to encode the required library dependency
565 # information in a form CMake can easily use directly.
567 # Explicit library dependency information.
569 # The following property assignments effectively create a map from component
570 # names to required libraries, in a way that is easily accessed from CMake.
572 for ci in self.ordered_component_infos:
573 # Skip optional components which are not enabled.
574 if ci.type_name == 'OptionalLibrary' \
575 and ci.name not in enabled_optional_components:
578 # We only write the information for certain components currently.
579 if ci.type_name not in ('Library', 'OptionalLibrary'):
583 set_property(GLOBAL PROPERTY LLVMBUILD_LIB_DEPS_%s %s)\n""" % (
584 ci.get_prefixed_library_name(), " ".join(sorted(
585 dep.get_prefixed_library_name()
586 for dep in self.get_required_libraries_for_component(ci)))))
590 def write_cmake_exports_fragment(self, output_path, enabled_optional_components):
592 write_cmake_exports_fragment(output_path) -> None
594 Generate a CMake fragment which includes LLVMBuild library
595 dependencies expressed similarly to how CMake would write
596 them via install(EXPORT).
599 dependencies = list(self.get_fragment_dependencies())
601 # Write out the CMake exports fragment.
602 make_install_dir(os.path.dirname(output_path))
603 f = open(output_path, 'w')
606 # Explicit library dependency information.
608 # The following property assignments tell CMake about link
609 # dependencies of libraries imported from LLVM.
611 for ci in self.ordered_component_infos:
612 # Skip optional components which are not enabled.
613 if ci.type_name == 'OptionalLibrary' \
614 and ci.name not in enabled_optional_components:
617 # We only write the information for libraries currently.
618 if ci.type_name not in ('Library', 'OptionalLibrary'):
621 # Skip disabled targets.
622 tg = ci.get_parent_target_group()
623 if tg and not tg.enabled:
627 set_property(TARGET %s PROPERTY IMPORTED_LINK_INTERFACE_LIBRARIES %s)\n""" % (
628 ci.get_prefixed_library_name(), " ".join(sorted(
629 dep.get_prefixed_library_name()
630 for dep in self.get_required_libraries_for_component(ci)))))
634 def write_make_fragment(self, output_path):
636 write_make_fragment(output_path) -> None
638 Generate a Makefile fragment which includes all of the collated
639 LLVMBuild information in a format that is easily digestible by a
640 Makefile. The exact contents of this are closely tied to how the LLVM
641 Makefiles integrate LLVMBuild, see Makefile.rules in the top-level.
644 dependencies = list(self.get_fragment_dependencies())
646 # Write out the Makefile fragment.
647 make_install_dir(os.path.dirname(output_path))
648 f = open(output_path, 'w')
652 #===-- %s - LLVMBuild Configuration for LLVM %s-*- Makefile -*--===#'
653 header_name = os.path.basename(output_path)
654 header_pad = '-' * (80 - len(header_fmt % (header_name, '')))
655 header_string = header_fmt % (header_name, header_pad)
659 # The LLVM Compiler Infrastructure
661 # This file is distributed under the University of Illinois Open Source
662 # License. See LICENSE.TXT for details.
664 #===------------------------------------------------------------------------===#
666 # This file contains the LLVMBuild project information in a format easily
667 # consumed by the Makefile based build system.
669 # This file is autogenerated by llvm-build, do not edit!
671 #===------------------------------------------------------------------------===#
675 # Write the dependencies for the fragment.
677 # FIXME: Technically, we need to properly quote for Make here.
679 # Clients must explicitly enable LLVMBUILD_INCLUDE_DEPENDENCIES to get
680 # these dependencies. This is a compromise to help improve the
681 # performance of recursive Make systems.
683 f.write('ifeq ($(LLVMBUILD_INCLUDE_DEPENDENCIES),1)\n')
684 f.write("# The dependencies for this Makefile fragment itself.\n")
685 f.write("%s: \\\n" % (mk_quote_string_for_target(output_path),))
686 for dep in dependencies:
687 f.write("\t%s \\\n" % (dep,))
690 # Generate dummy rules for each of the dependencies, so that things
691 # continue to work correctly if any of those files are moved or removed.
693 # The dummy targets to allow proper regeneration even when files are moved or
696 for dep in dependencies:
697 f.write("%s:\n" % (mk_quote_string_for_target(dep),))
702 def add_magic_target_components(parser, project, opts):
703 """add_magic_target_components(project, opts) -> None
705 Add the "magic" target based components to the project, which can only be
706 determined based on the target configuration options.
708 This currently is responsible for populating the required_libraries list of
709 the "all-targets", "Native", "NativeCodeGen", and "Engine" components.
712 # Determine the available targets.
713 available_targets = dict((ci.name,ci)
714 for ci in project.component_infos
715 if ci.type_name == 'TargetGroup')
717 # Find the configured native target.
719 # We handle a few special cases of target names here for historical
720 # reasons, as these are the names configure currently comes up with.
721 native_target_name = { 'x86' : 'X86',
723 'Unknown' : None }.get(opts.native_target,
725 if native_target_name is None:
728 native_target = available_targets.get(native_target_name)
729 if native_target is None:
730 parser.error("invalid native target: %r (not in project)" % (
731 opts.native_target,))
732 if native_target.type_name != 'TargetGroup':
733 parser.error("invalid native target: %r (not a target)" % (
734 opts.native_target,))
736 # Find the list of targets to enable.
737 if opts.enable_targets is None:
738 enable_targets = available_targets.values()
740 # We support both space separated and semi-colon separated lists.
741 if opts.enable_targets == '':
742 enable_target_names = []
743 elif ' ' in opts.enable_targets:
744 enable_target_names = opts.enable_targets.split()
746 enable_target_names = opts.enable_targets.split(';')
749 for name in enable_target_names:
750 target = available_targets.get(name)
752 parser.error("invalid target to enable: %r (not in project)" % (
754 if target.type_name != 'TargetGroup':
755 parser.error("invalid target to enable: %r (not a target)" % (
757 enable_targets.append(target)
759 # Find the special library groups we are going to populate. We enforce that
760 # these appear in the project (instead of just adding them) so that they at
761 # least have an explicit representation in the project LLVMBuild files (and
762 # comments explaining how they are populated).
763 def find_special_group(name):
764 info = info_map.get(name)
766 fatal("expected project to contain special %r component" % (
769 if info.type_name != 'LibraryGroup':
770 fatal("special component %r should be a LibraryGroup" % (
773 if info.required_libraries:
774 fatal("special component %r must have empty %r list" % (
775 name, 'required_libraries'))
776 if info.add_to_library_groups:
777 fatal("special component %r must have empty %r list" % (
778 name, 'add_to_library_groups'))
780 info._is_special_group = True
783 info_map = dict((ci.name, ci) for ci in project.component_infos)
784 all_targets = find_special_group('all-targets')
785 native_group = find_special_group('Native')
786 native_codegen_group = find_special_group('NativeCodeGen')
787 engine_group = find_special_group('Engine')
789 # Set the enabled bit in all the target groups, and append to the
791 for ci in enable_targets:
792 all_targets.required_libraries.append(ci.name)
795 # If we have a native target, then that defines the native and
796 # native_codegen libraries.
797 if native_target and native_target.enabled:
798 native_group.required_libraries.append(native_target.name)
799 native_codegen_group.required_libraries.append(
800 '%sCodeGen' % native_target.name)
802 # If we have a native target with a JIT, use that for the engine. Otherwise,
803 # use the interpreter.
804 if native_target and native_target.enabled and native_target.has_jit:
805 engine_group.required_libraries.append('MCJIT')
806 engine_group.required_libraries.append(native_group.name)
808 engine_group.required_libraries.append('Interpreter')
811 from optparse import OptionParser, OptionGroup
812 parser = OptionParser("usage: %prog [options]")
814 group = OptionGroup(parser, "Input Options")
815 group.add_option("", "--source-root", dest="source_root", metavar="PATH",
816 help="Path to the LLVM source (inferred if not given)",
817 action="store", default=None)
818 group.add_option("", "--llvmbuild-source-root",
819 dest="llvmbuild_source_root",
821 "If given, an alternate path to search for LLVMBuild.txt files"),
822 action="store", default=None, metavar="PATH")
823 group.add_option("", "--build-root", dest="build_root", metavar="PATH",
824 help="Path to the build directory (if needed) [%default]",
825 action="store", default=None)
826 parser.add_option_group(group)
828 group = OptionGroup(parser, "Output Options")
829 group.add_option("", "--print-tree", dest="print_tree",
830 help="Print out the project component tree [%default]",
831 action="store_true", default=False)
832 group.add_option("", "--write-llvmbuild", dest="write_llvmbuild",
833 help="Write out the LLVMBuild.txt files to PATH",
834 action="store", default=None, metavar="PATH")
835 group.add_option("", "--write-library-table",
836 dest="write_library_table", metavar="PATH",
837 help="Write the C++ library dependency table to PATH",
838 action="store", default=None)
839 group.add_option("", "--write-cmake-fragment",
840 dest="write_cmake_fragment", metavar="PATH",
841 help="Write the CMake project information to PATH",
842 action="store", default=None)
843 group.add_option("", "--write-cmake-exports-fragment",
844 dest="write_cmake_exports_fragment", metavar="PATH",
845 help="Write the CMake exports information to PATH",
846 action="store", default=None)
847 group.add_option("", "--write-make-fragment",
848 dest="write_make_fragment", metavar="PATH",
849 help="Write the Makefile project information to PATH",
850 action="store", default=None)
851 group.add_option("", "--configure-target-def-file",
852 dest="configure_target_def_files",
853 help="""Configure the given file at SUBPATH (relative to
854 the inferred or given source root, and with a '.in' suffix) by replacing certain
855 substitution variables with lists of targets that support certain features (for
856 example, targets with AsmPrinters) and write the result to the build root (as
857 given by --build-root) at the same SUBPATH""",
858 metavar="SUBPATH", action="append", default=None)
859 parser.add_option_group(group)
861 group = OptionGroup(parser, "Configuration Options")
862 group.add_option("", "--native-target",
863 dest="native_target", metavar="NAME",
864 help=("Treat the named target as the 'native' one, if "
866 action="store", default=None)
867 group.add_option("", "--enable-targets",
868 dest="enable_targets", metavar="NAMES",
869 help=("Enable the given space or semi-colon separated "
870 "list of targets, or all targets if not present"),
871 action="store", default=None)
872 group.add_option("", "--enable-optional-components",
873 dest="optional_components", metavar="NAMES",
874 help=("Enable the given space or semi-colon separated "
875 "list of optional components"),
876 action="store", default="")
877 parser.add_option_group(group)
879 (opts, args) = parser.parse_args()
881 # Determine the LLVM source path, if not given.
882 source_root = opts.source_root
884 if not os.path.exists(os.path.join(source_root, 'lib', 'IR',
886 parser.error('invalid LLVM source root: %r' % source_root)
888 llvmbuild_path = os.path.dirname(__file__)
889 llvm_build_path = os.path.dirname(llvmbuild_path)
890 utils_path = os.path.dirname(llvm_build_path)
891 source_root = os.path.dirname(utils_path)
892 if not os.path.exists(os.path.join(source_root, 'lib', 'IR',
894 parser.error('unable to infer LLVM source root, please specify')
896 # Construct the LLVM project information.
897 llvmbuild_source_root = opts.llvmbuild_source_root or source_root
898 project_info = LLVMProjectInfo.load_from_path(
899 source_root, llvmbuild_source_root)
901 # Add the magic target based components.
902 add_magic_target_components(parser, project_info, opts)
904 # Validate the project component info.
905 project_info.validate_components()
907 # Print the component tree, if requested.
909 project_info.print_tree()
911 # Write out the components, if requested. This is useful for auto-upgrading
913 if opts.write_llvmbuild:
914 project_info.write_components(opts.write_llvmbuild)
916 # Write out the required library table, if requested.
917 if opts.write_library_table:
918 project_info.write_library_table(opts.write_library_table,
919 opts.optional_components)
921 # Write out the make fragment, if requested.
922 if opts.write_make_fragment:
923 project_info.write_make_fragment(opts.write_make_fragment)
925 # Write out the cmake fragment, if requested.
926 if opts.write_cmake_fragment:
927 project_info.write_cmake_fragment(opts.write_cmake_fragment,
928 opts.optional_components)
929 if opts.write_cmake_exports_fragment:
930 project_info.write_cmake_exports_fragment(opts.write_cmake_exports_fragment,
931 opts.optional_components)
933 # Configure target definition files, if requested.
934 if opts.configure_target_def_files:
935 # Verify we were given a build root.
936 if not opts.build_root:
937 parser.error("must specify --build-root when using "
938 "--configure-target-def-file")
940 # Create the substitution list.
941 available_targets = [ci for ci in project_info.component_infos
942 if ci.type_name == 'TargetGroup']
944 ("@LLVM_ENUM_TARGETS@",
945 ' '.join('LLVM_TARGET(%s)' % ci.name
946 for ci in available_targets)),
947 ("@LLVM_ENUM_ASM_PRINTERS@",
948 ' '.join('LLVM_ASM_PRINTER(%s)' % ci.name
949 for ci in available_targets
950 if ci.has_asmprinter)),
951 ("@LLVM_ENUM_ASM_PARSERS@",
952 ' '.join('LLVM_ASM_PARSER(%s)' % ci.name
953 for ci in available_targets
954 if ci.has_asmparser)),
955 ("@LLVM_ENUM_DISASSEMBLERS@",
956 ' '.join('LLVM_DISASSEMBLER(%s)' % ci.name
957 for ci in available_targets
958 if ci.has_disassembler))]
960 # Configure the given files.
961 for subpath in opts.configure_target_def_files:
962 inpath = os.path.join(source_root, subpath + '.in')
963 outpath = os.path.join(opts.build_root, subpath)
964 result = configutil.configure_file(inpath, outpath, substitutions)
966 note("configured file %r hasn't changed" % outpath)
968 if __name__=='__main__':