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llvm/utils/llvm-build/llvmbuild/main.py
Chandler Carruth 6b547686c5 Update the file headers across all of the LLVM projects in the monorepo 
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351636 91177308-0d34-0410-b5e6-96231b3b80d8
2019-01-19 08:50:56 +00:00

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from __future__ import absolute_import
import filecmp
import os
import sys
import llvmbuild.componentinfo as componentinfo
from llvmbuild.util import fatal, note
###
def cmake_quote_string(value):
"""
cmake_quote_string(value) -> str
Return a quoted form of the given value that is suitable for use in CMake
language files.
"""
# Currently, we only handle escaping backslashes.
value = value.replace("\\", "\\\\")
return value
def cmake_quote_path(value):
"""
cmake_quote_path(value) -> str
Return a quoted form of the given value that is suitable for use in CMake
language files.
"""
# CMake has a bug in it's Makefile generator that doesn't properly quote
# strings it generates. So instead of using proper quoting, we just use "/"
# style paths. Currently, we only handle escaping backslashes.
value = value.replace("\\", "/")
return value
def make_install_dir(path):
"""
make_install_dir(path) -> None
Create the given directory path for installation, including any parents.
"""
# os.makedirs considers it an error to be called with an existent path.
if not os.path.exists(path):
os.makedirs(path)
###
class LLVMProjectInfo(object):
@staticmethod
def load_infos_from_path(llvmbuild_source_root):
def recurse(subpath):
# Load the LLVMBuild file.
llvmbuild_path = os.path.join(llvmbuild_source_root + subpath,
'LLVMBuild.txt')
if not os.path.exists(llvmbuild_path):
fatal("missing LLVMBuild.txt file at: %r" % (llvmbuild_path,))
# Parse the components from it.
common,info_iter = componentinfo.load_from_path(llvmbuild_path,
subpath)
for info in info_iter:
yield info
# Recurse into the specified subdirectories.
for subdir in common.get_list("subdirectories"):
for item in recurse(os.path.join(subpath, subdir)):
yield item
return recurse("/")
@staticmethod
def load_from_path(source_root, llvmbuild_source_root):
infos = list(
LLVMProjectInfo.load_infos_from_path(llvmbuild_source_root))
return LLVMProjectInfo(source_root, infos)
def __init__(self, source_root, component_infos):
# Store our simple ivars.
self.source_root = source_root
self.component_infos = list(component_infos)
self.component_info_map = None
self.ordered_component_infos = None
def validate_components(self):
"""validate_components() -> None
Validate that the project components are well-defined. Among other
things, this checks that:
- Components have valid references.
- Components references do not form cycles.
We also construct the map from component names to info, and the
topological ordering of components.
"""
# Create the component info map and validate that component names are
# unique.
self.component_info_map = {}
for ci in self.component_infos:
existing = self.component_info_map.get(ci.name)
if existing is not None:
# We found a duplicate component name, report it and error out.
fatal("found duplicate component %r (at %r and %r)" % (
ci.name, ci.subpath, existing.subpath))
self.component_info_map[ci.name] = ci
# Disallow 'all' as a component name, which is a special case.
if 'all' in self.component_info_map:
fatal("project is not allowed to define 'all' component")
# Add the root component.
if '$ROOT' in self.component_info_map:
fatal("project is not allowed to define $ROOT component")
self.component_info_map['$ROOT'] = componentinfo.GroupComponentInfo(
'/', '$ROOT', None)
self.component_infos.append(self.component_info_map['$ROOT'])
# Topologically order the component information according to their
# component references.
def visit_component_info(ci, current_stack, current_set):
# Check for a cycles.
if ci in current_set:
# We found a cycle, report it and error out.
cycle_description = ' -> '.join(
'%r (%s)' % (ci.name, relation)
for relation,ci in current_stack)
fatal("found cycle to %r after following: %s -> %s" % (
ci.name, cycle_description, ci.name))
# If we have already visited this item, we are done.
if ci not in components_to_visit:
return
# Otherwise, mark the component info as visited and traverse.
components_to_visit.remove(ci)
# Validate the parent reference, which we treat specially.
if ci.parent is not None:
parent = self.component_info_map.get(ci.parent)
if parent is None:
fatal("component %r has invalid reference %r (via %r)" % (
ci.name, ci.parent, 'parent'))
ci.set_parent_instance(parent)
for relation,referent_name in ci.get_component_references():
# Validate that the reference is ok.
referent = self.component_info_map.get(referent_name)
if referent is None:
fatal("component %r has invalid reference %r (via %r)" % (
ci.name, referent_name, relation))
# Visit the reference.
current_stack.append((relation,ci))
current_set.add(ci)
visit_component_info(referent, current_stack, current_set)
current_set.remove(ci)
current_stack.pop()
# Finally, add the component info to the ordered list.
self.ordered_component_infos.append(ci)
# FIXME: We aren't actually correctly checking for cycles along the
# parent edges. Haven't decided how I want to handle this -- I thought
# about only checking cycles by relation type. If we do that, it falls
# out easily. If we don't, we should special case the check.
self.ordered_component_infos = []
components_to_visit = sorted(
set(self.component_infos),
key = lambda c: c.name)
while components_to_visit:
visit_component_info(components_to_visit[0], [], set())
# Canonicalize children lists.
for c in self.ordered_component_infos:
c.children.sort(key = lambda c: c.name)
def print_tree(self):
def visit(node, depth = 0):
print('%s%-40s (%s)' % (' '*depth, node.name, node.type_name))
for c in node.children:
visit(c, depth + 1)
visit(self.component_info_map['$ROOT'])
def write_components(self, output_path):
# Organize all the components by the directory their LLVMBuild file
# should go in.
info_basedir = {}
for ci in self.component_infos:
# Ignore the $ROOT component.
if ci.parent is None:
continue
info_basedir[ci.subpath] = info_basedir.get(ci.subpath, []) + [ci]
# Compute the list of subdirectories to scan.
subpath_subdirs = {}
for ci in self.component_infos:
# Ignore root components.
if ci.subpath == '/':
continue
# Otherwise, append this subpath to the parent list.
parent_path = os.path.dirname(ci.subpath)
subpath_subdirs[parent_path] = parent_list = subpath_subdirs.get(
parent_path, set())
parent_list.add(os.path.basename(ci.subpath))
# Generate the build files.
for subpath, infos in info_basedir.items():
# Order the components by name to have a canonical ordering.
infos.sort(key = lambda ci: ci.name)
# Format the components into llvmbuild fragments.
fragments = []
# Add the common fragments.
subdirectories = subpath_subdirs.get(subpath)
if subdirectories:
fragment = """\
subdirectories = %s
""" % (" ".join(sorted(subdirectories)),)
fragments.append(("common", fragment))
# Add the component fragments.
num_common_fragments = len(fragments)
for ci in infos:
fragment = ci.get_llvmbuild_fragment()
if fragment is None:
continue
name = "component_%d" % (len(fragments) - num_common_fragments)
fragments.append((name, fragment))
if not fragments:
continue
assert subpath.startswith('/')
directory_path = os.path.join(output_path, subpath[1:])
# Create the directory if it does not already exist.
if not os.path.exists(directory_path):
os.makedirs(directory_path)
# In an effort to preserve comments (which aren't parsed), read in
# the original file and extract the comments. We only know how to
# associate comments that prefix a section name.
f = open(infos[0]._source_path)
comments_map = {}
comment_block = ""
for ln in f:
if ln.startswith(';'):
comment_block += ln
elif ln.startswith('[') and ln.endswith(']\n'):
comments_map[ln[1:-2]] = comment_block
else:
comment_block = ""
f.close()
# Create the LLVMBuild fil[e.
file_path = os.path.join(directory_path, 'LLVMBuild.txt')
f = open(file_path, "w")
# Write the header.
header_fmt = ';===- %s %s-*- Conf -*--===;'
header_name = '.' + os.path.join(subpath, 'LLVMBuild.txt')
header_pad = '-' * (80 - len(header_fmt % (header_name, '')))
header_string = header_fmt % (header_name, header_pad)
f.write("""\
%s
;
; Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
; See https://llvm.org/LICENSE.txt for license information.
; SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
;
;===------------------------------------------------------------------------===;
;
; This is an LLVMBuild description file for the components in this subdirectory.
;
; For more information on the LLVMBuild system, please see:
;
; http://llvm.org/docs/LLVMBuild.html
;
;===------------------------------------------------------------------------===;
""" % header_string)
# Write out each fragment.each component fragment.
for name,fragment in fragments:
comment = comments_map.get(name)
if comment is not None:
f.write(comment)
f.write("[%s]\n" % name)
f.write(fragment)
if fragment is not fragments[-1][1]:
f.write('\n')
f.close()
def write_library_table(self, output_path, enabled_optional_components):
# Write out the mapping from component names to required libraries.
#
# We do this in topological order so that we know we can append the
# dependencies for added library groups.
entries = {}
for c in self.ordered_component_infos:
# Skip optional components which are not enabled.
if c.type_name == 'OptionalLibrary' \
and c.name not in enabled_optional_components:
continue
# Skip target groups which are not enabled.
tg = c.get_parent_target_group()
if tg and not tg.enabled:
continue
# Only certain components are in the table.
if c.type_name not in ('Library', 'OptionalLibrary', \
'LibraryGroup', 'TargetGroup'):
continue
# Compute the llvm-config "component name". For historical reasons,
# this is lowercased based on the library name.
llvmconfig_component_name = c.get_llvmconfig_component_name()
# Get the library name, or None for LibraryGroups.
if c.type_name == 'Library' or c.type_name == 'OptionalLibrary':
library_name = c.get_prefixed_library_name()
is_installed = c.installed
else:
library_name = None
is_installed = True
# Get the component names of all the required libraries.
required_llvmconfig_component_names = [
self.component_info_map[dep].get_llvmconfig_component_name()
for dep in c.required_libraries]
# Insert the entries for library groups we should add to.
for dep in c.add_to_library_groups:
entries[dep][2].append(llvmconfig_component_name)
# Add the entry.
entries[c.name] = (llvmconfig_component_name, library_name,
required_llvmconfig_component_names,
is_installed)
# Convert to a list of entries and sort by name.
entries = list(entries.values())
# Create an 'all' pseudo component. We keep the dependency list small by
# only listing entries that have no other dependents.
root_entries = set(e[0] for e in entries)
for _,_,deps,_ in entries:
root_entries -= set(deps)
entries.append(('all', None, root_entries, True))
entries.sort()
# Compute the maximum number of required libraries, plus one so there is
# always a sentinel.
max_required_libraries = max(len(deps)
for _,_,deps,_ in entries) + 1
# Write out the library table.
make_install_dir(os.path.dirname(output_path))
f = open(output_path+'.new', 'w')
f.write("""\
//===- llvm-build generated file --------------------------------*- C++ -*-===//
//
// Component Library Dependency Table
//
// Automatically generated file, do not edit!
//
//===----------------------------------------------------------------------===//
""")
f.write('struct AvailableComponent {\n')
f.write(' /// The name of the component.\n')
f.write(' const char *Name;\n')
f.write('\n')
f.write(' /// The name of the library for this component (or NULL).\n')
f.write(' const char *Library;\n')
f.write('\n')
f.write(' /// Whether the component is installed.\n')
f.write(' bool IsInstalled;\n')
f.write('\n')
f.write('\
/// The list of libraries required when linking this component.\n')
f.write(' const char *RequiredLibraries[%d];\n' % (
max_required_libraries))
f.write('} AvailableComponents[%d] = {\n' % len(entries))
for name,library_name,required_names,is_installed in entries:
if library_name is None:
library_name_as_cstr = 'nullptr'
else:
library_name_as_cstr = '"%s"' % library_name
if is_installed:
is_installed_as_cstr = 'true'
else:
is_installed_as_cstr = 'false'
f.write(' { "%s", %s, %s, { %s } },\n' % (
name, library_name_as_cstr, is_installed_as_cstr,
', '.join('"%s"' % dep
for dep in required_names)))
f.write('};\n')
f.close()
if not os.path.isfile(output_path):
os.rename(output_path+'.new', output_path)
elif filecmp.cmp(output_path, output_path+'.new'):
os.remove(output_path+'.new')
else:
os.remove(output_path)
os.rename(output_path+'.new', output_path)
def get_required_libraries_for_component(self, ci, traverse_groups = False):
"""
get_required_libraries_for_component(component_info) -> iter
Given a Library component info descriptor, return an iterator over all
of the directly required libraries for linking with this component. If
traverse_groups is True, then library and target groups will be
traversed to include their required libraries.
"""
assert ci.type_name in ('Library', 'OptionalLibrary', 'LibraryGroup', 'TargetGroup')
for name in ci.required_libraries:
# Get the dependency info.
dep = self.component_info_map[name]
# If it is a library, yield it.
if dep.type_name == 'Library' or dep.type_name == 'OptionalLibrary':
yield dep
continue
# Otherwise if it is a group, yield or traverse depending on what
# was requested.
if dep.type_name in ('LibraryGroup', 'TargetGroup'):
if not traverse_groups:
yield dep
continue
for res in self.get_required_libraries_for_component(dep, True):
yield res
def get_fragment_dependencies(self):
"""
get_fragment_dependencies() -> iter
Compute the list of files (as absolute paths) on which the output
fragments depend (i.e., files for which a modification should trigger a
rebuild of the fragment).
"""
# Construct a list of all the dependencies of the Makefile fragment
# itself. These include all the LLVMBuild files themselves, as well as
# all of our own sources.
#
# Many components may come from the same file, so we make sure to unique
# these.
build_paths = set()
for ci in self.component_infos:
p = os.path.join(self.source_root, ci.subpath[1:], 'LLVMBuild.txt')
if p not in build_paths:
yield p
build_paths.add(p)
# Gather the list of necessary sources by just finding all loaded
# modules that are inside the LLVM source tree.
for module in sys.modules.values():
# Find the module path.
if not hasattr(module, '__file__'):
continue
path = getattr(module, '__file__')
if not path:
continue
# Strip off any compiled suffix.
if os.path.splitext(path)[1] in ['.pyc', '.pyo', '.pyd']:
path = path[:-1]
# If the path exists and is in the source tree, consider it a
# dependency.
if (path.startswith(self.source_root) and os.path.exists(path)):
yield path
def foreach_cmake_library(self, f,
enabled_optional_components,
skip_disabled,
skip_not_installed):
for ci in self.ordered_component_infos:
# Skip optional components which are not enabled.
if ci.type_name == 'OptionalLibrary' \
and ci.name not in enabled_optional_components:
continue
# We only write the information for libraries currently.
if ci.type_name not in ('Library', 'OptionalLibrary'):
continue
# Skip disabled targets.
if skip_disabled:
tg = ci.get_parent_target_group()
if tg and not tg.enabled:
continue
# Skip targets that will not be installed
if skip_not_installed and not ci.installed:
continue
f(ci)
def write_cmake_fragment(self, output_path, enabled_optional_components):
"""
write_cmake_fragment(output_path) -> None
Generate a CMake fragment which includes all of the collated LLVMBuild
information in a format that is easily digestible by a CMake. The exact
contents of this are closely tied to how the CMake configuration
integrates LLVMBuild, see CMakeLists.txt in the top-level.
"""
dependencies = list(self.get_fragment_dependencies())
# Write out the CMake fragment.
make_install_dir(os.path.dirname(output_path))
f = open(output_path, 'w')
# Write the header.
header_fmt = '\
#===-- %s - LLVMBuild Configuration for LLVM %s-*- CMake -*--===#'
header_name = os.path.basename(output_path)
header_pad = '-' * (80 - len(header_fmt % (header_name, '')))
header_string = header_fmt % (header_name, header_pad)
f.write("""\
%s
#
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#
#===------------------------------------------------------------------------===#
#
# This file contains the LLVMBuild project information in a format easily
# consumed by the CMake based build system.
#
# This file is autogenerated by llvm-build, do not edit!
#
#===------------------------------------------------------------------------===#
""" % header_string)
# Write the dependency information in the best way we can.
f.write("""
# LLVMBuild CMake fragment dependencies.
#
# CMake has no builtin way to declare that the configuration depends on
# a particular file. However, a side effect of configure_file is to add
# said input file to CMake's internal dependency list. So, we use that
# and a dummy output file to communicate the dependency information to
# CMake.
#
# FIXME: File a CMake RFE to get a properly supported version of this
# feature.
""")
for dep in dependencies:
f.write("""\
configure_file(\"%s\"
${CMAKE_CURRENT_BINARY_DIR}/DummyConfigureOutput)\n""" % (
cmake_quote_path(dep),))
# Write the properties we use to encode the required library dependency
# information in a form CMake can easily use directly.
f.write("""
# Explicit library dependency information.
#
# The following property assignments effectively create a map from component
# names to required libraries, in a way that is easily accessed from CMake.
""")
self.foreach_cmake_library(
lambda ci:
f.write("""\
set_property(GLOBAL PROPERTY LLVMBUILD_LIB_DEPS_%s %s)\n""" % (
ci.get_prefixed_library_name(), " ".join(sorted(
dep.get_prefixed_library_name()
for dep in self.get_required_libraries_for_component(ci)))))
,
enabled_optional_components,
skip_disabled = False,
skip_not_installed = False # Dependency info must be emitted for internals libs too
)
f.close()
def write_cmake_exports_fragment(self, output_path, enabled_optional_components):
"""
write_cmake_exports_fragment(output_path) -> None
Generate a CMake fragment which includes LLVMBuild library
dependencies expressed similarly to how CMake would write
them via install(EXPORT).
"""
dependencies = list(self.get_fragment_dependencies())
# Write out the CMake exports fragment.
make_install_dir(os.path.dirname(output_path))
f = open(output_path, 'w')
f.write("""\
# Explicit library dependency information.
#
# The following property assignments tell CMake about link
# dependencies of libraries imported from LLVM.
""")
self.foreach_cmake_library(
lambda ci:
f.write("""\
set_property(TARGET %s PROPERTY IMPORTED_LINK_INTERFACE_LIBRARIES %s)\n""" % (
ci.get_prefixed_library_name(), " ".join(sorted(
dep.get_prefixed_library_name()
for dep in self.get_required_libraries_for_component(ci)))))
,
enabled_optional_components,
skip_disabled = True,
skip_not_installed = True # Do not export internal libraries like gtest
)
f.close()
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 "all-targets", "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:
# We support both space separated and semi-colon separated lists.
if opts.enable_targets == '':
enable_target_names = []
elif ' ' in opts.enable_targets:
enable_target_names = opts.enable_targets.split()
else:
enable_target_names = opts.enable_targets.split(';')
enable_targets = []
for name in enable_target_names:
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'))
info._is_special_group = True
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('MCJIT')
engine_group.required_libraries.append(native_group.name)
else:
engine_group.required_libraries.append('Interpreter')
def main():
from optparse import OptionParser, OptionGroup
parser = OptionParser("usage: %prog [options]")
group = OptionGroup(parser, "Input Options")
group.add_option("", "--source-root", dest="source_root", metavar="PATH",
help="Path to the LLVM source (inferred if not given)",
action="store", default=None)
group.add_option("", "--llvmbuild-source-root",
dest="llvmbuild_source_root",
help=(
"If given, an alternate path to search for LLVMBuild.txt files"),
action="store", default=None, metavar="PATH")
parser.add_option_group(group)
group = OptionGroup(parser, "Output Options")
group.add_option("", "--print-tree", dest="print_tree",
help="Print out the project component tree [%default]",
action="store_true", default=False)
group.add_option("", "--write-llvmbuild", dest="write_llvmbuild",
help="Write out the LLVMBuild.txt files to PATH",
action="store", default=None, metavar="PATH")
group.add_option("", "--write-library-table",
dest="write_library_table", metavar="PATH",
help="Write the C++ library dependency table to PATH",
action="store", default=None)
group.add_option("", "--write-cmake-fragment",
dest="write_cmake_fragment", metavar="PATH",
help="Write the CMake project information to PATH",
action="store", default=None)
group.add_option("", "--write-cmake-exports-fragment",
dest="write_cmake_exports_fragment", metavar="PATH",
help="Write the CMake exports information to PATH",
action="store", default=None)
parser.add_option_group(group)
group = OptionGroup(parser, "Configuration Options")
group.add_option("", "--native-target",
dest="native_target", metavar="NAME",
help=("Treat the named target as the 'native' one, if "
"given [%default]"),
action="store", default=None)
group.add_option("", "--enable-targets",
dest="enable_targets", metavar="NAMES",
help=("Enable the given space or semi-colon separated "
"list of targets, or all targets if not present"),
action="store", default=None)
group.add_option("", "--enable-optional-components",
dest="optional_components", metavar="NAMES",
help=("Enable the given space or semi-colon separated "
"list of optional components"),
action="store", default="")
parser.add_option_group(group)
(opts, args) = parser.parse_args()
# Determine the LLVM source path, if not given.
source_root = opts.source_root
if source_root:
if not os.path.exists(os.path.join(source_root, 'lib', 'IR',
'Function.cpp')):
parser.error('invalid LLVM source root: %r' % source_root)
else:
llvmbuild_path = os.path.dirname(__file__)
llvm_build_path = os.path.dirname(llvmbuild_path)
utils_path = os.path.dirname(llvm_build_path)
source_root = os.path.dirname(utils_path)
if not os.path.exists(os.path.join(source_root, 'lib', 'IR',
'Function.cpp')):
parser.error('unable to infer LLVM source root, please specify')
# Construct the LLVM project information.
llvmbuild_source_root = opts.llvmbuild_source_root or source_root
project_info = LLVMProjectInfo.load_from_path(
source_root, llvmbuild_source_root)
# Add the magic target based components.
add_magic_target_components(parser, project_info, opts)
# Validate the project component info.
project_info.validate_components()
# Print the component tree, if requested.
if opts.print_tree:
project_info.print_tree()
# Write out the components, if requested. This is useful for auto-upgrading
# the schema.
if opts.write_llvmbuild:
project_info.write_components(opts.write_llvmbuild)
# Write out the required library table, if requested.
if opts.write_library_table:
project_info.write_library_table(opts.write_library_table,
opts.optional_components)
# Write out the cmake fragment, if requested.
if opts.write_cmake_fragment:
project_info.write_cmake_fragment(opts.write_cmake_fragment,
opts.optional_components)
if opts.write_cmake_exports_fragment:
project_info.write_cmake_exports_fragment(opts.write_cmake_exports_fragment,
opts.optional_components)
if __name__=='__main__':
main()
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