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llvm-build: Add initial code for --write-make-fragment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143661 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -48,6 +48,13 @@ component combinations.
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Write out new I<LLVMBuild.txt> files based on the loaded components. This is
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Write out new I<LLVMBuild.txt> files based on the loaded components. This is
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useful for auto-upgrading the schema of the files.
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useful for auto-upgrading the schema of the files.
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=item B<--write-make-fragment>
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Write out the LLVMBuild in the form of a Makefile fragment, so it can easily be
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consumed by a Make based build system. The exact contents and format of this
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file are closely tied to how LLVMBuild is integrated with the Makefiles, see
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LLVM's Makefile.rules.
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=item B<--llvmbuild-source-root>=I<PATH>
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=item B<--llvmbuild-source-root>=I<PATH>
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If given, expect the I<LLVMBuild> files for the project to be rooted at the
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If given, expect the I<LLVMBuild> files for the project to be rooted at the
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@ -286,6 +286,94 @@ class LLVMProjectInfo(object):
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print >>f, '};'
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print >>f, '};'
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f.close()
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f.close()
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def write_make_fragment(self, output_path):
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"""
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write_make_fragment(output_path) -> None
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Generate a Makefile fragment which includes all of the collated
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LLVMBuild information in a format that is easily digestible by a
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Makefile. The exact contents of this are closely tied to how the LLVM
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Makefiles integrate LLVMBuild, see Makefile.rules in the top-level.
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"""
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# Construct a list of all the dependencies of the Makefile fragment
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# itself. These include all the LLVMBuild files themselves, as well as
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# all of our own sources.
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dependencies = []
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for ci in self.component_infos:
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dependencies.append(os.path.join(self.source_root, ci.subpath[1:]))
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# Gather the list of necessary sources by just finding all loaded
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# modules that are inside the LLVM source tree.
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for module in sys.modules.values():
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# Find the module path.
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if not hasattr(module, '__file__'):
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continue
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path = getattr(module, '__file__')
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if not path:
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continue
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# Strip off any compiled suffix.
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if os.path.splitext(path)[1] in ['.pyc', '.pyo', '.pyd']:
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path = path[:-1]
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# If the path exists and is in the source tree, consider it a
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# dependency.
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if (path.startswith(self.source_root) and os.path.exists(path)):
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dependencies.append(path)
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# Write out the Makefile fragment.
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f = open(output_path, 'w')
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# Write the header.
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header_fmt = '\
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#===-- %s - LLVMBuild Configuration for LLVM %s-*- Makefile -*--===#'
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header_name = os.path.basename(output_path)
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header_pad = '-' * (80 - len(header_fmt % (header_name, '')))
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header_string = header_fmt % (header_name, header_pad)
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print >>f, """\
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%s
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#
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# The LLVM Compiler Infrastructure
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#
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# This file is distributed under the University of Illinois Open Source
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# License. See LICENSE.TXT for details.
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#
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#===------------------------------------------------------------------------===#
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#
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# This file contains the LLVMBuild project information in a format easily
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# consumed by the Makefile based build system.
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#
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# This file is autogenerated by llvm-build, do not edit!
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#
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#===------------------------------------------------------------------------===#
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""" % header_string
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# Write the dependencies for the fragment.
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#
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# FIXME: Technically, we need to properly quote for Make here.
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print >>f, """\
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# Clients must explicitly enable LLVMBUILD_INCLUDE_DEPENDENCIES to get
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# these dependencies. This is a compromise to help improve the
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# performance of recursive Make systems."""
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print >>f, 'ifeq ($(LLVMBUILD_INCLUDE_DEPENDENCIES),1)'
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print >>f, "# The dependencies for this Makefile fragment itself."
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print >>f, "%s: \\" % (output_path,)
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for dep in dependencies:
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print >>f, "\t%s \\" % (dep,)
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print >>f
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# Generate dummy rules for each of the dependencies, so that things
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# continue to work correctly if any of those files are moved or removed.
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print >>f, """\
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# The dummy targets to allow proper regeneration even when files are moved or
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# removed."""
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for dep in dependencies:
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print >>f, "%s:" % (dep,)
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print >>f, 'endif'
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f.close()
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def main():
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def main():
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from optparse import OptionParser, OptionGroup
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from optparse import OptionParser, OptionGroup
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parser = OptionParser("usage: %prog [options]")
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parser = OptionParser("usage: %prog [options]")
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@ -302,6 +390,10 @@ def main():
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dest="write_library_table", metavar="PATH",
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dest="write_library_table", metavar="PATH",
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help="Write the C++ library dependency table to PATH",
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help="Write the C++ library dependency table to PATH",
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action="store", default=None)
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action="store", default=None)
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parser.add_option("", "--write-make-fragment",
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dest="write_make_fragment", metavar="PATH",
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help="Write the Makefile project information to PATH",
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action="store", default=None)
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parser.add_option("", "--llvmbuild-source-root",
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parser.add_option("", "--llvmbuild-source-root",
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dest="llvmbuild_source_root",
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dest="llvmbuild_source_root",
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help=(
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help=(
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@ -342,5 +434,9 @@ def main():
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if opts.write_library_table:
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if opts.write_library_table:
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project_info.write_library_table(opts.write_library_table)
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project_info.write_library_table(opts.write_library_table)
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# Write out the required librariy, if requested.
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if opts.write_make_fragment:
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project_info.write_make_fragment(opts.write_make_fragment)
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if __name__=='__main__':
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if __name__=='__main__':
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main()
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main()
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