208 lines
6.8 KiB
Python
208 lines
6.8 KiB
Python
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# Copyright 2016 The Cartographer Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""A dumb CMakeLists.txt generator that relies on source name conventions."""
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import os
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from os import path
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import re
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def MakeRelative(filename, directory):
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absolute_directory = path.realpath(directory)
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filename = path.realpath(filename)
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return path.relpath(filename, absolute_directory)
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def MaybeUseCmakeFile(filename):
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cmake_filename = filename + ".cmake"
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return cmake_filename if os.path.exists(cmake_filename) else filename
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class Target(object):
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"""Container for data for a cmake target."""
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def __init__(self, target_type, name, directory, srcs, hdrs):
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self.type = target_type
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self.name = name
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self.directory = directory
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self.srcs = srcs
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self.hdrs = hdrs
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self.depends = set()
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self.uses = set()
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def __repr__(self):
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return "%s(%s, nsrcs:%s, %s)" % (self.type, self.name, len(self.srcs),
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self.depends)
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def Format(self, directory):
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"""Formats the target for writing into a CMakeLists.txt file."""
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lines = ["%s(%s" % (self.type, self.name),]
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for use in sorted(self.uses):
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lines.append(" " + use)
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if self.srcs:
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lines.append(" SRCS")
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lines.extend(" " + MakeRelative(s, directory)
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for s in sorted(self.srcs))
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if self.hdrs:
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lines.append(" HDRS")
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lines.extend(" " + MakeRelative(s, directory)
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for s in sorted(self.hdrs))
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if self.depends:
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lines.append(" DEPENDS")
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lines.extend(" " + s for s in sorted(self.depends))
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lines.append(")")
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return "\n".join(lines)
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def ExtractCartographerIncludes(source):
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"""Returns all locally included files."""
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includes = set()
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for line in open(MaybeUseCmakeFile(source)):
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if source.endswith(".proto"):
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match = re.match(r'^import "(cartographer/[^"]+)', line)
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else:
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match = re.match(r'^#include "(cartographer/[^"]+)"', line)
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if match:
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includes.add(match.group(1))
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return includes
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def ExtractUses(source):
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"""Finds the options for the third_party libraries used."""
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uses = set()
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for line in open(MaybeUseCmakeFile(source)):
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if re.match(r'^#include "Eigen/', line):
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uses.add("USES_EIGEN")
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if re.match(r"^#include <lua.hpp>", line):
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uses.add("USES_LUA")
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if re.match(r'^#include "(ceres|glog)/', line):
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# We abuse Ceres CFLAGS for other Google libraries that we all depend on.
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# The alternative is to ship and maintain our own Find*.cmake files which
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# is not appealing.
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uses.add("USES_CERES")
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if re.match(r"^#include <boost/", line):
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uses.add("USES_BOOST")
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if re.match(r'^#include "webp/', line):
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uses.add("USES_WEBP")
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return uses
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def FindSourceFiles(basedir):
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sources = set()
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for (directory, _, filenames) in os.walk(basedir):
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for filename in filenames:
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ext = path.splitext(filename)[-1]
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if ext in [".h", ".cc", ".proto"]:
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sources.add(path.join(directory, filename))
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elif filename.endswith(".h.cmake"):
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sources.add(path.join(directory, path.splitext(filename)[0]))
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yield (directory, sources)
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def ReadFileWithoutGoogleTargets(filename):
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if path.exists(filename):
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ignoring = False
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for line in open(filename):
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if line.startswith("google_"):
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ignoring = True
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elif line == ")" and ignoring:
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ignoring = False
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elif not ignoring:
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yield line.rstrip()
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def main():
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root_directory = os.path.realpath(os.path.join(
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os.path.dirname(__file__), os.path.pardir, "cartographer"))
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targets_by_src = {}
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targets = []
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base_directory = path.realpath(path.join(root_directory, path.pardir))
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directories = set()
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def AddTarget(target_type, name, directory, srcs, hdrs):
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"""Adds a new target to 'targets' and updates 'targets_by_src'."""
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target = Target(target_type, name, directory, srcs, hdrs)
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targets.append(target)
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for s in srcs + hdrs:
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relative_s = MakeRelative(s, base_directory)
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targets_by_src[relative_s] = target
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if s.endswith(".proto"):
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proto_stem = os.path.splitext(relative_s)[0]
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targets_by_src[proto_stem + ".pb.h"] = target
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targets_by_src[proto_stem + ".pb.cc"] = target
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directories.add(directory)
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for (directory, sources) in FindSourceFiles(root_directory):
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module_name = path.relpath(directory,
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path.realpath(root_directory)).replace("/", "_")
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headers = set(fn for fn in sources if fn.endswith(".h"))
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sources -= headers
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for h in sorted(headers):
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srcs = []
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name = module_name + "_" + path.basename(path.splitext(h)[0])
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cc_file = path.splitext(h)[0] + ".cc"
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if cc_file in sources:
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sources.remove(cc_file)
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srcs.append(cc_file)
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AddTarget("google_library", name, directory, srcs, [h])
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tests = set(fn for fn in sources if fn.endswith("_test.cc"))
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sources -= tests
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for c in sorted(tests):
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name = module_name + "_" + path.basename(path.splitext(c)[0])
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AddTarget("google_test", name, directory, [c], [])
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protos = set(fn for fn in sources if fn.endswith(".proto"))
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sources -= protos
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for c in sorted(protos):
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name = module_name + "_" + path.basename(path.splitext(c)[0])
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AddTarget("google_proto_library", name, directory, [c], [])
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assert (not sources), "Remaining sources without target: %s" % sources
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# Write the CMakeLists.txt files.
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for directory in directories:
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targets_in_directory = [t for t in targets if t.directory == directory]
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for target in targets_in_directory:
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for src in target.srcs + target.hdrs:
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for header in ExtractCartographerIncludes(src):
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dependant = targets_by_src[header]
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if dependant.name == target.name:
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continue
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target.depends.add(dependant.name)
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target.uses.update(ExtractUses(src))
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cmake_file = path.join(directory, "CMakeLists.txt")
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lines = list(ReadFileWithoutGoogleTargets(cmake_file))
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with open(cmake_file, "w") as outfile:
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if lines:
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outfile.write("\n".join(lines))
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outfile.write("\n")
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outfile.write("\n\n".join(t.Format(directory) for t in
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targets_in_directory))
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outfile.write("\n")
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if __name__ == "__main__":
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main()
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