text: from conans import ConanFile, CMake, tools
  import os
  
  def version_to_date(ver):
      return ver[0:4] + "-" + ver[4:6] + "-" + ver[6:8]
  
  class Re2Conan(ConanFile):
      name = "re2"
      description = "Fast, safe, thread-friendly regular expression library"
      topics = ("conan", "re2", "regex")
      url = "https://github.com/conan-io/conan-center-index"
      homepage = "https://github.com/google/re2"
      license = "BSD-3-Clause"
  
      exports_sources = ["CMakeLists.txt"]
      generators = "cmake"
  
      settings = "os", "arch", "build_type", "compiler"
      options = {
          "shared": [True, False],
          "fPIC": [True, False]
      }
      default_options = {
          "shared": False,
          "fPIC": True
      }
  
      _cmake = None
  
      @property
      def _source_subfolder(self):
          return "source_subfolder"
  
      @property
      def _build_subfolder(self):
          return "build_subfolder"
  
      def config_options(self):
          if self.settings.os == "Windows":
              del self.options.fPIC
  
      def configure(self):
          if self.settings.compiler.cppstd:
              tools.check_min_cppstd(self, 11)
  
      def source(self):
          tools.get(**self.conan_data["sources"][self.version])
          os.rename("re2-" + version_to_date(self.version), self._source_subfolder)
  
      def _configure_cmake(self):
          if self._cmake:
              return self._cmake
          self._cmake = CMake(self)
          self._cmake.definitions["RE2_BUILD_TESTING"] = False
          self._cmake.configure(build_folder=self._build_subfolder)
          return self._cmake
  
      def build(self):
          cmake = self._configure_cmake()
          cmake.build()
  
      def package(self):
          self.copy("LICENSE", src=self._source_subfolder, dst="licenses", keep_path=False)
          cmake = self._configure_cmake()
          cmake.install()
          tools.rmdir(os.path.join(self.package_folder, "lib", "cmake"))
  
      def package_info(self):
          self.cpp_info.names["cmake_find_package"] = "re2"
          self.cpp_info.names["cmake_find_package_multi"] = "re2"
          self.cpp_info.libs = tools.collect_libs(self)
  
          if self.settings.os == "Linux":
              self.cpp_info.system_libs = ["m", "pthread"]
  