third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/cmake/install.cmake

 include(GNUInstallDirs)
 
 foreach(_library
   libprotobuf-lite
   libprotobuf
   libprotoc)
   set_property(TARGET ${_library}
     PROPERTY INTERFACE_INCLUDE_DIRECTORIES
+    $<BUILD_INTERFACE:${protobuf_source_dir}/src>
     $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
   install(TARGETS ${_library} EXPORT protobuf-targets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT ${_library}
     LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT ${_library}
     ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT ${_library})
 endforeach()
 
 install(TARGETS protoc EXPORT protobuf-targets
   RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT protoc)
 
-if(TRUE)
-  file(STRINGS extract_includes.bat.in _extract_strings
-    REGEX "^copy")
-  foreach(_extract_string ${_extract_strings})
-    string(REPLACE "copy \${PROTOBUF_SOURCE_WIN32_PATH}\\" ""
-      _extract_string ${_extract_string})
-    string(REPLACE "\\" "/" _extract_string ${_extract_string})
-    string(REGEX MATCH "^[^ ]+"
-      _extract_from ${_extract_string})
-    string(REGEX REPLACE "^${_extract_from} ([^$]+)" "\\1"
-      _extract_to ${_extract_string})
-    get_filename_component(_extract_from "${protobuf_SOURCE_DIR}/${_extract_from}" ABSOLUTE)
-    get_filename_component(_extract_name ${_extract_to} NAME)
-    get_filename_component(_extract_to ${_extract_to} PATH)
-    string(REPLACE "include/" "${CMAKE_INSTALL_INCLUDEDIR}/"
-      _extract_to "${_extract_to}")
-    if(EXISTS "${_extract_from}")
-      install(FILES "${_extract_from}"
-        DESTINATION "${_extract_to}"
-        COMPONENT protobuf-headers
-        RENAME "${_extract_name}")
-    else()
-      message(AUTHOR_WARNING "The file \"${_extract_from}\" is listed in "
-        "\"${protobuf_SOURCE_DIR}/cmake/extract_includes.bat.in\" "
-        "but there not exists. The file will not be installed.")
-    endif()
-  endforeach()
-endif()
+file(STRINGS extract_includes.bat.in _extract_strings
+  REGEX "^copy")
+foreach(_extract_string ${_extract_strings})
+  string(REPLACE "copy \${PROTOBUF_SOURCE_WIN32_PATH}\\" ""
+    _extract_string ${_extract_string})
+  string(REPLACE "\\" "/" _extract_string ${_extract_string})
+  string(REGEX MATCH "^[^ ]+"
+    _extract_from ${_extract_string})
+  string(REGEX REPLACE "^${_extract_from} ([^$]+)" "\\1"
+    _extract_to ${_extract_string})
+  get_filename_component(_extract_from "${protobuf_SOURCE_DIR}/${_extract_from}" ABSOLUTE)
+  get_filename_component(_extract_name ${_extract_to} NAME)
+  get_filename_component(_extract_to ${_extract_to} PATH)
+  string(REPLACE "include/" "${CMAKE_INSTALL_INCLUDEDIR}/"
+    _extract_to "${_extract_to}")
+  if(EXISTS "${_extract_from}")
+    install(FILES "${_extract_from}"
+      DESTINATION "${_extract_to}"
+      COMPONENT protobuf-headers
+      RENAME "${_extract_name}")
+  else()
+    message(AUTHOR_WARNING "The file \"${_extract_from}\" is listed in "
+      "\"${protobuf_SOURCE_DIR}/cmake/extract_includes.bat.in\" "
+      "but there not exists. The file will not be installed.")
+  endif()
+endforeach()
 
 # Internal function for parsing auto tools scripts
 function(_protobuf_auto_list FILE_NAME VARIABLE)
   file(STRINGS ${FILE_NAME} _strings)
   set(_list)
   foreach(_string ${_strings})
     set(_found)
     string(REGEX MATCH "^[ \t]*${VARIABLE}[ \t]*=[ \t]*" _found "${_string}")
     if(_found)
       string(LENGTH "${_found}" _length)
@@ skipping 18 matching lines @@
       DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${_file_path}"
       COMPONENT protobuf-protos
       RENAME "${_file_name}")
   else()
     message(AUTHOR_WARNING "The file \"${_file_from}\" is listed in "
       "\"${protobuf_SOURCE_DIR}/../src/Makefile.am\" as nobase_dist_proto_DATA "
       "but there not exists. The file will not be installed.")
   endif()
 endforeach()
 
-# Export configuration
+# Install configuration
+set(_cmakedir_desc "Directory relative to CMAKE_INSTALL to install the cmake configuration files")
+if(NOT MSVC)
+  set(CMAKE_INSTALL_CMAKEDIR "${CMAKE_INSTALL_LIBDIR}/cmake/protobuf" CACHE STRING "${_cmakedir_desc}")
+else()
+  set(CMAKE_INSTALL_CMAKEDIR "cmake" CACHE STRING "${_cmakedir_desc}")
+endif()
+mark_as_advanced(CMAKE_INSTALL_CMAKEDIR)
+
+configure_file(protobuf-config.cmake.in
+  ${CMAKE_INSTALL_CMAKEDIR}/protobuf-config.cmake @ONLY)
+configure_file(protobuf-config-version.cmake.in
+  ${CMAKE_INSTALL_CMAKEDIR}/protobuf-config-version.cmake @ONLY)
+configure_file(protobuf-module.cmake.in
+  ${CMAKE_INSTALL_CMAKEDIR}/protobuf-module.cmake @ONLY)
+configure_file(protobuf-options.cmake
+  ${CMAKE_INSTALL_CMAKEDIR}/protobuf-options.cmake @ONLY)
+
+# Allows the build directory to be used as a find directory.
+export(TARGETS libprotobuf-lite libprotobuf libprotoc protoc
+  NAMESPACE protobuf::
+  FILE ${CMAKE_INSTALL_CMAKEDIR}/protobuf-targets.cmake
+)
 
 install(EXPORT protobuf-targets
-  DESTINATION "lib/cmake/protobuf"
+  DESTINATION "${CMAKE_INSTALL_CMAKEDIR}"
+  NAMESPACE protobuf::
   COMPONENT protobuf-export)
 
-configure_file(protobuf-config.cmake.in
-  protobuf-config.cmake @ONLY)
-configure_file(protobuf-config-version.cmake.in
-  protobuf-config-version.cmake @ONLY)
-configure_file(protobuf-module.cmake.in
-  protobuf-module.cmake @ONLY)
+install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_INSTALL_CMAKEDIR}/
+  DESTINATION "${CMAKE_INSTALL_CMAKEDIR}"
+  COMPONENT protobuf-export
+  PATTERN protobuf-targets.cmake EXCLUDE
+)
 
-install(FILES
-  "${protobuf_BINARY_DIR}/protobuf-config.cmake"
-  "${protobuf_BINARY_DIR}/protobuf-config-version.cmake"
-  "${protobuf_BINARY_DIR}/protobuf-module.cmake"
-  DESTINATION "lib/cmake/protobuf"
-  COMPONENT protobuf-export)
+option(protobuf_INSTALL_EXAMPLES "Install the examples folder" OFF)
+if(protobuf_INSTALL_EXAMPLES)
+  install(DIRECTORY ../examples/ DESTINATION examples
+    COMPONENT protobuf-examples)
+endif()