Install well-known type proto files from CMake project

cmake/install.cmake

@@ -5,7 +5,8 @@ foreach(_library
   libprotobuf
   libprotoc)
   set_property(TARGET ${_library}
-    PROPERTY INTERFACE_INCLUDE_DIRECTORIES $<INSTALL_INTERFACE:include>)
+    PROPERTY INTERFACE_INCLUDE_DIRECTORIES
+    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
   install(TARGETS ${_library} EXPORT protobuf-targets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT ${_library}
     LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT ${_library}
@@ -29,6 +30,8 @@ if(MSVC)
     get_filename_component(_extract_from "${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}"
@@ -42,6 +45,45 @@ if(MSVC)
   endforeach()
 endif()
 
+# 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)
+      string(SUBSTRING "${_string}" ${_length} -1 _draft_list)
+      foreach(_item ${_draft_list})
+        string(STRIP "${_item}" _item)
+        list(APPEND _list "${_item}")
+      endforeach()
+    endif()
+  endforeach()
+  set(${VARIABLE} ${_list} PARENT_SCOPE)
+endfunction()
+
+# Install well-known type proto files
+_protobuf_auto_list("../src/Makefile.am" nobase_dist_proto_DATA)
+foreach(_file ${nobase_dist_proto_DATA})
+  get_filename_component(_file_from "../src/${_file}" ABSOLUTE)
+  get_filename_component(_file_name ${_file} NAME)
+  get_filename_component(_file_path ${_file} PATH)
+  if(EXISTS "${_file_from}")
+    install(FILES "${_file_from}"
+      DESTINATION "${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(EXPORT protobuf-targets
   DESTINATION "lib/cmake/protobuf"
   COMPONENT protobuf-export)
@@ -50,10 +92,12 @@ 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(FILES
   "${protobuf_BINARY_DIR}/protobuf-config.cmake"
   "${protobuf_BINARY_DIR}/protobuf-config-version.cmake"
-  "${protobuf_SOURCE_DIR}/protobuf-module.cmake"
+  "${protobuf_BINARY_DIR}/protobuf-module.cmake"
   DESTINATION "lib/cmake/protobuf"
   COMPONENT protobuf-export)

cmake/protobuf-module.cmake.in

@@ -23,6 +23,10 @@ function(PROTOBUF_GENERATE_CPP SRCS HDRS)
     set(_protobuf_include_path -I ${CMAKE_CURRENT_SOURCE_DIR})
   endif()
 
+  # Add well-nkown type protos include path
+  list(APPEND _protobuf_include_path
+    -I "${_PROTOBUF_IMPORT_PREFIX}/@CMAKE_INSTALL_INCLUDEDIR@")
+
   if(DEFINED PROTOBUF_IMPORT_DIRS)
     foreach(DIR ${PROTOBUF_IMPORT_DIRS})
       get_filename_component(ABS_PATH ${DIR} ABSOLUTE)
@@ -63,8 +67,10 @@ endfunction()
 function(_protobuf_find_libraries name filename)
    get_target_property(${name}_LIBRARY lib${filename}
      IMPORTED_LOCATION_RELEASE)
+   set(${name}_LIBRARY "${${name}_LIBRARY}" PARENT_SCOPE)
    get_target_property(${name}_LIBRARY_DEBUG lib${filename}
      IMPORTED_LOCATION_DEBUG)
+   set(${name}_LIBRARY_DEBUG "${${name}_LIBRARY_DEBUG}" PARENT_SCOPE)
 
    if(NOT ${name}_LIBRARY_DEBUG)
       # There is no debug library
@@ -114,11 +120,15 @@ if(UNIX)
 endif()
 
 # Set the include directory
-set(PROTOBUF_INCLUDE_DIR "${_PROTOBUF_IMPORT_PREFIX}/include")
+set(PROTOBUF_INCLUDE_DIR "${_PROTOBUF_IMPORT_PREFIX}/@CMAKE_INSTALL_INCLUDEDIR@")
 
 # Set the protoc Executable
 get_target_property(PROTOBUF_PROTOC_EXECUTABLE protoc
   IMPORTED_LOCATION_RELEASE)
+if(NOT PROTOBUF_PROTOC_EXECUTABLE)
+  get_target_property(PROTOBUF_PROTOC_EXECUTABLE protoc
+    IMPORTED_LOCATION_DEBUG)
+endif()
 
 include(FindPackageHandleStandardArgs)
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(PROTOBUF DEFAULT_MSG