diff --git a/MyxCMake/MyxCMakeConfigVersion.cmake b/MyxCMake/MyxCMakeConfigVersion.cmake
index ab208e0..74eef03 100644
--- a/MyxCMake/MyxCMakeConfigVersion.cmake
+++ b/MyxCMake/MyxCMakeConfigVersion.cmake
@@ -1,4 +1,4 @@
-set(MYX_CMAKE_PACKAGE_VERSION "2.0.26")
+set(MYX_CMAKE_PACKAGE_VERSION "2.0.29")
 if(MYX_CMAKE_PACKAGE_VERSION VERSION_LESS PACKAGE_FIND_VERSION)
   set(PACKAGE_VERSION_COMPATIBLE FALSE)
 else()
diff --git a/MyxCMake/lib/AddInterfaceLibrary.cmake b/MyxCMake/lib/AddInterfaceLibrary.cmake
index 8424706..6b80671 100644
--- a/MyxCMake/lib/AddInterfaceLibrary.cmake
+++ b/MyxCMake/lib/AddInterfaceLibrary.cmake
@@ -1,15 +1,18 @@
 #[=======================================================================[.rst:
-myx_add_library
----------------
+myx_add_interface_library
+-------------------------
 
-Вспомогательная функция для создания библиотеки::
+Вспомогательная функция для создания интерфейсной библиотеки::
 
-    myx_add_library(TARGET_NAME TARGET_TYPE
+    myx_add_interface_library(TARGET_NAME
+      [ PACKAGES packages ] |
+      [ LINK_LIBRARIES link_libraries ] |
       [ OUTPUT_NAME output_name ] |
       [ EXPORT_FILE_NAME file_name ] |
-      [ EXPORT_BASE_NAME base_name ])
+      [ EXPORT_BASE_NAME base_name ] |
+      [ HEADERS headers ])
 
-Обязательные параметры: `TARGET_NAME` - имя библиотеки и `TARGET_TYPE` - тип цели.
+Обязательные параметры: `TARGET_NAME` - имя библиотеки.
 Параметр `OUTPUT_NAME` определяет базовое имя выходных файлов.
 Параметр `EXPORT_FILE_NAME` задаёт имя заголовочного файла экспортируемых
 переменных, а `EXPORT_BASE_NAME` - базовый суффикс для формирования имён переменных.
@@ -31,9 +34,13 @@ function(myx_add_interface_library TARGET_NAME)
     set(CMAKE_CURRENT_FUNCTION_LIST_DIR ${MYX_CMAKE_LIB_DIR_BACKPORT})
   endif()
 
+  if(TARGET ${TARGET_NAME})
+    myx_message_fatal_error("Target ${TARGET_NAME} already exists")
+  endif()
+
   set(options)
   set(oneValueArgs OUTPUT_NAME)
-  set(multiValueArgs)
+  set(multiValueArgs HEADERS LINK_LIBRARIES PACKAGES)
   cmake_parse_arguments(ARG "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
 
   if(NOT ARG_OUTPUT_NAME)
@@ -41,7 +48,30 @@ function(myx_add_interface_library TARGET_NAME)
   endif()
 
   # Вызов стандартной функции `add_library()`
-  add_library(${TARGET_NAME} INTERFACE ${ARG_UNPARSED_ARGUMENTS})
+  if(${CMAKE_VERSION} VERSION_LESS "3.13.0")
+    add_library(${TARGET_NAME} INTERFACE)
+    # TODO
+#    target_sources(${TARGET_NAME} INTERFACE ${ARG_HEADERS})
+  else()
+    add_library(${TARGET_NAME} INTERFACE ${ARG_HEADERS})
+  endif()
+
+  foreach(__iter ${ARG_PACKAGES})
+    target_include_directories(${TARGET_NAME} INTERFACE ${${__iter}_INCLUDE_DIRS})
+    target_compile_definitions(${TARGET_NAME} INTERFACE ${${__iter}_COMPILE_DEFINITIONS})
+  endforeach()
+
+  if(ARG_LINK_LIBRARIES)
+    target_link_libraries(${TARGET_NAME} INTERFACE ${ARG_LINK_LIBRARIES})
+    foreach(__lib ${ARG_LINK_LIBRARIES})
+      if(TARGET ${__lib})
+        install(
+          TARGETS ${__lib}
+          EXPORT ${TARGET_NAME}Targets
+          COMPONENT DEV)
+      endif()
+    endforeach()
+  endif()
 
   # Библиотека, состоящая только из заголовочных файлов не требует сборки.
   # Стандартные пути к заголовочным файлам
@@ -75,16 +105,14 @@ function(myx_add_interface_library TARGET_NAME)
 
   install(EXPORT ${TARGET_NAME}Targets
     DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${TARGET_NAME}
-    COMPONENT DEV
-  )
+    COMPONENT DEV)
 
   install(
     FILES
       ${PROJECT_BINARY_DIR}/${TARGET_NAME}ConfigVersion.cmake
       ${PROJECT_BINARY_DIR}/${TARGET_NAME}Config.cmake
     DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${TARGET_NAME}
-    COMPONENT DEV
-  )
+    COMPONENT DEV)
 
   # Формирование файла для pkg-config
   file(WRITE "${PROJECT_BINARY_DIR}/${TARGET_NAME}.pc"
@@ -102,23 +130,21 @@ function(myx_add_interface_library TARGET_NAME)
   # Установка файла для pkg-config
   install(
     FILES "${PROJECT_BINARY_DIR}/${TARGET_NAME}.pc"
-    COMPONENT DEV
-    DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+    DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig"
+    COMPONENT DEV)
 
   # Установка библиотеки из заголовочных файлов
   target_include_directories(${TARGET_NAME} SYSTEM INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
   install(
     TARGETS ${TARGET_NAME}
     EXPORT ${TARGET_NAME}Targets
-    COMPONENT LIB
-  )
+    COMPONENT DEV)
 
   # Установка публичных заголовочных файлов
-  if(PROJECT_IS_TOP_LEVEL)
+  if(PROJECT_IS_TOP_LEVEL AND ARG_HEADERS)
     myx_install_relative(${PROJECT_SOURCE_DIR}
-      FILES ${ARG_UNPARSED_ARGUMENTS}
+      FILES ${ARG_HEADERS}
       DESTINATION ${CMAKE_INSTALL_PREFIX}
-      COMPONENT DEV
-    )
+      COMPONENT DEV)
   endif()
 endfunction()
diff --git a/MyxCMake/lib/AddObjectLibrary.cmake b/MyxCMake/lib/AddObjectLibrary.cmake
index 9c30954..2fc2443 100644
--- a/MyxCMake/lib/AddObjectLibrary.cmake
+++ b/MyxCMake/lib/AddObjectLibrary.cmake
@@ -1,6 +1,6 @@
 #[=======================================================================[.rst:
-myx_add_library
----------------
+myx_add_object_library
+----------------------
 
 Вспомогательная функция для создания объектной библиотеки::
 
diff --git a/MyxCMake/lib/CreatePackages.cmake b/MyxCMake/lib/CreatePackages.cmake
index 4470f5d..23ba112 100644
--- a/MyxCMake/lib/CreatePackages.cmake
+++ b/MyxCMake/lib/CreatePackages.cmake
@@ -129,7 +129,8 @@ function(myx_create_packages TARGET_NAME)
 
     # В списке компонентов обязательно должны быть main, lib, dev, static и doc
     #list(APPEND CPACK_COMPONENTS_ALL main lib dev static doc)
-    list(REMOVE_DUPLICATES CPACK_COMPONENTS_ALL)
+    # TODO
+    #list(REMOVE_DUPLICATES CPACK_COMPONENTS_ALL)
 
     set(deb_arch_suffix "${CPACK_PACKAGE_VERSION}_${CPACK_TARGET_ARCH}.deb")
     # Правило формирования имени пакета и файла для компонента main
diff --git a/MyxCMake/lib/TargetSetup.cmake b/MyxCMake/lib/TargetSetup.cmake
index bab4f22..31c6d12 100644
--- a/MyxCMake/lib/TargetSetup.cmake
+++ b/MyxCMake/lib/TargetSetup.cmake
@@ -12,12 +12,14 @@ function(myx_target_setup TARGET_NAME)
   endif()
 
   get_target_property(__target_type ${TARGET_NAME} TYPE)
+  if(${__target_type} STREQUAL "INTERFACE_LIBRARY")
+    myx_message_fatal_error("This function will not work for interface targets.")
+  endif()
 
   foreach(iter ${ARG_PACKAGES})
     target_include_directories(${TARGET_NAME} PRIVATE ${${iter}_INCLUDE_DIRS})
     target_compile_definitions(${TARGET_NAME} PRIVATE ${${iter}_COMPILE_DEFINITIONS})
   endforeach()
-  target_compile_definitions(${TARGET_NAME} PRIVATE ${ARG_COMPILE_DEFINITIONS})
 
   if(ARG_CPP)
     set_property(TARGET ${TARGET_NAME} APPEND PROPERTY CPP_FILES ${ARG_CPP})
@@ -43,14 +45,12 @@ function(myx_target_setup TARGET_NAME)
     set_property(TARGET ${TARGET_NAME} APPEND PROPERTY PRIVATE_HEADER_FILES "${ARG_PCH}")
   endif()
 
-  if(NOT __target_type STREQUAL "INTERFACE_LIBRARY")
-    target_include_directories(${PROJECT_NAME} PRIVATE
-      $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>)
+  target_include_directories(${PROJECT_NAME} PRIVATE
+    $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>)
 
-    if(IS_DIRECTORY "${PROJECT_SOURCE_DIR}/src")
-      target_include_directories(${PROJECT_NAME} PRIVATE
-        $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/src>)
-    endif()
+  if(IS_DIRECTORY "${PROJECT_SOURCE_DIR}/src")
+    target_include_directories(${PROJECT_NAME} PRIVATE
+      $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/src>)
   endif()
 
   if(__target_type STREQUAL "EXECUTABLE")
@@ -74,62 +74,47 @@ function(myx_target_setup TARGET_NAME)
     install(TARGETS ${TARGET_NAME} COMPONENT MAIN RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
   endif()
 
-  if(NOT ${__target_type} STREQUAL "INTERFACE_LIBRARY")
-    target_sources(${TARGET_NAME} PUBLIC $<BUILD_INTERFACE:${ARG_INTERFACE_HEADERS}>)
-    target_sources(${TARGET_NAME} PUBLIC ${ARG_PUBLIC_HEADERS})
-    target_sources(${TARGET_NAME} PRIVATE ${ARG_CPP} ${ARG_PCH} ${ARG_PRIVATE_HEADERS})
-    target_compile_definitions(${TARGET_NAME} PRIVATE ${ARG_COMPILE_DEFINITIONS})
-  endif()
+  target_sources(${TARGET_NAME} PUBLIC ${ARG_PUBLIC_HEADERS})
+  target_sources(${TARGET_NAME} PRIVATE ${ARG_CPP} ${ARG_PCH} ${ARG_PRIVATE_HEADERS})
+  target_sources(${TARGET_NAME} PUBLIC $<BUILD_INTERFACE:${ARG_INTERFACE_HEADERS}>)
+  target_compile_definitions(${TARGET_NAME} PRIVATE ${ARG_COMPILE_DEFINITIONS})
 
-  if(${__target_type} STREQUAL "INTERFACE_LIBRARY")
-    foreach(__lib ${ARG_LINK_LIBRARIES})
-      if(TARGET ${__lib})
-        install(
-          TARGETS ${__lib}
-          EXPORT ${TARGET_NAME}Targets
-          COMPONENT LIB
-        )
-      endif()
-    endforeach()
-    target_link_libraries(${TARGET_NAME} INTERFACE ${ARG_LINK_LIBRARIES})
+  # CMake до версии 3.12 не умеет извлекать из целей типа `OBJECT_LIBRARY`
+  # информацию о заголовочных файлах. Это обход.
+  if(${CMAKE_VERSION} VERSION_GREATER "3.11.99")
+    target_link_libraries(${TARGET_NAME} PRIVATE ${ARG_LINK_LIBRARIES})
   else()
-    # CMake до версии 3.12 не умеет извлекать из целей типа `OBJECT_LIBRARY`
-    # информацию о заголовочных файлах. Это обход.
-    if(${CMAKE_VERSION} VERSION_GREATER "3.11.99")
+    if((NOT ${__target_type} STREQUAL "OBJECT_LIBRARY") AND
+       (NOT ${__target_type} STREQUAL "EXECUTABLE"))
       target_link_libraries(${TARGET_NAME} PRIVATE ${ARG_LINK_LIBRARIES})
     else()
-      if((NOT ${__target_type} STREQUAL "OBJECT_LIBRARY") AND
-         (NOT ${__target_type} STREQUAL "EXECUTABLE"))
-        target_link_libraries(${TARGET_NAME} PRIVATE ${ARG_LINK_LIBRARIES})
-      else()
-        foreach(__link_library ${ARG_LINK_LIBRARIES})
-          if(TARGET ${__link_library})
-            get_target_property(__lib_type ${__link_library} TYPE)
-            if(__lib_type)
-              get_target_property(__include_dirs ${__link_library} INTERFACE_INCLUDE_DIRECTORIES)
-              if(__include_dirs)
-                target_include_directories(${TARGET_NAME} PUBLIC ${__include_dirs})
-              endif()
-              if(${__target_type} STREQUAL "EXECUTABLE")
-                if(${__lib_type} STREQUAL "OBJECT_LIBRARY")
-                  if(TARGET ${__link_library}_static)
-                    target_link_libraries(${TARGET_NAME} PRIVATE ${__link_library}_static)
-                  else()
-                    target_link_libraries(${TARGET_NAME} PRIVATE ${__link_library}_shared)
-                endif()
+      foreach(__link_library ${ARG_LINK_LIBRARIES})
+        if(TARGET ${__link_library})
+          get_target_property(__lib_type ${__link_library} TYPE)
+          if(__lib_type)
+            get_target_property(__include_dirs ${__link_library} INTERFACE_INCLUDE_DIRECTORIES)
+            if(__include_dirs)
+              target_include_directories(${TARGET_NAME} PUBLIC ${__include_dirs})
+            endif()
+            if(${__target_type} STREQUAL "EXECUTABLE")
+              if(${__lib_type} STREQUAL "OBJECT_LIBRARY")
+                if(TARGET ${__link_library}_static)
+                  target_link_libraries(${TARGET_NAME} PRIVATE ${__link_library}_static)
                 else()
-                  target_link_libraries(${TARGET_NAME} PRIVATE ${__link_library})
-                endif()
+                  target_link_libraries(${TARGET_NAME} PRIVATE ${__link_library}_shared)
+              endif()
+              else()
+                target_link_libraries(${TARGET_NAME} PRIVATE ${__link_library})
               endif()
             endif()
           endif()
-        endforeach()
-      endif()
+        endif()
+      endforeach()
     endif()
   endif()
 
   # Установка публичных заголовочных файлов
-  if(PROJECT_IS_TOP_LEVEL)
+  if(PROJECT_IS_TOP_LEVEL AND ARG_PUBLIC_HEADERS)
     myx_install_relative(${PROJECT_SOURCE_DIR}
       FILES ${ARG_PUBLIC_HEADERS}
       DESTINATION ${CMAKE_INSTALL_PREFIX}
diff --git a/README.md b/README.md
index 39199da..ee4a2a3 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 ## Установка
 
 В корневом каталоге проекта создать каталог `cmake` и распаковать в него
-[архив](../../../releases/download/2.0.26/myx-cmake-local-2.0.26.tar.xz ).
+[архив](../../../releases/download/2.0.29/myx-cmake-local-2.0.29.tar.xz ).
 
 ## Использование
 
diff --git a/VERSION b/VERSION
index f6ee962..3df5a46 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.0.26
+2.0.29
diff --git a/debian/CMakeLists.txt b/debian/CMakeLists.txt
index 720f013..a07ddbe 100644
--- a/debian/CMakeLists.txt
+++ b/debian/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.6 FATAL_ERROR)
-project(myx-cmake VERSION 2.0.26 LANGUAGES)
+project(myx-cmake VERSION 2.0.29 LANGUAGES)
 
 include(GNUInstallDirs)
 file(WRITE ${CMAKE_SOURCE_DIR}/MyxCMake/MyxCMakeConfigVersion.cmake
diff --git a/debian/changelog b/debian/changelog
index 0f771ff..618701b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,4 +1,4 @@
-myx-cmake (2.0.26) unstable; urgency=medium
+myx-cmake (2.0.29) unstable; urgency=medium
 
   * New version.
 
diff --git a/myx_setup.cmake b/myx_setup.cmake
index 3270fd9..056a310 100644
--- a/myx_setup.cmake
+++ b/myx_setup.cmake
@@ -20,11 +20,11 @@ if(ENV{MYX_CMAKE_DIR})
   set(MYX_CMAKE_DIR $ENV{MYX_CMAKE_DIR})
 endif()
 if(MYX_CMAKE_DIR)
-  find_package(MyxCMake 2.0.26 REQUIRED CONFIG PATHS ${MYX_CMAKE_DIR} NO_DEFAULT_PATH)
+  find_package(MyxCMake 2.0.29 REQUIRED CONFIG PATHS ${MYX_CMAKE_DIR} NO_DEFAULT_PATH)
   myx_message_notice("=== MyxCMake directory: ${MyxCMake_CONFIG} ===")
 else()
   if(MYX_CMAKE_USE_SYSTEM)
-    find_package(MyxCMake 2.0.26 REQUIRED)
+    find_package(MyxCMake 2.0.29 REQUIRED)
     myx_message_notice("=== MyxCMake directory: ${MyxCMake_CONFIG} ===")
   else()
     include(${PROJECT_SOURCE_DIR}/cmake/myx/MyxCMakeConfig.cmake)