CMake: New option CMake_INSTALL_COMPONENTS

By default is OFF.
Now it's used with CPack IFW himself installer.

8 files changed, 137 insertions, 60 deletions

diff --git a/CMakeCPack.cmake b/CMakeCPack.cmake
index 0eda2bd063..d7c602403c 100644
--- a/CMakeCPack.cmake
+++ b/CMakeCPack.cmake
@@ -66,34 +66,40 @@ if(EXISTS "${CMAKE_ROOT}/Modules/CPack.cmake")
   endif()
 
   # Components
-  set(_CPACK_IFW_COMPONENTS_ALL cmake ctest cpack)
-  list(APPEND _CPACK_IFW_COMPONENTS_ALL data)
-  if(CMAKE_INSTALL_DEFAULT_COMPONENT_NAME)
-    set(_CPACK_IFW_COMPONENT_UNSPECIFIED_NAME
-      ${CMAKE_INSTALL_DEFAULT_COMPONENT_NAME})
-  else()
-    set(_CPACK_IFW_COMPONENT_UNSPECIFIED_NAME Unspecified)
-  endif()
-  list(APPEND _CPACK_IFW_COMPONENTS_ALL ${_CPACK_IFW_COMPONENT_UNSPECIFIED_NAME})
-  string(TOUPPER "${_CPACK_IFW_COMPONENT_UNSPECIFIED_NAME}"
-    _CPACK_IFW_COMPONENT_UNSPECIFIED_UNAME)
-  if(BUILD_CursesDialog)
-    list(APPEND _CPACK_IFW_COMPONENTS_ALL ccmake)
-  endif()
-  if(BUILD_QtDialog)
-    list(APPEND _CPACK_IFW_COMPONENTS_ALL cmake-gui)
-  endif()
-  if(SPHINX_MAN)
-    list(APPEND _CPACK_IFW_COMPONENTS_ALL sphinx-man)
-  endif()
-  if(SPHINX_HTML)
-    list(APPEND _CPACK_IFW_COMPONENTS_ALL sphinx-html)
-  endif()
-  if(SPHINX_SINGLEHTML)
-    list(APPEND _CPACK_IFW_COMPONENTS_ALL sphinx-singlehtml)
-  endif()
-  if(SPHINX_QTHELP)
-    list(APPEND _CPACK_IFW_COMPONENTS_ALL sphinx-qthelp)
+  if(CMake_INSTALL_COMPONENTS)
+    set(_CPACK_IFW_COMPONENTS_ALL cmake ctest cpack)
+    if(CMAKE_INSTALL_DEFAULT_COMPONENT_NAME)
+      set(_CPACK_IFW_COMPONENT_UNSPECIFIED_NAME
+        ${CMAKE_INSTALL_DEFAULT_COMPONENT_NAME})
+    else()
+      set(_CPACK_IFW_COMPONENT_UNSPECIFIED_NAME Unspecified)
+    endif()
+    list(APPEND _CPACK_IFW_COMPONENTS_ALL ${_CPACK_IFW_COMPONENT_UNSPECIFIED_NAME})
+    string(TOUPPER "${_CPACK_IFW_COMPONENT_UNSPECIFIED_NAME}"
+      _CPACK_IFW_COMPONENT_UNSPECIFIED_UNAME)
+    if(BUILD_CursesDialog)
+      list(APPEND _CPACK_IFW_COMPONENTS_ALL ccmake)
+    endif()
+    if(BUILD_QtDialog)
+      list(APPEND _CPACK_IFW_COMPONENTS_ALL cmake-gui)
+    endif()
+    if(SPHINX_MAN)
+      list(APPEND _CPACK_IFW_COMPONENTS_ALL sphinx-man)
+    endif()
+    if(SPHINX_HTML)
+      list(APPEND _CPACK_IFW_COMPONENTS_ALL sphinx-html)
+    endif()
+    if(SPHINX_SINGLEHTML)
+      list(APPEND _CPACK_IFW_COMPONENTS_ALL sphinx-singlehtml)
+    endif()
+    if(SPHINX_QTHELP)
+      list(APPEND _CPACK_IFW_COMPONENTS_ALL sphinx-qthelp)
+    endif()
+    set(_CPACK_IFW_COMPONENTS_CONFIGURATION "
+  # Components
+  set(CPACK_COMPONENTS_ALL \"${_CPACK_IFW_COMPONENTS_ALL}\")
+  set(CPACK_COMPONENTS_GROUPING IGNORE)
+")
   endif()
 
   # Components scripts configuration
@@ -107,9 +113,23 @@ if(EXISTS "${CMAKE_ROOT}/Modules/CPack.cmake")
   if(${CMAKE_SYSTEM_NAME} MATCHES Windows)
     set(_CPACK_IFW_PACKAGE_ICON
         "set(CPACK_IFW_PACKAGE_ICON \"${CMake_SOURCE_DIR}/Source/QtDialog/CMakeSetup.ico\")")
+    if(BUILD_QtDialog)
+      set(_CPACK_IFW_SHORTCUT_OPTIONAL "${_CPACK_IFW_SHORTCUT_OPTIONAL}component.addOperation(\"CreateShortcut\", \"@TargetDir@/bin/cmake-gui.exe\", \"@StartMenuDir@/CMake (cmake-gui).lnk\");\n")
+    endif()
+    if(SPHINX_HTML)
+      set(_CPACK_IFW_SHORTCUT_OPTIONAL "${_CPACK_IFW_SHORTCUT_OPTIONAL}component.addOperation(\"CreateShortcut\", \"@TargetDir@/doc/cmake-${CMake_VERSION_MAJOR}.${CMake_VERSION_MINOR}/html/index.html\", \"@StartMenuDir@/CMake Documentation.lnk\");\n")
+    endif()
+    configure_file("${CMake_SOURCE_DIR}/Source/QtIFW/installscript.qs.in"
+      "${CMake_BINARY_DIR}/installscript.qs" @ONLY
+    )
     install(FILES "${CMake_SOURCE_DIR}/Source/QtIFW/cmake.org.html"
       DESTINATION "${CMAKE_DOC_DIR}"
     )
+    if(CMake_INSTALL_COMPONENTS)
+      set(_CPACK_IFW_PACKAGE_SCRIPT "${CMake_BINARY_DIR}/CMake.qs")
+    else()
+      set(_CPACK_IFW_PACKAGE_SCRIPT "${CMake_BINARY_DIR}/installscript.qs")
+    endif()
   endif()
 
   if(${CMAKE_SYSTEM_NAME} MATCHES Linux)
diff --git a/CMakeCPackOptions.cmake.in b/CMakeCPackOptions.cmake.in
index 51ee4dbd7e..c0e76e2403 100644
--- a/CMakeCPackOptions.cmake.in
+++ b/CMakeCPackOptions.cmake.in
@@ -32,6 +32,7 @@ endif()
 include("@QT_DIALOG_CPACK_OPTIONS_FILE@" OPTIONAL)
 
 if(CPACK_GENERATOR MATCHES "IFW")
+
   # Installer configuration
   set(CPACK_IFW_PACKAGE_TITLE "CMake Build Tool")
   set(CPACK_IFW_PRODUCT_URL "http://www.cmake.org")
@@ -40,17 +41,20 @@ if(CPACK_GENERATOR MATCHES "IFW")
     "@CMake_SOURCE_DIR@/Source/QtDialog/CMakeSetup128.png")
   set(CPACK_IFW_PACKAGE_CONTROL_SCRIPT
     "@CMake_SOURCE_DIR@/Source/QtIFW/controlscript.qs")
+
   # Uninstaller configuration
   set(CPACK_IFW_PACKAGE_MAINTENANCE_TOOL_NAME "cmake-maintenance")
-  # Package configuration group
-  set(CPACK_IFW_PACKAGE_GROUP CMake)
-  # Components
-  set(CPACK_COMPONENTS_ALL "@_CPACK_IFW_COMPONENTS_ALL@")
-  set(CPACK_COMPONENTS_GROUPING IGNORE)
+  @_CPACK_IFW_COMPONENTS_CONFIGURATION@
   # Unspecified
   set(CPACK_IFW_COMPONENT_@_CPACK_IFW_COMPONENT_UNSPECIFIED_UNAME@_VERSION
     "@_CPACK_IFW_PACKAGE_VERSION@")
+
+  # Package configuration group
+  set(CPACK_IFW_PACKAGE_GROUP CMake)
+
   # Group configuration
+
+  # CMake
   set(CPACK_COMPONENT_GROUP_CMAKE_DISPLAY_NAME
     "@CPACK_PACKAGE_NAME@")
   set(CPACK_COMPONENT_GROUP_CMAKE_DESCRIPTION
@@ -59,32 +63,48 @@ if(CPACK_GENERATOR MATCHES "IFW")
     "@_CPACK_IFW_PACKAGE_VERSION@")
   set(CPACK_IFW_COMPONENT_GROUP_CMAKE_LICENSES
     "@CPACK_PACKAGE_NAME@ Copyright" "@CPACK_RESOURCE_FILE_LICENSE@")
-  set(CPACK_IFW_COMPONENT_GROUP_CMAKE_SCRIPT "@CMake_BINARY_DIR@/CMake.qs")
+  set(CPACK_IFW_COMPONENT_GROUP_CMAKE_SCRIPT "@_CPACK_IFW_PACKAGE_SCRIPT@")
   set(CPACK_IFW_COMPONENT_GROUP_CMAKE_PRIORITY 100)
 
   # Tools
   set(CPACK_COMPONENT_GROUP_TOOLS_DISPLAY_NAME "Command-Line Tools")
+  set(CPACK_COMPONENT_GROUP_TOOLS_DESCRIPTION
+    "Command-Line Tools: cmake, ctest and cpack")
   set(CPACK_COMPONENT_GROUP_TOOLS_PARENT_GROUP CMake)
   set(CPACK_IFW_COMPONENT_GROUP_TOOLS_PRIORITY 90)
   set(CPACK_IFW_COMPONENT_GROUP_TOOLS_VERSION "@_CPACK_IFW_PACKAGE_VERSION@")
 
   set(CPACK_COMPONENT_CMAKE_DISPLAY_NAME "cmake")
+  set(CPACK_COMPONENT_CMAKE_DESCRIPTION
+    "The \"cmake\" executable is the CMake command-line interface")
+  set(CPACK_COMPONENT_CMAKE_REQUIRED TRUE)
   set(CPACK_COMPONENT_CMAKE_GROUP Tools)
   set(CPACK_IFW_COMPONENT_CMAKE_NAME "CMake")
+  set(CPACK_IFW_COMPONENT_CMAKE_PRIORITY 89)
   set(CPACK_IFW_COMPONENT_CMAKE_VERSION "@_CPACK_IFW_PACKAGE_VERSION@")
 
   set(CPACK_COMPONENT_CTEST_DISPLAY_NAME "ctest")
+  set(CPACK_COMPONENT_CTEST_DESCRIPTION
+    "The \"ctest\" executable is the CMake test driver program")
+  set(CPACK_COMPONENT_CTEST_REQUIRED TRUE)
   set(CPACK_COMPONENT_CTEST_GROUP Tools)
   set(CPACK_IFW_COMPONENT_CTEST_NAME "CTest")
+  set(CPACK_IFW_COMPONENT_CTEST_PRIORITY 88)
   set(CPACK_IFW_COMPONENT_CTEST_VERSION "@_CPACK_IFW_PACKAGE_VERSION@")
 
   set(CPACK_COMPONENT_CPACK_DISPLAY_NAME "cpack")
+  set(CPACK_COMPONENT_CPACK_DESCRIPTION
+    "The \"cpack\" executable is the CMake packaging program")
+  set(CPACK_COMPONENT_CPACK_REQUIRED TRUE)
   set(CPACK_COMPONENT_CPACK_GROUP Tools)
   set(CPACK_IFW_COMPONENT_CPACK_NAME "CPack")
+  set(CPACK_IFW_COMPONENT_CPACK_PRIORITY 87)
   set(CPACK_IFW_COMPONENT_CPACK_VERSION "@_CPACK_IFW_PACKAGE_VERSION@")
 
   # Dialogs
   set(CPACK_COMPONENT_GROUP_DIALOGS_DISPLAY_NAME "Interactive Dialogs")
+  set(CPACK_COMPONENT_GROUP_DIALOGS_DESCRIPTION
+    "Interactive Dialogs with Console and GUI interfaces")
   set(CPACK_COMPONENT_GROUP_DIALOGS_PARENT_GROUP CMake)
   set(CPACK_IFW_COMPONENT_GROUP_DIALOGS_PRIORITY 80)
   set(CPACK_IFW_COMPONENT_GROUP_DIALOGS_VERSION "@_CPACK_IFW_PACKAGE_VERSION@")
@@ -101,17 +121,10 @@ if(CPACK_GENERATOR MATCHES "IFW")
   set(CPACK_IFW_COMPONENT_CCMAKE_NAME "CursesGUI")
   set(CPACK_IFW_COMPONENT_CCMAKE_VERSION "@_CPACK_IFW_PACKAGE_VERSION@")
 
-  # Data
-  set(CPACK_COMPONENT_DATA_DISPLAY_NAME "Data")
-  set(CPACK_COMPONENT_DATA_DESCRIPTION
-    "CMake data files (help, modules and templates)")
-  set(CPACK_COMPONENT_DATA_GROUP CMake)
-  set(CPACK_IFW_COMPONENT_DATA_PRIORITY 70)
-  set(CPACK_IFW_COMPONENT_DATA_NAME "Data")
-  set(CPACK_IFW_COMPONENT_DATA_VERSION "@_CPACK_IFW_PACKAGE_VERSION@")
-
   # Documentation
   set(CPACK_COMPONENT_GROUP_DOCUMENTATION_DISPLAY_NAME "Documentation")
+  set(CPACK_COMPONENT_GROUP_DOCUMENTATION_DESCRIPTION
+    "CMake Documentation in different formats (html, man, qch)")
   set(CPACK_COMPONENT_GROUP_DOCUMENTATION_PARENT_GROUP CMake)
   set(CPACK_IFW_COMPONENT_GROUP_DOCUMENTATION_PRIORITY 60)
   set(CPACK_IFW_COMPONENT_GROUP_DOCUMENTATION_VERSION
@@ -119,6 +132,7 @@ if(CPACK_GENERATOR MATCHES "IFW")
 
   set(CPACK_COMPONENT_SPHINX-MAN_DISPLAY_NAME "man")
   set(CPACK_COMPONENT_SPHINX-MAN_GROUP Documentation)
+  set(CPACK_COMPONENT_SPHINX-MAN_DISABLED TRUE)
   set(CPACK_IFW_COMPONENT_SPHINX-MAN_NAME "SphinxMan")
   set(CPACK_IFW_COMPONENT_SPHINX-MAN_VERSION "@_CPACK_IFW_PACKAGE_VERSION@")
 
@@ -131,12 +145,14 @@ if(CPACK_GENERATOR MATCHES "IFW")
 
   set(CPACK_COMPONENT_SPHINX-SINGLEHTML_DISPLAY_NAME "Single HTML")
   set(CPACK_COMPONENT_SPHINX-SINGLEHTML_GROUP Documentation)
+  set(CPACK_COMPONENT_SPHINX-SINGLEHTML_DISABLED TRUE)
   set(CPACK_IFW_COMPONENT_SPHINX-SINGLEHTML_NAME "SphinxSingleHTML")
   set(CPACK_IFW_COMPONENT_SPHINX-SINGLEHTML_VERSION
     "@_CPACK_IFW_PACKAGE_VERSION@")
 
   set(CPACK_COMPONENT_SPHINX-QTHELP_DISPLAY_NAME "Qt Compressed Help")
   set(CPACK_COMPONENT_SPHINX-QTHELP_GROUP Documentation)
+  set(CPACK_COMPONENT_SPHINX-QTHELP_DISABLED TRUE)
   set(CPACK_IFW_COMPONENT_SPHINX-QTHELP_NAME "SphinxQtHelp")
   set(CPACK_IFW_COMPONENT_SPHINX-QTHELP_VERSION "@_CPACK_IFW_PACKAGE_VERSION@")
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2c40a1a4b6..5e94028478 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -59,6 +59,17 @@ if(CMAKE_ENCODING_UTF8)
   set(KWSYS_ENCODING_DEFAULT_CODEPAGE CP_UTF8)
 endif()
 
+# option to use COMPONENT with install command
+option(CMake_INSTALL_COMPONENTS "Using components when installing" OFF)
+mark_as_advanced(CMake_INSTALL_COMPONENTS)
+macro(CMake_OPTIONAL_COMPONENT NAME)
+  if(CMake_INSTALL_COMPONENTS)
+    set(COMPONENT COMPONENT ${NAME})
+  else()
+    set(COMPONENT)
+  endif()
+endmacro()
+
 #-----------------------------------------------------------------------
 # a macro to deal with system libraries, implemented as a macro
 # simply to improve readability of the main script
@@ -652,7 +663,6 @@ if(NOT CMake_TEST_EXTERNAL_CMAKE)
     DIRECTORY_PERMISSIONS OWNER_READ OWNER_EXECUTE OWNER_WRITE
                           GROUP_READ GROUP_EXECUTE
                           WORLD_READ WORLD_EXECUTE
-    COMPONENT data
     PATTERN "*.sh*" PERMISSIONS OWNER_READ OWNER_EXECUTE OWNER_WRITE
                                 GROUP_READ GROUP_EXECUTE
                                 WORLD_READ WORLD_EXECUTE
diff --git a/Source/CMakeLists.txt b/Source/CMakeLists.txt
index 83d3090eb8..aa3f675e09 100644
--- a/Source/CMakeLists.txt
+++ b/Source/CMakeLists.txt
@@ -743,7 +743,8 @@ if(APPLE)
 endif()
 
 foreach(_tool ${_tools})
-  install(TARGETS ${_tool} DESTINATION bin COMPONENT ${_tool})
+  CMake_OPTIONAL_COMPONENT(${_tool})
+  install(TARGETS ${_tool} DESTINATION bin ${COMPONENT})
 endforeach()
 
 install(FILES cmCPluginAPI.h DESTINATION ${CMAKE_DATA_DIR}/include)
diff --git a/Source/CursesDialog/CMakeLists.txt b/Source/CursesDialog/CMakeLists.txt
index 14eb46c46a..93ff4256e6 100644
--- a/Source/CursesDialog/CMakeLists.txt
+++ b/Source/CursesDialog/CMakeLists.txt
@@ -47,4 +47,5 @@ else()
   target_link_libraries(ccmake cmForm)
 endif()
 
-install(TARGETS ccmake DESTINATION bin COMPONENT ccmake)
+CMake_OPTIONAL_COMPONENT(ccmake)
+install(TARGETS ccmake DESTINATION bin ${COMPONENT})
diff --git a/Source/QtDialog/CMakeLists.txt b/Source/QtDialog/CMakeLists.txt
index abd440076a..038c411709 100644
--- a/Source/QtDialog/CMakeLists.txt
+++ b/Source/QtDialog/CMakeLists.txt
@@ -14,6 +14,7 @@ project(QtDialog)
 if(POLICY CMP0020)
   cmake_policy(SET CMP0020 NEW) # Drop when CMake >= 2.8.11 required
 endif()
+CMake_OPTIONAL_COMPONENT(cmake-gui)
 find_package(Qt5Widgets QUIET)
 if (Qt5Widgets_FOUND)
   include_directories(${Qt5Widgets_INCLUDE_DIRS})
@@ -48,7 +49,7 @@ if (Qt5Widgets_FOUND)
         set(_qt_plugin_dest "PlugIns/${_qt_plugin_type}")
         install(FILES "${_qt_plugin_path}"
           DESTINATION "${_qt_plugin_dest}"
-          COMPONENT cmake-gui)
+          ${COMPONENT})
         set(${_qt_plugins_var}
           "${${_qt_plugins_var}};\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/${_qt_plugin_dest}/${_qt_plugin_file}")
       else()
@@ -60,7 +61,7 @@ if (Qt5Widgets_FOUND)
       "[Paths]\nPlugins = PlugIns\n")
     install(FILES "${CMAKE_CURRENT_BINARY_DIR}/qt.conf"
       DESTINATION "${CMAKE_INSTALL_PREFIX}/Resources"
-      COMPONENT cmake-gui)
+      ${COMPONENT})
   endif()
 
   if(WIN32 AND TARGET Qt5::Core)
@@ -133,7 +134,7 @@ endif()
 if(CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL)
   install(FILES ${CMake_SOURCE_DIR}/Licenses/LGPLv2.1.txt
     DESTINATION ${CMAKE_DATA_DIR}/Licenses
-    COMPONENT cmake-gui)
+    ${COMPONENT})
   set_property(SOURCE CMakeSetupDialog.cxx
     PROPERTY COMPILE_DEFINITIONS CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL)
 endif()
@@ -166,10 +167,10 @@ if(APPLE)
     )
 endif()
 set(CMAKE_INSTALL_DESTINATION_ARGS
-  BUNDLE DESTINATION "${CMAKE_BUNDLE_LOCATION}" COMPONENT cmake-gui)
+  BUNDLE DESTINATION "${CMAKE_BUNDLE_LOCATION}" ${COMPONENT})
 
 install(TARGETS cmake-gui
-  RUNTIME DESTINATION bin COMPONENT cmake-gui
+  RUNTIME DESTINATION bin ${COMPONENT}
   ${CMAKE_INSTALL_DESTINATION_ARGS})
 
 if(UNIX AND NOT APPLE)
@@ -177,7 +178,7 @@ if(UNIX AND NOT APPLE)
     install(
       FILES       "${CMAKE_CURRENT_SOURCE_DIR}/CMakeSetup${size}.png"
       DESTINATION "share/icons/hicolor/${size}x${size}/apps"
-      COMPONENT cmake-gui
+      ${COMPONENT}
       RENAME      "CMakeSetup.png")
   endforeach ()
 
@@ -185,17 +186,17 @@ if(UNIX AND NOT APPLE)
   # with an icon
   install(FILES CMake.desktop
     DESTINATION share/applications
-    COMPONENT cmake-gui)
+    ${COMPONENT})
   install(FILES cmakecache.xml
     DESTINATION share/mime/packages
-    COMPONENT cmake-gui)
+    ${COMPONENT})
 endif()
 
 if(APPLE)
   install(CODE "
     execute_process(COMMAND ln -s \"../MacOS/CMake\" cmake-gui
         WORKING_DIRECTORY \$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/bin)
-  " COMPONENT cmake-gui)
+  " ${COMPONENT})
 endif()
 
 if(APPLE OR WIN32)
@@ -209,7 +210,7 @@ if(APPLE OR WIN32)
     include(\"${CMake_SOURCE_DIR}/Modules/BundleUtilities.cmake\")
     set(BU_CHMOD_BUNDLE_ITEMS ON)
     fixup_bundle(\"${fixup_exe}\" \"${QT_PLUGINS}\" \"${QT_LIBRARY_DIR};${QT_BINARY_DIR}\")
-  " COMPONENT cmake-gui)
+  " ${COMPONENT})
 endif()
 
 set(CMAKE_PACKAGE_QTGUI TRUE)
diff --git a/Source/QtIFW/installscript.qs.in b/Source/QtIFW/installscript.qs.in
new file mode 100644
index 0000000000..570dba1e0b
--- /dev/null
+++ b/Source/QtIFW/installscript.qs.in
@@ -0,0 +1,24 @@
+function Component()
+{
+    // default constructor
+}
+
+Component.prototype.createOperations = function()
+{
+    // call default implementation to actually install applications!
+    component.createOperations();
+
+    // Create shortcut
+    if (installer.value("os") === "win") {
+
+@_CPACK_IFW_SHORTCUT_OPTIONAL@
+
+        component.addOperation("CreateShortcut",
+                               installer.value("TargetDir") + "/cmake.org.html",
+                               installer.value("StartMenuDir") + "/CMake Web Site.lnk");
+
+        component.addOperation("CreateShortcut",
+                               installer.value("TargetDir") + "/cmake-maintenance.exe",
+                               installer.value("StartMenuDir") + "/CMake Maintenance Tool.lnk");
+    }
+}
diff --git a/Utilities/Sphinx/CMakeLists.txt b/Utilities/Sphinx/CMakeLists.txt
index a76ee26533..77a12558ab 100644
--- a/Utilities/Sphinx/CMakeLists.txt
+++ b/Utilities/Sphinx/CMakeLists.txt
@@ -153,31 +153,35 @@ if(SPHINX_MAN)
     if("x${m}" MATCHES "^x(.+)\\.([1-9])\\.rst$")
       set(name "${CMAKE_MATCH_1}")
       set(sec "${CMAKE_MATCH_2}")
+      CMake_OPTIONAL_COMPONENT(sphinx-man)
       install(FILES ${CMAKE_CURRENT_BINARY_DIR}/man/${name}.${sec}
               DESTINATION ${CMAKE_MAN_DIR}/man${sec}
-              COMPONENT sphinx-man)
+              ${COMPONENT})
     endif()
   endforeach()
 endif()
 
 if(SPHINX_HTML)
+  CMake_OPTIONAL_COMPONENT(sphinx-html)
   install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html
           DESTINATION ${CMAKE_DOC_DIR}
-          COMPONENT sphinx-html
+          ${COMPONENT}
           PATTERN .buildinfo EXCLUDE
           )
 endif()
 
 if(SPHINX_SINGLEHTML)
+  CMake_OPTIONAL_COMPONENT(sphinx-singlehtml)
   install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/singlehtml
           DESTINATION ${CMAKE_DOC_DIR}
-          COMPONENT sphinx-singlehtml
+          ${COMPONENT}
           PATTERN .buildinfo EXCLUDE
           )
 endif()
 
 if(SPHINX_QTHELP)
+  CMake_OPTIONAL_COMPONENT(sphinx-qthelp)
   install(FILES ${CMAKE_CURRENT_BINARY_DIR}/qthelp/CMake-${CMake_VERSION_MAJOR}${CMake_VERSION_MINOR}${CMake_VERSION_PATCH}.qch
-          DESTINATION ${CMAKE_DOC_DIR} COMPONENT sphinx-qthelp
+          DESTINATION ${CMAKE_DOC_DIR} ${COMPONENT}
           )
 endif()