# CPack Example: User-selectable Installation Components
#
# In this example, we have a simple library (mylib) with an example
# application (mylibapp). We create a binary installer that allows
# users to select which pieces will be installed: the example
# application, the library binaries, and/or the header file.
cmake_minimum_required(VERSION 3.5)
project(CPackComponents)

# Create the mylib library
add_library(mylib mylib.cpp)

# Create the mylibapp application
add_executable(mylibapp mylibapp.cpp)
target_link_libraries(mylibapp mylib)

# On Linux, enable using an absolute install path to verify that
# CMAKE_INSTALL_PREFIX and CPACK_SET_DESTDIR interact properly.
#
# But only use absolute paths if not targeting an NSIS installer
# as indicated by CPACK_BINARY_NSIS. (If we allow this, the test
# fails on Linux machines with makensis installed when we are not
# cross-compiling...)
#
if(UNIX AND NOT APPLE)
  if(NOT CPACK_BINARY_NSIS)
    set(mylib_install_to_absolute_path ON)
  endif()
endif()

if(mylib_install_to_absolute_path)
  set(CMAKE_INSTALL_PREFIX "/opt/mylib")
  set(CPACK_SET_DESTDIR ON)
endif()

# Create installation targets. Note that we put each kind of file
# into a different component via COMPONENT. These components will
# be used to create the installation components.
install(TARGETS mylib
  ARCHIVE
  DESTINATION lib
  COMPONENT libraries)
install(TARGETS mylibapp
  RUNTIME
  DESTINATION bin
  COMPONENT applications)
install(FILES mylib.h
  DESTINATION include
  COMPONENT headers)
install(FILES "Issue 7470.html"
  DESTINATION docs
  COMPONENT documentation)

if(mylib_install_to_absolute_path)
 install(FILES mylib.cpp
    DESTINATION /opt/mylib-source
    COMPONENT source)
endif()

# CPack boilerplate for this project
set(CPACK_PACKAGE_NAME "MyLib")
set(CPACK_PACKAGE_VENDOR "CMake.org")
set(CPACK_PACKAGE_CONTACT "somebody@cmake.org")
set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "MyLib - CPack Component Installation Example")
set(CPACK_PACKAGE_VERSION "1.0.0")
set(CPACK_PACKAGE_VERSION_MAJOR "1")
set(CPACK_PACKAGE_VERSION_MINOR "0")
set(CPACK_PACKAGE_VERSION_PATCH "0")
set(CPACK_PACKAGE_INSTALL_DIRECTORY "CPack Component Example")

# Settings used when building NSIS installers
set(CPACK_NSIS_MENU_LINKS
  "ftp://ftpserver" "Test Ftp Link"
  "ftps://ftpsserver" "Test Ftps Link"
  "https://cmake.org" "CMake Web Site"
  "https://github.com/" "Test Https Link"
  "mailto:kitware@kitware.com" "Test MailTo Link"
  "news://newsserver" "Test News Link"
  )

# Suggested default root for end users of the installer:
set(CPACK_NSIS_INSTALL_ROOT "C:/Program Files/CMake Tests Install Root")

# Include CPack to introduce the appropriate targets
include(CPack)

# Installation types
cpack_add_install_type(Full
  DISPLAY_NAME "Everything")
cpack_add_install_type(Developer)

# Component groups
cpack_add_component_group(Runtime)
cpack_add_component_group(Development
  EXPANDED
  DESCRIPTION "All of the tools you'll ever need to develop software")

# Components
cpack_add_component(applications
  DISPLAY_NAME "MyLib Application"
  DESCRIPTION "An extremely useful application that makes use of MyLib"
  GROUP Runtime
  INSTALL_TYPES Full)
cpack_add_component(documentation
  DISPLAY_NAME "MyLib Documentation"
  DESCRIPTION "The extensive suite of MyLib Application documentation files"
  GROUP Runtime
  INSTALL_TYPES Full)
cpack_add_component(libraries
  DISPLAY_NAME "Libraries"
  DESCRIPTION "Static libraries used to build programs with MyLib"
  GROUP Development
  INSTALL_TYPES Developer Full)
cpack_add_component(headers
  DISPLAY_NAME "C++ Headers"
  DESCRIPTION "C/C++ header files for use with MyLib"
  GROUP Development
  DEPENDS libraries
  INSTALL_TYPES Developer Full)

if(mylib_install_to_absolute_path)
  cpack_add_component(source
    DISPLAY_NAME "C++ Source Files"
    DESCRIPTION "C/C++ source files to build MyLib"
    GROUP Development
    DEPENDS libraries
    INSTALL_TYPES Developer Full)
endif()