Move development files in a Debian -dev package

Install targets and files in default Runtime and Development CMake
components to determine files included in the two Debian packages.
Move to CMake minimum version to 3.12 to allow using NAMELINK_COMPONENT
option in install() allowing adding .so files in a separate component,
Developement here.
Use CPack to build the two Debian packages.

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.10)
+cmake_minimum_required(VERSION 3.12)
 project(WiringPiLib)
 
 # Read version from version.h
@@ -37,11 +37,17 @@ set(CPACK_PACKAGE_VERSION_PATCH "")
 set(CPACK_GENERATOR "DEB")
 set(CPACK_DEBIAN_FILE_NAME DEB-DEFAULT)
 set(CPACK_DEBIAN_PACKAGE_MAINTAINER "Grazer Computer Club - GC2 <wiringpi@gc2.at>")
-set(CPACK_DEBIAN_PACKAGE_DEPENDS "libc6, libcrypt1")
-set(CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA
+set(CPACK_DEBIAN_RUNTIME_PACKAGE_DEPENDS "libc6, libcrypt1")
+set(CPACK_DEBIAN_RUNTIME_PACKAGE_CONTROL_EXTRA
     "${CMAKE_CURRENT_SOURCE_DIR}/debian-template/wiringPi/DEBIAN/postinst"
     "${CMAKE_CURRENT_SOURCE_DIR}/debian-template/wiringPi/DEBIAN/postrm")
 
+set(CPACK_DEB_COMPONENT_INSTALL TRUE)
+set(CPACK_DEBIAN_RUNTIME_PACKAGE_NAME "${CPACK_PACKAGE_NAME}")
+set(CPACK_DEBIAN_DEVELOPMENT_PACKAGE_NAME "${CPACK_PACKAGE_NAME}-dev")
+set(CPACK_DEBIAN_ENABLE_COMPONENT_DEPENDS ON)
+set(CPACK_DEBIAN_DEVELOPMENT_PACKAGE_DEPENDS "${CPACK_DEBIAN_RUNTIME_PACKAGE_NAME}")
+
 # Check for arm or arm64 architecture
 # Let CMake determine a value otherwise
 if(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "arm")

devLib/CMakeLists.txt

@@ -1,6 +1,4 @@
 # CMakeLists.txt for devLib
-
-cmake_minimum_required(VERSION 3.10)
 project(devLib)
 
 # Source files
@@ -34,6 +32,6 @@ target_link_libraries(wiringPiDev PRIVATE wiringPi)
 set_target_properties(wiringPiDev PROPERTIES VERSION ${WIRINGPI_VERSION} SOVERSION ${WIRINGPI_VERSION_MAJOR})
 
 # Install headers
-install(FILES ${HEADERS} DESTINATION include)
+install(FILES ${HEADERS} DESTINATION include COMPONENT Development)
 # Install the library
-install(TARGETS wiringPiDev LIBRARY DESTINATION lib)
+install(TARGETS wiringPiDev LIBRARY DESTINATION lib COMPONENT Runtime NAMELINK_COMPONENT Development)

gpio/CMakeLists.txt

@@ -1,6 +1,4 @@
 # CMakeLists.txt for gpio
-
-cmake_minimum_required(VERSION 3.10)
 project(gpio)
 
 find_package(PkgConfig REQUIRED)
@@ -24,7 +22,7 @@ add_executable(gpio ${SRC})
 target_link_libraries(gpio wiringPi wiringPiDev Threads::Threads m PkgConfig::libcrypt)
 
 # Install the executable
-install(TARGETS gpio DESTINATION bin)
+install(TARGETS gpio DESTINATION bin COMPONENT Runtime)
 
 # Install man page
-install(FILES gpio.1 DESTINATION share/man/man1)
+install(FILES gpio.1 DESTINATION share/man/man1 COMPONENT Runtime)

pins/CMakeLists.txt

@@ -1,6 +1,4 @@
 # CMakeLists.txt for pins
-
-cmake_minimum_required(VERSION 3.10)
 project(pins LANGUAGES NONE)
 
 # Source file

wiringPi/CMakeLists.txt

@@ -1,6 +1,4 @@
 # CMakeLists.txt for wiringPi
-
-cmake_minimum_required(VERSION 3.10)
 project(WiringPi)
 
 # Source files
@@ -55,6 +53,6 @@ target_include_directories(wiringPi PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
 # Add -lm to link with the math library
 target_link_libraries(wiringPi PUBLIC m crypt)
 # Install headers
-install(FILES ${HEADERS} DESTINATION include)
+install(FILES ${HEADERS} DESTINATION include COMPONENT Development)
 # Install the library
-install(TARGETS wiringPi LIBRARY DESTINATION lib)
+install(TARGETS wiringPi LIBRARY DESTINATION lib COMPONENT Runtime NAMELINK_COMPONENT Development)

wiringPiD/CMakeLists.txt

@@ -1,6 +1,4 @@
 # CMakeLists.txt for wiringPiD
-
-cmake_minimum_required(VERSION 3.10)
 project(wiringPiD)
 
 # Source files