Merge bitcoin#31869: cmake: Add libbitcoinkernel target

3a914ab cmake: Rename `bitcoinkernel` component to `libbitcoinkernel` (Hennadii Stepanov)
7ce09a5 cmake: Add `libbitcoinkernel` target (Hennadii Stepanov)

Pull request description:

  This PR amends bitcoin#31844 by:
  1.  Adding a convenience `libbitcoinkernel` target as a synonym for `bitcoinkernel`.
  2. Renaming the `bitcoinkernel` component to `libbitcoinkernel`, as initially intended in bitcoin#31844

  Here is an example of usage:
  ```sh
  cmake -B build -DBUILD_UTIL_CHAINSTATE=ON
  cmake --build build --target libbitcoinkernel
  cmake --install build --component libbitcoinkernel
  ```

ACKs for top commit:
  s373nZ:
    ACK bitcoin@3a914ab
  theuni:
    ACK 3a914ab
  TheCharlatan:
    ACK 3a914ab
  BrandonOdiwuor:
    Tested ACK 3a914ab

Tree-SHA512: 3576ce6261413ba803711a4448ab8da8a5ad161189ab22be51d40f85b3847547060f537f37cc2d6062c193258f1c61f25df21a1e73cf86336f37705cdfd16d7e

Author: fanquake

src/kernel/CMakeLists.txt

@@ -123,23 +123,27 @@ if(NOT BUILD_SHARED_LIBS)
   set(all_kernel_static_link_libs "")
   get_target_static_link_libs(bitcoinkernel all_kernel_static_link_libs)
 
-  install(TARGETS ${all_kernel_static_link_libs} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT bitcoinkernel)
+  install(TARGETS ${all_kernel_static_link_libs} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT libbitcoinkernel)
   list(TRANSFORM all_kernel_static_link_libs PREPEND "-l")
   # LIBS_PRIVATE is substituted in the pkg-config file.
   list(JOIN all_kernel_static_link_libs " " LIBS_PRIVATE)
 endif()
 
 configure_file(${PROJECT_SOURCE_DIR}/libbitcoinkernel.pc.in ${PROJECT_BINARY_DIR}/libbitcoinkernel.pc @ONLY)
-install(FILES ${PROJECT_BINARY_DIR}/libbitcoinkernel.pc DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig" COMPONENT bitcoinkernel)
+install(FILES ${PROJECT_BINARY_DIR}/libbitcoinkernel.pc DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig" COMPONENT libbitcoinkernel)
+
+# Add a convenience libbitcoinkernel target as a synonym for bitcoinkernel.
+add_custom_target(libbitcoinkernel)
+add_dependencies(libbitcoinkernel bitcoinkernel)
 
 install(TARGETS bitcoinkernel
   RUNTIME
     DESTINATION ${CMAKE_INSTALL_BINDIR}
-    COMPONENT bitcoinkernel
+    COMPONENT libbitcoinkernel
   LIBRARY
     DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    COMPONENT bitcoinkernel
+    COMPONENT libbitcoinkernel
   ARCHIVE
     DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    COMPONENT bitcoinkernel
+    COMPONENT libbitcoinkernel
 )