kernel: Add pure kernel bitcoin-chainstate

Re-write the bitcoin-chainstate utility by only using the kernel C++ API
header instead of internal Bitcoin Core code.

Author: sedited

src/CMakeLists.txt

@@ -407,27 +407,26 @@ if(BUILD_KERNEL_LIB)
   if (BUILD_KERNEL_TEST)
     add_subdirectory(test/kernel)
   endif()
-endif()
-
-if(BUILD_UTIL_CHAINSTATE)
-  add_executable(bitcoin-chainstate
-    bitcoin-chainstate.cpp
-  )
-  # TODO: The `SKIP_BUILD_RPATH` property setting can be deleted
-  #       in the future after reordering Guix script commands to
-  #       perform binary checks after the installation step.
-  # Relevant discussions:
-  # - https://github.com/hebasto/bitcoin/pull/236#issuecomment-2183120953
-  # - https://github.com/bitcoin/bitcoin/pull/30312#issuecomment-2191235833
-  set_target_properties(bitcoin-chainstate PROPERTIES
-    SKIP_BUILD_RPATH OFF
-  )
-  target_link_libraries(bitcoin-chainstate
-    PRIVATE
-      core_interface
-      bitcoinkernel
-  )
-  install_binary_component(bitcoin-chainstate INTERNAL)
+  if(BUILD_UTIL_CHAINSTATE)
+    add_executable(bitcoin-chainstate
+      bitcoin-chainstate.cpp
+    )
+    # TODO: The `SKIP_BUILD_RPATH` property setting can be deleted
+    #       in the future after reordering Guix script commands to
+    #       perform binary checks after the installation step.
+    # Relevant discussions:
+    # - https://github.com/hebasto/bitcoin/pull/236#issuecomment-2183120953
+    # - https://github.com/bitcoin/bitcoin/pull/30312#issuecomment-2191235833
+    set_target_properties(bitcoin-chainstate PROPERTIES
+      SKIP_BUILD_RPATH OFF
+    )
+    target_link_libraries(bitcoin-chainstate
+      PRIVATE
+        core_interface
+        bitcoinkernel
+    )
+    install_binary_component(bitcoin-chainstate INTERNAL)
+  endif()
 endif()