From b49a4305ed558bb5fcaa08da4996bb5f51465efa Mon Sep 17 00:00:00 2001
From: AlefLm <aleflm@proton.me>
Date: Sun, 15 Dec 2024 01:48:45 +0000
Subject: [PATCH] doc: add initial cmake support

---
 doc/CMakeLists.txt | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 doc/CMakeLists.txt

diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
new file mode 100644
index 0000000000..310a90612b
--- /dev/null
+++ b/doc/CMakeLists.txt
@@ -0,0 +1,25 @@
+# Copyright (c) 2024-present The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or https://opensource.org/license/mit/.
+
+find_package(Doxygen COMPONENTS dot)
+
+if(DOXYGEN_FOUND)
+  set(doxyfile ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)
+  configure_file(Doxyfile.in ${doxyfile} USE_SOURCE_PERMISSIONS)
+
+  # In CMake 3.27, The FindDoxygen module's doxygen_add_docs()
+  # command gained a CONFIG_FILE option to specify a custom doxygen
+  # configuration file.
+  # TODO: Consider using it.
+  add_custom_target(docs
+    COMMAND Doxygen::doxygen ${doxyfile}
+    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+    COMMENT "Generating developer documentation"
+    VERBATIM USES_TERMINAL
+  )
+else()
+  add_custom_target(docs
+    COMMAND ${CMAKE_COMMAND} -E echo "Error: Doxygen not found"
+  )
+endif()