diff --git a/CMakeLists.txt b/CMakeLists.txt
index c0dd1a5..716ee35 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,9 +1,25 @@
-cmake_minimum_required(VERSION 3.21)
+cmake_minimum_required(VERSION 3.25)
 project(adbd LANGUAGES C)
 
 include(cmake/bfdev.cmake)
 include(cmake/sanitize.cmake)
 
+set(XDBD_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
+set(XDBD_GENERATED_PATH ${PROJECT_BINARY_DIR}/generated)
+
+if(LINUX)
+    set(XDBD_LINUX TRUE)
+elseif(APPLE)
+    set(XDBD_OSX TRUE)
+elseif(WIN32)
+    set(XDBD_WIN TRUE)
+endif()
+
+configure_file(
+    ${XDBD_MODULE_PATH}/xdbd_config.h.in
+    ${XDBD_GENERATED_PATH}/xdbd_config.h
+)
+
 set(HEADERS
     ${PROJECT_SOURCE_DIR}/include/xdbd.h
     ${PROJECT_SOURCE_DIR}/include/xdbd_config.h
@@ -38,6 +54,7 @@ set(
 )
 
 include_directories(${XADB_INCLUDES})
+include_directories(${XDBD_GENERATED_PATH})
 
 add_executable(adbd ${SRCS})
 
diff --git a/cmake/xdbd_config.h.in b/cmake/xdbd_config.h.in
new file mode 100644
index 0000000..2ed3dd5
--- /dev/null
+++ b/cmake/xdbd_config.h.in
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright(c) 2024 John Sanpe <sanpeqf@gmail.com>
+ */
+
+#ifndef __XDBD_CONFIG__H__
+#define __XDBD_CONFIG__H__
+
+#cmakedefine XDBD_LINUX
+#cmakedefine XDBD_OSX
+#cmakedefine XDBD_WIN
+
+#endif /* __XDBD_CONFIG__H__ */