diff --git a/CMakeLists.txt b/CMakeLists.txt
index c0dd1a5..c6ac35b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,12 +1,27 @@
-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_CONFIG_LINUX TRUE)
+elseif(APPLE)
+    set(XDBD_CONFIG_OSX TRUE)
+elseif(WIN32)
+    set(XDBD_CONFIG_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
 )
 
 set(SRCS
@@ -38,6 +53,7 @@ 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..a77ada2
--- /dev/null
+++ b/cmake/xdbd_config.h.in
@@ -0,0 +1,14 @@
+/* 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_CONFIG_LINUX
+#cmakedefine XDBD_CONFIG_OSX
+#cmakedefine XDBD_CONFIG_WIN
+
+#define XDBD_HAVE_SELECT 1
+#endif /* __XDBD_CONFIG__H__ */
diff --git a/include/xdbd_config.h b/include/xdbd_config.h
deleted file mode 100644
index 806c379..0000000
--- a/include/xdbd_config.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef __XDBD_CONFIG__H__
-#define __XDBD_CONFIG__H__
-
-#define XDBD_HAVE_SELECT 1
-
-
-#endif  /*__XDBD_CONFIG__H__*/