diff --git a/CMakeLists.txt b/CMakeLists.txt
index e47891d..26c1d8d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,6 +22,15 @@
 
 cmake_minimum_required(VERSION 3.9)
 
+include(GNUInstallDirs)
+
+configure_file(
+    "${CMAKE_SOURCE_DIR}/pathnames.h.in"
+    "${CMAKE_BINARY_DIR}/pathnames.h"
+)
+
+include_directories("${CMAKE_BINARY_DIR}")
+
 project(sj3
     VERSION 2.0.94
     LANGUAGES C
diff --git a/pathnames.h.in b/pathnames.h.in
new file mode 100644
index 0000000..23011d4
--- /dev/null
+++ b/pathnames.h.in
@@ -0,0 +1,32 @@
+/*-
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright (c) 2023  Masanori Ogino
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef SJ3_PATHNAMES_H_
+#define SJ3_PATHNAMES_H_
+
+#define _PATH_SJ3_CONF_FILE	"@CMAKE_INSTALL_FULL_SYSCONFDIR@/sj3.conf"
+#define _PATH_SJ3_LOCK_FILE	"@CMAKE_INSTALL_FULL_RUNSTATEDIR@/sj3.lock"
+#define _PATH_SJ3_SOCK_FILE	"@CMAKE_INSTALL_FULL_RUNSTATEDIR@/sj3.sock"
+
+#endif
diff --git a/sj3serv/sj3serv.c b/sj3serv/sj3serv.c
index 26735b4..21eb368 100644
--- a/sj3serv/sj3serv.c
+++ b/sj3serv/sj3serv.c
@@ -27,6 +27,8 @@
  * @brief かな漢字変換サーバーのエントリーポイント。
  */
 
+#include "pathnames.h"
+
 int
 main(int argc, char *argv[])
 {