diff --git a/.gitignore b/.gitignore
index 2b9d3d2..197f167 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /.idea/
 /cmake-build-debug/
 /cmake-build-release/
+/src/klotski/utils/version.h
diff --git a/src/klotski/CMakeLists.txt b/src/klotski/CMakeLists.txt
index dfb2779..9b3ba76 100644
--- a/src/klotski/CMakeLists.txt
+++ b/src/klotski/CMakeLists.txt
@@ -1,6 +1,8 @@
 cmake_minimum_required(VERSION 3.0)
 
-project(klotski-core LANGUAGES CXX)
+project(klotski-core VERSION 0.0.1 LANGUAGES CXX)
+
+configure_file(utils/version.h.in ${PROJECT_SOURCE_DIR}/utils/version.h)
 
 set(CMAKE_CXX_STANDARD 14)
 
@@ -36,10 +38,16 @@ add_subdirectory(benchmark)
 
 ################################################################
 
-add_library(klotski-ffi OBJECT ffi/codec.cc ffi/tmain.cc)
+set(FFI_SRC codec.cc tmain.cc version.cc)
+list(TRANSFORM FFI_SRC PREPEND "ffi/")
+add_library(klotski-ffi OBJECT ${FFI_SRC})
 
-add_library(klotski SHARED $<TARGET_OBJECTS:klotski-ffi>)
-#add_library(klotski STATIC $<TARGET_OBJECTS:klotski-core>)
+option(SHARED_LIB "build static library" ON)
+if (SHARED_LIB)
+    add_library(klotski SHARED $<TARGET_OBJECTS:klotski-ffi>)
+else()
+    add_library(klotski STATIC $<TARGET_OBJECTS:klotski-ffi>)
+endif()
 
 ################################################################
 
diff --git a/src/klotski/ffi/klotski.h b/src/klotski/ffi/klotski.h
index ec2d715..1f2ee51 100644
--- a/src/klotski/ffi/klotski.h
+++ b/src/klotski/ffi/klotski.h
@@ -17,6 +17,23 @@ extern "C" {
 }
 #endif
 
+/// --------------------------------- klotski version info ----------------------------------
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+//    extern char* get_author();
+//    extern char* get_project_url();
+//    extern char* get_compile_time();
+
+    /// version -> major.minor.patch
+    extern int get_version_major();
+    extern int get_version_minor();
+    extern int get_version_patch();
+#ifdef __cplusplus
+}
+#endif
+
 /// -------------------------------- klotski codec interface --------------------------------
 
 #ifdef __cplusplus
diff --git a/src/klotski/ffi/version.cc b/src/klotski/ffi/version.cc
new file mode 100644
index 0000000..7966d53
--- /dev/null
+++ b/src/klotski/ffi/version.cc
@@ -0,0 +1,14 @@
+#include "klotski.h"
+#include "version.h"
+
+int get_version_major() {
+    return VERSION_MAJOR;
+}
+
+int get_version_minor() {
+    return VERSION_MINOR;
+}
+
+int get_version_patch() {
+    return VERSION_PATCH;
+}
diff --git a/src/klotski/utils/version.h.in b/src/klotski/utils/version.h.in
new file mode 100644
index 0000000..af544f7
--- /dev/null
+++ b/src/klotski/utils/version.h.in
@@ -0,0 +1,5 @@
+#pragma once
+
+#define VERSION_MAJOR @klotski-core_VERSION_MAJOR@
+#define VERSION_MINOR @klotski-core_VERSION_MINOR@
+#define VERSION_PATCH @klotski-core_VERSION_PATCH@
diff --git a/src/main.c b/src/main.c
index 43e4d6c..5cb3987 100644
--- a/src/main.c
+++ b/src/main.c
@@ -57,6 +57,8 @@ int main() {
         printf("short code -> %d\n", short_code);
     }
 
+    printf("version -> %d.%d.%d\n", get_version_major(), get_version_minor(), get_version_patch());
+
 //    printf("cli exit\n");
     return 0;
 }