diff --git a/.gitignore b/.gitignore
index 241838c..a0c3471 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,6 @@
 **/build-*/
 **/cmake-build-*/
 Testing
+
+# Auto generated files
+/include/scale/definitions.hpp
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4f5c022..4ef9de1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,9 +6,9 @@
 
 cmake_minimum_required(VERSION 3.12)
 
-if(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.27")
+if (${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.27")
     cmake_policy(SET CMP0144 NEW)
-endif()
+endif ()
 
 include(${CMAKE_CURRENT_LIST_DIR}/cmake/HunterGate.cmake)
 
@@ -36,11 +36,21 @@ find_package(Boost CONFIG REQUIRED)
 hunter_add_package(qtils)
 find_package(qtils CONFIG REQUIRED)
 
-if (JAM_COMPATIBLE)
-    add_compile_definitions(JAM_COMPATIBILITY_ENABLED)
-endif ()
-if (CUSTOM_CONFIG_SUPPORT)
-    add_compile_definitions(CUSTOM_CONFIG_ENABLED)
+set(DEFINITION_PATH "${CMAKE_CURRENT_SOURCE_DIR}/include/scale/definitions.hpp")
+if (NOT EXISTS "${CMAKE_BINARY_DIR}/definition.d" OR NOT EXISTS "${DEFINITION_PATH}")
+    get_filename_component(LABEL "${CMAKE_BINARY_DIR}" NAME)
+    file(WRITE "${DEFINITION_PATH}.${LABEL}"
+            "// This header was generated by cmake (${LABEL})\n"
+            "// IMPORTANT: Dont modify this file manually!\n")
+    if (JAM_COMPATIBLE)
+        file(APPEND "${DEFINITION_PATH}.${LABEL}" "#define JAM_COMPATIBILITY_ENABLED\n")
+    endif ()
+    if (CUSTOM_CONFIG_SUPPORT)
+        file(APPEND "${DEFINITION_PATH}.${LABEL}" "#define CUSTOM_CONFIG_ENABLED\n")
+    endif ()
+    file(RENAME "${DEFINITION_PATH}.${LABEL}" "${DEFINITION_PATH}")
+    message(STATUS "include/scale/definitions.hpp has generated")
+    file(WRITE "${CMAKE_BINARY_DIR}/definition.d" "include/scale/definitions.hpp has generated")
 endif ()
 
 add_subdirectory(src)
@@ -63,7 +73,7 @@ install(TARGETS scale EXPORT scaleConfig
     INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
     PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
     FRAMEWORK DESTINATION ${CMAKE_INSTALL_PREFIX}
-    )
+)
 
 install(
     DIRECTORY ${CMAKE_SOURCE_DIR}/include/scale
diff --git a/include/scale/configurable.hpp b/include/scale/configurable.hpp
index 002cd52..c320360 100644
--- a/include/scale/configurable.hpp
+++ b/include/scale/configurable.hpp
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <scale/definitions.hpp>
 #ifdef CUSTOM_CONFIG_ENABLED
 #include <any>
 #endif
@@ -68,4 +69,4 @@ namespace scale {
 #endif
   };
 
-}  // namespace scale
\ No newline at end of file
+}  // namespace scale
diff --git a/include/scale/scale_decoder_stream.hpp b/include/scale/scale_decoder_stream.hpp
index 61010af..7be6465 100644
--- a/include/scale/scale_decoder_stream.hpp
+++ b/include/scale/scale_decoder_stream.hpp
@@ -16,6 +16,7 @@
 #include <boost/variant.hpp>
 
 #include <scale/bitvec.hpp>
+#include <scale/definitions.hpp>
 #include <scale/detail/fixed_width_integer.hpp>
 #ifdef JAM_COMPATIBILITY_ENABLED
 #include <scale/detail/jam_compact_integer.hpp>
diff --git a/include/scale/scale_encoder_stream.hpp b/include/scale/scale_encoder_stream.hpp
index e76dccc..25ecf34 100644
--- a/include/scale/scale_encoder_stream.hpp
+++ b/include/scale/scale_encoder_stream.hpp
@@ -16,6 +16,7 @@
 #include <boost/variant.hpp>
 
 #include <scale/bitvec.hpp>
+#include <scale/definitions.hpp>
 #include <scale/detail/fixed_width_integer.hpp>
 #ifdef JAM_COMPATIBILITY_ENABLED
 #include <scale/detail/jam_compact_integer.hpp>
diff --git a/test/scale_tune_test.cpp b/test/scale_tune_test.cpp
index 9bb16b4..62045a4 100644
--- a/test/scale_tune_test.cpp
+++ b/test/scale_tune_test.cpp
@@ -4,15 +4,14 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+#include <gtest/gtest.h>
+#include <scale/scale.hpp>
+
 #ifndef CUSTOM_CONFIG_ENABLED
 #error \
-    "This file should not be compiled, because custom config support is not enabed"
+"This file should not be compiled, because custom config support is not enabed"
 #endif
 
-#include <gtest/gtest.h>
-
-#include <scale/scale.hpp>
-
 using scale::ByteArray;
 using scale::CompactInteger;
 using scale::decode;