diff --git a/port/threadx_smp/CMakeLists.txt b/port/threadx_smp/CMakeLists.txt
index 0cffc7e..74dd720 100644
--- a/port/threadx_smp/CMakeLists.txt
+++ b/port/threadx_smp/CMakeLists.txt
@@ -1,6 +1,8 @@
 cmake_minimum_required(VERSION 3.24)
 project(smp_demo LANGUAGES C ASM)
 
+include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/ThreadXSmpOffsets.cmake)
+
 set(THREADX_COMMON_SMP_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../third-party/threadx/common_smp)
 if(NOT EXISTS "${THREADX_COMMON_SMP_DIR}")
     message(FATAL_ERROR "could not find ThreadX SMP sources, is the submodule checked out?")
@@ -26,27 +28,21 @@ set(THREADX_SMP_CUSTOM_SRC
     src/tx_thread_stack_build.S
     src/tx_thread_system_return.S
 )
-set(THREADX_SMP_GENERATED_INC_DIR ${CMAKE_CURRENT_BINARY_DIR}/generated)
-set(THREADX_SMP_OFFSET_SOURCE ${CMAKE_CURRENT_SOURCE_DIR}/src/tx_asm_offsets.c)
-set(THREADX_SMP_OFFSET_ASM ${THREADX_SMP_GENERATED_INC_DIR}/tx_asm_offsets.s)
-set(THREADX_SMP_OFFSET_INC ${THREADX_SMP_GENERATED_INC_DIR}/tx_asm_offsets.inc)
-set(THREADX_SMP_OFFSET_INCLUDE_DIRS
-    ${THREADX_COMMON_SMP_DIR}/inc
-    ${THREADX_SMP_CUSTOM_INC}
+
+threadx_smp_add_offsets(
+    TARGET threadx_smp_offsets
+    OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR}/generated
+    SOURCE ${CMAKE_CURRENT_SOURCE_DIR}/src/tx_asm_offsets.c
+    INCLUDE_DIRS
+        ${THREADX_COMMON_SMP_DIR}/inc
+        ${THREADX_SMP_CUSTOM_INC}
+    COMPILE_DEFINITIONS
+        TX_QUEUE_MESSAGE_MAX_SIZE=16
+    DEPENDS
+        ${CMAKE_CURRENT_SOURCE_DIR}/inc/tx_port.h
+        ${THREADX_COMMON_SMP_DIR}/inc/tx_api.h
+    OUT_INCLUDE_DIR THREADX_SMP_GENERATED_INC_DIR
 )
-set(THREADX_SMP_OFFSET_COMPILE_DEFINITIONS
-    TX_QUEUE_MESSAGE_MAX_SIZE=16
-)
-set(THREADX_SMP_OFFSET_INCLUDE_ARGS ${THREADX_SMP_OFFSET_INCLUDE_DIRS})
-list(TRANSFORM THREADX_SMP_OFFSET_INCLUDE_ARGS PREPEND -I)
-set(THREADX_SMP_OFFSET_DEFINE_ARGS ${THREADX_SMP_OFFSET_COMPILE_DEFINITIONS})
-list(TRANSFORM THREADX_SMP_OFFSET_DEFINE_ARGS PREPEND -D)
-set(THREADX_SMP_OFFSET_CFLAGS ${CMAKE_C_FLAGS})
-if(CMAKE_BUILD_TYPE)
-    string(TOUPPER ${CMAKE_BUILD_TYPE} THREADX_SMP_BUILD_TYPE_UPPER)
-    list(APPEND THREADX_SMP_OFFSET_CFLAGS ${CMAKE_C_FLAGS_${THREADX_SMP_BUILD_TYPE_UPPER}})
-endif()
-separate_arguments(THREADX_SMP_OFFSET_CFLAGS)
 
 file(GLOB THREADX_SMP_SOURCES ${THREADX_COMMON_SMP_DIR}/src/*.c)
 add_library(threadx_smp STATIC)
@@ -62,32 +58,6 @@ target_include_directories(threadx_smp PRIVATE
     ${THREADX_SMP_GENERATED_INC_DIR}
 )
 target_compile_definitions(threadx_smp PRIVATE TX_QUEUE_MESSAGE_MAX_SIZE=16) #This is addressed in PR #503
-
-add_custom_command(
-    OUTPUT ${THREADX_SMP_OFFSET_INC}
-    COMMAND ${CMAKE_COMMAND} -E make_directory ${THREADX_SMP_GENERATED_INC_DIR}
-    COMMAND ${CMAKE_C_COMPILER}
-    ${CMAKE_C_COMPILER_ARG1}
-    ${THREADX_SMP_OFFSET_CFLAGS}
-    ${THREADX_SMP_OFFSET_INCLUDE_ARGS}
-    ${THREADX_SMP_OFFSET_DEFINE_ARGS}
-    -S
-    -o ${THREADX_SMP_OFFSET_ASM}
-    ${THREADX_SMP_OFFSET_SOURCE}
-    COMMAND ${CMAKE_COMMAND}
-    -DINPUT=${THREADX_SMP_OFFSET_ASM}
-    -DOUTPUT=${THREADX_SMP_OFFSET_INC}
-    -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/GenerateAsmOffsets.cmake
-    DEPENDS
-    ${THREADX_SMP_OFFSET_SOURCE}
-    ${CMAKE_CURRENT_SOURCE_DIR}/cmake/GenerateAsmOffsets.cmake
-    ${CMAKE_CURRENT_SOURCE_DIR}/inc/tx_port.h
-    ${THREADX_COMMON_SMP_DIR}/inc/tx_api.h
-    COMMAND_EXPAND_LISTS
-    VERBATIM
-)
-
-add_custom_target(threadx_smp_offsets DEPENDS ${THREADX_SMP_OFFSET_INC})
 add_dependencies(threadx_smp threadx_smp_offsets)
 
 add_executable(smp_demo)
diff --git a/port/threadx_smp/cmake/ThreadXSmpOffsets.cmake b/port/threadx_smp/cmake/ThreadXSmpOffsets.cmake
new file mode 100644
index 0000000..1de4447
--- /dev/null
+++ b/port/threadx_smp/cmake/ThreadXSmpOffsets.cmake
@@ -0,0 +1,67 @@
+function(threadx_smp_add_offsets)
+    set(options)
+    set(oneValueArgs TARGET OUTPUT_DIR SOURCE OUT_INCLUDE_DIR)
+    set(multiValueArgs INCLUDE_DIRS COMPILE_DEFINITIONS DEPENDS)
+    cmake_parse_arguments(THREADX_SMP_OFFSETS "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
+
+    if(NOT THREADX_SMP_OFFSETS_TARGET)
+        message(FATAL_ERROR "threadx_smp_add_offsets requires TARGET")
+    endif()
+
+    if(NOT THREADX_SMP_OFFSETS_OUTPUT_DIR)
+        message(FATAL_ERROR "threadx_smp_add_offsets requires OUTPUT_DIR")
+    endif()
+
+    if(NOT THREADX_SMP_OFFSETS_SOURCE)
+        message(FATAL_ERROR "threadx_smp_add_offsets requires SOURCE")
+    endif()
+
+    if(NOT THREADX_SMP_OFFSETS_OUT_INCLUDE_DIR)
+        message(FATAL_ERROR "threadx_smp_add_offsets requires OUT_INCLUDE_DIR")
+    endif()
+
+    set(threadx_smp_generate_script "${CMAKE_CURRENT_FUNCTION_LIST_DIR}/GenerateAsmOffsets.cmake")
+    set(threadx_smp_offset_asm "${THREADX_SMP_OFFSETS_OUTPUT_DIR}/tx_asm_offsets.s")
+    set(threadx_smp_offset_inc "${THREADX_SMP_OFFSETS_OUTPUT_DIR}/tx_asm_offsets.inc")
+
+    set(threadx_smp_offset_include_args ${THREADX_SMP_OFFSETS_INCLUDE_DIRS})
+    list(TRANSFORM threadx_smp_offset_include_args PREPEND -I)
+
+    set(threadx_smp_offset_define_args ${THREADX_SMP_OFFSETS_COMPILE_DEFINITIONS})
+    list(TRANSFORM threadx_smp_offset_define_args PREPEND -D)
+
+    set(threadx_smp_offset_cflags ${CMAKE_C_FLAGS})
+    if(CMAKE_BUILD_TYPE)
+        string(TOUPPER "${CMAKE_BUILD_TYPE}" threadx_smp_build_type_upper)
+        list(APPEND threadx_smp_offset_cflags ${CMAKE_C_FLAGS_${threadx_smp_build_type_upper}})
+    endif()
+    separate_arguments(threadx_smp_offset_cflags)
+
+    add_custom_command(
+        OUTPUT ${threadx_smp_offset_inc}
+        BYPRODUCTS ${threadx_smp_offset_asm}
+        COMMAND ${CMAKE_COMMAND} -E make_directory ${THREADX_SMP_OFFSETS_OUTPUT_DIR}
+        COMMAND ${CMAKE_C_COMPILER}
+        ${CMAKE_C_COMPILER_ARG1}
+        ${threadx_smp_offset_cflags}
+        ${threadx_smp_offset_include_args}
+        ${threadx_smp_offset_define_args}
+        -S
+        -o ${threadx_smp_offset_asm}
+        ${THREADX_SMP_OFFSETS_SOURCE}
+        COMMAND ${CMAKE_COMMAND}
+        -DINPUT=${threadx_smp_offset_asm}
+        -DOUTPUT=${threadx_smp_offset_inc}
+        -P ${threadx_smp_generate_script}
+        DEPENDS
+        ${THREADX_SMP_OFFSETS_SOURCE}
+        ${threadx_smp_generate_script}
+        ${THREADX_SMP_OFFSETS_DEPENDS}
+        COMMAND_EXPAND_LISTS
+        VERBATIM
+    )
+
+    add_custom_target(${THREADX_SMP_OFFSETS_TARGET} DEPENDS ${threadx_smp_offset_inc})
+
+    set(${THREADX_SMP_OFFSETS_OUT_INCLUDE_DIR} ${THREADX_SMP_OFFSETS_OUTPUT_DIR} PARENT_SCOPE)
+endfunction()