diff --git a/README.md b/README.md
index 6cfaa25..4488921 100644
--- a/README.md
+++ b/README.md
@@ -32,9 +32,10 @@ Feel free to raise a github issue if you wish to add TIM-VX for other frameworks
 
 ## Build and Run
 
-TIM-VX supports both [bazel](https://bazel.build) and cmake.
+TIM-VX supports both [bazel](https://bazel.build) and [cmake](https://cmake.org).
 
-### Cmake
+----
+### cmake
 
 To build TIM-VX for x86 with prebuilt:
 
@@ -48,16 +49,19 @@ make install
 
 All install files (both headers and *.so) is located in : `host_build/install`
 
-Cmake option:
+cmake options:
 
-`CONFIG`: Set Target Platform. Such as: `A311D`, `S905D3`, `vim3_android`, `YOCTO`. Default is `X86_64_linux`.
-
-`TIM_VX_ENABLE_TEST`: Build the unit test. Default is OFF.
-
-`TIM_VX_USE_EXTERNAL_OVXLIB`: Use external OVXLIB. Default is OFF.
-
-`EXTERNAL_VIV_SDK`: use external VX driver libs. By default is OFF.
+| option name | Summary | Default |
+| ----- | ----- | ----- | 
+|`TIM_VX_ENABLE_TEST`| Enable unit test case for public APIs and ops | OFF |
+|`TIM_VX_ENABLE_LAYOUT_INFER`| Build with tensor data layout inference support| ON |
+|`TIM_VX_USE_EXTERNAL_OVXLIB`| Replace internal with a prebuilt libovxlib library | OFF |
+|`OVXLIB_LIB`|full path to libovxlib.so include so name, required if `TIM_VX_USE_EXTERNAL_OVXLIB`=ON | Not set |
+|`OVXLIB_INC`|ovxlib's include path, required if `TIM_VX_USE_EXTERNAL_OVXLIB`=ON| Not set |
+|`EXTERNAL_VIV_SDK`| Give external vivante openvx driver libraries | OFF |
+|`TIM_VX_BUILD_EXAMPLES`| Build example applications | OFF |
 
+----
 run unit test:
 
 ```shell
@@ -80,6 +84,7 @@ export DISABLE_IDE_DEBUG=1
     cmake ../ -DTIM_VX_ENABLE_TEST=ON -DFETCHCONTENT_SOURCE_DIR_GOOGLETEST=<wksp_root/googletest> <add other cmake define here>
 ```
 
+----
 #### Build for your evk-board
 
 1. prepare toolchain file follow cmake standard
@@ -87,11 +92,11 @@ export DISABLE_IDE_DEBUG=1
 3. add -DEXTERNAL_VIV_SDK=<low-level-driver/out/sdk> to cmake definitions, also remember -DCMAKE_TOOLCHAIN_FILE=<Your_Toolchain_Config>
 4. then make
 
-
-#### Notes for integration
+----
+#### Important notice for integration
 If you want to build tim-vx as a static library, and link it to your shared library or application, please be carefull with the linker, "-Wl,--whole-archive" is required.
 
-@see samples/lenet/CMakeLists.txt for reference
+@see **samples/lenet/CMakeLists.txt** for reference
 
 ### Bazel