How can the code "create_hex" work in bootloader's cmakelists?

[ZHENGXIANG]

From the cmakelists of bootloader in Meshv320src, I found the code "create_hex" but this code cannot found in CMake's document. How can it work to generate the hex file?

[Mttrinh]

Hi,

Have a look at our documentation on infocenter: Building with CMake

[ZHENGXIANG]

I have read this document, but it does not talk about the command used IN cmakelists. For common cmake, create_hex is illegal and cannot work.

Moreover, when I want to compile, it shows:

CMAKE ERROR at CMakelists.txt: 85(set_target_link_option)

   Unknown CMake command "set_target_link_option".

The path of this CMakelists is \nrf5_SDK_for_Mesh_v3.2.0_src\mesh\bootloader\CMakelists.txt

Could you please give me the correct file? The current file cannot work

[Mttrinh]

Hi,

Both the functions you are mentioning can be found in CMake/toolchain/gccarmemb.cmake. 

You should try delete the build folder and try building again. Also make sure that you have the correct toolchain installed.

[ZHENGXIANG]

Hi:

Thank you for your response. I think I made a mistake that I only do cmake in the bootloader folder. 

I read the Installing the toolchain again and install Doxygen,Graphviz,Mscgen. This time I do cmake in folder ： nrf5_SDK_for_Mesh_v3.0.0_src and follow the step in  Installing the toolchain and Building the mesh stack and examples. I put the nrf5_SDK_for _Mesh and nRF5_SDK_15.2.0_9412b96 in the same folder. This time I still use the original nRF5_SDK and nrf5_SDK_for _Mesh files to test.

However, I input the command: 

build$ cmake -G Ninja ..

  and then got the result in the following screenshot:

I did not see the warning that the nRF5 SDK is not found and when I use the command 

build$ ninja nRF5_SDK

I got the following response:

ninja: error: unknown  target 'nRF5_SDK'

I thought it may be not important because I had put nRF5_SDK_15.2.0_9412b96 in the correct path and I continued to work. Then I used the command shown in Building the mesh stack and examples and specify the required TOOLCHAIN, PLATFORM, SOFTDEVICE and BOARD name to CMake. I also set the CMAKE_BUILD_TYPE as MinSizeRel.

After that, I input the command:

build$ ninja

then it failed. The only thing I got is the empty folders inside /build/ .

What's wrong with my step? 

[Mttrinh]

It seems correct what you have done. Can you try downloading a fresh copy of the nRF5 SDK and try again?

[ZHENGXIANG]

Thank you for your answer. I have found the mistake. I forgot to change the bootloader_build from OFF to ON in cmakecache.txt. Now I successfully generate the hex file for bootloader.