Forum TI-Planet.org

How can I fix it ?

It's pretty clear from the error that you're missing that particular boot lib, so install it with your package manager.
It could be something like sudo apt-get install libboost-program-options-dev

oh, Thank you. I installed "boost-devel" before it by "yum install boost-program-options". So I reboot the computer,and hope it can solve. But it have a new problem .I don't speak English very well, I hope you can understand what I said

I search this problem on previous posts ,and /ndless-sdk/lib didn't empty .

Looks like you're missing some tools (specifically, it should have used "ar" to make the lib, but it does not exist on your install?), I'm not even sure how you managed to be in this state.
What linux distribution are you using, it looks a bit weird. And why are you running as root? This is clearly not recommended.

I have installed the "binutils",i have read the wiki of Ndlss on github .I do it step by step .QwQ
I use centos 7 .
Because I thought i dont have the enough permissions,so i use "root".

I can use "rcs "and"ar" command successful .
By the way I think you are patient. Thank you very much!!

This error message appears if the "arm-none-eabi-ar" binary from the toolchain built is not visible in the $PATH. Verify that the toolchain was fully built and $PATH is configured correctly.

BTW: You do not need to reboot your computer every time you install packages

Oh, thx . I installed it successful. I find my mistakes. I add a wrong PATH !