无法在R中安装和加载“ mlrMBO”软件包

Question

So when I install the package, R returns the following error message:

xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
ERROR: compilation failed for package ‘mlrMBO’

But It then says the package has non-zero exit status and is in

‘/private/var/folders/b_/xwf1w6cn769_2gq06fntysxm0000gn/T/RtmpCGAr62/downloaded_packages’

When I load the package library(mlrMBO) It says the package doesn't exist.

I've tried many different methods like using this code

install.packages('mlr', repo='http://cran.fiocruz.br/')

Answer 1

Here's a couple of things you could try:

• Make sure you don't have any Umlauts (ö,ä,ü, å) in your path, ie your User-folder, if you're running on windows.

• Install devtools install.package("devtools)

• clear data in \\AppData\\Local\\Temp\\

Answer 2

That package requires compiling C code, for which you have to install the Xcode developer tools.

Per Housemd's answer at Apple.SE :

Open Terminal, and run the following:

 xcode-select --install 

This will download and install xcode developer tools and fix the problem. The problem is that one needs to explicitly agree to the license agreement.

I found the solution in this question, Command Line Tools not working.

Once you've done that, run install.packages again.