Installing package nloptr

General
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Issues with nloptr

Problem statement

nloptr has released a new major version (2.x) that has changed OS dependencies. They need a more recent version of both NLopt and cmake. nloptr will check if NLopt is installed and in the right version. If not, it will automatically build NLopt within the R package itself. For that it will need cmake in Version >= 3.15. (more information on github.

Solutions

General Solution

Downgrade nloptr

One of the easiest solutions is to downgrade nloptr to a 1.x version (latest available is 1.2.2.3):

remotes::install_version("nloptr", version = "1.2.2.3")

OS specific solutions (in order to keep using nloptr version 2.0)

Ubuntu 16.04 (beaver) and 18.04 (bionic)

Upgrade cmake using the kitware repo.

Ubuntu 20.04 (focal) +

No action needed.

RHEL/CentOS 7

Install cmake3 from the EPEL repository, remove cmake if it is installed and finally create symbolic link ln -s /usr/bin/cmake3 /usr/bin/cmake.

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