问题
When i try to install a R package nlopt-2.4.2.tar.gz from http://ab-initio.mit.edu/nlopt/nlopt-2.4.2.tar.gz , using sudo R CMD INSTALL nlopt-2.4.2.tar.gz,
I get the following Error :
Error in untar2(tarfile, files, list, exdir, restore_times) :
unsupported entry type ‘’
回答1:
It's not an R package!
If you perform the tar, zip dance:
tar xvfz nlopt-2.4.2.tar.gz
and look at the README, you get:
NLopt is a library for nonlinear local and global optimization, for functions with and without gradient information. It is designed as as simple, unified interface and packaging of several free/open-source nonlinear optimization libraries.
The latest release and a complete manual may be found at the NLopt home page: http://ab-initio.mit.edu/nlopt
It is compiled and installed with the standard GNU autoconf/automake commands:
./configure make make install-- snip --
来源：https://stackoverflow.com/questions/36303688/error-while-installing-a-tar-gz-package-in-r