Ruby

Greetings,

My ruby version is ruby 2.3.3p222 (2016-11-21) [x86_64-linux-gnu]

I had multiple error while trying to install ruby in Kali-linux
"\curl -sSL https://get.rvm.io | bash -s stable --ruby"
also "rvm install ruby-2.4.1" is the same error
i recently used sudo gem cleanup before attempting to install ruby

and here is the log

root@kali:~# \curl -sSL https://get.rvm.io | bash -s stable --ruby Downloading https://github.com/rvm/rvm/archive/1.29.2.tar.gz Downloading https://github.com/rvm/rvm/releases/download/1.29.2/1.29.2.tar.gz.asc gpg: Signature made Thu 22 Jun 2017 06:18:38 PM EET gpg: using RSA key E206C29FBF04FF17 gpg: Good signature from "Michal Papis (RVM signing) <mpapis@gmail.com>" [unknown] gpg: aka "Michal Papis <michal.papis@toptal.com>" [unknown] gpg: aka "[jpeg image of size 5015]" [unknown] gpg: WARNING: This key is not certified with a trusted signature! gpg: There is no indication that the signature belongs to the owner. Primary key fingerprint: 409B 6B17 96C2 7546 2A17 0311 3804 BB82 D39D C0E3 Subkey fingerprint: 62C9 E5F4 DA30 0D94 AC36 166B E206 C29F BF04 FF17 GPG verified '/usr/local/rvm/archives/rvm-1.29.2.tgz' Upgrading the RVM installation in /usr/local/rvm/ Upgrade of RVM in /usr/local/rvm/ is complete. # Administrator, # # Thank you for using RVM! # We sincerely hope that RVM helps to make your life easier and more enjoyable!!! # # ~Wayne, Michal & team. In case of problems: https://rvm.io/help and https://twitter.com/rvm_io Upgrade Notes: * It looks like some old stuff is laying around RVM, you can cleanup with: rvm cleanup all * No new notes to display. Ruby enVironment Manager 1.29.2 (latest) (c) 2009-2017 Michal Papis, Piotr Kuczynski, Wayne E. Seguin ruby-2.4.0 - #removing src/ruby-2.4.0.. Searching for binary rubies, this might take some time. No binary rubies available for: debian/kali-rolling/x86_64/ruby-2.4.0. Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies. Checking requirements for debian. Installing requirements for debian. Updating system.. Installing required packages: libreadline6-dev.. Requirements installation successful. Found user configured '-j' flag in 'rvm_make_flags', please note that RVM can detect number of CPU threads and set the '-j' flag automatically if you do not set it. Installing Ruby from source to: /usr/local/rvm/rubies/ruby-2.4.0, this may take a while depending on your cpu(s)... ruby-2.4.0 - #downloading ruby-2.4.0, this may take a while depending on your connection... ruby-2.4.0 - #extracting ruby-2.4.0 to /usr/local/rvm/src/ruby-2.4.0.... ruby-2.4.0 - #configuring................................................................ Error running './configure --prefix=/usr/local/rvm/rubies/ruby-2.4.0 --disable-install-doc --enable-shared', showing last 15 lines of /usr/local/rvm/log/1504758632_ruby-2.4.0/configure.log Ignoring pcaprub-0.12.4 because its extensions are not built. Try: gem pristine pcaprub --version 0.12.4 Ignoring pg_array_parser-0.0.9 because its extensions are not built. Try: gem pristine pg_array_parser --version 0.0.9 Ignoring psych-2.2.4 because its extensions are not built. Try: gem pristine psych --version 2.2.4 Ignoring rbnacl-libsodium-1.0.13 because its extensions are not built. Try: gem pristine rbnacl-libsodium --version 1.0.13 Ignoring rdiscount-2.2.0.1 because its extensions are not built. Try: gem pristine rdiscount --version 2.2.0.1 Ignoring redcarpet-3.4.0 because its extensions are not built. Try: gem pristine redcarpet --version 3.4.0 Ignoring sqlite3-1.3.13 because its extensions are not built. Try: gem pristine sqlite3 --version 1.3.13 Ignoring yajl-ruby-1.3.0 because its extensions are not built. Try: gem pristine yajl-ruby --version 1.3.0 /usr/local/rvm/gems/ruby-2.4.1/gems/make-0.3.1/bin/make:4:in `<top (required)>': undefined local variable or method `make' for main:Object (NameError)	from /usr/local/rvm/gems/ruby-2.4.1/bin/make:23:in `load'	from /usr/local/rvm/gems/ruby-2.4.1/bin/make:23:in `<main>'	from /usr/local/rvm/gems/ruby-2.4.1/bin/ruby_executable_hooks:15:in `eval'	from /usr/local/rvm/gems/ruby-2.4.1/bin/ruby_executable_hooks:15:in `<main>' no checking for safe null command for make... configure: error: no candidate for safe null command There has been an error while running configure. Halting the installation.