Mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

Community Edition
1

My dradis installation on Kali Linux Rolling release fails:

~/dradis-ce# bundle install
Don’t run Bundler as root. Bundler can ask for sudo if it is needed, and installing your bundle as root will break this application for all non-root users on this
machine.
Fetching gem metadata from https://rubygems.org/…
Fetching additional metadata from https://rubygems.org/…
Resolving dependencies…
Using rake 12.0.0

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

/usr/bin/ruby2.1 extconf.rb

mkmf.rb can’t find header files for ruby at /usr/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in /var/lib/gems/2.1.0/gems/RedCloth-4.3.1 for inspection.
Results logged to /var/lib/gems/2.1.0/extensions/x86-linux/2.1.0/RedCloth-4.3.1/gem_make.out
An error occurred while installing RedCloth (4.3.1), and Bundler cannot continue.
Make sure that gem install RedCloth -v '4.3.1' succeeds before bundling.

dpkg -l | grep ruby | grep dev shows me:

ii ruby-dev:i386 1:2.3.3 i386 Header files for compiling extension modules for Ruby (default version)
ii ruby1.8-dev 1.8.7.358-7 i386 Header files for compiling extension modules for the Ruby 1.8
ii ruby2.3-dev:i386 2.3.3-1 i386 Header files for compiling extension modules for the Ruby 2.3

Obviously. current versions of ruby do not install a ruby.h file in /usr/lib/ruby/include/. Has anyone got Dradis running on Kali Linux? If so, how?

2

Hi @danielm, I’m Rachael with the Dradis support team. Yes, we’ve got many users running Dradis on Kali Linux (myself included!). Let’s get this sorted out. First, I want to confirm a few details. Did you install using the instructions in our guide here?

If you were using other instructions, let’s start with the guide above before moving on.

Otherwise, the latest version of dradis-ce is actually running Ruby v2.2 which isn’t listed in your output. Does apt-get install ruby2.2-dev resolve the error?

3

Hi @rachkor
I followed the guide you mentioned.

Furthermore, apt-get update + apt-get install ruby2.2-dev says:
E: Unable to locate package ruby2.2-dev
E: Couldn’t find any package by glob ‘ruby2.2-dev’
E: Couldn’t find any package by regex ‘ruby2.2-dev’

It is strange. apt-cache search libruby tells me that only version 2.1 and 2.3 are available.

4

Solution:
apt-get remove ruby2.1
apt-get update
apt-get --reinstall install ruby2.1 (fails → to old)

gem install bundler
→ reinstalled the bundler. Afterwards, it found ruby2.3.