Error compiling with Ruby 2.0 about ruby-unf_ext

[caseyhelbling]

I take that back... once I added g++ in my vbox I was good to go.

sudo apt-get install build-essential g++

[postmodern]

This might be a compiler/extconf issue. I can successfully compile it on ruby 2.0.0-p0, with gcc 4.7.2 on Fedora 17 x86-64.

[contentfree]

@knu: You have a prebuilt extension for x86 for 1.8 and 1.9. Can you cross-compile and publish a new version of the gem for Ruby 2.0/2.1?

[caseyhelbling]

Yes same error on 2.1.2 --

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

    /home/vagrant/.rbenv/versions/2.1.2/bin/ruby extconf.rb 
checking for main() in -lstdc++... no
checking for ruby/encoding.h... yes
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling unf.cc
make: g++: Command not found
make: *** [unf.o] Error 127

make failed, exit code 2

Gem files will remain installed in /home/vagrant/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0   /gems/unf_ext-0.0.6 for inspection.
Results logged to /home/vagrant/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/extensions/x86_64-linux/2.1.0-static/unf_ext-0.0.6/gem_make.out
An error occurred while installing unf_ext (0.0.6), and Bundler cannot continue.
Make sure that `gem install unf_ext -v '0.0.6'` succeeds before bundling.

[knu]

@contentfree The latest version of the gem has binary gems for Windows 64bit/32bit, up to Ruby 2.2.

[knu]

Does this still reproduce? I'm closing this since I haven't been able to reproduce this. Please refile an issue if you still have the problem, thanks!

[soundasleep]

For 0.0.7.4, sudo apt-get install build-essential g++ solved the issue on Ubuntu 16.04.

[eugeniomiro]

on openSUSE (tested on Leap 15.1)

$ sudo zypper install -t pattern devel_C_C++