Function in C API needs proper declaration #477

[Nakul Vaidya]

I tried to compile nmatrix/ext/nmatrix/nmatrix.cpp
I got this error:
nmatrix.cpp:34:18: fatal error: ruby.h: No such file or directory
#include <ruby.h>
^
compilation terminated.

I tried running these commands :
$ sudo apt-get install ruby-dev
$ sudo apt-get install ruby2.3-dev
$ gem install rerun
$ gem install ruby
gcc is already installed

I am working on ubuntu 16.10
output for: ruby -v
ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-linux]

please help.

[John Woods]

What result did you get when you tried the things I suggested?

--
You received this message because you are subscribed to the Google Groups "SciRuby Development" group.
To unsubscribe from this group and stop receiving emails from it, send an email to sciruby-dev...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[Nakul Vaidya]

Yes I tried installing ruby with rbenv but still there is no change in error.

I followed this tutorial :
https://www.digitalocean.com/community/tutorials/how-to-install-ruby-on-rails-with-rbenv-on-ubuntu-16-04

[John Woods]

What else have you tried? Have other people had the same error? I can google it for you, but I can't try the solutions I find since I don't have access to your machine.

[Nakul Vaidya]

Initially  i tried this links:

http://stackoverflow.com/questions/17244948/simple-ruby-c-extension-cannot-find-ruby-h

http://stackoverflow.com/questions/20559255/error-while-installing-json-gem-mkmf-rb-cant-find-header-files-for-ruby

https://github.com/postmodern/chruby/issues/349

[John Woods]

Can you provide your exact steps to reproduce with rbenv? I'll run it in a VM on Monday if I can.