[Tioga-users] tutorial on extending ruby in c

[Bill Paxton]

On Jun 3, 2006, at 1:29 PM, Edwin wrote:

>  This will also finally teach me how to extend ruby programs in c.  
> If anyone has a good tutorial on that please let me know.

Hi Edwin,

A while back I put together a small example in response to another  
Tioga user.  You might want to give this a try.



1) create a new folder and place the 4 files in it (no other c files  
please!)

2) do
	ruby extconf.rb
	make
	make install

The 'ruby extconf.rb' should create a Makefile in the folder.
The 'make' should compile spa.c and then create a dynamic lib.
The 'make install' should put the dynamic lib into your Ruby release  
(this may need superuser status of course).

3) check it by
	ruby myspa_test.rb

This should produce terminal output like this:

Loaded suite myspa_test
Started
s.calc * 0.5e-9 is 3.141591
.
Finished in 0.000506 seconds.

1 tests, 4 assertions, 0 failures, 0 errors


If that works, you are off and running!  If not, let me know where  
things go bad.


Cheers,
Bill


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