From: Eric Sunshine <sunshine@...>
Date: 2003-12-02T20:42:30+09:00
Subject: Re: Embedding Ruby in C

On Tue, 2 Dec 2003 14:42:26 +0900, Zach Dennis wrote:
> Thanks for the reply Eric. I checked the defines.h file and it has the line
> in it that you suggested. I tried to manually add them to my .c file, but
> still no go. Here is what I have tried from the command line:
> cl out.c
> cl out.c -IC:\source\ruby-1.8.1
> cl out.c -IC:\source\ruby-1.8.1 /link /INCLUDE:C:\ruby\bin
> cl out.c -IC:\source\ruby-1.8.1 /link /INCLUDE:C:\ruby\lib
> cl out.c -IC:\source\ruby-1.8.1 /link /INCLUDE:C:\source\ruby-1.8.1
> Each one of the above is giving me the exact same error as before. I've
> tried on Windows 2000 and WinXP.

It does not appear that you are linking with the Ruby library.  You need to  
link against the library in order for those symbols to be resolved.  You  
should read the Microsoft documentation to find out how to specify the  
library on the command-line.  (Based upon my reading, I got the impression  
that you can simply specify the library at the end of the command-line after  
the other options following /link.  You may also need to specify /libpath in  
order to let the linker know where the library is.)

Depending upon which version and which binary distribution of Ruby you are  
using, the library might be named something like mswin32-ruby18.lib.  If you  
are using the source code distribution of Ruby then make sure that you have  
actually built the project so that the .lib file exists.

At run-time, you may also need to place the Ruby .dll in the same directory  
as your .exe file, or make sure that your PATH environment variable mentions  
the directory containing the Ruby .dll.

-- ES