From: Patrick May <patrick@...>
Date: 2004-09-04T08:50:32+09:00
Subject: Re: [BUG] mod_ruby

Hello,

On Tuesday, August 31, 2004, at 12:10  AM, Patrick May wrote:

> Hello,
>
> I've been trying to get mod ruby to run:
>
>   ruby 1.8.0 (2003-08-04) [powerpc-darwin]
>   httpd-2.0.50
>   mod_ruby-1.2.2
>
> When I compile mod_ruby and launch apache, apache is unresponsive and 
> I see these messages in the error logs:
>
>   dyld: /Users/patsplat/programming/narf-servers/bin/httpd Undefined 
> symbols:
>   _dlclose
>   [Tue Aug 31 00:04:19 2004] [notice] child pid 26145 exit signal 
> Trace/BPT trap (5)
>
> I did get this warning on my compile:
>
>   [laputa:narf-servers/dist/mod_ruby-1.2.2] patsplat% make
>   gcc -g -O2 -pipe -fno-common -Wall  -I. 
> -I/usr/local/lib/ruby/1.8/powerpc-darwin
>     -I/Users/patsplat/programming/narf-servers/include   -c mod_ruby.c
>   mod_ruby.c: In function `dso_unload':
>   mod_ruby.c:686: warning: implicit declaration of function `dlclose'
>
> Has anyone else experienced this?

I solved this problem, and wanted to share the fix.  I found a note on 
the net saying that error messages like "dyld: ... Undefined symbols:" 
meant that one had incompatible libraries.  I checked out the make file 
and found a suspicious line:

     APACHE_INCLUDES = -I/usr/include/httpd

I corrected this to:

     APACHE_INCLUDES = -I/Users/patsplat/programming/narf-servers/include

I double checked the output of configure.rb:

     % ruby configure.rb 
--with-apxs=/Users/patsplat/narf-servers/bin/apxs

And it does generate the correct the Makefile!  Not sure how I did 
this, but for those who ever have a similar error:

   * make sure you ran the configure correctly, and
   * check that your Makefile has the right include directories

Cheers,

Patrick