From: "Ara.T.Howard" <ara.t.howard@...>
Date: 2005-11-11T23:12:14+09:00
Subject: Re: sqlite3-ruby: Unable to find libsqlite3.so at runtime

On Fri, 11 Nov 2005, Lars Olsson wrote:

> Hi, I've custom-built both Ruby and SQLite on a shared Debian box but
> I'm having some problems getting sqlite3-ruby to work correctly. It
> seems to install OK, but the lib seems unable to find libsqlite3.so at
> runtime.
>
> Some details on my setup:
>
> "Normal" Ruby (setup by my ISP, I don't use it) lives in /usr
> (/usr/bin, /usr/lib etc.)
>
> My custom-built Ruby lives in /home/username/custom
> (/home/username/custom/bin, /home/username/custom/lib etc.)
>
> My custom-built SQLite lives in /home/username/custom
> (/home/username/custom/bin, /home/username/custom/lib etc.)
>
> When I install sqlite3-ruby as a gem I have specified the location of
> the sqlite3 headers and libs
> gem install sqlite3-ruby --remote --
> --with-sqlite3-include=/home/username/custom/include
> --with-sqlite3-lib=/home/username/custom/include
> The gem seems to find everything it needs to install.
>
> At runtime, sqlite3-ruby cannot find libsqlite3.so unless I explicitly
> set the LD_LIBRARY_PATH environment variable to point at
> /home/username/custom/lib.
>
> Is it possible to let sqlite3-ruby know where to find libsqlite3.so
> without using LD_LIBRARY_PATH? Is it possible to set it
> when compiling Ruby or installing the gem?
>
>
> Any suggestions help be most appreciated.

all you need to do is

   export LD_RUN_PATH=/home/username/custom/lib

__before__ compiling and you'll not need to use LD_LIBRARY_PATH.

in general, if installing into a non-standard place like that, follow these
instructions for __everything__ that you compile

   export LD_RUN_PATH=/home/username/custom/lib:$LD_RUN_PATH
   export LD_LIBRARY_PATH=/home/username/custom/lib:$LD_LIBRARY_PATH
   ./configure --prefix=/home/username/custom && make && make install

anyone who does this for ruby, extensions, and other libraries will by
suprised to find that everything just works - no matter what platform you are
on or what package manager might exist.

regards.

-a
-- 
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| ara [dot] t [dot] howard [at] gmail [dot] com
| all happiness comes from the desire for others to be happy.  all misery
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