Okay, I know this is going to sound really basic, but I'm only just starting
to teach myself C++ and, typically for me, I've decided to do it the hard way
by jumping in the deep end with mysql++ - I'm not a programmer per se, but
willing to learn.

I tried this some months back with mysql++ 1.7.9 and got it working in so far
as I could do a basic query on a database. Got interrupted, just got back to
it after an upgrade to Suse 9.1 and had to re-install mysql++, so now working
with 1.7.30. Of course, my simple program no longer works.

My source code (sqltest2.cpp) compiles without complaint with the command:

g++ -I/usr/local/include/mysql++ -I/usr/include/mysql -lmysqlpp -lmysqlclient
-o sqltest sqltest2.cpp

But when I run it, I get:
error while loading shared libraries: libmysqlpp.so.4: cannot open shared
object file: No such file or directory

libmysqlpp.so.4 and the file it points to, libmysqlpp.so.4.0.0, are
in /usr/local/lib which is in my path.

FWIW, I installed mysql++ with ./configure
--includedir=/usr/local/include/mysql++. I
added /usr/include, /usr/include/mysql, /usr/local/include, /usr/local/include/mysql++, /usr/lib/mysql
and /usr/local/lib to my path (although the compilation fails if I don't also
include the -I switches in the command above).

I don't intend to bother people here with 'please teach me C++' questions, but
I'd at least appreciate some help with getting up and running so that I can
continue to teach myself. So any advice would be appreciated.

--
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Steve

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Steve Mansfield wrote:
The -I switch (and the corresponding -L switch) only tell the compiler
where the includes and the libraries are. To find the run-time libraries
you have to do one of two things.

1) Set your LD_LIBRARY_PATH to include /usr/local/lib -- that way the
shell knows to look there for libraries for your executable. Be sure to
export the variable if using a sh equivalent.

2) Find you global settings and add it there. It varies from system to
system, but Redhat at least puts these in /etc/ld.so.conf and after you
edit the file you need to run ldconfig to rewrite the cache file.

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-------------------
On Saturday 05 March 2005 19:03, Earl Miles wrote:
Thanks for that. Turns out that /usr/local/lib was already in /etc/ld.so.conf
but I needed to run ldconfig. Okay, now I promise not to bother people until
I've got a proper mysql++ problem! Cheers.

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Steve

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