libmysqlclient_r.so.16: open failed: No such file or directory

Hello,

Sorry if this gets posted twice, but I didn't see it so I am posting
it
again.

I am a fairly new to MySQL, but am trying to create a simple test
program that uses Pthreads with MySQL (this is on Solaris 10).

I started building my test app using the linker line

LIBS = -I/opt/mysql/mysql/include -L/opt/mysql/mysql/lib -lmysqlclient
-lsocket -lnsl -lrt -lpthread

but changed over to

LIBS = -I/opt/mysql/mysql/include -L/opt/mysql/mysql/lib -
lmysqlclient_r -lsocket -lnsl -lrt -lpthread

to try and make my application "thread safe".

When I run, I am getting an error on the console:

ld.so.1: mysql_thread_example: fatal: libmysqlclient_r.so.16: open
failed: No such file or directory
Killed

It is really not even getting into 'main'.

Here is my complete Makefile:

PROGRAM = pthreads.c
OBJS = $(CSRCS:.c=.o)
CSRCS = pthreads.c

CC = gcc
LINKER = gcc
CFLAGS = -Wall -m64 -O3 -mtune=k8 -g
LDFLAGS = -m64
LIBS = -I/opt/mysql/mysql/include -L/opt/mysql/mysql/lib -lpthread -
lmysqlclient_r -lsocket -lnsl -lrt

all: $(PROGRAM)

$(PROGRAM): $(OBJS)
$(LINKER) $(LDFLAGS) $(OBJS) $(LIBS) -o $(PROGRAM)

$(OBJS):

%.o: %.c %.h
$(CC) -c $(CFLAGS) $*.c

clean:
rm -f $(OBJS) $(PROGRAM)


Finally, I tried this with the sample program posted in the MySQL
docs (28.2.16) "How to Make a Threaded Client", and it dies the same
way.

Any help or advice would be greatly appreciated.

Mitch

Is it possible that this is a 64-bit vs. 32-bit issue?

If so, do I need to get a different binary? Recompile?