Wm Terry writes:
> I seem to have a problem similar to others, but none of the suggested
> solutions seem to solve it. It's the standard "undefined reference to
> `compress'" while using MySQL++. What am I missing. Many solutions
> appear to address libmysqlclient. So I'm not sure if the problem is
> MySQL or MySQL++ oriented (though MySQL is working fine and the MySQL++
> examples make fine).
>
>
> $ make metamgrd
> gcc -c -g -I/usr/local/mysql metamgrd.C
> gcc -static metamgrd.o sock.o cfgfile.o cfgitem.o err.o -o ./metamgrd
> -lstdc++ -L/usr/lib/mysql -lz -lmysqlclient -lsqlplus
> /usr/lib/mysql/libmysqlclient.a(my_compress.o): In function
> `my_uncompress':
> my_compress.o(.text+0x97): undefined reference to `uncompress'
> /usr/lib/mysql/libmysqlclient.a(my_compress.o): In function
> `my_compress_alloc':
> my_compress.o(.text+0x126): undefined reference to `compress'
> collect2: ld returned 1 exit status
> make: *** [metamgrd] Error 1
>
>
> I've remade a MySQL++ example for grins and it works fine.
>
> # make simple1
> c++ -DHAVE_CONFIG_H -I. -I. -I.. -I../sqlplusint -I../sqlplusint
> -I/usr/local/mysql/include/mysql -g -O2 -c simple1.cc
> /bin/sh ../libtool --mode=link c++ -g -O2 -L/usr/local/mysql/lib/mysql
> -o simple1 simple1.o ../sqlplusint/libsqlplus.la -lz -lmysqlclient
> c++ -g -O2 -L/usr/local/mysql/lib/mysql -o .libs/simple1 simple1.o
> ../sqlplusint/.libs/libsqlplus.so -lz -lmysqlclient -lz -lmysqlclient
> -Wl,--rpath -Wl,/usr/local/lib
> creating simple1
>
> Running simple1 causes a core dump, but I'm guessing that has to do with
> not having the appropriate db and dbaccess (didn't modify the code). I
> figured I'd start by using modified parts of the examples in my own app
> and that that would be just as good a test (if I can make it).
>
>
> I have checked and config.h for MySQL does have HAVE_COMPRESS defined.
> I've rebuilt MySQL and MySQL++ from scratch (started with the MySQL RPM
> install when I build the system - first time I've used development stuff
> from an RPM, so I decided to start from scratch just to make sure).
>
>
> gcc version 2.96 20000731 (Red Hat Linux 7.0)
> Linux 2.2.16-22smp #1 SMP Tue Aug 22 16:39:21 EDT 2000 i686 unknown
>
>
> Help would be greatly appreciated.
>
>
> Thanks, William
>
Hi!
First, regarding core dump, please rebuild MySQL++ with this
connection.cc :
Second, downgrade to 2.95.2 as 2.96 is very buggy when it comes to
C++.
Third, compress and uncompress are defined in zlib library.
The above is a bug in your linker. Try including static zlib in a link
args.
Regards,
Sinisa
____ __ _____ _____ ___ == MySQL AB
/*/\*\/\*\ /*/ \*\ /*/ \*\ |*| Sinisa Milivojevic
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