Problem compiling extensions

Hello.
Im having a problem when trying to compile extensions for ruby.
I has happened with sqlite3-ruby and mysql-ruby.
In mysql-ruby when I try to run the command:
ruby extconf.rb
I get the following results:
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lm... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lz... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lsocket... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lnsl... no
checking for mysql_query() in -lmysqlclient...

After running the command again with the options
--with-mysql-include-dir=/usr/include --with-mysql-lib-dir=/usr/lib

I get the same errors.
After looking at the the mkmf.log file
I saw the following error:
"gcc -o conftest
-I/home/giovanni/downloads/ruby/mysql-ruby-2.5.2-I/usr/lib/ruby/1.8/i686-linux
-I/usr/local/include -O2 -march=i686
-mtune=i686 -fPIC conftest.c -L'/usr/local/lib' -Wl,-R'/usr/local/lib'
-L'/usr/lib' -Wl,-R'/usr/lib' -lruby-static -lmysqlclient -lpthread -ldl
-lcrypt -lm -lc"

cc1: error: invalid option `tune=i686'

What it's causing this error?

My plattaform is Slackware Linux 10.1 on a Athlon XP 1800 processor.

Thanks in advance.

ยทยทยท

--
Giovanni Degani
tiefox@gmail.com
ICQ 965609

cc1: error: invalid option `tune=i686'

What it's causing this error?

My plattaform is Slackware Linux 10.1 on a Athlon XP 1800 processor.

Have you compiled ruby with a different compiler than you're now
using? If so, you might have to hack on rbconfig.rb, or recompile
Ruby.