unable to install on centos with ruby 2.0.0 with rvm

[rookie7799]

gem install mysqlplus-0.1.0.gem -- --with-mysql-config=/usr/lib64/mysql/mysql_config

Building native extensions with: '--with-mysql-config=/usr/lib64/mysql/mysql_config'
This could take a while...
ERROR: Error installing mysqlplus-0.1.0.gem:
ERROR: Failed to build gem native extension.

/usr/local/rvm/rubies/ruby-2.0.0-p0/bin/ruby extconf.rb --with-mysql-config=/usr/lib64/mysql/mysql_config

checking for mysql_ssl_set()... yes
checking for rb_str_set_len()... yes
checking for mysql.h... yes
extconf.rb:39:in <main>': Use RbConfig instead of obsolete and deprecated Config. extconf.rb:39:in

': Use RbConfig instead of obsolete and deprecated Config.
creating Makefile

make
compiling mysql.c
mysql.c: In function âsocketâ:
mysql.c:756: warning: implicit declaration of function âvio_fdâ
mysql.c: In function âprocess_all_hashesâ:
mysql.c:1075: warning: ISO C90 forbids mixed declarations and code
mysql.c:1083: warning: ISO C90 forbids mixed declarations and code
mysql.c: In function âall_hashesâ:
mysql.c:1286: warning: unused variable âiâ
mysql.c:1286: warning: unused variable ânâ
mysql.c:1285: warning: unused variable âresâ
mysql.c:1284: warning: unused variable âfield_namesâ
mysql.c: In function âstmt_executeâ:
mysql.c:1524: error: âstruct RArrayâ has no member named âptrâ
mysql.c:1525: error: âstruct RArrayâ has no member named âptrâ
mysql.c:1526: error: âstruct RArrayâ has no member named âptrâ
mysql.c:1527: error: âstruct RArrayâ has no member named âptrâ
mysql.c:1528: error: âstruct RArrayâ has no member named âptrâ
mysql.c:1529: error: âstruct RArrayâ has no member named âptrâ
make: *** [mysql.o] Error 1