Myujth

Building native extensions. This could take a while...
ERROR: Error installing do_mysql:
 ERROR: Failed to build gem native extension.

 current directory: /var/lib/gems/2.5.0/gems/do_mysql-0.10.17/ext/do_mysql
/usr/bin/ruby2.5 -r ./siteconf20181228-4132-w825mn.rb extconf.rb
checking for mysql_query() in -lmysqlclient... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.

Provided configuration options:
 --with-opt-dir
 --without-opt-dir
 --with-opt-include
 --without-opt-include=$opt-dir/include
 --with-opt-lib
 --without-opt-lib=$opt-dir/lib
 --with-make-prog
 --without-make-prog
 --srcdir=.
 --curdir
 --ruby=/usr/bin/$(RUBY_BASE_NAME)2.5
 --with-mysql-config
 --without-mysql-config
 --with-mysql-dir
 --without-mysql-dir
 --with-mysql-include
 --without-mysql-include=$mysql-dir/include
 --with-mysql-lib
 --without-mysql-lib=$mysql-dir/lib
 --with-mysqlclientlib
 --without-mysqlclientlib

To see why this extension failed to compile, please check the mkmf.log which can be found here:

 /var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/do_mysql-0.10.17/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /var/lib/gems/2.5.0/gems/do_mysql-0.10.17 for inspection.
Results logged to /var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/do_mysql-0.10.17/gem_make.out

I have no idea why, but assume that the error could be from the path or directory or maybe libraries.

Does anyone have any idea what's wrong?