You need to install the MySQL development files.

#sudo apt-get install mysql-devel
or
#sudo yum install mysql-devel

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What if i want to use Percona or MariaDB?

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What if i want to use Percona or MariaDB?

Will work. Just make sure to client libs are in place.

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configure: error: Invalid MySQL directory - unable to find mysql.h under /usr/include/mariadb/mysql.h

ls -l /usr/include/mariadb/mysql.h

-rw-r--r-- 1 root root 41230 ноя 5 22:40 /usr/include/mariadb/mysql.h

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If it is standard MySQL location as it looks like it should work with
./configure --with-mysql

otherwise you need to point to top of the location:
./configure --with-mysql=/usr

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Now I get it. May I suggest to change

  --with-mysql=DIR      Include MySQL support.  DIR is the MySQL base
                          install directory, default is to search through
                          a number of common places for the MySQL files.

to

  --with-mysql[=DIR]      Include MySQL support.  DIR is the MySQL installation prefix (e.g. `/usr`),
                          omitting DIR triggers a search through
                          a number of common places for the MySQL files.

because "base install directory" is hard to get, especially with the error message referring to mysql.h when configure wants include/mysql/mysql.h. Definitely useful to add an example no matter how DIR is called.

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