[#CONC-498] mysql.h missing #include "mysql

comparison of mysql_version.h includes
$ grep -r 'mysql_version\.h' /usr/local/m*/include/
/usr/local/mariadb-10.5.6/include/mysql/server/mysql.h:#include "mysql_version.h"
/usr/local/mariadb-10.5.6/include/mysql/server/private/unireg.h:#include <mysql_version.h> /* FRM_VER */
/usr/local/mariadb-10.5.6/include/mysql/server/private/sql_const.h:#include <mysql_version.h>
/usr/local/mysql-5.6.49-linux-glibc2.12-x86_64/include/mysql.h:#include "mysql_version.h"
/usr/local/mysql-5.7.31-linux-glibc2.12-x86_64/include/mysql/plugin.h:#include "mysql_version.h" /* MYSQL_VERSION_ID */
/usr/local/mysql-5.7.31-linux-glibc2.12-x86_64/include/mysql.h:#include "mysql_version.h"
/usr/local/mysql-5.7.31-linux-glibc2.12-x86_64/include/plugin.h:#include "mysql_version.h" /* MYSQL_VERSION_ID */
/usr/local/mysql-8.0.21-linux-glibc2.12-x86_64/include/mysql.h:#include "mysql_version.h" // IWYU pragma: keep

Without it defines ike MYSQL_UNIX_ADDR aren't exposed tot he client as per the php-7.3 compile error:

php-7.3 version=mariadb-10.5.6; ../php-src/configure --enable-debug --with-mysqli=/usr/local/$version/bin/mysql_config --with-pdo-mysql=/usr/local/$version

/home/dan/repos/php-src/ext/mysqli/mysqli.c: In function ‘zm_info_mysqli’:
/home/dan/repos/php-src/ext/mysqli/mysqli.c:972:47: error: ‘MYSQL_UNIX_ADDR’ undeclared (first use in this function); did you mean ‘PDO_MYSQL_UNIX_ADDR’?
972 \| php_info_print_table_row(2, "MYSQLI_SOCKET", MYSQL_UNIX_ADDR);
\| ^~~~~~~~~~~~~~~
\| PDO_MYSQL_UNIX_ADDR
/home/dan/repos/php-src/ext/mysqli/mysqli.c:972:47: note: each undeclared identifier is reported only once for each function it appears in

[CONC-498] mysql.h missing #include "mysql_version.h" Created: 2020-09-12 Updated: 2020-09-14 Resolved: 2020-09-14
Status:	Closed
Project:	MariaDB Connector/C
Component/s:	None
Affects Version/s:	3.1.9
Fix Version/s:	3.1.10