$ phpize
[..]
$ ./configure --with-mysql=shared,/usr
[..]
$ make
[..]
/bin/sh /usr/src/php4-4.3.10/ext/mysql/libtool --mode=compile gcc -I. -I/usr/src/php4-4.3.10/ext/mysql -DPHP_ATOM_INC -I/usr/src/php4-4.3.10/ext/mysql/include -I/usr/src/php4-4.3.10/ext/mysql/main -I/usr/src/php4-4.3.10/ext/mysql -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/include/mysql -DHAVE_CONFIG_H -g -O2 -c /usr/src/php4-4.3.10/ext/mysql/php_mysql.c -o php_mysql.lo
gcc -I. -I/usr/src/php4-4.3.10/ext/mysql -DPHP_ATOM_INC -I/usr/src/php4-4.3.10/ext/mysql/include -I/usr/src/php4-4.3.10/ext/mysql/main -I/usr/src/php4-4.3.10/ext/mysql -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/include/mysql -DHAVE_CONFIG_H -g -O2 -c /usr/src/php4-4.3.10/ext/mysql/php_mysql.c -fPIC -DPIC -o php_mysql.lo
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:344: error: `OnUpdateInt' undeclared here (not in a function)
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:344: error: initializer element is not constant
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:344: error: (near initialization for `ini_entries[0].on_modify')
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:344: error: initializer element is not constant
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:344: error: (near initialization for `ini_entries[0]')
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:345: error: `OnUpdateInt' undeclared here (not in a function)
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:345: error: initializer element is not constant
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:345: error: (near initialization for `ini_entries[1].on_modify')
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:345: error: initializer element is not constant
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:345: error: (near initialization for `ini_entries[1]')
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:346: error: `OnUpdateInt' undeclared here (not in a function)
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:346: error: initializer element is not constant
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:346: error: (near initialization for `ini_entries[2].on_modify')
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:346: error: initializer element is not constant
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:346: error: (near initialization for `ini_entries[2]')
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:347: error: initializer element is not constant
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:347: error: (near initialization for `ini_entries[3]')
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:348: error: initializer element is not constant
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:348: error: (near initialization for `ini_entries[4]')
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:349: error: initializer element is not constant
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:349: error: (near initialization for `ini_entries[5]')
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:350: error: initializer element is not constant
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:350: error: (near initialization for `ini_entries[6]')
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:351: error: initializer element is not constant
/usr/src/php4-4.3.10/ext/mysql/php_mysql.c:351: error: (near initialization for `ini_entries[7]')
[..]