How does PHP compile MYSQLND extensions separately?

Recent toss php, download php 7.0.8

Only PHP-FPM is turned on at compile time

./configure --prefix=/usr/lcoal/php --enable-fpm

I want to add various extensions through Phpize, but I'm having problems with MySQL support.
Phpize was executed under the EXT/MYSQLND directory, after configure was generated
At the time of the./configure, you first get a hint that you cannot find a header file for OpenSSL:

configure: error: Cannot find OpenSSL's 
  
   

Manually modified the variables in the Configure script:

OPENSSL_INCDIR=/usrOPENSSL_LIBDIR=/usr/lib64

Final compilation succeeded, added in php.ini

extension=mysqlnd.so

Or

zend_extension=mysqlnd.so

Are not loaded

Ask, Mysqlnd and FPM can only compile PHP for the first time to add in the Configure?

Reply content:

Recent toss php, download php 7.0.8

Only PHP-FPM is turned on at compile time

./configure --prefix=/usr/lcoal/php --enable-fpm

I want to add various extensions through Phpize, but I'm having problems with MySQL support.
Phpize was executed under the EXT/MYSQLND directory, after configure was generated
At the time of the./configure, you first get a hint that you cannot find a header file for OpenSSL:

configure: error: Cannot find OpenSSL's 
  
   

Manually modified the variables in the Configure script:

OPENSSL_INCDIR=/usrOPENSSL_LIBDIR=/usr/lib64

Final compilation succeeded, added in php.ini

extension=mysqlnd.so

Or

zend_extension=mysqlnd.so

Are not loaded

Ask, Mysqlnd and FPM can only compile PHP for the first time to add in the Configure?

1. OpenSSL cannot find that PHP itself does not have SSL extensions that need to be installed before SSL extensions

2. No need to modify the Configure file

3. Theoretically, all extensions can be dynamically compiled later or added

Can be expanded at a later stage, do not make the install Operation just fine

It feels like you're going to install the OpenSSL extension, and then follow some of the helper methods provided in the Configure Help to compile the OpenSSL installation method
Then you can install MYSQLND extensions like that

Both extensions have a premise that you want to install the SSL extension first to install OpenSSL, you want to install the MYSQLND extension first to install MySQL

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