Description:
------------
Warning: Solr was not enabled; OpenSSL libraries not found.
---------------------
- Version: Solr 2.4.0

- Module compiled with:
  + OpenSSL 1.1

- PHP SDK Binary Tool (version 2.1.5)
https://github.com/Microsoft/php-sdk-binary-tools/releases/tag/php-sdk-2.1.5

---------------------
- Investigating:

in config.w32:

if(!CHECK_LIB('ssleay32.lib', 'solr', PHP_SOLR) 
  || !CHECK_LIB('libeay32.lib', 'solr', PHP_SOLR)) {
	WARNING('solr was not enabled; openssl libraries not found');
	PHP_SOLR = "no";
}

OpenSSL 1.1 changed name of the libraries (compare to OpenSSL 1.0):
 + ssleay32.lib => libssl.lib
 + libeay32.lib => libcrypto.lib

=> Solr cannot find out libraries of OpenSSL
=> Warning occurs and Solr was not enabled


Test script:
---------------
Steps to build:

1. Setup the build directory

Reference:
https://wiki.php.net/internals/windows/stepbystepbuild_sdk_2

2. Compile

cd c:\php-sdk\
c:\php-sdk\phpsdk-vc15-x64.bat
cd C:\php-sdk\phpdev\vc15\x64\php-7.2.15
buildconf
configure --enable-solr --with-openssl

Expected result:
----------------
+ No warning.
+ Solr is enabled.

Actual result:
--------------
- WARNING: solr was not enabled; openssl libraries not found
- Solr is not enabled.