use OPENSSL_CONF directory for openssl default configuration

Author: henderkes

src/SPC/builder/linux/library/openssl.php

@@ -51,14 +51,16 @@ public function build(): void
             $zlib_extra = '';
         }
 
+        $openssl_conf = getenv('OPENSSL_CONF');
+        $openssl_dir = $openssl_conf ? dirname($openssl_conf) : '/etc/ssl';
         $ex_lib = trim($ex_lib);
 
         shell()->cd($this->source_dir)->initializeEnv($this)
             ->exec(
                 "{$env} ./Configure no-shared {$extra} " .
                 '--prefix=' . BUILD_ROOT_PATH . ' ' .
                 '--libdir=' . BUILD_LIB_PATH . ' ' .
-                '--openssldir=/etc/ssl ' .
+                "--openssldir={$openssl_dir} " .
                 "{$zlib_extra}" .
                 'enable-pie ' .
                 'no-legacy ' .