specify --with-openssl-dir in php ./configure

I'm not sure if this is correct, please revert if it doesn't fix the issue

src/SPC/builder/extension/openssl.php

@@ -22,4 +22,9 @@ class openssl extends Extension
 
         return false;
     }
+
+    public function getUnixConfigureArg(): string
+    {
+        return '--with-openssl=' . BUILD_ROOT_PATH . ' --with-openssl-dir=' . BUILD_ROOT_PATH;
+    }
 }