Initial project import

tools/v/vlib/db/mysql/mysql_compat.h

@@ -0,0 +1,12 @@
+// MYSQL_OPT_SSL_MODE was added in MySQL 5.7. MariaDB's server and connector
+// headers expose their own TLS options instead, so the generated C code would
+// fail to compile when it references the MySQL-only enum value. Because enum
+// values are not preprocessor macros, `#ifndef MYSQL_OPT_SSL_MODE` alone
+// cannot distinguish a MySQL header that has the enum from a MariaDB header
+// that does not. Gate on MariaDB's published macros and supply a sentinel that
+// mysql_options() will reject at runtime if Config.ssl_mode is used there.
+#if !defined(MYSQL_OPT_SSL_MODE) && \
+	(defined(MARIADB_BASE_VERSION) || defined(MARIADB_VERSION_ID) || \
+		defined(MARIADB_PACKAGE_VERSION_ID) || defined(LIBMARIADB))
+#define MYSQL_OPT_SSL_MODE 9999
+#endif