v.gen.native: skip warning for darwin flag in time_nix.c.v:6, when compiling on linux (reduce noise)

Author: spytheman

vlib/v/gen/native/stmt.c.v

@@ -411,6 +411,10 @@ fn (mut g Gen) gen_flag_hash_stmt(node ast.HashStmt) {
 	} else if node.main.contains('-L') {
 		g.linker_include_paths << node.main.all_after('-L').trim_space()
 	} else if node.main.contains('-D') || node.main.contains('-I') {
+		if g.pref.os == .linux && node.main.starts_with('darwin ') {
+			// TODO: skip all mismatching flags. Extract the logic from cgen in a common method on HashStmt, and call it both here and in cgen.
+			return
+		}
 		// g.v_error('`-D` and `-I` flags are not supported with the native backend', node.pos)
 		println(util.formatted_error('warn', '`-D` and `-I` flags are not supported with the native backend',
 			g.current_file.path, node.pos))