valac: Require --header when using --use-header

diff --git a/compiler/valacompiler.vala b/compiler/valacompiler.vala
index 11c35fce342c8ded5cf2aa8724d232e0dfdfa352..3f37fbd6caa941f1721ba0e6df898899733af0e7 100644 (file)
--- a/compiler/valacompiler.vala
+++ b/compiler/valacompiler.vala
@@ -213,6 +213,9 @@ class Vala.Compiler {
                context.ccode_only = ccode_only;
                context.compile_only = compile_only;
                context.header_filename = header_filename;
+               if (header_filename == null && use_header) {
+                       Report.error (null, "--use-header may only be used in combination with --header");
+               }
                context.use_header = use_header;
                context.internal_header_filename = internal_header_filename;
                context.includedir = includedir;