compilation database: Do not give-up if prototype generation fails

Author: cmaglie

legacy/builder/container_add_prototypes.go

@@ -34,7 +34,15 @@ func (s *ContainerAddPrototypes) Run(ctx *types.Context) error {
 	// Run preprocessor
 	sourceFile := ctx.SketchBuildPath.Join(ctx.Sketch.MainFile.Base() + ".cpp")
 	if err := GCCPreprocRunner(ctx, sourceFile, targetFilePath, ctx.IncludeFolders); err != nil {
-		return errors.WithStack(err)
+		if !ctx.OnlyUpdateCompilationDatabase {
+			return errors.WithStack(err)
+		}
+
+		// Do not bail out if we are generating the compile commands database
+		ctx.GetLogger().Println("info", "An error occurred adding prototypes: the compilation database may be incomplete or inaccurate..")
+		if err := sourceFile.CopyTo(targetFilePath); err != nil {
+			return errors.WithStack(err)
+		}
 	}
 
 	commands := []types.Command{