[PATCH] widl: Emit a guard around library contents.

[Nikolay Sivov]

Signed-off-by: Nikolay Sivov <nsivov at codeweavers.com>
---
 tools/widl/header.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/widl/header.c b/tools/widl/header.c
index c8a12556cc9..743d86f0ee9 100644
--- a/tools/widl/header.c
+++ b/tools/widl/header.c
@@ -1755,8 +1755,11 @@ static void write_header_stmts(FILE *header, const statement_list_t *stmts, cons
         break;
       }
       case STMT_LIBRARY:
+        fprintf(header, "#ifndef __%s_LIBRARY_DEFINED__\n", stmt->u.lib->name);
+        fprintf(header, "#define __%s_LIBRARY_DEFINED__\n", stmt->u.lib->name);
         write_library(header, stmt->u.lib);
         write_header_stmts(header, stmt->u.lib->stmts, NULL, FALSE);
+        fprintf(header, "#endif /* __%s_LIBRARY_DEFINED__ */\n", stmt->u.lib->name);
         break;
       case STMT_CPPQUOTE:
         fprintf(header, "%s\n", stmt->u.str);
-- 
2.28.0