From 7b2006521156b54192ce1ef8dfaf3aab20650a1d Mon Sep 17 00:00:00 2001
From: Eric Kohl <eric.kohl@reactos.org>
Date: Sat, 26 Dec 2020 14:22:43 +0100
Subject: [PATCH] [WIDL] Fix a deprecation message and hints on how to build a
 new scanner and parser

---
 sdk/tools/widl/parser.y   | 2 +-
 sdk/tools/widl/readme.txt | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 sdk/tools/widl/readme.txt

diff --git a/sdk/tools/widl/parser.y b/sdk/tools/widl/parser.y
index 622e742da19..63b70e9e47c 100644
--- a/sdk/tools/widl/parser.y
+++ b/sdk/tools/widl/parser.y
@@ -321,7 +321,7 @@ static typelib_t *current_typelib;
 %right '!' '~' CAST PPTR POS NEG ADDRESSOF tSIZEOF
 %left '.' MEMBERPTR '[' ']'
 
-%error-verbose
+%define parse.error verbose
 
 %%
 
diff --git a/sdk/tools/widl/readme.txt b/sdk/tools/widl/readme.txt
new file mode 100644
index 00000000000..4b7a6216dcf
--- /dev/null
+++ b/sdk/tools/widl/readme.txt
@@ -0,0 +1,5 @@
+To generate a new scanner and parser run:
+
+flex --header-file=parser.yy.h --outfile=parser.yy.c parser.l
+
+bison --defines=parser.tab.h --name-prefix=parser_ parser.y