From b0bfde917b31fbf41775d5fd8e8bc2e7e98bbf4b Mon Sep 17 00:00:00 2001
From: Jeremy Volkman <jeremy@cedarai.com>
Date: Tue, 27 Dec 2022 08:15:09 -0800
Subject: [PATCH] Add support for -undefined error

`-undefined dynamic_lookup` was added in #13991. `-undefined error` is the
opposite, and can be used to revert an `-undefined dynamic_lookup` flag
specified previously on the command line.
---
 src/main.zig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/main.zig b/src/main.zig
index ec0eb74e93..b2caf40c6a 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -1703,6 +1703,8 @@ fn buildOutputType(
                     .undefined => {
                         if (mem.eql(u8, "dynamic_lookup", it.only_arg)) {
                             linker_allow_shlib_undefined = true;
+                        } else if (mem.eql(u8, "error", it.only_arg)) {
+                            linker_allow_shlib_undefined = false;
                         } else {
                             fatal("unsupported -undefined option '{s}'", .{it.only_arg});
                         }