From 688d02176c05763fc8dcb9e5f5b1e5a19dc98c50 Mon Sep 17 00:00:00 2001
From: mogud <mogud@qq.com>
Date: Thu, 19 Dec 2019 21:34:38 +0800
Subject: [PATCH] build support list options

---
 lib/std/build.zig | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/lib/std/build.zig b/lib/std/build.zig
index dd8dcaed40..1565980279 100644
--- a/lib/std/build.zig
+++ b/lib/std/build.zig
@@ -557,7 +557,15 @@ pub const Builder = struct {
                 },
                 UserValue.Scalar => |s| return s,
             },
-            TypeId.List => panic("TODO list options to build script", .{}),
+            TypeId.List => switch (entry.value.value) {
+                UserValue.Flag => {
+                    warn("Expected -D{} to be a list, but received a boolean.\n", .{name});
+                    self.markInvalidUserInput();
+                    return null;
+                },
+                UserValue.Scalar => |s| return &[_][]const u8{s},
+                UserValue.List => |lst| return lst.toSliceConst(),
+            },
         }
     }