From 7b3afc880b1ab018e6cec5f429de44a04088bacb Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Sun, 7 Jan 2024 16:19:23 -0700
Subject: Compilation: add definition to prefer ucrt for windows C/C++ files

This makes C/C++ files when targeting mingw-w64 choose to depend on ucrt
for stdio.
---
 src/Compilation.zig | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/Compilation.zig')

diff --git a/src/Compilation.zig b/src/Compilation.zig
index cfd1a2fc31..f02a6e67cc 100644
--- a/src/Compilation.zig
+++ b/src/Compilation.zig
@@ -5100,7 +5100,10 @@ pub fn addCCArgs(
     if (target.os.tag == .windows) switch (ext) {
         .c, .cpp, .m, .mm, .h, .cu, .rc, .assembly, .assembly_with_cpp => {
             const minver: u16 = @truncate(@intFromEnum(target.os.getVersionRange().windows.min) >> 16);
-            try argv.append(try std.fmt.allocPrint(argv.allocator, "-D_WIN32_WINNT=0x{x:0>4}", .{minver}));
+            try argv.appendSlice(&.{
+                try std.fmt.allocPrint(arena, "-D_WIN32_WINNT=0x{x:0>4}", .{minver}),
+                "-D__MSVCRT_VERSION__=0xE00", // use ucrt
+            });
         },
         else => {},
     };
-- 
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