From 05a529cbcbe84dd6115b1f70aa75f060b37db998 Mon Sep 17 00:00:00 2001
From: Chris Denton <chris@chrisdenton.dev>
Date: Tue, 31 Dec 2024 14:53:09 +0100
Subject: [PATCH] Fix is_flag_supported on msvc (#1336)

---
 src/lib.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index b2d0979e..f371770b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -727,6 +727,13 @@ impl Build {
 
         cmd.arg(&src);
 
+        // On MSVC skip the CRT by setting the entry point to `main`.
+        // This way we don't need to add the default library paths.
+        if compiler.is_like_msvc() {
+            // Flags from _LINK_ are appended to the linker arguments.
+            cmd.env("_LINK_", "-entry:main");
+        }
+
         let output = cmd.output()?;
         let is_supported = output.status.success() && output.stderr.is_empty();