From 1882fc41bb4db4e8ae05ef64f7c2c590664ddd39 Mon Sep 17 00:00:00 2001
From: Dan Gohman <sunfish@mozilla.com>
Date: Mon, 27 May 2019 09:14:29 -0700
Subject: [PATCH] Build sandboxed-system-primitives with -std=gnu99.

---
 wasmtime-wasi/build.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/wasmtime-wasi/build.rs b/wasmtime-wasi/build.rs
index 1ed59201b4..4145068a57 100644
--- a/wasmtime-wasi/build.rs
+++ b/wasmtime-wasi/build.rs
@@ -6,7 +6,9 @@ use std::env;
 use std::path::PathBuf;
 
 fn main() {
-    let dst = Config::new("sandboxed-system-primitives").build();
+    let dst = Config::new("sandboxed-system-primitives")
+        .cflag("-std=gnu99")
+        .build();
 
     println!("cargo:rustc-link-search=native={}", dst.display());
     println!("cargo:rustc-link-lib=static=SandboxedSystemPrimitives");