From 0d610fdbe5368f8c005ec55a5aa80dba544de167 Mon Sep 17 00:00:00 2001
From: Tyler Retzlaff <roretzla@microsoft.com>
Date: Wed, 20 Dec 2023 09:27:41 -0800
Subject: [PATCH] [dpdk-rs] Enhancement: set -std=c11 when invoking toolchains

starting with dpdk release 23.11 it is a requirement that application
toolchains use a C11 conformant compiler [1].

1. https://doc.dpdk.org/guides/rel_notes/release_23_11.html

Signed-off-by: Tyler Retzlaff <roretzla@microsoft.com>
---
 dpdk-rs/build.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dpdk-rs/build.rs b/dpdk-rs/build.rs
index 6fbcb780c..388ec027e 100644
--- a/dpdk-rs/build.rs
+++ b/dpdk-rs/build.rs
@@ -83,6 +83,7 @@ fn os_build() -> Result<()> {
     // Step 2: Generate bindings for the DPDK headers.
     let bindings: Bindings = Builder::default()
         .clang_arg(&format!("-I{}", include_path))
+        .clang_arg("-std=c11")
         .allowlist_recursively(true)
         .allowlist_type("rte_mbuf")
         .allowlist_type("rte_mempool")
@@ -161,6 +162,7 @@ fn os_build() -> Result<()> {
     // that aren't compiled into the libraries.
     let mut builder: Build = cc::Build::new();
     builder.opt_level(3);
+    builder.flag("-std=c11");
     builder.flag("-march=native");
     builder.file("inlined.c");
     builder.include(include_path);
@@ -298,6 +300,7 @@ fn os_build() -> Result<()> {
         .allowlist_function("rte_eth_tx_burst")
         .allowlist_function("rte_eth_rx_burst")
         .allowlist_function("rte_eal_init")
+        .clang_arg("-std=c11")
         .clang_arg("-mavx")
         .header("wrapper.h")
         .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
@@ -312,6 +315,7 @@ fn os_build() -> Result<()> {
     let mut builder: Build = cc::Build::new();
     builder.opt_level(3);
     builder.pic(true);
+    builder.flag("-std=c11");
     builder.flag("-march=native");
     builder.file("inlined.c");
     for header_location in &header_locations {