From cdd49714f7023d83ffe0b939953e3460e4192c22 Mon Sep 17 00:00:00 2001
From: Jason Ish <jason.ish@oisf.net>
Date: Wed, 20 Nov 2024 09:12:38 -0600
Subject: [PATCH] fixup

---
 rust/Makefile.am  | 3 ++-
 rust/src/build.rs | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/rust/Makefile.am b/rust/Makefile.am
index 99efed0c831d..3c0ce75cafab 100644
--- a/rust/Makefile.am
+++ b/rust/Makefile.am
@@ -38,7 +38,8 @@ CARGO_VARS = 	TOP_BUILDDIR=$(abs_top_builddir) \
 		TOP_SRCDIR=$(abs_top_srcdir) \
 		CARGO_TARGET_DIR="$(abs_top_builddir)/rust/target" \
 		SURICATA_LUA_SYS_HEADER_DST="$(abs_top_builddir)/rust/gen" \
-		CFLAGS="$(CFLAGS)"
+		CFLAGS="$(CFLAGS)" \
+		CPPFLAGS="$(CPPFLAGS)"
 
 all-local: Cargo.toml
 	mkdir -p $(abs_top_builddir)/rust/gen
diff --git a/rust/src/build.rs b/rust/src/build.rs
index 86bb6d0430b3..55df182ebe22 100644
--- a/rust/src/build.rs
+++ b/rust/src/build.rs
@@ -17,6 +17,10 @@ fn main() {
         .clang_arg("-D__SCFILENAME__=\"\"")
         .clang_arg(format!("-I{}/src", &build_dir));
 
+    if let Ok(cppflags) = std::env::var("CPPFLAGS") {
+        builder = builder.clang_arg(cppflags);
+    }
+
     let headers = &["app-layer-types.h", "app-layer-protos.h"];
     for header in headers {
         builder = builder.header(format!("{}/src/{}", &src_dir, header));