From db1a534a527e52975946102f00c1a325a74d43ed Mon Sep 17 00:00:00 2001
From: Joao Carlos Espiuca Monteiro <joao.monteiro@cm-robotics.com>
Date: Fri, 10 Dec 2021 11:50:26 +0100
Subject: [PATCH] forward declare fromMsg to avoid missing symbols in
 downstream libraries

---
 tf2/include/tf2/impl/utils.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tf2/include/tf2/impl/utils.h b/tf2/include/tf2/impl/utils.h
index a38eb4545..8953ceed3 100644
--- a/tf2/include/tf2/impl/utils.h
+++ b/tf2/include/tf2/impl/utils.h
@@ -24,6 +24,10 @@
 
 namespace tf2
 {
+
+// Forward declare functions needed in this header
+void fromMsg(const geometry_msgs::msg::Quaternion & in, tf2::Quaternion & out);
+
 namespace impl
 {