From c76f65a49a9de6056dcdf02d9ac4edef671284f3 Mon Sep 17 00:00:00 2001
From: Artem Pavlenko <artem@mapnik.org>
Date: Wed, 24 Mar 2021 11:44:56 +0000
Subject: [PATCH] Add missing header (linux)

---
 test/unit/projection/proj_transform.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test/unit/projection/proj_transform.cpp b/test/unit/projection/proj_transform.cpp
index 4bb8533eb..d7136efd8 100644
--- a/test/unit/projection/proj_transform.cpp
+++ b/test/unit/projection/proj_transform.cpp
@@ -3,6 +3,7 @@
 #include <mapnik/projection.hpp>
 #include <mapnik/proj_transform.hpp>
 #include <mapnik/geometry/box2d.hpp>
+#include <cmath>
 #include <tuple>
 
 TEST_CASE("projection transform")