From 30201bac38514dede6772a0b69586ee9492f07c7 Mon Sep 17 00:00:00 2001
From: Michael Carlberg <c@rlberg.se>
Date: Wed, 11 Jan 2017 09:28:39 +0100
Subject: [PATCH] fix(env_util): Add missing header

---
 src/utils/env.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/utils/env.cpp b/src/utils/env.cpp
index f6cfc376..4a4c10fc 100644
--- a/src/utils/env.cpp
+++ b/src/utils/env.cpp
@@ -1,4 +1,5 @@
 #include <cstring>
+#include <cstdlib>
 #include <thread>
 #include <utility>
 
@@ -9,7 +10,7 @@ POLYBAR_NS
 namespace env_util {
   bool has(const char* var) {
     const char* env{std::getenv(var)};
-    return env != nullptr && strlen(env) > 0;
+    return env != nullptr && std::strlen(env) > 0;
   }
 
   string get(const char* var, string fallback) {