arg: Include headers for std::abs()

Required for compiling with clang on macOS.

https://bugzilla.gnome.org/show_bug.cgi?id=780350

1 files changed, 3 insertions, 0 deletions

diff --git a/gi/arg.cpp b/gi/arg.cpp
index 2e335203..81ebf4de 100644
--- a/gi/arg.cpp
+++ b/gi/arg.cpp
@@ -23,6 +23,9 @@
 
 #include <config.h>
 
+#include <cstdlib>
+#include <cmath>
+
 #include "arg.h"
 #include "gtype.h"
 #include "object.h"