diff --git a/maidfile.toml b/maidfile.toml
index cf77577..cae964c 100644
--- a/maidfile.toml
+++ b/maidfile.toml
@@ -1,5 +1,6 @@
 [env]
 CC = "ccache clang"
+CXX = "ccache clang++"
 
 [tasks.build]
 path = "build"
diff --git a/src/silver/limits.c b/src/silver/limits.c
index fdcf2ef..541af69 100644
--- a/src/silver/limits.c
+++ b/src/silver/limits.c
@@ -1,3 +1,7 @@
+#if !defined(_WIN32) && !defined(__APPLE__)
+#define _GNU_SOURCE
+#endif
+
 #include "silver/vm.h"
 
 #include <stddef.h>