diff --git a/runtime/internal/clite/os/_os/os.c b/runtime/internal/clite/os/_os/os.c
deleted file mode 100644
index 45c2e8e8..00000000
--- a/runtime/internal/clite/os/_os/os.c
+++ /dev/null
@@ -1,14 +0,0 @@
-#include <stdlib.h>
-#include <errno.h>
-
-int cliteClearenv()
-{
-	extern char **environ;
-	if (environ != NULL)
-	{
-		*environ = NULL;
-	}
-	return 0;
-}
-
-int cliteErrno() { return errno; }
diff --git a/runtime/internal/clite/os/_os/os.cpp b/runtime/internal/clite/os/_os/os.cpp
new file mode 100644
index 00000000..cc3d29d5
--- /dev/null
+++ b/runtime/internal/clite/os/_os/os.cpp
@@ -0,0 +1,15 @@
+#include <errno.h>
+#include <stdlib.h>
+
+extern "C" {
+
+int cliteClearenv() {
+    extern char **environ;
+    if (environ != NULL) {
+        *environ = NULL;
+    }
+    return 0;
+}
+
+int cliteErrno() { return errno; }
+}
\ No newline at end of file
diff --git a/runtime/internal/clite/os/os_darwin.go b/runtime/internal/clite/os/os_darwin.go
index 3de6684e..5dccd605 100644
--- a/runtime/internal/clite/os/os_darwin.go
+++ b/runtime/internal/clite/os/os_darwin.go
@@ -23,7 +23,7 @@ import (
 )
 
 const (
-	LLGoFiles   = "_os/os.c"
+	LLGoFiles   = "_os/os.cpp"
 	LLGoPackage = "link"
 )