From a30e54931004c5ad41a8a7b7233c31b40063c17b Mon Sep 17 00:00:00 2001
From: Brian Callahan <bcallah@openbsd.org>
Date: Mon, 19 Feb 2018 13:35:44 -0500
Subject: Add OpenBSD support.

---
 src/expand/proc_macro.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/expand/proc_macro.cpp')

diff --git a/src/expand/proc_macro.cpp b/src/expand/proc_macro.cpp
index 3eb0c85d..5c06a8ce 100644
--- a/src/expand/proc_macro.cpp
+++ b/src/expand/proc_macro.cpp
@@ -24,6 +24,10 @@
 # include <sys/wait.h>
 #endif
 
+#ifdef __OpenBSD__
+extern char **environ;
+#endif
+
 #define NEWNODE(_ty, ...)   ::AST::ExprNodeP(new ::AST::ExprNode##_ty(__VA_ARGS__))
 
 class Decorator_ProcMacroDerive:
-- 
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