From e0986692ef230466cfe3eb0029bac359aae1ea13 Mon Sep 17 00:00:00 2001
From: q66 <daniel@octaforge.org>
Date: Thu, 26 Apr 2018 00:42:48 +0200
Subject: [PATCH] make body fix

---
 ostd/build/make.hh | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/ostd/build/make.hh b/ostd/build/make.hh
index aac7e7d..f17990a 100644
--- a/ostd/build/make.hh
+++ b/ostd/build/make.hh
@@ -82,9 +82,13 @@ struct make_rule {
     }
 
     make_rule &body(std::function<void()> act_f) noexcept {
-        p_body = [act_f = std::move(act_f)](auto, auto) {
-            act_f();
-        };
+        if (act_f) {
+            p_body = [act_f = std::move(act_f)](auto, auto) {
+                act_f();
+            };
+        } else {
+            p_body = body_func{};
+        }
         return *this;
     }