From 72249ce889e494da82b86272768b33cb1fc4bb48 Mon Sep 17 00:00:00 2001
From: BigBlack <840206@qq.com>
Date: Thu, 14 Nov 2019 04:35:14 +0800
Subject: [PATCH] fix duplicate #define generation

---
 vlib/compiler/comptime.v | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/vlib/compiler/comptime.v b/vlib/compiler/comptime.v
index 4fd50ffa91..a9c7824e7b 100644
--- a/vlib/compiler/comptime.v
+++ b/vlib/compiler/comptime.v
@@ -230,7 +230,9 @@ fn (p mut Parser) chash() {
 	}
 	else if hash.contains('define') {
 		// Move defines on top
-		p.cgen.includes << '#$hash'
+		if p.first_pass() {
+			p.cgen.includes << '#$hash'
+		}
 	}
 	// Don't parse a non-JS V file (`#-js` flag)
 	else if hash == '-js'  {