From fcc1c14adc44ae1772dc2c41f577e39063d03144 Mon Sep 17 00:00:00 2001
From: "N. Engelhardt" <nak@symbioticeda.com>
Date: Mon, 6 Jan 2020 19:10:13 +0100
Subject: [PATCH] error if multiple -g options are given for abc

---
 passes/techmap/abc.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/passes/techmap/abc.cc b/passes/techmap/abc.cc
index 28a1c01b1..581652a41 100644
--- a/passes/techmap/abc.cc
+++ b/passes/techmap/abc.cc
@@ -1623,6 +1623,8 @@ struct AbcPass : public Pass {
 				continue;
 			}
 			if (arg == "-g" && argidx+1 < args.size()) {
+				if (g_arg_from_cmd)
+					log_cmd_error("Can only use -g once. Please combine.");
 				g_arg = args[++argidx];
 				g_argidx = argidx;
 				g_arg_from_cmd = true;
-- 
2.30.2