From 7634101069db26b003adeec09c6aa14646363557 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Wed, 12 Sep 2018 22:43:38 -0400
Subject: [PATCH] configure: only try -Qunused-arguments for clang

other compilers don't need this option, but gcc 3 and perhaps others
accept it despite not understanding it, then print warnings about it
at build time.

omitting it when not needed will also help shorten the command lines.
---
 configure | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure b/configure
index 6e489a1d..de2add15 100755
--- a/configure
+++ b/configure
@@ -507,7 +507,7 @@ tryflag CFLAGS_AUTO -Werror=pointer-arith
 # parameter to stop printing warnings about LDFLAGS passed during
 # compiling stage and CFLAGS passed during linking stage.
 #
-tryflag CFLAGS_AUTO -Qunused-arguments
+test "$cc_family" = clang && tryflag CFLAGS_AUTO -Qunused-arguments
 
 if test "x$warnings" = xyes ; then
 tryflag CFLAGS_AUTO -Wall