From: Bart Van Assche <bvanassche@acm.org>
Date: Mon, 6 Jan 2020 19:00:24 +0000 (-0800)
Subject: configure: Improve the getopt_long_only() test
X-Git-Tag: fio-3.18~18^2~8
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=d24ff97df43cfa9ad8c78dc7d74b2a602b174768;p=fio.git

configure: Improve the getopt_long_only() test

Fix the following build error if configure is invoked with
--extra-cflags=-Werror:

/tmp/fio-conf-20209-133775-26866.c: In function 'main':
/tmp/fio-conf-20209-133775-26866.c:6:11: error: null argument where non-null required (argument 3) [-Werror=nonnull]
   int c = getopt_long_only(argc, argv, NULL, NULL, NULL);
           ^~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---

diff --git a/configure b/configure
index 65ce3662..c11b7cda 100755
--- a/configure
+++ b/configure
@@ -1374,7 +1374,7 @@ cat > $TMPC << EOF
 #include <getopt.h>
 int main(int argc, char **argv)
 {
-  int c = getopt_long_only(argc, argv, NULL, NULL, NULL);
+  int c = getopt_long_only(argc, argv, "", NULL, NULL);
   return c;
 }
 EOF