From dbd1eaab6a478cf0c3ea093a56b3d04c29278615 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Tue, 12 Jan 2021 10:23:11 +0000
Subject: [PATCH] build: Avoid warnings about unknown pragmas.

In commit 4bbbf03b8bc266ed2b63c461cd0945250bb134fe we started to
ignore bogus GCC 11 warnings.  Unfortunately earlier versions of GCC
don't know about those pragmas so give warnings [hence errors in
developer builds] like:

tsk.c:75:32: error: unknown option after '#pragma GCC diagnostic' kind [-Werror=pragmas]

Turn off these warnings.

Updates: commit 4bbbf03b8bc266ed2b63c461cd0945250bb134fe
(cherry picked from commit 812f837c97f48ce0c26a0e02286fb9180c282923)
---
 m4/guestfs-c.m4 | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/m4/guestfs-c.m4 b/m4/guestfs-c.m4
index 25ffea0d9..bbb4db464 100644
--- a/m4/guestfs-c.m4
+++ b/m4/guestfs-c.m4
@@ -108,6 +108,9 @@ gl_WARN_ADD([-Wformat-truncation=1])
 dnl GCC 9 at level 2 gives apparently bogus errors when %.*s is used.
 gl_WARN_ADD([-Wformat-overflow=1])
 
+dnl GCC < 11 gives warnings when disabling GCC 11 warnings.
+gl_WARN_ADD([-Wno-pragmas])
+
 AC_SUBST([WARN_CFLAGS])
 
 NO_SNV_CFLAGS=
-- 
2.31.1