From: Michael Jeanson <mjeanson@efficios.com>
Date: Thu, 21 Jul 2022 13:10:30 +0000 (-0400)
Subject: fix: Disable warnings for GNU extensions on Clang
X-Git-Url: http://git.lttng.org/?p=lttng-ust.git;a=commitdiff_plain;h=fa184a4dbf3ee0ac1cc1001566031abbc7866f87

fix: Disable warnings for GNU extensions on Clang

Some versions of Clang enabled '-Wgnu' in '-Wall', since we rely on
GNUisms in the code this results in numerous errors. Check if the
compiler accepts '-Wno-gnu' to disable those warnings.

Change-Id: I9d1126744e427a6cf7c18e219cae5431227a43c0
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/configure.ac b/configure.ac
index ba4c8555..cca827a7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -162,6 +162,7 @@ m4_define([WARN_FLAGS_LIST], [ dnl
   -Wno-sign-compare dnl
   -Wno-missing-field-initializers dnl
   -Wno-null-dereference dnl
+  -Wno-gnu dnl Disable warnings for GNU extensions on Clang
 ])
 
 # Pass -Werror as an extra flag during the test: this is needed to make the