From f7d7546c93daa4491594b88976f199408c8326c5 Mon Sep 17 00:00:00 2001
From: bbhtt <bbhtt.zn0i8@slmail.me>
Date: Sat, 16 May 2026 12:18:17 +0530
Subject: [PATCH] configure: Ignore typedef-redefinition warnings with Clang

redefinition is legal in C11 and before that via gcc extension

Fixes: https://github.com/ostreedev/ostree/issues/3590
---
 configure.ac | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/configure.ac b/configure.ac
index 934beebd..eacbabbd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -53,6 +53,12 @@ CC_CHECK_FLAGS_APPEND([WARN_CFLAGS], [CFLAGS], [\
   -Wstrict-aliasing=2 \
   -Werror=unused-result \
 ])])
+
+AS_CASE([$CC], [*clang*], [
+  CC_CHECK_FLAGS_APPEND([WARN_CFLAGS], [CFLAGS],
+                        [-Wno-typedef-redefinition])
+])
+
 AC_SUBST(WARN_CFLAGS)
 
 AC_ARG_ENABLE(sanitizers,
-- 
2.39.5