libzpool: Set -Wno-error=typedef-redefinition for clang

In some versions of LLVM (at least 21), the <*intrin.h> headers contain
unguarded duplicate typedefs; this isn't permitted prior to C11, and
libzpool is built as C99.  FreeBSD's LLVM backported LLVM PR #153820
to fix this, but other versions of LLVM (e.g., upstream, or on Linux)
don't have the patch, so this breaks the build.

Add -Wno-error=typedef-redefinition to downgrade this from an error
to a warning.

MFC after:	2 weeks
Reviewed by:	dim, emaste
Sponsored by:	https://www.patreon.com/bsdivy
Differential Revision:	https://reviews.freebsd.org/D56653

This commit is contained in:

Lexi Winter

2026-04-27 22:31:47 +01:00

parent b866d05ea2

commit 036ff38ebd

1 changed files with 5 additions and 0 deletions

									
										cddl/lib/libzpool/Makefile
									
		+5
		
												View File
												
				@@ -293,6 +293,11 @@ CFLAGS+=	-g -DDEBUG=1

				CFLAGS.gcc+=	-Wno-pointer-to-int-cast

				# Some versions of LLVM contain duplicate typedefs in the <*intrin.h> headers,

				# which are not allowed prior to C11; since libzpool is built with C99, make

				# this not be an error.

				CFLAGS.clang+=	-Wno-error=typedef-redefinition

				# Pointer values are used as debugging "tags" to mark reference count

				# ownerships and in some cases the tag reference is dropped after an

				# object is freed.