sync code with last improvements from OpenBSD

lib/mesa/mk/libmesa_util/Makefile

@@ -0,0 +1,91 @@
+#	$OpenBSD: Makefile,v 1.8 2023/01/28 08:56:35 jsg Exp $
+
+LIB=	mesa_util
+
+NOPROFILE=
+
+SRCS=	anon_file.c \
+	bitscan.c \
+	blob.c \
+	build_id.c \
+	compress.c \
+	crc32.c \
+	dag.c \
+	disk_cache.c \
+	disk_cache_os.c \
+	double.c \
+	fast_idiv_by_const.c \
+	fossilize_db.c \
+	futex.c \
+	half_float.c \
+	hash_table.c \
+	u_idalloc.c \
+	log.c \
+	memstream.c \
+	mesa-sha1.c \
+	os_file.c \
+	os_memory_fd.c \
+	os_misc.c \
+	os_socket.c \
+	u_trace.c \
+	os_time.c \
+	ralloc.c \
+	rand_xor.c \
+	rb_tree.c \
+	register_allocate.c \
+	rgtc.c \
+	set.c \
+	simple_mtx.c \
+	sha1.c \
+	slab.c \
+	softfloat.c \
+	sparse_array.c \
+	string_buffer.c \
+	strtod.c \
+	u_atomic.c \
+	u_call_once.c \
+	u_debug_describe.c \
+	u_debug_refcnt.c \
+	u_dl.c \
+	u_cpu_detect.c \
+	u_printf.c \
+	u_worklist.c \
+	u_debug.c \
+	u_debug_memory.c \
+	u_math.c \
+	u_mm.c \
+	u_process.c \
+	u_qsort.cpp \
+	rwlock.c \
+	u_hash_table.c \
+	u_queue.c \
+	u_thread.c \
+	u_vector.c \
+	vma.c \
+	mesa_cache_db.c
+
+SRCS+=	u_debug_stack.c \
+	u_debug_symbol.c \
+	format_srgb.c
+
+.include "../Makefile.inc"
+
+CFLAGS+=	${C_VIS_ARGS}
+CXXFLAGS+=	${CXX_VIS_ARGS} -ffunction-sections -fdata-sections
+CPPFLAGS+=	-I${MESA_SRC}/src/util \
+		-I${MESA_SRC}/src/mesa \
+		-I${MESA_SRC}/src/gallium/include \
+		-I${MESA_SRC}/src/gallium/auxiliary
+
+install:
+
+obj: _xenocara_obj
+
+.include <bsd.lib.mk>
+.include <bsd.xorg.mk>
+
+.PATH: ${MESA_SRC}/src/util
+.PATH: ${MESA_SRC}/src/util/indices
+.PATH: ${MESA_SRC}/src/util/perf
+.PATH: ${MESA_SRC}/src/util/sha1
+.PATH: ${MESA_SRC}/generated/src/util