Failed compile 1.8.x with undefined symbol `trace' on latest cygwin64(gcc6.4)

Tested with make TARGET=cygwin

gcc  -g -o haproxy src/ev_poll.o ebtree/ebtree.o ebtree/eb32sctree.o ebtree/eb32tree.o ebtree/eb64tree.o ebtree/ebmbtree.o ebtree/ebsttree.o ebtree/ebimtree.o ebtree/ebistree.o src/proto_http.o src/cfgparse.o src/server.o src/stream.o src/flt_spoe.o src/stick_table.o src
/stats.o src/mux_h2.o src/checks.o src/haproxy.o src/log.o src/dns.o src/peers.o src/standard.o src/sample.o src/cli.o src/stream_interface.o src/proto_tcp.o src/backend.o src/proxy.o src/tcp_rules.o src/listener.o src/flt_http_comp.o src/pattern.o src/cache.o src/filter
s.o src/vars.o src/acl.o src/payload.o src/connection.o src/raw_sock.o src/proto_uxst.o src/flt_trace.o src/session.o src/ev_select.o src/channel.o src/task.o src/queue.o src/applet.o src/map.o src/frontend.o src/freq_ctr.o src/lb_fwlc.o src/mux_pt.o src/auth.o src/fd.o
src/hpack-dec.o src/memory.o src/lb_fwrr.o src/lb_chash.o src/lb_fas.o src/hathreads.o src/chunk.o src/lb_map.o src/xxhash.o src/regex.o src/shctx.o src/buffer.o src/action.o src/h1.o src/compression.o src/pipe.o src/namespace.o src/sha1.o src/hpack-tbl.o src/hpack-enc.o
 src/uri_auth.o src/time.o src/proto_udp.o src/arg.o src/signal.o src/protocol.o src/lru.o src/hdr_idx.o src/hpack-huff.o src/mailers.o src/h2.o src/base64.o src/hash.o
src/mux_h2.o: In function `h2s_frt_make_resp_data':
/home/***/haproxy-1.8.3/src/mux_h2.c:3278: undefined reference to `trace'
/home/***/haproxy-1.8.3/src/mux_h2.c:3278:(.text+0x39d0): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `trace'
collect2: error: ld returned 1 exit status
make: *** [Makefile:898: haproxy] Error 1

Comment the trace in mux_h2.c works, but is there something wrong with the src or compiler?

nm src/standard.o | grep trace Show

0000000000006300 T .weak.trace.ulltoa
                 w trace

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