Automated report: NetBSD-current/amd64 build failure

[NetBSD Test Fixture <bracket%NetBSD.org@localhost>]

This is an automatically generated notice of a NetBSD-current/amd64
build failure.

The failure occurred on babylon4.netbsd.org, a NetBSD/amd64 host,
using sources from CVS date 2026.04.30.13.35.33.

An extract from the build.sh output follows:

    cc -O   -I/tmp/build/2026.04.30.13.35.33-amd64/tools/include/compat -I/tmp/build/2026.04.30.13.35.33-amd64/src/tools/compat -DHAVE_NBTOOL_CONFIG_H=1 -D_FILE_OFFSET_BITS=64 -c -o rpc_sample.lo.o    /tmp/build/2026.04.30.13.35.33-amd64/src/tools/rpcgen/../../usr.bin/rpcgen/rpc_sample.c
    --- rpc_tblout.lo ---
    #   compile  rpcgen/rpc_tblout.lo
    cc -O   -I/tmp/build/2026.04.30.13.35.33-amd64/tools/include/compat -I/tmp/build/2026.04.30.13.35.33-amd64/src/tools/compat -DHAVE_NBTOOL_CONFIG_H=1 -D_FILE_OFFSET_BITS=64 -c -o rpc_tblout.lo.o    /tmp/build/2026.04.30.13.35.33-amd64/src/tools/rpcgen/../../usr.bin/rpcgen/rpc_tblout.c
    --- dependall-gzip ---
    /tmp/build/2026.04.30.13.35.33-amd64/src/tools/gzip/../../usr.bin/gzip/gzip.c:125:10: fatal error: zstd.h: No such file or directory
      125 | #include <zstd.h>
          |          ^~~~~~~~
    compilation terminated.
    --- dependall-what ---
    mv -f what.lo.o what.lo

The following commits were made between the last successful build and
the first failed build:

    2026.04.30.13.16.32 thorpej src/sys/arch/alpha/include/vmparam.h 1.41
    2026.04.30.13.31.00 simonb src/external/bsd/libarchive/include/config_netbsd.h 1.19
    2026.04.30.13.31.47 simonb src/external/bsd/pkg_install/sbin/Makefile.inc 1.6
    2026.04.30.13.31.47 simonb src/tests/lib/libarchive/Makefile 1.20
    2026.04.30.13.31.47 simonb src/tests/usr.bin/cpio/Makefile 1.7
    2026.04.30.13.31.47 simonb src/tests/usr.bin/tar/Makefile 1.6
    2026.04.30.13.31.47 simonb src/usr.bin/unzip/Makefile 1.9
    2026.04.30.13.35.32 simonb src/usr.bin/gzip/Makefile 1.20
    2026.04.30.13.35.32 simonb src/usr.bin/gzip/gzip.1 1.34
    2026.04.30.13.35.32 simonb src/usr.bin/gzip/gzip.c 1.130
    2026.04.30.13.35.33 simonb src/usr.bin/gzip/unzstd.c 1.1

Logs can be found at:

    http://releng.NetBSD.org/b5reports/amd64/commits-2026.04.html#2026.04.30.13.35.33