=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for tcpreplay-4.3.3.tar.xz
=> Checksum RMD160 OK for tcpreplay-4.3.3.tar.xz
=> Checksum SHA512 OK for tcpreplay-4.3.3.tar.xz
===> Installing dependencies for tcpreplay-4.3.3
=> Tool dependency libtool-base>=2.4.2nb9: found libtool-base-2.4.6nb2
=> Tool dependency nbpatch-[0-9]*: found nbpatch-20151107
=> Tool dependency xz>=4.999.9betanb1: found xz-5.2.5
=> Tool dependency checkperms>=1.1: found checkperms-1.12
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
===> Skipping vulnerability checks.
WARNING: No /opt/pkg/pkgdb/pkg-vulnerabilities file found.
WARNING: To fix run: `/opt/pkg/sbin/pkg_admin -K /opt/pkg/pkgdb fetch-pkg-vulnerabilities'.
===> Overriding tools for tcpreplay-4.3.3
===> Extracting for tcpreplay-4.3.3
===> Patching for tcpreplay-4.3.3
=> Applying pkgsrc patches for tcpreplay-4.3.3
=> Verifying /opt/pkgsrc/net/tcpreplay/patches/patch-configure
=> Applying pkgsrc patch /opt/pkgsrc/net/tcpreplay/patches/patch-configure
Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|$NetBSD: patch-configure,v 1.1 2020/06/21 15:30:39 nia Exp $
|
|Shell portability.
|
|--- configure.orig	2020-06-14 22:29:09.000000000 +0000
|+++ configure
--------------------------
Patching file configure using Plan A...
Hunk #1 succeeded at 18537.
done
===> Creating toolchain wrappers for tcpreplay-4.3.3
===> Configuring for tcpreplay-4.3.3
=> Modifying GNU configure scripts to avoid --recheck
=> Replacing config-guess with pkgsrc versions
=> Replacing config-sub with pkgsrc versions
=> Replacing install-sh with pkgsrc version
=> Checking for portability problems in extracted files
checking whether to enable maintainer-specific portions of Makefiles... yes
checking if malloc debugging is wanted... no
checking build system type... aarch64-apple-darwin20
checking host system type... aarch64-apple-darwin20
checking target system type... aarch64-apple-darwin20
checking what macOS compiler to use... /Library/Developer/CommandLineTools/usr/bin/clang -m64 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk
checking for cygwin development environment... no
checking for a BSD-compatible install... /usr/bin/install -c -o sjmulder -g staff
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... config/install-sh -c -d
checking for gawk... /opt/pkg/bin/nawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether make supports nested variables... (cached) yes
checking for style of include used by make... GNU
checking for aarch64-apple-darwin20-gcc... /Library/Developer/CommandLineTools/usr/bin/clang -m64 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk
checking whether the C compiler works... no
configure: error: in `/opt/work/net/tcpreplay/work/tcpreplay-4.3.3':
configure: error: C compiler cannot create executables
See `config.log' for more details
*** Error code 77

Stop.
bmake[1]: stopped in /opt/pkgsrc/net/tcpreplay
*** Error code 1

Stop.
bmake: stopped in /opt/pkgsrc/net/tcpreplay