=> Checksum BLAKE2s OK for unac-1.7.0.tar.gz
=> Checksum SHA512 OK for unac-1.7.0.tar.gz
===> Installing dependencies for unac-1.7.0
=> Tool dependency libtool-base>=2.4.2nb9: found libtool-base-2.4.7nb1
=> Tool dependency nbpatch-[0-9]*: found nbpatch-20151107
=> Tool dependency cwrappers>=20150314: found cwrappers-20220403
=> Tool dependency checkperms>=1.1: found checkperms-1.12
=> Full dependency libiconv>=1.9.1nb4: found libiconv-1.17
===> Overriding tools for unac-1.7.0
===> Extracting for unac-1.7.0
===> Patching for unac-1.7.0
=> Applying pkgsrc patches for unac-1.7.0
=> Verifying /Volumes/data/jenkins/workspace/pkgsrc-macos-trunk-arm64/textproc/unac/patches/patch-aa
=> Applying pkgsrc patch /Volumes/data/jenkins/workspace/pkgsrc-macos-trunk-arm64/textproc/unac/patches/patch-aa
Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|$NetBSD: patch-aa,v 1.1.1.1 2009/07/27 13:46:57 drochner Exp $
|
|--- Makefile.in.orig	2002-09-02 12:51:42.000000000 +0200
|+++ Makefile.in
--------------------------
Patching file Makefile.in using Plan A...
Hunk #1 succeeded at 188.
done
===> Creating toolchain wrappers for unac-1.7.0
===> Configuring for unac-1.7.0
=> 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 a BSD-compatible install... /usr/bin/install -c -o pbulk -g staff
checking whether build environment is sane... yes
checking for gawk... /opt/pkg/bin/nawk
checking whether make sets ${MAKE}... yes
checking whether make sets ${MAKE}... (cached) yes
checking for aarch64-apple-darwin23-gcc... clang
checking for C compiler default output... configure: error: C compiler cannot create executables
*** Error code 77

Stop.
bmake[1]: stopped making "configure" in /Volumes/data/jenkins/workspace/pkgsrc-macos-trunk-arm64/textproc/unac
*** Error code 1

Stop.
bmake: stopped making "configure" in /Volumes/data/jenkins/workspace/pkgsrc-macos-trunk-arm64/textproc/unac