=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for libffcall-2.2.tar.gz
=> Checksum RMD160 OK for libffcall-2.2.tar.gz
=> Checksum SHA512 OK for libffcall-2.2.tar.gz
===> Installing dependencies for libffcall-2.2
=> Tool dependency libtool-base>=2.4.2nb9: found libtool-base-2.4.6nb2
=> Tool dependency nbpatch-[0-9]*: found nbpatch-20151107
=> 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 libffcall-2.2
===> Extracting for libffcall-2.2
===> Patching for libffcall-2.2
=> Applying pkgsrc patches for libffcall-2.2
=> Verifying /opt/pkgsrc/devel/libffcall/patches/patch-common_asm-x86__64.h
=> Applying pkgsrc patch /opt/pkgsrc/devel/libffcall/patches/patch-common_asm-x86__64.h
Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|$NetBSD: patch-common_asm-x86__64.h,v 1.1 2020/04/18 22:00:40 joerg Exp $
|
|--- common/asm-x86_64.h.orig	2020-03-11 16:04:30.072321269 +0000
|+++ common/asm-x86_64.h
--------------------------
Patching file common/asm-x86_64.h using Plan A...
Hunk #1 succeeded at 280.
done
===> Creating toolchain wrappers for libffcall-2.2
===> Configuring for libffcall-2.2
=> 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 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... build-aux/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 sets $(MAKE)... (cached) yes
checking for aarch64-apple-darwin20-gcc... clang
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether clang accepts -g... yes
checking for clang option to accept ISO C89... none needed
checking whether clang understands -c and -o together... yes
checking for style of include used by make... GNU
checking dependency style of clang... gcc3
checking how to run the C preprocessor... clang -E
checking for grep that handles long lines and -e... (cached) /usr/bin/grep
checking for egrep... (cached) /usr/bin/egrep
checking whether clang needs -traditional... no
checking whether using GNU C... yes
checking whether C symbols are prefixed with underscore at the linker level... yes
checking whether to use C++... yes
checking whether the C++ compiler (clang++ -O2 -L/opt/pkg/lib) works... no
checking for Minix Amsterdam compiler... no
checking for aarch64-apple-darwin20-ar... no
checking for ar... ar
checking for aarch64-apple-darwin20-ranlib... no
checking for ranlib... ranlib
checking how to make hard links... ln
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking minix/config.h usability... no
checking minix/config.h presence... no
checking for minix/config.h... no
checking whether it is safe to define __EXTENSIONS__... yes
checking whether _XOPEN_SOURCE should be defined... no
checking build system type... aarch64-apple-darwin20
checking host system type... aarch64-apple-darwin20
checking host CPU and C ABI... arm64
checking how to print strings... print -r
checking for a sed that does not truncate output... /opt/pkg/bin/nbsed
checking for fgrep... /usr/bin/grep -F
checking for ld used by clang... /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld
checking if the linker (/Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) is GNU ld... no
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... (cached) 1048576
checking how to convert aarch64-apple-darwin20 file names to aarch64-apple-darwin20 format... func_convert_file_noop
checking how to convert aarch64-apple-darwin20 file names to toolchain format... func_convert_file_noop
checking for /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld option to reload object files... -r
checking for aarch64-apple-darwin20-objdump... no
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for aarch64-apple-darwin20-dlltool... no
checking for dlltool... no
checking how to associate runtime and link libraries... print -r --
checking for aarch64-apple-darwin20-ar... ar
checking for archiver @FILE support... no
checking for aarch64-apple-darwin20-strip... no
checking for strip... strip
checking for aarch64-apple-darwin20-ranlib... ranlib
checking command to parse /usr/bin/nm -B output from clang object... ok
checking for sysroot... no
checking for a working dd... /bin/dd
checking how to truncate binary pipes... /bin/dd bs=4096 count=1
checking for aarch64-apple-darwin20-mt... no
checking for mt... no
checking if : is a manifest tool... no
checking for aarch64-apple-darwin20-dsymutil... no
checking for dsymutil... dsymutil
checking for aarch64-apple-darwin20-nmedit... no
checking for nmedit... nmedit
checking for aarch64-apple-darwin20-lipo... no
checking for lipo... lipo
checking for aarch64-apple-darwin20-otool... no
checking for otool... otool
checking for aarch64-apple-darwin20-otool64... no
checking for otool64... no
checking for -single_module linker flag... yes
checking for -exported_symbols_list linker flag... yes
checking for -force_load linker flag... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if clang supports -fno-rtti -fno-exceptions... yes
checking for clang option to produce PIC... -fno-common -DPIC
checking if clang PIC flag -fno-common -DPIC works... yes
checking if clang static flag -static works... no
checking if clang supports -c -o file.o... rm: conftest*: No such file or directory
yes
checking if clang supports -c -o file.o... (cached) yes
checking whether the clang linker (/Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... darwin20 dyld
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking whether small structs are returned in registers... yes
checking whether floats are returned in integer registers... yes
checking for unistd_h... (cached) yes
checking for ANSI C header files... (cached) yes
checking for getpagesize... yes
checking for getpagesize declaration... 
         extern int getpagesize (void);
checking for vm_allocate... no
checking sys/mman.h usability... yes
checking sys/mman.h presence... yes
checking for sys/mman.h... yes
checking for mmap... yes
checking for working mmap... yes
checking for mprotect... yes
checking for working mprotect... yes
checking sys/shm.h usability... yes
checking sys/shm.h presence... yes
checking for sys/shm.h... yes
checking sys/ipc.h usability... yes
checking sys/ipc.h presence... yes
checking for sys/ipc.h... yes
checking for working shared memory... no
checking whether code in malloc()ed memory is executable... no
checking whether mprotect can make malloc()ed memory executable... guessing yes
checking whether the preprocessor supports include_next... yes
checking whether system header files limit the line length... no
checking limits.h usability... yes
checking limits.h presence... yes
checking for limits.h... yes
checking threads.h usability... no
checking threads.h presence... no
checking for threads.h... no
checking wchar.h usability... yes
checking wchar.h presence... yes
checking for wchar.h... yes
checking for stdint.h... (cached) yes
checking whether limits.h has LLONG_MAX, WORD_BIT, ULLONG_WIDTH etc.... no
checking whether imported symbols can be declared weak... no
checking pthread.h usability... yes
checking pthread.h presence... yes
checking for pthread.h... yes
checking for pthread_kill in -lpthread... yes
checking for multithread API to use... posix
checking for unsigned long long int... yes
checking for long long int... yes
checking for wint_t... yes
checking whether wint_t is too small... no
checking whether stdint.h conforms to C99... yes
checking whether stdint.h predates C++11... no
checking whether stdint.h has UINTMAX_WIDTH etc.... no
checking for pid_t... yes
checking for mode_t... yes
checking for pthread_rwlock_t... yes
checking whether pthread_rwlock_rdlock prefers a writer to a reader... yes
checking for ssize_t... yes
checking for working stdnoreturn.h... yes
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating gnulib-lib/Makefile
config.status: creating avcall/Makefile
config.status: creating vacall/Makefile
config.status: creating trampoline/Makefile
config.status: creating callback/Makefile
config.status: creating callback/vacall_r/Makefile
config.status: creating callback/trampoline_r/Makefile
config.status: creating config.h
config.status: creating ffcall-version.h
config.status: executing depfiles commands
config.status: executing libtool commands
rm: libtoolT: No such file or directory
=> Modifying libtool scripts to use pkgsrc libtool
=> Modifying libtool scripts to use pkgsrc depcomp
WARNING: *** Please consider adding c++ to USE_LANGUAGES in the package Makefile.