=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Checksum SHA1 OK for stlink-1.2.0.tar.gz
=> Checksum RMD160 OK for stlink-1.2.0.tar.gz
=> Checksum SHA512 OK for stlink-1.2.0.tar.gz
===> Installing dependencies for stlink-1.2.0
=> Tool dependency automake>=1.9: found automake-1.15.1
=> Tool dependency autoconf>=2.58: found autoconf-2.69nb7
=> Tool dependency pkgconf-[0-9]*: found pkgconf-1.4.1nb1
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
===> Overriding tools for stlink-1.2.0
===> Extracting for stlink-1.2.0
===> Patching for stlink-1.2.0
===> Creating toolchain wrappers for stlink-1.2.0
===> Configuring for stlink-1.2.0
cd /var/pkgsrc/work/cross/stlink/work/stlink-1.2.0 &&  aclocal; autoheader; automake -a --foreign -i; autoconf
autoheader: error: AC_CONFIG_HEADERS not found in configure.ac
configure.ac:12: installing './compile'
configure.ac:14: installing './config.guess'
configure.ac:14: installing './config.sub'
configure.ac:8: installing './install-sh'
configure.ac:8: installing './missing'
=> Generating pkg-config file for builtin libusb1 package.
=> 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 users
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for gawk... /usr/bin/awk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking for x86_64-unknown-freebsd11-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... none
checking build system type... x86_64-unknown-freebsd11
checking host system type... x86_64-unknown-freebsd11
checking for x86_64-unknown-freebsd11-ranlib... no
checking for ranlib... ranlib
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 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 sys/mman.h usability... yes
checking sys/mman.h presence... yes
checking for sys/mman.h... yes
checking sys/poll.h usability... yes
checking sys/poll.h presence... yes
checking for sys/poll.h... yes
checking for mmap... yes
checking pkg-config is at least version 0.9.0... yes
checking for USB... no
configure: error: *** Required libusb-1.0 >= 1.0.0 not installed ***
*** Error code 1

Stop.
bmake[1]: stopped in /usr/pkgsrc/cross/stlink
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/cross/stlink