[bsd.linker.mk] line 42: Unable to determine linker type from LD=ld

Hi All, Bryan!

Since bsd.linker.mk introduction I can't manage to create
FreeBSD base packages. The process stops at the very beginning:
-----
--- packages ---
--- packages ---
make -C /usr/src PKG_VERSION=12.0.s20170623140202 real-packages
--- real-packages ---
--- stage-packages ---
mkdir -p /tmp/install.DQDhLPed
progs=$(for prog in [ awk cap_mkdb cat chflags chmod chown cmp cp  date
echo egrep find grep id install   ln make mkdir mtree mv pwd_mkdb  rm
sed services_mkdb sh strip sysctl test true uname wc zic tzsetup
makewhatis; do  if progpath=
`which $prog`; then  echo $progpath;  else  echo "Required tool $prog
not found in PATH." >&2;  exit 1;  fi;  done);  libs=$(ldd -f "%o %p\n"
-f "%o %p\n" $progs 2>/dev/null | sort -u |  while read line; do  $line;
 if [ "$2 $3" != "not
found" ]; then  echo $2;  else  echo "Required library $1 not found."
>&2;  exit 1;  fi;  done);  cp $libs $progs /tmp/install.DQDhLPed
cp -R ${PATH_LOCALE:-"/usr/share/locale"} /tmp/install.DQDhLPed/locale
mkdir -p /usr/obj/usr/src/amd64.amd64/worldstage/
echo "#mtree 2.0" > /usr/obj/usr/src/amd64.amd64/worldstage//METALOG
cd /usr/src; COMPILER_VERSION=40000  COMPILER_FEATURES=c++11
COMPILER_TYPE=clang  COMPILER_FREEBSD_VERSION=1200006
MAKEOBJDIRPREFIX=/usr/obj  MACHINE_ARCH=amd64  MACHINE=amd64  CPUTYPE=
CC="cc -target x86_64-unknown-freebsd12.0 --sysroo
t=/usr/obj/usr/src/tmp -B/usr/obj/usr/src/tmp/usr/bin" CXX="c++  -target
x86_64-unknown-freebsd12.0 --sysroot=/usr/obj/usr/src/tmp
-B/usr/obj/usr/src/tmp/usr/bin"  CPP="cpp -target
x86_64-unknown-freebsd12.0 --sysroot=/usr/obj/usr/src/tm
p -B/usr/obj/usr/src/tmp/usr/bin"  AS="as" AR="ar" LD="ld" LLVM_LINK=""
NM=nm OBJCOPY="objcopy"  RANLIB=ranlib STRINGS=  SIZE="size"
PATH=/usr/obj/usr/src/tmp/legacy/usr/sbin:/usr/obj/usr/src/tmp/legacy/usr/bin:/usr/obj/usr/src/tmp/lega
cy/bin:/usr/obj/usr/src/tmp/usr/sbin:/usr/obj/usr/src/tmp/usr/bin:/tmp/install.DQDhLPed
 LD_LIBRARY_PATH=/tmp/install.DQDhLPed
PATH_LOCALE=/tmp/install.DQDhLPed/locale make -f Makefile.inc1
INSTALL="install -U -M /usr/obj/usr/src/amd64
.amd64/worldstage//METALOG -D /usr/obj/usr/src/amd64.amd64/worldstage"
MTREE_CMD="mtree -W" __MAKE_SHELL=/tmp/install.DQDhLPed/sh -DNO_ROOT
METALOG=/usr/obj/usr/src/amd64.amd64/worldstage//METALOG restage;
COMPILER_VERSION=40000  COMPIL
ER_FEATURES=c++11  COMPILER_TYPE=clang  COMPILER_FREEBSD_VERSION=1200006
MAKEOBJDIRPREFIX=/usr/obj  MACHINE_ARCH=amd64  MACHINE=amd64  CPUTYPE=
CC="cc -target x86_64-unknown-freebsd12.0 --sysroot=/usr/obj/usr/src/tmp
-B/usr/obj/usr/src/t
mp/usr/bin" CXX="c++  -target x86_64-unknown-freebsd12.0
--sysroot=/usr/obj/usr/src/tmp -B/usr/obj/usr/src/tmp/usr/bin"  CPP="cpp
-target x86_64-unknown-freebsd12.0 --sysroot=/usr/obj/usr/src/tmp
-B/usr/obj/usr/src/tmp/usr/bin"  AS="as"
AR="ar" LD="ld" LLVM_LINK=""  NM=nm OBJCOPY="objcopy"  RANLIB=ranlib
STRINGS=  SIZE="size"
PATH=/usr/obj/usr/src/tmp/legacy/usr/sbin:/usr/obj/usr/src/tmp/legacy/usr/bin:/usr/obj/usr/src/tmp/legacy/bin:/usr/obj/usr/src/tmp/usr/sbin:/usr/o
bj/usr/src/tmp/usr/bin:/tmp/install.DQDhLPed
LD_LIBRARY_PATH=/tmp/install.DQDhLPed
PATH_LOCALE=/tmp/install.DQDhLPed/locale rm -rf /tmp/install.DQDhLPed
sh: head: not found
make[6]: "/usr/src/share/mk/bsd.linker.mk" line 42: Unable to determine
linker type from LD=ld
*** Error code 1

Stop.
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-- 
WBR, bsam