=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Checksum SHA1 OK for pngquant-2.12.0-src.tar.gz
=> Checksum RMD160 OK for pngquant-2.12.0-src.tar.gz
=> Checksum SHA512 OK for pngquant-2.12.0-src.tar.gz
===> Installing dependencies for pngquant-2.12.0
=> Tool dependency gmake>=3.81: found gmake-4.1nb4
=> Tool dependency nbpatch-[0-9]*: found nbpatch-20151107
=> Tool dependency pkgconf-[0-9]*: found pkgconf-1.4.1nb1
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency libimagequant>=2.8.2: found libimagequant-2.12.1
=> Full dependency png>=1.6.0nb1: found png-1.6.34
=> Full dependency lcms2>=2.2: found lcms2-2.8
===> Overriding tools for pngquant-2.12.0
===> Extracting for pngquant-2.12.0
===> Patching for pngquant-2.12.0
=> Applying pkgsrc patches for pngquant-2.12.0
===> Creating toolchain wrappers for pngquant-2.12.0
===> Configuring for pngquant-2.12.0
./configure: 8: Syntax error: word unexpected (expecting ")")
*** Error code 2

Stop.
bmake[1]: stopped in /usr/pkgsrc/graphics/pngquant
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/graphics/pngquant