=> Bootstrap dependency digest>=20010302: found digest-20121220 => Bootstrap dependency fetch-[0-9]*: found fetch-1.8nb1 => Checksum SHA1 OK for optipng-0.7.4.tar.gz => Checksum RMD160 OK for optipng-0.7.4.tar.gz ===> Installing dependencies for optipng-0.7.4nb1 => Build dependency nbpatch-[0-9]*: found nbpatch-20100124 => Build dependency checkperms>=1.1: found checkperms-1.11 => Full dependency zlib>=1.2.3: found zlib-1.2.7 => Full dependency png>=1.6.0nb1: found png-1.6.1beta05 ===> Overriding tools for optipng-0.7.4nb1 ===> Extracting for optipng-0.7.4nb1 ===> Patching for optipng-0.7.4nb1 => Applying pkgsrc patches for optipng-0.7.4nb1 ===> Creating toolchain wrappers for optipng-0.7.4nb1 ===> Configuring for optipng-0.7.4nb1 => Checking for portability problems in extracted files Checking for gcc... Checking for system libpng... Checking for system zlib...