=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for pdf-reader-2.4.2.gem
=> Checksum RMD160 OK for pdf-reader-2.4.2.gem
=> Checksum SHA512 OK for pdf-reader-2.4.2.gem
===> Installing dependencies for ruby25-pdf-reader-2.4.2
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency ruby25-Ascii85>=1.0.0: found ruby25-Ascii85-1.1.0
=> Full dependency ruby25-rc4>=0: found ruby25-rc4-0.1.5
=> Full dependency ruby25-hashery>=2.0<3: found ruby25-hashery-2.1.2
=> Full dependency ruby25-afm>=0.2.1<0.3: found ruby25-afm-0.2.2
=> Full dependency ruby25-ttfunk>=0: found ruby25-ttfunk-1.7.0
=> Full dependency ruby25-base>=2.5.9: NOT found
=> Verifying /nonexistent for ../../lang/ruby25-base
make[1]: don't know how to make /nonexistent. Stop

make[1]: stopped in /usr/pkgsrc/lang/ruby25-base
*** Error code 2

Stop.
make: stopped in /usr/pkgsrc/print/ruby-pdf-reader