No version specified. Cowardly refusing to proceed Versions of ExtUtils::MakeMaker < 6.25 (you have 5.45) executes Build.PL if it finds one in the same directory. I can circumvent this by removing Build.PL from the this tree and deleting it from MANIFEST. Would you like me to proceed? [y] Probing for libsenna ... Path to senna-cfg? [] We were unable to find senna-cfg. This script uses mecab-config to auto-probe 1. The version string of libsenna that you are building Senna against. (e.g. 0.8.0) 2. Additional compiler flags that you may have built libsenna with, and 3. Additional linker flags that you may have build libsenna with. Since we can't auto-probe, you should specify the above three to proceed with compilation: libsenna version? []