As of man-db-2.6.0.2, the command autoreconf -fi produces invalid configure:

./configure: line 37157: syntax error near unexpected token `libpipeline,'
./configure: line 37157: `PKG_CHECK_MODULES(libpipeline, libpipeline >= 1.1.0)'

Note that the build process does not involve any third-party patches.

Valid HTML 4.01 Strict Valid CSS!