USE_GNU_TOOLS -> USE_TOOLS awk -> gawk m4 -> gm4 make -> gmake sed -> gsed yacc -> bison
in the process. (More information on tech-pkg.) Bump PKGREVISION and BUILDLINK_DEPENDS of all packages using libtool and installing .la files. Bump PKGREVISION (only) of all packages depending directly on the above via a buildlink3 include.