Hi, In debian/control, Build-Depends: libluajit-5.1-dev [i386 amd64 kfreebsd-i386 armel armhf powerpc powerpcspe mips mipsel] is wrong, as https://buildd.debian.org/status/package.php?p=luajit&suite=sid says below archs are built.
amd64 arm64 armel armhf i386 mips64el mipsel ppc64el hurd-i386 kfreebsd-amd64 kfreebsd-i386 powerpc ppc64 So, it should be libluajit-5.1-dev [amd64 arm64 armel armhf i386 mips64el mipsel ppc64el hurd-i386 kfreebsd-amd64 kfreebsd-i386 powerpc ppc64] and so on. And it seems that it should check whether its arch has libluajit-5.1-dev or not. -- Regards, Hideki Yamane henrich @ debian.org/iijmio-mail.jp