
binary distribution. The only real requirements are a recent enough glibc and i686/x86_64 architecture.
If your Synology runs ARM, you will need to install from source as Kovid doesn't distribute ARM binaries, but it should work just fine.
You will need to install the dependencies as listed on the calibre
linux page. calibre officially supports compiling from source -- as in, it should work, but if you have problems with your distro provided calibre, you will need to prove the problem exists with the binary install or it is assumed the distro
is the problem.
See the INSTALL file in the source code for compilation instructions.
See
here for an example build script (Arch Linux PKGBUILD) that does the right things. It is pretty self-descriptive.
ArchLinuxArm at least offers a pre-built calibre for ARM, but you'd need to install ArchLinuxArm on the NAS, probably in a chroot (all those dependencies

). Raspbian (debian for Raspberry Pi) also has calibre, but they are usually quite out of date. Debian armel probably has it too, with the same proviso.
This is work, but might pay off big time: setup a calibre development environment, run armel in a VM, and spin off a frozen build of calibre for ARM. It would install with minimal, bundled dependencies, unlike going to the effort of a chroot.
You could distribute it as an unofficial solution for all those Synology owners, as this has come up before.