[SOLVED] Compiling unison

Sefyir · 10-15-2016, 09:07 PM

Unison is great, except when you can't install the same version on two different systems

Raspberry Pi with Rasbian - Debian Jessie
Linux Mint 18 Cinnamon - Ubuntu 16.04

Linux Mint

Code:

unison -version
unison version 2.48.3

Raspberry Pi

Code:

unison -version
unison version 2.40.102

Ideally, I'd like to install using the package manager. However, I'm currently attempting to compile on the raspberry pi to get 2.48

I've obtained the source from here and ran as the directions indicate - opam

Code:

sudo apt-get install ocaml opam
make UISTYLE=text

However, it fails trying to find etags (according to sh), but I can't seem to find how to install it, some guides are 2 decades old - but apparently it's related to emacs somehow?

Code:

if [ -f `which etags` ]; then \
    etags *.mli */*.mli *.ml */*.ml */*.m *.c */*.c *.txt \
          ; fi 
/bin/sh: 2: etags: not found
Makefile:347: recipe for target 'tags' failed
make[1]: [tags] Error 127 (ignored)
make[1]: Leaving directory '/home/foo/src'

I don't care about the newest version here - just trying to get identical version so I can sync my files

c0wb0y · 10-15-2016, 10:08 PM

apt-get, aptitude may help you find which package provides which binary.

pan64 · 10-16-2016, 04:48 AM

probably you may try to compile it yourself: http://www.crutzi.info/unison/binary/armel but probably you need to use 2.40 on ubuntu too.
you need to install the package containing etags to be able to continue that

ondoho · 10-16-2016, 05:33 AM

Sefyir, please help me to remember in which situation you need unison on both machines?
iirc, it was when using the ssh feature?
in any case, i had the same problem.
what i do now, i locally mount the remote location with sshfs, and then unison can use it as a local folder, no need to have it installed on the remote machine.
hope this helps.

Sefyir · 10-16-2016, 11:19 AM

Quote:

Originally Posted by pan64

probably you may try to compile it yourself: http://www.crutzi.info/unison/binary/armel but probably you need to use 2.40 on ubuntu too.
you need to install the package containing etags to be able to continue that

Thanks for this link. The below quote helped

Quote:

It might fail with an error, but the unison binary should have been build successfully already.

After examining it, it turns out the binary was compiled anyways after the failure and works fine!