Re: Bug#870398: sks: non-deterministically FTBFS with "Error: Unbound module Bdb"

[Stéphane Glondu <glondu@debian.org>]

On 01/08/2017 20:15, Stéphane Glondu wrote:
>> Take a look at the buildd results for 1.1.6-5 and 1.1.6-6:
>>
>> https://buildd.debian.org/status/logs.php?pkg=sks&ver=1.1.6-5&suite=sid
>> https://buildd.debian.org/status/logs.php?pkg=sks&ver=1.1.6-6&suite=sid
>>
>> in 1.1.6-5, mips, mipsel, and sh4 all fail with:
>>
>> ---------
>> File "bdbwrap.mli", line 4, characters 13-22:
>> Error: Unbound module Bdb
>> Makefile:360: recipe for target 'bdbwrap.cmi' failed
>> make[2]: *** [bdbwrap.cmi] Error 2
>> make[2]: *** Waiting for unfinished jobs....
>> ---------
>>
>> (but armel and i386 build OK)
>>
>> While with 1.1.6-6, we see the same failures on armel and i386 (but not on mips!)
>>
>> There should have been no change with the ocaml Bdb bindings between
>> these different builds.
>>
>> I suspect something weird is happening with ocaml, but i'm not sure
>> what steps to take for debugging, so i'm flagging this as "help" -- if
>> the OCaml maintainers have any suggestions, i'm all ears.
> 
> It looks like the build process is not parallel-safe. Try running dh
> with --no-parallel.

Indeed, bdbwrap.cmi depends on bdb/bdb.cmi, but this dependency cannot
be inferred given the way the build system is designed. I would suggest
to just disable parallel build.

Cheers,

-- 
Stéphane