Thanks for the quick reply! I edited the Jamfile to work similarly. From
what I understand, this helps in the situation when I compile with VW
and then decide to compile without it (or vice versa).
The main problem is still there though -- even though I don't change the
compilation flags and actually make a change in the source files, it is
sometimes ignored by bjam. But I think I made some mistake in the
Jamfile and it interacts badly with my #ifdef statements (maybe it isn't
passed to all the relevant files). Anyway, thanks for the help, I'll try
to figure it out; in the meantime, we can use the version with these
statements commented out.
Best,
Ales
Dne 2.7.2012 13:05, Kenneth Heafield napsal(a):
> Hi,
>
> This is a long-standing bug in bjam and many build systems. The issue
> is that it analyzes the current build graph, checks that timestamps are
> consistent with that graph, and assumes the files match the current
> build if so. If you had a Makefile, ran make, edited the Makefile to
> change commands, and ran make again, it would think the build is complete.
>
> It started causing trouble when people built with one set of language
> models then built with another, so I put a kludge in that saves the
> relevant command line options to a file and forces a rebuild.
>
> In response to your mail, I factored the kludge into a function.
> Please git pull then look at the tail end of moses/src/LM/Jamfile:
>
> path-constant LM-LOG : bin/lm.log ;
>
> local current = ;
> for local i in srilm irstlm randlm {
> local optval = [ option.get "with-$(i)" ] ;
> if $(optval) {
> current += "--with-$(i)=$(optval)" ;
> }
> }
>
> current = $(current:J=" ") ;
> current ?= "" ;
>
> always-if-changed $(LM-LOG) $(current) : Factory.o LM ;
>
> You can also look at the end of jam-files/sanity.jam .
>
> Kenneth
>
> On 07/02/2012 11:33 AM, Ales Tamchyna wrote:
>> Hi,
>>
>> we are implementing phrase sense disambiguation in Moses, which requires
>> linking it with Vowpal Wabbit. We have been struggling with bjam,
>> encountering a bunch of random errors and unexpected behavior:
>>
>> * bjam seems to ignore changes sometimes, it only says "found X
>> targets...", but doesn't update (yet the moses binary timestamp changes
>> -- it doesn't include the new modifications though).
>>
>> * It seems that the final build is sometimes erroneous, resulting in
>> random crashes in places that have nothing to do with the code changes I
>> made (removing all 'bin' directories and doing bjam -a seems to help).
>>
>> * It looks like I was able to get rid of these errors by removing all
>> occurrences of #ifdef HAVE_VW and #endif from my code (but now normal
>> users can't build this branch).
>>
>> I'm wondering if a bjam expert (Ken? :) could take a look at the
>> attached Jamfile and let me know if I did something wrong. My code is in
>> the damt_phrase branch.
>>
>> Thanks!
>>
>> Ales Tamchyna
>>
>>
>> _______________________________________________
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