[racket] Problem with mzc v.5.1.1 and contracts

From: Timur Sufiev (tsufiev at jet.msk.su)
Date: Thu Aug 18 02:40:12 EDT 2011

On 17.08.2011 16:58, Matthew Flatt wrote:
Thanks, Matthew, it works!
> I think that "ihash.scm" is being compiled twice: once when you use
> `mzc' on "ihash.scm" and again when using `mzc' on
> "config-enumerators.scm", assuming that you move the ".zo" files into
> place only after compiling both of them. Unfortunately, due to the way
> contracts expand, compiling a source file multiple times does not
> necessarily produce the example same result.
>
> It's simpler to use `raco make' (or `mzc --make' if you really want to
> use `mzc' for some reason) on just your main program file. The `raco
> make' command will automatically compile dependencies and leave ".zo"
> files in the right place (i.e., in a "compiled" subdirectory).
>
> At Tue, 16 Aug 2011 15:46:38 +0400, Timur Sufiev wrote:
>> Hi!
>>
>> I'm having a problem with byte-compiled modules and contracts. There are
>> 2 files, ihash.scm and config-enumerators.scm, both are compiled with
>>
>> PLTCOLLECTS=/opt/dozor/racket/lib/racket/collects:/home/timur/develop/projects/d
>> ozor/build
>> LD_LIBRARY_PATH=/opt/dozor/racket/lib:$$LD_LIBRARY_PATH
>> /opt/dozor/racket/bin/mzc -z -d . $<
>> (working string from Makefile).
>>
>> Small piece of ihash.scm:
>>
>> #lang racket
>>
>> (define (ihash? ht)
>>     (and (hash? ht) (let ((index (hash-ref ht #f #f)))
>>                       (number? index))))
>>
>> (provide/contract (ihash-get (->  ihash? any/c any/c any/c)))
>>
>> (define (ihash-get ihash key default)
>>     (let ((value (hash-ref ihash key #f)))
>>       (if value (cdr value) default)))
>>
>> Small piece of config-enumerators.scm:
>>
>> #lang racket
>> (require (lib "ihash.scm" "lib"))
>> (define (section-replicable? section)
>>     (car (ihash-get section 'replicable? '(#f))))
>>
>> Before compilation both scm-s are put to
>> /home/timur/develop/projects/dozor/build/lib, compiled and then put to
>> /opt/dozor/smap/lib/lib/compiled. $HOME/.racketrc has the next command:
>> (current-library-collection-paths  (list* "/opt/dozor/smap/lib"
>> (current-library-collection-paths)))
>> Then i run /opt/dozor/racket/bin/mzscheme,
>> type (require (lib "config-enumerators.scm" "lib")) and get the
>> following error:
>> link: module mismatch, probably from old bytecode whose dependencies
>> have changed: variable not provided (directly or indirectly and at the
>> expected position) from module: "/opt/dozor/smap/lib/lib/ihash.scm"
>> accessed from module: "/opt/dozor/smap/lib/lib/config-enumerators.scm"
>> at source phase level: 0 in: provide/contract-contract-id-ihash-get.14
>>
>> Any ideas?
>>
>> -- 
>>
>> Best regards,
>> Sufiev Timur
>>
>> _________________________________________________
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-- 
С уважением,
Суфиев Тимур



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