[erlang-bugs] reltool dependencies ignored

[Michael Truog]

Hi Siri,

I know the situation there is a bit unusual.  The external CloudI dependencies are moved so that the "cloudi_x_" prefix is added to all the external Erlang application names, their modules, and their header files.  The external dependency directory names already have the "cloudi_x_" prefix to satisfy include_lib usage within the modules (so that means external CloudI dependencies that depend on each other, in a way that uses a header file with -include_lib).  This is all done with the script at https://github.com/okeuday/reltool_util/blob/master/scope with the command line at https://github.com/CloudI/CloudI/blob/develop/src/Makefile.am#L7-L66 (i.e., atoms are selectively changed within the source code, along with the files being moved).  However, that process doesn't impact how the external CloudI dependencies work.  The prefix is added to simulate a namespace concept which doesn't exist in Erlang to avoid any potential conflicts when CloudI shares the Erlang VM with other 
Erlang applications.

That is unusual, but the reltool usage is the same either way, its just an addition of a prefix for referencing the names, as they are now.  The compilation process makes sure the prefix is added, so the external dependency files do change to satisfy the compilation, testing and release requirements.  While it would be natural to assume this process is at fault for the reltool issue, I am sure that is not the case.  You should be able to see this if you do a "./configure && make" of the root src directory, since that will make sure the files are as expected.

Thanks,
Michael

On 05/08/2014 01:05 AM, Siri Hansen wrote:
> Hi Michael!
>
> I haven't spent a lot of time on this yet, but I was just trying to find the chain of dependencies that lead to syntax_tools, but I find it a bit hard I would appreciate some help...
>
> I found one way but it didn't really make sense:
>
> reltool.config includes application 'cloudi_service_db_cassandra', and in cloudi_service_db_cassandra.app.src.in <http://cloudi_service_db_cassandra.app.src.in> you have {applications,[...,cloudi_x_erlang_cassandra,...]}
>
> Under the directory external/cloudi_x_erlang_cassandra/src/ I then find erlang_cassandra.app.src, which indeed has {applications,[...,syntax_tools,...]} - but this is obviously an application named 'erlang_cassandra' and not 'cloudi_x_erlang_cassandra' as listed above... so how does this work?
>
> Regards
> /siri
>
>
> 2014-05-01 19:42 GMT+02:00 Michael Truog <mjtruog@REDACTED <mailto:mjtruog@REDACTED>>:
>
>     Hi,
>
>     I believe I found a bug that causes reltool to ignore dependencies when generating a release.  I am not sure where the problem is within reltool, but I at least have a way to demonstrate it. https://github.com/CloudI/CloudI/blob/develop/src/reltool.config.in#L78-L89 shows lines that are unnecessary within the reltool.config file. The dependencies mentioned there should be found automatically by reltool.  If you remove those lines and do a make install (after the autogen.sh and configure steps) you will see the dependencies mentioned in these lines are not there.
>
>     Thanks,
>     Michael
>     _______________________________________________
>     erlang-bugs mailing list
>     erlang-bugs@REDACTED <mailto:erlang-bugs@REDACTED>
>     http://erlang.org/mailman/listinfo/erlang-bugs
>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://erlang.org/pipermail/erlang-bugs/attachments/20140508/74493d62/attachment.htm>