Re: [igraph] building igraph in R using a local copy of the C library

[Jason Cory Brunson]

Thanks, Gábor.

I've reached my first hangup. Here's what i've done so far (Mac OS X 10.9):

1. Fork both igraph and rigraph repositories.
2. Clone both to local directories.
3. Edit the .gitmodules file in the rigraph directory to point to the 
adjacent igraph directory ("../igraph"), and update ("git submodule 
update --init").
4. (After installing Automake) make ("make").

So far (as i can tell), so good. Here's what threw an error:

5. In R, with devtools, in the rigraph directory, document the package 
(which is necessary to then load it into the session, e.g. via 
load_all): "document()". Here's the error, with the few output lines 
preceding it:

configure: creating ./config.status
config.status: creating src/Makevars.tmp
config.status: creating src/Makevars
config.status: src/Makevars is unchanged
config.status: creating src/config.h
config.status: src/config.h is unchanged
ERROR: a 'NAMESPACE' file is required
* removing 
‘/private/var/folders/pg/fjg8r4fj5v33zqmwptf9mfg80000gn/T/Rtmpm4Uw4x/devtools_install_d9511fcb3c02/igraph’
Error: Command failed (1)

The rigraph directory has no NAMESPACE file—and my understanding is that 
the NAMESPACE file should be created, not required, by document(). As an 
experiment, i copied the NAMESPACE file from the current release of 
igraph into the rigraph directory and tried "document()", but received 
"ERROR: compilation failed for package ‘igraph’".

Thanks again,

Cory

On 12/13/15 6:25 PM, Gábor Csárdi wrote:
> Hi,
>
> the C igraph library is a submodule in the dev tree of the R package.
> So one thing you could do is forking both repos, and point the
> submodule in the forked R repo to the forked C repo.
>
> The build process is far from trivial, unfortunately, but we can help
> if you get stuck. You can start it by just issuing 'make' in the R
> package repo root.
>
> Gabor
>
> On Fri, Dec 11, 2015 at 8:27 PM, Jason Cory Brunson <address@hidden> wrote:
> > Hi,
> >
> > I would like to be able to build the igraph package in R using a local copy
> > of the C library in a sandbox directory (i.e. not where libraries are
> > installed by default), for the purpose of writing additional functions in
> > the C library to call in R (python would be OK too).
> >
> > A friend with more programming experience tried to help me, but ran into
> > trouble early on. So i wonder if there's a straightforward sequence of steps
> > i should take, or if a walkthrough is posted somewhere—or if this is simply
> > not something someone not fluent in C should be doing.
> >
> > I did not see anything in the list archives. Thanks for any help.
> >
> > Cory
> >
> > _______________________________________________
> > igraph-help mailing list
> > address@hidden
> > https://lists.nongnu.org/mailman/listinfo/igraph-help
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