[Rcpp-devel] Using "Rcpp Modules" under Solaris fails to load.
On Tue, 2015-03-17 at 09:42 -0500, Dirk Eddelbuettel wrote:
Hi Marius,
On 17 March 2015 at 15:26, Marius Wirths wrote:
| Hello everybody,
|
| this is my very first post on this mailing list so if I have made any mistakes
| please feel free to point me to it.
|
| I have written a package for R. This package internally uses Rcpp-Modules.
Cool. So do quite a few other packages on CRAN.
| However my package got rejected from CRAN due to the fact that my package can
| not be loaded under Solaris. So, i set up a virtual machine with Solaris 10 to
| find the error in my code. For now it appears to me, that it is not possible to
| use Rcpp-Modules under Solaris using Oracle Studio 12 compilers (which are used
| by CRAN as far as i know).
I just glanced at two of mine. Both are fine on r-patched-solaris-x86 but
fail on r-patched-solaris-sparc due to a compiler issue when dealing with
Boost headers via the BH package. I have more package with Modules on CRAN
but don't have time now to check all of them.
| I created a minimal example through:
|
| "Rcpp.package.skeleton("somename", module=TRUE)"
|
| I removed every file from the "src"-folder except the "Num.cpp" file and
| reduced the content of the "zzz.R" file located in the "R" folder to the single
| line "loadModule("NumEx", TRUE)".
| Compiling this minimal example with the latest version of R using the Oracle
| Studio 12 compilers results in the output given below. Also i have used the
| following enviroment variables (which are used by CRAN too):
[...]
| Output generated through "R CMD INSTALL ./somename" :
|
| # R CMD INSTALL ./somename
[...]
| I have no idea how to solve this problem. Using the "Rcpp.package.skeleton"
| without "module=TRUE" compiles just fine (except for one warning) and can be
| loaded:
[...]
| If you need any further informations to help me please feel free to ask.
It is a tricky situation. I don't quite know how to say this -- nobody
actively working with Rcpp has access to Solaris or interest in it (maybe
Martyn Plummer excepted). So right now you are effectively being held
hostage over a build failure on an architecture nobody uses.
Well that is one interpretation. Another one is that as a testing platform Solaris exposes weaknesses in C++ code that are not found by other platforms due to its fastidious interpretation of the C++98 standard. For example, Solaris Studio distinguishes between functions with C and C ++ linkage. In Marius's test package this generates multiple warnings and may be the cause of the missing symbol, which demangles as: Rcpp::standard_delete_finalizer<Num>(__type_0*) As you can see, __type_0 is just a placeholder, so something went wrong with the linkage. Marius, if you mail me your test package I will see what it gives me. Martyn
You could stop using Modules. Or you could add a LinkingTo: BH as your package would fail like mine. At least that masks the other issue ;-) Dirk
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