[Rcpp-devel] Problem embedding R in Qt C++ application on Win32

[Dirk Eddelbuettel]

On 30 March 2014 at 10:02, Dirk Eddelbuettel wrote:
| 
| On 30 March 2014 at 16:45, Minh-Nhut Huynh wrote:
| | But the problem occurs when I try to deploy it on my win32 machine.
| 
| I don't work much on Windows, but I have used this repeatedly with different
| Qt releases. You should make sure you build __everything__ with the same
| compiler though: Qt, R, Rcpp, RInside, ...
| 
| The first time I did this Qt didn't yet ship as MinGW builds so I started
| from source.  They do have the appropriate configuration options.  If you'd
| rather not rebuild Qt, you may have to rebuild R though you may get away with
| the prebuild version as C interfaces are a little more tolerant. You think
| you almost certainly have to have Qt and Rcpp / RInside on the very same
| compiler build.
| 
| In short, get your toolchain ducks in a row and it will work.  But as almost
| always, it is way more painful to get these things sorted on that platform.

Gosh -- I replied to the OP who spammed Romain and me at home as well as
the list ___without being subscribed to the list___ so it never made it.
Context below.

Minh-Nhut:  Please subscribe, and use the list without CCing us. Thanks.

Dirk

  From: Minh-Nhut Huynh <minutestatistique160 at gmail.com>
  To: edd at debian.org, romain at r-enthusiasts.com, 
  	rcpp-devel at lists.r-forge.r-project.org
  Subject: Problem embedding R in Qt C++ application on Win32
  Date: Sun, 30 Mar 2014 16:45:27 +0200
  
  Hi,
  
  First of all, I want to thank you for all your great works on Integrating R
  with C++ (Rcpp, RInside, etc).
  
  They are very useful to me. Indeed, thank to RInside, Rcpp and the examples
  from the packages, I managed to call R from my Qt C++ application. It compiles
  and works very well on my 64-bit debian squeeze machine.
  
  But the problem occurs when I try to deploy it on my win32 machine.
  I also use Qt (version 5.2.1 mingw4.8 openGL) and get this error while
  debugging :

  int main(int argc, char *argv[]) {

  >>>>    RInside R(argc, argv);              // create an embedded R instance
      Signal : SIGSEGV (Segmentation fault)
        (code continues)...
  }

  when I try to print my argument variables' value, it shows :

      R : @0x28fe8c
      argc : 1
      argv : 1 element :
      argv[0] : "C:\Users\Maison\Desktop\Minh\R_embedding_win32\src\helloworld\gnu32\debug\helloworld_debug.exe"

  Why is it working on linux (where argv[0] yields "./unix/debug/helloworld_debug") and not on windows ?

  Thank you in advance,

  Looking forward to hearing from you,

  Best reagrds,

  Minh-Nhut HUYNH

  A statistician / C++ developper from Paris, France




-- 
Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com