[Rcpp-devel] R package: minqa (fwd)

The answer is quite interesting.  I had carefully arranged the
objective function passed to the C++ code so that it did not require
any arguments.  That way, you can just evaluate it rather than needing
to go through the complexities of arranging a function call with
arguments in C code.  When the -std=c++0x flag is set the Rcpp package
allows what are called varadic arguments to methods (an unspecified
number of arguments that are handled recursively) but without it you
can only specify 1, 2, ..., 5 arguments.  Strangely enough it doesn't
allow zero arguments, which is the simplest case.

Romain: Do you want to add (Rcpp::Function)() to the code_bloat
section or shall I?

In the short term I will rewrite the R and C++ code so that the R
function takes one argument and check in a new version to the R-forge
archive.

On Mon, Mar 15, 2010 at 10:47 AM, Douglas Bates<bates at stat.wisc.edu>  wrote:

Interestingly, I discovered the same thing this morning when I tried
to install on my office computer.

I was experimenting with some of the more sophisticated capabilities
in the Rcpp package, which require the -std=c++0x flag to the
compiler.  I had it set for the computer at home but not at work.
Certain methods in the Rcpp::Function class are not available without
the flag, as I realized this morning.

I'll check how to call an R function without arguments in Rcpp if the
-std=c++0x flag is not set and commit a fix.

2010/3/15 Katharine Mullen<kmullen at nist.gov>:

FYI

---------- Forwarded message ----------
Date: Mon, 15 Mar 2010 11:13:33 -0400 (EDT)
From: Katharine Mullen<kmullen at nist.gov>
To: Arne Henningsen<arne.henningsen at googlemail.com>
Subject: Re: R package: minqa

Dear Arne,

Interesting.  I get the same error.  Thanks to the efforts of Doug Bates the
package is undergoing renovations; I expect that this problem will be
possible to remove soon.

Thank you for testing, and informing us of the issue.

best regards,
Kate

--
Katharine Mullen
Structure Determination Methods Group, Ceramics Division
National Institute of Standards and Technology (NIST)
100 Bureau Drive, M/S 8520
Gaithersburg, MD, 20899, USA
phone: 001 301 975 6890
email: Katharine.Mullen at nist.gov

On Mon, 15 Mar 2010, Arne Henningsen wrote:

Dear Katharine,

I tried to install the "optimx" package from R-Forge. This requires
the installation of your "minqa" package but I was not able to install
it, because the compilation stops with the error message "no match for
call to ?(Rcpp::Function) ()?" (the full output is attached below). My
operating system is Ubuntu 8.10 (32 bit) and I use R version 2.10.1
(2009-12-14). I can install the "stable" version of the package from
CRAN. Any ideas?

Best wishes from Copenhagen,
Arne

-------------------------------------------------------------------------
R>  install.packages("minqa", repos="http://R-Forge.R-project.org")
Warning in install.packages("minqa", repos =
"http://R-Forge.R-project.org") :
  argument 'lib' is missing: using '/usr/local/lib/R/site-library'
trying URL 'http://R-Forge.R-project.org/src/contrib/minqa_1.1.1.tar.gz'
Content type 'application/x-gzip' length 47202 bytes (46 Kb)
opened URL
==================================================
downloaded 46 Kb

* installing *source* package ?minqa? ...
** libs
gfortran   -fpic  -g -O2 -c altmov.f -o altmov.o
gfortran   -fpic  -g -O2 -c bigden.f -o bigden.o
gfortran   -fpic  -g -O2 -c biglag.f -o biglag.o
gfortran   -fpic  -g -O2 -c bobyqa.f -o bobyqa.o
gfortran   -fpic  -g -O2 -c bobyqb.f -o bobyqb.o
gfortran   -fpic  -g -O2 -c lagmax.f -o lagmax.o
g++ -I/usr/share/R/include
-I/usr/local/lib/R/site-library/Rcpp/lib -fpic  -g -O2 -c minqa.cpp -o
minqa.o
minqa.cpp: In function ?void calfun_(const int*, const double*, double*)?:
minqa.cpp:24: error: no match for call to ?(Rcpp::Function) ()?
make: *** [minqa.o] Error 1
ERROR: compilation failed for package ?minqa?
* removing ?/usr/local/lib/R/site-library/minqa?
* restoring previous ?/usr/local/lib/R/site-library/minqa?

The downloaded packages are in
       ?/tmp/RtmpljUfdY/downloaded_packages?
Warning message:
In install.packages("minqa", repos = "http://R-Forge.R-project.org") :
  installation of package 'minqa' had non-zero exit status
-------------------------------------------------------------------------


--
Arne Henningsen
http://www.arne-henningsen.name