[Rcpp-devel] Compiling RcppArmadillo through R CMD SHLIB onWindows XP
Savitsky, Terrance
savitsky at rand.org
Tue Dec 14 17:50:08 CET 2010
I should've checked before replying; this solution (including cstdio header) doesn't work. Where the 'snprintf' error appears is after the following:
C:/PROGRA~1/R/R-212~1.0/library/RcppArmadillo/include/armadillo_bits/format-Wrap.hpp: error: 'snprintf' is not a member of 'std'.
Stepping back, I view your terrific work as focused to reduce the coding overhead / technical burden of coding in C++ for R, given that the primary reason for such work is to improve run speed and not to introduce new functionality. This work could ultimately evolve into a backdoor compiled version of R what with the smooth sugar-based syntax. I make this point because that's why I'm hueing closely to the examples; I assume that the headers and namespaces that you include also scoop up the common C++ headers and namespaces. So I'm working to understand the by-design most productive way to build code in RcppArmadillo for package release.
Then, back to my original question, using the bla.cpp of Romain, does this problem not duplicate under Debian Linux or OS X? Is it a Windows problem - somehow a reference from within RcppArmadillo.h not working under the Rtools toolchain?
Thanks.
-----Original Message-----
From: Dirk Eddelbuettel [mailto:edd at debian.org]
Sent: Tuesday, December 14, 2010 7:56 AM
To: Savitsky, Terrance
Cc: rcpp-devel at r-forge.wu-wien.ac.at
Subject: Re: [Rcpp-devel] Compiling RcppArmadillo through R CMD SHLIB onWindows XP
On 13 December 2010 at 12:23, Savitsky, Terrance wrote:
| Hello Romain, Thank you for your expertise. I will use the documentation to make a package. At this point, however, I want to see every method I've tried work, however, so that I understand any and all differences I might expect for developing with Rcpp/RcppArmadillo under Windows XP. So I followed the process (using Verbose=TRUE under an inline invocation) with the bla.cpp you included for me to obtain PKG_LIBS and CLINK-CPPFLAGS values. When I return to my cygwin bash shell session and attempt to compile and link bla.cpp, it does now seem to properly source my #include<RcppArmadillo.h>. statement. I do, however, receive the following error: 'snprintf' is not a member of 'std'. So I guess I'm missing a header linked to std::snprintf. The only thing that comes to mind is that I have somehow corrupted my installation of Rcpp. I would appreciate any insight you would offer.
snprintf is defined in the cstdio header.
Dirk
|
| Thanks, Terrance Savitsky
|
| -----Original Message-----
| From: Romain Francois [mailto:romain at r-enthusiasts.com]
| Sent: Sunday, December 12, 2010 3:58 AM
| To: Savitsky, Terrance
| Cc: rcpp-devel at r-forge.wu-wien.ac.at
| Subject: Re: [Rcpp-devel] Compiling RcppArmadillo through R CMD SHLIB on Windows XP
|
| Le 12/12/10 04:03, Savitsky, Terrance a écrit :
| > Hello,
| >
| > I employ a variant of the following lines in a cygwin bash session in
| > Windows XP to compile my .cpp file.
| >
| > $ export PKG_LIBS=`Rscript.exe -e "RcppArmadillo:::LdFlags()"`
| >
| > $ export PKG_CXXFLAGS=`Rscript.exe -e "RcppArmadillo:::CxxFlags()"`
| >
| > $ R CMD SHLIB fastLm.cpp
| >
| > I receive the following compile error:
| >
| > G++ -I"C:/PROGRA~1/R/R-212~1.0/include" Rscript.exe -e
| > "RcppArmadillo:::CxxxFlags()" -O2 - Wall -pedantic - c fastLm.cpp - o
| > fastLm.o
| >
| > G++:Rscript.exe: No such file or directory
| >
| > fastLm.cpp:1:27: error: RcppArmadillo.h: No such file or directory
| >
| > fastLm.cpp:2: error: 'SEXP' does not have name a type
| >
| > I've included the R bin directory containing Rscript.exe to the PATH
| > environment statement. Should one use a different syntax for windows to
| > capture RcppArmadillo dependencies? (Fyi, I am able to build using
| > inline, though my code is 600 lines and I will have multiple versions,
| > so using the old approach may provide the most modular de-bugging
| > approach vs. re-installing a package as I add files).
| >
| > Thanks, Terrance Savitsky
|
| Hello,
|
| I would strongly advise you to make it a package, especially if you deal
| with multiple files, etc ...
|
| One thing you might want to consider is to use the verbose argument of
| cxxfunction, so that inline shows you how it runs the show.
|
| For example:
|
| require(RcppArmadillo)
| require(inline)
|
| f <- cxxfunction( , '
| arma::mat x(2,2) ;
| NumericMatrix res = wrap( x + x ) ;
| return res ;
| ', plugin = "RcppArmadillo", verbose = TRUE )
|
| When you run this, you'll see what inline does with the PKG_LIBS, etc ...:
|
| For example, it shows me this on OSX:
|
| romain at naxos ~/svn/rcpp/pkg $ Rscript bla.R
| Le chargement a nécessité le package : RcppArmadillo
| Le chargement a nécessité le package : Rcpp
| Le chargement a nécessité le package : methods
| Le chargement a nécessité le package : inline
| >> setting environment variables:
| PKG_LIBS =
| /Library/Frameworks/R.framework/Versions/2.12/Resources/library/Rcpp/lib/x86_64/libRcpp.a
| $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS)
|
| >> LinkingTo : RcppArmadillo, Rcpp
| CLINK_CPPFLAGS =
| -I"/Library/Frameworks/R.framework/Versions/2.12/Resources/library/RcppArmadillo/include"
| -I"/Library/Frameworks/R.framework/Versions/2.12/Resources/library/Rcpp/include"
|
|
| >> Program source :
|
| 1 :
| 2 : // includes from the plugin
| 3 : #include <RcppArmadillo.h>
| 4 : #include <Rcpp.h>
| 5 :
| 6 :
| 7 : #ifndef BEGIN_RCPP
| 8 : #define BEGIN_RCPP
| 9 : #endif
| 10 :
| 11 : #ifndef END_RCPP
| 12 : #define END_RCPP
| 13 : #endif
| 14 :
| 15 : using namespace Rcpp;
| 16 :
| 17 :
| 18 : // user includes
| 19 :
| 20 :
| 21 : // declarations
| 22 : extern "C" {
| 23 : SEXP file313a14a1( ) ;
| 24 : }
| 25 :
| 26 : // definition
| 27 :
| 28 : SEXP file313a14a1( ){
| 29 : BEGIN_RCPP
| 30 :
| 31 : arma::mat x(2,2) ;
| 32 : NumericMatrix res = wrap( x + x ) ;
| 33 : return res ;
| 34 :
| 35 : END_RCPP
| 36 : }
| 37 :
| 38 :
| Compilation argument:
| /Library/Frameworks/R.framework/Resources/bin/R CMD SHLIB
| file313a14a1.cpp 2> file313a14a1.cpp.err.txt
| g++ -arch x86_64 -I/Library/Frameworks/R.framework/Resources/include
| -I/Library/Frameworks/R.framework/Resources/include/x86_64
| -I/usr/local/include
| -I"/Library/Frameworks/R.framework/Versions/2.12/Resources/library/RcppArmadillo/include"
| -I"/Library/Frameworks/R.framework/Versions/2.12/Resources/library/Rcpp/include"
| -fPIC -g -O3 -Wall -pipe -c file313a14a1.cpp -o file313a14a1.o
| g++ -arch x86_64 -dynamiclib -Wl,-headerpad_max_install_names -undefined
| dynamic_lookup -single_module -multiply_defined suppress
| -L/usr/local/lib -o file313a14a1.so file313a14a1.o
| /Library/Frameworks/R.framework/Versions/2.12/Resources/library/Rcpp/lib/x86_64/libRcpp.a
| -L/Library/Frameworks/R.framework/Resources/lib/x86_64 -lRlapack
| -L/Library/Frameworks/R.framework/Resources/lib/x86_64 -lRblas
| -lgfortran -F/Library/Frameworks/R.framework/.. -framework R
| -Wl,-framework -Wl,CoreFoundation
|
| Then you can just hardcode PKG_LIBS and CLINK_CPPFLAGS (or use
| PKG_CPPFLAGS if you prefer).
|
|
|
| Another tip with inline is that you can read the code from a file, e.g :
|
| f <- cxxfunction( ,
| paste( readLines("bla.cpp"), collapse = "\n") ,
| plugin = "RcppArmadillo", verbose = TRUE )
|
| This way you can import multiple files, etc ... while keeping the C++
| code out of the R code. I would still however very strongly recommend
| you to make a package. It is well documented, easy and it will save you
| some time.
|
| Romain
|
| --
| Romain Francois
| Professional R Enthusiast
| +33(0) 6 28 91 30 30
| http://romainfrancois.blog.free.fr
| |- http://bit.ly/fT2rZM : highlight 0.2-5
| |- http://bit.ly/gpCSpH : Evolution of Rcpp code size
| `- http://bit.ly/hovakS : RcppGSL initial release
|
|
|
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