[Rcpp-devel] Request for help with compiling Rcpp example
Dirk Eddelbuettel
edd at debian.org
Fri Oct 14 16:39:16 CEST 2011
Hi Kent,
On 14 October 2011 at 16:00, Jian Kang wrote:
| Hi, Dirk,
|
| Sorry for delay.
|
| I tried to install the R and Rtools again, and run the program again, then it
| works.
Excellent!
| But here is some warnings, I am not sure whether this is OK in the future.
|
| Compilation argument:
| C:/R/Rsoft/bin/i386/R CMD SHLIB file7e446574.cpp 2>
| file7e446574.cpp.err.txt
| g++ -I"C:/R/Rsoft/include" -I"C:/R/Rsoft/library/Rcpp/include" -O2
| -Wall -c file7e446574.cpp -o file7e446574.o
| g++ -shared -s -static-libgcc -o file7e446574.dll tmp.def file7e446574.o C:/R/
| Rsoft/library/Rcpp/lib/i386/libRcpp.a -LC:/R/Rsoft/bin/i386 -lR
| cygwin warning:
| MS-DOS style path detected: C:/R/Rsoft/etc/i386/Makeconf
| Preferred POSIX equivalent is: /cygdrive/c/R/Rsoft/etc/i386/Makeconf
| CYGWIN environment variable option "nodosfilewarning" turns off this
| warning.
| Consult the user's guide for more details about POSIX paths:
| http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
That started with more recent Cygwin / MinGW versions. Google for this, I
think there were tricks to turn it off. This came up on r-help once or twice
too.
But to reiterate: it is just a warning, and it has nothing to do with Rcpp.
Dirk
| Thank you very much.
|
| Best,
|
| Kent
|
|
| On Thu, Oct 13, 2011 at 6:46 PM, Dirk Eddelbuettel <edd at debian.org> wrote:
|
|
| On 13 October 2011 at 18:15, Jian Kang wrote:
| | Thanks for your reply.
| |
| | Here is the response of 'Hello World' program:
| |
| | > src='#include <iostream>
| | + using namespace std;
| | + void main()
| | + {
| | + cout << "Hello World!" << endl;
| | + cout << "Welcome to C++ Programming" << endl;
| | + }'
| | >
| | > fx <- cxxfunction(src,plugin = "Rcpp",verbose=T)
|
| PBKAC -- wrong call of cxxfunction(). You can see below how the generated
| code does *not* include your actual function.
|
| The correct idiom is
|
| fx <- cxxfunction(signature(), body=src,plugin = "Rcpp",verbose=TRUE)
|
| Dirk
|
|
| | >> setting environment variables:
| | PKG_LIBS = C:/R/Rsoft/library/Rcpp/lib/i386/libRcpp.a
| |
| | >> LinkingTo : Rcpp
| | CLINK_CPPFLAGS = -I"C:/R/Rsoft/library/Rcpp/include"
| |
| | >> Program source :
| |
| | 1 :
| | 2 : // includes from the plugin
| | 3 :
| | 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 file3a1c304e( ) ;
| | 24 : }
| | 25 :
| | 26 : // definition
| | 27 :
| | 28 : SEXP file3a1c304e( ){
| | 29 : BEGIN_RCPP
| | 30 :
| | 31 : END_RCPP
| | 32 : }
| | 33 :
| | 34 :
| | Compilation argument:
| | C:/R/Rsoft/bin/i386/R CMD SHLIB file3a1c304e.cpp 2>
| | file3a1c304e.cpp.err.txt
| | g++ -I"C:/R/Rsoft/include" -I"C:/R/Rsoft/library/Rcpp/include"
| -O2
| | -Wall -c file3a1c304e.cpp -o file3a1c304e.o
| | g++ -shared -s -static-libgcc -o file3a1c304e.dll tmp.def file3a1c304e.o
| C:/R/
| | Rsoft/library/Rcpp/lib/i386/libRcpp.a -LC:/R/Rsoft/bin/i386 -lR
| | cygwin warning:
| | MS-DOS style path detected: C:/R/Rsoft/etc/i386/Makeconf
| | Preferred POSIX equivalent is: /cygdrive/c/R/Rsoft/etc/i386/Makeconf
| | CYGWIN environment variable option "nodosfilewarning" turns off this
| | warning.
| | Consult the user's guide for more details about POSIX paths:
| | http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
| | Error in as.function.default(c(value, if (is.null(bd) || is.list(bd))
| list(bd)
| | else bd), :
| | invalid formal argument list for "function"
| |
| | Here, I also tried the test by Hadley,
| |
| | _devel()
| | cygwin warning:
| | MS-DOS style path detected: C:/R/Rsoft/etc/i386/Makeconf
| | Preferred POSIX equivalent is: /cygdrive/c/R/Rsoft/etc/i386/Makeconf
| | CYGWIN environment variable option "nodosfilewarning" turns off this
| | warning.
| | Consult the user's guide for more details about POSIX paths:
| | http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
| | gcc -I"C:/R/Rsoft/include" -I"C:/R/Rsoft/library/Rcpp/include"
| -O3
| | -Wall -std=gnu99 -c foo.c -o foo.o
| | gcc -shared -s -static-libgcc -o foo.dll tmp.def foo.o C:/R/Rsoft/library
| /Rcpp/
| | lib/i386/libRcpp.a -LC:/R/Rsoft/bin/i386 -lR
| | [1] TRUE
| |
| | Sorry that I don't really get it how to rebuild R packages from source.
| |
| | Thanks,
| |
| | Kent
| |
| | On Thu, Oct 13, 2011 at 5:11 PM, Hadley Wickham <hadley at rice.edu> wrote:
| |
| | > My best guess is that you have not installed the Rtools
| correctly. Can
| | you
| | > compile a simple 'hello, world' example in C or C++? Can you
| rebuild R
| | > packages from source?
| |
| | I wrote an function to check that you have a valid R development
| | environment (with help from Simon Urbanek) for devtools. See code
| | below - and check with has_devel()
| |
| | Hadley
| |
| |
| | has_devel <- function() {
| | foo_path <- file.path(tempdir(), "foo.c")
| |
| | cat("void foo(int *bar) { *bar=1; }\n", file = foo_path)
| | on.exit(unlink(foo_path))
| |
| | R("CMD SHLIB foo.c", tempdir())
| | dylib <- file.path(tempdir(), paste("foo", .Platform$dynlib.ext,
| sep=''))
| | on.exit(unlink(dylib), add = TRUE)
| |
| | dyn.load(dylib)
| | on.exit(dyn.unload(dylib), add = TRUE)
| |
| | stopifnot(do.call(".C", list("foo",0L))[[1]] == 1L)
| | TRUE
| | }
| |
| | R <- function(options, path = tempdir()) {
| | r_path <- shQuote(file.path(R.home("bin"), "R"))
| | in_dir(path, system_check(paste(r_path, options)))
| | }
| |
| | system_check <- function(cmd) {
| | res <- system(cmd)
| | if (res != 0) {
| | stop("Command failed (", res, ")", call. = FALSE)
| | }
| | invisible(TRUE)
| | }
| |
| | in_dir <- function(dir, code) {
| | cur <- getwd()
| | setwd(dir)
| | on.exit(setwd(cur))
| |
| | force(code)
| | }
| |
| | --
| | Assistant Professor / Dobelman Family Junior Chair
| | Department of Statistics / Rice University
| | http://had.co.nz/
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|
| --
| "Outside of a dog, a book is a man's best friend. Inside of a dog, it is
| too
| dark to read." -- Groucho Marx
|
|
--
"Outside of a dog, a book is a man's best friend. Inside of a dog, it is too
dark to read." -- Groucho Marx
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