61 lines
1.6 KiB
R
61 lines
1.6 KiB
R
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#!/bin/env Rscript
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# Copyright (C) 2010 Dirk Eddelbuettel and Romain Francois
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#
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# This file is part of Rcpp.
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#
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# Rcpp is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version.
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#
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# Rcpp is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Rcpp. If not, see <http://www.gnu.org/licenses/>.
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# This script is used by the Rcpp::RcppCxx0xFlags function to
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# generate the "-std=c++0x" flag when the compiler in use is GCC >= 4.3
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local({
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flag <- function(){
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cxx0x.code <- '
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#include <R.h>
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#include <Rdefines.h>
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extern "C" SEXP cxx0x(){
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#ifdef __GNUC__
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#define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
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#if GCC_VERSION >= 40300
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return mkString( "-std=c++0x" ) ;
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#endif
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#endif
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return mkString( "" ) ;
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}
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'
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td <- tempfile()
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dir.create( td )
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here <- getwd()
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setwd(td)
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dll <- sprintf( "cxx0x%s", .Platform$dynlib.ext )
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on.exit( {
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dyn.unload( dll )
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setwd(here) ;
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unlink( td, recursive = TRUE )
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} )
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writeLines( cxx0x.code, "cxx0x.cpp" )
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cmd <- sprintf( "%s/R CMD SHLIB cxx0x.cpp", R.home(component="bin") )
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system( cmd, intern = TRUE )
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dyn.load( dll )
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res <- tryCatch( .Call( "cxx0x" ), error = "" )
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res
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}
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cat( flag() )
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})
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