added two simple plugins for c++0x and c++11y, respectively

Author: eddelbuettel

ChangeLog

@@ -1,3 +1,7 @@
+2014-04-30  Dirk Eddelbuettel  <[email protected]>
+
+	* R/Attributes.R: Add plugins for C++0x and C++1y 
+
 2014-04-30  JJ Allaire <[email protected]>
 
         * R/Attributes.R: Use USE_CXX1X for cpp11 plugin when R >= 3.1

R/Attributes.R

@@ -393,9 +393,19 @@ compileAttributes <- function(pkgdir = ".", verbose = getOption("verbose")) {
 # built-in C++11 plugin
 .plugins[["cpp11"]] <- function() {
     if (getRversion() >= "3.1")
-      list(env = list(USE_CXX1X = ""))
+        list(env = list(USE_CXX1X = ""))
     else
-      list(env = list(PKG_CXXFLAGS ="-std=c++11"))
+        list(env = list(PKG_CXXFLAGS ="-std=c++11"))
+}
+
+# built-in C++11 plugin for older g++ compiler
+.plugins[["cpp0x"]] <- function() {
+    list(env = list(PKG_CXXFLAGS ="-std=c++0x"))
+}
+
+# built-in C++1y plugin for C++14 and C++17 standard under development
+.plugins[["cpp1y"]] <- function() {
+    list(env = list(PKG_CXXFLAGS ="-std=c++1y"))
 }
 
 ## built-in OpenMP++11 plugin

inst/NEWS.Rd

@@ -12,7 +12,10 @@
     parser. This allows the parser to handle C++ source files
     containing comments inline with function arguments.
     \item The \code{USE_CXX1X} environment variable is now defined by 
-    the cpp11 plugin when R >= 3.1
+    the cpp11 plugin when R >= 3.1. Two additional plugins have been
+    added for use with C++0x (eg when using g++ 4.6.* as on Windows)
+    as well as C++1y for compilers beginning to support the next
+    revision of the stanard.
   }
 }