use '_WIN32' instead of 'WIN32' (closes #336)

Author: kevinushey

ChangeLog

@@ -1,3 +1,7 @@
+2015-08-05  Kevin Ushey  <[email protected]>
+
+        * src/api.cpp: use `_WIN32` instead of `WIN32`
+
 2015-08-02  Dirk Eddelbuettel  <[email protected]>
 
         * R/Attributes.R (sourceCpp): In no-rebuild-needed case, also set a

src/api.cpp

@@ -34,7 +34,7 @@ using namespace Rcpp;
 #endif
 
 #if defined(__GNUC__)
-    #if defined(WIN32) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__CYGWIN__) || defined(__sun) || defined(_AIX)
+    #if defined(_WIN32) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__CYGWIN__) || defined(__sun) || defined(_AIX)
         // do nothing
     #else
         #include <execinfo.h>
@@ -257,14 +257,14 @@ SEXP rcpp_can_use_cxx11() {
 // [[Rcpp::register]]
 SEXP stack_trace(const char* file, int line) {
     #if defined(__GNUC__)
-        #if defined(WIN32) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__CYGWIN__) || defined(__sun) || defined(_AIX)
+        #if defined(_WIN32) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__CYGWIN__) || defined(__sun) || defined(_AIX)
             // Simpler version for Windows and *BSD
             List trace = List::create(_["file"] = file,
                                       _[ "line"  ] = line,
                                       _[ "stack" ] = "C++ stack not available on this system");
             trace.attr("class") = "Rcpp_stack_trace";
             return trace;
-        #else // ! (defined(WIN32) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__CYGWIN__) || defined(__sun) || defined(_AIX)
+        #else // ! (defined(_WIN32) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__CYGWIN__) || defined(__sun) || defined(_AIX)
 
             /* inspired from http://tombarta.wordpress.com/2008/08/01/c-stack-traces-with-gcc/  */
             const size_t max_depth = 100;