Ticket #5864: mpi-windows-build2.patch

tools/build/v2/tools/mpi.jam

@@ -231 +231 @@
 # not. Returns true for an exit code of zero, false otherwise.
 local rule safe-shell-command ( cmdline )
 {
-  local result = [ SHELL "$(cmdline) > /dev/null 2>/dev/null; if [ "$?" -eq "0" ]; then echo SSCOK; fi" ] ;
+  local result ;
+  
+  if [ os.name ] = NT {
+    result = [ SHELL "$(cmdline) >NUL 2>NUL && echo SSCOK" ] ;
+  } else {
+    result = [ SHELL "$(cmdline) > /dev/null 2>/dev/null; if [ "$?" -eq "0" ]; then echo SSCOK; fi" ] ;
+  }
+  
   return [ MATCH ".*(SSCOK).*" : $(result) ] ;
 }