Add qmake support for c++2a

Makes it possible to build user projects and Qt with C++2a. It is not
automatically upgraded to yet though.

Change-Id: I949ce94871ddc53f21b7265a52b9c0e1370456c8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/configure.pri b/configure.pri
index bfc0ca013f..81133da3d7 100644
--- a/configure.pri
+++ b/configure.pri
@@ -20,12 +20,20 @@ defineTest(qtConfCommandline_cxxstd) {
     !contains(val, "^-.*"):!isEmpty(val) {
         contains(val, "(c\+\+)?11") {
             qtConfCommandlineSetInput("c++14", "no")
+            qtConfCommandlineSetInput("c++1z", "no")
+            qtConfCommandlineSetInput("c++2a", "no")
         } else: contains(val, "(c\+\+)?(14|1y)") {
             qtConfCommandlineSetInput("c++14", "yes")
             qtConfCommandlineSetInput("c++1z", "no")
+            qtConfCommandlineSetInput("c++2a", "no")
         } else: contains(val, "(c\+\+)?(17|1z)") {
             qtConfCommandlineSetInput("c++14", "yes")
             qtConfCommandlineSetInput("c++1z", "yes")
+            qtConfCommandlineSetInput("c++2a", "no")
+        } else: contains(val, "(c\+\+)?(2a)") {
+            qtConfCommandlineSetInput("c++14", "yes")
+            qtConfCommandlineSetInput("c++1z", "yes")
+            qtConfCommandlineSetInput("c++2a", "yes")
         } else {
             qtConfAddError("Invalid argument $$val to command line parameter $$arg")
         }