From 4e10abb4c14df2ffc162a0eb017229dfa2bab1fb Mon Sep 17 00:00:00 2001
From: Ulf Hermann <ulf.hermann@qt.io>
Date: Mon, 12 Oct 2020 15:13:05 +0200
Subject: Add externConstexpr to MSVC compile options

We want this in order to be able to export constexpr members.

Change-Id: I33ba7964ebee54fe656df983985d8d6fa0b99358
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
---
 cmake/QtInternalTargets.cmake | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'cmake')

diff --git a/cmake/QtInternalTargets.cmake b/cmake/QtInternalTargets.cmake
index 1485726f0f..91a75983ea 100644
--- a/cmake/QtInternalTargets.cmake
+++ b/cmake/QtInternalTargets.cmake
@@ -186,6 +186,11 @@ if (MSVC)
             -Zc:referenceBinding
         )
     endif()
+    if (MSVC_VERSION GREATER_EQUAL 1919)
+        target_compile_options(PlatformCommonInternal INTERFACE
+            -Zc:externConstexpr
+        )
+    endif()
 
     target_compile_options(PlatformCommonInternal INTERFACE -Zc:wchar_t)
 
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