Select Visual Studio version based on mkspec

Change 7a1e0d57d1a1683442 determined the Visual Studio version based
on the 'VisualStudioVersion' environment variable. While this variable
is defined by the default Visual Studio command line prompt, it isn't
necessarily set in other environments.

Anyhow, Qt already determined the compiler/Visual Studio version in the
mkspec. We can just reuse this here.

Change-Id: Ibee9526e91ae855151940da6be438705de048c0c
Reviewed-by: Andras Becsi <andras.becsi@theqtcompany.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/src/core/config/windows.pri b/src/core/config/windows.pri
index f7644c83b..602afbc67 100644
--- a/src/core/config/windows.pri
+++ b/src/core/config/windows.pri
@@ -28,3 +28,17 @@ contains(QT_CONFIG, angle) {
     GYP_ARGS += "-D qt_gl=\"opengl\""
 }
 
+msvc {
+    equals(MSVC_VER, 12.0) {
+        MSVS_VERSION = 2013
+    } else:equals(MSVC_VER, 14.0) {
+        MSVS_VERSION = 2015
+    } else {
+        fatal("Visual Studio compiler version \"$$MSVC_VER\" is not supported by Qt WebEngine")
+    }
+
+    GYP_ARGS += "-G msvs_version=$$MSVS_VERSION"
+
+} else {
+    fatal("Qt WebEngine for Windows can only be built with the Microsoft Visual Studio C++ compiler")
+}