Require Windows 10 SDK

We can not build without the Windows 10 SDK, so test if we have one
before starting a build.

Change-Id: Ib7b6ea3be6a228b4f9baaa15b3d11b79b70b90c2
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

1 files changed, 20 insertions, 0 deletions

diff --git a/tools/qmake/mkspecs/features/functions.prf b/tools/qmake/mkspecs/features/functions.prf
index ed6fa289b..77d512f5f 100644
--- a/tools/qmake/mkspecs/features/functions.prf
+++ b/tools/qmake/mkspecs/features/functions.prf
@@ -22,6 +22,10 @@ defineTest(isPlatformSupported) {
     isBuildingOnWin32() {
       skipBuild("Qt WebEngine on Windows must be built on a 64-bit machine.")
     }
+    !isMinWinSDKVersion(10, 10586): {
+      skipBuild("Qt WebEngine on Windows requires a Windows SDK version 10.0.10586 or newer.")
+      return(false)
+    }
   } else:osx {
     lessThan(QMAKE_XCODE_VERSION, 5.1) {
       skipBuild("Using XCode version $$QMAKE_XCODE_VERSION, but at least version 5.1 is required to build Qt WebEngine.")
@@ -114,6 +118,22 @@ defineTest(isMinOSXSDKVersion) {
     return(false)
 }
 
+defineTest(isMinWinSDKVersion) {
+    requested_major = $$1
+    requested_minor = $$2
+    WIN_SDK_VERSION = $$(WindowsSDKVersion)
+
+    # major.0.minor
+    major_version = $$section(WIN_SDK_VERSION, ., 0, 0)
+    minor_version = $$section(WIN_SDK_VERSION, ., 2, 2)
+
+    greaterThan(major_version, $$requested_major):return(true)
+    equals(major_version, $$requested_major):greaterThan(minor_version, $$requested_minor):return(true)
+    equals(major_version, $$requested_major):equals(minor_version, $$requested_minor)::return(true)
+
+    return(false)
+}
+
 # Map to the correct target type for gyp
 defineReplace(toGypTargetType) {
   equals(TEMPLATE, "app"):return("executable")