Fix Qt SDK version for cross-compiling

xmake/modules/detect/sdks/find_qt.lua

@@ -219,6 +219,23 @@ function _get_qtenvs(qmake, sdkdir)
     end
 end
 
+-- check and correct SDK version for cross-compiling
+function _tryfix_sdkver_for_cross(sdkdir, sdkver)
+    local qconfig_path = path.join(sdkdir, "mkspecs", "qconfig.pri")
+    if not sdkver or not os.isfile(qconfig_path) then
+        return sdkver
+    end
+    -- Extract the actual SDK version from qconfig.pri
+    local actual_sdkver = io.readfile(qconfig_path):match("QT_VERSION%s*=%s*(%S*)") -- Expected format: QT_VERSION = x.y.z
+    if not actual_sdkver then
+        return sdkver
+    end
+    if sdkver ~= actual_sdkver then
+        wprint("Host Qt SDK version (%s) differs from Target Qt SDK version (%s). To prevent build issues, please ensure both use the same version.", sdkver, actual_sdkver);
+    end
+    return actual_sdkver
+end
+
 -- find qt sdk toolchains
 function _find_qt(sdkdir, sdkver)
 
@@ -237,7 +254,7 @@ function _find_qt(sdkdir, sdkver)
 
     -- get qt toolchains
     sdkdir = qtenvs.QT_INSTALL_PREFIX
-    local sdkver = qtenvs.QT_VERSION
+    local sdkver = _tryfix_sdkver_for_cross(sdkdir, qtenvs.QT_VERSION)
     local bindir = qtenvs.QT_INSTALL_BINS
     local libexecdir = qtenvs.QT_INSTALL_LIBEXECS
     local qmldir = qtenvs.QT_INSTALL_QML