Try installing binaries instead of building from source

.circleci/qt-installer-script.js

@@ -0,0 +1,75 @@
+function Controller() {
+    installer.installationFinished.connect(proceed)
+}
+
+function logCurrentPage() {
+    var pageName = page().objectName
+    var pagePrettyTitle = page().title
+    console.log("At page: " + pageName + " ('" + pagePrettyTitle + "')")
+}
+
+function page() {
+    return gui.currentPageWidget()
+}
+
+function proceed(button, delay) {
+    gui.clickButton(button || buttons.NextButton, delay)
+}
+
+Controller.prototype.WelcomePageCallback = function() {
+    logCurrentPage()
+    proceed(buttons.NextButton, 2000)
+}
+
+Controller.prototype.CredentialsPageCallback = function() {
+    logCurrentPage()
+    page().loginWidget.EmailLineEdit.text = installer.environmentVariable("QT_EMAIL");
+    page().loginWidget.PasswordLineEdit.text = installer.environmentVariable("QT_PASSWORD");
+    proceed()
+}
+
+Controller.prototype.IntroductionPageCallback = function() {
+    logCurrentPage()
+    proceed()
+}
+
+Controller.prototype.TargetDirectoryPageCallback = function() {
+    logCurrentPage()
+    proceed()
+}
+
+Controller.prototype.ComponentSelectionPageCallback = function() {
+    logCurrentPage()
+    page().deselectAll()
+    page().selectComponent("qt.qt5.5140.gcc_64")
+    proceed()
+}
+
+Controller.prototype.LicenseAgreementPageCallback = function() {
+    logCurrentPage()
+    page().AcceptLicenseRadioButton.checked = true
+    gui.clickButton(buttons.NextButton)
+}
+
+Controller.prototype.ReadyForInstallationPageCallback = function() {
+    logCurrentPage()
+    proceed()
+}
+
+Controller.prototype.PerformInstallationPageCallback = function() {
+    logCurrentPage()
+}
+
+Controller.prototype.FinishedPageCallback = function() {
+    logCurrentPage()
+    page().LaunchQtCreatorCheckBoxForm.launchQtCreatorCheckBox.checked = false
+    proceed(buttons.FinishButton)
+}
+
+Controller.prototype.DynamicTelemetryPluginFormCallback = function() {
+    logCurrentPage()
+    console.log(Object.keys(page().TelemetryPluginForm.statisticGroupBox))
+    var radioButtons = page().TelemetryPluginForm.statisticGroupBox
+    radioButtons.disableStatisticRadioButton.checked = true
+    proceed()
+}