Make Qt Creator build with -Werror=date-time

As a part of making the Qt Creator build reproducible, ensure that the
build time isn't by default encoded into the binaries.

Change-Id: I92bc3c2e832d5397bc1e2599214ef3ba911fed0b
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

src/libs/qtcreatorcdbext/qtcreatorcdbextension.cpp

@@ -279,8 +279,8 @@ extern "C" HRESULT CALLBACK pid(CIDebugClient *client, PCSTR args)
 
     int token;
     commandTokens<StringList>(args, &token);
-    dprintf("Qt Creator CDB extension version 3.3 %d bit built %s.\n",
+    dprintf("Qt Creator CDB extension version 3.3 %d bit.\n",
-            sizeof(void *) * 8, __DATE__);
+            sizeof(void *) * 8);
     if (const ULONG pid = currentProcessId(client))
         ExtensionContext::instance().report('R', token, 0, "pid", "%u", pid);
     else
@@ -940,7 +940,7 @@ extern "C" HRESULT CALLBACK setparameter(CIDebugClient *, PCSTR args)
 extern "C" HRESULT CALLBACK help(CIDebugClient *, PCSTR)
 {
     std::ostringstream str;
-    str << "### Qt Creator CDB extension built " << __DATE__ << "\n\n";
+    str << "### Qt Creator CDB extension" << "\n\n";
 
     const size_t commandCount = sizeof(commandDescriptions)/sizeof(CommandDescription);
     std::copy(commandDescriptions, commandDescriptions + commandCount,

src/plugins/coreplugin/coreplugin.pro

@@ -5,6 +5,10 @@ QT += help \
     script \
     sql
 
+# embedding build time information prevents repeatedly binary exact versions from same source code
+isEmpty(QTC_SHOW_BUILD_DATE): QTC_SHOW_BUILD_DATE = $$(QTC_SHOW_BUILD_DATE)
+!isEmpty(QTC_SHOW_BUILD_DATE): DEFINES += QTC_SHOW_BUILD_DATE
+
 include(../../qtcreatorplugin.pri)
 win32-msvc*:QMAKE_CXXFLAGS += -wd4251 -wd4290 -wd4250
 SOURCES += corejsextensions.cpp \

src/plugins/coreplugin/versiondialog.cpp

@@ -63,23 +63,28 @@ VersionDialog::VersionDialog(QWidget *parent)
      //: This gets conditionally inserted as argument %8 into the description string.
      ideRev = tr("From revision %1<br/>").arg(QString::fromLatin1(Constants::IDE_REVISION_STR).left(10));
 #endif
+     QString buildDateInfo;
+#ifdef QTC_SHOW_BUILD_DATE
+     buildDateInfo = tr("Built on %1 %2<br/>").arg(QLatin1String(__DATE__), QLatin1String(__TIME__));
+#endif
+
 
      const QString description = tr(
         "<h3>%1</h3>"
         "%2<br/>"
         "<br/>"
-        "Built on %3 at %4<br />"
+        "%3"
         "<br/>"
-        "%5"
+        "%4"
         "<br/>"
-        "Copyright 2008-%6 %7. All rights reserved.<br/>"
+        "Copyright 2008-%5 %6. All rights reserved.<br/>"
         "<br/>"
         "The program is provided AS IS with NO WARRANTY OF ANY KIND, "
         "INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A "
         "PARTICULAR PURPOSE.<br/>")
         .arg(ICore::versionString(),
              ICore::buildCompatibilityString(),
-             QLatin1String(__DATE__), QLatin1String(__TIME__),
+             buildDateInfo,
              ideRev,
              QLatin1String(Constants::IDE_YEAR),
              QLatin1String(Constants::IDE_AUTHOR));

src/tools/qtcreatorcrashhandler/crashhandlerdialog.cpp

@@ -138,9 +138,9 @@ void CrashHandlerDialog::setApplicationInfo(const QString &signalName)
      revision = QLatin1Char(' ') + tr("from revision %1").arg(QString::fromLatin1(Core::Constants::IDE_REVISION_STR).left(10));
 #endif
     const QString versionInformation = tr(
-        "%1 %2%3, built on %4 at %5, based on Qt %6 (%7 bit)\n")
+        "%1 %2%3, based on Qt %4 (%5 bit)\n")
             .arg(ideName, QLatin1String(Core::Constants::IDE_VERSION_LONG), revision,
-                 QLatin1String(__DATE__), QLatin1String(__TIME__), QLatin1String(QT_VERSION_STR),
+                 QLatin1String(QT_VERSION_STR),
                  QString::number(QSysInfo::WordSize));
     m_ui->debugInfoEdit->append(versionInformation);
 }