Display compiler in "About Qt Creator".

In order to determine the build environment for Qt Designer and
other plugins.

Change-Id: I10ca98481097b9425c080a08fabd08e710b6d5c2
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

src/plugins/coreplugin/icore.cpp

@@ -29,8 +29,11 @@
 
 #include "icore.h"
 
+#include <app/app_version.h>
 #include <extensionsystem/pluginmanager.h>
 
+#include <QSysInfo>
+
 /*!
     \namespace Core
     \brief The Core namespace contains all classes that make up the Core plugin
@@ -508,6 +511,41 @@ QString ICore::userResourcePath()
     return urp;
 }
 
+static QString compilerString()
+{
+#if defined(Q_CC_CLANG) // must be before GNU, because clang claims to be GNU too
+    QString isAppleString;
+#if defined(__apple_build_version__) // Apple clang has other version numbers
+    isAppleString = QLatin1String(" (Apple)");
+#endif
+    return QLatin1String("Clang " ) + QString::number(__clang_major__) + QLatin1Char('.')
+            + QString::number(__clang_minor__) + isAppleString;
+#elif defined(Q_CC_GNU)
+    return QLatin1String("GCC " ) + QLatin1String(__VERSION__);
+#elif defined(Q_CC_MSVC)
+    if (_MSC_VER >= 1500) // 1500: MSVC 2008, 1600: MSVC 2010, ...
+        return QLatin1String("MSVC ") + QString::number(2008 + 2 * ((_MSC_VER / 100) - 15));
+#endif
+    return QLatin1String("<unknown compiler>");
+}
+
+QString ICore::versionString()
+{
+    QString ideVersionDescription;
+#ifdef IDE_VERSION_DESCRIPTION
+    ideVersionDescription = tr(" (%1)").arg(QLatin1String(Constants::IDE_VERSION_DESCRIPTION_STR));
+#endif
+    return tr("Qt Creator %1%2").arg(QLatin1String(Constants::IDE_VERSION_LONG),
+                                     ideVersionDescription);
+}
+
+QString ICore::buildCompatibilityString()
+{
+    return tr("Based on Qt %1 (%2, %3 bit)").arg(QLatin1String(qVersion()),
+                                                 compilerString(),
+                                                 QString::number(QSysInfo::WordSize));
+}
+
 IContext *ICore::currentContextObject()
 {
     return m_mainwindow->currentContextObject();

src/plugins/coreplugin/icore.h

@@ -113,6 +113,9 @@ public:
     static QString resourcePath();
     static QString userResourcePath();
 
+    static QString versionString();
+    static QString buildCompatibilityString();
+
     static QWidget *mainWindow();
     static Utils::AppMainWindow *appMainWindow();
     static QStatusBar *statusBar();

src/plugins/coreplugin/versiondialog.cpp

@@ -31,10 +31,9 @@
 
 #include <app/app_version.h>
 #include <coreplugin/coreconstants.h>
+#include <coreplugin/icore.h>
 #include <utils/qtcassert.h>
 
-#include <QSysInfo>
-
 #include <QDialogButtonBox>
 #include <QGridLayout>
 #include <QLabel>
@@ -55,13 +54,6 @@ VersionDialog::VersionDialog(QWidget *parent)
     QGridLayout *layout = new QGridLayout(this);
     layout->setSizeConstraint(QLayout::SetFixedSize);
 
-    QString version = QLatin1String(Constants::IDE_VERSION_LONG);
-
-    QString ideVersionDescription;
-#ifdef IDE_VERSION_DESCRIPTION
-    ideVersionDescription = tr("(%1)").arg(QLatin1String(Constants::IDE_VERSION_DESCRIPTION_STR));
-#endif
-
     QString ideRev;
 #ifdef IDE_REVISION
      //: This gets conditionally inserted as argument %8 into the description string.
@@ -69,23 +61,24 @@ VersionDialog::VersionDialog(QWidget *parent)
 #endif
 
      const QString description = tr(
-        "<h3>Qt Creator %1 %8</h3>"
-        "Based on Qt %2 (%3 bit)<br/>"
+        "<h3>%1</h3>"
+        "%2<br/>"
         "<br/>"
-        "Built on %4 at %5<br />"
+        "Built on %3 at %4<br />"
         "<br/>"
-        "%9"
+        "%5"
         "<br/>"
         "Copyright 2008-%6 %7. 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(version,
-             QLatin1String(qVersion()), QString::number(QSysInfo::WordSize),
-             QLatin1String(__DATE__), QLatin1String(__TIME__), QLatin1String(Constants::IDE_YEAR),
-             (QLatin1String(Constants::IDE_AUTHOR)), ideVersionDescription,
-             ideRev);
+        .arg(ICore::versionString(),
+             ICore::buildCompatibilityString(),
+             QLatin1String(__DATE__), QLatin1String(__TIME__),
+             ideRev,
+             QLatin1String(Constants::IDE_YEAR),
+             QLatin1String(Constants::IDE_AUTHOR));
 
     QLabel *copyRightLabel = new QLabel(description);
     copyRightLabel->setWordWrap(true);