ProjectExplorer: Fix switching build console to Utf8 for MSVC

Wrap make command into the script to switch console code page
to Utf8 before make (when the Kit check is on).

Task-number: QTCREATORBUG-20327
Change-Id: Ie3e372e52a09b93a41c5ac7ad63b7b14384655fb
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/projectexplorer/abstractmsvctoolchain.cpp

@@ -247,24 +247,46 @@ void AbstractMsvcToolChain::addToEnvironment(Utils::Environment &env) const
     env = m_resultEnvironment;
 }
 
+static QString wrappedMakeCommand(const QString &command)
+{
+    const QString wrapperPath = QDir::currentPath() + "/msvc_make.bat";
+    QFile wrapper(wrapperPath);
+    if (!wrapper.open(QIODevice::WriteOnly))
+        return command;
+    QTextStream stream(&wrapper);
+    stream << "chcp 65001\n";
+    stream << command << " %*";
+
+    return wrapperPath;
+}
+
 QString AbstractMsvcToolChain::makeCommand(const Utils::Environment &environment) const
 {
     bool useJom = ProjectExplorerPlugin::projectExplorerSettings().useJom;
-    const QString jom = QLatin1String("jom.exe");
+    const QString jom("jom.exe");
-    const QString nmake = QLatin1String("nmake.exe");
+    const QString nmake("nmake.exe");
     Utils::FileName tmp;
 
+    QString command;
     if (useJom) {
         tmp = environment.searchInPath(jom, {Utils::FileName::fromString(QCoreApplication::applicationDirPath())});
         if (!tmp.isEmpty())
-            return tmp.toString();
+            command = tmp.toString();
     }
-    tmp = environment.searchInPath(nmake);
-    if (!tmp.isEmpty())
-        return tmp.toString();
 
-    // Nothing found :(
+    if (command.isEmpty()) {
-    return useJom ? jom : nmake;
+        tmp = environment.searchInPath(nmake);
+        if (!tmp.isEmpty())
+            command = tmp.toString();
+    }
+
+    if (command.isEmpty())
+        command = useJom ? jom : nmake;
+
+    if (environment.hasKey("VSLANG"))
+        return wrappedMakeCommand(command);
+
+    return command;
 }
 
 Utils::FileName AbstractMsvcToolChain::compilerCommand() const

src/plugins/projectexplorer/abstractprocessstep.cpp

@@ -25,6 +25,7 @@
 
 #include "abstractprocessstep.h"
 #include "ansifilterparser.h"
+#include "buildconfiguration.h"
 #include "buildstep.h"
 #include "project.h"
 #include "task.h"
@@ -305,8 +306,11 @@ void AbstractProcessStep::processReadyReadStdOutput()
     if (!m_process)
         return;
     m_process->setReadChannel(QProcess::StandardOutput);
+    const bool utf8Output = buildConfiguration()->environment().hasKey("VSLANG");
+
     while (m_process->canReadLine()) {
-        QString line = QString::fromLocal8Bit(m_process->readLine());
+        QString line = utf8Output ? QString::fromUtf8(m_process->readLine())
+                                  : QString::fromLocal8Bit(m_process->readLine());
         stdOutput(line);
     }
 }

src/plugins/projectexplorer/kitinformationconfigwidget.cpp

@@ -507,8 +507,11 @@ QWidget *KitEnvironmentConfigWidget::buttonWidget() const
 
 void KitEnvironmentConfigWidget::initMSVCOutputSwitch(QVBoxLayout *layout)
 {
-    m_vslangCheckbox = new QCheckBox(tr("Force English MSVC compiler output (VSLANG=1033)"));
+    m_vslangCheckbox = new QCheckBox(tr("Force UTF-8 MSVC compiler output"));
     layout->addWidget(m_vslangCheckbox);
+    m_vslangCheckbox->setToolTip(tr("Either switches MSVC to English or keeps the language and "
+                                    "just forces UTF-8 output (may vary depending on the used MSVC "
+                                    "compiler)."));
     connect(m_vslangCheckbox, &QCheckBox::toggled, this, [this](bool checked) {
         QList<Utils::EnvironmentItem> changes
                 = EnvironmentKitInformation::environmentChanges(m_kit);