ProjectExplorer: Fix clang ABI detection

Change-Id: I809f8b747ffb64ed128fd0f957d13d670604d050
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/projectexplorer/abi.cpp

@@ -789,6 +789,28 @@ QList<Abi::OSFlavor> Abi::flavorsForOs(const Abi::OS &o)
     return result;
 }
 
+Abi::OSFlavor Abi::flavorForMsvcVersion(int version)
+{
+    if (version >= 1910)
+        return WindowsMsvc2017Flavor;
+    switch (version) {
+    case 1900:
+        return WindowsMsvc2015Flavor;
+    case 1800:
+        return WindowsMsvc2013Flavor;
+    case 1700:
+        return WindowsMsvc2012Flavor;
+    case 1600:
+        return WindowsMsvc2010Flavor;
+    case 1500:
+        return WindowsMsvc2008Flavor;
+    case 1400:
+        return WindowsMsvc2005Flavor;
+    default:
+        return WindowsMSysFlavor;
+    }
+}
+
 Abi Abi::hostAbi()
 {
     Architecture arch = QTC_CPU; // define set by qmake
@@ -798,20 +820,8 @@ Abi Abi::hostAbi()
 
 #if defined (Q_OS_WIN)
     os = WindowsOS;
-#if _MSC_VER >= 1910
-    subos = WindowsMsvc2017Flavor;
-#elif _MSC_VER == 1900
-    subos = WindowsMsvc2015Flavor;
-#elif _MSC_VER == 1800
-    subos = WindowsMsvc2013Flavor;
-#elif _MSC_VER == 1700
-    subos = WindowsMsvc2012Flavor;
-#elif _MSC_VER == 1600
-    subos = WindowsMsvc2010Flavor;
-#elif _MSC_VER == 1500
-    subos = WindowsMsvc2008Flavor;
-#elif _MSC_VER == 1400
-    subos = WindowsMsvc2005Flavor;
+#ifdef _MSC_VER
+    subos = flavorForMsvcVersion(_MSC_VER);
 #elif defined (Q_CC_MINGW)
     subos = WindowsMSysFlavor;
 #endif

src/plugins/projectexplorer/abi.h

@@ -139,6 +139,7 @@ public:
     static QString toString(int w);
 
     static QList<OSFlavor> flavorsForOs(const OS &o);
+    static OSFlavor flavorForMsvcVersion(int version);
 
     static Abi hostAbi();
     static QList<Abi> abisOfBinary(const Utils::FileName &path);

src/plugins/projectexplorer/gcctoolchain.cpp

@@ -269,11 +269,19 @@ static QList<Abi> guessGccAbi(const QString &m, const QByteArray &macros)
     Abi::OSFlavor flavor = guessed.osFlavor();
     Abi::BinaryFormat format = guessed.binaryFormat();
     int width = guessed.wordWidth();
+    const QByteArray mscVer = "#define _MSC_VER ";
 
     if (macros.contains("#define __SIZEOF_SIZE_T__ 8"))
         width = 64;
     else if (macros.contains("#define __SIZEOF_SIZE_T__ 4"))
         width = 32;
+    int mscVerIndex = macros.indexOf(mscVer);
+    if (mscVerIndex != -1) {
+        mscVerIndex += mscVer.length();
+        const int eol = macros.indexOf('\n', mscVerIndex);
+        const int msvcVersion = macros.mid(mscVerIndex, eol - mscVerIndex).toInt();
+        flavor = Abi::flavorForMsvcVersion(msvcVersion);
+    }
 
     if (os == Abi::DarwinOS) {
         // Apple does PPC and x86!