Driver: Recognize CentOS 6 as RHEL 6.

Patch by Dimitry Andric!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@207963 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index d8ed34ff6e65f7bab77754476f94f8b5bed074ae..6e741c6ab2f77ce0c0b12a8d6865a77be5e6f9ad 100644 (file)
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -2791,17 +2791,15 @@ static Distro DetectDistro(llvm::Triple::ArchType Arch) {
     StringRef Data = File.get()->getBuffer();
     if (Data.startswith("Fedora release"))
       return Fedora;
-    else if (Data.startswith("Red Hat Enterprise Linux") &&
-             Data.find("release 6") != StringRef::npos)
-      return RHEL6;
-    else if ((Data.startswith("Red Hat Enterprise Linux") ||
-              Data.startswith("CentOS")) &&
-             Data.find("release 5") != StringRef::npos)
-      return RHEL5;
-    else if ((Data.startswith("Red Hat Enterprise Linux") ||
-              Data.startswith("CentOS")) &&
-             Data.find("release 4") != StringRef::npos)
-      return RHEL4;
+    if (Data.startswith("Red Hat Enterprise Linux") ||
+        Data.startswith("CentOS")) {
+      if (Data.find("release 6") != StringRef::npos)
+        return RHEL6;
+      else if (Data.find("release 5") != StringRef::npos)
+        return RHEL5;
+      else if (Data.find("release 4") != StringRef::npos)
+        return RHEL4;
+    }
     return UnknownDistro;
   }