Clang: Require at least LLVM 3.8.0

Change-Id: I2de3eef7bc06cba6298d64a9a042a01decc05384
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

README.md

@@ -23,6 +23,7 @@ Prerequisites:
     * jom
 * On Mac OS X: latest Xcode
 * On Linux: g++ 4.7 or later
+* LLVM 3.8.0 or later for the Clang Code Model
 
 The installed toolchains have to match the one Qt was compiled with.
 
@@ -116,7 +117,7 @@ For detailed information on the supported compilers, see
        command...` error. If a `sh.exe` is found, the compile process will fail.
        You have to remove it from the path.
 
-  10.  To enable the Clang-based code model: Install Clang (>= version 3.6.2)
+  10.  To enable the Clang-based code model: Install Clang (>= version 3.8.0)
        and set the environment variable LLVM_INSTALL_DIR to point to the
        installation location.
 

doc/src/editors/creator-clang-codemodel.qdoc

@@ -103,7 +103,7 @@
 
     \list 1
 
-        \li Acquire Clang 3.6.2 or higher in one of the following ways:
+        \li Acquire Clang 3.8.0 or higher in one of the following ways:
 
             \list
 

qbs/modules/libclang/functions.js

@@ -1,6 +1,6 @@
 var Environment = loadExtension("qbs.Environment")
 var File = loadExtension("qbs.File")
-var MinimumLLVMVersion = "3.6.2"
+var MinimumLLVMVersion = "3.8.0"
 var Process = loadExtension("qbs.Process")
 
 function readOutput(executable, args)
@@ -27,8 +27,7 @@ function llvmConfig(qbs, qtcFunctions)
 {
     var llvmInstallDirFromEnv = Environment.getEnv("LLVM_INSTALL_DIR")
     var llvmConfigVariants = [
-        "llvm-config", "llvm-config-3.2", "llvm-config-3.3", "llvm-config-3.4",
-        "llvm-config-3.5", "llvm-config-3.6", "llvm-config-4.0", "llvm-config-4.1"
+        "llvm-config", "llvm-config-3.8", "llvm-config-3.9", "llvm-config-4.0", "llvm-config-4.1"
     ];
 
     // Prefer llvm-config* from LLVM_INSTALL_DIR

src/shared/clang/clang_installation.pri

@@ -106,6 +106,6 @@ unix {
 }
 
 isEmpty(LLVM_VERSION): error("Cannot determine clang version at $$LLVM_INSTALL_DIR")
-!versionIsAtLeast($$LLVM_VERSION, 3, 6, 2): {
-    error("LLVM/Clang version >= 3.6.2 required, version provided: $$LLVM_VERSION")
+!versionIsAtLeast($$LLVM_VERSION, 3, 8, 0): {
+    error("LLVM/Clang version >= 3.8.0 required, version provided: $$LLVM_VERSION")
 }