[HIPIFY] cmake changes

+ standalone build support
+ WIN MSVC support
+ disable lit testing by default
+ to enable lit testing -DHIPIFY_CLANG_TESTS=1 should be specified

Tested builds:
+ hipify-clang standalone           {Ubuntu 16.04|Windows 10} {Debug|Release} {x86|x64a} {g++|clang++|MSVC 2017} {llvm 3.8.0|llvm 3.9.0} {-DHIPIFY_CLANG_TESTS=1| }
+ HIP {-DHIPIFY_CLANG_LLVM_DIR=..|} {Ubuntu 16.04}            {Debug|Release} {x86|x64a} {hcc}                   {llvm 3.8.0|llvm 3.9.0} {-DHIPIFY_CLANG_TESTS=1| }

hipify-clang/CMakeLists.txt

@@ -1,14 +1,16 @@
 cmake_minimum_required(VERSION 2.8.8)
 project(hipify-clang)
 
-set(BUILD_HIPIFY_CLANG 0 PARENT_SCOPE)
+if (PARENT_SCOPE)
+    set(BUILD_HIPIFY_CLANG 0 PARENT_SCOPE)
+endif()
 
 # Find LLVM package
 find_package(LLVM 3.8 QUIET PATHS ${HIPIFY_CLANG_LLVM_DIR} NO_DEFAULT_PATH)
 if (NOT ${LLVM_FOUND})
     find_package(LLVM 3.9 QUIET PATHS ${HIPIFY_CLANG_LLVM_DIR} NO_DEFAULT_PATH)
     if (NOT ${LLVM_FOUND})
-        message(STATUS "hipify-clang will not be built. To build it please specify absolute path to LLVM 3.8 or LLVM 3.9 package using -DHIPIFY_CLANG_LLVM_DIR")
+        message(STATUS "hipify-clang will not be built. To build it please specify absolute path to LLVM 3.8 or LLVM 3.9 package/dist using -DHIPIFY_CLANG_LLVM_DIR")
     endif()
 endif()
 if (${LLVM_FOUND})
@@ -21,12 +23,11 @@ if (${LLVM_FOUND})
     link_directories(${LLVM_LIBRARY_DIRS})
     add_definitions(${LLVM_DEFINITIONS})
     add_llvm_executable(hipify-clang src/Cuda2Hip.cpp)
-    find_program(LIT_COMMAND lit)
 
     set(CMAKE_CXX_COMPILER ${LLVM_TOOLS_BINARY_DIR}/clang++)
     set(CMAKE_C_COMPILER ${LLVM_TOOLS_BINARY_DIR}/clang)
 
-    # Link against LLVM and CLANG tools libraries
+    # Link against LLVM and CLANG libraries
     target_link_libraries(hipify-clang
         clangASTMatchers
         clangFrontend
@@ -51,22 +52,35 @@ if (${LLVM_FOUND})
         LLVMOption
         LLVMCore)
 
+if(WIN32)
+    target_link_libraries(hipify-clang version)
+endif()
+
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_CFLAGS}")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${EXTRA_CFLAGS}")
+if(MSVC)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /GR- /EHs- /EHc-")
+    set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} /SUBSYSTEM:WINDOWS")
+else()
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -pthread -fno-rtti -fvisibility-inlines-hidden")
+endif()
+
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DHIPIFY_CLANG_RES=\\\"${LLVM_LIBRARY_DIRS}/clang/${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}\\\"")
 
     install(TARGETS hipify-clang DESTINATION bin)
 
+if (HIPIFY_CLANG_TESTS)
     # tests
     set(Python_ADDITIONAL_VERSIONS 2.7)
     include(FindPythonInterp)
     if(NOT PYTHONINTERP_FOUND)
         message(FATAL_ERROR
-            "Unable to find Python interpreter, required for builds and testing\n\n"
+            "Unable to find Python interpreter, required for builds and testing.\n\n"
             "Please install Python or specify the PYTHON_EXECUTABLE CMake variable.")
     endif()
 
+    find_program(LIT_COMMAND lit)
+
     set(BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
 
     configure_file(
@@ -83,8 +97,10 @@ if (${LLVM_FOUND})
     add_custom_target(test-hipify-clang)
     add_dependencies(test-hipify-clang test-hipify)
     set_target_properties(test-hipify-clang PROPERTIES FOLDER "Tests")
+endif()
 
+if (PARENT_SCOPE)
     set(BUILD_HIPIFY_CLANG 1 PARENT_SCOPE)
 endif()
 
-# vim: ts=4:sw=4:expandtab:smartindent
+endif()