Fixes for building on Windows (#382)

* make C++ code compatible with Windows + MSVC

* added dlfcn-win32 for cross-platform dlopen

* fixed building and pip install on Windows

* fixed shared library file name under Windows

python/setup.py

@@ -24,6 +24,8 @@ def get_llvm():
     paths = [p for p in paths if p is not None]
     if paths:
       return '', ''
+    if platform.system() == "Windows":
+      return '', ''
     # download if nothing is installed
     name = 'clang+llvm-11.0.1-x86_64-linux-gnu-ubuntu-16.04'
     dir = '/tmp'
@@ -105,7 +107,7 @@ class CMakeBuild(build_ext):
         build_args = ["--config", cfg]
 
         if platform.system() == "Windows":
-            cmake_args += ["-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{}={}".format(cfg.upper(), extdir)]
+            cmake_args += ["-DCMAKE_RUNTIME_OUTPUT_DIRECTORY_{}={}".format(cfg.upper(), extdir)]
             if sys.maxsize > 2**32:
                 cmake_args += ["-A", "x64"]
             build_args += ["--", "/m"]

python/src/triton.cc

@@ -14,6 +14,7 @@
 #include <pybind11/pybind11.h>
 #include <pybind11/stl.h>
 #include <regex>
+#include <sstream>
 #include <string>
 #include "llvm/IR/Module.h"
 #include "llvm/IR/LegacyPassManager.h"