From 97bb6792e84959178bc62867684906ffd84d1e39 Mon Sep 17 00:00:00 2001
From: Sebastien Duthil <duthils@free.fr>
Date: Sat, 8 Jun 2013 19:22:09 -0400
Subject: [PATCH] modifications to allow cross-compilation to win32

---
 README.txt   |  2 ++
 src/Makefile | 31 ++++++++++++++++++++++---------
 src/udt.h    | 18 +++++++++---------
 3 files changed, 33 insertions(+), 18 deletions(-)

diff --git a/README.txt b/README.txt
index 29fbf80..e41d402 100644
--- a/README.txt
+++ b/README.txt
@@ -23,6 +23,8 @@ CONTENT:
 
 To make: 
      make -e os=XXX arch=YYY 
+Windows (cross-compilation):
+     make CXX='compiler' os=WIN32
 
 XXX: [LINUX(default), BSD, OSX] 
 YYY: [IA32(default), POWERPC, IA64, AMD64] 
diff --git a/src/Makefile b/src/Makefile
index b601263..7808cf3 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,4 +1,6 @@
-C++ = g++ -g
+ifndef CXX
+    CXX = g++
+endif
 
 ifndef os
    os = LINUX
@@ -8,7 +10,10 @@ ifndef arch
    arch = IA32
 endif
 
-CCFLAGS = -fPIC -Wall -pthread -Wextra -D$(os) #-finline-functions -O3 -fno-strict-aliasing #-msse3
+CCFLAGS = -g -fPIC -Wall -pthread -Wextra -D$(os) #-finline-functions -O3 -fno-strict-aliasing #-msse3
+ifeq ($(os), WIN32)
+CCFLAGS = -g -fPIC -Wall -pthread -Wextra -D$(os) -DUDT_EXPORTS -D_WIN32_WINNT=0x0501
+endif
 
 ifeq ($(arch), IA32)
    CCFLAGS += -DIA32
@@ -33,16 +38,24 @@ endif
 OBJS = md5.o common.o window.o list.o buffer.o packet.o channel.o queue.o ccc.o cache.o core.o epoll.o api.o
 DIR = $(shell pwd)
 
-all: libudt.so libudt.a udt
+ifneq ($(os), WIN32)
+all: libudt udt
+else
+all: libudt libudt.a udt
+endif
 
 %.o: %.cpp %.h udt.h
-	$(C++) $(CCFLAGS) $< -c
+	$(CXX) $(CCFLAGS) $< -c
 
-libudt.so: $(OBJS)
-ifneq ($(os), OSX)
-	$(C++) -shared -o $@ $^
-else
-	$(C++) -dynamiclib -o libudt.dylib -lstdc++ -lpthread -lm $^
+libudt: $(OBJS)
+ifeq ($(os), LINUX)
+	$(CXX) -shared -o libudt.so $^
+endif
+ifeq ($(os), OS_X)
+	$(CXX) -dynamiclib -o libudt.dylib -lstdc++ -lpthread -lm $^
+endif
+ifeq ($(os), WIN32)
+	$(CXX) -shared -o libudt.dll $^ -Wl,--out-implib,libudt_dll.a -L/usr/i486-mingw32/lib -lws2_32
 endif
 
 libudt.a: $(OBJS)
diff --git a/src/udt.h b/src/udt.h
index 1641c99..46d77b8 100644
--- a/src/udt.h
+++ b/src/udt.h
@@ -71,15 +71,15 @@ written by
 #ifdef WIN32
    #ifndef __MINGW__
       // Explicitly define 32-bit and 64-bit numbers
-      typedef __int32 int32_t;
-      typedef __int64 int64_t;
-      typedef unsigned __int32 uint32_t;
-      #ifndef LEGACY_WIN32
-         typedef unsigned __int64 uint64_t;
-      #else
-         // VC 6.0 does not support unsigned __int64: may cause potential problems.
-         typedef __int64 uint64_t;
-      #endif
+      /* typedef __int32 int32_t; */
+      /* typedef __int64 int64_t; */
+      /* typedef unsigned __int32 uint32_t; */
+      /* #ifndef LEGACY_WIN32 */
+      /*    typedef unsigned __int64 uint64_t; */
+      /* #else */
+      /*    // VC 6.0 does not support unsigned __int64: may cause potential problems. */
+      /*    typedef __int64 uint64_t; */
+      /* #endif */
 
       #ifdef UDT_EXPORTS
          #define UDT_API __declspec(dllexport)