diff --git a/Makefile b/Makefile
index 3406068..6ce2b4c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,15 +1,16 @@
 -include config.mk
 
-TARGET    = ddraw.dll
-LDFLAGS   = -Wl,--enable-stdcall-fixup -s -static -shared
-CFLAGS    = -Iinc -O2 -march=i486 -Wall -std=c99
-LIBS      = -lgdi32 -lwinmm -ldbghelp -lole32
+TARGET   ?= ddraw.dll
+
+LDFLAGS  ?= -Wl,--enable-stdcall-fixup -s -static -shared
+CFLAGS   ?= -Iinc -O2 -Wall -std=c99
+LIBS      = -lgdi32 -lwinmm -ldbghelp -lole32 -lMsimg32
 
 COMMIT   := $(shell git describe --match=NeVeRmAtCh --always --dirty || echo UNKNOWN)
 BRANCH   := $(shell git rev-parse --abbrev-ref HEAD || echo UNKNOWN)
 
-CMDTEST  := $(shell echo \"\")
-ifeq ($(CMDTEST),\"\")
+ECHOTEST := $(shell echo \"\")
+ifeq ($(ECHOTEST),\"\")
 	# Windows
 	HASH     := \#
 	ECOMMIT  := $(shell echo $(HASH)define GIT_COMMIT "$(COMMIT)" > inc/git.h)
@@ -20,13 +21,17 @@ else
 	EBRANCH  := $(shell echo "#define GIT_BRANCH" \"$(BRANCH)\" >> inc/git.h)
 endif
 
-CC        = i686-w64-mingw32-gcc
-WINDRES  ?= i686-w64-mingw32-windres
-
 ifdef DEBUG
 	CFLAGS   += -D _DEBUG -D _DEBUG_X
 endif
 
+ifdef _WIN32_WINNT
+	CFLAGS   += -march=i486 -D _WIN32_WINNT=$(_WIN32_WINNT)
+endif
+
+CC        = i686-w64-mingw32-gcc
+WINDRES  ?= i686-w64-mingw32-windres
+
 SRCS     := $(wildcard src/*.c) $(wildcard src/*/*.c) res.rc
 OBJS     := $(addsuffix .o, $(basename $(SRCS)))
 
diff --git a/build.cmd b/build.cmd
index 34bb56c..0348c73 100644
--- a/build.cmd
+++ b/build.cmd
@@ -10,6 +10,6 @@ set GIT6=C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\
 set PATH=C:\w64devkit\bin;%GIT1%;%GIT2%;%GIT3%;%GIT4%;%GIT5%;%GIT6%;%PATH%
 
 make clean
-make
+make _WIN32_WINNT=0x0500
 
 pause
diff --git a/build_debug.cmd b/build_debug.cmd
index 755ec1f..154ceb2 100644
--- a/build_debug.cmd
+++ b/build_debug.cmd
@@ -10,6 +10,6 @@ set GIT6=C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\
 set PATH=C:\w64devkit\bin;%GIT1%;%GIT2%;%GIT3%;%GIT4%;%GIT5%;%GIT6%;%PATH%
 
 make clean
-make DEBUG=1
+make DEBUG=1 _WIN32_WINNT=0x0500
 
 pause
diff --git a/inc/dd.h b/inc/dd.h
index 36f1ca6..b9382b1 100644
--- a/inc/dd.h
+++ b/inc/dd.h
@@ -64,6 +64,18 @@ HRESULT dd_CreateEx(GUID* lpGuid, LPVOID* lplpDD, REFIID iid, IUnknown* pUnkOute
 #define CREATE_WAITABLE_TIMER_MANUAL_RESET 0x00000001
 #endif
 
+#ifndef GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT
+#define GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT 0x00000002
+#endif
+
+#ifndef GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
+#define GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS 0x00000004
+#endif
+
+#if (_WIN32_WINNT < _WIN32_WINNT_WIN2K)
+#define GdiTransparentBlt TransparentBlt 
+#endif
+
 typedef struct SPEEDLIMITER
 {
     DWORD tick_length;
diff --git a/inc/versionhelpers.h b/inc/versionhelpers.h
index 8a59f74..bf622e6 100644
--- a/inc/versionhelpers.h
+++ b/inc/versionhelpers.h
@@ -28,6 +28,11 @@
 #define _WIN32_WINNT_WIN11                  0x0A00
 #endif
 
+#if (_WIN32_WINNT < _WIN32_WINNT_WIN2K)
+#define RtlVerifyVersionInfo(a,b,c) 1
+#define VerifyVersionInfoW(a,b,c) 0 
+#define VerSetConditionMask(a,b,c) 0
+#endif
 
 void verhelp_init();
 BOOL verhelp_verify_version(PRTL_OSVERSIONINFOEXW versionInfo, ULONG typeMask, ULONGLONG conditionMask);
diff --git a/src/debug.c b/src/debug.c
index cff87d3..8d4ba5b 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -73,7 +73,7 @@ LONG WINAPI dbg_exception_handler(EXCEPTION_POINTERS* exception)
         HMODULE mod = NULL;
         char filename[MAX_PATH] = { 0 };
 
-#if defined(_MSC_VER) /* comment this out just to keep the mingw build win2000 compatible */
+#if (_WIN32_WINNT >= _WIN32_WINNT_WINXP)
         if (GetModuleHandleExA(
             GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
             exception->ExceptionRecord->ExceptionAddress,