diff --git a/polymer/eduke32/Makefile b/polymer/eduke32/Makefile
index 4b0d53805..7c215564e 100644
--- a/polymer/eduke32/Makefile
+++ b/polymer/eduke32/Makefile
@@ -319,7 +319,7 @@ ifeq ($(PLATFORM),DARWIN)
 endif
 
 ifeq ($(PLATFORM),WINDOWS)
-    LIBS += -lFLAC -lvorbisfile -lvorbis -logg -lcompat-from-mingw-w64
+    LIBS += -lFLAC -lvorbisfile -lvorbis -logg
     LIBDIRS += -L$(AUDIOLIB_ROOT)/third-party/Windows/lib$(WINLIB)
     DUKE3D_OBJS+= gameres winbits startwin.game
     DUKE3D_EDITOR_OBJS+= buildres
diff --git a/polymer/eduke32/Makefile.msvc b/polymer/eduke32/Makefile.msvc
index 6eeaa53a5..0771121b4 100644
--- a/polymer/eduke32/Makefile.msvc
+++ b/polymer/eduke32/Makefile.msvc
@@ -98,7 +98,7 @@ ENET_CFLAGS=/I$(ENET_INC) /I$(ENET_SRC)
 AUDIOLIB_CFLAGS=/I$(AUDIOLIB_INC) /I$(AUDIOLIB_SRC) 
 
 LIBS=user32.lib gdi32.lib shell32.lib winmm.lib ws2_32.lib comctl32.lib shlwapi.lib oleaut32.lib ole32.lib imm32.lib version.lib \
-     libogg.a libvorbis.a libvorbisfile.a libvpx.a libpng_mini.a libz_mini.a libcompat-from-mingw-w64.a \
+     libogg.a libvorbis.a libvorbisfile.a libvpx.a libpng_mini.a libz_mini.a \
      dxguid.lib dsound.lib advapi32.lib libcompat-to-msvc.a
 
 !if ("$(RENDERTYPE)"=="SDL")
diff --git a/polymer/eduke32/platform/Windows/lib/32/libcompat-from-mingw-w64.a b/polymer/eduke32/platform/Windows/lib/32/libcompat-from-mingw-w64.a
deleted file mode 100644
index 3a82a4586..000000000
Binary files a/polymer/eduke32/platform/Windows/lib/32/libcompat-from-mingw-w64.a and /dev/null differ
diff --git a/polymer/eduke32/platform/Windows/lib/32/libcompat-to-msvc.a b/polymer/eduke32/platform/Windows/lib/32/libcompat-to-msvc.a
index b585978fb..e3c6507fb 100644
Binary files a/polymer/eduke32/platform/Windows/lib/32/libcompat-to-msvc.a and b/polymer/eduke32/platform/Windows/lib/32/libcompat-to-msvc.a differ
diff --git a/polymer/eduke32/platform/Windows/lib/64/libcompat-from-mingw-w64.a b/polymer/eduke32/platform/Windows/lib/64/libcompat-from-mingw-w64.a
deleted file mode 100644
index d4ab1e1a3..000000000
Binary files a/polymer/eduke32/platform/Windows/lib/64/libcompat-from-mingw-w64.a and /dev/null differ
diff --git a/polymer/eduke32/platform/Windows/lib/64/libcompat-to-msvc.a b/polymer/eduke32/platform/Windows/lib/64/libcompat-to-msvc.a
index 477b7ddd0..5428547cc 100644
Binary files a/polymer/eduke32/platform/Windows/lib/64/libcompat-to-msvc.a and b/polymer/eduke32/platform/Windows/lib/64/libcompat-to-msvc.a differ
diff --git a/polymer/eduke32/platform/Windows/src/compat-from-mingw-w64/Makefile b/polymer/eduke32/platform/Windows/src/compat-from-mingw-w64/Makefile
deleted file mode 100644
index d477f1b2d..000000000
--- a/polymer/eduke32/platform/Windows/src/compat-from-mingw-w64/Makefile
+++ /dev/null
@@ -1,18 +0,0 @@
-
-o=o
-
-NAME:=libcompat-from-mingw-w64
-
-
-%.$o: %.c
-	gcc -Wall -Wextra -O3 -c $< -o $@
-
-$(NAME).a: vsnprintf.$o
-	ar rc $@ $^
-	ranlib $@
-
-all : $(NAME).a
-	@ls -l $^
-
-clean:
-	-rm -f *.a *.o
diff --git a/polymer/eduke32/platform/Windows/src/compat-from-mingw-w64/vsnprintf.c b/polymer/eduke32/platform/Windows/src/compat-from-mingw-w64/vsnprintf.c
deleted file mode 100644
index e4701483c..000000000
--- a/polymer/eduke32/platform/Windows/src/compat-from-mingw-w64/vsnprintf.c
+++ /dev/null
@@ -1,13 +0,0 @@
-/**
- * This file has no copyright assigned and is placed in the Public Domain.
- * This file is part of the mingw-w64 runtime package.
- * No warranty is given; refer to the file DISCLAIMER.PD within this package.
- */
-#define __CRT__NO_INLINE
-#include <stdarg.h>
-#include <stdio.h>
-
-int __cdecl __ms_vsnprintf (char *s,size_t n,const char *format,va_list arg)
-{
-    return _vsnprintf(s, n, format, arg);
-}
diff --git a/polymer/eduke32/platform/Windows/src/compat-to-msvc/Makefile b/polymer/eduke32/platform/Windows/src/compat-to-msvc/Makefile
index b5023fdd5..6928f9825 100644
--- a/polymer/eduke32/platform/Windows/src/compat-to-msvc/Makefile
+++ b/polymer/eduke32/platform/Windows/src/compat-to-msvc/Makefile
@@ -7,12 +7,16 @@ NAME:=libcompat-to-msvc
 %.$o: %.c
 	gcc -Wall -Wextra -O3 -c $< -o $@
 
-$(NAME).a: dll_math.$o io_math.$o
+%.$o: %.S
+	gcc -c $< -o $@
+
+OBJS=dll_math.$o io_math.$o dll_dependency.$o vsnprintf.$o
+
+.INTERMEDIATE: $(OBJS)
+
+$(NAME).a: $(OBJS)
 	ar rc $@ $^
 	ranlib $@
 
-all : $(NAME).a
-	@ls -l $^
-
 clean:
 	-rm -f *.a *.o
diff --git a/polymer/eduke32/platform/Windows/src/compat-to-msvc/dll_dependency.S b/polymer/eduke32/platform/Windows/src/compat-to-msvc/dll_dependency.S
new file mode 100644
index 000000000..e69f86be6
--- /dev/null
+++ b/polymer/eduke32/platform/Windows/src/compat-to-msvc/dll_dependency.S
@@ -0,0 +1,88 @@
+/* Implementation for gcc's internal stack-allocation routines.  */
+.global ___chkstk
+.global __alloca
+
+.global ___chkstk_ms
+___chkstk_ms:
+#ifdef _WIN64
+	pushq	%rax
+	pushq	%rcx
+	cmpq	$0x1000, %rax
+	leaq	24(%rsp), %rcx
+	jb	.Lchkstk_ms_end
+.Lchkstk_ms_loop:
+	subq	$0x1000, %rcx
+	subq	$0x1000, %rax
+	orq	$0x0, (%rcx)
+	cmpq	$0x1000, %rax
+	ja	.Lchkstk_ms_loop
+.Lchkstk_ms_end:
+	subq	%rax, %rcx
+	orq	$0x0, (%rcx)
+	popq	%rcx
+	popq	%rax
+	ret
+#else
+	pushl	%eax
+	pushl	%ecx
+	cmpl	$0x1000, %eax
+	leal	12(%esp), %ecx
+	jb	chkstk_ms_end
+chkstk_ms_loop:
+	subl	$0x1000, %ecx
+	subl	$0x1000, %eax
+	orl	$0x0, (%ecx)
+	cmpl	$0x1000, %eax
+	ja	chkstk_ms_loop
+chkstk_ms_end:
+	subl	%eax, %ecx
+	orl	$0x0, (%ecx)
+	popl	%ecx
+	popl	%eax
+	ret
+#endif
+
+#ifdef _WIN64
+__alloca:
+	movq	%rcx, %rax
+.align	4
+___chkstk:
+	popq	%r11
+	movq	%rsp, %r10
+	cmpq	$0x1000, %rax
+	jb	.Lchkstk_end
+.Lchkstk_loop:
+	subq	$0x1000, %r10
+	subq	$0x1000, %rax
+	orl	$0x0, (%r10)
+	cmpq	$0x1000, %rax
+	ja	.Lchkstk_loop
+.Lchkstk_end:
+	subq	%rax, %r10
+	movq	%rsp, %rax
+	orl	$0x0, (%r10)
+	movq	%r10, %rsp
+	pushq	%r11
+	ret
+#else
+___chkstk:
+__alloca:
+	pushl	%ecx
+	leal	8(%esp), %ecx
+	cmpl	$0x1000, %eax		/* > 4k ?*/
+	jb	chkstk_end
+chkstk_loop:
+	subl	$0x1000, %ecx
+	subl	$0x1000, %eax
+	orl	$0x0, (%ecx)
+	cmpl	$0x1000, %eax
+	ja	chkstk_loop
+chkstk_end:
+	subl	%eax, %ecx
+	orl	$0x0, (%ecx)
+	movl	%esp, %eax
+	movl	%ecx, %esp
+	movl	(%eax), %ecx
+	pushl	4(%eax)
+	ret
+#endif
diff --git a/polymer/eduke32/platform/Windows/src/compat-to-msvc/vsnprintf.c b/polymer/eduke32/platform/Windows/src/compat-to-msvc/vsnprintf.c
new file mode 100644
index 000000000..7992984fc
--- /dev/null
+++ b/polymer/eduke32/platform/Windows/src/compat-to-msvc/vsnprintf.c
@@ -0,0 +1,19 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the mingw-w64 runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+#define __CRT__NO_INLINE
+#include <stdarg.h>
+#include <stdlib.h>
+
+extern int __cdecl _vsnprintf(char * __restrict__, size_t, const char * __restrict__, va_list);
+
+int __cdecl __ms_vsnprintf (char * __restrict__ s, size_t n, const char * __restrict__ format, va_list arg)
+{
+    return _vsnprintf(s, n, format, arg);
+}
+int __cdecl __mingw_vsnprintf (char * __restrict__ s, size_t n, const char * __restrict__ format, va_list arg)
+{
+    return _vsnprintf(s, n, format, arg);
+}