--- Python-3.6.2rc1/Makefile.pre.in.orig	2017-06-18 14:44:47.870383000 +0200
+++ Python-3.6.2rc1/Makefile.pre.in	2017-06-18 14:47:43.823492600 +0200
@@ -695,19 +695,19 @@
 
 Programs/_freeze_importlib.o: Programs/_freeze_importlib.c Makefile
 
-Programs/_freeze_importlib: Programs/_freeze_importlib.o $(LIBRARY_OBJS_OMIT_FROZEN)
+Programs/_freeze_importlib$(EXE): Programs/_freeze_importlib.o $(LIBRARY_OBJS_OMIT_FROZEN)
 	$(LINKCC) $(PY_LDFLAGS) -o $@ Programs/_freeze_importlib.o $(LIBRARY_OBJS_OMIT_FROZEN) $(LIBS) $(MODLIBS) $(SYSLIBS) $(LDLAST)
 
 .PHONY: regen-importlib
-regen-importlib: Programs/_freeze_importlib
+regen-importlib: Programs/_freeze_importlib$(EXE)
 	# Regenerate Python/importlib_external.h
 	# from Lib/importlib/_bootstrap_external.py using _freeze_importlib
-	./Programs/_freeze_importlib \
+	./Programs/_freeze_importlib$(EXE) \
 	    $(srcdir)/Lib/importlib/_bootstrap_external.py \
 	    $(srcdir)/Python/importlib_external.h
 	# Regenerate Python/importlib.h from Lib/importlib/_bootstrap.py
 	# using _freeze_importlib
-	./Programs/_freeze_importlib \
+	./Programs/_freeze_importlib$(EXE) \
 	    $(srcdir)/Lib/importlib/_bootstrap.py \
 	    $(srcdir)/Python/importlib.h
 
@@ -1631,7 +1631,7 @@
 	find build -name '*.py[co]' -exec rm -f {} ';' || true
 	-rm -f pybuilddir.txt
 	-rm -f Lib/lib2to3/*Grammar*.pickle
-	-rm -f Programs/_testembed Programs/_freeze_importlib
+	-rm -f Programs/_testembed Programs/_freeze_importlib$(EXE)
 	-find build -type f -a ! -name '*.gc??' -exec rm -f {} ';'
 	-rm -f Include/pydtrace_probes.h
 
diff -Naur Python-3.5.2-orig/Programs/_freeze_importlib.c Python-3.5.2/Programs/_freeze_importlib.c
--- Python-3.5.2-orig/Programs/_freeze_importlib.c	2016-06-26 00:38:38.000000000 +0300
+++ Python-3.5.2/Programs/_freeze_importlib.c	2016-07-12 14:22:31.403800700 +0300
@@ -20,7 +20,7 @@
     {0, 0, 0} /* sentinel */
 };
 
-#ifndef MS_WINDOWS
+#ifndef _MSC_VER
 /* On Windows, this links with the regular pythonXY.dll, so this variable comes
    from frozen.obj. In the Makefile, frozen.o is not linked into this executable,
    so we define the variable here. */