diff --git a/PCbuild/_hashlib.vcproj b/PCbuild/_hashlib.vcproj
index 5184e45..dee8dda 100644
--- a/PCbuild/_hashlib.vcproj
+++ b/PCbuild/_hashlib.vcproj
@@ -27,7 +27,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -89,7 +88,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -153,7 +151,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -216,7 +213,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -280,7 +276,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -343,7 +338,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -408,7 +402,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -471,7 +464,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
diff --git a/PCbuild/_ssl.vcproj b/PCbuild/_ssl.vcproj
index d1fe19f..1e65adf 100644
--- a/PCbuild/_ssl.vcproj
+++ b/PCbuild/_ssl.vcproj
@@ -27,7 +27,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -89,7 +88,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -153,7 +151,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -216,7 +213,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -280,7 +276,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -343,7 +338,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -408,7 +402,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
@@ -471,7 +464,6 @@
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
-				CommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
 			/>
 			<Tool
 				Name="VCCustomBuildTool"
diff --git a/PCbuild/build_ssl.py b/PCbuild/build_ssl.py
index cfcb0ac..573bf4b 100644
--- a/PCbuild/build_ssl.py
+++ b/PCbuild/build_ssl.py
@@ -23,7 +23,6 @@
 # python.exe build_ssl.py Release x64
 # python.exe build_ssl.py Release Win32
 
-from __future__ import with_statement
 import os, sys, re, shutil
 
 # Find all "foo.exe" files on the PATH.
@@ -122,7 +121,6 @@
     """
     if not os.path.isfile(makefile):
         return
-    fin = open(makefile)
     with open(makefile) as fin:
         lines = fin.readlines()
     with open(makefile, 'w') as fout:
@@ -148,6 +146,22 @@
     print(do_script)
     os.system(do_script)
 
+def cmp(f1, f2):
+    bufsize = 1024 * 8
+    with open(f1, 'rb') as fp1, open(f2, 'rb') as fp2:
+        while True:
+            b1 = fp1.read(bufsize)
+            b2 = fp2.read(bufsize)
+            if b1 != b2:
+                return False
+            if not b1:
+                return True
+
+def copy(src, dst):
+    if os.path.isfile(dst) and cmp(src, dst):
+        return
+    shutil.copy(src, dst)
+
 def main():
     build_all = "-a" in sys.argv
     if sys.argv[1] == "Release":
@@ -224,8 +238,8 @@
             if arch == "amd64":
                 create_makefile64(makefile, m32)
             fix_makefile(makefile)
-            shutil.copy(r"crypto\buildinf.h", r"crypto\buildinf_%s.h" % arch)
-            shutil.copy(r"crypto\opensslconf.h", r"crypto\opensslconf_%s.h" % arch)
+            copy(r"crypto\buildinf.h", r"crypto\buildinf_%s.h" % arch)
+            copy(r"crypto\opensslconf.h", r"crypto\opensslconf_%s.h" % arch)
 
         # If the assembler files don't exist in tmpXX, copy them there
         if perl is None:
@@ -243,8 +257,8 @@
                 print("ml64 assembler has failed.")
                 sys.exit(rc)
 
-        shutil.copy(r"crypto\buildinf_%s.h" % arch, r"crypto\buildinf.h")
-        shutil.copy(r"crypto\opensslconf_%s.h" % arch, r"crypto\opensslconf.h")
+        copy(r"crypto\buildinf_%s.h" % arch, r"crypto\buildinf.h")
+        copy(r"crypto\opensslconf_%s.h" % arch, r"crypto\opensslconf.h")
 
         #makeCommand = "nmake /nologo PERL=\"%s\" -f \"%s\"" %(perl, makefile)
         makeCommand = "nmake /nologo -f \"%s\"" % makefile
diff --git a/PCbuild/pcbuild.sln b/PCbuild/pcbuild.sln
index 1f6c6fb..956a7ea 100644
--- a/PCbuild/pcbuild.sln
+++ b/PCbuild/pcbuild.sln
@@ -74,6 +74,7 @@
 		{B11D750F-CD1F-4A96-85CE-E69A5C5259F9} = {B11D750F-CD1F-4A96-85CE-E69A5C5259F9}
 		{86937F53-C189-40EF-8CE8-8759D8E7D480} = {86937F53-C189-40EF-8CE8-8759D8E7D480}
 		{CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26} = {CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26}
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0} = {E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}
 	EndProjectSection
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_testcapi", "_testcapi.vcproj", "{6901D91C-6E48-4BB7-9FEC-700C8131DF1D}"
@@ -112,6 +113,7 @@
 	ProjectSection(ProjectDependencies) = postProject
 		{B11D750F-CD1F-4A96-85CE-E69A5C5259F9} = {B11D750F-CD1F-4A96-85CE-E69A5C5259F9}
 		{CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26} = {CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26}
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0} = {E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}
 	EndProjectSection
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "sqlite3", "sqlite3.vcproj", "{A1A295E5-463C-437F-81CA-1F32367685DA}"
@@ -124,6 +126,11 @@
 		{CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26} = {CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ssl", "ssl.vcproj", "{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}"
+	ProjectSection(ProjectDependencies) = postProject
+		{B11D750F-CD1F-4A96-85CE-E69A5C5259F9} = {B11D750F-CD1F-4A96-85CE-E69A5C5259F9}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "kill_python", "kill_python.vcproj", "{6DE10744-E396-40A5-B4E2-1B69AA7C8D31}"
 EndProject
 Global
@@ -514,6 +521,22 @@
 		{9E48B300-37D1-11DD-8C41-005056C00008}.Release|Win32.Build.0 = Release|Win32
 		{9E48B300-37D1-11DD-8C41-005056C00008}.Release|x64.ActiveCfg = Release|x64
 		{9E48B300-37D1-11DD-8C41-005056C00008}.Release|x64.Build.0 = Release|x64
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.Debug|Win32.ActiveCfg = Debug|Win32
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.Debug|Win32.Build.0 = Debug|Win32
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.Debug|x64.ActiveCfg = Debug|x64
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.Debug|x64.Build.0 = Debug|x64
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.PGInstrument|Win32.ActiveCfg = PGInstrument|Win32
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.PGInstrument|Win32.Build.0 = PGInstrument|Win32
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.PGInstrument|x64.ActiveCfg = PGInstrument|x64
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.PGInstrument|x64.Build.0 = PGInstrument|x64
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.PGUpdate|Win32.ActiveCfg = PGUpdate|Win32
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.PGUpdate|Win32.Build.0 = PGUpdate|Win32
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.PGUpdate|x64.ActiveCfg = PGUpdate|x64
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.PGUpdate|x64.Build.0 = PGUpdate|x64
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.Release|Win32.ActiveCfg = Release|Win32
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.Release|Win32.Build.0 = Release|Win32
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.Release|x64.ActiveCfg = Release|x64
+		{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}.Release|x64.Build.0 = Release|x64
 		{6DE10744-E396-40A5-B4E2-1B69AA7C8D31}.Debug|Win32.ActiveCfg = Debug|Win32
 		{6DE10744-E396-40A5-B4E2-1B69AA7C8D31}.Debug|Win32.Build.0 = Debug|Win32
 		{6DE10744-E396-40A5-B4E2-1B69AA7C8D31}.Debug|x64.ActiveCfg = Debug|x64
diff --git a/PCbuild/ssl.vcproj b/PCbuild/ssl.vcproj
new file mode 100644
index 0000000..ec2be30
--- /dev/null
+++ b/PCbuild/ssl.vcproj
@@ -0,0 +1,189 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="9,00"
+	Name="ssl"
+	ProjectGUID="{E5B04CC0-EB4C-42AB-B4DC-18EF95F864B0}"
+	RootNamespace="ssl"
+	Keyword="MakeFileProj"
+	TargetFrameworkVersion="196613"
+	>
+	<Platforms>
+		<Platform
+			Name="Win32"
+		/>
+		<Platform
+			Name="x64"
+		/>
+	</Platforms>
+	<ToolFiles>
+	</ToolFiles>
+	<Configurations>
+		<Configuration
+			Name="Debug|Win32"
+			ConfigurationType="0"
+			InheritedPropertySheets=".\pyd_d.vsprops"
+			CharacterSet="0"
+			>
+			<Tool
+				Name="VCNMakeTool"
+				BuildCommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
+				ReBuildCommandLine=""
+				CleanCommandLine=""
+				Output=""
+				PreprocessorDefinitions=""
+				IncludeSearchPath=""
+				ForcedIncludes=""
+				AssemblySearchPath=""
+				ForcedUsingAssemblies=""
+				CompileAsManaged=""
+			/>
+		</Configuration>
+		<Configuration
+			Name="Debug|x64"
+			ConfigurationType="0"
+			InheritedPropertySheets=".\pyd_d.vsprops;.\x64.vsprops"
+			CharacterSet="0"
+			>
+			<Tool
+				Name="VCNMakeTool"
+				BuildCommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
+				ReBuildCommandLine=""
+				CleanCommandLine=""
+				Output=""
+				PreprocessorDefinitions=""
+				IncludeSearchPath=""
+				ForcedIncludes=""
+				AssemblySearchPath=""
+				ForcedUsingAssemblies=""
+				CompileAsManaged=""
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|Win32"
+			ConfigurationType="0"
+			InheritedPropertySheets=".\pyd.vsprops"
+			CharacterSet="0"
+			>
+			<Tool
+				Name="VCNMakeTool"
+				BuildCommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
+				ReBuildCommandLine=""
+				CleanCommandLine=""
+				Output=""
+				PreprocessorDefinitions=""
+				IncludeSearchPath=""
+				ForcedIncludes=""
+				AssemblySearchPath=""
+				ForcedUsingAssemblies=""
+				CompileAsManaged=""
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|x64"
+			ConfigurationType="0"
+			InheritedPropertySheets=".\pyd.vsprops;.\x64.vsprops"
+			CharacterSet="0"
+			>
+			<Tool
+				Name="VCNMakeTool"
+				BuildCommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
+				ReBuildCommandLine=""
+				CleanCommandLine=""
+				Output=""
+				PreprocessorDefinitions=""
+				IncludeSearchPath=""
+				ForcedIncludes=""
+				AssemblySearchPath=""
+				ForcedUsingAssemblies=""
+				CompileAsManaged=""
+			/>
+		</Configuration>
+		<Configuration
+			Name="PGInstrument|Win32"
+			ConfigurationType="0"
+			InheritedPropertySheets=".\pyd.vsprops;.\pginstrument.vsprops"
+			CharacterSet="0"
+			>
+			<Tool
+				Name="VCNMakeTool"
+				BuildCommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
+				ReBuildCommandLine=""
+				CleanCommandLine=""
+				Output=""
+				PreprocessorDefinitions=""
+				IncludeSearchPath=""
+				ForcedIncludes=""
+				AssemblySearchPath=""
+				ForcedUsingAssemblies=""
+				CompileAsManaged=""
+			/>
+		</Configuration>
+		<Configuration
+			Name="PGInstrument|x64"
+			ConfigurationType="0"
+			InheritedPropertySheets=".\pyd.vsprops;.\x64.vsprops;.\pginstrument.vsprops"
+			CharacterSet="0"
+			>
+			<Tool
+				Name="VCNMakeTool"
+				BuildCommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
+				ReBuildCommandLine=""
+				CleanCommandLine=""
+				Output=""
+				PreprocessorDefinitions=""
+				IncludeSearchPath=""
+				ForcedIncludes=""
+				AssemblySearchPath=""
+				ForcedUsingAssemblies=""
+				CompileAsManaged=""
+			/>
+		</Configuration>
+		<Configuration
+			Name="PGUpdate|Win32"
+			ConfigurationType="0"
+			InheritedPropertySheets=".\pyd.vsprops;.\pgupdate.vsprops"
+			CharacterSet="0"
+			>
+			<Tool
+				Name="VCNMakeTool"
+				BuildCommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
+				ReBuildCommandLine=""
+				CleanCommandLine=""
+				Output=""
+				PreprocessorDefinitions=""
+				IncludeSearchPath=""
+				ForcedIncludes=""
+				AssemblySearchPath=""
+				ForcedUsingAssemblies=""
+				CompileAsManaged=""
+			/>
+		</Configuration>
+		<Configuration
+			Name="PGUpdate|x64"
+			ConfigurationType="0"
+			InheritedPropertySheets=".\pyd.vsprops;.\x64.vsprops;.\pgupdate.vsprops"
+			CharacterSet="0"
+			>
+			<Tool
+				Name="VCNMakeTool"
+				BuildCommandLine="cd &quot;$(SolutionDir)&quot;&#x0D;&#x0A;&quot;$(PythonExe)&quot; build_ssl.py Release $(PlatformName) -a&#x0D;&#x0A;"
+				ReBuildCommandLine=""
+				CleanCommandLine=""
+				Output=""
+				PreprocessorDefinitions=""
+				IncludeSearchPath=""
+				ForcedIncludes=""
+				AssemblySearchPath=""
+				ForcedUsingAssemblies=""
+				CompileAsManaged=""
+			/>
+		</Configuration>
+	</Configurations>
+	<References>
+	</References>
+	<Files>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>