diff --git a/libssh2/win32/libssh2.vcxproj b/libssh2/win32/libssh2.vcxproj
index 6c69af68f..c4375ae8f 100644
--- a/libssh2/win32/libssh2.vcxproj
+++ b/libssh2/win32/libssh2.vcxproj
@@ -89,7 +89,7 @@
       <OutputFile>.\Release_dll\libssh2.dll</OutputFile>
       <ImportLibrary>.\Release_dll\libssh2.lib</ImportLibrary>
       <AdditionalDependencies>ws2_32.lib;libeay32.lib;zlibwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>..\..\libz\contrib\vstudio\vc12\x86\ZlibDllRelease;..\..\..\nmap-mswin32-aux\OpenSSL\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\..\libz\contrib\vstudio\vc12\x86\ZlibDllReleaseWithoutAsm;..\..\..\nmap-mswin32-aux\OpenSSL\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
@@ -135,7 +135,7 @@
       <OutputFile>.\Debug_dll\libssh2.dll</OutputFile>
       <ImportLibrary>.\Debug_dll\libssh2.lib</ImportLibrary>
       <AdditionalDependencies>ws2_32.lib;libeay32.lib;zlibwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>..\..\..\nmap-mswin32-aux\OpenSSL\lib;..\..\libz\contrib\vstudio\vc12\x86\ZlibDllDebug;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\..\..\nmap-mswin32-aux\OpenSSL\lib;..\..\libz\contrib\vstudio\vc12\x86\ZlibDllDebugWithoutAsm;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
diff --git a/libz/contrib/vstudio/vc12/zlibvc.vcxproj b/libz/contrib/vstudio/vc12/zlibvc.vcxproj
index ab2b6c360..090871fc8 100644
--- a/libz/contrib/vstudio/vc12/zlibvc.vcxproj
+++ b/libz/contrib/vstudio/vc12/zlibvc.vcxproj
@@ -1,6 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="DebugWithoutAsm|Win32">
+      <Configuration>DebugWithoutAsm</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="DebugWithoutAsm|x64">
+      <Configuration>DebugWithoutAsm</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
     <ProjectConfiguration Include="Debug|Itanium">
       <Configuration>Debug</Configuration>
       <Platform>Itanium</Platform>
@@ -60,6 +68,12 @@
     <PlatformToolset>v120</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Win32'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <PlatformToolset>v120</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
@@ -77,6 +91,11 @@
     <UseOfMfc>false</UseOfMfc>
     <PlatformToolset>v120</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Itanium'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <PlatformToolset>v120</PlatformToolset>
+  </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
@@ -94,6 +113,11 @@
     <UseOfMfc>false</UseOfMfc>
     <PlatformToolset>v120</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|x64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <PlatformToolset>v120</PlatformToolset>
+  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>
@@ -106,6 +130,9 @@
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
@@ -115,6 +142,9 @@
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Itanium'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
@@ -124,13 +154,20 @@
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup>
     <_ProjectFileVersion>10.0.30128.1</_ProjectFileVersion>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">x86\ZlibDll$(Configuration)\</OutDir>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Win32'">x86\ZlibDll$(Configuration)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">x86\ZlibDll$(Configuration)\Tmp\</IntDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Win32'">x86\ZlibDll$(Configuration)\Tmp\</IntDir>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</LinkIncremental>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Win32'">true</LinkIncremental>
     <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</GenerateManifest>
+    <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Win32'">false</GenerateManifest>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">x86\ZlibDll$(Configuration)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">x86\ZlibDll$(Configuration)\Tmp\</IntDir>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">false</LinkIncremental>
@@ -140,13 +177,21 @@
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</LinkIncremental>
     <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</GenerateManifest>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">x64\ZlibDll$(Configuration)\</OutDir>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|x64'">x64\ZlibDll$(Configuration)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">x64\ZlibDll$(Configuration)\Tmp\</IntDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|x64'">x64\ZlibDll$(Configuration)\Tmp\</IntDir>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</LinkIncremental>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|x64'">true</LinkIncremental>
     <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</GenerateManifest>
+    <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|x64'">false</GenerateManifest>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">ia64\ZlibDll$(Configuration)\</OutDir>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Itanium'">ia64\ZlibDll$(Configuration)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">ia64\ZlibDll$(Configuration)\Tmp\</IntDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Itanium'">ia64\ZlibDll$(Configuration)\Tmp\</IntDir>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</LinkIncremental>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Itanium'">true</LinkIncremental>
     <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">false</GenerateManifest>
+    <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Itanium'">false</GenerateManifest>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|x64'">x64\ZlibDll$(Configuration)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|x64'">x64\ZlibDll$(Configuration)\Tmp\</IntDir>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|x64'">false</LinkIncremental>
@@ -164,14 +209,23 @@
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">false</LinkIncremental>
     <GenerateManifest Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">false</GenerateManifest>
     <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">AllRules.ruleset</CodeAnalysisRuleSet>
+    <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Itanium'">AllRules.ruleset</CodeAnalysisRuleSet>
     <CodeAnalysisRules Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'" />
+    <CodeAnalysisRules Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Itanium'" />
     <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'" />
+    <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Itanium'" />
     <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">AllRules.ruleset</CodeAnalysisRuleSet>
+    <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Win32'">AllRules.ruleset</CodeAnalysisRuleSet>
     <CodeAnalysisRules Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" />
+    <CodeAnalysisRules Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Win32'" />
     <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" />
+    <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Win32'" />
     <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">AllRules.ruleset</CodeAnalysisRuleSet>
+    <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|x64'">AllRules.ruleset</CodeAnalysisRuleSet>
     <CodeAnalysisRules Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" />
+    <CodeAnalysisRules Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|x64'" />
     <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" />
+    <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|x64'" />
     <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">AllRules.ruleset</CodeAnalysisRuleSet>
     <CodeAnalysisRules Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'" />
     <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'" />
@@ -191,9 +245,11 @@
     <CodeAnalysisRules Condition="'$(Configuration)|$(Platform)'=='Release|x64'" />
     <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='Release|x64'" />
     <TargetName Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">zlibwapi</TargetName>
+    <TargetName Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Win32'">zlibwapi</TargetName>
     <TargetName Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">zlibwapi</TargetName>
     <TargetName Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">zlibwapi</TargetName>
     <TargetName Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">zlibwapi</TargetName>
+    <TargetName Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|x64'">zlibwapi</TargetName>
     <TargetName Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|x64'">zlibwapi</TargetName>
     <TargetName Condition="'$(Configuration)|$(Platform)'=='Release|x64'">zlibwapi</TargetName>
   </PropertyGroup>
@@ -248,6 +304,52 @@
 bld_ml32.bat</Command>
     </PreBuildEvent>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Win32'">
+    <Midl>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MkTypLibCompatible>true</MkTypLibCompatible>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <TargetEnvironment>Win32</TargetEnvironment>
+      <TypeLibraryName>$(OutDir)zlibvc.tlb</TypeLibraryName>
+    </Midl>
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ExceptionHandling>
+      </ExceptionHandling>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <BufferSecurityCheck>false</BufferSecurityCheck>
+      <PrecompiledHeaderOutputFile>$(IntDir)zlibvc.pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
+      <ObjectFileName>$(IntDir)</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)</ProgramDataBaseFileName>
+      <BrowseInformation>
+      </BrowseInformation>
+      <WarningLevel>Level3</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <ResourceCompile>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <Culture>0x040c</Culture>
+    </ResourceCompile>
+    <Link>
+      <AdditionalOptions>/MACHINE:I386 %(AdditionalOptions)</AdditionalOptions>
+      <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <ModuleDefinitionFile>.\zlibvc.def</ModuleDefinitionFile>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <ProgramDatabaseFile>$(OutDir)zlibwapi.pdb</ProgramDatabaseFile>
+      <GenerateMapFile>true</GenerateMapFile>
+      <MapFileName>$(OutDir)zlibwapi.map</MapFileName>
+      <SubSystem>Windows</SubSystem>
+      <RandomizedBaseAddress>false</RandomizedBaseAddress>
+      <DataExecutionPrevention>
+      </DataExecutionPrevention>
+      <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
+    </Link>
+  </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">
     <Midl>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -258,7 +360,7 @@ bld_ml32.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -398,6 +500,49 @@ bld_ml32.bat</Command>
 bld_ml64.bat</Command>
     </PreBuildEvent>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|x64'">
+    <Midl>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MkTypLibCompatible>true</MkTypLibCompatible>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <TargetEnvironment>X64</TargetEnvironment>
+      <TypeLibraryName>$(OutDir)zlibvc.tlb</TypeLibraryName>
+    </Midl>
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;ASMV;ASMINF;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ExceptionHandling>
+      </ExceptionHandling>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <BufferSecurityCheck>false</BufferSecurityCheck>
+      <PrecompiledHeaderOutputFile>$(IntDir)zlibvc.pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
+      <ObjectFileName>$(IntDir)</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)</ProgramDataBaseFileName>
+      <BrowseInformation>
+      </BrowseInformation>
+      <WarningLevel>Level3</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <ResourceCompile>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <Culture>0x040c</Culture>
+    </ResourceCompile>
+    <Link>
+      <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <ModuleDefinitionFile>.\zlibvc.def</ModuleDefinitionFile>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <ProgramDatabaseFile>$(OutDir)zlibwapi.pdb</ProgramDatabaseFile>
+      <GenerateMapFile>true</GenerateMapFile>
+      <MapFileName>$(OutDir)zlibwapi.map</MapFileName>
+      <SubSystem>Windows</SubSystem>
+      <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
+      <TargetMachine>MachineX64</TargetMachine>
+    </Link>
+  </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">
     <Midl>
       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -441,6 +586,49 @@ bld_ml64.bat</Command>
       <TargetMachine>MachineIA64</TargetMachine>
     </Link>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Itanium'">
+    <Midl>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MkTypLibCompatible>true</MkTypLibCompatible>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <TargetEnvironment>Itanium</TargetEnvironment>
+      <TypeLibraryName>$(OutDir)zlibvc.tlb</TypeLibraryName>
+    </Midl>
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ExceptionHandling>
+      </ExceptionHandling>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <BufferSecurityCheck>false</BufferSecurityCheck>
+      <PrecompiledHeaderOutputFile>$(IntDir)zlibvc.pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
+      <ObjectFileName>$(IntDir)</ObjectFileName>
+      <ProgramDataBaseFileName>$(OutDir)</ProgramDataBaseFileName>
+      <BrowseInformation>
+      </BrowseInformation>
+      <WarningLevel>Level3</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <ResourceCompile>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <Culture>0x040c</Culture>
+    </ResourceCompile>
+    <Link>
+      <OutputFile>$(OutDir)zlibwapi.dll</OutputFile>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <ModuleDefinitionFile>.\zlibvc.def</ModuleDefinitionFile>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <ProgramDatabaseFile>$(OutDir)zlibwapi.pdb</ProgramDatabaseFile>
+      <GenerateMapFile>true</GenerateMapFile>
+      <MapFileName>$(OutDir)zlibwapi.map</MapFileName>
+      <SubSystem>Windows</SubSystem>
+      <ImportLibrary>$(OutDir)zlibwapi.lib</ImportLibrary>
+      <TargetMachine>MachineIA64</TargetMachine>
+    </Link>
+  </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|x64'">
     <Midl>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -451,7 +639,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -496,7 +684,7 @@ bld_ml64.bat</Command>
     </Midl>
     <ClCompile>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..;..\..\masmx86;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <ExceptionHandling>
@@ -638,7 +826,9 @@ bld_ml64.bat</Command>
     <ClCompile Include="..\..\..\infback.c" />
     <ClCompile Include="..\..\masmx64\inffas8664.c">
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Itanium'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='DebugWithoutAsm|Win32'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Win32'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">true</ExcludedFromBuild>
@@ -689,4 +879,4 @@ bld_ml64.bat</Command>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/mswin32/Makefile b/mswin32/Makefile
index 5c090e52f..b6cebe33c 100644
--- a/mswin32/Makefile
+++ b/mswin32/Makefile
@@ -16,7 +16,7 @@ SIGNTOOL_SUBST = $(shell echo '"$(SIGNTOOL)" $(SIGNTOOL_ARGS)' | sed -e 's/"/$$\
 
 PRODUCT_NAME=Nmap
 PLATFORM=Win32
-BASE_CONFIG=Release
+BASE_CONFIG ?= Release
 VCCONFIG=$(BASE_CONFIG)
 NSIS_DEFINES=
 ifdef NMAP_OEM
@@ -41,7 +41,7 @@ stage-nmap: build-nmap LICENSE
 # error on startup: 0xc0000022.
 	cmd /c copy $(subst /,\\,$(NMAP_MSWIN32_AUX))\\OpenSSL\\bin\\*.dll nmap-$(NMAP_VERSION)
 	cmd /c copy ..\\libssh2\\win32\\$(BASE_CONFIG)_dll\\libssh2.dll nmap-$(NMAP_VERSION)
-	cmd /c copy ..\\libz\\contrib\\vstudio\\vc12\\x86\\ZlibDll$(BASE_CONFIG)\\zlibwapi.dll nmap-$(NMAP_VERSION)
+	cmd /c copy ..\\libz\\contrib\\vstudio\\vc12\\x86\\ZlibDll$(BASE_CONFIG)WithoutAsm\\zlibwapi.dll nmap-$(NMAP_VERSION)
 	mkdir nmap-$(NMAP_VERSION)/scripts
 	cp -f $(NSE_FILES) nmap-$(NMAP_VERSION)/scripts/
 	for f in `cd .. && find nselib -name .svn -prune -o -type d -print`; do \
diff --git a/mswin32/nmap.sln b/mswin32/nmap.sln
index 986d5abe3..05ea1e6d8 100644
--- a/mswin32/nmap.sln
+++ b/mswin32/nmap.sln
@@ -194,7 +194,6 @@ Global
 		{A7BE3D76-F20C-40C5-8986-DE4028B3B57D}.ReleaseWithoutAsm|Win32.Build.0 = Release|Win32
 		{A7BE3D76-F20C-40C5-8986-DE4028B3B57D}.ReleaseWithoutAsm|x64.ActiveCfg = Release|Win32
 		{BBF27339-C7B6-4F52-B742-897796C1F13B}.Debug|Win32.ActiveCfg = Debug|Win32
-		{BBF27339-C7B6-4F52-B742-897796C1F13B}.Debug|Win32.Build.0 = Debug|Win32
 		{BBF27339-C7B6-4F52-B742-897796C1F13B}.Debug|x64.ActiveCfg = Debug|Win32
 		{BBF27339-C7B6-4F52-B742-897796C1F13B}.Ncat Static|Win32.ActiveCfg = Release|Win32
 		{BBF27339-C7B6-4F52-B742-897796C1F13B}.Ncat Static|Win32.Build.0 = Release|Win32
@@ -206,20 +205,20 @@ Global
 		{BBF27339-C7B6-4F52-B742-897796C1F13B}.ReleaseWithoutAsm|Win32.ActiveCfg = Release|Win32
 		{BBF27339-C7B6-4F52-B742-897796C1F13B}.ReleaseWithoutAsm|Win32.Build.0 = Release|Win32
 		{BBF27339-C7B6-4F52-B742-897796C1F13B}.ReleaseWithoutAsm|x64.ActiveCfg = Release|Win32
-		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|Win32.ActiveCfg = Debug|Win32
-		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|Win32.Build.0 = Debug|Win32
+		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|Win32.ActiveCfg = DebugWithoutAsm|Win32
+		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|Win32.Build.0 = DebugWithoutAsm|Win32
 		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|x64.ActiveCfg = Debug|x64
 		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|x64.Build.0 = Debug|x64
 		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Ncat Static|Win32.ActiveCfg = Release|Win32
 		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Ncat Static|Win32.Build.0 = Release|Win32
 		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Ncat Static|x64.ActiveCfg = Release|x64
 		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Ncat Static|x64.Build.0 = Release|x64
-		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|Win32.ActiveCfg = Release|Win32
-		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|Win32.Build.0 = Release|Win32
+		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|Win32.ActiveCfg = ReleaseWithoutAsm|Win32
+		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|Win32.Build.0 = ReleaseWithoutAsm|Win32
 		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|x64.ActiveCfg = Release|x64
 		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|x64.Build.0 = Release|x64
-		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseOEM|Win32.ActiveCfg = Release|Win32
-		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseOEM|Win32.Build.0 = Release|Win32
+		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseOEM|Win32.ActiveCfg = ReleaseWithoutAsm|Win32
+		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseOEM|Win32.Build.0 = ReleaseWithoutAsm|Win32
 		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseOEM|x64.ActiveCfg = ReleaseWithoutAsm|x64
 		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseOEM|x64.Build.0 = ReleaseWithoutAsm|x64
 		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|Win32.ActiveCfg = ReleaseWithoutAsm|Win32
@@ -242,7 +241,6 @@ Global
 		{ED957342-E43B-496E-92D9-4C76B525BDF5}.ReleaseWithoutAsm|Win32.Build.0 = Release|Win32
 		{ED957342-E43B-496E-92D9-4C76B525BDF5}.ReleaseWithoutAsm|x64.ActiveCfg = Release|Win32
 		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|Win32.ActiveCfg = Debug|Win32
-		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|Win32.Build.0 = Debug|Win32
 		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|x64.ActiveCfg = Debug|x64
 		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|x64.Build.0 = Debug|x64
 		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Ncat Static|Win32.ActiveCfg = Release|Win32