diff --git a/gflags-vs2010.sln b/gflags-vs2010.sln
index 5c34be4..f195d66 100644
--- a/gflags-vs2010.sln
+++ b/gflags-vs2010.sln
@@ -1,23 +1,33 @@
 Microsoft Visual Studio Solution File, Format Version 11.00
 # Visual Studio 2010
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libgflags", "vsprojects\libgflags\libgflags-vs2010.vcxproj", "{FB27FBDB-E6C0-4D00-A7F8-1EEEF1B48ABC}"
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libgflags-vs2010", "vsprojects\libgflags\libgflags-vs2010.vcxproj", "{FB27FBDB-E6C0-4D00-A7F8-1EEEF1B48ABC}"
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gflags_unittest", "vsprojects\gflags_unittest\gflags_unittest-vs2010.vcxproj", "{4B263748-5F0F-468C-8C5C-ED2682BB6BE3}"
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gflags_unittest-vs2010", "vsprojects\gflags_unittest\gflags_unittest-vs2010.vcxproj", "{4B263748-5F0F-468C-8C5C-ED2682BB6BE3}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
+		Debug|x64 = Debug|x64
 		Release|Win32 = Release|Win32
+		Release|x64 = Release|x64
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{FB27FBDB-E6C0-4D00-A7F8-1EEEF1B48ABC}.Debug|Win32.ActiveCfg = Debug|Win32
 		{FB27FBDB-E6C0-4D00-A7F8-1EEEF1B48ABC}.Debug|Win32.Build.0 = Debug|Win32
+		{FB27FBDB-E6C0-4D00-A7F8-1EEEF1B48ABC}.Debug|x64.ActiveCfg = Debug|x64
+		{FB27FBDB-E6C0-4D00-A7F8-1EEEF1B48ABC}.Debug|x64.Build.0 = Debug|x64
 		{FB27FBDB-E6C0-4D00-A7F8-1EEEF1B48ABC}.Release|Win32.ActiveCfg = Release|Win32
 		{FB27FBDB-E6C0-4D00-A7F8-1EEEF1B48ABC}.Release|Win32.Build.0 = Release|Win32
+		{FB27FBDB-E6C0-4D00-A7F8-1EEEF1B48ABC}.Release|x64.ActiveCfg = Release|x64
+		{FB27FBDB-E6C0-4D00-A7F8-1EEEF1B48ABC}.Release|x64.Build.0 = Release|x64
 		{4B263748-5F0F-468C-8C5C-ED2682BB6BE3}.Debug|Win32.ActiveCfg = Debug|Win32
 		{4B263748-5F0F-468C-8C5C-ED2682BB6BE3}.Debug|Win32.Build.0 = Debug|Win32
+		{4B263748-5F0F-468C-8C5C-ED2682BB6BE3}.Debug|x64.ActiveCfg = Debug|x64
+		{4B263748-5F0F-468C-8C5C-ED2682BB6BE3}.Debug|x64.Build.0 = Debug|x64
 		{4B263748-5F0F-468C-8C5C-ED2682BB6BE3}.Release|Win32.ActiveCfg = Release|Win32
 		{4B263748-5F0F-468C-8C5C-ED2682BB6BE3}.Release|Win32.Build.0 = Release|Win32
+		{4B263748-5F0F-468C-8C5C-ED2682BB6BE3}.Release|x64.ActiveCfg = Release|x64
+		{4B263748-5F0F-468C-8C5C-ED2682BB6BE3}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
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diff --git a/vsprojects/gflags_unittest/gflags_unittest-vs2010.vcxproj b/vsprojects/gflags_unittest/gflags_unittest-vs2010.vcxproj
index 77bd3f5..6624350 100644
--- a/vsprojects/gflags_unittest/gflags_unittest-vs2010.vcxproj
+++ b/vsprojects/gflags_unittest/gflags_unittest-vs2010.vcxproj
@@ -5,10 +5,18 @@
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       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
     <ProjectConfiguration Include="Release|Win32">
       <Configuration>Release</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <ProjectGuid>{4B263748-5F0F-468C-8C5C-ED2682BB6BE3}</ProjectGuid>
@@ -19,34 +27,60 @@
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     <CharacterSet>MultiByte</CharacterSet>
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     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>MultiByte</CharacterSet>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>MultiByte</CharacterSet>
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+  <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" />
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     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+  <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" />
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     <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
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+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(SolutionDir)$(Configuration)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(Configuration)\</IntDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(Configuration)\</IntDir>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</LinkIncremental>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</LinkIncremental>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(SolutionDir)$(Configuration)\</OutDir>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(SolutionDir)$(Configuration)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(Configuration)\</IntDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(Configuration)\</IntDir>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</LinkIncremental>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</LinkIncremental>
     <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">AllRules.ruleset</CodeAnalysisRuleSet>
+    <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">AllRules.ruleset</CodeAnalysisRuleSet>
     <CodeAnalysisRules Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" />
+    <CodeAnalysisRules Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" />
     <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" />
+    <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" />
     <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">AllRules.ruleset</CodeAnalysisRuleSet>
+    <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='Release|x64'">AllRules.ruleset</CodeAnalysisRuleSet>
     <CodeAnalysisRules Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" />
+    <CodeAnalysisRules Condition="'$(Configuration)|$(Platform)'=='Release|x64'" />
     <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" />
+    <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='Release|x64'" />
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   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
@@ -68,6 +102,24 @@
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     </Link>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)gflags_unittest.exe</OutputFile>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <ProgramDatabaseFile>$(OutDir)gflags_unittest.pdb</ProgramDatabaseFile>
+      <SubSystem>Console</SubSystem>
+    </Link>
+  </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
       <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -86,12 +138,33 @@
       <TargetMachine>MachineX86</TargetMachine>
     </Link>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)gflags_unittest.exe</OutputFile>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <SubSystem>Console</SubSystem>
+      <OptimizeReferences>true</OptimizeReferences>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+    </Link>
+  </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\gflags_unittest.cc">
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\src\windows; ..\..\src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\src\windows; ..\..\src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <RuntimeLibrary Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">MultiThreadedDebugDLL</RuntimeLibrary>
+      <RuntimeLibrary Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">MultiThreadedDebugDLL</RuntimeLibrary>
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\src\windows; ..\..\src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\src\windows; ..\..\src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <RuntimeLibrary Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">MultiThreadedDLL</RuntimeLibrary>
+      <RuntimeLibrary Condition="'$(Configuration)|$(Platform)'=='Release|x64'">MultiThreadedDLL</RuntimeLibrary>
     </ClCompile>
   </ItemGroup>
   <ItemGroup>
diff --git a/vsprojects/libgflags/libgflags-vs2010.vcxproj b/vsprojects/libgflags/libgflags-vs2010.vcxproj
index 7b9d36c..2e9f397 100644
--- a/vsprojects/libgflags/libgflags-vs2010.vcxproj
+++ b/vsprojects/libgflags/libgflags-vs2010.vcxproj
@@ -5,10 +5,18 @@
       <Configuration>Debug</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
     <ProjectConfiguration Include="Release|Win32">
       <Configuration>Release</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <ProjectGuid>{FB27FBDB-E6C0-4D00-A7F8-1EEEF1B48ABC}</ProjectGuid>
@@ -20,34 +28,60 @@
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     <CharacterSet>MultiByte</CharacterSet>
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   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <CharacterSet>MultiByte</CharacterSet>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <CharacterSet>MultiByte</CharacterSet>
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   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
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     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+  <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" />
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     <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
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+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(SolutionDir)$(Configuration)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(Configuration)\</IntDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(Configuration)\</IntDir>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</LinkIncremental>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</LinkIncremental>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(SolutionDir)$(Configuration)\</OutDir>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(SolutionDir)$(Configuration)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(Configuration)\</IntDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(Configuration)\</IntDir>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</LinkIncremental>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</LinkIncremental>
     <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">AllRules.ruleset</CodeAnalysisRuleSet>
+    <CodeAnalysisRuleSet Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">AllRules.ruleset</CodeAnalysisRuleSet>
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+    <CodeAnalysisRuleAssemblies Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" />
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@@ -70,6 +104,25 @@
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@@ -89,30 +142,64 @@
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