diff --git a/programs/.gitignore b/programs/.gitignore
index 0241896..4d78930 100644
--- a/programs/.gitignore
+++ b/programs/.gitignore
@@ -49,6 +49,7 @@
 test/ssl_cert_test
 test/udp_proxy
 test/zeroize
+test/query_compile_time_config
 util/pem2der
 util/strerror
 x509/cert_app
diff --git a/programs/Makefile b/programs/Makefile
index 1d4a801..7d9affc 100644
--- a/programs/Makefile
+++ b/programs/Makefile
@@ -70,6 +70,7 @@
 	test/ssl_cert_test$(EXEXT)	test/benchmark$(EXEXT)		\
 	test/selftest$(EXEXT)		test/udp_proxy$(EXEXT)		\
 	test/zeroize$(EXEXT)						\
+	test/query_compile_time_config$(EXEXT)				\
 	util/pem2der$(EXEXT)		util/strerror$(EXEXT)		\
 	x509/cert_app$(EXEXT)		x509/crl_app$(EXEXT)		\
 	x509/cert_req$(EXEXT)		x509/cert_write$(EXEXT)		\
@@ -264,6 +265,10 @@
 	echo "  CC    test/zeroize.c"
 	$(CC) $(LOCAL_CFLAGS) $(CFLAGS) test/zeroize.c    $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
 
+test/query_compile_time_config$(EXEXT): test/query_compile_time_config.c ssl/query_config.c $(DEP)
+	echo "  CC    test/query_compile_time_config.c"
+	$(CC) $(LOCAL_CFLAGS) $(CFLAGS) test/query_compile_time_config.c ssl/query_config.c $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
+
 util/pem2der$(EXEXT): util/pem2der.c $(DEP)
 	echo "  CC    util/pem2der.c"
 	$(CC) $(LOCAL_CFLAGS) $(CFLAGS) util/pem2der.c    $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
diff --git a/programs/test/CMakeLists.txt b/programs/test/CMakeLists.txt
index 9ca0cb2..8af02da 100644
--- a/programs/test/CMakeLists.txt
+++ b/programs/test/CMakeLists.txt
@@ -30,6 +30,9 @@
 add_executable(zeroize zeroize.c)
 target_link_libraries(zeroize ${libs})
 
-install(TARGETS selftest benchmark ssl_cert_test udp_proxy
+add_executable(query_compile_time_config query_compile_time_config.c ../ssl/query_config.c)
+target_link_libraries(query_compile_time_config ${libs})
+
+install(TARGETS selftest benchmark ssl_cert_test udp_proxy query_compile_time_config
         DESTINATION "bin"
         PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
diff --git a/programs/test/query_compile_time_config.c b/programs/test/query_compile_time_config.c
new file mode 100644
index 0000000..f02c52d
--- /dev/null
+++ b/programs/test/query_compile_time_config.c
@@ -0,0 +1,56 @@
+/*
+ *  Query the Mbed TLS compile time configuration
+ *
+ *  Copyright (C) 2018, Arm Limited, All Rights Reserved
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  This file is part of Mbed TLS (https://tls.mbed.org)
+ */
+
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "mbedtls/config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdio.h>
+#include <stdlib.h>
+#define mbedtls_printf       printf
+#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
+#endif
+
+#define USAGE                                                                \
+    "usage: %s <MBEDTLS_CONFIG>\n\n"                                           \
+    "This program takes one command line argument which corresponds to\n"    \
+    "the string representation of a Mbed TLS compile time configuration.\n"  \
+    "The value 0 will be returned if this configuration is defined in the\n" \
+    "Mbed TLS build and the macro expansion of that configuration will be\n" \
+    "printed (if any). Otherwise, 1 will be returned.\n"
+
+int query_config( const char *config );
+
+int main( int argc, char *argv[] )
+{
+    if ( argc != 2 )
+    {
+        mbedtls_printf( USAGE, argv[0] );
+        return( MBEDTLS_EXIT_FAILURE );
+    }
+
+    return( query_config( argv[1] ) );
+}
diff --git a/visualc/VS2010/mbedTLS.sln b/visualc/VS2010/mbedTLS.sln
index 66b96c3..85429b8 100644
--- a/visualc/VS2010/mbedTLS.sln
+++ b/visualc/VS2010/mbedTLS.sln
@@ -208,6 +208,11 @@
 		{46CF2D25-6A36-4189-B59C-E4815388E554} = {46CF2D25-6A36-4189-B59C-E4815388E554}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "query_compile_time_config", "query_compile_time_config.vcxproj", "{D6F58AF2-9D80-562A-E2B0-F743281522B9}"
+	ProjectSection(ProjectDependencies) = postProject
+		{46CF2D25-6A36-4189-B59C-E4815388E554} = {46CF2D25-6A36-4189-B59C-E4815388E554}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "pem2der", "pem2der.vcxproj", "{D3C6FBD6-D78E-7180-8345-5E09B492DBEC}"
 	ProjectSection(ProjectDependencies) = postProject
 		{46CF2D25-6A36-4189-B59C-E4815388E554} = {46CF2D25-6A36-4189-B59C-E4815388E554}
@@ -587,6 +592,14 @@
 		{10C01E94-4926-063E-9F56-C84ED190D349}.Release|Win32.Build.0 = Release|Win32
 		{10C01E94-4926-063E-9F56-C84ED190D349}.Release|x64.ActiveCfg = Release|x64
 		{10C01E94-4926-063E-9F56-C84ED190D349}.Release|x64.Build.0 = Release|x64
+		{D6F58AF2-9D80-562A-E2B0-F743281522B9}.Debug|Win32.ActiveCfg = Debug|Win32
+		{D6F58AF2-9D80-562A-E2B0-F743281522B9}.Debug|Win32.Build.0 = Debug|Win32
+		{D6F58AF2-9D80-562A-E2B0-F743281522B9}.Debug|x64.ActiveCfg = Debug|x64
+		{D6F58AF2-9D80-562A-E2B0-F743281522B9}.Debug|x64.Build.0 = Debug|x64
+		{D6F58AF2-9D80-562A-E2B0-F743281522B9}.Release|Win32.ActiveCfg = Release|Win32
+		{D6F58AF2-9D80-562A-E2B0-F743281522B9}.Release|Win32.Build.0 = Release|Win32
+		{D6F58AF2-9D80-562A-E2B0-F743281522B9}.Release|x64.ActiveCfg = Release|x64
+		{D6F58AF2-9D80-562A-E2B0-F743281522B9}.Release|x64.Build.0 = Release|x64
 		{D3C6FBD6-D78E-7180-8345-5E09B492DBEC}.Debug|Win32.ActiveCfg = Debug|Win32
 		{D3C6FBD6-D78E-7180-8345-5E09B492DBEC}.Debug|Win32.Build.0 = Debug|Win32
 		{D3C6FBD6-D78E-7180-8345-5E09B492DBEC}.Debug|x64.ActiveCfg = Debug|x64
diff --git a/visualc/VS2010/query_compile_time_config.vcxproj b/visualc/VS2010/query_compile_time_config.vcxproj
new file mode 100644
index 0000000..f8ec62a
--- /dev/null
+++ b/visualc/VS2010/query_compile_time_config.vcxproj
@@ -0,0 +1,174 @@
+﻿<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <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>
+  <ItemGroup>
+    <ClCompile Include="..\..\programs\test\query_compile_time_config.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="mbedTLS.vcxproj">
+      <Project>{46cf2d25-6a36-4189-b59c-e4815388e554}</Project>
+      <LinkLibraryDependencies>true</LinkLibraryDependencies>
+    </ProjectReference>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{D6F58AF2-9D80-562A-E2B0-F743281522B9}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>query_compile_time_config</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>Windows7.1SDK</PlatformToolset>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(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.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+    <IntDir>$(Configuration)\$(TargetName)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+    <IntDir>$(Configuration)\$(TargetName)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+    <IntDir>$(Configuration)\$(TargetName)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+    <IntDir>$(Configuration)\$(TargetName)\</IntDir>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <ShowProgress>NotSet</ShowProgress>
+      <AdditionalDependencies>kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>Debug</AdditionalLibraryDirectories>
+    </Link>
+    <ProjectReference>
+      <LinkLibraryDependencies>false</LinkLibraryDependencies>
+    </ProjectReference>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <ShowProgress>NotSet</ShowProgress>
+      <AdditionalDependencies>kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>Debug</AdditionalLibraryDirectories>
+    </Link>
+    <ProjectReference>
+      <LinkLibraryDependencies>false</LinkLibraryDependencies>
+    </ProjectReference>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalLibraryDirectories>Release</AdditionalLibraryDirectories>
+      <AdditionalDependencies>kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN64;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalLibraryDirectories>Release</AdditionalLibraryDirectories>
+      <AdditionalDependencies>%(AdditionalDependencies);</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>