diff --git a/.gitignore b/.gitignore
index a9a3cae8e9455..88165cf3073fd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -348,3 +348,6 @@ linker
 # ln -s $(pwd)/src/libraries/Common/src src/coreclr/src/System.Private.CoreLib/common
 src/coreclr/src/System.Private.CoreLib/shared
 src/coreclr/src/System.Private.CoreLib/common
+
+# The debug directory should not be ignored
+!src/coreclr/src/debug
diff --git a/src/coreclr/crosscomponents.cmake b/src/coreclr/crosscomponents.cmake
index 30d53d585dff5..f8ea417471ca6 100644
--- a/src/coreclr/crosscomponents.cmake
+++ b/src/coreclr/crosscomponents.cmake
@@ -14,10 +14,6 @@ endif()
 if(NOT CLR_CMAKE_HOST_LINUX AND NOT FEATURE_CROSSBITNESS)
     list (APPEND CLR_CROSS_COMPONENTS_LIST
         mscordaccore
+        mscordbi
     )
-    if (CLR_CMAKE_HOST_OS STREQUAL CLR_CMAKE_TARGET_OS)
-        list (APPEND CLR_CROSS_COMPONENTS_LIST
-            mscordbi
-        )
-    endif (CLR_CMAKE_HOST_OS STREQUAL CLR_CMAKE_TARGET_OS)
 endif()
diff --git a/src/coreclr/src/debug/debug-pal/CMakeLists.txt b/src/coreclr/src/debug/debug-pal/CMakeLists.txt
index b06e46092caba..ac1e48fb5fb4d 100644
--- a/src/coreclr/src/debug/debug-pal/CMakeLists.txt
+++ b/src/coreclr/src/debug/debug-pal/CMakeLists.txt
@@ -8,11 +8,17 @@ if(CLR_CMAKE_HOST_WIN32)
     add_definitions(-DWIN32_LEAN_AND_MEAN)
     include_directories(../../inc) #needed for warning control
 
-    set(TWO_WAY_PIPE_SOURCES
-        win/diagnosticsipc.cpp
-        win/twowaypipe.cpp
-        win/processdescriptor.cpp
-    )
+    if(CLR_CMAKE_TARGET_WIN32)
+        set(TWO_WAY_PIPE_SOURCES
+            win/diagnosticsipc.cpp
+            win/twowaypipe.cpp
+            win/processdescriptor.cpp
+        )
+    else(CLR_CMAKE_TARGET_WIN32)
+        set(TWO_WAY_PIPE_SOURCES
+            dummy/twowaypipe.cpp
+        )
+    endif(CLR_CMAKE_TARGET_WIN32)
 endif(CLR_CMAKE_HOST_WIN32)
 
 if(CLR_CMAKE_HOST_UNIX)
diff --git a/src/coreclr/src/debug/debug-pal/dummy/twowaypipe.cpp b/src/coreclr/src/debug/debug-pal/dummy/twowaypipe.cpp
new file mode 100644
index 0000000000000..ed73fd75cf173
--- /dev/null
+++ b/src/coreclr/src/debug/debug-pal/dummy/twowaypipe.cpp
@@ -0,0 +1,76 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+#include <windows.h>
+#include "twowaypipe.h"
+
+// This file contains a dummy implementation of the simple IPC mechanism - bidirectional named pipe.
+// It is used for the cross OS DBI where IPC is not supported.
+
+
+// Creates a server side of the pipe.
+// Id is used to create pipes names and uniquely identify the pipe on the machine.
+// true - success, false - failure (use GetLastError() for more details)
+bool TwoWayPipe::CreateServer(const ProcessDescriptor& pd)
+{
+    return false;
+}
+
+
+// Connects to a previously opened server side of the pipe.
+// Id is used to locate the pipe on the machine.
+// true - success, false - failure (use GetLastError() for more details)
+bool TwoWayPipe::Connect(const ProcessDescriptor& pd)
+{
+    return false;
+}
+
+// Waits for incoming client connections, assumes GetState() == Created
+// true - success, false - failure (use GetLastError() for more details)
+bool TwoWayPipe::WaitForConnection()
+{
+    return false;
+}
+
+// Reads data from pipe. Returns number of bytes read or a negative number in case of an error.
+// use GetLastError() for more details
+int TwoWayPipe::Read(void *buffer, DWORD bufferSize)
+{
+    return -1;
+}
+
+// Writes data to pipe. Returns number of bytes written or a negative number in case of an error.
+// use GetLastError() for more details
+int TwoWayPipe::Write(const void *data, DWORD dataSize)
+{
+    return -1;
+}
+
+// Disconnect server or client side of the pipe.
+// true - success, false - failure (use GetLastError() for more details)
+bool TwoWayPipe::Disconnect()
+{
+    return false;
+}
+
+// Connects to a one sided pipe previously created by CreateOneWayPipe.
+// In order to successfully connect id and inbound flag should be the same.
+HANDLE TwoWayPipe::OpenOneWayPipe(DWORD id, bool inbound)
+{
+    return NULL;
+}
+
+
+// Creates a one way pipe, id and inboud flag are used for naming.
+// Created pipe is supposed to be connected to by OpenOneWayPipe.
+HANDLE TwoWayPipe::CreateOneWayPipe(DWORD id, bool inbound)
+{
+    return NULL;
+}
+
+// Used by debugger side (RS) to cleanup the target (LS) named pipes
+// and semaphores when the debugger detects the debuggee process  exited.
+void TwoWayPipe::CleanupTargetProcess()
+{
+}
diff --git a/src/coreclr/src/debug/di/cordb.cpp b/src/coreclr/src/debug/di/cordb.cpp
index df6679040d196..280cda4ef5a8f 100644
--- a/src/coreclr/src/debug/di/cordb.cpp
+++ b/src/coreclr/src/debug/di/cordb.cpp
@@ -28,7 +28,7 @@
 #endif
 
 //********** Globals. *********************************************************
-#ifndef TARGET_UNIX
+#ifndef HOST_UNIX
 HINSTANCE       g_hInst;                // Instance handle to this piece of code.
 #endif
 
diff --git a/src/coreclr/src/dlls/mscordbi/CMakeLists.txt b/src/coreclr/src/dlls/mscordbi/CMakeLists.txt
index 3f4568fa75d62..6d189272c75ae 100644
--- a/src/coreclr/src/dlls/mscordbi/CMakeLists.txt
+++ b/src/coreclr/src/dlls/mscordbi/CMakeLists.txt
@@ -19,7 +19,7 @@ if(CLR_CMAKE_HOST_LINUX)
     list(APPEND MSCORDBI_SOURCES ${PAL_REDEFINES_FILE})
 endif(CLR_CMAKE_HOST_LINUX)
 
-if(CLR_CMAKE_TARGET_WIN32)
+if(CLR_CMAKE_HOST_WIN32)
     add_definitions(-DFX_VER_INTERNALNAME_STR=mscordbi.dll)
 
     list(APPEND MSCORDBI_SOURCES
@@ -35,11 +35,11 @@ if(CLR_CMAKE_TARGET_WIN32)
     preprocess_file(${DEF_SOURCES} ${CMAKE_CURRENT_BINARY_DIR}/mscordbi.def)
 
     list(APPEND MSCORDBI_SOURCES ${CMAKE_CURRENT_BINARY_DIR}/mscordbi.def)
-else(CLR_CMAKE_TARGET_WIN32)
+else(CLR_CMAKE_HOST_WIN32)
     set(DEF_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/mscordbi_unixexports.src)
     set(EXPORTS_FILE ${CMAKE_CURRENT_BINARY_DIR}/mscordbi.exports)
     generate_exports_file(${DEF_SOURCES} ${EXPORTS_FILE})
-endif(CLR_CMAKE_TARGET_WIN32)
+endif(CLR_CMAKE_HOST_WIN32)
 
 if(CLR_CMAKE_HOST_LINUX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD)
     # This option is necessary to ensure that the overloaded new/delete operators defined inside
@@ -79,9 +79,13 @@ set(COREDBI_LIBRARIES
 )
 
 if(CLR_CMAKE_HOST_WIN32)
+    if(CLR_CMAKE_TARGET_WIN32)
+        set(COREDBI_TARGET_WIN32_LIBRARIES mdwinmd_dbi)
+    endif(CLR_CMAKE_TARGET_WIN32)
+
     list(APPEND COREDBI_LIBRARIES
         mdhotdata-staticcrt
-        mdwinmd_dbi
+        ${COREDBI_TARGET_WIN32_LIBRARIES}
         kernel32.lib
         advapi32.lib
         ole32.lib
diff --git a/src/coreclr/src/md/hotdata/CMakeLists.txt b/src/coreclr/src/md/hotdata/CMakeLists.txt
index fdcf90aabc2ac..c6168d2a4b0c2 100644
--- a/src/coreclr/src/md/hotdata/CMakeLists.txt
+++ b/src/coreclr/src/md/hotdata/CMakeLists.txt
@@ -40,7 +40,7 @@ add_library_clr(mdhotdata_crossgen ${MDHOTDATA_SOURCES})
 set_target_properties(mdhotdata_crossgen PROPERTIES CROSSGEN_COMPONENT TRUE)
 target_precompile_header(TARGET mdhotdata_crossgen HEADER external.h)
 
-if(CLR_CMAKE_TARGET_WIN32)
+if(CLR_CMAKE_HOST_WIN32)
   add_library_clr(mdhotdata-staticcrt ${MDHOTDATA_SOURCES})
   target_precompile_header(TARGET mdhotdata-staticcrt HEADER external.h)
-endif(CLR_CMAKE_TARGET_WIN32)
+endif(CLR_CMAKE_HOST_WIN32)