diff --git a/src/libs/clangsupport/codecompletionchunk.h b/src/libs/clangsupport/codecompletionchunk.h
index 315bf602491..b1a0ba32e71 100644
--- a/src/libs/clangsupport/codecompletionchunk.h
+++ b/src/libs/clangsupport/codecompletionchunk.h
@@ -112,6 +112,6 @@ public:
 
 CLANGSUPPORT_EXPORT QDebug operator<<(QDebug debug, const CodeCompletionChunk &chunk);
 
-std::ostream &operator<<(std::ostream &os, const CodeCompletionChunk::Kind &kind);
+CLANGSUPPORT_EXPORT std::ostream &operator<<(std::ostream &os, const CodeCompletionChunk::Kind &kind);
 
 } // namespace ClangBackEnd
diff --git a/src/libs/clangsupport/processexception.h b/src/libs/clangsupport/processexception.h
index 7dbcad17bb5..3ad10ba4fc4 100644
--- a/src/libs/clangsupport/processexception.h
+++ b/src/libs/clangsupport/processexception.h
@@ -29,9 +29,11 @@
 
 #include <exception>
 
+#include "clangsupport_global.h"
+
 namespace ClangBackEnd {
 
-class ProcessException : public std::exception
+class CLANGSUPPORT_EXPORT ProcessException : public std::exception
 {
 public:
     ProcessException() = default;
diff --git a/src/libs/clangsupport/readmessageblock.h b/src/libs/clangsupport/readmessageblock.h
index 391d89b751d..b83040d4720 100644
--- a/src/libs/clangsupport/readmessageblock.h
+++ b/src/libs/clangsupport/readmessageblock.h
@@ -29,6 +29,8 @@
 
 #include <vector>
 
+#include "clangsupport_global.h"
+
 QT_BEGIN_NAMESPACE
 class QDataStream;
 class QIODevice;
@@ -38,7 +40,7 @@ namespace ClangBackEnd {
 
 class MessageEnvelop;
 
-class ReadMessageBlock
+class CLANGSUPPORT_EXPORT ReadMessageBlock
 {
 public:
     ReadMessageBlock(QIODevice *ioDevice = nullptr);
diff --git a/src/libs/clangsupport/tooltipinfo.h b/src/libs/clangsupport/tooltipinfo.h
index f50c93a53e2..31bf313ab14 100644
--- a/src/libs/clangsupport/tooltipinfo.h
+++ b/src/libs/clangsupport/tooltipinfo.h
@@ -30,6 +30,8 @@
 
 #include <QVariant>
 
+#include "clangsupport_global.h"
+
 namespace ClangBackEnd {
 
 class ToolTipInfo
@@ -106,6 +108,6 @@ public:
 QDebug operator<<(QDebug debug, const ToolTipInfo &message);
 std::ostream &operator<<(std::ostream &os, const ToolTipInfo &message);
 
-const char *qdocCategoryToString(ToolTipInfo::QdocCategory category);
+CLANGSUPPORT_EXPORT const char *qdocCategoryToString(ToolTipInfo::QdocCategory category);
 
 } // namespace ClangBackEnd
diff --git a/src/libs/clangsupport/writemessageblock.h b/src/libs/clangsupport/writemessageblock.h
index 8a126fed36e..e8baa978d05 100644
--- a/src/libs/clangsupport/writemessageblock.h
+++ b/src/libs/clangsupport/writemessageblock.h
@@ -28,6 +28,8 @@
 #include <QByteArray>
 #include <QtGlobal>
 
+#include "clangsupport_global.h"
+
 QT_BEGIN_NAMESPACE
 class QVariant;
 class QDataStream;
@@ -39,7 +41,7 @@ namespace ClangBackEnd {
 
 class MessageEnvelop;
 
-class WriteMessageBlock
+class CLANGSUPPORT_EXPORT WriteMessageBlock
 {
 public:
     WriteMessageBlock(QIODevice *ioDevice = nullptr);
diff --git a/tests/unit/CMakeLists.txt b/tests/unit/CMakeLists.txt
index eb072a2d922..9fee1f4a145 100644
--- a/tests/unit/CMakeLists.txt
+++ b/tests/unit/CMakeLists.txt
@@ -1,2 +1,40 @@
+cmake_minimum_required(VERSION 3.10)
+
+if (NOT QT_CREATOR_API_DEFINED)
+  list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../../cmake")
+
+  project(unit)
+
+  enable_testing()
+
+  # Needed for pch
+  set(QtCreator_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../")
+  option(BUILD_WITH_PCH "Build with precompiled headers" ON)
+
+  set(CMAKE_AUTOMOC ON)
+  set(CMAKE_AUTORCC ON)
+  set(CMAKE_AUTOUIC ON)
+
+  set(CMAKE_CXX_STANDARD 17)
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
+  set(CMAKE_CXX_EXTENSIONS OFF)
+
+  set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+  set(BUILD_EXECUTABLES echo)
+
+  set(IMPLICIT_DEPENDS Qt5::Test)
+
+  include(QtCreatorIDEBranding)
+  include(QtCreatorAPI)
+
+  set(WITH_TESTS ON)
+  set(GOOGLETEST_DIR ${CMAKE_CURRENT_LIST_DIR}/unittest/3rdparty/googletest)
+
+  find_package(Clang MODULE)
+  find_package(Qt5 COMPONENTS Core Widgets Network Qml Concurrent Test Xml MODULE)
+  find_package(Threads)
+endif()
+
 add_subdirectory(echoserver)
 add_subdirectory(unittest)
diff --git a/tests/unit/unittest/CMakeLists.txt b/tests/unit/unittest/CMakeLists.txt
index 4bc5c1fc04f..94319955138 100644
--- a/tests/unit/unittest/CMakeLists.txt
+++ b/tests/unit/unittest/CMakeLists.txt
@@ -14,7 +14,9 @@ if (NOT Googletest_FOUND)
 endif()
 
 if (MSVC)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /bigobj")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /bigobj")
+elseif (MINGW)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wa,-mbig-obj")
 endif()
 
 add_qtc_test(unittest GTEST
@@ -31,7 +33,7 @@ add_qtc_test(unittest GTEST
     QT_RESTRICTED_CAST_FROM_ASCII
     UNIT_TESTS
     DONT_CHECK_MESSAGE_COUNTER
-    QTC_RESOURCE_DIR="${PROJECT_SOURCE_DIR}/share/qtcreator"
+    QTC_RESOURCE_DIR="${CMAKE_CURRENT_LIST_DIR}/../../../share/qtcreator"
     TESTDATA_DIR="${CMAKE_CURRENT_BINARY_DIR}/data"
     ECHOSERVER="$<TARGET_FILE_DIR:echo>/echo"
     CPPTOOLS_JSON="${CMAKE_CURRENT_BINARY_DIR}/CppTools.json"
@@ -139,23 +141,22 @@ function(extend_qtc_test_with_target_sources target)
   )
 endfunction()
 
-foreach(clang_tools_library clangbackend_lib)
-  extend_qtc_test_with_target_sources(${clang_tools_library}
-    DEFINES
-      CLANGSUPPORT_BUILD_LIB
-    INCLUDES
-      $<TARGET_PROPERTY:ClangSupport,INTERFACE_INCLUDE_DIRECTORIES>
-   )
-endforeach()
+if (NOT TARGET clangbackend_lib)
+  add_subdirectory(../../../src/tools/clangbackend/source ${CMAKE_CURRENT_BINARY_DIR}/clangbackend)
+endif()
+extend_qtc_test(unittest DEPENDS clangbackend_lib)
 
-extend_qtc_test_with_target_sources(Sqlite)
-
-extend_qtc_test(unittest DEFINES _HAVE_SQLITE_CONFIG_H)
+if (NOT TARGET Sqlite)
+  add_subdirectory(../../../src/libs/sqlite ${CMAKE_CURRENT_BINARY_DIR}/sqlite)
+endif()
+extend_qtc_test_with_target_sources(Sqlite
+  DEFINES _HAVE_SQLITE_CONFIG_H
+)
 
 if (APPLE)
-extend_qtc_test(unittest DEFINES _BSD_SOURCE)
+  extend_qtc_test(unittest DEFINES _BSD_SOURCE)
 elseif (UNIX)
-extend_qtc_test(unittest DEFINES _POSIX_C_SOURCE=200809L _GNU_SOURCE _DEFAULT_SOURCE)
+  extend_qtc_test(unittest DEFINES _POSIX_C_SOURCE=200809L _GNU_SOURCE _DEFAULT_SOURCE)
 endif()
 
 # Do not work on the source directory data
@@ -166,7 +167,7 @@ add_custom_command(TARGET unittest POST_BUILD
 )
 
 # create fake CppTools.json for the mime type definitions
-file(READ "${PROJECT_SOURCE_DIR}/src/plugins/cpptools/CppTools.json.in" plugin_json_in)
+file(READ "../../../src/plugins/cpptools/CppTools.json.in" plugin_json_in)
 string(REPLACE "\\\"" "\"" plugin_json_in ${plugin_json_in})
 string(REPLACE "\\'" "'" plugin_json_in ${plugin_json_in})
 string(REPLACE "$$QTCREATOR_VERSION" "${IDE_VERSION}" plugin_json_in ${plugin_json_in})
@@ -253,6 +254,7 @@ finalize_qtc_gtest(unittest ".c$")
 # Path needs to be before CppTools
 target_include_directories(unittest
   PRIVATE
+    BEFORE ../../../src/tools/clangbackend/source
     BEFORE ../../../src/plugins
 )
 
@@ -329,17 +331,21 @@ extend_qtc_test(unittest
     "${QmlDesignerDir}/designercore/include/model.h"
 )
 
-extend_qtc_test_with_target_sources(Utils DEFINES QTCREATOR_UTILS_STATIC_LIB "QTC_REL_TOOLS_PATH=\"${RELATIVE_LIBEXEC_PATH}\"")
-extend_qtc_test(unittest
-  CONDITION APPLE
-  DEPENDS ${FWFoundation} ${FWAppKit}
-)
-extend_qtc_test_with_target_sources(CPlusPlus DEFINES CPLUSPLUS_BUILD_STATIC_LIB)
-extend_qtc_test_with_target_sources(3rd_cplusplus DEFINES CPLUSPLUS_BUILD_LIB)
-extend_qtc_test_with_target_sources(ClangSupport DEFINES CLANGSUPPORT_BUILD_LIB)
+if (NOT TARGET Utils)
+  add_subdirectory(../../../src/libs/utils ${CMAKE_CURRENT_BINARY_DIR}/utils)
+endif()
+if (NOT TARGET CPlusPlus)
+  add_subdirectory(../../../src/libs/3rdparty/cplusplus ${CMAKE_CURRENT_BINARY_DIR}/3rd_cplusplus)
+  add_subdirectory(../../../src/libs/cplusplus ${CMAKE_CURRENT_BINARY_DIR}/cplusplus)
+endif()
+if (NOT TARGET ClangSupport)
+  add_subdirectory(../../../src/libs/clangsupport ${CMAKE_CURRENT_BINARY_DIR}/clangsupport)
+endif()
+
+extend_qtc_test(unittest DEPENDS Utils CPlusPlus ClangSupport)
 
 extend_qtc_test(unittest
-  SOURCES_PREFIX_FROM_TARGET ClangCodeModel
+  SOURCES_PREFIX ../../../src/plugins/clangcodemodel
   SOURCES
     clangactivationsequencecontextprocessor.cpp clangactivationsequencecontextprocessor.h
     clangactivationsequenceprocessor.cpp clangactivationsequenceprocessor.h
@@ -365,7 +371,7 @@ extend_qtc_test(unittest
 )
 
 extend_qtc_test(unittest
-  SOURCES_PREFIX_FROM_TARGET Core
+  SOURCES_PREFIX ../../../src/plugins/coreplugin
   DEFINES CORE_STATIC_LIBRARY
   SOURCES
     coreicons.cpp coreicons.h
@@ -374,7 +380,7 @@ extend_qtc_test(unittest
 )
 
 extend_qtc_test(unittest
-  SOURCES_PREFIX_FROM_TARGET CppTools
+  SOURCES_PREFIX ../../../src/plugins/cpptools
   DEFINES CPPTOOLS_STATIC_LIBRARY
   SOURCES
     cppprojectfile.cpp cppprojectfile.h
@@ -389,15 +395,16 @@ extend_qtc_test(unittest
 )
 
 extend_qtc_test(unittest
-  SOURCES_PREFIX_FROM_TARGET ProjectExplorer
+  SOURCES_PREFIX ../../../src/plugins/projectexplorer
   DEFINES PROJECTEXPLORER_STATIC_LIBRARY
   SOURCES
     projectmacro.cpp projectmacro.h
 )
 
 extend_qtc_test(unittest
-  SOURCES_PREFIX_FROM_TARGET ClangFormat
-  DEFINES CLANGPCHMANAGER_STATIC_LIB
+  SOURCES_PREFIX ../../../src/plugins/clangformat
+  CONDITION TARGET libclang
+  DEPENDS ${CLANG_TOOLING_LIBS}
   SOURCES
     clangformatconstants.h
     clangformatbaseindenter.cpp clangformatbaseindenter.h