--- a/CMakeLists.txt	Tue Jun 21 13:52:22 2016 +0200
+++ b/CMakeLists.txt	Tue Jun 21 14:29:45 2016 +0200
@@ -296,6 +296,7 @@
 include(${CMAKE_SOURCE_DIR}/Resources/CMake/PugixmlConfiguration.cmake)
 include(${CMAKE_SOURCE_DIR}/Resources/CMake/SQLiteConfiguration.cmake)
 include(${CMAKE_SOURCE_DIR}/Resources/CMake/ZlibConfiguration.cmake)
+include(${CMAKE_SOURCE_DIR}/Resources/CMake/GoogleTestConfiguration.cmake)
 
 # These are the two most heavyweight dependencies. We put them as the
 # last includes to quickly spot problems when configuring static
@@ -392,26 +393,14 @@
 ## Configuration of the C/C++ macros
 #####################################################################
 
-# Setup precompiled headers for Microsoft Visual Studio
-if (MSVC)
-  add_definitions(-DORTHANC_USE_PRECOMPILED_HEADERS=1)
-
-  ADD_VISUAL_STUDIO_PRECOMPILED_HEADERS(
-    "PrecompiledHeaders.h" "Core/PrecompiledHeaders.cpp" ORTHANC_CORE_SOURCES)
-
-  ADD_VISUAL_STUDIO_PRECOMPILED_HEADERS(
-    "PrecompiledHeadersServer.h" "OrthancServer/PrecompiledHeadersServer.cpp" ORTHANC_SERVER_SOURCES)
-
-  ADD_VISUAL_STUDIO_PRECOMPILED_HEADERS(
-    "PrecompiledHeadersUnitTests.h" "UnitTestsSources/PrecompiledHeadersUnitTests.cpp" ORTHANC_UNIT_TESTS_SOURCES)
-endif()
-
 if (UNIT_TESTS_WITH_HTTP_CONNEXIONS)
   add_definitions(-DUNIT_TESTS_WITH_HTTP_CONNEXIONS=1)
 else()
   add_definitions(-DUNIT_TESTS_WITH_HTTP_CONNEXIONS=0)
 endif()
 
+include_directories(${CMAKE_SOURCE_DIR}/Plugins/Include)
+
 add_definitions(
   -DORTHANC_VERSION="${ORTHANC_VERSION}"
   -DORTHANC_DATABASE_VERSION=${ORTHANC_DATABASE_VERSION}
@@ -425,6 +414,26 @@
   )
 
 
+# Setup precompiled headers for Microsoft Visual Studio
+
+# WARNING: There must be NO MORE "add_definitions()", "include()" or
+# "include_directories()" below, otherwise the generated precompiled
+# headers might get broken!
+
+if (MSVC)
+  add_definitions(-DORTHANC_USE_PRECOMPILED_HEADERS=1)
+
+  ADD_VISUAL_STUDIO_PRECOMPILED_HEADERS(
+    "PrecompiledHeaders.h" "Core/PrecompiledHeaders.cpp" ORTHANC_CORE_SOURCES)
+
+  ADD_VISUAL_STUDIO_PRECOMPILED_HEADERS(
+    "PrecompiledHeadersServer.h" "OrthancServer/PrecompiledHeadersServer.cpp" ORTHANC_SERVER_SOURCES)
+
+  ADD_VISUAL_STUDIO_PRECOMPILED_HEADERS(
+    "PrecompiledHeadersUnitTests.h" "UnitTestsSources/PrecompiledHeadersUnitTests.cpp" ORTHANC_UNIT_TESTS_SOURCES)
+endif()
+
+
 
 #####################################################################
 ## Build the core of Orthanc
@@ -435,6 +444,8 @@
   add_library(OpenSSL STATIC ${OPENSSL_SOURCES})
 endif()
 
+# "CodeLibrary" contains all the third-party dependencies and the
+# content of the "Core" folder, but not OpenSSL, nor DCMTK.
 add_library(CoreLibrary
   STATIC
   ${ORTHANC_CORE_SOURCES}
@@ -465,6 +476,7 @@
 ## Build the Orthanc server
 #####################################################################
 
+# "ServerLibrary" contains DCMTK
 add_library(ServerLibrary
   STATIC
   ${DCMTK_SOURCES}
@@ -496,11 +508,11 @@
 ## Build the unit tests
 #####################################################################
 
-include(${CMAKE_SOURCE_DIR}/Resources/CMake/GoogleTestConfiguration.cmake)
 add_executable(UnitTests
   ${GTEST_SOURCES}
   ${ORTHANC_UNIT_TESTS_SOURCES}
   )
+
 target_link_libraries(UnitTests ServerLibrary CoreLibrary ${DCMTK_LIBRARIES})
 
 if (${OPENSSL_SOURCES_LENGTH} GREATER 0)
@@ -530,8 +542,6 @@
     list(APPEND SERVE_FOLDERS_RESOURCES ${AUTOGENERATED_DIR}/ServeFolders.rc)
   endif()  
 
-  include_directories(${CMAKE_SOURCE_DIR}/Plugins/Include)
-
   add_library(ServeFolders SHARED 
     ${BOOST_SOURCES}
     ${JSONCPP_SOURCES}
@@ -575,8 +585,6 @@
     list(APPEND MODALITY_WORKLISTS_RESOURCES ${AUTOGENERATED_DIR}/ModalityWorklists.rc)
   endif()
 
-  include_directories(${CMAKE_SOURCE_DIR}/Plugins/Include)
-
   add_library(ModalityWorklists SHARED 
     ${BOOST_SOURCES}
     ${JSONCPP_SOURCES}
@@ -606,21 +614,6 @@
 if (BUILD_RECOVER_COMPRESSED_FILE)
   set(RECOVER_COMPRESSED_SOURCES
     Resources/Samples/Tools/RecoverCompressedFile.cpp
-
-    ${CMAKE_SOURCE_DIR}/Core/ChunkedBuffer.cpp
-    ${CMAKE_SOURCE_DIR}/Core/Compression/DeflateBaseCompressor.cpp
-    ${CMAKE_SOURCE_DIR}/Core/Compression/ZlibCompressor.cpp
-    ${CMAKE_SOURCE_DIR}/Core/Enumerations.cpp
-    ${CMAKE_SOURCE_DIR}/Core/Logging.cpp
-    ${CMAKE_SOURCE_DIR}/Core/Toolbox.cpp
-    ${CMAKE_SOURCE_DIR}/Resources/ThirdParty/base64/base64.cpp
-    ${CMAKE_SOURCE_DIR}/Resources/ThirdParty/md5/md5.c
-
-    ${BOOST_SOURCES}
-    ${JSONCPP_SOURCES}
-    ${PUGIXML_SOURCES}
-    ${RECOVER_COMPRESSED_SOURCES}
-    ${ZLIB_SOURCES}
     )
 
   if (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
@@ -644,6 +637,8 @@
 
   add_executable(OrthancRecoverCompressedFile ${RECOVER_COMPRESSED_SOURCES})
 
+  target_link_libraries(OrthancRecoverCompressedFile CoreLibrary)
+
   install(
     TARGETS OrthancRecoverCompressedFile
     RUNTIME DESTINATION bin

--- a/Resources/Samples/Tools/RecoverCompressedFile.cpp	Tue Jun 21 13:52:22 2016 +0200
+++ b/Resources/Samples/Tools/RecoverCompressedFile.cpp	Tue Jun 21 14:29:45 2016 +0200
@@ -18,7 +18,6 @@
  **/
 
 
-#include "../../../Core/PrecompiledHeaders.h"
 #include "../../../Core/Compression/ZlibCompressor.h"
 #include "../../../Core/Toolbox.h"
 #include "../../../Core/OrthancException.h"