vcpkg/ports/itk/dependencies.diff

diff --git a/CMake/ITKConfig.cmake.in b/CMake/ITKConfig.cmake.in
index 7a77ae3..6a565e8 100644
--- a/CMake/ITKConfig.cmake.in
+++ b/CMake/ITKConfig.cmake.in
@@ -1,3 +1,8 @@
+include(CMakeFindDependencyMacro)
+find_dependency(double-conversion CONFIG)
+find_dependency(OpenJPEG CONFIG)
+find_dependency(VXL CONFIG)
+include("${VXL_CMAKE_DIR}/UseVXL.cmake")
 #-----------------------------------------------------------------------------
 #
 # ITKConfig.cmake - ITK CMake configuration file for external projects.
diff --git a/CMake/itkOpenCL.cmake b/CMake/itkOpenCL.cmake
index 21aab8c..f2bf8ae 100644
--- a/CMake/itkOpenCL.cmake
+++ b/CMake/itkOpenCL.cmake
@@ -1,5 +1,7 @@
 if(ITK_USE_GPU)
   find_package(OpenCL REQUIRED)
+  set(OPENCL_INCLUDE_DIRS "${OpenCL_INCLUDE_DIRS}")
+  set(OPENCL_LIBRARIES "${OpenCL_LIBRARIES}")
   if(NOT ${OPENCL_FOUND})
     message(FATAL "Could not find OpenCL")
   endif()
diff --git a/Modules/ThirdParty/DoubleConversion/CMakeLists.txt b/Modules/ThirdParty/DoubleConversion/CMakeLists.txt
index 135c1d3..f644a32 100644
--- a/Modules/ThirdParty/DoubleConversion/CMakeLists.txt
+++ b/Modules/ThirdParty/DoubleConversion/CMakeLists.txt
@@ -7,9 +7,9 @@ option(ITK_USE_SYSTEM_DOUBLECONVERSION
 mark_as_advanced(ITK_USE_SYSTEM_DOUBLECONVERSION)
 
 if(ITK_USE_SYSTEM_DOUBLECONVERSION)
-  find_package(double-conversion 3.1.6 REQUIRED)
+  find_package(double-conversion 3.1.6 REQUIRED GLOBAL)
   get_target_property(ITKDoubleConversion_INCLUDE_DIRS double-conversion::double-conversion INTERFACE_INCLUDE_DIRECTORIES)
-  get_target_property(ITKDoubleConversion_LIBRARIES double-conversion::double-conversion LOCATION)
+  set(ITKDoubleConversion_LIBRARIES double-conversion::double-conversion)
 else()
   set(ITKDoubleConversion_INCLUDE_DIRS
     ${ITKDoubleConversion_SOURCE_DIR}/src
diff --git a/Modules/ThirdParty/Eigen3/CMakeLists.txt b/Modules/ThirdParty/Eigen3/CMakeLists.txt
index 8dbbb86..428d335 100644
--- a/Modules/ThirdParty/Eigen3/CMakeLists.txt
+++ b/Modules/ThirdParty/Eigen3/CMakeLists.txt
@@ -88,7 +88,7 @@ find_package(${_Eigen3_SYSTEM_OR_INTERNAL} ${_Eigen3_min_version} REQUIRED CONFI
 # Eigen3 targets are not installed if ITK_USE_SYSTEM_EIGEN==True
 itk_module_impl()
 
-configure_file(src/itk_eigen.h.in src/itk_eigen.h)
+configure_file(src/itk_eigen.h.in src/itk_eigen.h @ONLY)
 install(FILES ${ITKEigen3_BINARY_DIR}/src/itk_eigen.h
   DESTINATION ${ITKEigen3_INSTALL_INCLUDE_DIR}
   COMPONENT Development
diff --git a/Modules/ThirdParty/OpenJPEG/CMakeLists.txt b/Modules/ThirdParty/OpenJPEG/CMakeLists.txt
index 103eaa9..b59eb81 100644
--- a/Modules/ThirdParty/OpenJPEG/CMakeLists.txt
+++ b/Modules/ThirdParty/OpenJPEG/CMakeLists.txt
@@ -1,12 +1,19 @@
 project(ITKOpenJPEG)
 set(ITKOpenJPEG_THIRD_PARTY 1)
 
+if(ITK_USE_SYSTEM_OpenJPEG)
+  find_package(OpenJPEG CONFIG REQUIRED GLOBAL)
+  set(ITKOpenJPEG_INCLUDE_DIRS "")
+  set(ITKOpenJPEG_LIBRARIES $<TARGET_NAME:openjp2>)
+  set(ITKOpenJPEG_NO_SRC 1)
+else()
 set(ITKOpenJPEG_INCLUDE_DIRS
   ${ITKOpenJPEG_BINARY_DIR}/src/openjpeg
   ${ITKOpenJPEG_SOURCE_DIR}/src/openjpeg
   )
 set(ITKOpenJPEG_LIBRARIES itkopenjpeg)
 set(ITK_LIBRARY_PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS FALSE)
+endif()
 
 itk_module_impl()
 
diff --git a/Modules/ThirdParty/VNL/CMakeLists.txt b/Modules/ThirdParty/VNL/CMakeLists.txt
index c379a24..6a15432 100644
--- a/Modules/ThirdParty/VNL/CMakeLists.txt
+++ b/Modules/ThirdParty/VNL/CMakeLists.txt
@@ -5,7 +5,7 @@ option(ITK_USE_SYSTEM_VXL "Use an outside build of VXL." OFF)
 mark_as_advanced(ITK_USE_SYSTEM_VXL)
 
 if(ITK_USE_SYSTEM_VXL)
-  find_package(VXL 3.0.0 REQUIRED)
+  find_package(VXL 3.0.0 REQUIRED GLOBAL)
   # 3.0.0 is the first version of VXL that supports
   # the requirement of front() and back() members
   # in the vnl_vector and vnl_vector_fixed.
@@ -17,7 +17,8 @@ if(ITK_USE_SYSTEM_VXL)
     ${VXL_CORE_INCLUDE_DIR}
     )
   set(ITKVNL_LIBRARIES vnl_algo vnl v3p_netlib netlib vcl)
-  set(ITKVNL_SYSTEM_LIBRARY_DIRS "${VXL_LIBRARY_DIR}")
+  list(TRANSFORM ITKVNL_LIBRARIES REPLACE "^(.+)\$" "\$<TARGET_NAME:\\1>")
+  set(ITKVNL_SYSTEM_LIBRARY_DIRS "")
   set(ITKVNL_NO_SRC 1)
 else()