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## Only present and build DCMTK options if ITKIODCMTK is requested
option(ITK_USE_SYSTEM_DCMTK "Use an outside build of DCMTK." OFF)
if(NOT WIN32)
set(lib_prefix lib)
if(BUILD_SHARED_LIBS)
set(lib_suffix "${CMAKE_SHARED_LIBRARY_SUFFIX}")
set(lib_prefix "${CMAKE_SHARED_LIBRARY_PREFIX}")
else()
set(lib_suffix "${CMAKE_STATIC_LIBRARY_SUFFIX}")
set(lib_prefix "${CMAKE_STATIC_LIBRARY_PREFIX}")
endif()
else()
set(lib_prefix "")
if(BUILD_SHARED_LIBS)
set(lib_suffix "${CMAKE_IMPORT_LIBRARY_SUFFIX}")
set(lib_prefix "${CMAKE_IMPORT_LIBRARY_PREFIX}")
else()
set(lib_suffix "${CMAKE_STATIC_LIBRARY_SUFFIX}")
set(lib_prefix "${CMAKE_IMPORT_LIBRARY_PREFIX}")
endif()
endif()
if(ITK_USE_SYSTEM_DCMTK)
# Use local FindDCMTK.cmake.
list(INSERT CMAKE_MODULE_PATH 0 "${CMAKE_CURRENT_LIST_DIR}/CMake")
find_package(DCMTK REQUIRED NO_MODULE)
else(ITK_USE_SYSTEM_DCMTK)
# Change default from OFF to ON for portability.
option(DCMTK_ENABLE_BUILTIN_OFICONV_DATA "Embed oficonv data files into oficonv library" ON)
# Copied and mofified from DCMTK/CMake/3rdparty.cmake
if(NOT DEFINED DCMTK_USE_ICU)
include(CheckCXXSourceCompiles)
check_cxx_source_compiles("#include <iconv.h>\nint main(){iconv_t cd = iconv_open(\"\",\"\");iconv(cd,0,0,0,0);iconv_close(cd);return 0;}" WITH_STDLIBC_ICONV)
if(WITH_STDLIBC_ICONV)
message(STATUS "Info: found builtin ICONV support inside the C standard library.")
set(CHARSET_CONVERSION_ARGS
-DDCMTK_WITH_STDLIBC_ICONV:BOOL=ON
-DDCMTK_WITH_ICU:BOOL=OFF
"-DDCMTK_ENABLE_CHARSET_CONVERSION:STRING=stdlibc (iconv)"
CACHE INTERNAL "DCMTK Internal arguments"
)
endif()
# ICU creates problems on MacOS and Windows, so by default it is disabled.
# On Linux, the C standard library can have builtin ICONV support. We
# disable building ICU by default.
option(DCMTK_USE_ICU "Downloads and compile ICU for DCMTK" OFF)
endif()
if(DCMTK_USE_ICU)
if(ITK_USE_SYSTEM_ICU)
find_package(ICU REQUIRED COMPONENTS uc data)
set(ITKDCMTK_ICU_LIBRARIES ${ICU_LIBRARIES})
endif()
endif()
endif(ITK_USE_SYSTEM_DCMTK)
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