FindDCMTK: Improve compatibility with DCMTKConfig.cmake.
This improvement to the FindDCMTK module improves compatibility with recent DCMTK, which provides a DCMTKConfig.cmake file. See the module comments for a compatibility matrix. It also provides DCMTK_INCLUDE_DIRS. Ported from CommonTK (commontk.org).
This commit is contained in:
Jean-Christophe Fillion-Robin
Matt McCormick
parent
a9e8b123de
commit
31b4700ed6
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@ -2,9 +2,10 @@
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# FindDCMTK
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# ---------
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#
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# find DCMTK libraries and applications
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# DCMTK_INCLUDE_DIRS - Directories to include to use DCMTK
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# - find DCMTK libraries and applications
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# The module defines the following variables:
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#
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# DCMTK_INCLUDE_DIRS - Directories to include to use DCMTK
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# DCMTK_LIBRARIES - Files to link against to use DCMTK
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# DCMTK_FOUND - If false, don't try to use DCMTK
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# DCMTK_DIR - (optional) Source directory for DCMTK
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@ -12,8 +13,91 @@
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# DCMTK_DIR can be used to make it simpler to find the various include
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# directories and compiled libraries if you've just compiled it in the
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# source tree. Just set it to the root of the tree where you extracted
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# the source (default to /usr/include/dcmtk/)
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# the source (default to /usr)
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#
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#
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# This file is able to find version of DCMTK that do or do not export
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# a DCMTKConfig.cmake file.
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#
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# IMPORTANT: A set of patches has been contributed to DCMTK
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# maintainers, as soon as:
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# (1) it has been integrated upstream so that it is available in
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# an official release (for example X.Y.Z),
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# (2) code bases have been updated to build against X.Y.Z
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# This file could be removed.
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#
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# The set of patches is listed here: https://github.com/commontk/DCMTK/compare/79030ba...f461865
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#
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#
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# Waiting for this to happen, build systems will have to be able
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# to support different versions of DCMTK.
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#
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# On any given system, the following combination of DCMTK version could be
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# considered:
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#
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# | SYSTEM DCMTK + LOCAL DCMTK | Supported ? |
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# ---------------------------------------------------------------------------
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# Case A | NA + [ ] DCMTKConfig | YES |
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# ------------------------------------------------------|--------------------
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# Case B | NA + [X] DCMTKConfig | YES |
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# ------------------------------------------------------|--------------------
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# Case C | [ ] DCMTKConfig + NA | YES |
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# ------------------------------------------------------|--------------------
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# Case D | [X] DCMTKConfig + NA | YES |
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# ------------------------------------------------------|--------------------
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# Case E | [ ] DCMTKConfig + [ ] DCMTKConfig | YES (*) |
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# ------------------------------------------------------|--------------------
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# Case F | [X] DCMTKConfig + [ ] DCMTKConfig | NO |
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# ------------------------------------------------------|--------------------
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# Case G | [ ] DCMTKConfig + [X] DCMTKConfig | YES |
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# ------------------------------------------------------|--------------------
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# Case H | [X] DCMTKConfig + [X] DCMTKConfig | YES |
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# ---------------------------------------------------------------------------
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#
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# (*) See Troubleshooting section.
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#
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# Legend:
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#
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# NA ...............: Means that no System or Local DCMTK is available
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#
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# [ ] DCMTKConfig ..: Means that the version of DCMTK does NOT export a DCMTKConfig.cmake file.
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#
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# [X] DCMTKConfig ..: Means that the version of DCMTK exports a DCMTKConfig.cmake file.
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#
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#
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#
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# In CTK commits 52d953 and 74b4b07, the FindDCMTK.cmake module has been updated to be able
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# to find both version of DCMTK ([ ] DCMTKConfig and [X] DCMTKConfig).
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#
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# It is a two steps process:
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#
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# * Step 1: Attempt to find DCMTK version providing a DCMTKConfig.cmake file. This is done
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# with the help of ''
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#
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# * Step 2: If step 1 failed, rely on FindDCMTK.cmake to set DCMTK_* variables details below.
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#
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#
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#
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# Troubleshooting:
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#
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# What to do if my project find a different version of DCMTK ?
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#
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# Remove DCMTK entry from the CMake registry.
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# Search for "CMake user package registry" on http://www.cmake.org/cmake/help/v2.8.9/cmake.html#command:find_package
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#
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# Details: As some point, the DCMTK build tree was exported [1][2][3]. Indeed, before the set of
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# patches discussed above has been contributed to upstream DCMTK, an initial implementation of
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# a DCMTK build system exporting its build tree has been implemented and has been tested by some
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# folks. This had the effect of populating the CMake registry.
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#
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# Since Step1 does not exclude the CMake registry, when dealing with case E, the incorrect version of
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# DCMTK could be found.
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#
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# [1] http://slicer-devel.65872.n3.nabble.com/Packaging-seems-to-work-again-tp4028121p4028134.html
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# [2] https://www.assembla.com/spaces/slicerrt/tickets/244-dcmtk_dir-vs--dcmtkconfig-cmake?comment=267984263#comment:267984263
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# [3] http://www.cmake.org/cmake/help/v2.8.11/cmake.html#command:export
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#
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#
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#=============================================================================
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# Copyright 2004-2009 Kitware, Inc.
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# Copyright 2009-2010 Mathieu Malaterre <mathieu.malaterre@gmail.com>
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@ -26,7 +110,7 @@
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# (To distributed this file outside of CMake, substitute the full
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# License text for the above reference.)
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#
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@ -35,50 +119,133 @@
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# Modified for EasyViz by Thomas Sondergaard.
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#
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if(NOT DCMTK_FOUND AND NOT DCMTK_DIR)
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set(DCMTK_DIR
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"/usr/include/dcmtk/"
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CACHE
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PATH
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"Root of DCMTK source tree (optional).")
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mark_as_advanced(DCMTK_DIR)
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set(_dcmtk_dir_description "The directory of DCMTK build or install tree.")
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# Ensure that DCMTK_DIR is set to a reasonable default value
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# so that DCMTK libraries can be found on a standard Unix distribution.
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# It also overwrite the value of DCMTK_DIR after this one has been
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# set by a successful discovery of DCMTK by the unpatched FindDCMTK.cmake module
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# distributed with CMake (as of 0167cea)
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if(NOT DCMTK_DIR OR DCMTK_DIR STREQUAL "/usr/include/dcmtk")
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set(DCMTK_DIR "/usr" CACHE PATH ${_dcmtk_dir_description} FORCE)
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endif()
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set(_SAVED_DCMTK_DIR ${DCMTK_DIR})
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#
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# Step1: Attempt to find a version of DCMTK providing a DCMTKConfig.cmake file.
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#
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message(STATUS "Trying to find DCMTK expecting DCMTKConfig.cmake")
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find_package(DCMTK QUIET NO_MODULE)
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if(DCMTK_FOUND
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AND NOT "x" STREQUAL "x${DCMTK_LIBRARIES}"
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AND NOT "x" STREQUAL "x${DCMTK_INCLUDE_DIRS}")
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message(STATUS "Trying to find DCMTK expecting DCMTKConfig.cmake - ok")
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return()
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else()
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message(STATUS "Trying to find DCMTK expecting DCMTKConfig.cmake - failed")
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endif()
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message(STATUS "Trying to find DCMTK relying on FindDCMTK.cmake")
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# Restore the value reset by the previous call to 'find_package(DCMTK QUIET NO_MODULE)'
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set(DCMTK_DIR ${_SAVED_DCMTK_DIR} CACHE PATH ${_dcmtk_dir_description} FORCE)
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#
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# Step2: Attempt to find a version of DCMTK that does NOT provide a DCMTKConfig.cmake file.
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#
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# prefer DCMTK_DIR over default system paths like /usr/lib
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if(DCMTK_DIR)
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set(CMAKE_PREFIX_PATH ${DCMTK_DIR}/lib ${CMAKE_PREFIX_PATH}) # this is given to FIND_LIBRARY or FIND_PATH
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endif()
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# Find all libraries, store debug and release separately
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foreach(lib
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dcmdata
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dcmpstat
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dcmsr
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dcmsign
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dcmtls
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dcmqrdb
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dcmnet
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dcmjpeg
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dcmimage
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dcmimgle
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dcmjpeg
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dcmnet
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dcmpstat
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dcmqrdb
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dcmsign
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dcmsr
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dcmtls
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dcmdata
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oflog
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ofstd
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ijg12
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ijg16
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ijg8
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ofstd)
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)
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find_library(DCMTK_${lib}_LIBRARY
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# Find Release libraries
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find_library(DCMTK_${lib}_LIBRARY_RELEASE
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${lib}
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PATHS
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${DCMTK_DIR}/${lib}/libsrc
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${DCMTK_DIR}/${lib}/libsrc/Release
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${DCMTK_DIR}/${lib}/libsrc/Debug
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${DCMTK_DIR}/${lib}/Release
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${DCMTK_DIR}/lib
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${DCMTK_DIR}/lib/Release
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${DCMTK_DIR}/dcmjpeg/lib${lib}/Release
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NO_DEFAULT_PATH
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)
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# Find Debug libraries
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find_library(DCMTK_${lib}_LIBRARY_DEBUG
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${lib}${DCMTK_CMAKE_DEBUG_POSTFIX}
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PATHS
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${DCMTK_DIR}/${lib}/libsrc
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${DCMTK_DIR}/${lib}/libsrc/Debug
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${DCMTK_DIR}/${lib}/Debug
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${DCMTK_DIR}/lib)
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${DCMTK_DIR}/lib
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${DCMTK_DIR}/lib/Debug
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${DCMTK_DIR}/dcmjpeg/lib${lib}/Debug
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NO_DEFAULT_PATH
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)
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mark_as_advanced(DCMTK_${lib}_LIBRARY)
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mark_as_advanced(DCMTK_${lib}_LIBRARY_RELEASE)
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mark_as_advanced(DCMTK_${lib}_LIBRARY_DEBUG)
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if(DCMTK_${lib}_LIBRARY)
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list(APPEND DCMTK_LIBRARIES ${DCMTK_${lib}_LIBRARY})
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# Add libraries to variable according to build type
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if(DCMTK_${lib}_LIBRARY_RELEASE)
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list(APPEND DCMTK_LIBRARIES optimized ${DCMTK_${lib}_LIBRARY_RELEASE})
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endif()
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if(DCMTK_${lib}_LIBRARY_DEBUG)
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list(APPEND DCMTK_LIBRARIES debug ${DCMTK_${lib}_LIBRARY_DEBUG})
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endif()
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endforeach()
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set(CMAKE_THREAD_LIBS_INIT)
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if(DCMTK_oflog_LIBRARY_RELEASE OR DCMTK_oflog_LIBRARY_DEBUG)
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# Hack - Not having a DCMTKConfig.cmake file to read the settings from, we will attempt to
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# find the library in all cases.
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# Ideally, pthread library should be discovered only if DCMTK_WITH_THREADS is enabled.
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set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
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find_package(Threads)
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endif()
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if(CMAKE_THREAD_LIBS_INIT)
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list(APPEND DCMTK_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
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endif()
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#
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# SPECIFIC CASE FOR DCMTK BUILD DIR as DCMTK_DIR
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# (as opposed to a DCMTK install dir)
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# Have to find the source directory.
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if(EXISTS ${DCMTK_DIR}/CMakeCache.txt)
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load_cache(${DCMTK_DIR} READ_WITH_PREFIX "EXT"
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DCMTK_SOURCE_DIR)
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if(NOT EXISTS ${EXTDCMTK_SOURCE_DIR})
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message(FATAL_ERROR
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"DCMTK build directory references
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nonexistant DCMTK source directory ${EXTDCMTK_SOURCE_DIR}")
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endif()
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endif()
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set(DCMTK_config_TEST_HEADER osconfig.h)
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set(DCMTK_dcmdata_TEST_HEADER dctypes.h)
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@ -92,6 +259,10 @@ set(DCMTK_dcmsign_TEST_HEADER sicert.h)
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set(DCMTK_dcmsr_TEST_HEADER dsrtree.h)
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set(DCMTK_dcmtls_TEST_HEADER tlslayer.h)
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set(DCMTK_ofstd_TEST_HEADER ofstdinc.h)
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set(DCMTK_oflog_TEST_HEADER oflog.h)
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set(DCMTK_dcmjpls_TEST_HEADER djlsutil.h)
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set(DCMTK_INCLUDE_DIR_NAMES)
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foreach(dir
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config
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@ -99,31 +270,47 @@ foreach(dir
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dcmimage
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dcmimgle
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dcmjpeg
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dcmjpls
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dcmnet
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dcmpstat
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dcmqrdb
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dcmsign
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dcmsr
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dcmtls
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ofstd)
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ofstd
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oflog)
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if(EXTDCMTK_SOURCE_DIR)
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set(SOURCE_DIR_PATH
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${EXTDCMTK_SOURCE_DIR}/${dir}/include/dcmtk/${dir})
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endif()
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find_path(DCMTK_${dir}_INCLUDE_DIR
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${DCMTK_${dir}_TEST_HEADER}
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PATHS
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${DCMTK_DIR}/${dir}/include
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${DCMTK_DIR}/${dir}
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${DCMTK_DIR}/include/${dir}
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${DCMTK_DIR}/include/dcmtk/${dir}
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${DCMTK_DIR}/${dir}/include/dcmtk/${dir}
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${DCMTK_DIR}/include/${dir}
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${SOURCE_DIR_PATH}
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)
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mark_as_advanced(DCMTK_${dir}_INCLUDE_DIR)
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list(APPEND DCMTK_INCLUDE_DIR_NAMES DCMTK_${dir}_INCLUDE_DIR)
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if(DCMTK_${dir}_INCLUDE_DIR)
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# add the 'include' path so eg
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#include "dcmtk/dcmimgle/dcmimage.h"
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# works
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get_filename_component(_include ${DCMTK_${dir}_INCLUDE_DIR} PATH)
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get_filename_component(_include ${_include} PATH)
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list(APPEND
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DCMTK_INCLUDE_DIRS
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${DCMTK_${dir}_INCLUDE_DIR})
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${DCMTK_${dir}_INCLUDE_DIR}
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${_include})
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endif()
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endforeach()
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list(APPEND DCMTK_INCLUDE_DIRS ${DCMTK_DIR}/include)
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if(WIN32)
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list(APPEND DCMTK_LIBRARIES netapi32 wsock32)
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endif()
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@ -137,21 +324,28 @@ if(DCMTK_ofstd_INCLUDE_DIR)
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mark_as_advanced(DCMTK_dcmtk_INCLUDE_DIR)
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endif()
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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find_package_handle_standard_args(DCMTK DEFAULT_MSG
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DCMTK_config_INCLUDE_DIR
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DCMTK_ofstd_INCLUDE_DIR
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DCMTK_ofstd_LIBRARY
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DCMTK_dcmdata_INCLUDE_DIR
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DCMTK_dcmdata_LIBRARY
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DCMTK_dcmimgle_INCLUDE_DIR
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DCMTK_dcmimgle_LIBRARY)
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# Compatibility: This variable is deprecated
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set(DCMTK_INCLUDE_DIR ${DCMTK_INCLUDE_DIRS})
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foreach(executable dcmdump dcmdjpeg dcmdrle)
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string(TOUPPER ${executable} EXECUTABLE)
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find_program(DCMTK_${EXECUTABLE}_EXECUTABLE ${executable} ${DCMTK_DIR}/bin)
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mark_as_advanced(DCMTK_${EXECUTABLE}_EXECUTABLE)
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endforeach()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(DCMTK
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REQUIRED_VARS ${DCMTK_INCLUDE_DIR_NAMES} DCMTK_LIBRARIES
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FAIL_MESSAGE "Please set DCMTK_DIR and re-run configure")
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# Workaround bug in packaging of DCMTK 3.6.0 on Debian.
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# See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=637687
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if(DCMTK_FOUND AND UNIX AND NOT APPLE)
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include(CheckCXXSourceCompiles)
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set(CMAKE_REQUIRED_FLAGS )
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set(CMAKE_REQUIRED_DEFINITIONS )
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set(CMAKE_REQUIRED_INCLUDES ${DCMTK_INCLUDE_DIRS})
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set(CMAKE_REQUIRED_LIBRARIES ${DCMTK_LIBRARIES})
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check_cxx_source_compiles("#include <dcmtk/config/osconfig.h>\n#include <dcmtk/ofstd/ofstream.h>\nint main(int,char*[]){return 0;}"
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DCMTK_HAVE_CONFIG_H_OPTIONAL
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)
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if(NOT DCMTK_HAVE_CONFIG_H_OPTIONAL)
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set(DCMTK_DEFINITIONS "HAVE_CONFIG_H")
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endif()
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endif()
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message(STATUS "Trying to find DCMTK relying on FindDCMTK.cmake - ok")
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