if (WITH_DOCS)


    set (TOP_DIR YES)

set(DOCS_SOURCE_DIR ${CMAKE_SOURCE_DIR}/docs)

SET (CMAKE_HTML_EXTRA_)

SET( EXT
  ${DOCS_SOURCE_DIR}/custom/application.js
  ${DOCS_SOURCE_DIR}/custom/assets
    ${DOCS_SOURCE_DIR}/custom/bootstrap.min.css
    ${DOCS_SOURCE_DIR}/custom/bootstrap.min.js
    ${DOCS_SOURCE_DIR}/custom/customdoxygen.css
    ${DOCS_SOURCE_DIR}/custom/default
    ${DOCS_SOURCE_DIR}/custom/doxy-boot.js
    ${DOCS_SOURCE_DIR}/custom/font-awesome.min.css
    ${DOCS_SOURCE_DIR}/custom/footer.html
    ${DOCS_SOURCE_DIR}/custom/header.html
    ${DOCS_SOURCE_DIR}/custom/jquery-3.2.1.min.js
    ${DOCS_SOURCE_DIR}/custom/offcanvas.css
    ${DOCS_SOURCE_DIR}/custom/offcanvas.js
    ${DOCS_SOURCE_DIR}/custom/solarized-light.css
    ${DOCS_SOURCE_DIR}/custom/theme.css
    ${DOCS_SOURCE_DIR}/custom/yap.css
    )
  
    foreach(i ${CMAKE_HTML_EXTRA_})
      string(APPEND CMAKE_HTML_EXTRA ${i} " ")
    endforeach(i ${CMAKE_HTML_EXTRA_})


set(DOC_DIRS_EXCLUDE_
${CMAKE_SOURCE_DIR}/build
${CMAKE_SOURCE_DIR}/Debug
${CMAKE_SOURCE_DIR}/packages/jpl
${CMAKE_SOURCE_DIR}/packages/swi
${CMAKE_SOURCE_DIR}/packages/Problog/problog_examples
${CMAKE_SOURCE_DIR}/packages/myddas/sqlite3/src
${CMAKE_SOURCE_DIR}/packages/gecode/6.0.1
${CMAKE_SOURCE_DIR}/packages/gecode/6.0.0
${CMAKE_SOURCE_DIR}/packages/gecode/5.1.0
${CMAKE_SOURCE_DIR}/packages/gecode/5.0.0
${CMAKE_SOURCE_DIR}/packages/gecode/4.4.0
${CMAKE_SOURCE_DIR}/packages/gecode/4.2.1
${CMAKE_SOURCE_DIR}/packages/gecode/4.2.0
${CMAKE_SOURCE_DIR}/packages/gecode/4.0.0
${CMAKE_SOURCE_DIR}/packages/gecode/3.7.3
${CMAKE_SOURCE_DIR}/packages/gecode/3.7.2
${CMAKE_SOURCE_DIR}/packages/gecode/3.7.1
${CMAKE_SOURCE_DIR}/packages/gecode/3.7.0
${CMAKE_SOURCE_DIR}/packages/gecode/3.6.0
${CMAKE_SOURCE_DIR}/packages/gecode/dev
${CMAKE_SOURCE_DIR}/packages/cplint
${CMAKE_SOURCE_DIR}/packages/CLPBN/examples
${CMAKE_SOURCE_DIR}/packages/CLPBN/horus
${CMAKE_SOURCE_DIR}/packages/cuda
${CMAKE_SOURCE_DIR}/packages/prosqlite
${CMAKE_SOURCE_DIR}/packages/pyswip
${CMAKE_SOURCE_DIR}/packages/python/yap_kernel
${CMAKE_SOURCE_DIR}/packages/python/swig
${CMAKE_SOURCE_DIR}/packages/yap-lbfgs/liblbfgs-1.10
${CMAKE_SOURCE_DIR}/packages/swi-minisat2
${CMAKE_SOURCE_DIR}/library/dialect/swi/os
)


set(DOCS_EXCLUDE_
${CMAKE_SOURCE_DIR}/C/traced_absmi_insts.h
${CMAKE_SOURCE_DIR}/H/globals.h
${CMAKE_SOURCE_DIR}/OPTYap/locks_alpha_funcs.h
${CMAKE_SOURCE_DIR}/OPTYap/locks_mips_funcs.h
${CMAKE_SOURCE_DIR}/OPTYap/locks_sparc.h
${CMAKE_SOURCE_DIR}/*/bprolog/* 
                         ${CMAKE_SOURCE_DIR}/*/prism/* 
                         ${CMAKE_SOURCE_DIR}/*/gecode/[345]*
                         ${CMAKE_SOURCE_DIR}/packages/gecode/gecode3_yap.cc 
                         ${CMAKE_SOURCE_DIR}/packages/gecode/gecode4_yap.cc 
                         ${CMAKE_SOURCE_DIR}/packages/gecode/gecode5_yap.cc 
                         ${CMAKE_SOURCE_DIR}/packages/gecode/gecode3.yap 
                         ${CMAKE_SOURCE_DIR}/packages/gecode/gecode4.yap 
                         ${CMAKE_SOURCE_DIR}/packages/gecode/gecode5.yap 
                         ${CMAKE_SOURCE_DIR}/packages/gecode/gecode3_yap_hand_written.yap  
                         ${CMAKE_SOURCE_DIR}/packages/gecode/gecode4_yap_hand_written.yap
			 ${CMAKE_SOURCE_DIR}/packages/gecode/gecode5_yap_hand_written.yap
   */CMakeFiles/*
)



foreach(i ${DOCS_EXCLUDE_})
  string(APPEND DOCS_EXCLUDE ${i} " ")
endforeach(i ${DOCS_EXCLUDE_})


foreach(i ${DOCS_DIR_EXCLUDE_})
  string(APPEND DOCS_DIR_EXCLUDE ${i} " ")
endforeach(i ${DOCS_DIR_EXCLUDE_})


# add a target to generate API documentation with Doxygen


    set(doxyfile_in ${CMAKE_SOURCE_DIR}/docs/Doxyfile.in)

   add_subdirectory(../packages/raptor/doc ${CMAKE_BINARY_DIR}/packages/raptor/doc)

   SET(DOC_INPUT_FILES_
     ${CMAKE_SOURCE_DIR}/docs/md
     ${CMAKE_SOURCE_DIR}/pl
     ${CMAKE_SOURCE_DIR}/packages/ProbLog
     ${CMAKE_SOURCE_DIR}/CXX
     ${CMAKE_SOURCE_DIR}/OPTYap
     ${CMAKE_SOURCE_DIR}/C
     ${CMAKE_SOURCE_DIR}/H
     ${CMAKE_SOURCE_DIR}/include
     ${CMAKE_SOURCE_DIR}/os
     ${CMAKE_SOURCE_DIR}/library
     ${CMAKE_SOURCE_DIR}/swi/library
     #${CMAKE_SOURCE_DIR}/packages
     ${CMAKE_SOURCE_DIR}/BEAM
     )

foreach(i ${DOC_INPUT_FILES_})

  string(APPEND DOC_INPUT_FILES ${i} " ")
endforeach(i ${DOC_INPUT_FILES_})

    set(doxyfile ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)
   configure_file(${doxyfile_in} ${doxyfile} @ONLY)

   configure_file(${CMAKE_SOURCE_DIR}/docs/source/conf.py.in source/conf.py)
   configure_file(${CMAKE_SOURCE_DIR}/docs/source/index.rst source/index.rst)

add_custom_target(docs
  COMMAND ${DOXYGEN_EXECUTABLE} ${doxyfile}
  )


   if (EXISTS ${CMAKE_CURRENT_BINARY_DIR}/html)
   install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html DESTINATION ${docdir})

   install(FILES  ${CODES} DESTINATION ${docdir})
   endif()


endif()