# Top level CMakeLists.txt for CGAL
# The name of our project is "CGAL".  CMakeLists files in this project can
# refer to the root source directory of the project as ${CMAKE_SOURCE_DIR} or
# ${CMAKE_SOURCE_DIR} and to the root binary directory of the project as
# ${CMAKE_BINARY_DIR} or ${CMAKE_BINARY_DIR}.
project(CGAL)

# Minimal version of CMake:
cmake_minimum_required(VERSION 2.6.2)

# Tested version:
if("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" VERSION_GREATER 2.6)
  if("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}.${CMAKE_PATCH_VERSION}" VERSION_GREATER 2.8.3)
    cmake_policy(VERSION 2.8.4)
  else()
    cmake_policy(VERSION 2.6)
  endif()
endif()

#--------------------------------------------------------------------------------------------------
#
#                                    -= PACKAGE SETUP =-
#
#--------------------------------------------------------------------------------------------------

if ( CGAL_BRANCH_BUILD )

  message( STATUS "Build CGAL from ${CGAL_SCM_NAME}-branch: ${CGAL_SCM_BRANCH_NAME}" )

  # list packages
  file(GLOB CGAL_CONFIGURED_PACKAGES "${CMAKE_SOURCE_DIR}/*")

  # detect and remove not existing package-directories
  foreach (package ${CGAL_CONFIGURED_PACKAGES})
    if (NOT IS_DIRECTORY ${package} OR package STREQUAL "${CMAKE_SOURCE_DIR}/.svn" OR package STREQUAL "${CMAKE_SOURCE_DIR}/.git")
      list(APPEND CGAL_WRONG_PACKAGES ${package})
    endif()
  endforeach()

  if (DEFINED CGAL_WRONG_PACKAGES)
    message(STATUS "Removed not-a-package: ${CGAL_WRONG_PACKAGES}")
    list(REMOVE_ITEM CGAL_CONFIGURED_PACKAGES ${CGAL_WRONG_PACKAGES})
  endif()

  set(CGAL_INSTALLATION_PACKAGE_DIR "${CMAKE_SOURCE_DIR}/Installation" CACHE PATH "Directory containing the Installation package")
  set(CGAL_MAINTENANCE_PACKAGE_DIR "${CMAKE_SOURCE_DIR}/Maintenance" CACHE PATH "Directory containing the Maintenance package")
  set(CGAL_CORE_PACKAGE_DIR "${CMAKE_SOURCE_DIR}/Core" CACHE PATH "Directory containing the Core package")

  message(STATUS "Installation package directory: ${CGAL_INSTALLATION_PACKAGE_DIR}")
  message(STATUS "Maintenance package directory: ${CGAL_MAINTENANCE_PACKAGE_DIR}")
  message(STATUS "Core package directory: ${CGAL_CORE_PACKAGE_DIR}")

else ( CGAL_BRANCH_BUILD )

  # get release name
  file(TO_CMAKE_PATH ${CMAKE_SOURCE_DIR} CMAKE_SOURCE_CDIR)
  string(REGEX REPLACE "^/" "" CMAKE_SOURCE_DDIR ${CMAKE_SOURCE_CDIR})
  string(REPLACE "/" ";" CMAKE_SOURCE_PDIR ${CMAKE_SOURCE_DDIR})
  list(GET CMAKE_SOURCE_PDIR -1 CGAL_RELEASE_NAME)
  message( STATUS "Build CGAL from release: ${CGAL_RELEASE_NAME}" )

  # list packages
  set(CGAL_CONFIGURED_PACKAGES "${CMAKE_SOURCE_DIR}")

  set(CGAL_INSTALLATION_PACKAGE_DIR "${CMAKE_SOURCE_DIR}" CACHE PATH "Directory containing the Installation package")
  set(CGAL_MAINTENANCE_PACKAGE_DIR "${CMAKE_SOURCE_DIR}" CACHE PATH "Directory containing the Maintenance package")
  set(CGAL_CORE_PACKAGE_DIR "${CMAKE_SOURCE_DIR}" CACHE PATH "Directory containing the Core package")

endif (CGAL_BRANCH_BUILD )

#message(STATUS "Packages found: ${CGAL_CONFIGURED_PACKAGES}")

foreach (package ${CGAL_CONFIGURED_PACKAGES})
  # message(STATUS "Package: ${package}")
  # package names
  file(TO_CMAKE_PATH ${package} packagec)
  string(REGEX REPLACE "^/" "" packaged ${packagec})
  string(REPLACE "/" ";" packagepath ${packaged})
  list(GET packagepath -1 packagename)
  # message(STATUS "Packagename: ${packagename}")

  list(APPEND CGAL_CONFIGURED_PACKAGES_NAMES ${packagename})
endforeach()

list(SORT CGAL_CONFIGURED_PACKAGES_NAMES)

message(STATUS "Packagenames: ${CGAL_CONFIGURED_PACKAGES_NAMES}")

if ( CGAL_BRANCH_BUILD ) 
    
  #
  # Create version files
  #

  file(STRINGS "${CGAL_MAINTENANCE_PACKAGE_DIR}/release_building/MAJOR_NUMBER" CGAL_MAJOR_VERSION REGEX "[0-9]*")
  file(STRINGS "${CGAL_MAINTENANCE_PACKAGE_DIR}/release_building/MINOR_NUMBER" CGAL_MINOR_VERSION REGEX "[0-9]*")
  file(STRINGS "${CGAL_MAINTENANCE_PACKAGE_DIR}/release_building/BUGFIX_NUMBER" CGAL_BUGFIX_VERSION REGEX "[0-9]*")

  message( STATUS "Generate VERSION file")
  file(REMOVE ${CMAKE_BINARY_DIR}/VERSION)
  if (CGAL_BUGFIX_VERSION AND CGAL_BUGFIX_VERSION GREATER 0)  
    set(CGAL_CREATED_VERSION_NUM "${CGAL_MAJOR_VERSION}.${CGAL_MINOR_VERSION}.${CGAL_BUGFIX_VERSION}")
  else()
    set(CGAL_CREATED_VERSION_NUM "${CGAL_MAJOR_VERSION}.${CGAL_MINOR_VERSION}")
  endif()
  
  # TODO set number of internal release (replace "000")
  set(CGAL_CREATED_VERSION "${CGAL_CREATED_VERSION_NUM}-I-000")

  file(WRITE "${CMAKE_BINARY_DIR}/VERSION" "${CGAL_CREATED_VERSION_NUM}")

  message( STATUS "Generate version.h file")

  #define CGAL_VERSION 3.5-I-135
  message(STATUS "CGAL_VERSION is ${CGAL_CREATED_VERSION}")

  #define CGAL_VERSION_NR 1030500135
  string (LENGTH "${CGAL_MAJOR_VERSION}" CGAL_MAJOR_LEN)
  if ("${CGAL_MAJOR_LEN}" EQUAL 1) 
    set(CGAL_TMP_MAJOR "0${CGAL_MAJOR_VERSION}")
  endif()
  string (LENGTH "${CGAL_MINOR_VERSION}" CGAL_MINOR_LEN)
  if ("${CGAL_MINOR_LEN}" EQUAL 1) 
    set(CGAL_TMP_MINOR "0${CGAL_MINOR_VERSION}")
  endif()
  set(CGAL_CREATED_VERSION_NR "1${CGAL_TMP_MAJOR}${CGAL_TMP_MINOR}${CGAL_BUGFIX_VERSION}0000")
  message(STATUS "CGAL_VERSION_NR is 1${CGAL_TMP_MAJOR}${CGAL_TMP_MINOR}${CGAL_BUGFIX_VERSION}0000")

  if ( ${CGAL_SCM_NAME} STREQUAL "svn" )

    function(Subversion_GET_REVISION dir variable)
      # use svnversion
      execute_process(COMMAND "${SVN_EXECUTABLE}" info --xml "${dir}"
        OUTPUT_VARIABLE ${variable}
        OUTPUT_STRIP_TRAILING_WHITESPACE)
      string(REGEX REPLACE "^(.*\n)?   revision=\"([^\n]+)\".*url.*" "\\2" ${variable} "${${variable}}")
      set(${variable} ${${variable}} PARENT_SCOPE)
    endfunction(Subversion_GET_REVISION)

    # define CGAL_SVN_REVISION 50602
    Subversion_GET_REVISION("${CGAL_INSTALLATION_PACKAGE_DIR}" CGAL_TMP_REVISION)
    set(CGAL_CREATED_SVN_REVISION "${CGAL_TMP_REVISION}")
    message(STATUS "CGAL_SVN_REVISION is ${CGAL_TMP_REVISION}")
  
  endif()

  if ( ${CGAL_SCM_NAME} STREQUAL "git" )

    ### TODO GIT_NR?
    set(CGAL_GIT_HASH "n/a")

    message(STATUS "CGAL_GIT_HASH is ${CGAL_GIT_HASH}")
  endif()

  file(REMOVE ${CMAKE_BINARY_DIR}/include/CGAL/version.h)
  configure_file(${CGAL_INSTALLATION_PACKAGE_DIR}/config/version.h.in ${CMAKE_BINARY_DIR}/include/CGAL/version.h @ONLY)

  #
  # Duplicate files
  #

  if (CGAL_REPORT_DUPLICATE_FILES) 

    message(STATUS "Searching for duplicate files")

    foreach (package ${CGAL_CONFIGURED_PACKAGES})

      file(GLOB_RECURSE CGAL_PACKAGE_HEADER_FILES FOLLOW_SYMLINKS ${package}/*.h)
      foreach (file ${CGAL_PACKAGE_HEADER_FILES})
        string(REPLACE "${package}/" "" pure_file ${file})
        if (NOT ${pure_file} MATCHES ".*CMakeFiles.*")
          list(APPEND CGAL_HEADER_FILES ${pure_file})
        endif()
      endforeach()

      file(GLOB_RECURSE CGAL_PACKAGE_CPP_FILES FOLLOW_SYMLINKS ${package}/*.cpp)
      foreach (file ${CGAL_PACKAGE_CPP_FILES})
        string(REPLACE "${package}/" "" pure_file ${file})
        if (NOT ${pure_file} MATCHES ".*CMakeFiles.*")
          list(APPEND CGAL_CPP_FILES ${pure_file})
        endif()
      endforeach()

    endforeach()

    list(SORT CGAL_HEADER_FILES)
    set(CGAL_UNIQUE_HEADER_FILES ${CGAL_HEADER_FILES})
    set(CGAL_DUPLICATE_HEADER_FILES ${CGAL_HEADER_FILES})
    list(REMOVE_DUPLICATES CGAL_UNIQUE_HEADER_FILES)
    #message(STATUS "Headers: ${CGAL_HEADER_FILES}")
    foreach (file ${CGAL_UNIQUE_HEADER_FILES})
      list(FIND CGAL_DUPLICATE_HEADER_FILES "${file}" CGAL_FILE_IDX)
      list(REMOVE_AT CGAL_DUPLICATE_HEADER_FILES ${CGAL_FILE_IDX})
    endforeach()
    message(STATUS "Duplicate header files (will be repeated at end): ${CGAL_DUPLICATE_HEADER_FILES}")

    list(SORT CGAL_CPP_FILES)
    set(CGAL_UNIQUE_CPP_FILES ${CGAL_CPP_FILES})
    set(CGAL_DUPLICATE_CPP_FILES ${CGAL_CPP_FILES})
    list(REMOVE_DUPLICATES CGAL_UNIQUE_CPP_FILES)
    #message(STATUS "CPPs: ${CGAL_CPP_FILES}")
    foreach (file ${CGAL_UNIQUE_CPP_FILES})
      list(FIND CGAL_DUPLICATE_CPP_FILES "${file}" CGAL_FILE_IDX)
      list(REMOVE_AT CGAL_DUPLICATE_CPP_FILES ${CGAL_FILE_IDX})
    endforeach()
    message(STATUS "Duplicate cpp files (will be repeated at end): ${CGAL_DUPLICATE_CPP_FILES}")

  endif(CGAL_REPORT_DUPLICATE_FILES)

else()

  if (NOT EXISTS "${CMAKE_SOURCE_DIR}/VERSION" OR NOT EXISTS "${CMAKE_SOURCE_DIR}/include/CGAL/version.h")
    message(FATAL_ERROR "File VERSION or include/CGAL/version.h are missing, required by release-build.")
  endif()

  # 
  # Read and parse CGAL version number from VERSION file
  #

  file( READ "${CMAKE_SOURCE_DIR}/VERSION" CGAL_VERSION )
  string( REPLACE "-" "." CGAL_VERSION_TOKENS1 ${CGAL_VERSION} )
  string( REPLACE "." ";" CGAL_VERSION_TOKENS ${CGAL_VERSION_TOKENS1} )
  list( LENGTH CGAL_VERSION_TOKENS CGAL_VERSION_TOKENS_LEN )
  list( GET CGAL_VERSION_TOKENS 0 CGAL_MAJOR_VERSION )

  set(CGAL_MINOR_VERSION)
  set(CGAL_BUGFIX_VERSION)

  if ( CGAL_VERSION_TOKENS_LEN GREATER 1 )
    list( GET CGAL_VERSION_TOKENS 1 CGAL_MINOR_VERSION )
  endif()

  if ( CGAL_VERSION_TOKENS_LEN GREATER 3 )
    list( GET CGAL_VERSION_TOKENS 3 CGAL_BUGFIX_VERSION )
  elseif( CGAL_VERSION_TOKENS_LEN GREATER 2 )
    list( GET CGAL_VERSION_TOKENS 2 CGAL_BUGFIX_VERSION )
  endif()

endif()

#--------------------------------------------------------------------------------------------------
#
#                                    -= BASIC SETUP =-
#
#--------------------------------------------------------------------------------------------------

message( STATUS "CGAL_MAJOR_VERSION=${CGAL_MAJOR_VERSION}" )
message( STATUS "CGAL_MINOR_VERSION=${CGAL_MINOR_VERSION}" )
message( STATUS "CGAL_BUGFIX_VERSION=${CGAL_BUGFIX_VERSION}" )

# SONAME, SOVERSION
#
# The rule is that each new release or bug fix release should increse the soversion.
#
# SOVERSION is $(SONAME_VERSION).$(SOVERSION_MINOR).$(SOVERSION_RELEASE)
#
# - If the binary interface of libraries do not change from previous release
#   (example: most bug fix releases), increase SOVERSION_RELEASE (this third number).
# - If the binary interface is changed, but remains compatible with
#   previous release (example: only addition of new functions), then increase
#   SOVERSION_MINOR (second number) and set SOVERSION_RELEASE to 0.
# - If the binary interface is changed in an incompatible way to previous
#   release, then increase the SONAME_VERSION, and set the two other
#   numbers to 0.
# 
# SOVERSION history: 
#   CGAL<=3.5  : (unversionned)
#   CGAL-3.5   : 4.0.0
#   CGAL-3.5.1 : 4.0.1
#   CGAL-3.5   : 5.0.0
#   CGAL-3.6.1 : 5.0.0 (should have been 5.0.1)
#   CGAL-3.7  :  6.0.0 (certainly: some types have been turned from int to
#                       std::size_t, which is different on some platforms)
#   CGAL-3.8  :  7.0.0 (At least CGAL::Random has changed its member fields.)

set( CGAL_SONAME_VERSION "7"     CACHE STRING "soname-version" )
set( CGAL_SOVERSION      "7.0.0" CACHE STRING "soversion" )

mark_as_advanced(CGAL_SONAME_VERSION)
mark_as_advanced(CGAL_SOVERSION)

message( STATUS "CGAL_SONAME_VERSION=${CGAL_SONAME_VERSION}" )
message( STATUS "CGAL_SOVERSION     =${CGAL_SOVERSION}" )
set( CGAL_BUILDING_LIBS TRUE )

set( CGAL_VERSION_DIR     CGAL-${CGAL_VERSION} )
set( CGAL_MODULES_REL_DIR cmake/modules )
set( CGAL_MODULES_DIR     ${CGAL_INSTALLATION_PACKAGE_DIR}/${CGAL_MODULES_REL_DIR} )

include(${CGAL_MODULES_DIR}/CGAL_Macros.cmake)
cgal_setup_module_path()

message( STATUS "CGAL_REFERENCE_CACHE_DIR=${CGAL_REFERENCE_CACHE_DIR}" )

if ( RUNNING_CGAL_AUTO_TEST )
  message(STATUS "Operating system:")
  execute_process(COMMAND uname -a
    TIMEOUT 5
    OUTPUT_VARIABLE uname_a
    ERROR_VARIABLE uname_a)
  message(STATUS "${uname_a}")
  CGAL_display_compiler_version()
  if ( NOT "${CGAL_REFERENCE_CACHE_DIR}" STREQUAL "" )
    if ( EXISTS ${CGAL_REFERENCE_CACHE_DIR} )
      if ( EXISTS ${CGAL_REFERENCE_CACHE_DIR}/CMakeCache.txt )
        message( STATUS "Loading reference cache from ${CGAL_REFERENCE_CACHE_DIR}" )
        load_cache( ${CGAL_REFERENCE_CACHE_DIR} EXCLUDE CGAL_Core_LIBRARY )
      endif()
    endif()
  endif()
endif()

include(CGAL_Common)
include(CGAL_GeneratorSpecificSettings)
include(CGAL_CheckCXXFileRuns)

mark_as_advanced(CMAKE_BACKWARDS_COMPATIBILITY)

message( STATUS "USING CMake version: ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}.${CMAKE_PATCH_VERSION}" )
message( STATUS "System: ${CMAKE_SYSTEM_NAME}" )

#--------------------------------------------------------------------------------------------------
#
#                                    -= FLAGS =-
#
#--------------------------------------------------------------------------------------------------

if( MSVC )
  
  uniquely_add_flags ( CGAL_CXX_FLAGS "-D_CRT_SECURE_NO_DEPRECATE;-D_SCL_SECURE_NO_DEPRECATE;-D_CRT_SECURE_NO_WARNINGS;-D_SCL_SECURE_NO_WARNINGS" )
  uniquely_add_flags ( CGAL_CXX_FLAGS "/fp:strict" )
  uniquely_add_flags ( CGAL_CXX_FLAGS "/fp:except-" )

  if ( RUNNING_CGAL_AUTO_TEST )
    set(CMAKE_CXX_WARNING_LEVEL 2 CACHE STRING "MSVC C++ compiler warning level" FORCE)
    mark_as_advanced(CMAKE_CXX_WARNING_LEVEL)
  endif()
    
endif()

if( "${CMAKE_CXX_COMPILER_ID}" MATCHES SunPro )
  message( STATUS "Using SunPro compiler, using STLPort 4." )
  
  uniquely_add_flags( CGAL_CXX_FLAGS "-features=extensions;-library=stlport4;-D_GNU_SOURCE" )
  uniquely_add_flags( CGAL_SHARED_LINKER_FLAGS "-library=stlport4" )
  uniquely_add_flags( CGAL_EXE_LINKER_FLAGS    "-library=stlport4" )
endif()

if( "${CMAKE_CXX_COMPILER}" MATCHES "icl" OR "${CMAKE_CXX_COMPILER}" MATCHES "icpc")
  message( STATUS "Intel compiler is detected." )
  set( IntelCompiler_FOUND TRUE )

  get_dependency_version(IntelCompiler)

  if( "${IntelCompiler_VERSION}" LESS "1100" )
    message("Intel Compiler version ${IntelCompiler_VERSION} is not supported by CGAL-${CGAL_MAJOR_VERSION}.${CGAL_MINOR_VERSION}! (too old, must be 11.0 or after)")
  else()
    message( STATUS "Using Intel Compiler version 11 or later. Adding -fp-model strict" )
    if(WIN32)
      uniquely_add_flags( CGAL_CXX_FLAGS "/fp:strict" )
    else()
      uniquely_add_flags( CGAL_CXX_FLAGS "-fp-model strict" )
    endif()
  endif()
endif()


if ( CMAKE_COMPILER_IS_GNUCXX )

  set( GCC_FOUND TRUE )
  
  get_dependency_version(GCC)
  
  if ( "${GCC_VERSION}" MATCHES "Not" OR "${GCC_VERSION}" MATCHES "Unknown" )
    set( GCC_FOUND FALSE )
  endif()
  
  if ( GCC_FOUND )
  
    if ( RUNNING_CGAL_AUTO_TEST )
      uniquely_add_flags( CGAL_CXX_FLAGS "-Wall" )
    endif()
    
    if ( "${GCC_VERSION}" MATCHES "^4." )
      message( STATUS "Using gcc version 4 or later. Adding -frounding-math" )
      uniquely_add_flags( CGAL_CXX_FLAGS "-frounding-math" )
    endif()
    
    if ( "${GCC_VERSION}" MATCHES "^4.2" )
      message( STATUS "Using gcc version 4.2. Adding -fno-strict-aliasing" )
      uniquely_add_flags( CGAL_CXX_FLAGS "-fno-strict-aliasing" )
    endif()
    
    if ( "${CMAKE_SYSTEM_PROCESSOR}" MATCHES "alpha" )
      message( STATUS "Using gcc on alpha. Adding -mieee -mfp-rounding-mode=d" )
      uniquely_add_flags( CGAL_CXX_FLAGS "-mieee -mfp-rounding-mode=d" )
    endif()
    
  endif()
  
endif()

include(CGAL_SetupFlags)

#--------------------------------------------------------------------------------------------------
#
#                                    -= DEPENDENCIES =-
#
#--------------------------------------------------------------------------------------------------

#
# The following variables are in the cache just so subdirectories can set them persistently.
# But they are not intended to persist from run to run as normal cache variables.
# Similar variables are created when a library is detected.
#
cache_set(CGAL_3RD_PARTY_DEFINITIONS    "" )
cache_set(CGAL_3RD_PARTY_INCLUDE_DIRS   "" )
cache_set(CGAL_3RD_PARTY_LIBRARIES      "" )
cache_set(CGAL_3RD_PARTY_LIBRARIES_DIRS "" ) 

include(CGAL_SetupDependencies)

#--------------------------------------------------------------------------------------------------
#
#                                    -= Generation of compiler_config.h =-
#
#--------------------------------------------------------------------------------------------------

# The variables set are the #defines expected by compiler_config.h
# Note: CMake will not notice when files are added or removed
# but this is probably OK for the installation procedure.

file(GLOB all_config_tests "${CGAL_INSTALLATION_PACKAGE_DIR}/config/testfiles/*.cpp")

list( SORT all_config_tests )

file( WRITE ${CMAKE_BINARY_DIR}/include/CGAL/compiler_config.h "//\n// compiler_config.h is included by CGAL headers to load the needed compiler settings.\n//\n// DO NOT EDIT compiler_config.h. It is generated by CMake.\n//\n\n")

macro( add_config_flag flag )

    if ( ${flag} )
      file( APPEND ${CMAKE_BINARY_DIR}/include/CGAL/compiler_config.h "#define ${flag} 1\n\n")
    else()
      file( APPEND ${CMAKE_BINARY_DIR}/include/CGAL/compiler_config.h "//#define ${flag} 1\n\n")
    endif()

endmacro()

foreach(config_test_cpp ${all_config_tests})
    
    # Test's name is .cpp's base name
    get_filename_component(config_test_name ${config_test_cpp} NAME_WE)
    
    # Compile and run ${config_test_cpp}. Exit code is stored in ${config_test_name}.
    if( RUNNING_CGAL_AUTO_TEST OR "${config_test_name}" MATCHES "^${config_test_name}$" )

      CHECK_CXX_FILE_RUNS(${config_test_cpp} ${config_test_name} ${config_test_name})

      if ( ${config_test_name} )
        cache_set ( ${config_test_name} 0 )
      else()
        cache_set ( ${config_test_name} 1 )
      endif()  
      
    endif()
    
    add_config_flag( ${config_test_name} ${config_test_name} )
    
endforeach()

add_config_flag( CGAL_USE_GMP )
add_config_flag( CGAL_USE_MPFR )
add_config_flag( CGAL_USE_GMPXX )
add_config_flag( CGAL_USE_LEDA )
add_config_flag( CGAL_USE_MPFI )
add_config_flag( CGAL_USE_RS )
add_config_flag( CGAL_USE_NTL )

set(CGAL_USE_CORE ${CGAL_USE_GMP})

add_config_flag( CGAL_USE_CORE )

if ( RUNNING_CGAL_AUTO_TEST AND MSVC )
  file( APPEND "${CMAKE_BINARY_DIR}/include/CGAL/compiler_config.h" "#include <CGAL/Testsuite/vc_debug_hook.h>\n\n" )
endif()

#--------------------------------------------------------------------------------------------------
#
#                                    -= Installation Setup =-
#
#--------------------------------------------------------------------------------------------------

set ( CGAL_INSTALL_INC_DIR "include" CACHE STRING "The folder where CGAL header files will be installed, relative to CMAKE_INSTALL_PREFIX" )
set ( CGAL_INSTALL_LIB_DIR "lib"     CACHE STRING "The folder where CGAL libraries will be installed, relative to CMAKE_INSTALL_PREFIX" )

if ( CGAL_WIN32_CMAKE_ON_CYGWIN )
  exec_program(cygpath ARGS -w "${CMAKE_INSTALL_PREFIX}" OUTPUT_VARIABLE CMAKE_INSTALL_PREFIX2 )
  file ( TO_CMAKE_PATH ${CMAKE_INSTALL_PREFIX2} CMAKE_INSTALL_PREFIX )
endif()

set ( CGAL_INSTALL_BIN_DIR    "bin"                     
  CACHE STRING "The folder where CGAL user-side scripts will be installed, relative to CMAKE_INSTALL_PREFIX" 
  )

set ( CGAL_INSTALL_CMAKE_DIR "${CGAL_INSTALL_LIB_DIR}/CGAL"
  CACHE STRING "The folder where CGAL CMake modules will be installed, relative to CMAKE_INSTALL_PREFIX" 
  )

set ( CGAL_INSTALL_DOC_DIR "share/doc/${CGAL_VERSION_DIR}"  
  CACHE STRING "The folder where CGAL documentation and license files will be installed, relative to CMAKE_INSTALL_PREFIX" 
  )

set ( CGAL_INSTALL_MAN_DIR "share/man/man1"  
  CACHE STRING "The folder where manual pages for CGAL scripts will be installed, relative to CMAKE_INSTALL_PREFIX" 
  )

#--------------------------------------------------------------------------------------------------
#
#                                    -= Build =-
#
#--------------------------------------------------------------------------------------------------

set(CGAL_LIBRARIES_DIR ${CMAKE_BINARY_DIR}/lib)

set(LIBRARY_OUTPUT_PATH ${CGAL_LIBRARIES_DIR})

set(CGAL_INCLUDE_DIRS ${CMAKE_BINARY_DIR}/include)

foreach (package ${CGAL_CONFIGURED_PACKAGES})
  set(CGAL_INCLUDE_DIRS ${CGAL_INCLUDE_DIRS} ${package}/include)
endforeach()

include_directories (${CGAL_INCLUDE_DIRS})

add_subdirectory(src)

cache_get(CGAL_LIBRARY)
cache_get(CGAL_3RD_PARTY_DEFINITIONS   )
cache_get(CGAL_3RD_PARTY_INCLUDE_DIRS  )
cache_get(CGAL_3RD_PARTY_LIBRARIES     )
cache_get(CGAL_3RD_PARTY_LIBRARIES_DIRS) 

hide_variable(EXECUTABLE_OUTPUT_PATH)
hide_variable(LIBRARY_OUTPUT_PATH)


#
# Repeat some problems
#

if (CGAL_BRANCH_BUILD AND CGAL_REPORT_DUPLICATE_FILES )

 if (CGAL_DUPLICATE_HEADER_FILES)
    message(WARNING "WARNING: Duplicate header files")
    foreach(hfile ${CGAL_DUPLICATE_HEADER_FILES})
      message(STATUS "  File '${hfile}' multiply found in ")
      foreach (package ${CGAL_CONFIGURED_PACKAGES})
        file(GLOB_RECURSE CGAL_PACKAGE_HEADER_FILES FOLLOW_SYMLINKS ${package}/*.h)
        foreach (file ${CGAL_PACKAGE_HEADER_FILES})
          string(REPLACE "${package}/" "" pure_file ${file})
          if ("${pure_file}" STREQUAL "${hfile}")
            message(STATUS "    ${package}")
          endif()
        endforeach()
      endforeach()
    endforeach()
  endif()

  if (CGAL_DUPLICATE_CPP_FILES)
    message(WARNING "WARNING: Duplicate cpp files")
    foreach(cfile ${CGAL_DUPLICATE_CPP_FILES})
      message(STATUS "  File '${cfile}' multiply found in ")
      foreach (package ${CGAL_CONFIGURED_PACKAGES})
        file(GLOB_RECURSE CGAL_PACKAGE_CPP_FILES FOLLOW_SYMLINKS ${package}/*.cpp)
        foreach (file ${CGAL_PACKAGE_CPP_FILES})
          string(REPLACE "${package}/" "" pure_file ${file})
          if ("${pure_file}" STREQUAL "${cfile}")
            message(STATUS "    ${package}")
          endif()
        endforeach()
      endforeach()
    endforeach()
  endif()

endif()

#--------------------------------------------------------------------------------------------------
#
#                                    -= USER SIDE SETTINGS =-
#
#--------------------------------------------------------------------------------------------------

# Set CGAL_LIBRARY_NAME, CGAL_Qt3_LIBRARY_NAME and so on. Those variables
# are the name of CGAL libraries, without the path. Used in the generation
# of the installed CGALConfig.cmake
get_filename_component(CGAL_LIBRARY_NAME "${CGAL_LIBRARY}" NAME CACHE)
hide_variable(CGAL_LIBRARY_NAME)
foreach(lib ${CGAL_CONFIGURED_LIBRARIES})
  get_filename_component(CGAL_${lib}_LIBRARY_NAME "${CGAL_${lib}_LIBRARY}" NAME CACHE)
  hide_variable(CGAL_${lib}_LIBRARY_NAME)
endforeach()

# fake to simplify loop
set(CGAL_CGAL_LIBRARY ${CGAL_LIBRARY})
hide_variable(CGAL_CGAL_LIBRARY)
set(CGAL_CGAL_LIBRARY_NAME ${CGAL_LIBRARY_NAME})
hide_variable(CGAL_CGAL_LIBRARY_NAME)

create_CGALconfig_files()

#--------------------------------------------------------------------------------------------------
#
#                                    -= Installation Commands =-
#
#--------------------------------------------------------------------------------------------------

# DESTINATION option is mandatory; skipping it breaks CPack!

if(CGAL_INSTALL_DOC_DIR)
  install(FILES AUTHORS CHANGES LICENSE LICENSE.FREE_USE LICENSE.LGPL LICENSE.QPL DESTINATION ${CGAL_INSTALL_DOC_DIR} )
endif()

#install all includes collected in trunk et cetera


foreach (dir ${CGAL_CONFIGURED_PACKAGES})
  if (EXISTS ${dir}/include/CGAL) 
    install(DIRECTORY ${dir}/include/CGAL              DESTINATION ${CGAL_INSTALL_INC_DIR} PATTERN ".svn" EXCLUDE)
  endif()
endforeach()
install(DIRECTORY ${CMAKE_BINARY_DIR}/include/CGAL     DESTINATION ${CGAL_INSTALL_INC_DIR} PATTERN ".svn" EXCLUDE)

file(GLOB scripts "scripts/*")
install(PROGRAMS ${scripts} DESTINATION ${CGAL_INSTALL_BIN_DIR})

install(DIRECTORY ${CGAL_MODULES_REL_DIR}/                DESTINATION ${CGAL_INSTALL_CMAKE_DIR} )
install(FILES     ${CGAL_MODULES_REL_DIR}/UseCGAL.cmake   DESTINATION ${CGAL_INSTALL_CMAKE_DIR} )


if ( GMP_IN_AUXILIARY )
  install(DIRECTORY auxiliary/gmp/include/ DESTINATION ${CGAL_INSTALL_INC_DIR} )
  install(DIRECTORY auxiliary/gmp/lib/     DESTINATION ${CGAL_INSTALL_LIB_DIR} )
endif()

if ( TAUCS_IN_AUXILIARY )
  install(DIRECTORY auxiliary/taucs/include/ DESTINATION ${CGAL_INSTALL_INC_DIR} )
  install(DIRECTORY auxiliary/taucs/lib/     DESTINATION ${CGAL_INSTALL_LIB_DIR} )
endif()

if ( ZLIB_IN_AUXILIARY )
  install(DIRECTORY auxiliary/zlib/include/ DESTINATION ${CGAL_INSTALL_INC_DIR} )
  install(DIRECTORY auxiliary/zlib/lib/     DESTINATION ${CGAL_INSTALL_LIB_DIR} )
endif()


install(FILES ${CMAKE_BINARY_DIR}/config/CGALConfig.cmake DESTINATION ${CGAL_INSTALL_CMAKE_DIR} )

if(CGAL_INSTALL_MAN_DIR)
  install(FILES auxiliary/cgal_create_cmake_script.1 DESTINATION ${CGAL_INSTALL_MAN_DIR} )
endif()

#--------------------------------------------------------------------------------------------------
#
#              -= Special installation commands to copy FindCGAL to the cmake directory =-
#
#--------------------------------------------------------------------------------------------------

# Installing FindCGAL into cmake itself is implemented as a custom target
# because it requires superuser privileges

if ( NOT "${CMAKE_ROOT}" STREQUAL "" )
  if ( EXISTS ${CMAKE_ROOT}/Modules )
    add_custom_target( install_FindCGAL
                      COMMAND ${CMAKE_COMMAND} -E copy ${CGAL_MODULES_DIR}/FindCGAL.cmake ${CMAKE_ROOT}/Modules
                    ) 
  endif()
endif()  

#--------------------------------------------------------------------------------------------------
#
#                                    -= APPLICATIONS =-
#
#--------------------------------------------------------------------------------------------------

macro( add_programs subdir target ON_OFF )

  cache_set( CGAL_EXECUTABLE_TARGETS "" )
  
  add_custom_target( ${target} )
  
  option( WITH_${target} "Select ${target}" ${ON_OFF} )
  if ( WITH_${target} )
    add_subdirectory( ${subdir} EXCLUDE_FROM_ALL )
  endif()
  
  cache_get( CGAL_EXECUTABLE_TARGETS )
  
  foreach( CGAL_EXECUTABLE_TARGET ${CGAL_EXECUTABLE_TARGETS} )
    add_dependencies( ${target} ${CGAL_EXECUTABLE_TARGET} )
  endforeach()
     
endmacro()

# This allows programs to locate CGALConfig.cmake
set(CGAL_DIR ${CMAKE_BINARY_DIR} )

if ( NOT RUNNING_CGAL_AUTO_TEST )

  add_programs(examples examples OFF )
  add_programs(demo     demos    OFF )
  
endif()

#--------------------------------------------------------------------------------------------------
#
#                                            -= CPack =-
#
#--------------------------------------------------------------------------------------------------

#option( WITH_CPACK "Create package generation rules")
if( WITH_CPACK AND EXISTS "${CMAKE_ROOT}/Modules/CPack.cmake" )

    set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "CGAL - Computational Geometry Algorithms Library")
    set(CPACK_PACKAGE_VENDOR "CGAL Open Source Project")
    set(CPACK_PACKAGE_DESCRIPTION_FILE "${CGAL_INSTALLATION_PACKAGE_DIR}/README")
    set(CPACK_RESOURCE_FILE_LICENSE "${CGAL_INSTALLATION_PACKAGE_DIR}/LICENSE")
    set(CPACK_PACKAGE_VERSION_MAJOR "${CGAL_MAJOR_VERSION}")
    set(CPACK_PACKAGE_VERSION_MINOR "${CGAL_MINOR_VERSION}")
    set(CPACK_PACKAGE_VERSION_PATCH "${CGAL_BUGFIX_VERSION}")
    set(CPACK_PACKAGE_INSTALL_DIRECTORY "CGAL ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}")
    set(CPACK_SOURCE_PACKAGE_FILE_NAME "CGAL-${CGAL_VERSION}")
    set(CPACK_RESOURCE_FILE_LICENSE "${CGAL_INSTALLATION_PACKAGE_DIR}/LICENSE")
    
    if(NOT DEFINED CPACK_SYSTEM_NAME)
      set(CPACK_SYSTEM_NAME ${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR})
    endif()
    
    if(${CPACK_SYSTEM_NAME} MATCHES Windows)
      if(CMAKE_CL_64)
        set(CPACK_SYSTEM_NAME win64-${CMAKE_SYSTEM_PROCESSOR})
      else()
        set(CPACK_SYSTEM_NAME win32-${CMAKE_SYSTEM_PROCESSOR})
      endif()
    endif()
    
    if(NOT DEFINED CPACK_PACKAGE_FILE_NAME)
      set(CPACK_PACKAGE_FILE_NAME "${CPACK_SOURCE_PACKAGE_FILE_NAME}-${CPACK_SYSTEM_NAME}")
    endif()
    
    set(CPACK_PACKAGE_EXECUTABLES "CGAL" "CGAL")

    if(WIN32 AND NOT UNIX)
        set(CPACK_GENERATOR "NSIS")
        # There is a bug in NSI that does not handle full unix paths properly. Make
        # sure there is at least one set of four (4) backlasshes.
        #set(CPACK_PACKAGE_ICON "${CGAL_INSTALLATION_PACKAGE_DIR}\\\\cgal_install.gif")
        #set(CPACK_NSIS_INSTALLED_ICON_NAME "bin\\\\CGAL.exe")
        set(CPACK_NSIS_DISPLAY_NAME "${CPACK_PACKAGE_INSTALL_DIRECTORY} Computational Geometry Algorithms Library")
        set(CPACK_NSIS_HELP_LINK "http:\\\\\\\\www.cgal.org")
        set(CPACK_NSIS_URL_INFO_ABOUT "http:\\\\\\\\www.cgal.org")
        set(CPACK_NSIS_CONTACT "info@cgal.org")
        set(CPACK_NSIS_MODIfY_PATH ON)
    else()
        set(CPACK_STRIP_FILES "")
        set(CPACK_SOURCE_STRIP_FILES "")
    endif()

    include(CPack)
    
endif()