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xgboost/dmlc-core/cmake/Utils.cmake  view on Meta::CPAN

################################################################################################
# Helper function get current definitions
# Usage:
#   dmlccore_get_current_definitions(<definitions_variable>)
function(dmlccore_get_current_definitions definitions_var)
  get_property(current_definitions DIRECTORY PROPERTY COMPILE_DEFINITIONS)
  set(result "")

  foreach(d ${current_definitions})
    list(APPEND result -D${d})
  endforeach()

  dmlccore_list_unique(result)
  set(${definitions_var} ${result} PARENT_SCOPE)
endfunction()

################################################################################################
# Helper function get current includes/definitions
# Usage:
#   dmlccore_get_current_cflags(<cflagslist_variable>)
function(dmlccore_get_current_cflags cflags_var)
  get_property(current_includes DIRECTORY PROPERTY INCLUDE_DIRECTORIES)
  dmlccore_convert_absolute_paths(current_includes)
  dmlccore_get_current_definitions(cflags)

  foreach(i ${current_includes})
    list(APPEND cflags "-I${i}")
  endforeach()

  dmlccore_list_unique(cflags)
  set(${cflags_var} ${cflags} PARENT_SCOPE)
endfunction()

################################################################################################
# Helper function to parse current linker libs into link directories, libflags and osx frameworks
# Usage:
#   dmlccore_parse_linker_libs(<dmlccore_LINKER_LIBS_var> <directories_var> <libflags_var> <frameworks_var>)
function(dmlccore_parse_linker_libs dmlccore_LINKER_LIBS_variable folders_var flags_var frameworks_var)

  set(__unspec "")
  set(__debug "")
  set(__optimized "")
  set(__framework "")
  set(__varname "__unspec")

  # split libs into debug, optimized, unspecified and frameworks
  foreach(list_elem ${${dmlccore_LINKER_LIBS_variable}})
    if(list_elem STREQUAL "debug")
      set(__varname "__debug")
    elseif(list_elem STREQUAL "optimized")
      set(__varname "__optimized")
    elseif(list_elem MATCHES "^-framework[ \t]+([^ \t].*)")
      list(APPEND __framework -framework ${CMAKE_MATCH_1})
    else()
      list(APPEND ${__varname} ${list_elem})
      set(__varname "__unspec")
    endif()
  endforeach()

  # attach debug or optimized libs to unspecified according to current configuration
  if(CMAKE_BUILD_TYPE MATCHES "Debug")
    set(__libs ${__unspec} ${__debug})
  else()
    set(__libs ${__unspec} ${__optimized})
  endif()

  set(libflags "")
  set(folders "")

  # convert linker libraries list to link flags
  foreach(lib ${__libs})
    if(TARGET ${lib})
      list(APPEND folders $<TARGET_LINKER_FILE_DIR:${lib}>)
      list(APPEND libflags -l${lib})
    elseif(lib MATCHES "^-l.*")
      list(APPEND libflags ${lib})
    elseif(IS_ABSOLUTE ${lib})
      get_filename_component(name_we ${lib} NAME_WE)
      get_filename_component(folder  ${lib} PATH)

      string(REGEX MATCH "^lib(.*)" __match ${name_we})
      list(APPEND libflags -l${CMAKE_MATCH_1})
      list(APPEND folders    ${folder})
    else()
      message(FATAL_ERROR "Logic error. Need to update cmake script")
    endif()
  endforeach()

  dmlccore_list_unique(libflags folders)

  set(${folders_var} ${folders} PARENT_SCOPE)
  set(${flags_var} ${libflags} PARENT_SCOPE)
  set(${frameworks_var} ${__framework} PARENT_SCOPE)
endfunction()

################################################################################################
# Helper function to detect Darwin version, i.e. 10.8, 10.9, 10.10, ....
# Usage:
#   dmlccore_detect_darwin_version(<version_variable>)
function(dmlccore_detect_darwin_version output_var)
  if(APPLE)
    execute_process(COMMAND /usr/bin/sw_vers -productVersion
                    RESULT_VARIABLE __sw_vers OUTPUT_VARIABLE __sw_vers_out
                    ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE)

    set(${output_var} ${__sw_vers_out} PARENT_SCOPE)
  else()
    set(${output_var} "" PARENT_SCOPE)
  endif()
endfunction()