File: module_switch.cmake

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#############################################################################
# Copyright (c) 2019 Balabit
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
# As an additional exemption you are allowed to compile & link against the
# OpenSSL libraries as published by the OpenSSL project. See the file
# COPYING for details.
#
#############################################################################

option(DISABLE_ALL_MODULES "disable all switchable modules by default" "OFF")

function (module_switch NAME HELP_STRING)
  if (DEFINED ${NAME})
    return()
  endif()

  if (DISABLE_ALL_MODULES)
    option(${NAME} ${HELP_STRING} "OFF")
    return ()
  endif()

  foreach (symbol ${ARGN})
    if (NOT ${symbol})
      option(${NAME} "${HELP_STRING}" "OFF")
      return()
    endif()
  endforeach()

  option(${NAME} "${HELP_STRING}" "ON")
endfunction ()