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curl

#***************************************************************************
#                                  _   _ ____  _
#  Project                     ___| | | |  _ \| |
#                             / __| | | | |_) | |
#                            | (__| |_| |  _ <| |___
#                             \___|\___/|_| \_\_____|
#
# Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.haxx.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
###########################################################################
# File containing various utilities

# Returns a list of arguments that evaluate to true
function(count_true output_count_var)
  set(lst_len 0)
  foreach(option_var IN LISTS ARGN)
    if(${option_var})
      math(EXPR lst_len "${lst_len} + 1")
    endif()
  endforeach()
  set(${output_count_var} ${lst_len} PARENT_SCOPE)
endfunction()