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CMake: Set at most one SSL library

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Ref: https://github.com/curl/curl/pull/1228
This commit is contained in:
Michael Maltese 2017-02-20 16:33:53 -08:00 • committed by Peter Wu
parent c6a97466b9
commit 813263dc3a
3 changed files with 31 additions and 7 deletions
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13
CMake/Utilities.cmake
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@ -29,3 +29,16 @@ function(IN_STR_LIST LIST_NAME ITEM_SEARCHED RETVAL)
set(${RETVAL} TRUE PARENT_SCOPE)
endif()
endfunction()
# Returns a list of arguments that evaluate to true
function(collect_true output_var output_count_var)
set(${output_var})
foreach(option_var IN LISTS ARGN)
if(${option_var})
list(APPEND ${output_var} ${option_var})
endif()
endforeach()
set(${output_var} ${${output_var}} PARENT_SCOPE)
list(LENGTH ${output_var} ${output_count_var})
set(${output_count_var} ${${output_count_var}} PARENT_SCOPE)
endfunction()