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CMake: Issue a warning if build option requirements are not met

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Dennis Klein
2019-08-21 11:58:10 +02:00
committed by Dennis Klein
parent 7a0d348bd4
commit 1055f035ff
2 changed files with 58 additions and 11 deletions
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38
cmake/FairMQLib.cmake
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@@ -480,3 +480,41 @@ function(build_bundled package bundle)
message(STATUS "Building bundled ${package} - done")
endfunction()
macro(fairmq_build_option option description)
cmake_parse_arguments(ARGS "" "DEFAULT;REQUIRES" "" ${ARGN})
if(ARGS_DEFAULT)
set(__default__ ON)
else()
set(__default__ OFF)
endif()
if(ARGS_REQUIRES)
include(CMakeDependentOption)
set(__requires__ ${ARGS_REQUIRES})
string(REGEX REPLACE " +" ";" __requires_condition__ "${__requires__}")
if(${__requires_condition__})
else()
if(${option})
message(WARNING "Cannot enable build option ${option}, depending options are not set: ${__requires_condition__}.")
endif()
endif()
else()
set(__requires__)
endif()
if(__requires__)
cmake_dependent_option(${option} ${description} ${__default__} ${__requires__} OFF)
else()
option(${option} ${description} ${__default__})
endif()
set(__default__)
set(__requires__)
set(__requires_condition__)
set(ARGS_DEFAULT)
set(ARGS_REQUIRES)
set(option)
set(description)
endmacro()