a9c379199d
This amends4f1a155909and37b154858fwhich caused the regeneration of some json features to be internal. Some of those features were not evaluated any more unless they were referenced in another feature. Make sure to explicitly evaluate all internal features as well. Change-Id: I4367f309585fe29dc89d8a6b793de381956ae51d Reviewed-by: Simon Hausmann <simon.hausmann@qt.io> Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>
489 lines
18 KiB
CMake
489 lines
18 KiB
CMake
function(qt_feature_module_begin)
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qt_parse_all_arguments(arg "qt_feature_module_begin"
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"NO_MODULE" "LIBRARY;PRIVATE_FILE;PUBLIC_FILE" "PUBLIC_DEPENDENCIES;PRIVATE_DEPENDENCIES" ${ARGN})
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if ("${arg_LIBRARY}" STREQUAL "" AND (NOT ${arg_NO_MODULE}))
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message(FATAL_ERROR "qt_feature_begin_module needs a LIBRARY name! (or specify NO_MODULE)")
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endif()
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if ("${arg_PUBLIC_FILE}" STREQUAL "")
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message(FATAL_ERROR "qt_feature_begin_module needs a PUBLIC_FILE name!")
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endif()
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if ("${arg_PRIVATE_FILE}" STREQUAL "")
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message(FATAL_ERROR "qt_feature_begin_module needs a PRIVATE_FILE name!")
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endif()
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set(__QtFeature_library "${arg_LIBRARY}" PARENT_SCOPE)
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set(__QtFeature_public_features "" PARENT_SCOPE)
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set(__QtFeature_private_features "" PARENT_SCOPE)
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set(__QtFeature_internal_features "" PARENT_SCOPE)
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set(__QtFeature_private_file "${arg_PRIVATE_FILE}" PARENT_SCOPE)
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set(__QtFeature_public_file "${arg_PUBLIC_FILE}" PARENT_SCOPE)
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set(__QtFeature_private_extra "" PARENT_SCOPE)
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set(__QtFeature_public_extra "" PARENT_SCOPE)
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set(__QtFeature_define_definitions "" PARENT_SCOPE)
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endfunction()
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function(qt_feature feature)
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qt_parse_all_arguments(arg "qt_feature"
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"PRIVATE;PUBLIC"
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"LABEL;PURPOSE;SECTION;" "AUTODETECT;CONDITION;ENABLE;DISABLE;EMIT_IF" ${ARGN})
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set(_QT_FEATURE_DEFINITION_${feature} ${ARGN} PARENT_SCOPE)
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# Register feature for future use:
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if (arg_PUBLIC)
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list(APPEND __QtFeature_public_features "${feature}")
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endif()
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if (arg_PRIVATE)
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list(APPEND __QtFeature_private_features "${feature}")
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endif()
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if (NOT arg_PUBLIC AND NOT arg_PRIVATE)
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list(APPEND __QtFeature_internal_features "${feature}")
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endif()
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set(__QtFeature_public_features ${__QtFeature_public_features} PARENT_SCOPE)
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set(__QtFeature_private_features ${__QtFeature_private_features} PARENT_SCOPE)
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set(__QtFeature_internal_features ${__QtFeature_internal_features} PARENT_SCOPE)
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endfunction()
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function(qt_evaluate_to_boolean expressionVar)
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if(${${expressionVar}})
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set(${expressionVar} ON PARENT_SCOPE)
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else()
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set(${expressionVar} OFF PARENT_SCOPE)
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endif()
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endfunction()
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function(qt_evaluate_config_expression resultVar)
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set(result "")
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set(nestingLevel 0)
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set(skipNext OFF)
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set(expression "${ARGN}")
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list(LENGTH expression length)
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math(EXPR length "${length}-1")
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foreach(memberIdx RANGE ${length})
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if(${skipNext})
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set(skipNext OFF)
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continue()
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endif()
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list(GET expression ${memberIdx} member)
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if("${member}" STREQUAL "(")
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if(${nestingLevel} GREATER 0)
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list(APPEND result ${member})
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endif()
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math(EXPR nestingLevel "${nestingLevel} + 1")
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continue()
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elseif("${member}" STREQUAL ")")
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math(EXPR nestingLevel "${nestingLevel} - 1")
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if(nestingLevel LESS 0)
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break()
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endif()
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if(${nestingLevel} EQUAL 0)
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qt_evaluate_config_expression(result ${result})
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else()
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list(APPEND result ${member})
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endif()
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continue()
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elseif(${nestingLevel} GREATER 0)
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list(APPEND result ${member})
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continue()
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elseif("${member}" STREQUAL "NOT")
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list(APPEND result ${member})
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continue()
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elseif("${member}" STREQUAL "AND")
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qt_evaluate_to_boolean(result)
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if(NOT ${result})
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break()
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endif()
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set(result "")
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elseif("${member}" STREQUAL "OR")
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qt_evaluate_to_boolean(result)
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if(${result})
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break()
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endif()
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set(result "")
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elseif("${member}" STREQUAL "STREQUAL" AND memberIdx LESS ${length})
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# Unfortunately the semantics for STREQUAL in if() are broken when the
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# RHS is an empty string and the parameters to if are coming through a variable.
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# So we expect people to write the empty string with single quotes and then we
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# do the comparison manually here.
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list(LENGTH result lhsIndex)
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math(EXPR lhsIndex "${lhsIndex}-1")
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list(GET result ${lhsIndex} lhs)
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list(REMOVE_AT result ${lhsIndex})
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set(lhs "${${lhs}}")
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math(EXPR rhsIndex "${memberIdx}+1")
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set(skipNext ON)
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list(GET expression ${rhsIndex} rhs)
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# We can't pass through an empty string with double quotes through various
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# stages of substitution, so instead it is represented using single quotes
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# and resolve here.
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string(REGEX REPLACE "'(.*)'" "\\1" rhs "${rhs}")
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string(COMPARE EQUAL "${lhs}" "${rhs}" stringCompareResult)
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list(APPEND result ${stringCompareResult})
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else()
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string(FIND "${member}" "QT_FEATURE_" idx)
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if(idx EQUAL 0)
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# Remove the QT_FEATURE_ prefix
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string(SUBSTRING "${member}" 11 -1 feature)
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qt_evaluate_feature(${feature})
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endif()
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list(APPEND result ${member})
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endif()
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endforeach()
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if("${result}" STREQUAL "")
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set(result ON)
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else()
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qt_evaluate_to_boolean(result)
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endif()
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set(${resultVar} ${result} PARENT_SCOPE)
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endfunction()
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function(qt_feature_set_cache_value resultVar feature emit_if calculated label)
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if (DEFINED "FEATURE_${feature}")
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# Must set up the cache
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if (NOT (emit_if))
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message(FATAL_ERROR "Sanity check failed: FEATURE_${feature} that was not emitted was found in the CMakeCache.")
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endif()
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# Revisit value:
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set(cache "${FEATURE_${feature}}")
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if ((cache STREQUAL "ON") OR (cache STREQUAL "OFF"))
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set(result "${cache}")
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else()
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message(FATAL_ERROR "Sanity check failed: FEATURE_${feature} has invalid value \"${cache}\"!")
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endif()
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# Fix-up user-provided values
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set("FEATURE_${feature}" "${cache}" CACHE BOOL "${label}")
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else()
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# Initial setup:
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if (emit_if)
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set("FEATURE_${feature}" "${calculated}" CACHE BOOL "${label}")
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set(result "${calculated}")
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else()
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set(result OFF)
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endif()
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endif()
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set("${resultVar}" "${result}" PARENT_SCOPE)
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endfunction()
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macro(qt_feature_set_value feature cache emit_if condition label)
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set(result "${cache}")
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if (NOT (condition) AND (cache))
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message(SEND_ERROR "Feature \"${feature}\": Forcing to \"${cache}\" breaks its condition.")
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endif()
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if (DEFINED "QT_FEATURE_${feature}")
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message(FATAL_ERROR "Feature ${feature} is already defined when evaluating configure.cmake features for ${target}.")
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endif()
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set(QT_FEATURE_${feature} "${result}" CACHE INTERNAL "Qt feature: ${feature}")
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endmacro()
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function(qt_evaluate_feature feature)
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# If the feature was set explicitly by the user to be on or off, in the cache, then
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# there's nothing for us to do.
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if(DEFINED "QT_FEATURE_${feature}")
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return()
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endif()
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if(NOT DEFINED _QT_FEATURE_DEFINITION_${feature})
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qt_debug_print_variables(DEDUP MATCH "^QT_FEATURE")
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message(FATAL_ERROR "Attempting to evaluate feature ${feature} but its definition is missing. Either the feature does not exist or a dependency to the module that defines it is missing")
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endif()
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cmake_parse_arguments(arg
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"PRIVATE;PUBLIC"
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"LABEL;PURPOSE;SECTION;" "AUTODETECT;CONDITION;ENABLE;DISABLE;EMIT_IF" ${_QT_FEATURE_DEFINITION_${feature}})
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if(DEFINED QT_FEATURE_${feature})
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return()
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endif()
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if("${arg_ENABLE}" STREQUAL "")
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set(arg_ENABLE OFF)
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endif()
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if("${arg_DISABLE}" STREQUAL "")
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set(arg_DISABLE OFF)
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endif()
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if("${arg_AUTODETECT}" STREQUAL "")
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set(arg_AUTODETECT ON)
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endif()
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if("${arg_CONDITION}" STREQUAL "")
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set(condition ON)
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else()
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qt_evaluate_config_expression(condition ${arg_CONDITION})
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endif()
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qt_evaluate_config_expression(disable_result ${arg_DISABLE})
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qt_evaluate_config_expression(enable_result ${arg_ENABLE})
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if(${disable_result})
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set(result OFF)
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elseif((${enable_result}) OR (${arg_AUTODETECT}))
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set(result ${condition})
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else()
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# feature not auto-detected and not explicitly enabled
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set(result OFF)
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endif()
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if("${arg_EMIT_IF}" STREQUAL "")
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set(emit_if ON)
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else()
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qt_evaluate_config_expression(emit_if ${arg_EMIT_IF})
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endif()
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if (NOT (condition) AND (calculated))
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message(FATAL_ERROR "Sanity check failed: Feature ${feature} is enabled but condition does not hold true.")
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endif()
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qt_feature_set_cache_value(cache "${feature}" "${emit_if}" "${result}" "${arg_LABEL}")
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qt_feature_set_value("${feature}" "${cache}" "${emit_if}" "${condition}" "${arg_LABEL}")
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endfunction()
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function(qt_feature_definition feature name)
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qt_parse_all_arguments(arg "qt_feature_definition" "NEGATE" "VALUE" "" ${ARGN})
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# Store all the define related info in a unique variable key.
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set(key_name "_QT_FEATURE_DEFINE_DEFINITION_${feature}_${name}")
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set(${key_name} "FEATURE;${feature};NAME;${name};${ARGN}" PARENT_SCOPE)
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# Store the key for later evaluation and subsequent define generation:
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list(APPEND __QtFeature_define_definitions "${key_name}")
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set(__QtFeature_define_definitions ${__QtFeature_define_definitions} PARENT_SCOPE)
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endfunction()
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function(qt_evaluate_feature_definition key)
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if(NOT DEFINED ${key})
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qt_debug_print_variables(DEDUP MATCH "^_QT_FEATURE_DEFINE_DEFINITION")
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message(FATAL_ERROR "Attempting to evaluate feature define ${key} but its definition is missing. ")
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endif()
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cmake_parse_arguments(arg
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"NEGATE;"
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"FEATURE;NAME;VALUE;" "" ${${key}})
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set(expected ON)
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if (arg_NEGATE)
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set(expected OFF)
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endif()
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set(msg "")
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if(QT_FEATURE_${arg_FEATURE} STREQUAL expected)
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if (arg_VALUE)
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string(APPEND msg "#define ${arg_NAME} ${arg_VALUE}\n")
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else()
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string(APPEND msg "#define ${arg_NAME}\n")
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endif()
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string(APPEND __QtFeature_public_extra "${msg}")
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endif()
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set(__QtFeature_public_extra ${__QtFeature_public_extra} PARENT_SCOPE)
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endfunction()
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function(qt_extra_definition name value)
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qt_parse_all_arguments(arg "qt_extra_definition" "PUBLIC;PRIVATE" "" "" ${ARGN})
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if (arg_PUBLIC)
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string(APPEND __QtFeature_public_extra "\n#define ${name} ${value}\n")
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elseif(arg_PRIVATE)
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string(APPEND __QtFeature_private_extra "\n#define ${name} ${value}\n")
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endif()
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set(__QtFeature_public_extra ${__QtFeature_public_extra} PARENT_SCOPE)
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set(__QtFeature_private_extra ${__QtFeature_private_extra} PARENT_SCOPE)
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endfunction()
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function(qt_internal_generate_feature_line line feature)
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if (QT_FEATURE_${feature} STREQUAL "ON")
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set(line "#define QT_FEATURE_${feature} 1\n\n" PARENT_SCOPE)
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elseif(QT_FEATURE_${feature} STREQUAL "OFF")
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set(line "#define QT_FEATURE_${feature} -1\n\n" PARENT_SCOPE)
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elseif(QT_FEATURE_${feature} STREQUAL "UNSET")
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set(line "#define QT_FEATURE_${feature} 0\n\n" PARENT_SCOPE)
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else()
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message(FATAL_ERROR "${feature} has unexpected value \"${QT_FEATURE_${feature}}\"!")
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endif()
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endfunction()
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function(qt_internal_feature_write_file file features extra)
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message("Generating file ${file}.")
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set(contents "")
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foreach(it ${features})
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qt_internal_generate_feature_line(line "${it}")
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string(APPEND contents "${line}")
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endforeach()
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string(APPEND contents "${extra}")
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file(GENERATE OUTPUT "${file}" CONTENT "${contents}")
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endfunction()
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function(qt_feature_module_end target)
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set(all_features ${__QtFeature_public_features} ${__QtFeature_private_features} ${__QtFeature_internal_features})
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list(REMOVE_DUPLICATES all_features)
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foreach(feature ${all_features})
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qt_evaluate_feature(${feature})
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endforeach()
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set(enabled_public_features "")
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set(disabled_public_features "")
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set(enabled_private_features "")
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set(disabled_private_features "")
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foreach(feature ${__QtFeature_public_features})
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if(QT_FEATURE_${feature})
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list(APPEND enabled_public_features ${feature})
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else()
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list(APPEND disabled_public_features ${feature})
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endif()
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endforeach()
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foreach(feature ${__QtFeature_private_features})
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if(QT_FEATURE_${feature})
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list(APPEND enabled_private_features ${feature})
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else()
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list(APPEND disabled_private_features ${feature})
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endif()
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endforeach()
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foreach(key ${__QtFeature_define_definitions})
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qt_evaluate_feature_definition(${key})
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unset(${key} PARENT_SCOPE)
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endforeach()
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foreach(feature ${all_features})
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unset(_QT_FEATURE_DEFINITION_${feature} PARENT_SCOPE)
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endforeach()
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qt_internal_feature_write_file("${CMAKE_CURRENT_BINARY_DIR}/${__QtFeature_private_file}"
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"${__QtFeature_private_features}" "${__QtFeature_private_extra}"
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)
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qt_generate_forwarding_headers("${__QtFeature_library}" SOURCE "${__QtFeature_private_file}" PRIVATE)
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qt_internal_feature_write_file("${CMAKE_CURRENT_BINARY_DIR}/${__QtFeature_public_file}"
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"${__QtFeature_public_features}" "${__QtFeature_public_extra}"
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)
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qt_generate_forwarding_headers("${__QtFeature_library}" SOURCE "${__QtFeature_public_file}")
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if (NOT ("${target}" STREQUAL "NO_MODULE"))
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get_target_property(targetType "${target}" TYPE)
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if("${targetType}" STREQUAL "INTERFACE_LIBRARY")
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set(propertyPrefix "INTERFACE_")
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else()
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set(propertyPrefix "")
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set_target_properties("${target}" PROPERTIES EXPORT_PROPERTIES "QT_ENABLED_PUBLIC_FEATURES;QT_DISABLED_PUBLIC_FEATURES;QT_ENABLED_PRIVATE_FEATURES;QT_DISABLED_PRIVATE_FEATURES")
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endif()
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foreach(visibility public private)
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string(TOUPPER "${visibility}" capitalVisibility)
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foreach(state enabled disabled)
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string(TOUPPER "${state}" capitalState)
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set_property(TARGET "${target}" PROPERTY ${propertyPrefix}QT_${capitalState}_${capitalVisibility}_FEATURES "${${state}_${visibility}_features}")
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endforeach()
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endforeach()
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endif()
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unset(__QtFeature_library PARENT_SCOPE)
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unset(__QtFeature_public_features PARENT_SCOPE)
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unset(__QtFeature_private_features PARENT_SCOPE)
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unset(__QtFeature_internal_features PARENT_SCOPE)
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unset(__QtFeature_private_file PARENT_SCOPE)
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unset(__QtFeature_public_file PARENT_SCOPE)
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unset(__QtFeature_private_extra PARENT_SCOPE)
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unset(__QtFeature_public_extra PARENT_SCOPE)
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unset(__QtFeature_define_definitions PARENT_SCOPE)
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endfunction()
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function(qt_config_compile_test name)
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cmake_parse_arguments(arg "" "LABEL" "LIBRARIES;CODE" ${ARGN})
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foreach(library IN ITEMS ${arg_LIBRARIES})
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if(NOT TARGET "${library}")
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# If the dependency looks like a cmake target, then make this compile test
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# fail instead of cmake abort later via CMAKE_REQUIRED_LIBRARIES.
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string(FIND "${library}" "::" cmake_target_namespace_separator)
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if(NOT cmake_target_namespace_separator EQUAL -1)
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set(HAVE_${name} FALSE)
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break()
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endif()
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endif()
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endforeach()
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if(NOT DEFINED HAVE_${name})
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set(_save_CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}")
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set(CMAKE_REQUIRED_LIBRARIES "${arg_LIBRARIES}")
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check_cxx_source_compiles("${arg_UNPARSED_ARGUMENTS} ${arg_CODE}" HAVE_${name})
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set(CMAKE_REQUIRED_LIBRARIES "${_save_CMAKE_REQUIRED_LIBRARIES}")
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endif()
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set(TEST_${name} "${HAVE_${name}}" CACHE INTERNAL "${arg_LABEL}")
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endfunction()
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function(qt_config_compile_test_x86simd extension label)
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if (DEFINED TEST_X86SIMD_${extension})
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return()
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endif()
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try_compile("TEST_X86SIMD_${extension}"
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"${CMAKE_CURRENT_BINARY_DIR}/config.tests/x86_simd_${extension}"
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"${CMAKE_CURRENT_SOURCE_DIR}/config.tests/x86_simd"
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x86_simd
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CMAKE_FLAGS "-DSIMD:string=${extension}")
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set(TEST_subarch_${extension} "${TEST_X86SIMD_${extension}}" CACHE INTERNAL "${label}")
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endfunction()
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function(qt_make_features_available target)
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if(NOT "${target}" MATCHES "^${QT_CMAKE_EXPORT_NAMESPACE}::[a-zA-z][a-zA-Z0-9_]*$")
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message(FATAL_ERROR "${target} does not match ${QT_CMAKE_EXPORT_NAMESPACE}::[a-zA-z][a-zA-Z0-9_]*. INVALID NAME.")
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endif()
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if(NOT TARGET ${target})
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message(FATAL_ERROR "${target} not found.")
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endif()
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get_target_property(target_type "${target}" TYPE)
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if("${target_type}" STREQUAL "INTERFACE_LIBRARY")
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set(property_prefix "INTERFACE_")
|
|
else()
|
|
set(property_prefix "")
|
|
endif()
|
|
foreach(visibility IN ITEMS PUBLIC PRIVATE)
|
|
set(value ON)
|
|
foreach(state IN ITEMS ENABLED DISABLED)
|
|
get_target_property(features "${target}" ${property_prefix}QT_${state}_${visibility}_FEATURES)
|
|
if("${features}" STREQUAL "features-NOTFOUND")
|
|
continue()
|
|
endif()
|
|
foreach(feature IN ITEMS ${features})
|
|
if (DEFINED "QT_FEATURE_${feature}" AND NOT "${QT_FEATURE_${feature}}" STREQUAL "${value}")
|
|
message(FATAL_ERROR "Feature ${feature} is already defined and has a different value when importing features from ${target}.")
|
|
endif()
|
|
set(QT_FEATURE_${feature} "${value}" CACHE INTERNAL "Qt feature: ${feature} (from target ${target})")
|
|
endforeach()
|
|
set(value OFF)
|
|
endforeach()
|
|
endforeach()
|
|
endfunction()
|
|
|