99e14037e2
Persist the target name in the CMake cache description Change-Id: I124a8b89e5845d12301993b0546c8d5c91b8d8bb Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
443 lines
16 KiB
CMake
443 lines
16 KiB
CMake
function(qt_feature_module_begin)
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qt_parse_all_arguments(arg "qt_feature_module_begin"
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"" "LIBRARY;PRIVATE_FILE;PUBLIC_FILE" "PUBLIC_DEPENDENCIES;PRIVATE_DEPENDENCIES" ${ARGN})
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if ("${arg_LIBRARY}" STREQUAL "")
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message(FATAL_ERROR "qt_feature_begin_module needs a LIBRARY name!")
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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 "${arg_LIBRARY}" PARENT_SCOPE)
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set(__QtFeature_private_features "" PARENT_SCOPE)
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set(__QtFeature_public_features "" PARENT_SCOPE)
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set(__QtFeature_private_file "${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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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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set(__QtFeature_public_features ${__QtFeature_public_features} PARENT_SCOPE)
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set(__QtFeature_private_features ${__QtFeature_private_features} PARENT_SCOPE)
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endfunction()
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function(qt_evaluate_to_boolean expressionVar)
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if(${${expressionVar}})
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set(${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 ${arg_CONDITION})
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endif()
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if(${arg_DISABLE})
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set(result OFF)
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elseif((${arg_ENABLE}) OR (${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" "" ${ARGN})
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# Generate code:
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set(expected 1)
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if (arg_NEGATE)
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set(expected -1)
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endif()
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set(msg "\n#if defined(QT_FEATURE_${feature}) && QT_FEATURE_${feature} == ${expected}\n")
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if (arg_VALUE)
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string(APPEND msg "# define ${name} ${arg_VALUE}\n")
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else()
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string(APPEND msg "# define ${name}\n")
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endif()
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string(APPEND msg "#endif\n")
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# Store for later use:
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list(FIND __QtFeature_public_features "${feature}" public_index)
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if (public_index GREATER -1)
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string(APPEND __QtFeature_public_extra "${msg}")
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endif()
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list(FIND __QtFeature_private_features "${feature}" private_index)
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if (private_index GREATER -1)
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string(APPEND __QtFeature_private_extra "${msg}")
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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_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})
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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(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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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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unset(__QtFeature_library PARENT_SCOPE)
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unset(__QtFeature_private_features PARENT_SCOPE)
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unset(__QtFeature_public_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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endfunction()
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function(qt_config_compile_test name)
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cmake_parse_arguments(arg "" "LABEL" "LIBRARIES;CODE" ${ARGN})
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set(_save_CMAKE_REQUIRED_LIBRARIES "${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 "${_save_CMAKE_REQUIRED_LIBRARIES}")
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set(TEST_${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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string(TOUPPER ${extension} extension_uppercase)
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if (DEFINED TEST_X86SIMD_${extension})
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return()
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endif()
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try_compile(TEST_X86SIMD_${extension} "${CMAKE_CURRENT_BINARY_DIR}"
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"${CMAKE_CURRENT_SOURCE_DIR}/config.tests/x86_simd/main.cpp"
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COMPILE_DEFINITIONS -DQT_COMPILER_SUPPORTS_${extension_uppercase}
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OUTPUT_VARIABLE foo
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)
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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 "${target}" MATCHES "^Qt::[a-zA-z][a-zA-Z0-9_]*$")
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message(FATAL_ERROR "${target} does not match Qt::[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_")
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else()
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set(property_prefix "")
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endif()
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foreach(visibility IN ITEMS PUBLIC PRIVATE)
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set(value ON)
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foreach(state IN ITEMS ENABLED DISABLED)
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get_target_property(features "${target}" ${property_prefix}QT_${state}_${visibility}_FEATURES)
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if("${features}" STREQUAL "features-NOTFOUND")
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continue()
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endif()
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foreach(feature IN ITEMS ${features})
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if (DEFINED "QT_FEATURE_${feature}")
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message(FATAL_ERROR "Feature ${feature} is already defined when importing features from ${target}.")
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endif()
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set(QT_FEATURE_${feature} "${value}" CACHE INTERNAL "Qt feature: ${feature} (from target ${target})")
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endforeach()
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set(value OFF)
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endforeach()
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endforeach()
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endfunction()
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