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CMake: Fix handling of negated feature config values

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Consider a negated feature config value like the following:
qt_feature_config("foo" QMAKE_PUBLIC_QT_CONFIG NEGATE)

If this feature was disabled, it would turn up in both,
enabled_features and disabled_features of module .pri files.
Also, QT_CONFIG would contain foo.

Expected however is that QT_CONFIG contains no-foo, and only
disabled_features contains foo.

Fix this by prepending a "no_" prefix to the value, similar to the
"no-" prefix in the qmake build. The qt_correct_config function was
adjusted to recognize "no_foo" and translate it to the qmakeish
"no-foo" config value.

Config values that start with "no_" but do not correspond to a feature
are left untouched. You can still have values like
"no_valley_too_deep" or "no_mountain_too_high".

Change-Id: I23d8b18c84e04ea6dfa25cc6ccd8f7e86211b144
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
This commit is contained in:
Joerg Bornemann 2020-04-20 20:31:31 +02:00
parent a54294369d
commit 8ef4edc09e
2 changed files with 22 additions and 7 deletions
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18
cmake/QtBuild.cmake
View File

@ -696,12 +696,26 @@ endfunction()
function(qt_correct_config out_var config)
set(corrected_config "")
foreach(name ${config})
# Is the config value a known feature?
get_property(feature_original_name GLOBAL PROPERTY "QT_FEATURE_ORIGINAL_NAME_${name}")
if(feature_original_name)
list(APPEND corrected_config "${feature_original_name}")
else()
list(APPEND corrected_config "${name}")
continue()
endif()
# Is the config value a negated known feature, e.g. no_foo?
# Then add the config value no-foo.
if(name MATCHES "^no_(.*)")
get_property(feature_original_name GLOBAL PROPERTY
"QT_FEATURE_ORIGINAL_NAME_${CMAKE_MATCH_1}")
if(feature_original_name)
list(APPEND corrected_config "no-${feature_original_name}")
continue()
endif()
endif()
# The config value is no known feature. Add the value as is.
list(APPEND corrected_config "${name}")
endforeach()
set(${out_var} ${corrected_config} PARENT_SCOPE)
endfunction()

11
cmake/QtFeature.cmake
View File

@ -312,16 +312,17 @@ function(qt_evaluate_qmake_config_values key)
"FEATURE;NAME;CONFIG_VAR_NAME"
"" ${${key}})
set(expected "NOT")
if (arg_NEGATE)
set(expected "")
endif()
# If no custom name is specified, then the config value is the same as the feature name.
if(NOT arg_NAME)
set(arg_NAME "${arg_FEATURE}")
endif()
set(expected "NOT")
if (arg_NEGATE)
set(expected "")
string(PREPEND arg_NAME "no_")
endif()
# The feature condition is false, there is no need to export any config values.
if(${expected} ${QT_FEATURE_${arg_FEATURE}})
return()