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| author | Alexandru Croitor <alexandru.croitor@qt.io> | 2020-02-24 12:38:55 +0100 |
|---|---|---|
| committer | Alexandru Croitor <alexandru.croitor@qt.io> | 2020-02-25 15:43:15 +0100 |
| commit | 05a0a278fca7a8df9ab3b357f0e51056db80f85d (patch) | |
| tree | a95d75b6de4068c72cda1594a7e1f7ed6c5ff09e /cmake/QtCompilerFlags.cmake | |
| parent | 9147065dc44bc6dee86e7a50c988f311eac724b6 (diff) | |
CMake: Allow disabling warnings similar to CONFIG += warn_off
The QT_COMPILE_OPTIONS_WARNINGS_OFF property can be set on targets
in order to disable adding the default compiler warnings flags.
This is useful when building 3rd party library code.
Change-Id: I9f58ca4543b5ea0d2051b7f94f0042d24c4e3a16
Reviewed-by: Leander Beernaert <leander.beernaert@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Diffstat (limited to 'cmake/QtCompilerFlags.cmake')
| -rw-r--r-- | cmake/QtCompilerFlags.cmake | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/cmake/QtCompilerFlags.cmake b/cmake/QtCompilerFlags.cmake index 35733027f5..a376ac0097 100644 --- a/cmake/QtCompilerFlags.cmake +++ b/cmake/QtCompilerFlags.cmake @@ -1,6 +1,25 @@ # Set warnings. All compilers except MSVC support -Wall -Wextra +# Allow opting out by setting a QT_COMPILE_WARNINGS_OFF property on targets. This would be the +# equivalent of qmake's CONFIG += warn_off. + +set(_qt_compiler_warning_flags_on "") +set(_qt_compiler_warning_flags_off "") + if (MSVC) - add_compile_options(/W3) + list(APPEND _qt_compiler_warning_flags_on /W3) + list(APPEND _qt_compiler_warning_flags_off -W0) else() - add_compile_options(-Wall -Wextra) + list(APPEND _qt_compiler_warning_flags_on -Wall -Wextra) + list(APPEND _qt_compiler_warning_flags_off -w) endif() + +set(_qt_compiler_warning_flags_condition + "$<BOOL:$<TARGET_PROPERTY:QT_COMPILE_OPTIONS_DISABLE_WARNINGS>>") +set(_qt_compiler_warning_flags_genex + "$<IF:${_qt_compiler_warning_flags_condition},${_qt_compiler_warning_flags_off},${_qt_compiler_warning_flags_on}>") + +# Need to replace semicolons so that the list is not wrongly expanded in the add_compile_options +# call. +string(REPLACE ";" "$<SEMICOLON>" + _qt_compiler_warning_flags_genex "${_qt_compiler_warning_flags_genex}") +add_compile_options(${_qt_compiler_warning_flags_genex}) |