qt5base-lts/cmake/QtCompilerFlags.cmake
Kai Köhne df2aa08187 CMake: Improve comment about how to disable warnings
Change-Id: I4367f2b585b7fdfaba2a815be885157a1db990cd
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-11-02 19:16:10 +01:00

28 lines
1.2 KiB
CMake

# Enable compiler warnings by default. All compilers except MSVC support -Wall -Wextra
#
# You can disable the warnings for specific targets (for instance containing 3rd party code)
# by calling qt_disable_warnings(target). This will set the QT_COMPILE_OPTIONS_DISABLE_WARNINGS
# property checked below, and is equivalent to qmake's CONFIG += warn_off.
set(_qt_compiler_warning_flags_on "")
set(_qt_compiler_warning_flags_off "")
if (MSVC)
list(APPEND _qt_compiler_warning_flags_on /W3)
list(APPEND _qt_compiler_warning_flags_off -W0)
else()
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})