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function(qt_internal_set_warnings_are_errors_flags target)
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
# Regular clang 3.0+
if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "3.0.0")
target_compile_options("${target}" INTERFACE -Werror -Wno-error=\#warnings -Wno-error=deprecated-declarations)
endif()
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "AppleClang")
# using AppleClang
# Apple clang 4.0+
if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "4.0.0")
target_compile_options("${target}" INTERFACE -Werror -Wno-error=\#warnings -Wno-error=deprecated-declarations)
endif()
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
# using GCC
target_compile_options("${target}" INTERFACE -Werror -Wno-error=cpp -Wno-error=deprecated-declarations)
# GCC prints this bogus warning, after it has inlined a lot of code
# error: assuming signed overflow does not occur when assuming that (X + c) < X is always false
target_compile_options("${target}" INTERFACE -Wno-error=strict-overflow)
# GCC 7 includes -Wimplicit-fallthrough in -Wextra, but Qt is not yet free of implicit fallthroughs.
if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "7.0.0")
target_compile_options("${target}" INTERFACE -Wno-error=implicit-fallthrough)
endif()
if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "9.0.0")
# GCC 9 introduced these but we are not clean for it.
target_compile_options("${target}" INTERFACE -Wno-error=deprecated-copy -Wno-error=redundant-move -Wno-error=init-list-lifetime)
endif()
# Work-around for bug https://code.google.com/p/android/issues/detail?id=58135
if (ANDROID)
target_compile_options("${target}" INTERFACE -Wno-error=literal-suffix)
endif()
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Intel")
# Intel CC 13.0 +, on Linux only
if (LINUX)
if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "13.0.0")
# 177: function "entity" was declared but never referenced
# (too aggressive; ICC reports even for functions created due to template instantiation)
# 1224: #warning directive
# 1478: function "entity" (declared at line N) was declared deprecated
# 1786: function "entity" (declared at line N of "file") was declared deprecated ("message")
# 1881: argument must be a constant null pointer value
# (NULL in C++ is usually a literal 0)
target_compile_options("${target}" INTERFACE -Werror -ww177,1224,1478,1786,1881)
endif()
endif()
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
# using Visual Studio C++
target_compile_options("${target}" INTERFACE /WX)
endif()
endfunction()
add_library(PlatformModuleInternal INTERFACE)
add_library(Qt::PlatformModuleInternal ALIAS PlatformModuleInternal)
add_library(PlatformPluginInternal INTERFACE)
add_library(Qt::PlatformPluginInternal ALIAS PlatformPluginInternal)
add_library(PlatformToolInternal INTERFACE)
add_library(Qt::PlatformToolInternal ALIAS PlatformToolInternal)
if(WARNINGS_ARE_ERRORS)
qt_internal_set_warnings_are_errors_flags(PlatformModuleInternal)
qt_internal_set_warnings_are_errors_flags(PlatformPluginInternal)
qt_internal_set_warnings_are_errors_flags(PlatformToolInternal)
endif()
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