e189126f1a
Needed to avoid linker warnings transformed into errors, when linking
QtWebEngine with qmake mixing.
ld: warning: linking against a dylib which is not safe for use in
application extensions:
The flag is added to libraries and plugins, unless opted out.
CMake equivalent of 944110089d
Task-number: QTBUG-83929
Task-number: QTBUG-75666
Change-Id: I3e9acca4712c9a266bf54c6e35e2fd2c0096692b
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
226 lines
10 KiB
CMake
226 lines
10 KiB
CMake
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function(qt_internal_set_warnings_are_errors_flags target)
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set(flags "")
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if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
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# Regular clang 3.0+
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if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "3.0.0")
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list(APPEND flags -Werror -Wno-error=\#warnings -Wno-error=deprecated-declarations)
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endif()
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elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "AppleClang")
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# using AppleClang
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# Apple clang 4.0+
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if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "4.0.0" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS_EQUAL "9.2")
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list(APPEND flags -Werror -Wno-error=\#warnings -Wno-error=deprecated-declarations)
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endif()
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elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
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# using GCC
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list(APPEND flags -Werror -Wno-error=cpp -Wno-error=deprecated-declarations)
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# GCC prints this bogus warning, after it has inlined a lot of code
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# error: assuming signed overflow does not occur when assuming that (X + c) < X is always false
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list(APPEND flags -Wno-error=strict-overflow)
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# GCC 7 includes -Wimplicit-fallthrough in -Wextra, but Qt is not yet free of implicit fallthroughs.
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if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "7.0.0")
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list(APPEND flags -Wno-error=implicit-fallthrough)
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endif()
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if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "9.0.0")
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# GCC 9 introduced these but we are not clean for it.
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list(APPEND flags -Wno-error=deprecated-copy -Wno-error=redundant-move -Wno-error=init-list-lifetime)
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# GCC 9 introduced -Wformat-overflow in -Wall, but it is buggy:
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list(APPEND flags -Wno-error=format-overflow)
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endif()
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# Work-around for bug https://code.google.com/p/android/issues/detail?id=58135
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if (ANDROID)
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list(APPEND flags -Wno-error=literal-suffix)
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endif()
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elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Intel")
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# Intel CC 13.0 +, on Linux only
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if (LINUX)
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if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "13.0.0")
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# 177: function "entity" was declared but never referenced
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# (too aggressive; ICC reports even for functions created due to template instantiation)
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# 1224: #warning directive
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# 1478: function "entity" (declared at line N) was declared deprecated
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# 1786: function "entity" (declared at line N of "file") was declared deprecated ("message")
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# 1881: argument must be a constant null pointer value
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# (NULL in C++ is usually a literal 0)
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list(APPEND flags -Werror -ww177,1224,1478,1786,1881)
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endif()
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endif()
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elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
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# In qmake land, currently warnings as errors are only enabled for
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# MSVC 2012, 2013, 2015.
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# Respectively MSVC_VERRSIONs are: 1700-1799, 1800-1899, 1900-1909.
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if(MSVC_VERSION GREATER_EQUAL 1700 AND MSVC_VERSION LESS_EQUAL 1909)
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list(APPEND flags /WX)
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endif()
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endif()
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set(warnings_are_errors_enabled_genex
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"$<NOT:$<BOOL:$<TARGET_PROPERTY:QT_SKIP_WARNINGS_ARE_ERRORS>>>")
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# Apprently qmake only adds -Werror to CXX and OBJCXX files, not C files. We have to do the
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# same otherwise MinGW builds break when building 3rdparty\md4c\md4c.c (and probably on other
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# platforms too).
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set(cxx_only_genex "$<OR:$<COMPILE_LANGUAGE:CXX>,$<COMPILE_LANGUAGE:OBJCXX>>")
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set(final_condition_genex "$<AND:${warnings_are_errors_enabled_genex},${cxx_only_genex}>")
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set(flags_generator_expression "$<${final_condition_genex}:${flags}>")
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target_compile_options("${target}" INTERFACE "${flags_generator_expression}")
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endfunction()
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add_library(PlatformCommonInternal INTERFACE)
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add_library(Qt::PlatformCommonInternal ALIAS PlatformCommonInternal)
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add_library(PlatformModuleInternal INTERFACE)
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add_library(Qt::PlatformModuleInternal ALIAS PlatformModuleInternal)
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target_link_libraries(PlatformModuleInternal INTERFACE PlatformCommonInternal)
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add_library(PlatformPluginInternal INTERFACE)
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add_library(Qt::PlatformPluginInternal ALIAS PlatformPluginInternal)
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target_link_libraries(PlatformPluginInternal INTERFACE PlatformCommonInternal)
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add_library(PlatformToolInternal INTERFACE)
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add_library(Qt::PlatformToolInternal ALIAS PlatformToolInternal)
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target_link_libraries(PlatformToolInternal INTERFACE PlatformCommonInternal)
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if(WARNINGS_ARE_ERRORS)
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qt_internal_set_warnings_are_errors_flags(PlatformModuleInternal)
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qt_internal_set_warnings_are_errors_flags(PlatformPluginInternal)
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qt_internal_set_warnings_are_errors_flags(PlatformToolInternal)
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endif()
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if(WIN32)
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# Needed for M_PI define. Same as mkspecs/features/qt_module.prf.
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# It's set for every module being built, but it's not propagated to user apps.
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target_compile_definitions(PlatformModuleInternal INTERFACE _USE_MATH_DEFINES)
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endif()
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if(FEATURE_largefile AND UNIX)
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target_compile_definitions(PlatformModuleInternal
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INTERFACE "_LARGEFILE64_SOURCE;_LARGEFILE_SOURCE")
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endif()
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# We can't use the gold linker on android with the NDK, which is the default
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# linker. To build our own target we will use the lld linker.
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if (ANDROID)
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target_link_options(PlatformModuleInternal INTERFACE -fuse-ld=lld)
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endif()
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target_compile_definitions(PlatformCommonInternal INTERFACE $<$<NOT:$<CONFIG:Debug>>:QT_NO_DEBUG>)
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if(MACOS)
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target_compile_definitions(PlatformCommonInternal INTERFACE GL_SILENCE_DEPRECATION)
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elseif(UIKIT)
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target_compile_definitions(PlatformCommonInternal INTERFACE GLES_SILENCE_DEPRECATION)
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endif()
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if(UIKIT)
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# Do what mkspecs/features/uikit/default_pre.prf does, aka enable sse2 for
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# simulator_and_device_builds.
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if(FEATURE_simulator_and_device)
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# Setting the definition on PlatformCommonInternal behaves slightly differently from what
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# is done in qmake land. This way the define is not propagated to tests, examples, or
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# user projects built with qmake, but only modules, plugins and tools.
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# TODO: Figure out if this ok or not (sounds ok to me).
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target_compile_definitions(PlatformCommonInternal INTERFACE QT_COMPILER_SUPPORTS_SSE2)
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endif()
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endif()
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# Taken from mkspecs/common/msvc-version.conf and mkspecs/common/msvc-desktop.conf
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if (MSVC)
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if (MSVC_VERSION GREATER_EQUAL 1799)
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target_compile_options(PlatformCommonInternal INTERFACE
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-FS
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-Zc:rvalueCast
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-Zc:inline
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)
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endif()
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if (MSVC_VERSION GREATER_EQUAL 1899)
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target_compile_options(PlatformCommonInternal INTERFACE
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-Zc:strictStrings
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-Zc:throwingNew
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)
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endif()
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if (MSVC_VERSION GREATER_EQUAL 1909)
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target_compile_options(PlatformCommonInternal INTERFACE
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-Zc:referenceBinding
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)
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endif()
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target_compile_options(PlatformCommonInternal INTERFACE -Zc:wchar_t)
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target_link_options(PlatformCommonInternal INTERFACE
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-DYNAMICBASE -NXCOMPAT
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$<$<CONFIG:Release>:-OPT:REF>
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$<$<CONFIG:RelWithDebInfo>:-OPT:REF>
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)
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endif()
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function(qt_get_implicit_sse2_genex_condition out_var)
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set(is_shared_lib "$<STREQUAL:$<TARGET_PROPERTY:TYPE>,SHARED_LIBRARY>")
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set(is_static_lib "$<STREQUAL:$<TARGET_PROPERTY:TYPE>,STATIC_LIBRARY>")
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set(is_static_qt_build "$<NOT:$<BOOL:${QT_BUILD_SHARED_LIBS}>>")
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set(is_staitc_lib_during_static_qt_build "$<AND:${is_static_qt_build},${is_static_lib}>")
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set(enable_sse2_condition "$<OR:${is_shared_lib},${is_staitc_lib_during_static_qt_build}>")
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set(${out_var} "${enable_sse2_condition}" PARENT_SCOPE)
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endfunction()
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function(qt_auto_detect_implicit_sse2)
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# sse2 configuration adjustment in qt_module.prf
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# If the compiler supports SSE2, enable it unconditionally in all of Qt shared libraries
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# (and only the libraries). This is not expected to be a problem because:
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# - on Windows, sharing of libraries is uncommon
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# - on Mac OS X, all x86 CPUs already have SSE2 support (we won't even reach here)
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# - on Linux, the dynamic loader can find the libraries on LIBDIR/sse2/
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# The last guarantee does not apply to executables and plugins, so we can't enable for them.
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set(__implicit_sse2_for_qt_modules_enabled FALSE PARENT_SCOPE)
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if(TEST_subarch_sse2 AND NOT TEST_arch_${TEST_architecture_arch}_subarch_sse2)
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qt_get_implicit_sse2_genex_condition(enable_sse2_condition)
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set(enable_sse2_genex "$<${enable_sse2_condition}:${QT_CFLAGS_SSE2}>")
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target_compile_options(PlatformModuleInternal INTERFACE ${enable_sse2_genex})
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set(__implicit_sse2_for_qt_modules_enabled TRUE PARENT_SCOPE)
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endif()
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endfunction()
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qt_auto_detect_implicit_sse2()
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function(qt_auto_detect_fpmath)
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# fpmath configuration adjustment in qt_module.prf
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set(fpmath_supported FALSE)
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if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
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if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "3.4")
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set(fpmath_supported TRUE)
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endif()
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elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "AppleClang")
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if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "5.1")
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set(fpmath_supported TRUE)
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endif()
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elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
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set(fpmath_supported TRUE)
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endif()
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if(fpmath_supported AND TEST_architecture_arch STREQUAL "i386" AND __implicit_sse2_for_qt_modules_enabled)
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qt_get_implicit_sse2_genex_condition(enable_sse2_condition)
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set(enable_fpmath_genex "$<${enable_sse2_condition}:-mfpmath=sse>")
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target_compile_options(PlatformModuleInternal INTERFACE ${enable_fpmath_genex})
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endif()
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endfunction()
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qt_auto_detect_fpmath()
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function(qt_handle_apple_app_extension_api_only)
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if(APPLE)
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# Build Qt libraries with -fapplication-extension. Needed to avoid linker warnings
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# transformed into errors on darwin platforms.
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set(flags "-fapplication-extension")
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set(genex_condition "$<NOT:$<BOOL:$<TARGET_PROPERTY:QT_NO_APP_EXTENSION_ONLY_API>>>")
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set(flags "$<${genex_condition}:${flags}>")
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target_compile_options(PlatformModuleInternal INTERFACE ${flags})
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target_link_options(PlatformModuleInternal INTERFACE ${flags})
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target_compile_options(PlatformPluginInternal INTERFACE ${flags})
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target_link_options(PlatformPluginInternal INTERFACE ${flags})
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endif()
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endfunction()
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function(qt_disable_apple_app_extension_api_only target)
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set_target_properties("${target}" PROPERTIES QT_NO_APP_EXTENSION_ONLY_API TRUE)
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endfunction()
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qt_handle_apple_app_extension_api_only()
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