We've ported all qExchange() to std::exchange by now, across all
modules, but the one in QScopedValueRollback was left behind, because
it requires C++20's version of std::exchange (constexpr).
Since q20::exchange was not approved, replace the qExchange() here
with two moves and add a comment to port to std::exchange() once we
can depend on C++20.
Then add QT_NO_QEXCHANGE to avoid new uses from creeping in.
Change-Id: I488e252433e78fb2766639dbe77a22a55196cfd1
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
This is a level A SIC, as it breaks
QFile f = "/some/path";
In general, it's not a good idea to have this implicit conversion. A
QFile is not a representation of a path, so the conversion should be
explicit.
I am going to keep the current semantics (implicit conversion) up to and
including Qt 6.8 (LTS). Starting from 6.9, the constructor will be
unconditionally explicit. This is deliberate, and done in order to make
users fix their code while staying in Qt 6, rather than encountering
this issue (and countless many more) if and when they upgrade from Qt 6
to Qt 7. In the meanwhile, users can opt-in to the new semantics by
defining a macro.
[ChangeLog][QtCore][QFile] The QFile constructors that take a path are
going to become unconditionally `explicit` in Qt 6.9. Code like `QFile f
= "/path";` will need to be ported to equivalent one (e.g. `QFile
f{"/path/"}`). This has been done in order to prevent a category of
mistakes when passing strings or paths to functions that actually take a
QFile. Users can opt-in to this change even before Qt 6.9 by defining
the QT_EXPLICIT_QFILE_CONSTRUCTION_FROM_PATH macro before including any
Qt header.
Change-Id: I065a09b9ce5d24c352664df0d48776545f6a0d8e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The default Windows SDK installed for VC++ 2022 is 10.0.19041, and still
has the issue described here, breaking builds if -Zcpreprocessor is set:
https://developercommunity.visualstudio.com/t/stdc17-generates-warning-compiling-windowsh/1249671
The issue might be fixed in SDK version 2104 (10.0.20348.0), but until
that is the default SDK when installing the compiler, turn that
conformance check off again.
Partially reverts commit 8cb832090a
Change-Id: Ib22f8d196b978274ce31be727826b902e79aaa99
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
/Zc:lambda seems buggy. Although in my experiments it works well
for 99% Qt repos, it seems some tests will trigger the bug and it
also blocks some new commits. So disable it for now, it's not stable
enough.
Now that this check is disabled, the workaround for tst_qstringapisymmetry
is also not needed anymore, so remove the workaround as well.
Partially reverts commit 8cb832090a
Change-Id: Icf0ecbbaa6262522470e5f5dea05705985ab18f1
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
For the full list, please refer to [1].
Needed to change the qstringapisymmetry unit test:
In theory we don't need the array to be static and it did compile
without any problems so far, indeed. However, with this patch applied,
MSVC complains that the lambda function below can't access the array.
I don't understand why, because we use [&] in the lambda and it should
capture all the variables in theory, but in reality it failed to
capture this variable in the end. And making the variable static
solves this issue. Maybe it's a MSVC bug.
Already tested locally. Most Qt repos build without any issues,
only very few repos are not tested, as my local environment
can't build them.
[1] https://docs.microsoft.com/en-us/cpp/build/reference/zc-conformance?view=msvc-170
Change-Id: I658427aa171ee1ae26610d0c68640b2f50789f15
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
CMakeLists.txt and .cmake files of significant size
(more than 2 lines according to our check in tst_license.pl)
now have the copyright and license header.
Existing copyright statements remain intact
Task-number: QTBUG-88621
Change-Id: I3b98cdc55ead806ec81ce09af9271f9b95af97fa
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
Previously we did not create Qt6:: namespaced aliases.
This is needed as a workaround preparation for getting the package name
of a module target from one of it's properties.
Before it would fail in qtinterfaceframework because
ifvehiclefunctions-simulation-server uses PUBLIC_LIBRARIES
in its qt_internal_add_app call, and because _add_app does not handle
such an option, some weirdness in qtbase's _add_app -> _add_executable
-> _extend_executable -> _register_target_dependencies ended up trying
to register PlatformAppInternal as package dependency.
That issue will be handled in separate changes.
Pick-to: 6.4
Task-number: QTBUG-104998
Change-Id: Ifd03528c95b08cb6837a6aaa26cbf97c0cbabbb4
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
To enable CET for MSVC, only passing "/CETCOMPAT" to
the linker should be sufficient.
Enabling generation of EH Continuation (EHCONT) metadata
is additional protection and should not be necessary.
It also requires all the dependencies to be re-compiled
with EHCONT enabled, otherwise the linker will refuse
to link the obj files. However, this is rather hard
to achieve if your application depends on many 3rd-party
libraries, so to let people enable CET more freely,
we don't enable EHCONT guard by default.
Pick-to: 6.4
Change-Id: Iba08a5ec56c474d291991fb751a0de764719bd85
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
It's deprecated as of Xcode 14, and generates a warning message if a
project explicitly enables bitcode. The App Store no longer accepts
bitcode submissions from Xcode 14.
Pick-to: 6.2 6.3 6.4 5.15
Change-Id: Ib1f9d5114ca4d8b1845ecc7a9de0473ee015db33
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Use a more detailed description instead.
Also adds the missing part of the GCC parameter.
Amends commit qtbase/42287255d38bf493b5731396b99bc9cd7b1baba4
References:
https://gcc.gnu.org/onlinedocs/gcc-12.1.0/gcc/Instrumentation-Options.html#Instrumentation-Options
Change-Id: I94a22ac7dfa80644e92fe01021f7868dfa02dd69
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
This will stop working with the next commit, which merges all basic x86
SIMD intrinsics into one configure test. As a result, linking almost
anything graphical on iOS (which is almost everything) causes the linker
to fail with undefined references to SIMD-optimized versions that didn't
get compiled.
Change-Id: Ib42b3adc93bf4d43bd55fffd16c288f4104a6ccc
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
qt_internal_undefine_global_definition disables an internal global
definition that is defined by the qt_internal_add_global_definition
function for a specific target.
Remove the ability to set the custom "undefine" flag for the
definitions since it's hard to control it using the introduced
function.
Pick-to: 6.2 6.3
Task-number: QTBUG-100334
Change-Id: Ic1637d97aa51bbdd06c5b191c57a941aa208d4dc
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Restore the 'QT_NO_JAVA_STYLE_ITERATORS' and
'QT_NO_NARROWING_CONVERSIONS_IN_CONNECT' definitions for Qt
targets.
Add the function that adds global definitions for Qt targets according
to the provided scope and the target property-based switch to disable
the definition for a specific target.
Pick-to: 6.2 6.3
Task-number: QTBUG-100295
Change-Id: I28697e81f9aabc45c48d79aae1e5caea141e04e1
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Previously we passed flags like -ld-fuse=lld only to compile
calls, but not to the link call of a compile test project.
Make sure to pass it to the link call instead by using
check_cxx_source_compiles + CMAKE_REQUIRED_LINK_OPTIONS
instead of
check_cxx_compiler_flag.
Note the flag that is passed is still via passed via the
compiler launcher and not directly to the linker.
Remove duplicate flag handling code.
Pick-to: 6.2 6.3
Change-Id: I1bf90573904a9df83240b6debfee3cc9e425c6bb
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Same treatment as is given to GCC further below.
Pick-to: 6.3 6.2
Change-Id: I3762c39a0b5d9add365ecf828b80d3ba432578c2
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Add '-bigobj' for MSVC and '-Wa,-mbig-obj' for MINGW to the
PlatformCommonInternal compiler options.
Pick-to: 6.3
Change-Id: I706b83d189a116a3ab6f93d59593e237e66b0e2e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Package global data in COMDAT sections for optimization.
According to the docs, this can significantly reduce the
size of the resulting binary executable.
I've tested build Qt with /Gw locally with and without
LTCG, the result shows /Gw can reduce the binary size
indeed, but not "significantly". The result also reveals
that exes can benefit much more from /Gw than dlls.
The result can be seen from the QTBUG-98894 bug report.
Microsoft Docs:
https://docs.microsoft.com/en-us/cpp/build/reference/gw-optimize-global-data?view=msvc-170
Task-number: QTBUG-98894
Change-Id: Ibce34c98e791e519d669a5fe39c0027d1459c382
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
Large address aware is enabled by default in 64-bit
compilers, but not 32-bit compilers. But Qt users
may build 32-bit Qt themself, in this case large
address aware is disabled in fact, and it may cause
some issues. So we pass /LARGEADDRESSAWARE to the
linker unconditionally to make sure large address
aware is enabled for both 32-bit and 64-bit builds.
Microsoft Docs:
https://docs.microsoft.com/en-us/cpp/build/reference/largeaddressaware-handle-large-addresses?view=msvc-170
Change-Id: Idb2603d9ba0ba9ef4477ce1c3174b7c7e8ba76f6
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
The constructor from a raw pointer should be
1) constexpr,
2) explicit, and
3) *private*.
We can do 1) without too much trouble.
2) is a (easy to fix) SIC in case of implicit conversions accidentally
relied upon from somewhere.
3) cannot be "easily" fixed by user code (they have to refactor), and
also, it's a BIC on Windows which encodes class members' access in
symbols. Someone may have been exporting some QList subclass, in turn
exporting the iterator classes, and therefore that someone now has the
constructors' symbols with a given access.
So, don't do 2+3 _just yet_ for user code, but set a deadline: Qt 6.5 is
the last that will support this. On Qt 6.6, we switch. All of this on
non-Windows, againt to avoid an ABI break. One can opt-in at any time
via a suitable define.
Given we have this define, use it to guard the other way around as well:
conversions from an iterator to a raw pointer should never be explicit
(there's std::to_address for this).
[ChangeLog][QtCore][QList] Converting a QList's iterator from and to a
raw pointer is deprecated, and will get removed in Qt 6.6. User code can
prepare for the change by defining QT_STRICT_QLIST_ITERATORS.
Change-Id: I0f34bfa3ac055c02af5a3ca159180304660dfc11
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This hasn't worked for some time. It's not in our CI and I don't think
it was working at all. When I tried to build it, I ran into several
problems with C++17 and an Internal Compiler Error I did not have any
interest in working around.
After discussing with the Intel compiler team, it was decided that
fixing those issues in the old compiler is not going to happen. Instead,
their recommendation is to adopt the new LLVM-based compiler, which
the last commit added support for.
This commit does not remove qmake support for the old ICC. It's possible
someone is using qmake with a non-Qt6 project and ICC.
Change-Id: Icb2516126f674e7b8bb3fffd16ad6350ddbd49e5
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
This includes a few cleanups to our .cmake files where it was easier to
combine existing sections of Clang / AppleClang that no longer needed to
be distinct.
icpx could be replaced with a shell script:
exec `basename $0`/clang++ --intel "$@"
tst_qnumeric is not passing
FAIL! : tst_QNumeric::classifyF() Compared values are not the same
Actual (qFpClassify(tiny / two)): 2
Expected (FP_SUBNORMAL) : 3
Loc: [/home/tjmaciei/src/qt/qt6-icx/qtbase/tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp(344)]
FAIL! : tst_QNumeric::classifyD() Compared values are not the same
Actual (qFpClassify(tiny / two)): 2
Expected (FP_SUBNORMAL) : 3
Loc: [/home/tjmaciei/src/qt/qt6-icx/qtbase/tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp(344)]
FAIL! : tst_QNumeric::floatDistance(denormal) Compared values are not the same
Actual (qFloatDistance(from, stop)): 0
Expected (expectedDistance) : 4194304
Loc: [/home/tjmaciei/src/qt/qt6-icx/qtbase/tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp(408)]
FAIL! : tst_QNumeric::doubleDistance(denormal) Compared values are not the same
Actual (qFloatDistance(from, stop)): 0
Expected (expectedDistance) : 2251799813685248
Loc: [/home/tjmaciei/src/qt/qt6-icx/qtbase/tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp(408)]
P
Change-Id: Icb2516126f674e7b8bb3fffd16ad59431e8c3379
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
This define used to be set for the entirety of the Qt build but
was lost during the qmake->CMake transition. Re-enable it.
Change-Id: Idc4cb6ada485158559485b60f62f76439550b255
Pick-to: 6.2
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Emscripten only supports
SSE1, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, and 128-bit AVX instruction
sets at this time.
https://emscripten.org/docs/porting/simd.html
Browsers might need to enable simd support in the advanced
configurations
about: config or chrome:flags
Enable by configuring Qt with -sse2
Pick-to: 6.2
Fixes: QTBUG-63924
Change-Id: Ifeafae20e199dee0d19689802ad20fd0bd424ca7
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
This reverts commit 64c111e10f.
The claim of the commit message, that we cannot use the gold linker,
does not seem to be true (anymore?). This is underlined by the fact
that CMake *forces* the gold linker for Android, whenever LTCG is
enabled (see Modules/Compiler/Clang.cmake as of CMake 3.21.1).
Change-Id: I90edac8555be4abdd44cd367228aeffb0d66b895
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Both the compiler and linker -fapplication-extension flag should only
be applied when building Qt's libraries (not executables).
It's up to the user project whether their code will be restricted with
application-extension-only APIs.
In qmake that can be achieved by adding to the qmake project
CONFIG += app_extension_api_only
In CMake it can be achieved by either adding the compiler and link flags
in the project directly (using target_X_options) or by setting the
appropriate setting in the Xcode project when using the Xcode
generator.
Amends e189126f1a
Pick-to: 6.2
Task-number: QTBUG-95199
Change-Id: Ie7a764d460a89c7650391abff0fcc5abfcabef64
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
We shouldn't force add the bitcode linker flags to user projects.
And we don't link anything when building Qt for iOS itself, we only
archive object files into static libraries.
The final decision whether bitcode should be used is up to the Xcode
project. That is controlled by Xcode's ENABLE_BITCODE option.
Bitcode compile flags are still added when building Qt itself.
Amends a046833176
Pick-to: 6.1 6.2
Task-number: QTBUG-95199
Change-Id: I04c77f659b82269bb8010ea262b2e51f36e9def3
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Also remove handling of older versions, because we only support
Visual Studio 2019 currently
Pick-to: 6.2
Change-Id: If66a46d970047fe25582e323df74e0a904ee92da
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
There's a number of upstream bugs that cause false positives;
do not make them errors.
Change-Id: I4151794d8d37177a47a34aef8d83accf4377d44a
Pick-to: 6.1 6.2
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
GCC 11.1 has a bug [1] in the preprocessor that leads to
-Wsuggest-override warnings being raised in random places, even under
pragmas that are supposed to suppress it. For some reason, NOT using the
integrated preprocessor fixes it, so add that flag as a workaround.
Also, GCC 11 introduces a family of warnings for C++20's deprecations of
mixed enum arithmetic, which we use all over the place. Avoid a hard
error for those warnings.
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100796
Change-Id: I3b2aefa385f191f207e7eb876bc1ed0b18fb342b
Pick-to: 6.1 6.2
Task-number: QTBUG-93360
Task-number: QTBUG-94059
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
After discussion we decided to opt-out the UNICODE definintion
behavior. To disable UNICODE in user projects the
qt6_disable_unicode_defines function could be used.
Amends 5b64e5950c
[ChangeLog][CMake] Enables the UNICODE and _UNICODE definitions on
WIN32 platforms by default for all cmake projects to reflect the
qmake behavior. Use qt6_disable_unicode_defines function to disable
the default unicode definitions.
Pick-to: 6.1
Fixes: QTBUG-93895
Change-Id: Id70ff7dcf8c74f660ec851f8b950e1e3b94d9fb4
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
It's needed in qtconnectivity, but currently the
qt_disable_apple_app_extension_api_only function is defined in
QtInternalTargets.cmake which is loaded only in qtbase.
Move the function to cmake/QtTargetHelpers.cmake.
Amends e189126f1a
Pick-to: 6.1
Change-Id: Ia2470e48a91385239394368780f5bbb223000113
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
In commit 013abe3206, I add
_CRT_SECURE_NO_WARNINGS definition for all Qt internal module targets,
to suppress MSVC warnings like:
warning C4996: 'strncpy': This function or variable may be unsafe.
However, when compiling some internal tools, such as qmake and qdoc,
such warnings also exist. To suppress this kind of warning entirely,
_CRT_SECURE_NO_WARNINGS definition should be added for all Qt internal
targets when using MSVC compiler.
Pick-to: 6.1
Change-Id: I9c37b20672f9d0f470e3e9ea847e5221f43bfc04
Reviewed-by: Yuhang Zhao <2546789017@qq.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
In particular that influences BundledLibrary targets.
Most internal targets already depended transitively on Qt::Platform
via Qt::Core as a public dependency. This was not the case for
BundledLibrary targets which don't link to Qt::Core.
This led to compilation issues in user projects when targeting
WebAssembly, due to mismatched flags between a bundled Harfbuzz vs
a user project. Probably other subtle issues as well (e.g. none of the
Windows specific compile definitions were passed to bundled libs).
Bundled libraries depend on PlatformCommonInternal already, so make
PlatformCommonInternal turn depend on the public Platform target.
I thought that was already the case, but we merely relied on the
Qt::Core dependency.
Note that Qt::Core should still list Platform as a public dependency,
so it gets propagated to user projects.
Amends acf9b3a68b
Change-Id: Ida3b219818f89ec6eba2c2d92c5db65ad56bc5a4
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Add '_WINDLL' definition for the MSVC compilers family.
Check the 'FEATURE_optimize_size' value before replacing compiler flags
in the qt_internal_add_optimize_full_flags function. This is required,
because Qt::Core and Qt::Gui modules lost their ability to shrink,
when selecting the appropriate build type or features.
Fixes: QTBUG-89952
Change-Id: I982c25ea84e4793b4006ead0ee516b3f3eb2a054
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Move UNICODE and _UNICODE definitions from the public Qt::Platform
target to the private Qt::PlatformCommonInternal target.
Fixes: QTBUG-89951
Change-Id: Ib4c1c4cab74acda0a43c4ddb3cffd3954393dc89
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
According to Microsoft's docs, /OPT:ICF is enabled by the
linker by default unless /OPT:NOICF or /DEBUG is specified.
If we are in RelWithDebInfo mode, /DEBUG is passed to the
linker to generate debug symbols, however, it caused the
identical COMDAT folding be disabled. We now pass /OPT:ICF
to the linker explicitly to prevent this.
[1] https://docs.microsoft.com/en-us/cpp/build/reference/opt-optimizations?view=msvc-160
Change-Id: I02099edb81034ace7bb19f1164d57829e3979a5f
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
This matches how it is in the qmake mkspec, silencing a lot of
warnings - but contrary to when building with qmake, it's only
applied when building Qt itself. For external projects built with
cmake, the Qt headers are included with -isystem, which silences any
warnings from those headers.
Change-Id: I1a498d3c2715cb73e647668cb7226ceeffb7ff0b
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
1. clang-cl doesn't support "-fno-exceptions", it uses msvc's parameter.
2. some parameters supported by msvc are not supported by clang-cl
and they are causing huge warning message flood, don't add them.
3. use correct optimize parameter for clang-cl.
Change-Id: Idbadf139127143c5fa6c49068588cb26f47da7a2
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
