123 Commits

Author SHA1 Message Date
Joerg Bornemann
605913f9d7 CMake: Run configure tests lazily
qt_config_compile_test doesn't run the compile test immediately anymore
but just defines the test. Compile tests defined with this function are
run only if their value TEST_${name} is requested in a feature's
condition variable (EMIT_IF, CONDITION, ENABLE, ...).

If you need the TEST_${name} variable regardless of any feature
conditions, call qt_run_config_compile_test right after
qt_config_compile_test.

This avoids having e.g. Windows-specific compile tests on Linux (and
vice versa) and speeds configuration up a bit.

Fixes: QTBUG-115705
Task-number: QTBUG-107248
Change-Id: I38c4d2a48b1e5dc2f5133e0ad507ede0520ca3b8
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2024-11-11 21:00:42 +01:00
Chen Zhanwang
73ce5a940a Add LSX and LASX configure detection
Adds loongarch simd extension(LSX LASX) configure test and
-feature-lsx and -feature-lasx configure options.
Add detection of LSX and LASX at run-time in qsimd.cpp.

Change-Id: I63eab2f4f45c306b672a89b376e0cbc01da0df83
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2024-10-22 18:12:15 +02:00
Allan Sandfeld Jensen
70738cf726 Fix runtime CPU feature detection for ARM
We had no routines for checking compiler support instead only compiler
currently enabled.

Change-Id: I5543e4cff2b0bab494e11abf257061147baaf0d7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2024-10-17 01:43:02 +02:00
Joerg Bornemann
08c6de0c5d CMake: Add a way to use system/bundled 3rdparty libs in bulk
[ChangeLog][CMake] Added the configure feature 'force-system-libs'.
Enabling this feature enables every 'system-foolib' feature, and the
system-provided 3rdparty library foo will be used. If the library is not
found, an error is yielded. Also added the analogous
'force-bundled-libs' feature that enforces the usage of bundled 3rdparty
libs.

[ChangeLog][CMake] The configure script gained the options
-force-system-libs and -force-bundled-libs that control the same-named
configure features.

Since we now need a way to mark a feature as "controlling the usage of a
system 3rdparty library", we added the SYSTEM_LIBRARY feature to the
qt_feature command. Patches that add this argument to qt_feature calls
in other repositories follow.

Fixes: QTBUG-96910
Change-Id: I5c411409ea5f3f6425b6bed6fa00d10eddbc366c
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2024-06-18 07:05:30 +02:00
Joerg Bornemann
ad227368c3 CMake: Yield error if a feature is ENABLEd and CONDITION is false
Consider a feature that has ENABLE and CONDITION expressions. For
example, system-libb2 on a Linux machine that does not have the
libb2-dev package installed:

qt_feature("system-libb2" PRIVATE
    LABEL "Using system libb2"
    CONDITION Libb2_FOUND
    ENABLE INPUT_libb2 STREQUAL 'system'
    DISABLE INPUT_libb2 STREQUAL 'no' OR INPUT_libb2 STREQUAL 'qt'
)

If the feature is enabled by the user by setting
FEATURE_system_libb2=ON, then there's an error:
    Feature "system_libb2": Forcing to "ON" breaks its condition...

This is expected.

If the feature is enabled by the user by triggering the ENABLE condition
via the -system-libb2 configure flag (that sets INPUT_libb2 to
"system"), we did not get an error message.

This was unexpected and inconsistent.

Now, we consider features that are enabled via their ENABLE condition as
set by the user and yield an error if the CONDITION doesn't match.

Pick-to: 6.8
Fixes: QTBUG-126144
Change-Id: I249baf9ab4f434f5a96894f4ec055f70859ffca9
Reviewed-by:  Alexey Edelev <alexey.edelev@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2024-06-12 12:39:21 +02:00
Giuseppe D'Angelo
9ff1e6d80b Add hardening build options
This commit enables hardened-specific checks and codegen, inspired by
GCC 14's -fhardened command line switch and LLVM/libc++'s hardened
modes.

We enable (depending on compiler capabilities):

* -ftrivial-auto-var-init=pattern;
* -fstack-protector-strong;
* -fstack-clash-protection;
* -fcf-protection=full or /CETCOMPAT;
* -D_FORTIFY_SOURCE=3 or 2 on Glibc, depending on the Glibc version,
  provided that some optimization level is enabled (release build or
  optimized debug build);
* on libstdc++, -D_GLIBCXX_ASSERTIONS;
* on libc++, -D_LIBCPP_HARDENING_MODE set to
  _LIBCPP_HARDENING_MODE_EXTENSIVE in debug and to
  _LIBCPP_HARDENING_MODE_FAST in release (_DEBUG is too slow);
* -Wl,-z,relro,-z,now.

This aligns us 100% with -fhardened (we already pass -fPIE and -pie
anyhow). Some Linux distributions already ship GCC/Clang with some of
these options enabled by default.

The check for Intel CET has been amended to always test if the compiler
supports the corresponding flag; and, if so, enable the feature. Before,
it was behind a configure option and the test only checked if the
compiler had CET support automatically active (the test didn't pass
-fcf-protection to the compiler).

The check for -fstack-protector-strong has been made general (rather
than QNX-specific). We don't support QNX < 7 anyhow.

Finally, the qt_config_linker_supports_flag_test test has been
amended to also support MSVC.

All of the hardening options are enabled by default.

[ChangeLog][Build System] Qt builds by default in "hardened mode",
meaning that a series of security-related compiler options are
automatically enabled. In the unlikely case in which these options
constitute an unacceptable performance hit, it is possible to disable
individual hardening options when configuring Qt.

Change-Id: I2c026b0438010ad10d5e7b1136fedf4ae3af8822
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2024-03-19 02:52:43 +01:00
Tor Arne Vestbø
d04cf2c58b cmake: Rename QT_UIKIT_SDK to QT_APPLE_SDK
The SDK is relevant for all Apple systems, including macOS, iOS, tvOS,
watchOS, and visionOS.

We still pick up -DQT_UIKIT_SDK for iOS for compatibility.

[ChangeLog][CMake] The -sdk configure argument now maps
to the QT_APPLE_SDK CMake variable. QT_UIKIT_SDK is still
supported for iOS builds for compatibility.

Change-Id: I983a2f23c2414eb73cd35bb83738088defb45cbd
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2024-03-18 19:04:14 +01:00
Alexandru Croitor
3334a77ecf CMake: Teach qt_config_compile_test to set the build output
The qt_config_compile_test command now assigns the build output of a
config test to the TEST_${name}_OUTPUT variable in the callers scope.

We can use this to show error messages, and it can also be seen in
trace files for better troubleshooting.

It works for all project based calls with CMake 3.16, but for source
code based tests, due to the usage of check_cxx_source_compiles instead
of try_compile, it will only work for CMake 3.23+.

Pick-to: 6.5 6.6 6.7
Task-number: QTBUG-122596
Change-Id: Ib9664c158ba9a391bd17bf30a28f9a34eba991d5
Reviewed-by:  Alexey Edelev <alexey.edelev@qt.io>
2024-02-21 18:21:41 +01:00
Joerg Bornemann
53eb8dd06d CMake: Simplify feature calculation
Since configure doesn't translate -feature-foo to INPUT_foo=ON anymore,
we can remove the code that tries to calculate the feature value from
INPUT_foo.

Task-number: QTBUG-120529
Change-Id: I4829bb634ca8c3f08b489469532b65541d76fa70
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2024-02-13 20:11:21 +01:00
Joerg Bornemann
55d81b3eff CMake: Remove qt_internal_compute_features_from_possible_inputs
This function calculated the values of the features 'no-prefix' and
'developer-build' from INPUT_* values. Since configure directly
translates -no-prefix and -developer-build to FEATURE_no_prefix and
FEATURE_developer_build, we can remove the function.

Task-number: QTBUG-120529
Change-Id: Ide1fa61af175d8f6a6aa6363dfdfa94912836345
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2024-02-13 20:11:21 +01:00
Alexandru Croitor
8c14b0c02f CMake: Dynamically include and install Helpers and other files
Instead of duplicating file names that need to be include()'ed
in two different places if the files are meant to be used
in both Qt builds and public user projects and then also mention the
name when installing, extract the file names into lists returned by
functions.

Call these functions where needed to iteratively include() the files
as well as install them, without having to remember updating multiple
code locations.

The new functions return the following list of file names:
- upstream cmake modules that need to be included during a Qt build
- public (Qt build and user project) cmake helpers that need to be
  included and installed
- private (Qt build only) cmake helpers that need to be included and
  installed
- public files that need to be installed, but not included
- private files that need to be installed, but not included

We also generate the list of public files to include in
Qt6Config.cmake.

Task-number: QTBUG-86035
Change-Id: I1e7287f4e1d041c723f144ba9626b34f873c4891
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
2023-11-27 19:53:42 +01:00
Alexandru Croitor
098a774998 CMake: Split and refactor QtSetup.cmake
Split all code in QtSetup into separate functions and macros, put them
in more appropriate files, and call them in
qt_internal_setup_build_and_global_variables.

A new QtBuildOptionsHelpers.cmake is created which takes care of
computing the default values of user-customizable options that are not
pure configure features, like the cmake build type, whether to build
tests / examples, whether to enable ccache, etc.

The new function calls added in
qt_internal_setup_build_and_global_variables
try to preserve the previous code flow when QtBuild was included
in-between the code that was run in QtSetup.

Macros that have dependencies on various global variables were marked
as such with inline comments for easier navigation and comprehension.

After this change, QtSetup.cmake just includes QtBuild.cmake. We leave
it to exist for easier git blaming, but new code should not be added
to it unless really necessary.

The intent is to merge a variant of this change to 6.6 and 6.5 as
well.

Task-number: QTBUG-86035
Change-Id: I3409c2d3ea8ee19a69104b12ab2692966ba5f9cf
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
2023-11-27 19:53:42 +01:00
Joerg Bornemann
814de4c2ce CMake: Fix config condition evaluator
Use recursive descent to handle parentheses in config condition
expressions. This fixes cases like 'NOT (A AND B)'.

Fixes: QTBUG-117053
Change-Id: Iab1b6173abe00d763808bb972a9a5443ffa0938d
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Amir Masoud Abdol <amir.abdol@qt.io>
2023-09-21 21:46:46 +02:00
Joerg Bornemann
49ff83fcef CMake: Use while instead of foreach in qt_evaluate_config_expression
By using a while loop instead of a foreach(RANGE), we can simplify the
code and remove the skipNext variable.

Also, we need to access the last used iteration index in a future
commit. This is not possible with a foreach loop without saving the
index in another variable.

Change-Id: I39306a0105fb31a6a8f39e9d4c47ee3424599a2b
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Amir Masoud Abdol <amir.abdol@qt.io>
2023-09-21 21:46:46 +02:00
Joerg Bornemann
f5fc45bcb4 CMake: Remove superfluous code from qt_evaluate_config_expression
All of the continue() statements are not needed. There is no code after
the if-else chain.

Change-Id: I16188d14b4f05cb1e5f29bac4657149c4fce60a4
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Amir Masoud Abdol <amir.abdol@qt.io>
2023-09-21 21:46:46 +02:00
Alexandru Croitor
d1a17d9655 CMake: Fix reconfiguration when -no-opengl is specified
In a previous change, we ensured that all INPUT_foo cache variables are
unset at the end of configuration, so they don't influence feature
re-evaluation in case if a command line flag like -no-gui is not
specified upon second reconfiguration and a FEATURE_foo is manually
toggled in the CMakeCache.txt, effectively getting rid of
stale INPUT_foo values.

Unfortunately that causes an issue when configuring with -no-opengl
and then trying to reconfigure with 'cmake .'

Specifically various feature options like ENABLE / DISABLE use
INPUT_foo variables in their expressions.
qt_configure_add_report_entry CONDITIONs also use them.

These expect the INPUT_foo variables to be persisted, and if they are
removed, the expressions might be re-evaluated to a different value,
and cause re-configuration to fail or unexpectedly toggle features.

To support both cases described above, instead of removing all INPUT
variables when configuration ends, only unset those INPUT variables
whose corresponding FEATURE_foo variable has been manually toggled in
CMakeCache.txt or via an IDE.

Toggling a FEATURE_foo manually is intentional, which means the
INPUT_foo value should be discarded. Whereas pre-existing INPUT_bar
variables will persist, thus not breaking cases like the -no-opengl
report CONDITION.

Amends 2799391703e44a34b6557e234462e425a61785f2

Pick-to: 6.6
Fixes: QTBUG-116973
Task-number: QTBUG-112957
Change-Id: I5851255bfa41a9a1d116630a5d9f7b9a74aa93ed
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
2023-09-13 20:09:19 +02:00
Alexandru Croitor
4d86ca8c4e CMake: Handle INPUT_foo values when detecting dirty builds
Before this change, the dirty feature code only checked for
differences between FEATURE_foo and QT_FEATURE_foo, without taking
into account modified INPUT_foo values that might passed via the
configure script.
This led to issues in certain scenarios when reconfiguring with the
configure script.

For example configuring with -gui / -DINPUT_gui=ON and then with
-no-gui / -DINPUT_gui=OFF would fail saying
  'Feature "widgets": Forcing to "ON" breaks its condition'

This happens because the widgets feature depends on gui being
available, but because INPUT_gui modifications don't trigger the dirty
feature re-eval code, we don't recompute the value of widgets.

Extract the code that takes into account the INPUT_foo variables into
a separate function, and use it both when computing feature values and
also when detecting dirty features.

This means any non-matching INPUT_foo variables will now also trigger
dirty feature checking.

Use the same function to replace the duplicate code we have to early
initialize the developer-build, no-prefix and pkg-config features.

Pick-to: 6.6
Task-number: QTBUG-112957
Change-Id: I775cf70b48291a659b0fecf7cb9570ec12735bca
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
2023-09-06 17:22:07 +02:00
Alexandru Croitor
2799391703 CMake: Rework INPUT_foo vars handling when reconfiguring
To be able to reconfigure Qt with modified feature values using the
configure script, and take into account INPUT_foo values, we need to
ignore FEATURE_foo values. But we can't always ignore FEATURE_foo
values, because users might want to toggle them by editing
CMakeCache.txt or using an IDE.

What we can do is tell CMake we are configuring via the configure
script, in which case we can mostly be sure that any passed
INPUT_foo values should have higher priority than pre-cached
FEATURE_foo values.

We also need to remove all the cached INPUT_foo variables after they
have been used for feature computation, so that subsequent
reconfigurations where an INPUT_foo is not passed anymore, doesn't
cause a feature to accidentally reuse the previous (stale) value.

Pass -DQT_INTERNAL_CALLED_FROM_CONFIGURE=TRUE to CMake when configuring
via the configure script, and use that as a marker to make INPUT_foo
values have a higher priority.
This needs to be done centrally in qt_evaluate_feature and also in a
few more locations where we check INPUT_ values, like the developer
build and pkgconfig features.

Because QT_INTERNAL_CALLED_FROM_CONFIGURE would become a cached
variable, we want to remove it at the end of the configuration phase,
so that future 'cmake .' reconfigurations are not considered to be done
via configure.
To do that, we unset it right at the end of
qt_build_repo_end in a per-repo build, and in the final
qt_print_build_instructions call in a top-level build.
The latter needs a cleaner fix in follow up commits in qt5.git and
qtbase.

Pick-to: 6.6
Task-number: QTBUG-112957
Change-Id: I3fd338092041ef09e3f5a4dfbaf61da5deea0514
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
2023-09-06 17:22:07 +02:00
Alexandru Croitor
65e04162d1 CMake: Recompute features when dependent features are marked dirty
Before this change, if a user toggled a FEATURE_foo variable, we only
recomputed the value for dependent features who's CONDITION would break
with the new value. If the CONDITION was not broken, the dependent
feature value would remain unchanged.

For example if FEATURE_developer_build was OFF, and the user
toggled it to ON, the FEATURE_private_tests value would remain OFF,
because OFF is a valid value for private_tests' CONDITION.

But we would like FEATURE_private_tests to become ON if we toggled
FEATURE_developer_build to ON.

To address this case, we need to recompute features who's dependent
feature values have changed.

The algorithm introduced by this change is:
- keep track of initial dirty features, aka track when FEATURE_foo is
  different from QT_FEATURE_foo. We expect FEATURE_foo to be the
  variable that a user toggles in the cache file or an IDE.
- when evaluating feature values, collect feature dependencies from
  the various expressions given to options like CONDITION, AUTODETECT
- if any feature dependency is marked dirty, reset the feature value
  to its auto-computed value and mark the reset feature as dirty
- repeat for all feature evaluations

Because feature evaluation is eagerly recursive, we will successfully
reset all features that need resetting.

To ensure against unforeseen breakages, allow disabling this behavior
by configuring with -DQT_NO_FEATURE_AUTO_RESET=ON

Adjust some of the messages to contain more details.

Note that the pre-existing behavior of resetting feature values when
the condition can't be satisfied, stays. For example if
FEATURE_developer_build is OFF and FEATURE_private_tests is manually
toggled to ON, it will reset to OFF
because its condition can't be satisfied (developer_build is still
OFF).

Amends 61943aefd68b7d88c5eb395c4e44d08a94a70ad0

[ChangeLog][Build System] The build system will now try to recompute
configure features when dependent feature values are toggled by the
user.

Pick-to: 6.6
Fixes: QTBUG-96936
Task-number: QTBUG-85962
Task-number: QTBUG-112957
Task-number: QTBUG-116209
Change-Id: Ib627f3675df8a3b08f4936cdc9c51f2d6e15f58c
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
2023-09-06 17:22:07 +02:00
Alexandru Croitor
c1d2356856 CMake: Move dirty feature / dirty build detection into QtFeature.cmake
It makes more sense for it to live next to the other feature code.

Pick-to: 6.6
Task-number: QTBUG-96936
Task-number: QTBUG-85962
Task-number: QTBUG-112957
Task-number: QTBUG-116209
Change-Id: I8438e6fce9deaa5e709e4b0e2e1ea4eb0600a89a
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
2023-09-06 17:22:07 +02:00
Alexandru Croitor
595ac662ed CMake: Pass CMAKE_EXE_LINKER_FLAGS to project-based try_compile
CMake does it for non-project-based try_compile calls if the
CMP0056 policy is set to NEW. That was introduced in CMake 3.2,
thus set it unconditionally.

The use case is to pick up custom -rpath-link paths when
cross-compiling.

Pick-to: 6.4 6.5
Change-Id: I726b90267dd46de116052b5b7f19b9354a568200
Reviewed-by: Dimitrios Apostolou <jimis@qt.io>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2023-03-14 15:55:47 +01:00
Thiago Macieira
caecb17248 CMake: make qt_config_compile_test verbosely indicate missing deps
This alone isn't enough:
  Feature "xcb": Forcing to "ON" breaks its condition:

      QT_FEATURE_thread AND TARGET XCB::XCB AND TEST_xcb_syslibs AND QT_FEATURE_xkbcommon_x11

  Condition values dump:

      QT_FEATURE_thread = "ON"
      TARGET XCB::XCB found
      TEST_xcb_syslibs = "FALSE"
      QT_FEATURE_xkbcommon_x11 not evaluated

But when it says:

-- Performing Test XCB (extensions) - Failed because XCB::CURSOR not found

The user can know what to do.

Pick-to: 6.4
Change-Id: I810d70e579eb4e2c8e45fffd1719c0abf608ed30
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2023-01-18 09:21:20 -07:00
Amir Masoud Abdol
7e82577680 Retire the qt_parse_all_arguments
This replaces the qt_parse_all_arguments macro with the built-in
`cmake_parse_arguments(PARSE_ARGV`. In addition, a new function,
_qt_internal_validate_all_args_are_parsed, can be used to check whether
any _UNPARSED_ARGUMENTS have been passed to the function.

Fixes: QTBUG-99238
Change-Id: I8cee83dc92dc6acdaaf747ea6ff9084c11dc649b
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2023-01-18 14:47:12 +01:00
Alexey Edelev
7f4aa1a3fa Remove perl related functionality from CMake files
Avoid using perl in CMake scripts. Remove the syncqt.pl specific
code.

Task-number: QTBUG-87480
Change-Id: I7fcd5cc83d173ec463c275b5b50b84f25044a118
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2022-11-29 12:35:47 +01:00
Rolf Eike Beer
60829b0b25 CMake: allow user specified boolean values to have any case
When running something like this:

    cmake -D FEATURE_xkbcommon=On qtbase

one would run into issues like:

    CMake Error at cmake/QtFeature.cmake:254 (message):
      Sanity check failed: FEATURE_xkbcommon has invalid value "On"!
    Call Stack (most recent call first):
      cmake/QtFeature.cmake:396 (qt_feature_check_and_save_user_provided_value)
      cmake/QtFeature.cmake:606 (qt_evaluate_feature)
      cmake/QtFeature.cmake:575 (qt_feature_module_end)
      src/CMakeLists.txt:12 (qt_feature_evaluate_features)

Change-Id: I33a921625b97aeb3c423cb7c1fb1bd3b05ce24a7
Pick-to: 6.4 6.3 6.2
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2022-09-05 06:49:34 +02:00
Lucie Gérard
32df595275 Change the license of all CMakeLists.txt and *.cmake files to BSD
Task-number: QTBUG-105718
Change-Id: I5d3ef70a31235868b9be6cb479b7621bf2a8ba39
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
2022-08-23 23:58:42 +02:00
Lucie Gérard
fb1b20eab3 Add license headers to cmake files
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>
2022-08-03 17:14:55 +02:00
Alexandru Croitor
15117f84bb CMake: Relax constraint on not having feature values change
Previously if qtbase was built with feature A set to ON, then building
qtsvg, then rebuilding qtbase with feature A set to OFF, trying to
build qtsvg would fail with an error message at configure time saying
that the feature value has changed.

This check was added quite early in the Qt CMake port, presumably to
catch accidental reconfigures that might cause long rebuilds.

This has dubious benefit though. We constantly had people telling us
they get the error without knowing what to do. The usual advice was to
remove CMakeCache.txt and reconfigure.

Instead of forcing people to suffer this dance, relax the constraint
by issuing a warning instead of an error, and make it more clear why
a rebuild might happen (a changed feature value might change
the generated module C++ header file which in turn might be included
by various project sources).

Amends 20633d97abed0f6025572f87c9359272b4713384

Pick-to: 6.2 6.3 6.4
Fixes: QTBUG-95834
Change-Id: I992bd61024958869f3b995471b4c7ff75e3a33a0
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
2022-08-03 17:14:55 +02:00
Yuhang Zhao
11e6e9bccd CMake: Mark chosen C++ standard as required for building Qt
Change-Id: I7d3187e74251059c7536f3e34d8c87f54c673146
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2022-06-19 14:45:07 +08:00
Allan Sandfeld Jensen
dc3b2ac81d C++23/c++2b support
Change-Id: I33b2a48312ae94e3d5ebb4097e50c4953e14d533
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
2022-06-08 19:43:34 +02:00
Thiago Macieira
38e6b637b7 CMake: add detection of x86 VAES and AVX512VBMI2 features
We have VAES code in qhash.cpp that isn't getting compiled right now.

Change-Id: Ibf4acec0f166495998f7fffd16d6961261dec361
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2022-03-08 00:31:30 -08:00
Pino Toscano
0a41399c2d CMake: enable machine_tuple also on GNU/Hurd
On the Hurd there is the standard GCC toolchain, so it is possible to
query GCC for -dumpmachine.

Change-Id: Idc8e80c0937147a8ea656bc0320a83d647278455
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2022-02-11 00:31:30 +01:00
Alexandru Croitor
158287c726 CMake: Add support building Qt with the 'mold' linker
The mold linker is a new linker for Linux that provides faster link
times compared to BFD ld, ld.gold and lld.

It can be found at https://github.com/rui314/mold

To build Qt with mold, ensure that the binary in your PATH and then
configure Qt with with either

 cmake /path/to/qtbase -DINPUT_linker=mold

or

 /path/to/qtbase/configure --linker mold

The change was tested with gcc 9, clang 10, clang 12, mold
1.0.0. Only qtbase and qtdeclarative (and dependencies) were tested.

Pick-to: 6.2 6.3
Task-number: QTBUG-99270
Change-Id: I2e64a1f4257c37ff5b64a9326e548b9b46e07c80
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
2022-01-20 19:01:27 +01:00
Alexandru Croitor
d6066d53fa CMake: Fix detection of linker availability
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>
2022-01-18 14:28:57 +01:00
Allan Sandfeld Jensen
f370a4c49c Support configure -platform linux-clang-libc++
Detect libc++ config and add appropriate compiler and linker flags.

Pick-to: 6.3
Change-Id: I9ec91b3ace987599d4e79e43b1b75aa67cd5caeb
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-12-14 20:04:43 +01:00
Joerg Bornemann
8b09c9d690 CMake: Fix config tests not finding module-provided CMake packages
This amends commit 165e01d5d51d16377542c1b3ffbc22f03fb75e97.

Above commit broke the code that adds "${PROJECT_SOURCE_DIR}/cmake" to
CMAKE_MODULE_PATH.  The semicolon that separates entries of
CMAKE_MODULE_PATH must be escaped.  Otherwise, the semicolon separates
elements of the flags list.

Additionally, fix the QT_AVOID_CUSTOM_PLATFORM_MODULES code path which
lacked the addition of "${PROJECT_SOURCE_DIR}/cmake".

Pick-to: 6.2
Change-Id: I72f78cf066cabe6b0002dce1aa0294aa0dc9cbf0
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-10-13 00:50:03 +02:00
Joerg Bornemann
f19668ce65 Don't use libs in /usr/local for configure tests by default on macOS
Since commit f3c7d22dd04afe8d889585fb5d6426f3d4591e74 we do not use
libraries from /usr/local and other non-system locations on macOS.  But
our configure tests still did.  This led to discrepancies between
find_package calls in configure tests and the Qt project itself.

Mentioned commit removed /usr/local and friends from
CMAKE_SYSTEM_PREFIX_PATH.  But we can't pass this variable to the
configure tests, because CMake sets it up and overwrites our value.

Pass CMAKE_SYSTEM_PREFIX_PATH and CMAKE_SYSTEM_FRAMEWORK_PATH as
QT_CONFIGURE_TEST_CMAKE_SYSTEM_{PREFIX|FRAMEWORK}_PATH variables to
tests.

Tests with separate project files that call find_package() must add code
like this after the project() command:

if(DEFINED QT_CONFIGURE_TEST_CMAKE_SYSTEM_PREFIX_PATH)
    set(CMAKE_SYSTEM_PREFIX_PATH
        "${QT_CONFIGURE_TEST_CMAKE_SYSTEM_PREFIX_PATH}")
endif()
if(DEFINED QT_CONFIGURE_TEST_CMAKE_SYSTEM_FRAMEWORK_PATH)
    set(CMAKE_SYSTEM_FRAMEWORK_PATH
        "${QT_CONFIGURE_TEST_CMAKE_SYSTEM_FRAMEWORK_PATH}")
endif()

Adjust pro2cmake accordingly.

Task-number: QTBUG-97076
Change-Id: Iac1622768d1200e6ea63be569eef12b7eada6c76
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-10-08 23:15:31 +02:00
Joerg Bornemann
165e01d5d5 CMake: Ensure that UNIX is set for INTEGRITY
Certain platform-related variables, in this case UNIX, must be set in a
platform module, because they get cleared after the toolchain file is
loaded.  Such platform modules live in upstream CMake, but there is none
yet for INTEGRITY.  This manifests in an undefined UNIX variable and
"System is unknown to CMake" warnings for the project and every
configure test.

Add the CMake module "Platform/Integrity" in the cmake/platforms
directory.  Add this directory to CMAKE_MODULE_PATH to let CMake load
Platform/Integrity when the toolchain file set CMAKE_SYSTEM_NAME to
"Integrity".

CMake's module directory takes precedence, when loading platform
modules.  This is special for platform modules and different from the
documented behavior of CMAKE_MODULE_PATH and include().

In case the user wants to provide their own platform modules via
CMAKE_MODULE_PATH, they can instruct Qt to not add its path by setting
QT_AVOID_CUSTOM_PLATFORM_MODULES to ON.

Make sure that configure tests with project files also load the custom
platform module.

Pick-to: 6.2
Fixes: QTBUG-96998
Change-Id: I9855d620d24dc66353cec5e847a2675b464ace26
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-10-05 19:35:47 +02:00
Joerg Bornemann
5ef0e3435e Fix separate_debug_info configure test for cross-compilation
The separate_debug_info configure test uses the CMake variable
CMAKE_OBJCOPY.  CMakeFindBinUtils in the test project finds the host's
objcopy despite CMAKE_TOOLCHAIN_FILE being correctly set.

We now add CMAKE_OBJCOPY to the list of variables that are passed to
configure test projects and remove the CMakeFindBinUtils include, which
looks rather internal anyways.

Pick-to: 6.2
Fixes: QTBUG-96798
Change-Id: I164c6bd1771e8789e9dd19b50573b33b8866bd3b
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-09-28 15:59:31 +02:00
Alexey Edelev
68ad67b6fa Use only supported values when setting internal QT_FEATURE_ values
When setting QT_FEATURE_ values we need to convert the user-provided
FEATURE_ values to the one that is supported by QT_FEATURE_.

Pick-to: 6.2
Fixes: QTBUG-96300
Change-Id: Idd19fbf7f23f351a6c1cfdcedccfaaf6b0aa6e44
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
2021-09-21 16:05:22 +02:00
Allan Sandfeld Jensen
129dae5dbd Pass CMAKE compiler flags to arch detection
This fixes the detection of always available architecture based on
user set CMAKE flags.

Change-Id: I541ac9569766a0fe05f4395c06f2ee3bcd77b035
Fixes: QTBUG-91090
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-09-20 13:19:02 +02:00
Alexandru Croitor
d806ce6fc5 CMake: Properly export MODULE_PLUGIN_TYPES
Don't export the MODULE_PLUGIN_TYPES property only when a module has
an associated configure.cmake file with features. Instead, always
export it if a module defines a plugin type.

This fixes qttools DesignerTargets.cmake file to contain the plugin
types it defines, given that the Designer lib does not declare any
features via a configure.cmake file.

Pick-to: 6.2
Task-number: QTBUG-95668
Change-Id: Ic036c31768e03b51d3bce9c2afe48e04f69f435b
Reviewed-by: Michal Klocek <michal.klocek@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-08-26 11:36:27 +00:00
Joerg Bornemann
eafbda4191 CMake: Fix feature evaluation for feature defines
Passing -DFEATURE_developer_build=TRUE did not add the define
QT_BUILD_INTERNAL to src/corelib/global/qconfig.h like
-DFEATURE_developer_build=ON would.

This happened, because the feature evaluation in
qt_evaluate_feature_definition did a string comparison against "ON".

Normalize both sides of the string comparison, and thus support all
booly values for features.

Pick-to: 6.2
Fixes: QTBUG-95732
Change-Id: Ibf03579c05919b35219438361fc93676b7cca7cc
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-08-17 09:23:40 +02:00
Joerg Bornemann
b43afd5315 CMake: Make precompiled headers work for Android on Windows
When building Qt for Android on Windows, the precompile_headers test
failed if the source directory was passed as absolute path without drive
letter.  See CMake upstream issue #22534.

Work around the CMake issue by ensuring that the path is properly
prefixed with a drive letter.

Pick-to: 6.2
Fixes: QTBUG-95652
Change-Id: I3154b6c0bb2f53533306227074b24fbbf5973b05
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-08-17 01:36:22 +00:00
Joerg Bornemann
564f07086c Don't repeat conditions of use_*_linker features in QtFeature.cmake
qt_config_linker_supports() repeated the conditions of all use_*_linker
features, because the features are not evaluated yet when this function
is called, and the function needs to know what linker is used to build Qt.

Move the required tests and features before any
qt_config_linker_supports() call and evaluate the use_*_linker features
early.

Change-Id: I306f032356682a0e82e4d7c4234e5bbc820ab143
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-07-13 15:27:23 +02:00
Alexandru Croitor
451733bd57 CMake: Fix reconfiguration error when features have EMIT_IF conditions
Previously, if a feature was marked as not to be emitted and there was
no user provided value for that feature, the build system would still
save the user provided value in FEATURE_foo with a value of ON (if the
conditions were met).

After a reconfiguration, the build system would hit the code path that
checks if the user provided a value for the non-emitted feature, and
would then warn about it and reset the feature value to OFF.

This would cause errors when reconfiguring a user project, complaining
that a feature value has changed.

Make sure to not save the user provided value for a non-emitted
feature and to always set its internal feature value to OFF.

Amends c4f5762b20dc20bab3cc62e9166d0e5b36e21cc6

Pick-to: 6.2
Fixes: QTBUG-94921
Change-Id: I257c7fd795c8a6aeba3348cb72522e4f0b006dc9
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2021-07-09 12:44:35 +02:00
Alexandru Croitor
cde126ef26 CMake: Rename and document the feature evaluation functions
Rename various functions and variables to hopefully make the behavior
of feature evaluation clearer.

The previous names like 'set_value' or 'set_cache_value' or 'cache'
were too generic and unclear. One would have to carefully read the
code to understand what was actually set.

Add some doc comments about what FEATURE_foo and QT_FEATURE_foo
represent.

Amends c4f5762b20dc20bab3cc62e9166d0e5b36e21cc6

Pick-to: 6.2
Task-number: QTBUG-94921
Change-Id: Ie6a7b83a4d54a83976b2706d4af82b39832d79f1
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2021-07-09 12:44:35 +02:00
Alexey Edelev
4e901a2f99 Add the check for linker capabilities to resolve circular dependencies
'ld' only capable to resolve circular dependencies by wrapping the
suspected static libraries and objects using --start/end-group
arguments. We want to detect if linker is 'ld' at configure time to
decide how to link the resource objects if finalizers are not enabled.

The qt_config_compile_test function is extended with an extra argument
since it's required to pass custom cmake flags to the ld-related test.

Pick-to: 6.2
Change-Id: I484fcc99e2886952d8b0232f37e4e6a35d072931
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-06-10 15:17:55 +02:00
Alexandru Croitor
42eb1e4aa6 CMake: Allow printing config summary even if module is not built
In the future it might be useful to print the config summary entries
of a Qt module configure.cmake file even if the associated module
is not built and thus qt_feature_module_begin is not called.

The repo src/CMakeLists.txt could then use a combination of
qt_feature_evaluate_features and a conditional
qt_feature_record_summary_entries to ensure the that summary entries
are still shown.

Change-Id: I124efc82163ddae48d9e72c70a677ec4c6588fac
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2021-06-01 02:49:41 +02:00
Alexandru Croitor
659817e287 CMake: Fix building multi-arch universal macOS Qt
Use the same approach we use for iOS, which is to set multiple
CMAKE_OSX_ARCHITECTURES values and let the clang front end
deal with lipo-ing the final libraries.

For now, Qt can be configured to build universal macOS libraries by
passing 2 architectures to CMake, either via:

  -DCMAKE_OSX_ARCHITECTURES="x86_64;arm64"

or

  -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64"

Currently we recommend specifying the intel x86_64 arch as the first
one, to get an intel slice configuration that is comparable to a
non-universal intel build.
Specifying the arm64 slice first could pessimize optimizations and
reduce the feature set for the intel slice due to the limitation
that we run configure tests only once.

The first specified architecture is the one used to do all the
configure tests.

It 'mostly' defines the common feature set of both architecture
slices, with the excepion of some special handling for sse2 and
neon instructions.

In the future we might want to run at least the Qt architecture config
test for all specified architectures, so that we can extract all the
supported sub-arches and instruction sets in a reliable way.

For now, we use the same sse2 hack as for iOS simulator_and_device
builds, otherwise QtGui fails to link due to missing
qt_memfill32_sse2 and other symbols.

The hack is somewhat augmented to ensure that reconfiguration
still succeeds (same issue happened with iOS). Previously the sse2
feature condition was broken due to force setting the feature
to be ON. Now the condition also checks for a special
QT_FORCE_FEATURE_sse2 variable which we set internally.

Note that we shouldn't build for arm64e, because the binaries
get killed when running on AS with the following message:

  kernel: exec_mach_imgact: not running binary built against
  preview arm64e ABI.

Aslo, by default, we disable the arm64 slice for qt sql plugins,
mostly because the CI provisioned sql libraries that we depend on only
contain x86_64 slices, and trying to build the sql plugins for both
slices will fail with linker errors.
This behavior can be disabled for all targets marked by
qt_internal_force_macos_intel_arch, by setting the
QT_FORCE_MACOS_ALL_ARCHES CMake option to ON.
To disble it per-target one can set
QT_FORCE_MACOS_ALL_ARCHES_${target} to ON.

Task-number: QTBUG-85447
Change-Id: Iccb5dfcc1a21a8a8292bd3817df0ea46c3445f75
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2021-04-01 18:14:59 +02:00