Commit Graph

70 Commits

Author SHA1 Message Date
Alexandru Croitor
9bcabd71a7 By default don't try to use pkg-config when targeting Android
It causes issues in our Windows CI, because the strawberry perl
pkg-config is found. And even that one is unusable, due to a bug in
CMake which is tracked at
https://gitlab.kitware.com/cmake/cmake/-/issues/21239

Change-Id: I58816195d35459e8a44c923399c35a4956c222a2
Reviewed-by: Simon Hausmann <hausmann@gmail.com>
2020-09-28 15:48:17 +02:00
Alexandru Croitor
75c4fd52d1 CMake: Regenerate configure.cmake files
Change-Id: I844e82b4655cf1967b16a7785b4e1ef777e61c22
Reviewed-by: Simon Hausmann <hausmann@gmail.com>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
2020-09-15 15:55:47 +02:00
Joerg Bornemann
96bdcdacbc CMake: Implement configure -ltcg
This configure switch sets the CMake variable
CMAKE_INTERPROCEDURAL_OPTIMIZATION_<CONFIG> per release config to ON.

The feature 'ltcg' is enabled if any of the variables
CMAKE_INTERPROCEDURAL_OPTIMIZATION,
CMAKE_INTERPROCEDURAL_OPTIMIZATION_<CONFIG> are ON.

In order to implement the check, configurejson2cmake had to be extended
to be able to write extra CMake code before and after the feature
definition. This extra code can be added to a feature mapping below the
keys "cmakePrelude" and "cmakeEpilogue".

Task-number: QTBUG-85373
Change-Id: Ia2eb907edcf087f137977a9b090705397f83eb05
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
2020-09-11 11:30:56 +02:00
Joerg Bornemann
069fc33e8a Remove the -no-compile-examples configure switch
If '-make examples -no-compile-examples' was specified, sources of Qt's
examples would be installed, but the examples would not be built.

This switch has always been a source for confusion and is only
interesting for distributors, who can just package the examples
directory tree.

Change-Id: I0291d70e4951d98b553a4abf217db49d05316d3a
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
2020-09-11 00:40:46 +02:00
Assam Boudjelthia
ff1a44be33 Android: don't use avx and avx2 when building for Android x86_64
The Android build for x86_64 fails with CMake. It should also fail with
qmake builds but the current multi-ABI build is testing the feature for
arm64-v8a only.

In [1], it's stated that AVX and AVX2 are not supported on x86_64 ABI.

[1] https://developer.android.com/ndk/guides/abis#86-64

Task-number: QTBUG-85982
Change-Id: I20c9366bdee2a13ca554ec67f5d0c041bd068b91
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-09-10 18:29:05 +03:00
Joerg Bornemann
721812c5d2 CMake: Implement configure -gdb-index
Change-Id: Iea0fb99297751b1baf830a416ea5041d0b9a3b63
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-08-23 11:05:01 +02:00
Joerg Bornemann
4306fc019a CMake: Fix detection of the 'debug' feature
The debug feature for the CMake build is solely determined by the value of
CMAKE_BUILD_TYPE or CMAKE_CONFIGURATION_TYPES. There is no point in
restricting the autoDetect expression to developer builds or MSVC and
macOS builds.

User-visible result: -DCMAKE_BUILD_TYPE=Debug now actually turns the
'debug' feature on, also for non-developer builds on Linux.

Change-Id: I65c92575c9483bff16beb78b60606c55aeadcece
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-08-23 11:04:55 +02:00
Joerg Bornemann
7e7c9ba455 CMake: Support configure tests of type 'linkerSupportsFlag'
Task-number: QTBUG-86155
Change-Id: I3764d99cd4ad1c432b499ec9ba7c4c48391fa421
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-08-23 11:04:46 +02:00
Joerg Bornemann
48cf015906 CMake: Implement configure -optimize-size
This configure switch controls the feature 'optimize_size'.

This isn't merely a mapping to CMAKE_BUILD_TYPE=MinSizeRel, because
we potentially want to combine -optimize-size with -force-debug-info,
which maps to CMAKE_BUILD_CONFIG=RelWithDebInfo.

Task-number: QTBUG-85373
Change-Id: I1a9343ebc54816f52e90e9d33ea3df4c99b1ec9f
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-08-23 11:04:42 +02:00
Joerg Bornemann
729d102b1c CMake: Implement configure -optimize-debug
Task-number: QTBUG-85373
Change-Id: I3aba1fcf96e36544dd75a5e6adc5f770a9a45726
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-08-20 17:07:53 +02:00
Joerg Bornemann
2f1a55c0b1 CMake: Implement configure -linker [bfd,gold,lld]
Fixes: QTBUG-86155
Change-Id: I5ba2d3b52d9ca240b48904c492f7902a056c0292
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-08-20 17:07:49 +02:00
Joerg Bornemann
df28355981 CMake: Support configure tests of type 'compilerSupportsFlag'
Task-number: QTBUG-86155
Change-Id: Iaa5c48b6508870a0f6afdf9df66cd2e634fe19b3
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-08-20 17:07:46 +02:00
Joerg Bornemann
5f729da74a CMake: Implement configure -qreal <type>
The configure argument -qreal <type> maps to the CMake argument
-DQT_COORD_TYPE=<type>.

Fixes: QTBUG-83325
Change-Id: I94970f31ccfb241b1dd4f1d9b6cef25d6684dc05
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-08-19 08:28:50 +02:00
Joerg Bornemann
f4f4557835 Remove Qt 5.1 binary-compatibility warning
There's no way that Qt 6 will be binary-compatible with Qt 5.1.

Change-Id: Ic1abfbdc8dc497dcb24494a8f3e2d96bcf27ef83
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-08-18 12:55:38 +02:00
Alexandru Croitor
3c52f8af9d CMake: pro2cmake: Specify library versions for 3rd party libraries
If certain 3rd party libraries have a version that's not suitable for
Qt, the configure summary should say so, rather than use them and fail
at build time.

With the current situation, we have to duplicate the version
information from the configure.json files in helper.py, by assigning
the version number as an extra find_package variable.

Rerunning configurejson2cmake then embeds this version info into the
qt_find_package calls in configure.cmake.

Some of the Find modules are rewritten to take the  specified version
into account when looking for the libraries.
This involves moving around the code for creating a target, after
calling find_package_handle_standard_args() so we know if a good
enough version was found.

Task-number: QTBUG-82917
Change-Id: I139748d8090e0630cda413362760034dc3483e11
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-08-10 11:56:54 +02:00
Joerg Bornemann
79fda7a549 Make -qtlibinfix affect the names of plugins by default
In Qt5, the -qtlibinfix option did not affect the naming of plugins,
unless -qtlibinfix-plugins was set. This option was added in
5641650993 to offer a way to have -qtlibinfix affect the plugin names
without changing the default behavior. We now remove the
-qtlibinfix-plugins option, as the old behavior is not desirable.

[ChangeLog][configure] The -qtlibinfix option now affects the names of
plugins. The -qtlibinfix-plugins configure option was removed.

Task-number: QTBUG-15192
Fixes: QTBUG-85439
Change-Id: I96f5c2577b76274929c431621967df0e9b4631b7
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-07-13 20:30:18 +02:00
Joerg Bornemann
943340222e CMake: Generate qdevice.pri when cross-building
This adds the CMake equivalent to the classical -device-option key=value
configure argument:
-DQT_QMAKE_DEVICE_OPTIONS=key1=value1[;keyN=valueN]
The keys and values get dumped verbatim into qdevice.pri.

This patch also ports the machineTuple configure test. Its result is
written into qdevice.pri as value for the GCC_MACHINE_DUMP variable.

Change-Id: I29f2323fd87639fafaed99ec7446c7ee75504705
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-06-29 12:47:59 +02:00
Alexandru Croitor
7e03bc39b8 CMake: Improve sanitizer detection
The change fixes the labels to show up correctly in the configure
summary.
It also allows enabling the sanitizer via the feature flags, e.g.
-DFEATURE_sanitize_address=ON.
Finally the qtbase sanitizer option is saved in QtBuildInternalsExtra
so that repos built after qtbase have the same sanitizer options
enabled.

Change-Id: Ic9d9e3ce3c7ebbc244ced2e6d163d1ac8ee06b12
Fixes: QTBUG-84721
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-06-15 18:41:35 +02:00
Alexandru Croitor
a08bf7f00a CMake: Fix usage of gc_binaries feature
The qt_internal_apply_gc_binaries function should apply both compile
and link flags, not just link flags.

The flags should be applied publically to all consumers of Bootstrap
regardless if the gc_binaries feature is enabled.

The flags should be applied publically to Core only in case if the
feature is enabled (aka for static builds only).

Change-Id: Id42af0d9b527004d74c04eff2c9e3c2be1e76aac
Fixes: QTBUG-84461
Task-number: QTBUG-83929
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
2020-06-12 22:34:12 +02:00
Oliver Wolff
45b0f1be68 Remove winrt
Macros and the await helper function from qfunctions_winrt(_p).h are
needed in other Qt modules which use UWP APIs on desktop windows.

Task-number: QTBUG-84434
Change-Id: Ice09c11436ad151c17bdccd2c7defadd08c13925
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2020-06-06 20:25:49 +02:00
Alexandru Croitor
71e3b04282 CMake: Regenerate rest of configure.cmake files
Change-Id: I17cca57c18f33d4283eb6009ba4c5ebb0c1847c3
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
2020-05-29 23:23:06 +02:00
Joerg Bornemann
759da6742a CMake: Generate information about 3rdparty libs in module .pri files
For modules that are not yet ported to CMake and that use
   QMAKE_USE += libfoo
we need to provide the information about libfoo in the qt_lib_XXX.pri
files.

Also, we now generate qt_ext_XXX.pri files for bundled 3rdparty libs.

Task-number: QTBUG-75666
Change-Id: I9e4b057a197554ecb37c294c0bf09e2a2b3aa053
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-05-19 13:26:53 +02:00
Lars Knoll
7ea6cee525 Don't enable -headerclean by default even for developer builds
The CI system can test this, but there's little reason to blow
up every developers compile time by 30%.

Change-Id: I7677b0411103fb1301ad087c884cc9bd22a5aee2
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-05-14 19:16:33 +02:00
Joerg Bornemann
4545eadd3e CMake: Port the 'static_runtime' feature
This feature is Windows-only and must be turned on manually.
For MSVC it sets the MSVC_RUNTIME_LIBRARY target property.
For MinGW it adds the -static linker flag.

Change-Id: I9da3b88d545b34bc34a3a80301b2dd1b5986fa88
Reviewed-by: Leander Beernaert <leander.beernaert@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-04-23 10:09:15 +02:00
Joerg Bornemann
2a0585e7cb CMake: Port the 'pkg-config' feature
Change-Id: If571208aaaba8c1d0af834e8ae11869872d42135
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Leander Beernaert <leander.beernaert@qt.io>
2020-04-21 09:01:39 +02:00
Joerg Bornemann
3eed6d76b7 CMake: Port the 'ccache' feature
This maps to the CMake variable QT_USE_CCACHE.

Change-Id: I3258027301284d907f6ecde6c65d2c0dde8f0a11
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-04-17 23:10:11 +02:00
Joerg Bornemann
8a5ffc4f73 CMake: Port the 'ltcg' feature
This maps to the CMake variable CMAKE_INTERPROCEDURAL_OPTIMIZATION.

Change-Id: Id0ce48f176b95c27e74ab80276e89503b1660f79
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-04-17 23:10:09 +02:00
Joerg Bornemann
9b45ca7411 CMake: Port the 'cross_compile' feature
Change-Id: Iccd1d55e95797740a4a8689462ce9ab1e49a62c1
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-04-17 20:42:42 +02:00
Alexandru Croitor
67ee92f4d8 CMake: Handle automatic rpath embedding correctly
Instead of using CMAKE_INSTALL_RPATH to embed an absolute path
to prefix/libdir into all targets, use the more sophisticated aproach
that qmake does.

For certain targets (modules, plugins, tools) use relative rpaths.
Otherwise embed absolute paths (examples, regular binaries).
Installed tests currently have no rpaths.

On certain platforms rpaths are not used (Windows, Android,
iOS / uikit).

Frameworks, app bundles and shallow bundles should also be handled
correctly.

Additional rpaths can be provided via QT_EXTRA_RPATHS variable
(similar to the -R option that configure takes).

Automatic embedding can be disabled either via QT_FEATURE_rpath=OFF
or QT_DISABLE_RPATH=ON.

Note that installed examples are not relocatable at the moment (due
to always having an absolute path rpath), so this is a missing feature
compared to qmake. This is due to missing information on where
examples will be installed, so a relative rpath can not be computed.

By default a Qt installation is relocatable, so there is no need to
pass -DQT_EXTRA_RPATHS=. like Coin used to do with qmake e.g. -R .

Relative rpaths will have the appropriate 'relative base' prefixed
to them (e.g $ORIGIN on linux and @loader_path on darwin platforms).
There is currently no support for other platforms that might have a
different 'relative base' than the ones mentioned above.

Any extra rpaths are saved to BuildInternalsExtra which are re-used
when building other repositories.

configurejson2cmake modified to include correct conditions for the
rpath feature.

It's very likely that we will need a new qt_add_internal_app()
function for gui apps that are to be installed to prefix/bin.
For example for Assistant from qttools. Currently such apps
use qt_add_executable().
The distinction is necessary to make sure that relative rpaths are
embedded into apps, but not executables (which tests are part of).

Amends e835a6853b

Task-number: QTBUG-83497
Change-Id: I3510f63c0a59489741116cc8ec3ef6a0a7704f25
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-04-17 15:59:25 +02:00
Joerg Bornemann
067ae2df45 CMake: Port the 'static' feature
Now that we have the 'shared' feature implemented we can easily port
the 'static' feature.

Change-Id: Ia9b54b68d532d73c3d62d12a86c9e8b83e7909c8
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-04-06 21:42:53 +02:00
Alexandru Croitor
34c7344e2a CMake: configurejson2cmake: Port precompile_header feature
We don't need the test, we can just check the value of BUILD_WITH_PCH
to know whether the feature is enabled.

Regenerate configure.cmake files.

Change-Id: I5691a22af2913bc398f99825e0c41cf2daf5a587
Reviewed-by: Leander Beernaert <leander.beernaert@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-04-06 11:00:53 +02:00
Alexandru Croitor
560e8547b3 CMake: Report which qt parts will be built by default
Like libs, tools, examples, tests. Built by default means
they are part of the default make / ninja target.

Change-Id: I304e5724fc5dbd39626e9d589a6e1e92a4dd7882
Reviewed-by: Leander Beernaert <leander.beernaert@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-04-02 09:39:31 +02:00
Joerg Bornemann
7909de1beb CMake: Define QT_STATIC for static builds
QT_STATIC must be defined for static builds to have the right
import/export symbol macros defined. Originally, this macro is wrapped
in a condition. That's why we extend qt_feature_definition to be able
to write a prerequisite to qconfig.h.

Change-Id: I610e60acc7f5bdc031eff6d53a76e0b229a5c8c2
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-04-01 21:19:35 +02:00
Joerg Bornemann
c20f23e03b CMake: Port the 'rpath' feature
This is needed for qmake mixing.

Change-Id: I368169606606a8de4dc8f2db5b98660a0a2fa349
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Leander Beernaert <leander.beernaert@qt.io>
2020-04-01 21:19:32 +02:00
Leander Beernaert
8dcf7d2674 CMake: Add support for bundled SQLite library
Change-Id: I4d3f6e3bf04eb2fcf337e2c5dbc04b6e6f8ebe0b
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-03-25 13:52:05 +01:00
Joerg Bornemann
7e4361ffbd CMake: "Port" the c89, c99 and c11 features
We can ignore the tests for those features and directly ask CMake
whether the compiler supports the respective language version.

Change-Id: I31cd35493443fea0c6d0b0a5e641768c3bcbe736
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-03-23 16:42:59 +01:00
Alexandru Croitor
3c7c60e322 cmake: Regenerate projects
Change-Id: I0cd4f34b0df0227789805f30f474ff6aa275078f
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2020-03-16 17:58:00 +01:00
Tor Arne Vestbø
77885f8402 cmake: Remove APPLE prefix from platform names
None of the other platforms have it.

Change-Id: Ib448c2c03ba03f711b507ef391977c0e6aa7c192
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-03-16 17:57:56 +01:00
Alexandru Croitor
d0400b1cb8 CMake: Disable framework builds on macOS when target config is Debug
This prevents Coin from trying to automatically enable the framework
feature when no configuration is specified on the command line.

By default if no configuration is specified, and there's a .git
subfolder, "Debug" will be the chosen config, and that would conflict
with the framework feature, which would cause configuration to fail.

Change-Id: Ia9db3e8178794737692307b4662a2e77cc574ccd
Reviewed-by: Leander Beernaert <leander.beernaert@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
2020-03-09 23:09:12 +01:00
Alexandru Croitor
1253a02dc0 CMake: Regenerate configure.cmake files to get reports
Change-Id: Ifa1646c7e471b3eaba552498ee1dc24f6ab864de
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-03-09 23:09:02 +01:00
Joerg Bornemann
d0911d0a92 CMake: Port the 'separate_debug_info' feature
For this, we have to uninline the separate_debug_info configure test,
because supporting the conversion of this in configurejson2cmake is not
worth the hassle.

Separate debug information can be turned on for a target by calling the
function qt_enable_separate_debug_info. For Qt's shared libraries and
tools separate debug information is generated if the
'separate_debug_info' feature is manually turned on.

Change-Id: Ic2ffc15efef3794dc0aa42f3d853ef6d651a751c
Reviewed-by: Leander Beernaert <leander.beernaert@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-03-06 13:38:37 +01:00
Joerg Bornemann
a3d0ef019a CMake: Fix condition of the 'debug' feature
For the moment, in feature conditions that use STREQUAL, the lhs must be
a variable.

Change-Id: I56fe24baeb8067662ea81984fd48383da4c5b67b
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-03-06 13:38:13 +01:00
Joerg Bornemann
b99321b78b CMake: Port the 'force_debug_info' feature
This feature is read-only and is ON if CMAKE_BUILD_TYPE is RelWithDebInfo
or if that value is in CMAKE_CONFIGURATION_TYPES.
It mainly exists for the qmake support.

Change-Id: I25cb57e832dcfcab100834a104b1a3d34f01086b
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-03-05 07:48:11 +01:00
Joerg Bornemann
46a2366d12 CMake: Port the 'debug_and_release' feature
This feature is read-only. It's controlled by the multi-config feature
of CMake. It mainly exists for the qmake support.

Change-Id: I322459598fe92568eda4d42319ded444537e95d4
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-03-05 07:48:06 +01:00
Joerg Bornemann
20410cdc11 CMake: Port the 'shared' feature
This feature is read-only and supposed to be set by BUILD_SHARED_LIBS.
It mainly exists for the qmake support.

Change-Id: I722b0de53211d0aab1924e45a77120c890f31f50
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-03-05 07:48:01 +01:00
Joerg Bornemann
becbd07f55 CMake: Port the 'debug' feature
This feature is read-only and supposed to be set by variables like
CMAKE_BUILD_TYPE. It mainly exists for the qmake support.

Change-Id: Ic7e32cbda0f3c2d92dd446b07a3bf1a8d85ec3b9
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-03-05 07:47:56 +01:00
Joerg Bornemann
1a30a82830 CMake: Fix stack-protector-strong test and feature
And in order to do this we must teach qt_config_compile_test a
COMPILE_OPTIONS argument.

Change-Id: I66fa45142b544e3a2fc599af1c1a4c69b442b318
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-03-04 16:31:13 +01:00
Qt Forward Merge Bot
63312fe2ec Merge remote-tracking branch 'origin/5.15' into dev
Change-Id: If36d96c0fef3de5ab6503977501c55c62a2ecc97
2020-03-03 14:13:02 +01:00
Joerg Bornemann
119ffd4781 CMake: Port the reduce-relocations feature
As reduce-relocations implies bsymbolic_functions, we also add the
-Bsymbolic-functions linker flag.
Also, handle the .dynlist files that are passed to the linker by
bsymbolic_functions.prf in the qmake build.

Change-Id: I535c33fba888596d2f8975b16864bbe9f0a7caa4
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2020-02-25 15:47:50 +01:00
Alexandru Croitor
26059d1b9b CMake: Allow building bundled 3rd party libraries in qtbase
A few things are needed to accomplish that:

- the python scripts do not ignore certain system_foo features anymore
  (it is a hardcoded list for now just to be safe)

- configurejson2cmake now outputs
  qt_find_package(WrapSystemFoo) calls for bundled libraries
  (see below)

- the harfbuzz .pro file is modified to accommodate pro2cmake
  not being able to correctly parse some conditional scopes

- the freetype .pro file is modified to make sure linking of the
  library succeeds without duplicate symbol errors, which qmake
  doesn't encounter due to magical exclusion of cpp files that are
  included in other cpp files (presumably for include moc_foo.cpp
  support)

- feature evaluation for Core, Gui, Network now happens in the
  qtbase/src directory, so that bundled libraries can be conditionally
  built

- for each bundled library there are now two FindWrap scripts:
  - FindWrapSystemFoo which finds an installed library in the system
  - FindWrapFoo which either uses the system installed library or
    the built bundled one depending on a condition

- projects that intend to use bundled libraries need to link against
  WrapFoo::WrapFoo instead of WrapSystemFoo::WrapSystemFoo targets
  (this is handled by pro2cmake).
  Unfortunately manually added qt_find_package(WrapFoo) calls might
  still be needed as is the case for WrapFreetype and others.

- a new cmake/QtFindWrapHelper.cmake file is added that provides
  a macro to simplify creation of WrapFoo targets that link against
  a bundled or system library. The implementation is fairly ugly
  due to CMake macro constraints, but it was deemed better than
  copy-pasting a bunch of almost identical code across all
  FindWrapFoo.cmake files.

- a qtzlib header-only module is now created when using bundled
  zlib, to provide public syncqt created headers for consumers
  that need them. These are projects that have
  'QT_PRIVATE += zlib-private' in their .pro files
  (e.g. qtimageformats, qtlocation, qt3d, etc.)
  This is unfortunately needed due to QtNetwork using zlib
  types in its private C++ API.

The change includes support for building the following bundled
libraries:
- zlib
- libpng
- libjpeg
- Freetype
- Harfbuzz-ng
- PCRE2

The following 3rd party libraries are still using an old
implementation within the CMake build system, and should be migrated
to the new one in the near future:
- double-conversion
- Old harfbuzz

The are a few libraries that are not yet ported:
- system-sqlite
- systemxcb
- maybe others

Among other things, this change allows building qtbase on Windows
without requiring vcpkg.

Task-number: QTBUG-82167
Change-Id: I35ecea0d832f66c1943c82e618de4a51440971a5
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Leander Beernaert <leander.beernaert@qt.io>
2020-02-25 15:43:16 +01:00