Commit Graph

2575 Commits

Author SHA1 Message Date
Thiago Macieira
6a89f89946 GCC: Disable the -Wmissing-field-initializers in GCC 4
Perfectly valid C++11 code trying to default-initialize an object with
{} is being warned. GCC 5 and up only warn if you initialize some fields
and not others.

qcborvalue.h:68:25: error: missing initializer for member 'QCborError::c' [-Werror=missing-field-initializers]
     QCborError error = {};
                         ^

Task-number: QTBUG-68889
Change-Id: I6efb28c3145047559ec0fffd1538577de250e283
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Liang Qi <liang.qi@qt.io>
2018-06-18 01:51:37 +00:00
Oswald Buddenhagen
a85fe46753 configure: make splitting of CFLAGS specific to the pkgConfig source
as evidenced by things actually still working despite qmake_use.prf
not processing *_CFLAGS, this is not relevant for any makeSpec sources
any more, and was never relevant for other non-pkgConfig sources to
start with. localizing the code cleans things up.

as a side effect, configure won't emit a notice for dropped flags any
more, but will only log them to config.log. i think that makes sense,
as for the average user that would be only noise anyway.

Change-Id: Iaffde6474b786f5cbcbeac881850792563b74495
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2018-06-15 17:55:49 +00:00
Oswald Buddenhagen
eaa3417901 configure: dequote library sources asap
the json format uses single strings for library sources, as that leads
to less noisy source text. however, this implies the need for de-quoting
and subsequent re-quoting whenever the values are processed. so change
the internal representation to regular qmake string lists as the first
thing when processing the lib source, and re-quote only when outputting
the values.

CFLAGS are excluded, because we'll deal with them differently.

Change-Id: I4ab43d98085ea9f6601fd21ac2afb5bce4f7e2a9
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2018-06-12 10:03:32 +00:00
Liang Qi
096e37910d Merge remote-tracking branch 'origin/5.11' into dev
Conflicts:
	.qmake.conf
	src/corelib/kernel/qeventdispatcher_cf.mm
	src/gui/kernel/qguiapplication_p.h
	src/gui/kernel/qwindowsysteminterface.cpp
	src/gui/kernel/qwindowsysteminterface.h
	src/plugins/platforms/cocoa/qcocoawindow.mm
	src/plugins/platforms/cocoa/qnswindowdelegate.mm
	src/plugins/platforms/ios/qioseventdispatcher.mm
	src/plugins/platforms/windows/qwindowsdrag.h
	src/plugins/platforms/windows/qwindowsinternalmimedata.h
	src/plugins/platforms/windows/qwindowsmime.cpp
	src/plugins/platforms/winrt/qwinrtscreen.cpp

Change-Id: Ic817f265c2386e83839d2bb9ef7419cb29705246
2018-06-07 19:10:53 +02:00
Oswald Buddenhagen
a15de936d0 configure: permit multiple repos to use the same directory names
otherwise, names like "core" are too likely to clash.

note that the directories (which contain configure files) still need to
have unique names within one repository. that's unlikely to be a
problem.

Task-number: QTBUG-68385
Change-Id: I01c60479a6a45494ba60e798ceada231d8870556
Reviewed-by: Michal Klocek <michal.klocek@qt.io>
2018-06-01 10:36:59 +00:00
Oswald Buddenhagen
fc9378952b nuke {tests,examples}_need_tools flags
making the dependencies on tools/ optional was meant to maximize build
parallelization, but it's just too fragile, as nobody ever remembers (or
even knows) about having to add the flags when necessary.

Task-number: QTBUG-68478
Change-Id: I85c0b65d5a63109aedc24bc17eaaaf46b777b634
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2018-05-30 10:57:45 +00:00
Oswald Buddenhagen
00c3418b1e remove support for demos/ directories
no module had one for ages.

Change-Id: Ifb829140e6c97d43e1c8431cb377af8a12231f95
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2018-05-30 10:57:41 +00:00
Liang Qi
f82e508516 Merge remote-tracking branch 'origin/5.11' into dev
Conflicts:
	mkspecs/features/qt_common.prf
	src/corelib/tools/qstring.cpp
	src/plugins/platforms/windows/qwindowsmousehandler.cpp
	src/widgets/widgets/qmainwindowlayout_p.h

Change-Id: I5df613008f6336f69b257d08e49a133d033a9d65
2018-05-24 16:29:14 +02:00
Thiago Macieira
fb0447bc05 Mark Clang 6 as warning-free
Change-Id: I7f8a97595d874145b160fffd152973700c61a0cb
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2018-05-22 14:06:53 +00:00
Liang Qi
7e1b504f31 Merge remote-tracking branch 'origin/5.11' into dev
Conflicts:
	mkspecs/features/qt_module_headers.prf
	tests/auto/widgets/itemviews/qheaderview/tst_qheaderview.cpp
	tests/auto/widgets/kernel/qwidget/BLACKLIST

Change-Id: I2a08952d28d1d0e3d73f521a3d44700ce79ff16c
2018-05-14 14:51:46 +02:00
Christoph Keller
8c029e98bf Fix build of applications on iOS
When QMAKE_TARGET_BUNDLE_PREFIX is set in the .pro file then
this value should be used instead of the default value for
PRODUCT_BUNDLE_IDENTIFIER. Therefore, PRODUCT_BUNDLE_IDENTIFIER
should be set inside default_post.prf so that it can take the
value of QMAKE_TARGET_BUNDLE_PREFIX after it may have been set.

Task-number: QTBUG-66462
Change-Id: Iec1e2a43632efe6021b9d6bfdb78bd941326c456
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-05-13 08:48:53 +00:00
Qt Forward Merge Bot
552c45bea9 Merge remote-tracking branch 'origin/5.11.0' into 5.11
Change-Id: Id6e2acd5e31c1ac858ddf1d8873a6f10694141de
2018-05-09 13:48:42 +02:00
Oswald Buddenhagen
b9a578ebc6 configure: change convention of passing libraries to config tests
instead of pre-resolving them and passing the final LIBS to qmake, pass
raw QMAKE_*_LIBS* assignments and a QMAKE_USE stanza. the immediate
benefit of that is that it centralizes the debug/release lib handling,
which makes build variant overrides available to all libraries, not just
a few selected ones.

note that this removes the CONFIG+=build_all from the test projects.
turns out that this was ineffective to start with, as config tests are
built with an explicit CONFIG-=debug_and_release. we might re-instate it
in a non-broken way later on.

Change-Id: I2117c5b36937e8230bd571dcee83231515cbe30b
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2018-05-08 18:17:29 +00:00
Oswald Buddenhagen
290f953253 configure: centralize shell-quoting of tests' .literal_args field
this de-noises the code somewhat, and makes it possible to eval() the
code generated by $$qtConfLibraryArgs(), which we want to do later.

Change-Id: Ib6101c6745101801e34f8fab1ad6651e624130c7
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2018-05-08 12:50:04 +00:00
Morten Johan Sørvig
60457e6cd0 macOS: Experimental Vulkan support via MoltenVK
Add support for QSurface::VulkanSurface and QVulkanWindow.

Usage:
  1) Build MoltenVK according to instructions
  2) Configure Qt: ./configure -I /path/to/MoltenVK/Package/Release/MoltenVK/include
  3) export QT_VULKAN_LIB=/path/to/MoltenVK/Package/Release/MoltenVK/macOS/libMoltenVK.

Implement support for QSurface::VulkanSurface by enabling
layer mode for QNSView and then creating a CAMetalLayer,
which the MoltenVK translation layer can run on.

MoltenVK provides an implementation of the Vulcan API,
which means that the platform integration is similar
to other platforms: implement a QCocoaVulkanInstance
where we pass the QNSView instance to the vkCreateMacOSSurfaceMVK
Vulkan surface constructor function.

Using Vulkan directly without QVulkanWindow is possible, but not
tested.

We currently load libMoltenVK at run-time and use the
existing QT_VULKAN_LIB environment variable to set its
path. For deployment purposes it would be better to
link against MoltenVK.frameworkm, but this

Task-number: QTBUG-66966
Change-Id: I04ec6289c40b199dca9fed32902b5d2ad4e9c030
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
2018-05-08 11:27:26 +00:00
Oswald Buddenhagen
d5e655f388 fix handling of GENERATED_TESTDATA with CONFIG+=builtin_testdata
relative paths must be resolved against $$OUT_PWD, not $$_PRO_FILE_PWD_.

Task-number: QTBUG-58991
Change-Id: I9ce8e9c78e0fad026a7cc355852d23f9d6e96ee6
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2018-05-07 11:50:33 +00:00
Darrell Walisser
bd52d9d73b android: Add support for precompiled headers
Copied lines from common/g++-base.conf to enable support.

Task-number: QTBUG-51700
Change-Id: Ia2691cb137cac8b1378c5749892c36f0143570c9
Reviewed-by: BogDan Vatra <bogdan@kdab.com>
2018-05-04 10:25:05 +00:00
Oswald Buddenhagen
95b0e4c956 make it possible to override the basename of module config files
using qt$$MODULE isn't enough if the module is composed of submodules
which need the final module's headers, because that would require two
modules having the same module .pri file.

the first thought to fix this was to just use $$lower($$TARGET), but
that breaks for testlib (QtTest). while the config file name isn't
public api, it's included by a public header, so changing it is risky.

so instead stay with the original pattern, but make it explicitly
overrideable.

Change-Id: I758c46ed403620620d577ae16866ce751271b63e
Reviewed-by: Michal Klocek <michal.klocek@qt.io>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2018-05-03 12:59:04 +00:00
Qt Forward Merge Bot
7de400052f Merge remote-tracking branch 'origin/5.11' into dev
Change-Id: Ia082e20e2eb4b76afd4c1a1584ff4e5514655d7a
2018-05-02 13:15:15 +02:00
Mikhail Svetkin
194a404490 Make the use of -fdata-sections and --gc-sections more generic in Qt
Add qmake feature and configure option, which optimze the size of static
exectuable. Use for static build.
Enabled via configure --gc-binaries, or CONFIG += gc-binaries in 3rd party
projects.

Change-Id: I3c25b02caaef6a4afc6019afc9c67122dd11696d
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-04-27 06:47:35 +00:00
Ulf Hermann
67aa365d41 Do emit CMake declarations for existing private headers
We need to make sure we don't emit CMake declarations for private
headers if those headers are absent. However, most of the time we have
private headers and should add them.

Task-number: QTBUG-37417
Change-Id: I639eb93d008de27928dedac540894af70c1883b9
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-04-27 06:43:11 +00:00
Simon Hausmann
388c4ef9f7 Fix build of static plugins with resources with debug-and-release
Writing out the $TARGET_plugin_resources.cpp file in !build_pass breaks
when TARGET is adjusted by $qtPlatformTargetSuffix values. We end up
writing out $TARGET_plugin_resources.cpp but the debug Makefile looks
for $TARGET_debug_plugin_resources.cpp.

Try using the pro file name as name source instead, as suggested by
Ossi.

Task-number: QTBUG-67931
Change-Id: I221cf9b2ec1db699568d0c73513aa66ecf0ada97
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-04-25 13:39:32 +00:00
Oswald Buddenhagen
e46f9d68d8 syncqt: fix CamelCase aliases for injected headers
don't put them into GENERATED_HEADER_FILES, as they obviously cannot be
found in a pre-synced source dir. instead, let the injection code itself
add them to INJECTED_HEADER_FILES.

Task-number: QTBUG-67813
Change-Id: Id2a7c565b14fcba8aba9d1dd8b1dd39c586d0d91
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2018-04-25 10:28:31 +00:00
Oswald Buddenhagen
967bb3f0d8 syncqt: don't write INJECTED_*HEADERS
these are actually redundant with INJECTIONS.

Change-Id: I0a71930401e00d30c9898b4d958de5e89c496d18
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2018-04-25 10:28:22 +00:00
Simon Hausmann
be9a56e5e3 Make it easier to use resources in plugins when using static linking
RCC generates code that registers resources automatically on program
startup via global constructors. When linking statically and nothing
references the symbols in the .o file compiled from the RCC generated
code, then the linker will discard the embedded resources and they will
not get initialized. That is why for static linking it is necessary to
explicitly initialize resources using the Q_INIT_RESOURCE macro.

We can avoid the need for the explicit initialization in the context of
plugins that are statically linked into the application. resources.prf
can generate a .cpp file with a helper function that contains all the
Q_INIT_RESOURCE calls for all resources in the plugin. That helper
function in turn is injected into the plugin entry point, which in turn
is guaranteed to be included in the final binary.

Change-Id: If1abf9c85ef92935020af073b989c58c1ae6ca63
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
2018-04-23 13:56:07 +00:00
Allan Sandfeld Jensen
591edbb11c Detect C standard and try using the most recent one (take 2)
Fixes the default C version used with gcc < 5

Change-Id: I948dece961caed8e6b181e1c6e6b9dc43c46583e
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-04-21 09:05:14 +00:00
Qt Forward Merge Bot
6f45fda50b Merge remote-tracking branch 'origin/5.11' into dev
Change-Id: I0bea38585382b5d9c8d7a013bf6bcb3a6008d159
2018-04-20 21:22:53 +02:00
Tim Uy
30874fb2df qmake: fix sdk resolution on macos
the 'info' variable was re-used too early. make a new one 'infoargs'
instead.

Task-number: QTBUG-67286
Change-Id: I77881ecbfce338d653358c5e5edac84e1c0c7de3
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-04-18 19:10:19 +00:00
Andy Shaw
8caf9e6b18 iOS: Allow building QML based test cases
In order to be able to build and test a testcase on an iOS device it
needs to be a bundle. So the app_bundle config should only be removed if
the testcase_no_bundle is set. This is already done by testcase.prf.

Task-number: QTBUG-45211
Change-Id: I4f16ea832ccff2a5db5fed0050fa0344b4ac9ad6
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-04-18 12:19:31 +00:00
Qt Forward Merge Bot
c8625a3e67 Merge remote-tracking branch 'origin/5.11' into dev
Change-Id: I86f04fc3b2e4291f161a4985adddd6fd6c789d33
2018-04-18 01:00:28 +02:00
Allan Sandfeld Jensen
9f54745362 Use optimize_size instead of duplicating similar logic
The android mkspecs had their own way of doing the same as optimize_size

Change-Id: Id05822df6bdeb8b3aafada2901bd61530c490fe9
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: BogDan Vatra <bogdan@kdab.com>
2018-04-14 17:23:25 +00:00
Lars Knoll
4f158ccee5 Merge remote-tracking branch 'origin/5.11' into dev
Change-Id: I9f802cb9b4d9ccba77ca39428a5cb1afd2d01642
2018-04-12 22:00:35 +02:00
Oswald Buddenhagen
9c4c136bc9 rework syncqt interaction regarding cross-tree paths
instead of relying on more or less accidental qmake behaviors regarding
the base dir for relative paths (esp. if a file does not exist yet),
make everything explicit. to that effect, clearly define the base tree
(source or build) for every syncqt-generated variable, and write only
in-tree relative paths to the variables. on the receiving end, resolve
the paths as soon as headers.pri was read.

Task-number: QTBUG-67111
Change-Id: I32ae5760fb62ebc650fdb69e46aac786a8141564
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2018-04-12 15:42:59 +00:00
Liang Qi
093290a662 Merge remote-tracking branch 'origin/5.11' into dev
Conflicts:
	src/plugins/platforms/ios/quiview.mm

Change-Id: I0fd0adeca1590fffddd577873172f6d987a60412
2018-04-11 09:34:23 +02:00
Oswald Buddenhagen
2c6801cb37 configure: cache test output as well
that way we can create a config.log which is consistent with the end
state even if (some) tests are not executed this time around.

Change-Id: Ia953ede62d6640aab912559f435ceb1f9ec6d9dc
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2018-04-10 18:51:13 +00:00
Oswald Buddenhagen
0e204c7dc4 don't call qmake's exists() with an empty argument
Change-Id: I73330bd1c2de1734c5ac5c668ff9af7e85fc902a
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2018-04-10 18:51:07 +00:00
Qt Forward Merge Bot
e027c7241f Merge remote-tracking branch 'origin/5.11' into dev
Change-Id: I0120f804522c0c652e9537b6e9fe08189f071ed2
2018-04-10 01:00:26 +02:00
Gabriel de Dietrich
3b85d53913 macx-clang: Update informal documentation for xcb build
Remove references to XKB and explain what to do if
pkg-config is missing or unwanted.

Change-Id: I099bf01ff49e1b8f6e822a50f0fe4904965a7a9f
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-04-09 17:55:10 +00:00
Mikhail Svetkin
061fbceb77 qmake: add support for mkspecs which don't support strict_c++
Some mkspecs do not support c++ strict mode.
We should allow them to build Qt with GNU extenstions.

Change-Id: I0d76cf95355b38953e3475773ec5474c856e1370
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-04-05 18:55:46 +00:00
J-P Nurmi
9c4295978e qml_module.prf: add 'install_qml_files' config
Allow QML modules to request installing QML files on the file system
regardless of whether the QML files are embedded to resources.

Qt Quick Controls need both; external QML files, that are prioritized
over compiled resources, can be left out from the final deployment
package.

The desired setup can be configured as follows:

    CONFIG += install_qml_files builtin_resources qtquickcompiler

With this, there is no need to write custom install/copy/qrc rules
for QML files.

Change-Id: I2ff2974b64efaea341b6ebb4c9fc2612497d7a33
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-04-05 08:38:16 +00:00
J-P Nurmi
defe266fd0 qml_module.prf: embed qmldir to resources in static builds only
For "import MyModule", the QML engine looks for a qmldir file in
$eachImportPath/MyModule.

One of the built-in import paths is ":/qt-project.org/imports". This is
meant for static "plugins", where the resources and the plugin are already
inside the binary image.

For dynamic plugins, the qmldir file is what enables the QML engine to
find the plugin in the first place, so it makes no sense to embed it
inside the plugin's resources.

Change-Id: I29f006efb58d91f7e5212c347087535b06e8c637
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-04-05 08:38:08 +00:00
Qt Forward Merge Bot
ffb2c2ac6c Merge remote-tracking branch 'origin/5.11' into dev
Change-Id: I33b47095efdfe0ba698c6a88ca41ec911f432208
2018-03-31 01:00:13 +02:00
Simon Hausmann
84c71207ae Fix debug_and_release builds with CONFIG += qtquickcompiler
For correct debug/ and release/ suffix substitution and thus avoid
concurrent access to generated files, we have to declare the output
directory variable used by qtquickcompiler.prf in qtdeclarative here and
enable it for substitution.

Change-Id: Id8483daffdf1b9990396c55f7bc0d08a2f65cafd
Task-number: QTBUG-66675
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-03-29 23:24:24 +00:00
Liang Qi
794781e7cf Merge remote-tracking branch 'origin/5.11' into dev
Conflicts:
	src/plugins/platforms/cocoa/qnsview.mm
	src/plugins/platforms/cocoa/qnsview_mouse.mm
	src/testlib/testlib.pro

Change-Id: Ia0ce4243418fe6a485b0f290c67bd433b3b04ff2
2018-03-28 08:12:21 +02:00
Friedemann Kleint
dbc983a513 Revert "Detect C standard and try using the most recent"
The change causes a crash when compiling the xkbcommon 3rdparty
library and compile failures (qtimageformats on Android).

This reverts commit a47cb14680.

Task-number: QTBUG-67326
Task-number: QTBUG-67327
Change-Id: I5ddc4eccad699e3eaec535fd6a63d11b0026b42e
Reviewed-by: Sami Nurmenniemi <sami.nurmenniemi@qt.io>
Reviewed-by: Liang Qi <liang.qi@qt.io>
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>
2018-03-26 15:10:33 +00:00
Kevin Funk
02ed1b36da Remove CMake code for CMake < 3.1
This removes the following functions from Qt5CoreMacros:
- qt5_use_modules(...)

Task-number: QTBUG-63519
Change-Id: I59769060a3a93686bf319b558c0ede55755fdb70
Reviewed-by: David Faure <david.faure@kdab.com>
2018-03-24 22:31:18 +00:00
Allan Sandfeld Jensen
a47cb14680 Detect C standard and try using the most recent
Fixes the default C version used with gcc < 5

Change-Id: I948dece961caed8e6b181e1c6e6b9dc43c46583f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-03-21 13:52:10 +00:00
Qt Forward Merge Bot
cc920b4cdd Merge remote-tracking branch 'origin/5.11' into dev
Change-Id: I35a6555e3885e489f88aa9b4b0142e1017f7a959
2018-03-21 08:59:26 +01:00
Simon Hausmann
0ffb7c419a Fix CONFIG+=qtquickcompiler and immediate resources with shadow builds
Generated files should be added to RESOURCES with an absolute path.

Task-number: QTBUG-67011
Change-Id: Ief82b576824df9abd0901970f076e30dfe57b7d0
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-03-20 07:34:50 +00:00
Tor Arne Vestbø
27239f4fcf macOS: Explicitly link to debug version of framework when needed
When Qt is configured for both debug and release, and frameworks are
enabled, we produce two dynamic libraries inside each framework, eg:

 QtCore.framework/QtCore
 QtCore.framework/QtCore_debug

When building an executable against these frameworks, we pass -framework
QtCore, and the resulting executable will have its LC_LOAD_DYLIB load
commands pointing to e.g.:

  @rpath/QtCore.framework/Versions/5/QtCore

When running the executable, the dynamic loader will load the dynamic
library dependencies based on these load commands.

By setting the DYLD_IMAGE_SUFFIX environment variable at runtime to
'_debug', the dynamic loader will prefer the debug versions of each
library inside the frameworks.

Unfortunately the use of an environment variable to choose debug or
release versions leaves room for mismatches between the executable
and the libraries that are loaded. An executable built in debug
mode will at runtime pick up the release versions of the Qt libraries
unless the DYLD_IMAGE_SUFFIX has also been set to match the build
configuration of the executable.

This results in confusing situations such as building your application
in debug mode, and then stepping into Qt code but not getting any
symbols. Qt Creator has an option to run the application with
DYLD_IMAGE_SUFFIX set, but this is not enabled by default due
to the startup cost of loading the Qt debug libraries.

More critically, it results in tests failing when the tests are using
QTest::ignoreMessage to ignore warnings produced by Qt, and these
calls are ifdefed (correctly) inside QT_NO_DEBUG, as the test
(built in debug mode) will then expect warnings from Qt, but those
warnings are not emittet, as the test is run against the release
version of the Qt libraries.

To mitigate this mismatch, we now link the Qt frameworks using
an explicit suffix, just like we would for no-framework builds
on macOS, for debug and release builds on Windows, and for
normal builds on other Unixes, leaving the dependency chain
for the application predictable:

 @rpath/QtCore.framework/Versions/5/QtCore_debug

This also conceptually matches how Xcode builds applications and
frameworks, where it never relies on DYLD_IMAGE_SUFFIX, and instead
uses two separate build directories, one for each configuration.

The change means that Qt Creator will always load the Qt debug
libraries if the application is built in debug mode. For Qt
development this is a good thing, as you expect to be able to
step into Qt code. For our users, the added startup cost can
be mitigated by shipping our binary packages as release-only,
but with separate debug info enabled.

Change-Id: Ib9f1f2dab90ed00b9fb011200e3a69c71955e399
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2018-03-16 10:30:15 +00:00