Add the CONFIG value c++2b that represent the upcoming C++23 standard.
Add QMAKE_CXXFLAGS_CXX2B and QMAKE_CXXFLAGS_GNUCXX2B.
On MSVC, use /std:c++latest when c++2b is active.
This fixes an issue with MSVC where c++latest implied the /std:c++20
compiler flag.
Pick-to: 5.15 6.2 6.3
Fixes: QTBUG-102202
Change-Id: Ie00ee5793c1a649195013c8c19efc8d59cf0acc9
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
Implemented as an alias to keep c++2a working and remain consistent with
the way this was handled for the c++20 switch in cmake and the c++17
switch in qmake.
Pick-to: 6.2 6.3
Change-Id: I9a5f6d6b3a3adec748cf7207ceaa6da98d053cdb
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
Make it possible to select the C17/C18 standard with
CONFIG += c17
or
CONFIG += c18
Pick-to: 6.2 5.15
Fixes: QTBUG-96026
Change-Id: I719d22366c3efda009118d58ead173a25ed285c0
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
We now assume that source code is encoded in UTF-8 by default on
all platforms (and verify this with an auto test). Provide
a CONFIG+=no_utf8_source option for backwards compatibility.
[ChangeLog][qmake] qmake will tell the compiler that source code is
encoded in utf-8 by default. This mainly has an effect on Windows, where
MSVC still assumes source code is encoded in the current ANSI code page.
Use CONFIG+=no_utf8_source to get back the Qt 5 behavior.
Change-Id: I6dcafcaeefdea7d3907ccb723aeb7d23ccc0f04f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
We will want to use C++17 code in our headers soon.
(including the one in the bootstrap libraries)
This patch is quick and dirty, I guess it will be cleaner once we move to cmake
Updated QMAKE_MACOSX_DEPLOYMENT_TARGET because 10.13 runtime does
not support C++17 stdlib features
Change-Id: I75ac171436945dddd1bb953a9c8d323ac20da7ac
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Modifications of the CONFIG variable in the project file wasn't taken
into account in the handling of DEFINES_DEBUG and DEFINES_RELEASE,
because it was happening before the evaluation of the project file.
Moved the handling code into default_post.prf where the other *_DEBUG
and *_RELEASE variables are handled.
In practice that means: to avoid the addition of the NDEBUG define one
has to remove NDEBUG from DEFINES_RELEASE.
This amends commit 1456b809.
[ChangeLog][qmake] To remove the NDEBUG define that is added by
default in MSVC mkspecs, write DEFINES_RELEASE -= NDEBUG in your .pro
file.
Fixes: QTBUG-81569
Change-Id: I2ea5628653275a4e48ad002977d34969c0663815
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
[ChangeLog][qmake] The CONFIG value c++latest was added to select the
latest C++ standard the currently used toolchain supports.
Task-number: QTBUG-75653
Change-Id: I22ddc9d293109d99e652b7ccb19d7226fca4716d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Makes it possible to build user projects and Qt with C++2a. It is not
automatically upgraded to yet though.
Change-Id: I949ce94871ddc53f21b7265a52b9c0e1370456c8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
https://gcc.gnu.org/ml/gcc-patches/2018-10/msg01240.html
This is currently only used for webengine, where link time really matters.
New configure options:
* force 'lld' '-linker lld' or' --linker=lld'
* force 'gold' '-linker gold' or '--linker=gold'
* force 'bfd' '-linker bfd' or '--linker=bfd'
Note before by default gold was always forced (if supported) now default linker
is system default one.
[ChangeLog][Tools][configure & build system] Added --linker=[bfg,lld,gold] configure flag.
Change-Id: Idaa13510da70243c6176b96db846d629cd65c7af
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
[ChangeLog][qmake] Introduced the variables
WINDOWS_TARGET_PLATFORM_VERSION and
WINDOWS_TARGET_PLATFORM_MIN_VERSION for overriding the default values
of WindowsTargetPlatformVersion and WindowsTargetPlatformMinVersion in
Visual Studio project files.
The code to determine the default values is moved to qmake feature
files. A common/windows-desktop.conf file is introduced for variables
common to all non-UWP Windows mkspecs.
The package_manifest feature uses WINDOWS_TARGET_PLATFORM_VERSION as
default value for WINRT_MANIFEST.minVersion, and
WINDOWS_TARGET_PLATFORM_MIN_VERSION for
WINRT_MANIFEST.maxVersionTested respectively.
Task-number: QTBUG-53654
Change-Id: I251ec7f9b804c9bc9f7d571f5b43d52b2a2d99d3
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
The correct name is c++1z. Anyhow, this is easy enough to get wrong,
so make sure CONFIG += c++17 works as well.
Task-number: QTBUG-67527
Change-Id: Iea26b18824b38b1b5170f85987cf5c750b8e10ab
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Fixes the default C version used with gcc < 5
Change-Id: I948dece961caed8e6b181e1c6e6b9dc43c46583e
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
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>
If the linker supports it, add the gdb index to the debug symbols, which
makes loading gdb on Qt libraries much faster.
Change-Id: I2ed201c22913b97ac2efaefb5e31636e795ae102
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
This was originally enabled in the mkspecs for 64-bit QNX 7.0.0
but that broke when the qtConfig change was made. It looks like
qtConfig shouldn't be used in the platform mkspecs. I suspect
the stack-protector changes were left out of the 32-bit mkspecs
so that 6.6.0 builds wouldn't be affected.
Ignore the stack-protector/stack-protector-all possibility since
it isn't possible to access it without a command line option.
Specifying both options doesn't even make sense since
stack-protector-all encompasses stack-protector.
For now, leave out command line control of this feature.
Task-number: QTBUG-59644
Change-Id: I99323216be5b592dd2c3bef6d22da195764a6e65
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
That's not the same as -Za.
Change-Id: Ica9894dc9b5e48278fd4fffd14bb316b687abffe
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
adding shared install paths to QMAKE_{INCDIR,LIBDIR} in the spec has the
tiny side effect that they are searched _first_, which is generally a
really bad idea - they should be _last_.
for that purpose, make QMAKE_{INCDIR,LIBDIR}_POST live up to their names
(i.e., search them actually last) and migrate all affected specs to use
them.
Task-number: QTBUG-40825
Change-Id: Ie0de81c3cc49e193186d2fedd7d6c77590c8ef79
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Adds default off configure flag to use compiler optimizations
for size instead of the default speed/size trade-off.
Change-Id: I36702064ef2cc743d2d03a386adf5cefd5371b6e
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
The configure-time detection (cxx11default) isn't enough if the compiler
can be changed. This is especially necessary if Qt is compiled with a
compiler that defaults to >= C++11 (e.g., GCC 6) and then the user
selects a compiler another compiler (e.g., Clang) via -spec option. In
that case, we'd miss adding the -std=c++11 or -std=gnu++11 option to the
command-line, causing the compilation to fail.
As a nice side-effect, even moc without moc_predefs.h will now get the
__cplusplus setting.
Task-number: QTBUG-58321
Change-Id: I74966ed02f674a7295f8fffd14a8be35da9640e1
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Building qt with msvc would fail with the -developer-build configure
option turned on under simplified chinese locale.
This is because msvc will emit warnings for source files with utf-8
characters which are not representable in CP936, and -developer-build
implies treating warnings as errors.
This patch turn on -utf-8 compiler option for msvc2015 update 2
and up only for building qt.
Task-number: QTBUG-58161
Change-Id: If38ea11eb1f39f8e08efa1cccb92e0eea50daf92
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Enables optimizing with -Og if GCC has the option available, this
should produce faster debug binaries without compromising debugability.
Is a privateConfig to limit it to the default Qt build.
Includes two fixes for false positives of maybe_uninitialized triggered
by -Og on gcc 4.9.
Change-Id: I466d7a4070295714189024369312e6cbd36cfacf
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
don't ignore detected features for host tools when we're not actually
cross-building.
Change-Id: Id62a3c1c6b7ae422b14efb4fbea0892b05a047cc
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: René J.V. Bertin <rjvbertin@gmail.com>
this makes it possible for features added via CONFIG to use QMAKE_USE*,
as default_post.prf is processed before all features in CONFIG.
Change-Id: Id0812a0fb1aa5e658548bd2bc6003234085545e7
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Adding an entry that represents an external library to the
QT_USE[_PRIVATE] variable will cause qmake to lookup the
required compiler/linker flags from the configuration system,
and add them to the module that is being compiled.
Change-Id: I309aa2749ddf4fab13ab8fdd26e8ab2123719ea8
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
This change partially reverts 1bfc7f68 about QT_HAS_BUILTIN define
and undef in src/corelib/tools/qsimd_p.h.
This change is also squashed with "Fall back to c++11 standard
compiler flag for host builds" which is done by Peter Seiderer.
Conflicts:
mkspecs/features/default_post.prf
src/3rdparty/sqlite/0001-Fixing-the-SQLite3-build-for-WEC2013-again.patch
src/3rdparty/sqlite/sqlite3.c
src/corelib/tools/qsimd_p.h
src/gui/kernel/qevent.cpp
src/gui/kernel/qwindowsysteminterface.cpp
src/gui/kernel/qwindowsysteminterface_p.h
src/plugins/bearer/blackberry/blackberry.pro
src/plugins/platforms/cocoa/qcocoasystemsettings.mm
src/plugins/platformthemes/gtk2/gtk2.pro
src/plugins/styles/bb10style/bb10style.pro
src/sql/drivers/sqlite2/qsql_sqlite2.cpp
tools/configure/configureapp.cpp
Task-number: QTBUG-51644
Done-with: Peter Seiderer <ps.report@gmx.net>
Change-Id: I6100d6ace31b2e8d41a95f0b5d5ebf8f1fd88b44
There is no test for c++ standard support for the host build
(only for the target compiler/build) which leads to trouble
in some cross compiling environments (old host compiler, new
cross compiler):
g++: error: unrecognized command line option ‘-std=c++1z’
So disable c++ standard compiler flags unconditionally for host builds.
Task-number: QTBUG-51644
Change-Id: Ifb3042e125fe199a7e081740d1171d26ccacf0c5
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Instead of lumping both Objective-C (.m) and Objective-C++ (.mm) sources
into the same pile, passing them on to the same compiler as for C++ (CXX),
with the C++ flags (CXXFLAGS), we follow Apple's lead and treat them as
variants of the C and C++ languages separately, so that Objective-C
sources are built with CC and with CFLAGS, and Objective-C++ sources
with CXX, and CXXFLAGS.
This lets us remove a lot of duplicated flags and definitions from the
QMAKE_OBJECTIVE_CFLAGS variable, which in 99% of the cases just matched
the C++ equivalent. The remaining Objective-C/C++ flags are added to
CFLAGS/CXXFLAGS, as the compiler will just ignore them when running in
C/C++ mode. This matches Xcode, which also doesn't have a separate build
setting for Objective-C/C++ flags.
The Makefile qmake generator has been rewritten to support Objective-C/C++
fully, by not assuming that we're just iterating over the C and C++
extensions when dealing with compilation rules, precompiled headers, etc.
There's some duplicated logic in this code, as inherent by qmake's already
duplicated code paths, but this can be cleaned up when C++11 support is
mandatory and we can use lambda functions.
Task-number: QTBUG-36575
Change-Id: I4f06576d5f49e939333a2e03d965da54119e5e31
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@theqtcompany.com>
[ChangeLog][General Improvements] Qt's buildsystem now detects whether
the compiler supports C++14 and experimental support for C++1z. If the
compiler supports it, then Qt is automatically compiled using that
support.
\
This does not apply to user applications built using qmake: those are
still built with C++11 support only. To enable support for C++14 in your
application, add to your .pro file: CONFIG += c++14 (similarly for
C++1z).
Change-Id: Ib056b47dde3341ef9a52ffff13ef1f5d01c42596
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
There is no test for gold linker and new dtags support for the host build
(only for the target compiler/build) which leads to trouble in some cross
compiling environments (see [1] for details).
So disable gold linker/new dtags support unconditionally for host builds.
[1] http://lists.busybox.net/pipermail/buildroot/2015-May/128303.html
Task-number: QTBUG-46125
Change-Id: Ic62828704dcce461487d63860705158cce3e4af8
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
this allows LD_LIBRARY_PATH to take precedence over the hard-coded
rpath, which is the only sane thing to do (which is also why i'm not
adding an option to disable it).
this behavior is consistent with non-linux systems.
the windows version has no auto-detection, just like for gold linker
usage.
Task-number: QTBUG-3069
Change-Id: Ief9ba032291c898d75d76ecc740390954382a804
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
This patch adds the feature use_gold_linker to use the gold linker that
has been part of of GNU binutils since 2008. Gold links C++ libraries
much faster and use less memory.
The feature is autodetected when building Qt on Linux, but can be disabled
in configure. On MingW builds it is default off but can be enabled for
cross builds.
Change-Id: Icdd6ba2e706b2c791bcf44b6e718c2b7a5eb2218
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
"system" refers to the system's native shell, which is what qmake's
system() invokes, and whose convention by far most commands invoked from
a makefile will need.
"shell" refers to the shell invoked by make, which diverges from the
system shell only when qmake/mingw32-make is called from an msys shell.
its conventions need to be used for anything the shell itself does
(e.g., assembling env variables, but also command line argument
unquoting) and the commands the mkspec sets according to the shell
(e.g., QMAKE_MOVE).
Change-Id: I0000aa9417c199cf8a810619d31ded24bb0675f9
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
This patch adds a new config option to qmake to enable full optimization
where it makes sense. This currently is supported on all gcc like
compilers by exchanging -O2 for -O3.
In qtbase it is used to enable full optimizations on qtcore and qtgui
and in a later patch can be used to replace similar existing logic in
QtWebKit's WTF and JavaScriptCore modules.
This fixes a performance regression from gcc 4.7 to 4.8 in the software
renderer.
An aliasing error in qregion.cpp which was exposed by more aggresive
optimization has been solved as well.
Change-Id: Ic2c6c41b79cb3846212b40e7bcc11ff492beb27f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
As we add more classes with RValue ref qualified methods we will need
the same _compat trick and no-pch support as QString.
This patch moves the extra compiler to precompile_header.prf which is
automatically included when pch is used.
Change-Id: I422a355fd11f499ce0648a90b0385f2a6f699fcb
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
that means further detaching the generation and installation of debug
info from the thing calling itself A Debug Build.
Task-number: QTBUG-32412
Change-Id: I4d79d1ae4806c8e4a2d6a7ccd030fb88385dd7d4
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
We used to compute the default exclusive build directory, eg 'debug', at
configure time, and then set OBJECTS_DIR, MOC_DIR, etc to include this
hard-coded default exclusive build directory. We then had to run a post-
process step where we replaced the 'debug' part with the current actual
exclusive build pass, eg 'release', resulting in long-standing bugs such
as QTBUG-491 where we end up replacing parts of the build output dirs
that were not part of the original exclusive build directory.
We now set the OBJECTS_DIR, MOC_DIR, etc defaults in configure like
before, but they do not include any exclusive-build information. The
exclusive build directory is handled as a separate step in default_post
where we adjust all entries in QMAKE_DIR_REPLACE to be exclusive
directories.
For backwards compatibility the new exclusive build behavior is only
enabled for variables named by QMAKE_DIR_REPLACE_SANE, which for Qt
itself applies globally to everything but DESTDIR, and for libs and
tools also applies to DESTDIR. The reason for leaving out DESTDIR in
the general case is because many tests and examples assume the old
behavior for DESTDIR. A side effect of including all the other
variables for Qt libs and tools is that the PCH output dir will be
uniformly set, which has been an issue on Windows in the past.
The addExclusiveBuilds function now takes two or more arguments,
each argument being the key for an exclusive build, which can be
customized eg. using $$key.{name,target,dir_affix}. Passing more
than two arguments results in three/four/etc-way exclusive builds,
eg debug/release/profile. Exclusive builds can also be combined, eg
static/shared + debug/release by making two calls to the function.
We also handle individual targets of combined exclusive builds,
eg static/shared + debug/release, meaning it is possible to run
'make debug' to build both static-debug and shared-debug.
Task-number: QTBUG-491
Change-Id: I02841dbbd065ac07d413dfb45cfcfe4c013674ac
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Shared between UNIX and Win generators, and allows prfs after
default_post to rely on sane TARGET and DESTDIR values.
This allows us to clean up the DESTDIR logic in testcase.prf,
which was completely busted. Doing the two in separate commits
is unfortunately not possible as the old testcase.prf logic
was so broken it would barf if only looked at.
Change-Id: Ibf21216195c760ee46ae679c162b207b77a9d813
Reviewed-by: Jan Arve Sæther <jan-arve.saether@digia.com>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
The 'silent' option to CONFIG will mangle QMAKE_CXX and friends by prepending
an @echo, which sdk.prf doesn't handle (it assumes the variables contain
names of executables, with optional arguments). Instead of teaching sdk.prf
generic command line parsing we ensure that silent.prf does its job at the
very end, when the tools have already had their paths fixed by sdk.prf.
Change-Id: I7093232e5cc37ed8106a3b838f42ad8f1a43fb86
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
all tests that happen after default_post loads resolve_config can rely
on debug vs. release, static vs. shared, and staticlib vs. dll being
properly "de-conflicted".
Change-Id: Ie0b4defcd6024bd1c25f53ba7e03621052d96492
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
the current approach of having "free-flying" prf files for such a core
issue is rather insane. this was noticed early on, as evidenced by the
forcible loading of debug/release/debug_and_release in default_post.
however, things remained a mess, in particular static vs. shared.
consequently, the commit merges all related feature files. the actual
config resolution is put in a separate feature file, so it can be loaded
by resolve_target if that happens to be loaded early on.
Change-Id: Ie30e7c63cabe9409a3263ca1650e323a870926f2
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
instead of letting *every* qmake-based project have recursive check target,
let interested projects "subscribe" to it by adding CONFIG+=testcase_targets
in a central place (.qmake.conf, which Qt itself does via qt_build_config.prf).
Change-Id: Ib13fdd2d3a1adee0c5ad02b6b176a664c583bf9d
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
instead of letting *every* qmake-based project have recursive docs targets,
let qt modules "subscribe" to it explicitly by having load(qt_build_config)
in their .qmake.conf (which they already do).
Change-Id: I97b74591fd0c4bd5f8b08c5f550df9c7eef2f556
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
- the old docs target becomes html_docs
- a new qch_docs target is added. the .qch files end up directly in
QT_INSTALL_DOCS, wihout any subdirectories in between
- the new docs target invokes html_docs and qch_docs
- respective un-/install targets are added as well. note that the
install targets don't depend on the build targets, as it's virtually
impossible to get the dependencies right throughout the hierarchy.
Change-Id: I07a2589db8252371e77cf925c47c4e59fbd1b2ca
Reviewed-by: hjk <qthjk@ovi.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
The new 'prepare_docs' CONFIG option triggers the documentation rules in
default_post to generate two extra targets: prepare_docs and generate_docs.
The prepare_docs stage runs qdoc with the -prepare option, which means qdoc
will only generate index files, and the generate_docs stage will call
qdoc with -generate, which reads the index files and generates the final
output. The regular docs target will then run the prepare_docs target
for all submodules before running the generate_docs target.
This ensures that when generating the final output, qdoc has all the
index files for all the other modules available, to be able to resolve
cross-references between the various Qt modules.
This patch needs a follow-up in qt5.git to add CONFIG+=prepare_docs, so
that the root Qt5 build will be able to hook into this new behavior.
Change-Id: I654d7f0d4d5a41d9be208e6d3a8923bf0194f9ad
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Just like 'make docs' is used to build documentation, you will now have
to run 'make install_docs' to install it.
Change-Id: I57db53160ca91618784f4e39da0a47322c070208
Task-number: QTBUG-27590
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
The qmake function prepareRecursiveTarget can now be used both by the
existing logic in default_post, as well as future recursive targets that
will be needed as part of the modularization of documentation builds.
Change-Id: Ibc72c3e224cb57c9f1796de3b04fda9de663dbb4
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
