When QFile::open is called with the NewOnly flag, the call will
fail if the file already exists. As usual, if the file does not exist,
it will be created. Like QTemporaryFile, there is a guarantee from
the operating system that you are not accidentally creating a new file
on top of an older file. When QFile::open is called with the
ExistingOnly flag, the call will fail if the file does not exist. The
ExistingOnly flag only provides new functionality when used with the
WriteOnly flag. For ReadOnly it provides no change in functionality,
as ReadOnly by itself already never creates.
Task-number: QTBUG-52244
Change-Id: I8e3206728f245f95172c225bf297023fb078fc6d
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
mingw-w64 toolchain:
- add missing compiler definitions, similar to
'msvc-desktop.conf' toolchain,
- describe the reasons of missing compiler definitions, available in
'msvc-desktop.conf' toolchain,
- add missing 'QMAKE_CXXFLAGS' and 'QMAKE_CXXFLAGS_WARN_ON' variables,
similar to 'msvc-desktop.conf' toolchain.
ICC on Windows toolchain:
- add 'QMAKE_CFLAGS_OPTIMIZE_FULL' variable, similar to 'gcc-base.conf'
toolchain, though left it unused for now,
- add missing flags to 'QMAKE_CFLAGS' variable, similar to
'msvc-desktop.conf' toolchain,
- update deprecated 'Qwd' flag with 'Qdiag-disable',
- use 'QMAKE_CFLAGS_OPTIMIZE_DEBUG' variable instead of '-Od' flag,
similar to 'gcc-base.conf' toolchain (ICC implies '-O2' optimization
level by default, while MSVC implies '-Od'),
- add 'QMAKE_CFLAGS_UTF8_SOURCE' variable, similar to
'msvc-version.conf' toolchain; use a workaround to initialize it,
until '-utf-8' flag would be supported by ICC on Windows,
- update deprecated '-Qstd=c++1z' flag with '-Qstd=c++17',
MSVC toolchain:
- remove 'incremental' from MSVC 'CONFIG' variable, since it has
relevance only for the Unix generator,
- add 'QMAKE_CFLAGS_OPTIMIZE_DEBUG' variable, used in ICC for Windows
toolchain,
- add empty 'QMAKE_LIBS' variable, similar to 'win32-g++' toolchain,
- add 'uuid.lib' library to 'QMAKE_LIBS_GUI' variable, similar to
'win32-g++' toolchain,
- add C++14 and C++17 language support flags, though left them disabled
for now, similar to 'win32-icc' toolchain.
Change-Id: Ideef62d0422674184836faa655bfc5d09a5f612f
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Common changes to mingw-w64, ICC on Windows, and MSVC toolchains:
- set similar order of variables and its splitting into sections,
- set similar order of flags in variables and the way they are set.
mingw-w64 toolchain:
- move 'gcc-base.conf' include before setting Windows specific
flags, similar to include 'msvc-desktop.conf' in ICC on Windows
toolchain; this leads to consistency with other toolchains
and allows to safely override common GCC variables with Windows
specific ones, when needed,
- move 'QMAKE_EXT_OBJ' and 'QMAKE_EXT_RES' variables to the linker
flags section, according to its purpose.
MSVC toolchain:
- set flags order in 'CONFIG' variable, similar to mingw-w64 toolchain.
Change-Id: I417cc8f7959c669dd504f2c5c11eb879a7989bd4
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>
It seems the compiler supports /arch:AVX512 and /arch:AVX512F but none
of the other switches (and neither are documented). And when you pass
those, you also get Conflict Detection (CD), Double & Quad (DQ), Byte &
Word (BW) and Vector Length (VL), which matches the ICC switch
"-xCORE-AVX512". Unlike ICC, there doesn't seem to be an option to
enable only the common part of AVX-512.
Support for Intel Xeon Phi's current features (Exponential &
Reciprocation and Prefetch) and future ones (IFMA, VBMI, 4FMAPS, 4VNNI
and VPOPCNTDQ) seems to be missing altogether.
See https://blogs.msdn.microsoft.com/vcblog/2017/07/11/microsoft-visual-studio-2017-supports-intel-avx-512/
Change-Id: I98105cd9616b8097957db680d73eb1f86e487e6d
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Common changes to mingw-w64, ICC on Windows and MSVC toolchains:
- update toolchains description similar to 'gcc-base.conf'.
Change-Id: Ie456c6cec86c0d1c0107ca84a0fa7855666df91e
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
I need to include linxx/if.h from elsewhere and these two files conflict
by defining the same types (struct ifreq, struct ifmap, struct ifconf,
etc.)
Change-Id: I0a103569c81b4711a649fffd14eb2f6dbbef83b6
Reviewed-by: Jake Petroules <jake.petroules@qt.io>
This definition causes a build error if concrt.h is included.
According to Microsoft [1], this macro is unsupported. It was added in
f5908363 to silence compiler warnings that are generated when exceptions
are turned off and certain STL headers are included.
We specifically disable the warnings in question now.
[1] https://blogs.msdn.microsoft.com/vcblog/2015/07/14/stl-fixes-in-vs-2015-part-2/
Task-number: QTBUG-63409
Change-Id: I567d5d46292fbd7898394e217bb0987fbcdca9de
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Conflicts:
examples/examples.pro
qmake/library/qmakebuiltins.cpp
src/corelib/global/qglobal.cpp
Re-apply b525ec2 to qrandom.cpp(code movement in 030782e)
src/corelib/global/qnamespace.qdoc
src/corelib/global/qrandom.cpp
src/gui/kernel/qwindow.cpp
Re-apply a3d59c7 to QWindowPrivate::setVisible() (code movement in d7a9e08)
src/network/ssl/qsslkey_openssl.cpp
src/plugins/platforms/android/androidjniinput.cpp
src/plugins/platforms/xcb/qxcbconnection.cpp
src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
src/widgets/widgets/qmenu.cpp
tests/auto/widgets/kernel/qwidget_window/tst_qwidget_window.cpp
Change-Id: If7ab427804408877a93cbe02079fca58e568bfd3
Define the lib dependencies for corelib in corelib.pro, where they
belong.
Change-Id: I973d3b0c571782d869b27dea243e899db4dddc43
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
clang+libc++ is the only supported way by Google nowadays.
libstdc++ is too old and already fails to build some C++11 apps
e.g. missing std::to_string().
android-g++ mkspec still uses libstdc++ and g++.
Use -isystem to include system headers instead of QMAKE_INCDIR_POST (-I).
Task-number: QTBUG-60455
Change-Id: Iba8b04594c2e5e2832e6cf480e4e52ff31ad4106
Reviewed-by: Sérgio Martins <sergio.martins@kdab.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
Replaced dependency to libdl.a with libshm_client.a. Defined symbols
'shm_area_password' and 'shm_area_name' internally. The build for
INTEGRITY is static only so libdl.a is not needed.
Change-Id: I7e34528835132d79ea582a30cf9ff61cdda198da
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Rolland Dudemaine <rolland@ghs.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
For clang -Os is very similar to -O2 and doesn't really reduce size much.
-Oz is usually what you want to use with clang for code reduction.
Now clang binaries are only 9% bigger than gcc's, instead of 22%.
Change-Id: Ib0ba560be26db68aeb21c13df4b151b7fbd81431
Reviewed-by: BogDan Vatra <bogdan@kdab.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Instead of expanding the VULKAN_SDK environment variable at Makefile
processing time, expand it at qmake time, so that a resolved include
path is passed to WebEngine's build system GN.
Task-number: QTBUG-61823
Change-Id: I63bd661350883d22af2ccdeb7c360ed0d8d881c8
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
It is considered slightly faster than the default mode[1],
but on Windows it causes trouble when aborting the build,
it leaves behind zero-sized object files which cause link
error. See discussion in the bug-make mailing list[2].
[1] https://stackoverflow.com/a/1512947/764870
[2] http://lists.gnu.org/archive/html/bug-make/2017-06/msg00066.html
Change-Id: I7aa0b328a8c743fdfe9b0aece02b329066515076
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
System headers like tchar.h need the _UNICODE define, not UNICODE.
While qplatformdefs.h already provides _UNICODE when UNICODE is
defined, users might want to include tchar.h without Qt includes.
This is consistent with Visual Studio's default defines.
Task-number: QTBUG-61411
Change-Id: I2f604368080270d840f0dbb2cf273805d2ba5239
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Introduce uap3 namespace which is used for newly introduced
capabilities. In addition, the autodetection of namespaces for
capabilities within the uap namespace is disabled in Visual Studio
lately. Hence, the output needs to be more verbose including the
namespace for a capability.
Task-number: QTBUG-60899
Change-Id: Ia1ccf825d4c257d2661e34c195c45fd37e0b6413
Reviewed-by: Oliver Wolff <oliver.wolff@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>
The instruction is "RDRAND", but the feature name, according to GCC, is
RDRND, so I had to change some macros in qsimd_p.h.
Change-Id: Icd0e0d4b27cb4e5eb892fffd14b5166779137e63
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
The flag makes the build fail for UWP as well as desktop Windows . It
will trigger a compile error as soon as UWP API is used, which happens
in qtbase for desktop in the direct2d backend, but it is also used for
other Qt modules, so we decided to disable the flag for now.
This patch partly reverts b7d76e533c
Task-number: QTBUG-61239
Change-Id: I0cc630f4c09c52f0c116f4a7b95a44c3a55e0be3
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@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 via QMAKE_LFLAGS 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, introduce QMAKE_RPATHLINKDIR_POST, and migrate all
specs to use it.
QMAKE_RPATHDIR_POST is added for consistency, but not actually used.
Task-number: QTBUG-59457
Change-Id: Iac6cda5e9111ef8cca454a69861fe8408bb40589
Reviewed-by: Joerg Bornemann <joerg.bornemann@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>
As Qt applications using OpenGL are linked against these libs, merging
them into QtANGLE by default (780105f906)
was a binary incompatible change. This change restores the default
behavior to the one before given change.
If the user wants the libraries to be merged, he can pass
combined-angle-lib to configure.
Task-number: QTBUG-60373
Change-Id: Iedbd3f2ce9284fdde924cfae8d915d6d5fef00db
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Jan Arve Sæther <jan-arve.saether@qt.io>
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>
Let's not allow any new code that uses non-conforming syntaxes. With
GCC and like, we already use -std=c++11 instead of -std=gnu++11 for that
very reason.
Change-Id: I4a7dc1fe14154695b968fffd14aba9f8cea69c47
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
Neither the Intel compiler nor Visual C++ have a dedicated switch to
enable F16C support, like GCC and Clang do. So we used the AVX switch
for that in commit 8241d51f70, as it was
the closest, lowest denominator. That was incorrect and insufficient.
The Intel compiler silently miscompiles the intrinsics with -xAVX,
making calls to out-of-line functions like _mm_cvtps_ph, which don't
exist. So we actually have to use AVX2 support to generate correct code.
That might be a problem later, since Ivy Bridge supports F16C but not
AVX2.
Visual C++ is able to generate F16C code with just -arch:AVX.
Either way, since there's no dedicated command-line switch, there's also
no dedicated preprocessor macro. We're using __AVX2__ for both
compilers, as that's a sufficient condition to indicate a processor that
supports F16C.
Change-Id: I27b55fdf514247549455fffd14b205b8d8b86da7
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
