the host compiler's version is not determined, so we cannot make any
assumptions about its capabilities.
Task-number: QTBUG-53017
Change-Id: I939fd7402b5daac73f2195b9d8763b9008bc7ea4
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Rolf Eike Beer <eb@emlix.com>
I've tested with Clang 3.7 and ICC 16 on Linux, XCode 6.4 on OS X for OS
X (not iOS).
Change-Id: Ib306f8f647014b399b87ffff13f1f4291d801a20
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.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>
Prefer -std=gnu++11 unless strict_c++11 is defined. You can enable
strict C++11/C++14 mode by using
CONFIG += strict_c++
That is enabled for Qt's own code, so we we don't accidentally use GNU
extensions in portable code.
There's no support for strict C++98 mode (that is, the -ansi option).
[ChangeLog][qmake] By default, GNU extensions are now enabled with
Clang, GCC and ICC even in C++11 and C++14 modes. To disable the GNU
extensions, add to your .pro file: CONFIG += strict_c++.
Change-Id: Ib056b47dde3341ef9a52ffff13ef14de2169bef5
Reviewed-by: Kai Koehne <kai.koehne@theqtcompany.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
pkg-config .pc files use the raw target paths (and pkg-config patches up
-I and -L flags on the fly), so these files were actually already fine.
libtool .la files use the magic prefix = to denote the sysroot.
this works only with libtool 2.4+ (sept 2010).
qmake .prl files have no built-in sysrootification magic, but as they are
read by qmake, it's possible to put property references into them. this
makes them relocatable, both inside and outside sysroots.
Change-Id: I97236ac81e7aba4e4771d14a44cbf59144cc2d3e
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
Glibc will use the intrinsics for 32- and 64-bit, but didn't for 16-bit
(probably because GCC didn't document it until version 4.8), so this
commit will make us access the intrinsics directly the intrisincs for
all type sizes.
Additionally, this will get us access to the compiler intrisics even
without Glibc, such as when building against uclibc or Bionic.
Another benefit is that both Clang and ICC will use the MOVBE
instruction on Atom and Haswell architectures.
Change-Id: I39d1891f479887d719d69ebe4ac92ac9bfeda8af
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@theqtcompany.com>
Tested with GCC 4.9, Clang from XCode 5.1 and ICC 15 beta.
Clang 3.5 (pre-release) cannot compile qtdeclarative yet with -Werror
due to invalid C++ code there that calls member functions on null
pointers.
Change-Id: Ic2845371a1899716985bc0813dfb820fa418e207
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The linker complains that some symbols were compiled with different visibility
settings when linking host_build tools such as the import scanner. As it turns
out, we do CONFIG += hide_symbols for static libraries (such as bootstrap or
qmldevtools) but naturally not for the final program source code. It appears
symbol visibility is not of importance for static libraries in host builds (as
opposed to static libraries later linked into shared libraries), therefore this
patch removes that.
Change-Id: I237a2d8669374eb059dc91b5378f6e3ec93d67a6
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
clearly, this was a poor man's implementation of -force-debug-info.
Change-Id: Ib5c7e390bd0e3a6912af8c4027074a114ed33f8a
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This would mean we don't pass -Werror when under CONFIG += warn_off.
However, that's not the main goal. The main goal of this change is to
have -Werror appear *after* -Wall -Wextra.
With some compilers, like Clang, this is necessary to have the
-Wno-error=foo options work properly. For example, if the -Wfoo
warning gets enabled by -Wall, Clang will treat it as an error if the
arguments appear in the following order:
-Werror -Wno-error=foo -Wall
But not if they appear in this order:
-Wall -Werror -Wno-error=foo
Change-Id: I38c820bffc8277d909391e9bf557db5347836b9c
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Base modules already work and produce no warnings.
Change-Id: I932d7aaecbe3404f180e185bf1e9fff4d488a05d
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@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>
When warnings are treated as errors, no Android code will
compile, since one of the platform headers in the NDK triggers
the literal-suffix warning. So we need to mark this as no-error.
Change-Id: Icabf1c2f2d32f76ee157d04e62a28f83abeed8f1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Commit a7ba0ad93e introduced the -Wno-
language. The warning about deprecated functions, variables or types is
-Wdeprecated-declarations.
Change-Id: I6d269851afefc6a3fc3bf6599c3c702eb164245e
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
It sounds like a good thing to have this warning, but for
future-proofing we can't have it. The system libraries might change
and add deprecation marks (OS X does that often). If they do that, we
don't want poor developers to have to fix all warnings before they can
build Qt again.
Change-Id: I4ff317da0de596c470bb1efe6e59bcf70aeec8fc
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
This allows us to go back to older versions of Qt with newer compilers,
that didn't exist when those versions were released. It also allows
someone upgrading their compiler and not being faced with having to fix
all warnings before Qt compiles.
This commit whitelists the following compilers:
* Apple Clang versions 4.0, 4.1 and 4.2 (OS X only)
* Intel Compiler versions 13.0, 13.1 and 14.0 (Linux only)
* GCC versions 4.6, 4.7 and 4.8 (all OS)
Notably, Clang on other other OS besides OS X and MSVC are missing.
Change-Id: I665160d40a59336da1904f2a6c1eda543e592b48
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
This is enabled only for -developer-builds and only for certain
compiler-version combinations that are in a whitelist.
It also requires each library, plugin or tool to declare whether it is
supposedly clean of warnings. When most targets are clean, we can
consider inverting.
Change-Id: I17b5c4e45aee5078f9788e846a45d619c144095a
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
This file is now included by three types of Qt output: modules,
plugins (including QML plugins) and tools.
Change-Id: I5085f6ff37f70e9228303bf0520040adc2e2d7a5
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
