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* Enable -mno-direct-extern-access and ELF protected visibilityThiago Macieira2022-03-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The -mno-direct-extern-access tells the compiler and linker that references to symbols outside this ELF module mustn't be direct and must instead always go through the GOT or PLT (the PLT can additionally be disabled with -fno-plt). The ELF protected visibility tells the compiler and linker that this symbol is present in the dynamic symbol table as an export, but it cannot be interposed by another ELF module. This option is required for user code to link properly to Qt, otherwise they will get linker errors (assuming GNU binutils >= 2.39) or runtime failures (glibc >= 2.35). Both versions of glibc and binutils are older than GCC 12, so it's a safe assumption they are in use and downgrading the toolchain or libc is not supported. Adding this option to the compilation is assured for CMake and qmake-based projects. For example, all accessess to QCoreApplication::self in QtCore, after this change and with GCC 12 are relocation-free and direct: 000000000013ebf0 <QCoreApplicationPrivate::checkInstance(char const*)>: 13ebf0: cmpq $0x0,0x4f73d0(%rip) # 635fc8 <QCoreApplication::self> 13ebf8: setne %al 13ebfb: je a90fe <QCoreApplicationPrivate::checkInstance(char const*) [clone .cold]> 13ec01: ret Meanwhile, accesses to the same variable in other modules are indirect via the GOT: 66650: mov 0x876e1(%rip),%rax # edd38 <QCoreApplication::self@Qt_6> 66657: cmpq $0x0,(%rax) This replaces the -Bsymbolic and -Bsymbolic-functions (broken) functionality that Qt has been using or attempting to use since ~2006. See https://gitlab.com/x86-psABIs/x86-64-ABI/-/issues/8#note_606975128 Change-Id: Iad4b0a3e5c06570b9f5f571b26ed564aa0811e47 Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io> Reviewed-by: Lars Knoll <lars.knoll@qt.io>
* qmake: Add support for C17/C18Joerg Bornemann2021-08-261-0/+1
| | | | | | | | | | | | 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>
* Qmake: Share QMAKE_LINK_OBJECT_SCRIPT definitionOrgad Shaneh2020-07-061-0/+2
| | | | | | | | | | | | It is only used by default on Windows, but can be enabled by setting QMAKE_LINK_OBJECT_MAX. The current file name is .project_name. Use a sensible file name on this case. Change-Id: Ic250d024e5feca739027c79a6e285d616234c4ea Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
* qmake: Stop using -isystem flagDmitry Shachnev2020-06-061-1/+0
| | | | | | | | | | | This option changes the order of include paths, which can cause problems of various kinds. See https://bugs.debian.org/958479 for an example. The benefit of that option is minimal for what it was intended. Pick-to: 5.15 5.12 Change-Id: I80eeabd09764df290b60bc59aeb2f90d07723608 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Fix compilation of PCRE2 under Intel CETGiuseppe D'Angelo2020-05-271-0/+2
| | | | | | | | | | | | Ubuntu 20.04 enables -fcf-protection by default. PCRE2 10.35 sees this but complains that -mshstk is also necessary to build its JIT. Detect whether the compiler is enabling Intel CET automatically, and if so, build PCRE2 with the right options. Pick-to: 5.15 Change-Id: I3440e689b81f4f07055f211a4fa7331a43eb410d Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Add new AVX512 extensions found in Intel CLX, ICL and ICX processorsThiago Macieira2020-02-031-0/+7
| | | | | | | | | | | | | | Cascade Lake (CLX) added AVX512VNNI, Ice Lake has added that plus the integer multiplication (IFMA), the vector bit manipulation instructions (VBMI and VBMI2), bit algorithms (BITALG), the extended vector AES instructions (VAES), among others. I haven't turned on the configure check for those yet. I believe the VBMI and IFMA instructions will be interesting for Qt image algorithms, but we'll need some Ice Lakes to do benchmarking on. Change-Id: Ib5d667bf77a740c28d2efffd15cb43dd821d4b2d Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
* QRandom: add support for RDSEEDThiago Macieira2019-10-091-0/+1
| | | | | | | | | | | | | | | The Intel whitepaer[1] recommends using the RDSEED over RDRAND whenever present. libstdc++ from GCC 10 will also use it in std::random_device. [ChangeLog][QtCore][QRandomGenerator] The system() random generator will now use the RDSEED instruction on x86 processors whenever available as the first source of random data. It will fall back to RDRAND and then to the system functions, in that order. [1] https://software.intel.com/en-us/articles/intel-digital-random-number-generator-drng-software-implementation-guide Change-Id: I907a43cd9a714da288a2fffd15bab176e54e1975 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
* Use -Wextra instead -WAllan Sandfeld Jensen2019-05-031-1/+1
| | | | | | | -W is a really old way of writing -Wextra. Change-Id: Ibc531749293fab9b03e404fe751fc1c7b4a7e6db Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
* qmake: enable rtti config option for g++/clangDaniel Wingerd2018-12-131-0/+2
| | | | | | Fixes: QTBUG-26595 Change-Id: Ic996c8e27ef4b79c91c5afa0ad55ef0fc07b6004 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
* SIMD: Add a haswell sub-architecture selection to our supportThiago Macieira2018-07-091-0/+3
| | | | | | | | | | | | | | | | | As the comment says, Haswell is a nice divider and is a good optimization target. I'm using -march=core-avx2 instead of -march=haswell because the latter form was only added to GCC 4.9 but we still support 4.7 and that has support for AVX2. This commit changes the AVX2-optimized code in QtGui to Haswell- optimized instead. That means, for example, that qdrawhelper_avx2.cpp can now use the FMA instructions. Change-Id: If025d476890745368955fffd153129c1716ba006 Reviewed-by: Lars Knoll <lars.knoll@qt.io> Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
* Make the use of -fdata-sections and --gc-sections more generic in QtMikhail Svetkin2018-04-271-1/+1
| | | | | | | | | | 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>
* Detect C standard and try using the most recent one (take 2)Allan Sandfeld Jensen2018-04-211-0/+3
| | | | | | | Fixes the default C version used with gcc < 5 Change-Id: I948dece961caed8e6b181e1c6e6b9dc43c46583e Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
* Merge remote-tracking branch 'origin/5.9' into devGabriel de Dietrich2017-07-131-1/+1
|\ | | | | | | | | | | | | Conflicts: src/widgets/widgets/qmainwindowlayout.cpp Change-Id: I306b4f5ad11bceb336c9091241b468d455fe6bb6
| * qmake: Do not default to -pipe on WindowsOrgad Shaneh2017-07-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | Add proper detection of x86 RDRAND instructionThiago Macieira2017-06-121-0/+1
| | | | | | | | | | | | | | | | | | 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>
* | Merge remote-tracking branch 'origin/5.9' into devLiang Qi2017-05-071-0/+1
|\| | | | | | | | | | | | | | | Conflicts: src/network/access/qnetworkreply.cpp tests/auto/corelib/kernel/qmetaobject/tst_qmetaobject.cpp Change-Id: Iadf766269454087e69fb216fc3857d85b0ddfaad
| * Add configure flag to optimize Qt for sizeAllan Sandfeld Jensen2017-04-291-0/+1
| | | | | | | | | | | | | | | | 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>
* | x86: Add detection of the AES and SHA New InstructionsThiago Macieira2017-02-211-0/+2
|/ | | | | | | | | | | | | | | | | | | The AES instructions were first introduced with the Westmere shrink (22nm) of the Nehalem architecture. The SHA instructions are still pending on Intel architecture, but is available on AMD family 17h (gcc argument -march=znver1). Both features operate on SSE registers, so that's why the MSVC command- line argument is the SSE2 one and the configure-time tests depend on features.sse2. The qmake feature names end in "ni" because "aes" and "sha" are too simple and could clash with other uses. The QT_COMPILER_SUPPORTS_ macro doesn't have the "NI" suffix because it has to match the GCC/Clang predefined macro. Change-Id: I445bb15619f6401494e8fffd149dbd1f862ff51c Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
* Use native support for fp16 where availableAllan Sandfeld Jensen2017-02-161-0/+1
| | | | | | | | | | Use F16C or ARM FP16 if available at compile time. Configure check added because older clang compilers have F16C defines and flags but not all the intrinsics. Change-Id: I71f358b8fd003e70ab8fcf35097414591e485112 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Merge remote-tracking branch 'origin/5.8' into 5.9Liang Qi2017-02-081-0/+2
|\ | | | | | | | | | | | | | | Conflicts: configure.json mkspecs/win32-icc/qmake.conf Change-Id: Ibf40546b024d644c7d9ed490bee15b82597f4d3f
| * Fix MIPS DSP configurationAllan Sandfeld Jensen2017-01-271-0/+2
| | | | | | | | | | | | | | | | | | The patch fixes a number of bugs in code, and removes dead logic clarifying that MIPS DSP, like ARM NEON, has no runtime detecton. Change-Id: If2f4eea68da5b2eaa80b8e9c8258206d8c1b7173 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* | Optimize debug builds when -Og is availableAllan Sandfeld Jensen2017-01-261-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | MinGW: reuse gcc-base.conf and g++-base.confEric Lemanissier2016-11-291-3/+3
|/ | | | | | | | | it allows using optimize_full, ltcg and sanitizers Change-Id: I3ccf8257145c7d8800c2ebe98c5ac5adcec0dc9d Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
* configure: Add support for detecting AVX512 instructionsThiago Macieira2015-09-251-0/+9
| | | | | | | | | | | | | | | | | Tested on Linux with Clang 3.7, GCC 4.9, 5.1 and 6.0, ICC 16 beta; on OS X with Clang-XCode 6.4, ICC 16 beta; on Windows with MSVC 2013 and ICC 15. MinGW is not tested. GCC 4.9: AVX512F AVX512ER AVX512CD AVX512PF GCC 5 & 6: AVX512F AVX512ER AVX512CD AVX512PF AVX512DQ AVX512BW AVX512VL AVX512IFMA AVX512VBMI Clang 3.7: AVX512F AVX512ER AVX512CD Clang-XCode: <none> ICC 15 & 16: AVX512F AVX512ER AVX512CD AVX512PF AVX512DQ AVX512BW AVX512VL MSVC 2013: <none> Change-Id: Ib306f8f647014b399b87ffff13f1da1b161c31d7 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Merge remote-tracking branch 'origin/5.4' into merge5.5Allan Sandfeld Jensen2015-05-081-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | Conflicts: src/corelib/global/qglobal.h src/corelib/io/qnoncontiguousbytedevice_p.h src/gui/image/qjpeghandler.cpp src/network/access/qhttpthreaddelegate_p.h tests/auto/corelib/io/qlockfile/tst_qlockfile.cpp tests/auto/widgets/widgets/qmenubar/BLACKLIST Change-Id: I01de8c1c28efcedfd7953d05025f54802dc08ab3
| * Require -fPIC instead of just -fPIE for -reduce-relocationsThiago Macieira2015-05-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GCC 5 combined with a recent binutils have a new optimization that allows them to generate copy relocations even in -fPIE code. Clang has the same functionality when compiling an executable with -flto. We need to let the compilers know that they cannot use copy relocations, so they need to use really position-independent code. Position independent code throughout is not really required. We just need the compilers to use position-independent access to symbols coming from the Qt libraries, but there's currently no other way of doing that. Task-number: QTBUG-45755 Change-Id: I0d4913955e3745b69672ffff13db5df7377398c5 Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com> Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
* | Move QMAKE_CXXFLAGS_RELEASE_WITH_DEBUGINFO definition to gcc-base.confRomain Pokrzywka2015-04-301-0/+3
| | | | | | | | | | | | | | | | | | | | The flags are the same across all GCC flavors so put the definition in the common gcc-base.conf instead of duplicating it in g++-base.conf and clang.conf Change-Id: I1ba2c3c314d3a02b559c384aecef74240f69f659 Reviewed-by: Allan Sandfeld Jensen <allan.jensen@theqtcompany.com> Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
* | Fix leaking ISA extensions in LTCG buildsAllan Sandfeld Jensen2015-03-041-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Due to common subexpression elimination instruction set extensions may leak from the objects where they were enabled when doing link-time optimizations. To avoid that this patch disables LTCG/LTO on files built with extra instruction set extensions. Change-Id: Ie34ad900be7fb04a0dc4d3562187ee170c183333 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* | Clean up ltcg.prf with variables, including a new static modeThiago Macieira2015-01-111-1/+8
| | | | | | | | | | | | | | | | | | | | By using the special "ar" and "ranlib" tools, the symbol table is made visible, so we don't need fat LTO binaries. Since we need to store the new tool names, we may as well clean up ltcg.prf with variable names for the fat mode too. Change-Id: I7e53af0c74a3d069313f38500b72538af1d61128 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
* | Add support for gcc/clang's sanitize featuresPeter Kümmel2014-10-021-0/+2
|/ | | | | | | | | | | | | | | GCC and Clang support compiler intrinsic error detections tools: address, memory, thread, undefined Let users conveniently enable it in qmake, for instance with CONFIG += sanitizer sanitize_address Also add a -sanitize [...] option to configure to use it by default for both the Qt libraries, and user applications. [ChangeLog][configure] Added support for GCC/Clang -fsanitize= options Change-Id: Ie5418abcdf41842566df510d7707e41739e66f87 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
* Remove the last remnants of iWMMXt in QtThiago Macieira2014-08-051-1/+0
| | | | | | | | This code hasn't been tested for at least 4 years. It's not maintained and probably doesn't work. Change-Id: I4b9a5179e34111b400914f91caa6b741b69771bb Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
* Add link-time optimization support for Clang, GCC and ICCThiago Macieira2014-07-231-0/+3
| | | | | | | | | | | | | | | GCC currently requires fat object files for static libraries, since the linker would otherwise not load the .o file from the archive at all and the linking would fail with a lot of undefined references. Clang on Linux also needs this, but it has no equivalent flag, so enabling LTCG for Clang on static libraries will result in linker error. This commit does not add support for enabling it in configure. It can be enabled on a per-project basis by doing CONFIG += ltcg or by passing -config ltcg to qmake's command-line. Change-Id: I52cf99f1ed9f1701e23a3b457ba3502fd28126ce Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
* Make the use of -ffunction-sections more generic in QtThiago Macieira2014-05-191-0/+2
| | | | | | | | | | | Move it from bootstrap.pro into qt_module.prf so it will apply to any other bootstrapped libraries, like libQmlDevTools. Variable called "SPLIT_SECTIONS" because -fdata-sections could be added in the future, if it proves to be a benefit. Change-Id: I3fbb004f111620a84e58e9112e9bce3afd95631e Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
* Add optimize_full qmake config optionAllan Sandfeld Jensen2014-03-061-1/+4
| | | | | | | | | | | | | | | | | | | 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>
* Add support for using -isystem in qmakeThiago Macieira2014-01-201-0/+1
| | | | | | | | | This commit will make qmake use -isystem automatically for any compilers that declare support for it for any paths that are listed in QMAKE_DEFAULT_INCDIRS. Change-Id: I36fefc6d5bba61671f65669f0ea42704b3c3cf31 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
* Fix '=' alignment and replace tabs in *.conf (whitespace only change)Axel Waggershauser2013-03-271-24/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace all tabs with proper space characters and consistently align the '=' characters. The default alignment for the '=' of 25 characters has been left as is to get a minimal diff. Lines with the '=' further to the right and those belonging to 'proper code (TM)' have not been touched. The work was mostly done using the following python script (might come in handy again...): import sys, re indent_eq = 25 + 0*4 # 25 characters was the most widely used indentation for the '=' character p = re.compile(r'(\w+)[ \t]*([\-\+]?)(=$|= )[ \t]*(.*$)') for fn in sys.argv[1:]: with open(fn, 'r+') as f: lines = [] nl_count = 0 continuity_indent = None for l in f: m = p.match(l) nl = l if m: n_spaces = max(m.start(3), indent_eq - 1) - len(m.group(2)) - len(m.group(1)) if m.group(2) and m.start(2) >= indent_eq-1 and m.start(2) % 4 == 0: n_spaces -= 1 # left-shift '+=' by one if the '+' is aligned to a multiple of 4 n_spaces = max(1, n_spaces) # we want at least one space before '='/'+=' nl = m.group(1) + ' '*n_spaces + ''.join(m.group(2,3,4)) + '\n' continuity_indent = nl.find('= ') + 2 if l[-2] == '\\' else None # remember indent on '\\$' elif continuity_indent: nl = ' '*continuity_indent + l.lstrip() if l[-2] != '\\': # check when to stop the continuation continuity_indent = None elif l.startswith('#'): nl = l.expandtabs(2) if l != nl: nl_count += 1 lines.append(nl) if nl_count > 0: print fn, nl_count, len(lines) f.seek(0) f.writelines(lines) f.truncate() Change-Id: I1d2870d0a2fe2e30d398c140fe523e69dd20c81b Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
* Whitespace cleanup: remove trailing whitespaceAxel Waggershauser2013-03-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Remove all trailing whitespace from the following list of files: *.cpp *.h *.conf *.qdoc *.pro *.pri *.mm *.rc *.pl *.qps *.xpm *.txt *README excluding 3rdparty, test-data and auto generated code. Note A): the only non 3rdparty c++-files that still have trailing whitespace after this change are: * src/corelib/codecs/cp949codetbl_p.h * src/corelib/codecs/qjpunicode.cpp * src/corelib/codecs/qbig5codec.cpp * src/corelib/xml/qxmlstream_p.h * src/tools/qdoc/qmlparser/qqmljsgrammar.cpp * src/tools/uic/ui4.cpp * tests/auto/other/qtokenautomaton/tokenizers/* * tests/benchmarks/corelib/tools/qstring/data.cpp * util/lexgen/tokenizer.cpp Note B): in about 30 files some overlapping 'leading tab' and 'TAB character in non-leading whitespace' issues have been fixed to make the sanity bot happy. Plus some general ws-fixes here and there as asked for during review. Change-Id: Ia713113c34d82442d6ce4d93d8b1cf545075d11d Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
* Rename gcc-base-macx.conf to gcc-base-mac.conf and use it for iOS as wellTor Arne Vestbø2013-03-051-3/+2
| | | | | | | | | | The only difference between the two is that iOS append @executable_path/ to QMAKE_LFLAGS_SONAME, but since shared libraries are not supported on iOS anyways, this is not really something we have to care about. Change-Id: I4797a4dfb94d9b3af03af22618351b98b48f8255 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com> Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
* Move the SSE2/AVX/Neon/etc. flags into the compiler mkspecsThiago Macieira2012-06-121-0/+10
| | | | | | | | | | | | | This allows us to have different flags for the compilers for supporting the same feature. For example, the official flag in GCC to support AVX2 is -mavx2, but ICC does not support it (yet), requiring -march=core-avx2 or -xCORE-AVX2. That flag, instead, enables support for all the features that the "Core-AVX2" processor (codename Haswell) will support. And clearly, the MSVC flags are different. Change-Id: I33b6d8617520925e807747180a8dbaafd79b7a9a Reviewed-by: Sean Harmer <sean.harmer@kdab.com> Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
* turn off exceptions by default where they aren't requiredLars Knoll2012-05-171-1/+3
| | | | | | | | | | | | | This significantly reduces the size of the generated code in places where we don't need exceptions. The -(no-)exceptions configure flag has been removed in the process, as there is now a fine grained way to control this on a per module level, and Qt is being compiled without exceptions in most places. Change-Id: I99a15c5d03339db1fbffd4987935d0d671cdbc32 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Added mkspecs for iOS.Qt4iOS2012-04-261-0/+1
| | | | | | | | | | Modified common MacOS gcc config for iOS compatibility. Added iOS mkspecs for iOS devices and simulator using G++, LLVM-G++ or CLANG compilers. Change-Id: If0a0b1a3ce4e0dc4db319a315e227a9d31549399 Reviewed-by: Morten Johan Sørvig <morten.sorvig@nokia.com> Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
* Force -fPIE on ELF if Qt is built with reduced relocationsOlivier Goffart2012-02-101-0/+2
| | | | | | | | | | | | | | | | Put in qconfig.h whether qt is compiled with reduced relocations. When using -Bsymbolic-functions (enabled by default on Qt) but not -fPIE, the comparison of the function pointers fail because the addresses are different in Qt, and in the executable. Hence we now enable -fPIE by default on qmake, and force a compilation error when it is not enabled and built with reduced relocations. Done-with: Sune Vuorela <sune@vuorela.dk> Change-Id: Ib3fdba06fab6e8a93b75b4c6cf16cc973ab335db Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Initial import from the monolithic Qt.Qt by Nokia2011-04-271-0/+60
This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12
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