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/*!

    \page compiler-notes.html

    \ingroup platform-specific

    \title Compiler Notes

    \brief Information about the C++ compilers and tools used to build Qt.

    This page contains information about the C++ compilers and tools used

    to build Qt on various platforms.

    \tableofcontents

    Please refer to the \l{Platform Notes} for information on the platforms

    Qt is currently known to run on, and see the \l{Supported Platforms}

    page for information about the status of each platform.

    If you have anything to add to this list or any of the platform or

    compiler-specific pages, please submit it via the \l{Bug Report Form}

    or through the \l{Public Qt Repository}.

    \section1 Supported Features

    Not all compilers used to build Qt are able to compile all modules. The following table

    shows the compiler support for five modules that are not uniformly available for all

    platforms and compilers.

    \table

    \header \o Compiler \o{5,1} Features

    \header \o                  \o Concurrent \o XmlPatterns \o WebKit   \o CLucene  \o Phonon

    \row    \o g++ 3.3          \o            \o \bold{X}    \o          \o \bold{X} \o \bold{X}

    \row    \o g++ 3.4 and up   \o \bold{X}   \o \bold{X}    \o \bold{X} \o \bold{X} \o \bold{X}

    \row

    \row    \o SunCC 5.5        \o            \o             \o          \o \bold{X} \o \bold{X}

    \row

    \row    \o aCC series 3     \o            \o             \o          \o \bold{X} \o \bold{X}

    \row    \o aCC series 6     \o \bold{X}   \o \bold{X}    \o \bold{X} \o \bold{X} \o \bold{X}

    \row    \o xlC 6            \o            \o             \o          \o \bold{X} \o \bold{X}

    \row    \o Intel CC 10      \o \bold{X}   \o \bold{X}    \o \bold{X} \o \bold{X} \o \bold{X}

    \row

    \row    \o MSVC 2003        \o \bold{X}   \o \bold{X}    \o          \o \bold{X} \o \bold{X}

    \row    \o MSVC 2005 and up \o \bold{X}   \o \bold{X}    \o \bold{X} \o \bold{X} \o \bold{X}

    \endtable

    \target GCC

    \section1 GCC

    \section2 GCC on Windows (MinGW)

    We have tested Qt with this compiler on Windows XP.

    The minimal version of MinGW supported is:

    \list

    \o GCC 3.4.2

    \o MinGW runtime 3.7

    \o win32api 3.2

    \o binutils 2.15.91

    \o mingw32-make 3.80.0-3

    \endlist

    \section2 GCC 4.0.0

    The released package of the compiler has some bugs that lead to miscompilations.

    We recommend using GCC 4.0.1 or later, or to use a recent CVS snapshot of the

    GCC 4.0 branch. The version of GCC 4.0.0 that is shipped with Mac OS X 10.4

    "Tiger" is known to work with Qt for Mac OS X.

    \section2 HP-UX

    The hpux-g++ platform is tested with GCC 3.4.4.

    \section2 Solaris

    Please use GCC 3.4.2 or later.

    \section2 Mac OS X

    Please use the latest GCC 3.3 from Apple or a later version of GCC 3.

    The gcc 3.3 that is provided with Xcode 1.5 is known to generate bad code.

    Use the November 2004 GCC 3.3 updater \l{http://connect.apple.com}{available from Apple}.

    \section2 GCC 3.4.6 (Debian 3.4.6-5) on AMD64 (x86_64)

    This compiler is known to miscompile some parts of Qt when doing a

    release build. There are several workarounds:

    \list 1

    \o Use a debug build instead.

    \o For each miscompilation encountered, recompile the file, removing the -O2 option.

    \o Add -fno-gcse to the QMAKE_CXXFLAGS_RELEASE.

    \endlist

    \section1 HP ANSI C++ (aCC)

    The hpux-acc-32 and hpux-acc-64 platforms are tested with aCC A.03.57. The

    hpuxi-acc-32 and hpuxi-acc-64 platforms are tested with aCC A.06.10.

    \section1 Intel C++ Compiler

    Qt supports the Intel C++ compiler on both Windows and Linux.

    However, there are a few issues on Linux (see the following

    section).

    \section2 Intel C++ Compiler for Linux

    Nokia currently tests the following compilers:

    \list

    \o Intel(R) C++ Compiler for applications running on IA-32,

    Version 10.1 Build 20080602 Package ID: l_cc_p_10.1.017

    \o Intel(R) C++ Compiler for applications running on Intel(R) 64,

    Version 10.1 Build 20080602 Package ID: l_cc_p_10.1.017

    \endlist

    We do not currently test the IA-64 (Itanium) compiler.

    \section2 Known Issues with Intel C++ Compiler for Linux

    \list

    \o Precompiled header support does not work in version 10.0.025

       and older. For these compilers, you should configure Qt with

       -no-pch. Precompiled header support works properly in version

       10.0.026 and later.

    \o Version 10.0.026 for Intel 64 is known to miscompile qmake when

       building in release mode. For now, configure Qt with

       -debug. Version 10.1.008 and later can compile qmake in release

       mode.

    \o Versions 10.1.008 to 10.1.015 for both IA-32 and Intel 64 are

       known crash with "(0): internal error: 0_47021" when compiling

       QtXmlPatterns, QtWebKit, and Designer in release mode. Version

       10.1.017 compiles these modules correctly in release mode.

    \endlist

    \section2 Intel C++ Compiler (Windows, Altix)

    Qt 4 has been tested successfully with:

    \list

    \o Windows - Intel(R) C++ Compiler for 32-bit applications,

       Version 8.1 Build 20050309Z Package ID: W_CC_PC_8.1.026

    \o Altix - Intel(R) C++ Itanium(R) Compiler for Itanium(R)-based

       applications Version 8.1 Build 20050406 Package ID: l_cc_pc_8.1.030

    \endlist

    We currently only test the Intel compiler on 32-bit Windows versions.

    \section1 MIPSpro (IRIX)

    \bold{IRIX is an unsupported platform. See the \l{Supported Platforms} page

    and Qt's Software's online \l{Platform Support Policy} page for details.}

    Qt 4.4.x requires MIPSpro version 7.4.2m.

    Note that MIPSpro version 7.4.4m is currently not supported, since it has

    introduced a number of problems that have not yet been resolved.

    We recommend using 7.4.2m for Qt development. However, please note the

    unsupported status of this platform.

    \target Sun Studio

    \section1 Forte Developer / Sun Studio (Solaris)

    \section2 Sun Studio

    Qt is tested using Sun Studio 12 (Sun CC 5.9). Go to

    \l{Sun Studio Patches} page on Sun's Web site to download

    the latest patches for your Sun compiler.

    Please note that Qt 4.6 is stricter in its STL requirements and

    that the default STL implementation used by Sun CC does not pass

    those requirements. This does not affect binary compatibility and

    you can continue to use STL in your own code, but Qt's

    STL-compatibility functions will be disabled.

    Sun CC ships with a secondary STL implementation (called stlport4)

    which is standards-compliant and can be used by Qt. You can enable

    it by passing the -library=stlport4 option to the compiler. Note

    that this does not affect Qt's binary compatibility, but it may

    affect that of other libraries and programs that use STL.

    \section2 Sun WorkShop 5.0

    Sun WorkShop 5.0 is not supported with Qt 4.

    \section1 Visual Studio (Windows)

    We do most of our Windows development on Windows XP, using Microsoft

    Visual Studio .NET 2005 and Visual Studio 2008 (both the 32- and 64-bit

    versions).

    Qt works with the Standard Edition, the Professional Edition and Team

    System Edition of Visual Studio 2005.

    We also test Qt 4 on Windows XP with Visual Studio .NET and Visual Studio 2003.

    In order to use Qt with the Visual Studio 2005/2008 Express Edition you need

    to download and install the platform SDK. Due to limitations in the

    Express Edition it is not possible for us to install the Qt Visual

    Studio Integration. You will need to use our command line tools to

    build Qt applications with this edition.

    The Visual C++ Linker doesn't understand filenames with spaces (as in

    \c{C:\Program files\Qt\}) so you will have to move it to another place,

    or explicitly set the path yourself; for example:

    \snippet doc/src/snippets/code/doc_src_compiler-notes.qdoc 0

    If you are experiencing strange problems with using special flags that

    modify the alignment of structure and union members (such as \c{/Zp2})

    then you will need to recompile Qt with the flags set for the

    application as well.

    If you're using Visual Studio .NET (2002) Standard Edition, you should be

    using the Qt binary package provided, and not the source package.

    As the Standard Edition does not optimize compiled code, your compiled

    version of Qt would perform suboptimally with respect to speed.

    With Visual Studio 2005 Service Pack 1 a bug was introduced which

    causes Qt not to compile, this has been fixed with a hotfix available

    from Microsoft. See this

    \l{http://qt.nokia.com/developer/faqs/faq.2006-12-18.3281869860}{Knowledge Base entry}

    for more information.

    \section1 IBM xlC (AIX)

    The makeC++SharedLib utility must be in your PATH and be up to date to

    build shared libraries. From IBM's

    \l{http://www.redbooks.ibm.com/abstracts/sg245674.html}{C and C++ Application Development on AIX}

    Redbook:

    \list

    \o "The second step is to use the makeC++SharedLib command to create the

       shared object. The command has many optional arguments, but in its

       simplest form, can be used as follows:"

       \snippet doc/src/snippets/code/doc_src_compiler-notes.qdoc 1

    \o "The full path name to the command is not required; however, to avoid

       this, you will have to add the directory in which it is located to

       your PATH environment variable. The command is located in the

       /usr/vacpp/bin directory with the VisualAge C++ Professional for AIX,

       Version 5 compiler."

    \endlist

    \section2 VisualAge C++ for AIX, Version 6.0

    Make sure you have the

    \l{http://www-1.ibm.com/support/search.wss?rs=32&tc=SSEP5D&dc=D400}{latest upgrades}

    installed.

*/