[1085] | 1 | This is Qt version 4.7.3 for OS/2 and eCS.
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[144] | 2 |
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[397] | 3 | This document contains a brief information on the OS/2 version of the Qt
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[524] | 4 | library. Please read it carefully before starting your work. You may also
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| 5 | visit the project page at
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[144] | 6 |
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| 7 | http://svn.netlabs.org/qt4/wiki
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| 8 |
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[188] | 9 | to get more information and the latest news and also to report bugs.
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[144] | 10 |
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[397] | 11 | To get a brief list of OS/2-specific changes from release to release
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| 12 | please see the CHANGES.OS2 file included in this distribution.
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[144] | 13 |
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[1121] | 14 | IMPORTANT NOTE:
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[188] | 15 |
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[1121] | 16 | Please consider reading section called "USING OFFICIAL BINARY QT ARCHIVES"
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| 17 | below before getting into details of the manual compilation of the
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| 18 | Qt toolkit -- to learn the easiest way of getting it work.
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[397] | 19 |
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[1121] | 20 |
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| 21 |
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[144] | 22 | REQUIREMENTS
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| 23 |
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[397] | 24 | In order to compile the Qt library and Qt-based applications, you will need
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| 25 | the following tools:
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[144] | 26 |
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| 27 | - One of the OS/2 Warp 4, OS/2 Warp 4.5 or eComStation operating systems.
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| 28 |
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[1121] | 29 | - GCC compiler version 4.4.5 for OS/2 or above, patched OpenWatcom linker and
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[740] | 30 | GNU Make 3.81beta1 or above. The GCC compiler must be set up to use the
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| 31 | OpenWatcom linker for linking.
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[144] | 32 |
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[740] | 33 | If you do not have a working GCC environment with the above requirements, it
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[1121] | 34 | is recommended to download a ready-to-use GCC 4.4.5 distribution from here:
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[524] | 35 |
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[1121] | 36 | ftp://ftp.netlabs.org/pub/qt4/gcc-4_4_5-complete-20110303.zip
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[524] | 37 |
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[740] | 38 | This distribution includes all tools necessary to compile and build the Qt
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| 39 | library from the source code. Just follow the installation instructions
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| 40 | contained in the README file inside this ZIP archive to set up the GCC
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| 41 | environment.
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[524] | 42 |
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[740] | 43 | Please note that starting from Qt 4.6.2, support for GCC 3.3.5 and earlier
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| 44 | versions of the compiler has been dropped and the Qt library will most
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| 45 | likely not build if you use one of these compilers. Later versions prior to
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| 46 | GCC 4.4.2 may work but they are not tested and not supported.
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[950] | 47 |
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[894] | 48 | - IBM RC (Resource Compiler) Version 5.00.007 (comes with OS/2 Toolkit 4.5)
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| 49 | or Version 4.00.011 (comes with eCS 2.0). Other versions may not work
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| 50 | correctly.
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[524] | 51 |
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[740] | 52 | There is also a set of optional tools which are necessary to enable the selected
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| 53 | features of the Qt library. If these tools are missing, the Qt configuration
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| 54 | script (discussed in section "COMPILING QT" below) will automatically disable
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| 55 | the corresponding feature:
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[144] | 56 |
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[983] | 57 | - Perl 5.8.2 or above. This is required if you want to perform a shadow build
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| 58 | of the Qt library (which is a recommended way to go). Please refer to
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| 59 | section "COMPILING QT" for more information about shadow builds. Recent
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| 60 | builds of Perl for OS/2 are available here:
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| 61 |
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| 62 | http://os2ports.smedley.info/index.php?page=perl
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| 63 |
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[954] | 64 | - MAPSYM 4.00.000 (Oct 4 2001) to enable generation of symbol (.SYM) files for
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| 65 | DLLs and executables. This tool comes with OS/2 Toolkit 4.5. Note that other
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| 66 | versions of this tool may not work correctly.
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[144] | 67 |
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[954] | 68 | - LxLite 1.3.3 or above (not tested) to enable the compression of DLLs and
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| 69 | executables (which saves hard disk space and application startup time). If
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| 70 | you use a recent version of eComStation (e.g. 2.0 rc6) you will already have
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| 71 | LxLite installed. Otherwise, you may take it from here:
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| 72 |
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[740] | 73 | http://www.os2site.com/sw/util/archiver/lxlt133.zip
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[144] | 74 |
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[1058] | 75 | - CUPS 1.4.8 or later to support printing in Qt. The CUPS libraries are
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[789] | 76 | available at:
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[576] | 77 |
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[1058] | 78 | http://sourceforge.net/projects/ecsports/files/CUPS/cups-1.4.8-os2-20110831.zip/download
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| 79 | http://svn.netlabs.org/ecups/wiki/CupsPort
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[576] | 80 |
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[788] | 81 | - OpenSSL 0.9.8o or later to support OpenSSL in Qt. The OpenSSL libraries are
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| 82 | available at:
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[314] | 83 |
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[789] | 84 | http://bauxite.sakura.ne.jp/tmp/os2/openssl-1.0.0a-os2knix-20100706-runtime.zip
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[788] | 85 | http://bauxite.sakura.ne.jp/tmp/os2/openssl-1.0.0a-os2knix-20100706-dev.zip
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| 86 |
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[792] | 87 | - MySQL 5.1 or later for the MySQL Qt plugin. The MySQL libraries are
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| 88 | available at:
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[788] | 89 |
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[792] | 90 | http://download.smedley.info/mysql-5.1.51-os2-20101001.zip
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[788] | 91 |
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[1058] | 92 | Linking against this MySQL build also requires pthread.lib:
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[788] | 93 |
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[1058] | 94 | http://web.os2power.com/download/lib/pthread-20100217-os2.zip
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| 95 |
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| 96 | Note that you will also need the above OpenSSL libraries to be able to use
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| 97 | this MySQL build. The MySQL Qt plugin itself will require OpenSSL DLLs in
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| 98 | your LIBPATH at runtime.
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| 99 |
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[803] | 100 | - PostgersSQL 9.0.1 or later to support the PostgresSQL Qt plugin. The
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| 101 | PostgresSQL libraries are available at:
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[792] | 102 |
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[817] | 103 | http://download.smedley.info/postgresql-9.0.1-os2-20101108.zip
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[792] | 104 |
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[817] | 105 | Note that you will also need libc064x.dll for this PostgresSQL build:
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[803] | 106 |
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| 107 | http://download.smedley.info/libc064x.zip
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| 108 |
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[824] | 109 | Note that you will also need the above OpenSSL libraries and pthread.lib to
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| 110 | be able to use this PostgresSQL build. The PostgresSQL Qt plugin itself will
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| 111 | require OpenSSL DLLs in your LIBPATH at runtime.
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[803] | 112 |
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| 113 |
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[824] | 114 |
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[740] | 115 | SETTING UP THE ENVIRONMENT
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[397] | 116 |
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[740] | 117 | First of all, make sure that your GCC environment is set up and meets the
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| 118 | specified requirements. To perform a quick check, you may run the following
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| 119 | command:
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[397] | 120 |
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[740] | 121 | gcc --version && make --version && wl /version
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[397] | 122 |
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[740] | 123 | If the setup is done properly, it will print the versions of the key tools
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| 124 | to the console.
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[144] | 125 |
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[740] | 126 | The next step is to set up the Qt environment. If you installed the Qt
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| 127 | development libraries from the WPI archive (refer to section "USING OFFICIAL
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| 128 | BINARY QT ARCHIVES" below for more details about existing WPI archives), you
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| 129 | will only need to run the supplied "QtEnv.cmd" script which will do all the
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| 130 | setup job for you. The script is located in the directory where you installed
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| 131 | the developmnent libraries (or in the WPS folder created by the WPI installer).
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[760] | 132 | Execute this script in a command line session to make it ready for building
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| 133 | Qt 4 applications (for example, using the "qmake" command follwed by "make"
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| 134 | for applications based on qmake project files which most of them are). If you
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| 135 | go that way, you may skip the rest of this section and proceed directly to
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[788] | 136 | section "USING OFFICIAL BINARY QT ARCHIVES" below.
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[524] | 137 |
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[740] | 138 | If you use the full source code ZIP distribution of the Qt library or work
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| 139 | directly with the Qt SVN tree, you will need to set up the environment yourself
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| 140 | by performing the following steps:
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[259] | 141 |
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[740] | 142 | - Add the "bin" subdirectory of the directory where you unpacked the Qt4
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| 143 | source tree to PATH and BEGINLIBPATH, like this:
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[144] | 144 |
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[740] | 145 | set PATH=D:\Coding\Qt4\bin;%PATH%
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| 146 | set BEGINLIBPATH=D:\Coding\Qt4\bin;%BEGINLIBPATH%
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| 147 |
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| 148 | - Add the system DLLs to the GCC library path with the following command:
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| 149 |
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| 150 | set LIBRARY_PATH=C:\OS2\DLL;C:\MPTN\DLL;%LIBRARY_PATH%
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| 151 |
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| 152 | where C: is your boot drive.
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| 153 |
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[152] | 154 | - Make sure CMD.EXE is your command line processor (the generated makefiles
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[258] | 155 | will rely on its 'copy', 'if' and other commands). If you have a Unix shell
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| 156 | (SH.EXE) in your environment, you may need to force GNU make to use CMD.EXE
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[740] | 157 | by executing the followingn command:
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[152] | 158 |
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[740] | 159 | set MAKESHELL=C:\OS2\CMD.EXE
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[144] | 160 |
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[740] | 161 | where C: is your boot drive.
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[258] | 162 |
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[740] | 163 | Note that the QTDIR environment variable used in previous Qt versions is not
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| 164 | used in Qt4 anymore. Therefore, there is no need to set this variable
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| 165 | explicitly.
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[524] | 166 |
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[740] | 167 | There is also no need to set the QMAKESPEC variable explicitly. If it is absent,
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| 168 | qmake will use the specification stored in the <Qt4_Home>/mkspecs/default
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| 169 | directory, which on OS/2 always refers to the "os2-g++" specification, the only
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| 170 | one supported at the present time.
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[524] | 171 |
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[740] | 172 | NOTE:
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| 173 |
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| 174 | It is especially important to make sure that there are no traces of any
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| 175 | other Watcom or OpenWatcom installation in the environment where you build
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| 176 | Qt as it will interfere with the patched OpenWatcom linker we use. This
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| 177 | basically means removing all environment variables containing "WATCOM" in
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| 178 | their names and also removing references to all those Watcom installations
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| 179 | from PATH.
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| 180 |
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| 181 |
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| 182 |
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| 183 | SETTING UP OPTIONAL TOOLS
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| 184 |
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| 185 | The following list describes the steps necessary to set up the optional tools
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| 186 | that the Qt library depends on:
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| 187 |
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[789] | 188 | - Unzip the CUPS libraries to some directory and set the following environment
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| 189 | variables to tell the Qt configure script its location:
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[576] | 190 |
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[792] | 191 | set CUPS_INCLUDEPATH=<path_to_CUPS>\include
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[1058] | 192 | set CUPS_LIBS=
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[576] | 193 |
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[1058] | 194 | Note that you will also need to add the location of cups.dll to BEGINLIBPATH
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| 195 | (if it is not already in your LIBPATH) so that Qt applications can find it
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| 196 | at runtime:
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| 197 |
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| 198 | set BEGINLIBPATH=<path_to_CUPS>\sbin;%BEGINLIBPATH%
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| 199 |
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[788] | 200 | - Unzip the OpenSSL libraries to some directory and set the following
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| 201 | environment variables to tell the Qt configure script its location:
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[144] | 202 |
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[792] | 203 | set OPENSSL_INCLUDEPATH=<path_to_OpenSSL>\include
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[788] | 204 | set OPENSSL_LIBS=
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[144] | 205 |
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[1058] | 206 | Note that you will also need to add the location of OpenSSL DLLs to
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| 207 | BEGINLIBPATH (if they are not already in your LIBPATH) so that Qt
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| 208 | applications can find them at runtime:
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[788] | 209 |
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[792] | 210 | set BEGINLIBPATH=<path_to_OpenSSL>\dll;%BEGINLIBPATH%
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[788] | 211 |
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[792] | 212 | - Unzip the MySQL archive to some directory and set the following environment
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| 213 | variables to tell the Qt configure script the library location:
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[788] | 214 |
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[792] | 215 | set MYSQL_INCLUDEPATH=<path_to_MySQL>\include'
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| 216 | set MYSQL_LIBS=-L<path_to_MySQL>\lib -lmysqlclient_r -L<path_to_OpenSSL>\lib -llibssl -llibcrypto -L<path_to_pthread> -lpthread
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[788] | 217 |
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[824] | 218 | Note that you will also need to place OpenSSL DLLs to BEGINLIBPATH (as
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| 219 | described above) because the MySQL plugin links statically to them and Qt
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| 220 | will not be able to load it otherwise.
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| 221 |
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[803] | 222 | - Unzip the PostgresSQL archive to some directory and set the following
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| 223 | environment variables to tell the Qt configure script the library location:
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[792] | 224 |
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[803] | 225 | set PSQL_INCLUDEPATH=<path_to_PostgresSQL>\include'
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| 226 | set PSQL_LIBS=-L<path_to_PostgresSQL>\lib -llibpq -L<path_to_OpenSSL>\lib -llibssl -llibcrypto -L<path_to_pthread> -lpthread
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| 227 |
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[824] | 228 | Note that you will also need to place OpenSSL DLLs to BEGINLIBPATH (as
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| 229 | described above) because the PostgresSQL plugin links statically to them and
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| 230 | Qt will not be able to load it otherwise.
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[803] | 231 |
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[824] | 232 | Note that you need to make sure that OpenSSL DLLs are in BEGINLIBPATH or in
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| 233 | LIBPATH before Qt attempts to load the SQL plugins for the first time. If it
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| 234 | fails to load them, it will cache a failure and will not retry even if the
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| 235 | plugins can be loaded later. To fix that, you need to delete the file
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| 236 | %HOME%\.config\Trolltech.ini where this cache is stored.
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[803] | 237 |
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[824] | 238 |
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| 239 |
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[397] | 240 | COMPILING QT
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| 241 |
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[983] | 242 | When the environment is set up as described above, you may build the Qt library.
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| 243 | There are two distinct ways of doing this: in the source tree or in a separate
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| 244 | directory of your choice. In the first case, all results of the build process
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| 245 | (intermediate object files as well as final executables and DLLs) will be placed
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| 246 | right in the source tree. In the second case, they will be placed in the
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| 247 | separate directory -- this is called a shadow build.
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[144] | 248 |
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[983] | 249 | Shadow builds are the recommended way to go because they keep the source
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| 250 | directories clean and also allow to use the same source tree for creating any
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| 251 | number of builds, each with its own build options.
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[144] | 252 |
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[983] | 253 | To perform a shadow build, do the following steps:
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[144] | 254 |
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[983] | 255 | 1. Create a directory outside the Qt4 source tree.
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[144] | 256 |
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[983] | 257 | 2. Go to that directory.
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[144] | 258 |
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[983] | 259 | 3. Type:
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[144] | 260 |
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[983] | 261 | <source_tree>\configure.cmd
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[243] | 262 |
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[983] | 263 | where <source_tree> is the directory containing the Qt4 source tree. This
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| 264 | will create all necessary configuration files, headers, Makefiles and will
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| 265 | also build the qmake tool which is necessary to control the rest of the
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| 266 | build process (note that building qmake will take some time).
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| 267 |
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| 268 | 4. Once the configure process is finished, type:
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| 269 |
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| 270 | make
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| 271 |
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| 272 | Note that by the default the shadow build will produce the release version of
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| 273 | the Qt library. This may be changed by passing command line options to
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[990] | 274 | configure.cmd at step 3. For example, the debug build can be requested using
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| 275 | the '-debug' option. For a full list of options supported by configure.cmd,
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| 276 | type:
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[983] | 277 |
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[990] | 278 | configure.cmd -h
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| 279 |
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[983] | 280 | To perform a normal build, you execute 'configure.cmd' followed by 'make' right
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| 281 | in the directory containing the Qt4 source tree. The default in this case is to
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| 282 | build both the debug and release versions of the Qt library.
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| 283 |
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| 284 | Please keep in mind that in case of the dual debug and release build (where both
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| 285 | flavors are stored in the same build directory), only DLL and LIB files will be
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| 286 | separated (because the debug versions of them will have the 'd' suffix in the
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| 287 | file name). Executable files are normally taken from the release build but,
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| 288 | since the file names are identical, sometimes they may be overwritten by the
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| 289 | debug versions (e.g. when you rebuild parts of the library later). For this
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| 290 | reason, performing dual builds is not recommended.
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| 291 |
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| 292 | The Qt library is huge so the build process will take several hours (or even
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| 293 | several dozen of hours) depending on your hardware and configure options.
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| 294 |
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[740] | 295 | Once the library is successfully built, you may try to compile the demos and
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| 296 | examples by visiting the individual example subdirectories in the source tree
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[983] | 297 | and typing 'qmake' followed by 'make'.
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[144] | 298 |
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[402] | 299 | NOTE:
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[144] | 300 |
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[402] | 301 | This version of Qt for OS/2 includes the Extended system tray plugin for
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[314] | 302 | XCenter/eCenter which is necessary to enable Qt support for the special
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| 303 | notification area on the XCenter/eCenter panel (called the "system tray")
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| 304 | which is used by many long-running applications to display their status.
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| 305 | In order to activate this support, you need to install this plugin to your
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[1040] | 306 | XCenter or eCenter. The plugin is split in two DLLs, the plugin DLL and
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| 307 | the API DLL. Both are built as part of the normal build process and can be
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| 308 | found in the "src\3rdparty\os2\xsystray\tmp\dist" subdirectory of the Qt
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| 309 | build tree. In order to install them, do the following:
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[188] | 310 |
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[1040] | 311 | a. Copy "plugin\xsystray.dll" to "<XWorkplace_install>\plugins\xcenter\"
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| 312 | (on eComStation, this will be "C:\ecs\system\ewps\plugins\xcenter\"
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| 313 | where C: is your boot drive).
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[188] | 314 |
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[1040] | 315 | b. Copy "apilib\xsystray.dll" to a directory listed in LIBPATH.
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| 316 |
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[314] | 317 | b. Restart WPS.
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| 318 |
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| 319 | c. Add the "Extended system tray" widget to the XCenter/eCenter panel using
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| 320 | the XCenter context menu ('Create new widget').
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| 321 |
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| 322 | Note that if you upgrade from the previous version of the plugin then
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| 323 | please unlock xsystray.dll in the target folder using the UNLOCK.EXE
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| 324 | utility (which you can find in the LxLite package, for example) before
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| 325 | performing step a., otherwise the copy operation will fail.
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| 326 |
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[397] | 327 | IMPORTANT NOTE:
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[314] | 328 |
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[397] | 329 | Please take into account that the Qt library you build on your own as
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| 330 | described above is NOT intended for wide distribution with Qt applications
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| 331 | you port or create. Such private Qt builds help you develop Qt applications
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| 332 | (because you can easily debug your program and parts of the Qt framework at
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| 333 | the source level) but being widely distributed they will create a so-called
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| 334 | DLL hell when a program running on a user computer crashes because it picks
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| 335 | up a wrong build of the Qt library. This will happen because even a single
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| 336 | change to Qt configuration options may make your build binary incompatible
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| 337 | with another build. And even if you convince the user to isolate different
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[740] | 338 | DLLs (using LIBPATHSTRICT and BEGINLIBPATH) it will create another major
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| 339 | problem: two different Qt applications will load two different copies of Qt
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| 340 | into memory which will create an unnecessary overhead by doubling the
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| 341 | amount of used system resources.
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[314] | 342 |
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[397] | 343 | In order to nicely solve this problem, netlabs.org provides the official
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[1085] | 344 | binary builds of the Qt library distributed as RPM packages which are
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[397] | 345 | described in the next section.
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| 346 |
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| 347 |
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| 348 |
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[740] | 349 | USING OFFICIAL BINARY QT ARCHIVES
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[397] | 350 |
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[1085] | 351 | For your convenience, netlabs.org provides all components of the Qt toolkit in
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| 352 | the form of RPM packages. You may install latest versions of these packages
|
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| 353 | from the netlabs.org RPM repositories using the YUM tool. For example, this
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| 354 | command:
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[397] | 355 |
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[1085] | 356 | yum install qt4-devel-kit
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[397] | 357 |
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[1085] | 358 | will install the complete Qt development environment, including headers,
|
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| 359 | libraries, tools, examples and the Qt API documentaiton.
|
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[397] | 360 |
|
---|
[1085] | 361 | This environment is also a proper way to build Qt applications you want to
|
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| 362 | distribute because it guarantees that a proper version of the Qt runtime will
|
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| 363 | be used by your applications when they are installed on the end user's machine.
|
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[397] | 364 |
|
---|
[1085] | 365 | Buiding applications using this development environment is similar to using
|
---|
| 366 | your own build of Qt but it is simpler in many ways because you don't need to
|
---|
| 367 | set up paths to Qt tools and libraries and so on -- the RPM installation
|
---|
| 368 | procedure will do this for you.
|
---|
[397] | 369 |
|
---|
[1085] | 370 | If you don't have YUM or RPM installed, please visit the following page to
|
---|
| 371 | learn how to do that:
|
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[524] | 372 |
|
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[1085] | 373 | http://svn.netlabs.org/rpm
|
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[397] | 374 |
|
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| 375 |
|
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[408] | 376 |
|
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[397] | 377 |
|
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[541] | 378 | QMAKE CONFIG OPTIONS
|
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| 379 |
|
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[740] | 380 | The following CONFIG options of the qmake tool have a special meaning in OS/2:
|
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[541] | 381 |
|
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| 382 | windows Turns on generation of PM (WINDOWAPI) executables. By
|
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| 383 | default, this option is set for release builds that link
|
---|
| 384 | to the Qt GUI library.
|
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| 385 |
|
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| 386 | console Turns on generation of text mode (WINDOWCOMPAT) executables.
|
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| 387 | By default, this option is set when setting the "windows"
|
---|
| 388 | option is not appropriate (see above).
|
---|
| 389 |
|
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| 390 | In addition, qmake recognizes the following OS/2-specific CONFIG options:
|
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| 391 |
|
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| 392 | map Turns on generation of the .map files for executables and
|
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[957] | 393 | DLLs. Note that this option is not set by default.
|
---|
[541] | 394 |
|
---|
[954] | 395 | sym Turns on generation of the .sym files for executables and
|
---|
| 396 | DLLs. The option is turned on by default if configure.cmd
|
---|
| 397 | is able to find the MAPSYM tool in PATH.
|
---|
| 398 |
|
---|
[541] | 399 | exepack Turns on compression for executables and DLLs. The option is
|
---|
| 400 | turned on by default for release builds if configure.cmd
|
---|
[954] | 401 | is able to find a compression tool (LxLite) in PATH.
|
---|
[541] | 402 |
|
---|
| 403 | highmem Turns on high memory usage for dynamically allocated memory
|
---|
| 404 | in DLLs and executables. When this option is set, a special
|
---|
| 405 | compiler flag (-Zhigh-mem for GCC) is used to enable high
|
---|
| 406 | memory support in the C library (LIBC). This option is set
|
---|
| 407 | by default so that all Qt DLLs and Qt applications built
|
---|
| 408 | with qmake are enabled for high memory. Note that high
|
---|
| 409 | memory support must be enabled for all LIBC-based DLLs
|
---|
| 410 | linked to the executable as well as for the executable
|
---|
| 411 | itself: high memory usage will be disabled if one of them
|
---|
| 412 | votes against it.
|
---|
| 413 |
|
---|
[740] | 414 | export_all Cause the linker to export all public symbols in a generated
|
---|
| 415 | DLL. By default (when this option is absent), only the
|
---|
| 416 | symbols marked with the __declspec(dllexport) compiler
|
---|
| 417 | directive in the source files.
|
---|
[541] | 418 |
|
---|
| 419 |
|
---|
[740] | 420 |
|
---|
| 421 | PRINTING SUPPORT
|
---|
| 422 |
|
---|
| 423 | Starting with version 4.6.2, Qt for OS/2 supports printing through the CUPS
|
---|
| 424 | framework (provided that this support is enabled when building Qt, see the
|
---|
| 425 | respective sections in the beginning of this document). The OS/2 implementation
|
---|
| 426 | of the CUPS framework is provided by the eCUPS package available at
|
---|
| 427 | http://svn.netlabs.org/ecups/.
|
---|
| 428 |
|
---|
| 429 | The Qt Runtime detects the presence of eCUPS in the system on the fly and talks
|
---|
| 430 | to the CUPS daemon directly, bypassing the standard OS/2 printing subsystem.
|
---|
| 431 | This means that in order to print from Qt applications, you don't need to create
|
---|
| 432 | and configure printer objects using the standard OS/2 system printer setup
|
---|
| 433 | procedure -- you only need to install eCUPS and configure your printers in
|
---|
| 434 | there. Please refer to the eCUPS user manual to obtain the detailed instructions
|
---|
| 435 | on how to configure CUPS printers.
|
---|
| 436 |
|
---|
| 437 |
|
---|
| 438 |
|
---|
[870] | 439 | FILE WATCHING FUNCTION
|
---|
| 440 |
|
---|
| 441 | Qt supports a mechanism of notifying Qt applications about changes to the file
|
---|
| 442 | system, such as creating files or directories, changing their attributes or
|
---|
| 443 | deleting them, even if these changes are performed outside Qt applications. In
|
---|
| 444 | particular, this is used in standard Qt open file dialogs where you can
|
---|
| 445 | instantly observe changes made to the directory contents by third-party
|
---|
| 446 | applications running in the background.
|
---|
| 447 |
|
---|
| 448 | In order to support this functionality on OS/2, Qt relies on the file watching
|
---|
| 449 | mechanism provided by the Presentation Manager. This mechanism is a global
|
---|
| 450 | system resource so that only one process may use it at a time. In a standard
|
---|
| 451 | installation of OS/2 or eComStation this resource is exclusively used by the
|
---|
| 452 | Workplace Shell and is not available to other applications. In order to overcome
|
---|
| 453 | this limitation, a respective function was included to xWorkplace, the famous
|
---|
| 454 | WPS extension (which lives inside the WPS process), starting with version 1.0.8.
|
---|
| 455 | This function allows any number of other processes to receive notifications
|
---|
| 456 | about file system changes and it gets utilized by Qt as well.
|
---|
| 457 |
|
---|
| 458 | If an earlier version of xWorkplace is installed on the user system, or if no
|
---|
| 459 | xWorkplace extension is present at all, Qt uses its own method of detecting
|
---|
| 460 | file system changes which is based on polling the directory contents in regular
|
---|
| 461 | intervals. While this method works well for a small number of watched
|
---|
| 462 | directories with just few files in them, it may significantly slow down the
|
---|
| 463 | system if you work with a directory containing thousands of files.
|
---|
| 464 |
|
---|
| 465 | Therefore, is strongly recommended to install or upgrade to xWorkplace version
|
---|
| 466 | 1.0.8 or above to make sure that you will not suffer from the described problem.
|
---|
| 467 | You will also need to make sure that the "Enable folder auto-refresh" check box
|
---|
| 468 | located on the "Folder Views" page in the Workplace Shell settings notebook is
|
---|
| 469 | turned on in order to enable the notification mechanism (note that you may need
|
---|
| 470 | to reboot after changing its state).
|
---|
| 471 |
|
---|
| 472 |
|
---|
| 473 |
|
---|
[429] | 474 | ENVIRONMENT VARIABLES
|
---|
| 475 |
|
---|
| 476 | The Qt library recognizes a number of OS/2-specific environment variables that
|
---|
| 477 | affect its functionality at runtime. The table below lists these variables and
|
---|
| 478 | their meaning:
|
---|
| 479 |
|
---|
[740] | 480 | QT_PM_NO_DIVE If set, Qt will not use DIVE (direct interface video
|
---|
| 481 | extensions) for painting widgets even if DIVE (which
|
---|
| 482 | provides a much faster painting speed than the
|
---|
| 483 | regular GPI approach) is available. Currently, this
|
---|
| 484 | is the default setting if the Panorama video driver
|
---|
| 485 | is detected because its DIVE implementation contains
|
---|
| 486 | a number of bugs.
|
---|
| 487 |
|
---|
| 488 | QT_PM_DIVE=<mode> Enables using DIVE for painting widgets. <mode> is
|
---|
| 489 | one of:
|
---|
| 490 |
|
---|
| 491 | - FB (direct framebuffer access, which is the
|
---|
| 492 | fastest mode but causes the curruption of the
|
---|
| 493 | screen under the software mouse pointer due to
|
---|
| 494 | the limitation of DIVE). If this mode is not
|
---|
| 495 | available, BLIT will be used (see below).
|
---|
| 496 |
|
---|
| 497 | - FBSWM (the same FB but hides the mouse pointer
|
---|
| 498 | before painting which introduces mouse flicker
|
---|
| 499 | and may be a bit slower than the raw FB).
|
---|
| 500 |
|
---|
| 501 | - BLIT (slower than both FB and FBSWM but prevents
|
---|
| 502 | screen corruption under the mouse pointer and
|
---|
[807] | 503 | does not produce the mouse pointer flicker
|
---|
[740] | 504 | effect).
|
---|
| 505 |
|
---|
| 506 | This variable is ignored if QT_PM_NO_DIVE is set. If
|
---|
| 507 | neither this nor the QT_PM_NO_DIVE variable is set,
|
---|
| 508 | the FBSWM mode is used by default (unless the
|
---|
| 509 | current video driver is Panorama, see above).
|
---|
| 510 |
|
---|
[429] | 511 | QT_PM_NO_SOUND_SHARE If set, Qt will open the audio device in exclusive
|
---|
| 512 | only one sound may be played on the computer at a
|
---|
[950] | 513 | time. This mode is necessary for some sound cards
|
---|
[429] | 514 | when using the Uniaud audio driver as it is known to
|
---|
[950] | 515 | have problems with simultaneous playback.
|
---|
| 516 | Qt builds,
|
---|
[429] | 517 |
|
---|
| 518 | QT_PM_SOUND_SHARE The opposite to the above. If set, Qt will open the
|
---|
[950] | 519 | audio device in shared mode. This is the default
|
---|
| 520 | behavior if neither this nor the
|
---|
| 521 | QT_PM_NO_SOUND_SHARE variable is set. This variable
|
---|
| 522 | is ignored if QT_PM_NO_SOUND_SHARE is set.
|
---|
[429] | 523 |
|
---|
| 524 | QT_PM_NO_REGISTRY If set, Qt will not use the Open32 registry to store
|
---|
| 525 | application settings with QSettings. Instead, plain
|
---|
| 526 | text INI files will be used for both NativeFormat
|
---|
| 527 | and IniFormat. Due to a number of problems in the
|
---|
| 528 | Open32 registry implementation (that may easily lead
|
---|
| 529 | to registry corruption), this is the default
|
---|
| 530 | behavior if neither this nor the QT_PM_REGISTRY
|
---|
| 531 | variable is set.
|
---|
| 532 |
|
---|
| 533 | QT_PM_REGISTRY The opposite to the above. If set, Qt will use the
|
---|
[624] | 534 | Open32 registry to store application settings. This
|
---|
| 535 | variable is ignored if QT_PM_NO_REGISTRY is set.
|
---|
[429] | 536 |
|
---|
[624] | 537 | QT_PM_NO_SYSTEM_LOCALE If set, Qt will ignore the regional settings from
|
---|
| 538 | the system locale object found in the Country
|
---|
| 539 | Palette located in the System Setup folder and will
|
---|
| 540 | take them from the internal Qt locale database
|
---|
| 541 | according to the current country and language
|
---|
| 542 | settings. Due to the fact that this internal Qt
|
---|
| 543 | database usually has a better representation of the
|
---|
| 544 | regional settings, this is the default behavior if
|
---|
| 545 | neither this nor the QT_PM_SYSTEM_LOCALE variable is
|
---|
| 546 | set.
|
---|
[429] | 547 |
|
---|
[624] | 548 | QT_PM_SYSTEM_LOCALE The opposite to the above. If set, Qt will use the
|
---|
| 549 | regional settings as found in the default locale
|
---|
| 550 | object set the Country Palette. This variable is
|
---|
| 551 | ignored if QT_PM_NO_SYSTEM_LOCALE is set.
|
---|
[429] | 552 |
|
---|
[624] | 553 | LANG This variable can be used to override the default
|
---|
| 554 | country and language used in the Qt application both
|
---|
| 555 | for regional settings and for translations. The
|
---|
| 556 | format of the value is "ll_CC" where <ll> is the
|
---|
| 557 | two-letter ISO language code and <CC> is the two-
|
---|
| 558 | letter ISO country code. Note that if this variable
|
---|
| 559 | is not set, Qt will derive the language and country
|
---|
| 560 | from the system country code specified in the
|
---|
| 561 | COUNTRY statement of CONFIG.SYS.
|
---|
| 562 |
|
---|
| 563 |
|
---|
| 564 |
|
---|
[740] | 565 | COMMAND LINE OPTIONS
|
---|
[576] | 566 |
|
---|
[740] | 567 | Any Qt executable recognizes a number of command line options that may change
|
---|
| 568 | the behavior of the Qt application. Here are the most interesting ones:
|
---|
[576] | 569 |
|
---|
[740] | 570 | -style <name> Changes the default Qt widget style (theme) to a
|
---|
| 571 | style with the given name. The buiil-in styles which
|
---|
| 572 | are always available in the official build include:
|
---|
| 573 | "windows" (currently, the default on OS/2), "motif",
|
---|
| 574 | "cde", "plastique" and "cleanlooks". Other styles
|
---|
| 575 | may be also provided by the style plugins.
|
---|
[576] | 576 |
|
---|
[740] | 577 | -graphicssystem <name> Changes the graphics system used to paint widgets.
|
---|
| 578 | On OS/2, only two values are supported: "native"
|
---|
| 579 | (the default one) and "raster". The "native" system
|
---|
| 580 | uses DIVE (direct interface video extensions) when
|
---|
| 581 | it is available. If DIVE is not available or if it
|
---|
| 582 | is disabled (see the QT_PM_NO_DIVE environment
|
---|
| 583 | variable description for details), the "raster"
|
---|
| 584 | system will be automatically selected as a fallback.
|
---|
[576] | 585 |
|
---|
| 586 |
|
---|
[740] | 587 |
|
---|
[144] | 588 | CURRENT LIMITATIONS
|
---|
| 589 |
|
---|
[1034] | 590 | 1. configure.cmd does not understand all command line options understood by
|
---|
[830] | 591 | configure scripts on other platforms. If you want to customize your build
|
---|
| 592 | of the Qt library (which is normally not recommended and not supported),
|
---|
| 593 | you may try to modify configure.cmd itself.
|
---|
[524] | 594 |
|
---|
[1034] | 595 | 2. OS/2 bitmap fonts are not supported. Use TTF or Type1 (PFB) fonts with Qt.
|
---|
[144] | 596 |
|
---|
[1034] | 597 | 3. No support for widget masks and trapsparency in top-level widgets and in
|
---|
| 598 | child widgets with native window IDs (Presentation Manager limitation).
|
---|
| 599 |
|
---|
[740] | 600 | 4. No native PM style, but Qt will use fonts and colors from the current
|
---|
[320] | 601 | OS/2 theme. Hint: if your default OS/2 font is "WarpSans", install the
|
---|
| 602 | "Workplace Sans" TTF font from Alex Taylor to get more native look & feel.
|
---|
[740] | 603 | It is recommended to install version 0.7 of the Normal face and version 0.3
|
---|
[320] | 604 | of the Bold face which you can find here:
|
---|
[144] | 605 |
|
---|
[320] | 606 | http://users.socis.ca/~ataylo00/creative/fonts/workplace/
|
---|
[287] | 607 |
|
---|
[740] | 608 | 5. QProcess: when starting PM applications from text-mode applications, the
|
---|
[524] | 609 | returned PID is a PID of the intermediate cmd.exe process, not the target
|
---|
| 610 | application.
|
---|
[145] | 611 |
|
---|
[740] | 612 | 6. The following classes are not available due to their rare usage or low
|
---|
[524] | 613 | importance on the OS/2 platform: QSharedMemory, QSystemSemaphore,
|
---|
[740] | 614 | QInputContext. On the source level, a number of macros is defined to
|
---|
| 615 | reflect this, respectively: QT_NO_SYSTEMSEMAPHORE, QT_NO_SHAREDMEMORY,
|
---|
| 616 | QT_NO_IM. Normally, Qt applications use these macros in the form of
|
---|
| 617 | "#fndef QT_NO_SOMEFEATURE" to isolate the relevant parts of the code that
|
---|
| 618 | uses these classes so that the application still builds when the
|
---|
| 619 | corresponding feature is missing.
|
---|
[243] | 620 |
|
---|
[740] | 621 | 7. No qt3support module. This functionality is rarely necessary in mature
|
---|
| 622 | real life Qt applications and has low priority. In the code, it is
|
---|
| 623 | reflected by the absense of the QT3_SUPPORT macro.
|
---|
[145] | 624 |
|
---|
[740] | 625 | 8. The following features are missing (either because of the lack of the
|
---|
| 626 | required support from the system side or because of the rare usage):
|
---|
| 627 |
|
---|
| 628 | - IPV6 support in the network module (QT_NO_IPV6 is defined).
|
---|
| 629 | - phonon module (QT_NO_PHONON is defined).
|
---|
| 630 | - multimedia module (QT_NO_MULTIMEDIA is defined).
|
---|
| 631 | - OpenGL module (QT_NO_OPENGL is defined).
|
---|
| 632 | - tablet support (QT_NO_TABLET is defined).
|
---|
| 633 |
|
---|
[524] | 634 | See the project roadmap for more information on the current progress and
|
---|
| 635 | future plans:
|
---|
[144] | 636 |
|
---|
[524] | 637 | http://svn.netlabs.org/qt4/roadmap
|
---|
[144] | 638 |
|
---|
[524] | 639 | Feel free to request new features and report bugs using the project bug
|
---|
| 640 | tracker abaialble at:
|
---|
[188] | 641 |
|
---|
[524] | 642 | http://svn.netlabs.org/qt4/report
|
---|
| 643 |
|
---|
| 644 |
|
---|
| 645 |
|
---|
[144] | 646 | CREDITS
|
---|
| 647 |
|
---|
[1040] | 648 | Dmitriy Kuminov (development)
|
---|
[144] | 649 | Silvan Scherrer (management)
|
---|
| 650 |
|
---|
| 651 | netlabs.org (hosting & support)
|
---|
| 652 |
|
---|
| 653 | Nokia Corporation (original Qt library)
|
---|
| 654 |
|
---|
| 655 | We also want to THANK all individuals and organizations who made the donations
|
---|
| 656 | to this project and helped to make it happen. Please visit
|
---|
| 657 |
|
---|
| 658 | http://qt.netlabs.org/en/site/index.xml
|
---|
| 659 |
|
---|
| 660 | to get the full list of sponsors and to find information on how you can support
|
---|
| 661 | the project.
|
---|
| 662 |
|
---|
| 663 |
|
---|
| 664 | Qt is a trademark of Nokia Corporation and/or its subsidiary(-ies).
|
---|
| 665 | OS/2 and OS/2 Warp are trademarks of the IBM Corporation and/or its subsidiary(-ies).
|
---|
| 666 | eComStation is a trademark of Serenity Systems International and/or its subsidiary(-ies).
|
---|
| 667 | Etc.
|
---|