wxWidgets 2.5 for GTK+ installation ----------------------------------- IMPORTANT NOTE: If you experience problems installing, please re-read these instructions and other related files (todo.txt, bugs.txt and osname.txt for your platform if it exists) carefully before mailing wxwin-users or the author. Preferably, try to fix the problem first and then send a patch to the author. When sending bug reports tell us what version of wxWidgets you are using (including the beta) and what compiler on what system. One example: wxGTK 2.6.0, gcc 2.95.4, Redhat 6.2 * The simplest case ------------------- If you compile wxWidgets on Linux for the first time and don't like to read install instructions just do (in the base dir): > mkdir buildgtk > cd buildgtk > ../configure --with-gtk > make > su > make install > ldconfig > exit Afterwards you can continue with: > make > su > make install > ldconfig > exit (If you don't do the 'make install' part, you can still use the libraries from the buildgtk directory, but they will not be available to other users.) If you want to remove wxWidgets on Unix you can do this: > su > make uninstall > ldconfig > exit Note that by default, GTK+ 2 is used. GTK+ 1 can be specified with --disable-gtk2. * The Unicode case ------------------ wxGTK has support for the new version 2.0.X of GTK+ since version 2.4.0. This means that wxGTK apps can now make use Unicode as the underlying encoding for all text operations. This is a very fundamental change and will need time to stabilize, so be careful. After installing a recent version of GTK+ 2.0, do this > mkdir buildgtk > cd buildgtk > ../configure --with-gtk --enable-gtk2 --enable-unicode > make > su > make install > ldconfig > exit If you are adventurous, you can install the FcConfig 2.0 package and the Pango library from CVS (or a very recent snapshot from the upcoming 1.2 series) and set do "export GDK_USE_XFT=1" so that the display as well as the printing code will use render using the same FreeType code even for Far Eastern encodings. Expect problems. * The expert case ----------------- If you want to do some more serious cross-platform programming with wxWidgets, such as for GTK+ and Motif, you can now build two complete libraries and use them concurrently. To do this, create a separate directory for each build of wxWidgets - you may also want to create different versions of wxWidgets and test them concurrently. Most typically, this would be a version configured with --enable-debug and one without. Note, that only one build can currently be installed with 'make install', so you'd have to use local version of the library for that purpose. For building three versions (one GTK+, one Motif and a debug version of the GTK source) you'd do this: md buildmotif cd buildmotif ../configure --with-motif make cd .. md buildgtk cd buildgtk ../configure --with-gtk make cd .. md buildgtkd cd buildgtkd ../configure --with-gtk --enable-debug make cd .. * The simplest errors --------------------- For any configure errors: please look at config.log file which was generated during configure run, it usually contains some useful information. configure reports, that you don't have GTK+ 1.2 installed although you are very sure you have. Well, you have installed it, but you also have another version of the GTK+ installed, which you may need to remove including other versions of glib (and its headers). Or maybe you installed it in non default location and configure can't find it there, so please check that your PATH variable includes the path to the correct gtk-config. Also check that your LD_LIBRARY_PATH or equivalent variable contains the path to GTK+ libraries if they were installed in a non default location. You get errors from make: please use GNU make instead of the native make program. Currently wxWidgets can be built only with GNU make, BSD make and Solaris make. Other versions might work or not (any which don't have VPATH support definitely won't). You get errors during compilation: The reason is that you probably have a broken compiler. GCC 2.8 and earlier versions and egcs are likely to cause problems due to incomplete support for C++ and optimisation bugs. Best to use GCC 2.95 or later. You get immediate segfault when starting any sample or application: This is either due to having compiled the library with different flags or options than your program - typically you might have the __WXDEBUG__ option set for the library but not for your program - or due to using a compiler with optimisation bugs. Linker complains about missing PROIO_yy_flex_alloc and similar symbols: you probably have an old version of flex, 2.5.4 is recommended. * The simplest program ---------------------- Now create your super-application myfoo.cpp and compile anywhere with g++ myfoo.cpp `wx-config --libs --cxxflags` -o myfoo * General --------- The Unix variants of wxWidgets use GNU configure. If you have problems with your make use GNU make instead. If you have general problems with installation, read my homepage at http://wesley.informatik.uni-freiburg.de/~wxxt/ for newest information. If you still don't have any success, please send a bug report to one of our mailing lists (see my homepage) INCLUDING A DESCRIPTION OF YOUR SYSTEM AND YOUR PROBLEM, SUCH AS YOUR VERSION OF GTK, WXGTK, WHAT DISTRIBUTION YOU USE AND WHAT ERROR WAS REPORTED. I know this has no effect, but I tried... * GUI libraries --------------- wxWidgets/GTK+ requires the GTK+ library to be installed on your system. It has to be a stable version, preferably version 1.2.10 (at least 1.2.3 is required, 1.2.7 is strongly recommended). You can get the newest version of the GTK+ from the GTK+ homepage at: http://www.gtk.org We also mirror GTK+ at my ftp site. You'll find information about downloading at my homepage. * Additional libraries ---------------------- wxWidgets/Gtk requires a thread library and X libraries known to work with threads. This is the case on all commercial Unix-Variants and all Linux-Versions that are based on glibc 2 except RedHat 5.0 which is broken in many aspects. As of writing this, virtually all Linux distributions have correct glibc 2 support. You can disable thread support by running ./configure --disable-threads make su make install ldconfig exit * Building wxGTK on OS/2 ------------------------ Please send comments and question about the OS/2 installation to Stefan Neis and patches to the wxWidgets mailing list. In the following list, the version numbers indicate the configuration that was actually used by myself, newer version should cause no problems and even older ones are expected to work most of the time. You'll need OS/2 Warp (4.51) or eCS(1.0), X-Free86/2 (3.3.6 or newer), GTK+ (1.2.5 or newer), emx (0.9d fix 4), flex (2.5.4), yacc (1.8) or bison (1.25), a Unix like shell (pdksh-5.2.14 or ash), Autoconf (2.57), GNU file utilities (3.13), GNU text utilities (1.19), GNU shell utilites (1.12), m4 (1.4), sed (2.05), grep (2.0), Awk (3.0.3), GNU Make (3.75). Preferably, you should have Posix/2 installed and C(PLUS)_INCLUDE_PATH and LIBRARY_PATH set up accordingly, however, wxGTK will even work without it. Presence of Posix/2 will be auto-detected. Open an OS/2 prompt and switch to the directory above. Set MAKESHELL (and depending on your installation also INSTALL, for me it tends to try to use the system's tcpip\pcomos\install.exe which causes problems...) to a Unix like shell, e.g. SET MAKESHELL=ash Be warned that depending on the precise version of your make, the variable that needs to be set might be MAKE_SHELL instead of MAKESHELL. If you have a really deficient version of GNU make, it might even be necessary to set SHELL or even COMSPEC to a unix like shell as well. Notice that the delivered configure scripts are fully OS/2 aware, so you can simply run ash -c "configure --with-gtk" and make and possibly make install as described above. * Building wxGTK on SGI ----------------------- Using the SGI native compilers, it is recommended that you also set CFLAGS and CXXFLAGS before running configure. These should be set to : CFLAGS="-mips3 -n32" CXXFLAGS="-mips3 -n32" This is essential if you want to use the resultant binaries on any other machine than the one it was compiled on. If you have a 64bit machine (Octane) you should also do this to ensure you don't accidently build the libraries as 64bit (which is untested). The SGI native compiler support has only been tested on Irix 6.5. * Create your configuration --------------------------- Usage: ./configure options If you want to use system's C and C++ compiler, set environment variables CC and CCC as % setenv CC cc % setenv CXX CC % ./configure [options] to see all the options please use: ./configure --help It is recommended to build wxWidgets in another directory (maybe a subdirectory of your wxWidgets installation) as this allows you to have multiple configurations (for example, debug and release or GTK and Motif) simultaneously. * General options ----------------- Given below are the commands to change the default behaviour, i.e. if it says "--disable-threads" it means that threads are enabled by default. Normally, you won't have to choose a toolkit, because when you download wxGTK, it will default to --with-gtk etc. But if you use all of our CVS repository you have to choose a toolkit. You must do this by running configure with either of: --with-gtk Use the GIMP ToolKit (GTK+). Default. --with-motif Use either Motif or Lesstif Configure will look for both. The following options handle the kind of library you want to build. --disable-threads Compile without thread support. --disable-shared Do not create shared libraries, but build static libraries instead. --enable-monolithic Build wxWidgets as single library instead of as several smaller libraries (which is the default since wxWidgets 2.5.0). --disable-optimise Do not optimise the code. Can sometimes be useful for debugging and is required on some architectures such as Sun with gcc 2.8.X which would otherwise produce segvs. --enable-unicode Enable Unicode support. --enable-gtk2 Compiling using GTK+ 2 (the default). --enable-profile Add profiling info to the object files. Currently broken, I think. --enable-no_rtti Enable compilation without creation of C++ RTTI information in object files. This will speed-up compilation and reduce binary size. --enable-no_exceptions Enable compilation without creation of C++ exception information in object files. This will speed-up compilation and reduce binary size. Also fewer crashes during the actual compilation... --enable-no_deps Enable compilation without creation of dependency information. --enable-permissive Enable compilation without checking for strict ANSI conformance. Useful to prevent the build dying with errors as soon as you compile with Solaris' ANSI-defying headers. --enable-mem_tracing Add built-in memory tracing. --enable-dmalloc Use the dmalloc memory debugger. Read more at www.letters.com/dmalloc/ --enable-debug_info Add debug info to object files and executables for use with debuggers such as gdb (or its many frontends). --enable-debug_flag Define __DEBUG__ and __WXDEBUG__ when compiling. This enable wxWidgets' very useful internal debugging tricks (such as automatically reporting illegal calls) to work. Note that program and library must be compiled with the same debug options. --enable-debug Same as --enable-debug_info and --enable-debug_flag together. Unless you have some very specific needs, you should use this option instead of --enable-debug_info/flag ones separately. * Feature Options ----------------- When producing an executable that is linked statically with wxGTK you'll be surprised at its immense size. This can sometimes be drastically reduced by removing features from wxWidgets that are not used in your program. The most relevant such features are --with-odbc Enables ODBC code. This is disabled by default because iODBC is under the L-GPL license which is less liberal than wxWidgets license. --without-libpng Disables PNG image format code. --without-libjpeg Disables JPEG image format code. --without-libtiff Disables TIFF image format code. --without-expat Disable XML classes based on Expat parser. --disable-pnm Disables PNM image format code. --disable-gif Disables GIF image format code. --disable-pcx Disables PCX image format code. --disable-iff Disables IFF image format code. --disable-resources Disables the use of *.wxr type resources. --disable-threads Disables threads. Will also disable sockets. --disable-sockets Disables sockets. --disable-dnd Disables Drag'n'Drop. --disable-clipboard Disables Clipboard. --disable-serial Disables object instance serialisation. --disable-streams Disables the wxStream classes. --disable-file Disables the wxFile class. --disable-textfile Disables the wxTextFile class. --disable-intl Disables the internationalisation. --disable-validators Disables validators. --disable-accel Disables accelerators support. Apart from disabling certain features you can very often "strip" the program of its debugging information resulting in a significant reduction in size. Please see the output of "./configure --help" for comprehensive list of all configurable options. * Compiling ----------- The following must be done in the base directory (e.g. ~/wxGTK or ~/wxWin or whatever) Now the makefiles are created (by configure) and you can compile the library by typing: make make yourself some coffee, as it will take some time. On an old 386SX possibly two weeks. During compilation, you'll get a few warning messages depending in your compiler. If you want to be more selective, you can change into a specific directory and type "make" there. Then you may install the library and its header files under /usr/local/include/wx and /usr/local/lib respectively. You have to log in as root (i.e. run "su" and enter the root password) and type make install You can remove any traces of wxWidgets by typing make uninstall If you want to save disk space by removing unnecessary object-files: make clean in the various directories will do the work for you. * Creating a new Project -------------------------- 1) The first way uses the installed libraries and header files automatically using wx-config g++ myfoo.cpp `wx-config --cxxflags --libs` -o myfoo Using this way, a make file for the minimal sample would look like this CC = gcc minimal: minimal.o $(CC) -o minimal minimal.o `wx-config --libs` minimal.o: minimal.cpp mondrian.xpm $(CC) `wx-config --cxxflags` -c minimal.cpp -o minimal.o clean: rm -f *.o minimal This is certain to become the standard way unless we decide to stick to tmake. If your application uses only some of wxWidgets libraries, you can specify required libraries when running wx-config. For example, `wx-config --libs=html,core` will only output link command to link with libraries required by core GUI classes and wxHTML classes. See the manual for more information on the libraries. 2) The other way creates a project within the source code directories of wxWidgets. For this endeavour, you'll need GNU autoconf version 2.14 and add an entry to your Makefile.in to the bottom of the configure.in script and run autoconf and configure before you can type make. ---------------------- In the hope that it will be useful, Robert Roebling