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Mac Forum / Programming / Mac Programming / September 2004compiling sdl (fink) + opengl (including glut)
i am trying to compile an application that i onced wrote for linux. it uses sdl and opengl (including glut). i installed sdl libraries and headers using fink. also added '-objc' option to g++ (it helped with one problem). however during consolidation i got following error (i provide all make output): g++ -c space.cc -I/sw/include/SDL/ -I/usr/X11R6/include/ g++ -c draw.cc -I/sw/include/SDL/ -I/usr/X11R6/include/ g++ -c spacedraw.cc -I/sw/include/SDL/ -I/usr/X11R6/include/ g++ -c gravspace.cc -I/sw/include/SDL/ -I/usr/X11R6/include/ g++ main.cc -o grav space.o gravspace.o spacedraw.o draw.o -L/usr/X11R6/lib/ -L/sw/lib/ -lGL -lGLU -lm -lSDL -lpthread -lobjc -I/sw/include/SDL/ -I/usr/X11R6/include/ ld: draw.o illegal reference to symbol: _XCloseDisplay defined in indirectly referenced dynamic library /usr/X11R6/lib/libX11.6.dylib make: *** [grav] Error 1 tia  SignatureMichal Adamczak pokryfka@druid.if.uj.edu.pl > i am trying to compile an application that i onced wrote for linux. > it uses sdl and opengl (including glut). [quoted text clipped - 13 lines] > indirectly referenced dynamic library /usr/X11R6/lib/libX11.6.dylib > make: *** [grav] Error 1 Add -lX11 to your link line. Hope this helps, Eric SignatureEric Albert ejalbert@cs.stanford.edu http://outofcheese.org/ >> g++ main.cc -o grav space.o gravspace.o spacedraw.o draw.o >> -L/usr/X11R6/lib/ -L/sw/lib/ -lGL -lGLU -lm -lSDL -lpthread -lobjc [quoted text clipped - 7 lines] > Hope this helps, > Eric thanks, i guess it helped but still there's something wrong :( is there anything else should take care of? g++ main.cc -o grav space.o gravspace.o spacedraw.o draw.o -L/usr/X11R6/lib/ -L/sw/lib/ -lGL -lGLU -lm -lSDL -lpthread -lobjc -lX11 -I/sw/include/SDL/ -I/usr/X11R6/include/ ld: Undefined symbols: _main make: *** [grav] Error 1 SignatureMichal Adamczak pokryfka@druid.if.uj.edu.pl > >> g++ main.cc -o grav space.o gravspace.o spacedraw.o draw.o > >> -L/usr/X11R6/lib/ -L/sw/lib/ -lGL -lGLU -lm -lSDL -lpthread -lobjc [quoted text clipped - 17 lines] > _main > make: *** [grav] Error 1 I'd guess that main is having its name mangled as a C++ function. Try changing this: int main(...) to this: extern "C" int main(...) Hope this helps, Eric SignatureEric Albert ejalbert@cs.stanford.edu http://outofcheese.org/ hanks, i guess it helped but still there's something wrong :( >>is there anything else should take care of? >> [quoted text clipped - 4 lines] >>_main >>make: *** [grav] Error 1 Add to the link line: -lSDLmain And be sure to include "SDL.h" in main.cc. Anyway IMHO you should use the SDL framework available from libSDL.org, you can use it also from the command line adding to your link line: -F~/Library/Frameworks/ -framework SDL The problem with fink SDL is that it may require X11 and it needs the libraries placed in the same place they are in your system, the problem with selfbuilt SDL is that it doesn't work with OSX version below the one of your system and you will need to place the libraries with an installer in the same location where they are located in your system. Bye, Gabry > Add to the link line: > -lSDLmain > > And be sure to include "SDL.h" in main.cc. unfortunatelly this didnt help i shall look up the code and fix it a bit so it compiles with aqua however i'd like to be able to compile it on linux as well and i'm worried that i'll have to use preprocesor in order to do that and write some code separately for each of them SignatureMichal Adamczak pokryfka@druid.if.uj.edu.pl > i shall look up the code and fix it a bit so it compiles with aqua > however i'd like to be able to compile it on linux as well > and i'm worried that i'll have to use preprocesor in order to do that > and write some code separately for each of them You don't need to do that. Just compile yourself SDL or link against the SDL framework you find on libsdl.org, I'm quite sure the problem is in your makefile or in your SDL version. I've ported a commercial game to Mac and Linux from w32 and the only... #ifdef __APPLE__ ...i've to add to the sources is to force CTRL+left button to do the same of right button (I've to do it since the game need a two button mouse :) ) Other than that I've two different makefiles, the osx one build the .app structure and links with the correct libraries, no differences in sources (370.000 lines). Bye, Gabry PS: The demo version will be out the next week >> g++ main.cc -o grav space.o gravspace.o spacedraw.o draw.o >> -L/usr/X11R6/lib/ -L/sw/lib/ -lGL -lGLU -lm -lSDL -lpthread -lobjc -lX11 [quoted text clipped - 8 lines] > to this: > extern "C" int main(...) nope :( the error message is still the same SignatureMichal Adamczak pokryfka@druid.if.uj.edu.pl Hi Michal, > g++ main.cc -o grav space.o gravspace.o spacedraw.o draw.o > -L/usr/X11R6/lib/ -L/sw/lib/ -lGL -lGLU -lm -lSDL -lpthread -lobjc > -I/sw/include/SDL/ -I/usr/X11R6/include/ > ld: draw.o illegal reference to symbol: _XCloseDisplay defined in > indirectly referenced dynamic library /usr/X11R6/lib/libX11.6.dylib > make: *** [grav] Error 1 I once talked with the SDL developers about X11 vs. Aqua. They were pretty steadfast that they didn't want to support an X11-version of SDL on Mac OS X, only the Aqua version. So this reference to XCloseDisplay() probably comes from the application code which is still trying to call X11 but should be ported to Aqua, before this works with SDL. You also want to remove -I/usr/X11R6/include/ and fix everything that this breaks to make sure no X11-specific code remains in the app. benny |
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