| adding gtk-library, c++ [message #994201] |
Wed, 26 December 2012 17:51  |
 jackomo jack
Messages: 3
Registered: December 2012 |
Junior Member |
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moved from newcomers forum:
Dear Alle,
I worked on Eclipse using C. Now I want to write a little Programm for my Ubuntu Environment using C++ and GTK.
I tried a bunch of tutorial, I know, adding the gtk-libraries is not easy in eclipse, but i like the debugging environment 
my basic c++ code:
Quote:#include <gtk/gtk.h>
int main(int argc, char *argv[])
{
GtkWidget *window;
gtk_init(&argc, &argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
// g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
gtk_widget_show_all(window);
gtk_main();
return 0;
}
When I compile on the terminal using this, everything works out fine (so gtk is properly installed
Quote:
g++ gtkstart main.cpp $(pkg-config gtk+-2.0 --cflags --libs)
here is where the Problem starts...
First I added in Ecplipse gtk libraries to: projekt(right-click) -- properties -- C/C++ general -- paths and symbols -- GNU C++ and added:
/usr/include/gtk-2.0
...gtk-3.0
...gtk-3.0/gtk
/usr/lib/glib-2.0/include
...
a bunch more that came to my mind --> Result: #include <gtk/gtk.h> still unknown...
#edit: klick on apply on the richt bottom corner--> library new set up so gtk/gtk.h is known!
Now I added to the compiler and Linker the libraries, that the pkg-config function gives out when I compile the cpp-file on the terminal.
pkg-config output:
Quote:
-pthread -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo -lpango-1.0 -lfreetype -lfontconfig -lgobject-2.0 -lglib-2.0
just bunch of libraries
Added this under properties - c/c++ - settings - then the linker and the c++ compiler - expert mode: comand line --- and added it here at the end so that the comand line looks similar to the one that works on the terminal.
Quote:Building file: ../src/test3.cpp
Invoking: GCC C++ Compiler
g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/test3.d" -MT"src/test3.d" -o "src/test3.o" "../src/test3.cpp" -pthread -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo -lpango-1.0 -lfreetype -lfontconfig -lgobject-2.0 -lglib-2.0
Finished building: ../src/test3.cpp
Building target: libtest3
Invoking: GCC C++ Linker
g++ -shared -o "libtest3" ./src/main.o ./src/test3.o -pthread -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo -lpango-1.0 -lfreetype -lfontconfig -lgobject-2.0 -lglib-2.0
/usr/bin/ld: ./src/test3.o: relocation R_X86_64_PC32 against undefined symbol `gtk_init' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: Bad value
the Linker has a Problem with gtk_init which should be a very basic gtk function, so actually no problem..
I added the /usr/lib/x86_64-linux-gnu/libglib-2.0.so (divided in path and library) to the linker libraries but gtk/gtk.h is still unknown.
By accident I managed that gtk/gtk.h was not a problem anymore, but I dont find it again. I think just trying is not the way anymore. Here I need your help.
What is the difference of adding libraries to this 1000 places? where to add what? I basically just want to link the gtk library.
What is the difference between compiling in eclplse and in the terminal? Works here but not on the other one?
you see, I'm in the middle of nowhere.
Using Ubuntu 12.04, Eclipse 3.7.2, C/C++ Development Tools SDK 8.0.2.201202111925 org.eclipse.cdt.sdk.feature.group Eclipse CDT
but strangly und Help is no link to the marketplace.
...findbestopensource.com/product/pkg-config-support-for-eclipse-cdt
should be helpful...
#little edit, gtk/gtk.h now known !
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