unable to compile in GTK

abadfish · 08-05-2007, 11:47 AM

I'm new to linux so please bear with me...

I successfully installed GTK 2.10.14 on Ubuntu 7.04. I'm now going through the tutorial on GTK.org. I'm trying to do the first program called base.c. here is the 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);
gtk_widget_show (window);

gtk_main ();

return 0;
}

I try to compile the program with the following (as per the tutorial):

Quote:

% gcc base.c -o base 'pkg-config --cflags --libs gtk+-2.0'

I get the following error messages:

Quote:

gcc: pkg-config --cflags --libs gtk+-2.0: No such file or directory
base.c:1:21: error: gtk/gtk.h: No such file or directory
base.c: In function ‘main’:
base.c:6: error: ‘GtkWidget’ undeclared (first use in this function)
base.c:6: error: (Each undeclared identifier is reported only once
base.c:6: error: for each function it appears in.)
base.c:6: error: ‘window’ undeclared (first use in this function)
base.c:10: error: ‘GTK_WINDOW_TOPLEVEL’ undeclared (first use in this function)

I'm assuming the problem is in the first line where its looking for pkgconfig. I have pkgconfig stuff in two directories, /usr/local/lib/pkgconfig and /usr/lib/pkgconfig. The pkgconfig in /usr/local/lib contains a folder called gtk+-2.0.

So I've added the following to my env:

Quote:

% export PKG_CONFIG_PATH=/usr/local/lib

I've also tried all of the following:

Quote:

% export PKG_CONFIG_PATH=/usr/local/lib

% export PKG_CONFIG_PATH=/usr/local/lib:/usr/lib

% export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig

% export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:/usr/lib/pkgconfig

None of those have allowed me to compile.

Can anybody shed some light on what I'm doing wrong?????

Thanks in advance.

Nylex · 08-05-2007, 11:52 AM

When you compile, you need to use backticks (`) around the pkg-config part, rather than normal single quotes ('):

gcc base.c -o base `pkg-config --cflags --libs gtk+-2.0`

weibullguy · 08-05-2007, 11:52 AM

You have to install the development package for Gtk on distros like Ubuntu. They are the ones that are suffixed with -dev or -devel.

abadfish · 08-05-2007, 12:07 PM

Quote:

Originally Posted by Nylex

When you compile, you need to use backticks (`) around the pkg-config part, rather than normal single quotes ('):

gcc base.c -o base `pkg-config --cflags --libs gtk+-2.0`

Thank you, that did the trick!!! I'm such a

Quote:

Originally Posted by weibullguy

You have to install the development package for Gtk on distros like Ubuntu. They are the ones that are suffixed with -dev or -devel.

I saw those. However, when I selected those for install, it wanted to install a bunch of other packages (e.g. cairo, pango, atk, etc) which 1) I have already installed and 2) were older version than the ones I installed. So I chose not to go that route.

thanks for your replies!