gtk hello world: "gtk.h: No such file"

[schmolch]

Im trying to compile a simple gtk hello world program but get this error msg:

No package 'gtk+2.0' found
helloworld.c:1:21: error: gtk/gtk.h: No such file or directory

I have libgtk2-0.dev installed and gtk.h is at /usr/include/gtk-2.0/gtk/gtk.h

I tried to compile it with geany and on the command-line with

gcc -Wall -g helloworld.c -o helloworld pkg-config --cflags gtk+-2.0` `pkg-config --libs gtk+-2.0` as instructed in the book.

Can somebody please tell me why in the "§%!"§$ it does not work?

[dwhitney67]

Three possibilities...

1. You are a bad typist;
2. Your book is wrong (ie has a typo);
3. You do not have GTK+-2.0 installed on your system.

From the statement you posted, I am wagering #1 is the culprit. This part of your gcc statement is missing the backtick (`) character:


pkg-config --cflags gtk+-2.0`

[Physical Hook]

The first thing to check is whether you've installed libgtk2.0-dev. If everything seems to be in place, use the following command.


gcc -Wall -g helloworld.c -o helloworld `pkg-config --cflags gtk+-2.0 --libs gtk+-2.0`

Source: http://library.gnome.org/devel/gtk-tutorial/stable/x111.html

[schmolch]

Thanks for putting up with my stupidity.
Those backticks are a bitch though.

[I am >= Wes]

Did anyone get some sort of workaround for Geany working? I love it, not that I'm uncomfortable with the command line (I use Archlinux generally, but haven't had the patience to install it on my netbook), I would just prefer to not have to think about it and just click a button.

[schmolch]

You just have to add
`pkg-config --cflags gtk+-2.0` `pkg-config --libs gtk+-2.0`
to Geany's compile and build commands.
They are not in the preferences (which is why i could not find them first) but in the build-menu.

[I am >= Wes]

You just have to add
to Geany's compile and build commands.
They are not in the preferences (which is why i could not find them first) but in the build-menu.

Duly noted sir. I shall fix it now and report any problems (though I doubt there'll be any).

[pirog]

hm, I use Makefile in Geany - try it.

i also used gedit+terminal, then moved onto Geany and then onto NetBeans.
Gedit+terminal: worked like a charm
Geany: didn't bother with compiler options - used Makefile instead
NetBeans:

main.c:3:17: warning: gtk.h: No such file or directory
ah, i'm going back to simpler tools. Gedit/Geany rock!:guitar:
nano??? hahaha!

[LKjell]

When you get use to vim everything else seems so inconvenient.

[pirog]

When you get use to vim everything else seems so inconvenient.

You know, LKjell, I have never used vim, just nano. I am not so sure as to why I've never used it, but there you go :)

cheerio

[LKjell]

You know, LKjell, I have never used vim, just nano. I am not so sure as to why I've never used it, but there you go :)

cheerio

vimtutor is a very nice introduction.

[pirog]

vimtutor is a very nice introduction.

LKjell, I haven't even got vim installed. I'll give it a try after the Super Bowl ;) thanks

[LKjell]

vim.tiny is installed otherwise you have uninstalled it in karmic

[pirog]

vim.tiny is installed otherwise you have uninstalled it in karmic

hah, you are right. i don't think vimtutor installed (vim runtime?). I used emacs for a while, but i could never get used to it. i did a lot of Latex work and emacs wasn't what i looked for.

I was recently browsing forums for best editor for programmers/writers/students and came to the conclusion that there is the best editor... and it is different for everyone. sounds lame, but it is true.

[pbrane]

An easier way to compile a GTK+ app on the command line is

gcc $(pkg-config --cflags --libs gtk+-2.0) -o appname app.c

I prefer to use a text editor ( emacs or gedit ) and terminal.

[pirog]

An easier way to compile a GTK+ app on the command line is

gcc $(pkg-config --cflags --libs gtk+-2.0) -o appname app.c

i'don't know... what's wrong with?:

make
quite short and you just add files as:

FILES = src0.o src1.o src3.o ...
if at all necessary :)
personal choice i guess. thanks for the input pbrane ;)

[pbrane]

i'don't know... what's wrong with?:

make
quite short and you just add files as:

FILES = src0.o src1.o src3.o ...
if at all necessary :)
personal choice i guess. thanks for the input pbrane ;)

I agree with you. I personally use autoconf tools to create projects. But I was responding to the OP. The backtic syntax can lead to confusion sometimes. So instead of backtics use the $(...) syntax. And you don't need to use pkg-config twice, once for --cflags and again for --libs, they can be combined.

[pirog]

I agree with you. I personally use autoconf tools to create projects. But I was responding to the OP. The backtic syntax can lead to confusion sometimes. So instead of backtics use the $(...) syntax. And you don't need to use pkg-config twice, once for --cflags and again for --libs, they can be combined.

soz. yeah, sure this is a good example for compiling through terminal especially when you don't want to get messy with Makefiles. yet you don't have to define pkg-config flags twice, just use $(FLAGS) for substitution. It does not really make difference when you use libs or cflags (whether at compile or linking stages) and hence you can use pkg-config just once. then again, everyone likes doing it their way ;)

[blade__tang]

I have the same question,but I have resolved it. Cause my language version of ubuntu is Chinese, I have to translate the button from Chinese to English. Maybe there will be a littile mistake. Select buile->set buile parameters.

compile:gcc -Wall -c "%f" `pkg-config --cflags --libs gtk+-2.0`
buile:gcc -Wall -o "%e" "%f" `pkg-config --cflags --libs gtk+-2.0`

Then have a try again