Hey I just installed ubuntu on my laptop and I was wondering why I can't install gtk+2.0. I do apt-get libgtk+2.0-dev but when i check my version i get a message saying it is still 1.2

root@tux-laptop:/home/tux/Desktop/wifi/airsnort-0.2.7e# sudo apt-get install libgtk2.0-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
libgtk2.0-dev is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@tux-laptop:/home/tux/Desktop/wifi/airsnort-0.2.7e# gtk-config --version
1.2.10




how do i fix this?

Thanks for the help in advance,
Luca.

There is a bit of controversy over the development of gtk. The gtk 1.2 series doesn't have all the features of the gtk2.0 series, but runs faster. Since not every-one upgraded to gtk2.0, most computers need both gtk1.2 and gtk2.0. So, when you installed gtk2.0, it didn't remove gtk1.2, they are just installed alongside each other. That's why the 1.2 is still around.

Then why do I get this error when I try to run ./configure?

root@tux-laptop:/home/tux/Desktop/wifi/airsnort-0.2.7e# ./configure
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking whether to enable maintainer-specific portions of Makefiles... no
checking for style of include used by make... GNU
checking for gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking dependency style of gcc... gcc3
checking for library containing strerror... none required
checking for gcc... (cached) gcc
checking whether we are using the GNU C compiler... (cached) yes
checking whether gcc accepts -g... (cached) yes
checking for gcc option to accept ANSI C... (cached) none needed
checking dependency style of gcc... (cached) gcc3
checking for gcc... (cached) gcc
checking whether we are using the GNU C compiler... (cached) yes
checking whether gcc accepts -g... (cached) yes
checking for gcc option to accept ANSI C... (cached) none needed
checking dependency style of gcc... (cached) gcc3
checking how to run the C preprocessor... gcc -E
checking for egrep... grep -E
checking for ANSI C header files... yes
checking for pkg-config... /usr/local/bin/pkg-config
checking for gtk+-2.0 >= 2.0.0... Package gtk+-2.0 was not found in the pkg-config search path. Perhaps you should add the directory containing `gtk+-2.0.pc' to the PKG_CONFIG_PATH environment variable No package 'gtk+-2.0' found
configure: error: Library requirements (gtk+-2.0 >= 2.0.0) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.

Anyone know a way to solve this problem?

Well, the problem is probably that your PKG_CONFIG_PATH is wrong, as the error message indicates. Normally, pkg-config will look *.pc files in PREFIX/lib/pkgconfig. However, I see that you have pkg-config installed under /usr/local for some reason, whereas apt-get will be installing the files under /usr. So it may just be looking in the wrong place. Try setting PKG_CONFIG_PATH=/usr/lib/pkgconfig and see if that helps.

Thanks that seemed to fix the problem!