LinuxQuestions.org - Need help with installing latest gtkpod... (.80)

When trying to configure gtkpod .80, I get an error. The thing is, the file they say is missing is actually there. What is wrong? Why is this happening? Any help is greatly appreciated.

Code:

$ ./configure

checking for a BSD-compatible install... /usr/bin/install -c

checking whether build environment is sane... yes

checking for gawk... gawk

checking whether make sets $(MAKE)... yes

checking whether to enable maintainer-specific portions of Makefiles... no

checking build system type... i686-pc-linux-gnu

checking host system type... i686-pc-linux-gnu

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 strerror in -lcposix... no

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 option to accept ANSI C... none needed

checking for pkg-config... ok

checking for pkg-config... /usr/bin/pkg-config

checking for gtk+-2.0 >= 2.4.0 gthread-2.0 >= 0.14.0 glib-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: ***

See `config.log' for more details.