Configuring libgraph : SDL_Image not found even though it is installed

I got to install libgraph (1.0.1) in my Crunchbang (Debian/7.7) system.
Of course you have some dependencies before that. SDL_Image was downloaded and installed from source successfully. I compiled a C++ program with SDL headers to test it out..ran perfectly.
However, while running ./configure it still throws :

checking SDL  ==>  SDL_image library... configure: error: *** 
: *** SDL_image not found

The SDL and SDL_image packages are installed.

devesh@crunchbang:~/downloads/libgraph-1.0.1$ dpkg --get-selections | grep sdl
libsdl-image1.2:amd64               install
libsdl1.2-dev                       install
libsdl1.2debian:amd64               install
libsdl1.2debian:i386                install

From other questions, it could be that SDL_image file's may be in a different directory, other than the 'default' ones. But SDL was detected, and they're installed in the same place. What's the issue?

Solution

Just one look in the README file in the libgraph directory gives me this:

You need to have the following installed : 
SDL-x.x.x.rpm               -- the main SDL library
SDL-devel-x.x.x.rpm         -- the developer package
SDL_image-x.x.x.rpm         -- image library for fonts
SDL_image-devel-x.x.x.rpm   -- image library developer

I installed libsdl1.2-dev and voila!
SDL_Image detected.
Only to stumble upon another bunch of packages not installed :-P. (guile and what not) But got the problem at hand! Thanks