Digikam doesn't compile

I can't compile digikam. What can I do ?

First, check that you have development files installed in your linux system. digikam depends on a lot of libs and you must have the headers to compile it.
Usually, linux distributions have -dev packages when you want to compile something against a specific library. For a list of required dependencies, read the README file. Here's the current README (svn version).
On debian-based distribution (eg Debian, Ubuntu), you can install the required packages with :

apt-get build-dep digikam

If there are some warnings about unsermake, set the $UNSERMAKE environment variable as "no". Eg :

export UNSERMAKE=no

Look also at the download page for more informations (tarball and svn sections). If you still have problems, check the support page.