i have noticed that fedora core 11 already comes with log4cpp rpm, if you need to install log4cpp on a FC9 or FC10 you will need to compile it yourself ( i could not find any preconfigured version )
here is how i managed to compile and install log4cpp on fedora core 10
1) download and unpack log4cpp
wget http://www.cloudpedia.org/downloads/log4cpp-1.0.tar.gz
tar zxvf log4cpp-1.0.tar.gz
2) download and install patches ( it will not compile without applying them )
wget http://www.cloudpedia.org/downloads/log4cpp-1.0-gcc43.patch
wget http://www.cloudpedia.org/downloads/log4cpp-1.0-no-snprintf.patch
wget http://www.cloudpedia.org/downloads/log4cpp-1.0-remove-pc-cflags.patch
patch -p0 < log4cpp-1.0-fix-doc-dest.patch
patch -p0 < log4cpp-1.0-gcc43.patch
patch -p0 < log4cpp-1.0-no-snprintf.patch
patch -p0 < log4cpp-1.0-remove-pc-cflags.patch
3) configure and install
./configure
make
make install
4) you may now finally go back and solve other dependencies
hope this one is solved now i spent a weekend on it until i found the right patches
good luck