Debian
From AMule Project FAQ
How to get crypto++ working on sarge debian:
Get libcrypto++ sources from sid
deb-src http://ftp.AT.debian.org/debian/ sid main non-free contrib apt-get update
apt-get source -b libcrypto++ or apt-get source libcrypto++, cd libcrypto++-5.1, dpkg-buildpackage -b -B -uc
After install (dpkg -i libcrypto++5.1.deb) make a symbolic link in /usr/include/crypto++ from cryptopp_config.h to config.h in the same directory.
ln -s /usr/include/crypto++/cryptopp_config.h /usr/include/crypto++/config.h
NOTE: you have to link the files cos of a bug in debian libcrypto package