CadSoft’s Eagle (a well known CAD tool for designing PCBs) is not compatible as-is with Linux 64 bit. In my case, after a fresh Fedora 14 install, I was getting this error:

# sh eagle-lin-5.10.0.run
eagle-lin-5.10.0.run: /tmp/eagle-setup.3778/eagle-5.10.0/bin/eagle: /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory  

To get the thing done it’s enough to install the proper 32 bit libraries. On Fedora use yum to update the openssl package and then install the needed packages:

# yum update openssl
# yum install glibc.i686 libXrender.i686 libXrandr.i686 libXcursor.i686 freetype.i686 fontconfig.i686 libXi.i686 libpng.i686 openssl.i686 crypto.i686 libjpeg-turbo.i686 libstdc++.i686

Eagle is compiled with openssl 0.9.8, Fedora 14 ships with openssl 1.0, so we need to cheat a bit with symlinks:

# ln -s /usr/lib/libssl.so.10 /usr/lib/libssl.so.0.9.8
# ln -s /lib/libcrypto.so.10 /lib/libcrypto.so.0.9.8

Now your system is ready to run the Eagle installer.