Hi. Im following this guide: http://www.howtoforge.com/perfect-server-debian-squeeze-with-bind-and-courier-ispconfig-3-p4 Now im at the stage where I try the following command: Code: ./debian/rules binary But then this error appears: Code: checking whether we are cross compiling... configure: error: in `/tmp/jailkit-2.13': configure: error: cannot run C compiled programs. If you meant to cross compile, use `--host'. See `config.log' for more details. make: *** [config.status] Error 1 I have checked so that "gcc is already the newest version.". libpq5 is also installed. Why cant my install compile this? Earlier when I tried to install ISPConfig2 (did not know about the new one) I got a similiar, compiler related, error: Code: ./setup Code: /usr/include/gnu/stubs.h:9:27: error: gnu/stubs-64.h: No such file or directory In file included from ../include/openssl/crypto.h:125, from cryptlib.h:72, from cryptlib.c:117: /usr/include/stdio.h:641:2: error: invalid preprocessing directive #extern /usr/include/stdio.h:642:10: error: invalid preprocessing directive #size_t /usr/include/stdio.h:643:10: error: invalid preprocessing directive #FILE make: *** [cryptlib.o] Error 1 make: Leaving directory `/root/install_ispconfig/compile_aps/openssl-0.9.8r/crypto' make: *** [build_crypto] Error 1 ERROR: Could not make OpenSSL How should I patch my debian so I can install stuff?