Hello, Since there is a new file included in the compilation process, you need to do the following to apply the patch : tar -xzf stunnel-4.26.tar.gz -C /your/path/ cd /your/path/stunnel-4.26 patch -p1 < attachment-0001.bin aclocal && autoconf && automake && ./configure && make
You can safely ignore the error on the last file when applying the patch (it seems it lacks a carriage return).