root@IBN5100:/home/osutapu/Desktop/r8168-8.039.00# sh 'autorun.sh'

Check old driver and unload it.
rmmod r8169
Build the module and install
make[2]: gcc: Command not found
arch/x86/Makefile:121: stack-protector enabled but compiler support broken
arch/x86/Makefile:136: CONFIG_X86_X32 enabled but no binutils support
Makefile:652: Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: -fstack-protector not supported by compiler
make[2]: gcc: Command not found
/bin/sh: 1: gcc: not found
make[3]: *** [/home/osutapu/Desktop/r8168-8.039.00/src/r8168_n.o] Error 127
make[2]: *** [_module_/home/osutapu/Desktop/r8168-8.039.00/src] Error 2
make[1]: *** [modules] Error 2
make: *** [modules] Error 2