Since linux kernel version >= 3.10 bc is needed to build it, which is a side-effect of removing the dependency on perl.
@ -121,6 +121,17 @@ if [ -z "`type -p bison`" ] ; then
found_error=1
fi
if [ -z "`type -p bc`" ] ; then
cat <<-EOT
Paranoia Check: Program 'bc' not found!
The bc program is needed for compiling linux kernels >= 3.10.
Please make sure that a current version of the bc package is
installed on your system.
EOT
case $BASH_VERSION in
2.05b*) ;;
3.*) ;;