make_numtree1.ksh93 - build makefile to generate number sequence
Posted by Anonymous on Fri 19th Jul 2024 00:31
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modification of post by Anonymous (view diff)

#!/bin/ksh93

#
# make_numtree1.ksh93 - build makefile to generate number sequence
# The resulting Makefile is intended to be used with $ make -j128 all #
# as filesystem test
#
# Written by Roland Mainz <roland.mainz@nrubsig.org>
#

function make_number_seq
{
#       set -o nounset

        nameref out_maketarget=$1
        integer start_i=$2
        integer stop_i=$3
        integer i
        typeset -a make_targets

        if (( (stop_i - start_i) > 10 )) ; then
                (( i=(stop_i - start_i)/2 ))
                make_number_seq make_targets[0] $start_i $(( start_i+i ))
                make_number_seq make_targets[1] $(( start_i+i )) $stop_i
        else
                for ((i=start_i ; i < stop_i ; i++ )) ; do
                        printf 'i_%d:\n' i
                        printf '\t@printf "%d\\n" >"i_%d"\n' i i
                        make_targets+=( "i_$i" )
                done
        fi

        out_maketarget="i_${start_i}_${stop_i}"
        printf 'i_%d_%d: %s\n' start_i stop_i "${make_targets[*]}"

        printf '\tcat '
        printf '%q ' "${make_targets[@]}"
        printf ' >"%s"\n' "$out_maketarget"

        return 0
}

typeset make_target

make_number_seq make_target 0 1000

printf 'all: %s\n' "$make_target"
# EOF.