sh ./Configure -des -Dusedevel \
            -Duseithreads \
            -Doptimize="-O2 -pipe -fstack-protector -fno-strict-aliasing"

echo av.c scope.c op.c doop.c doio.c dump.c gv.c hv.c mg.c reentr.c mro_core.c perl.c perly.c pp.c pp_hot.c pp_ctl.c pp_sys.c regcomp.c regexec.c utf8.c sv.c taint.c toke.c util.c deb.c run.c universal.c pad.c globals.c keywords.c perlio.c numeric.c mathoms.c locale.c pp_pack.c pp_sort.c caretx.c dquote.c time64.c  miniperlmain.c opmini.c perlmini.c | tr ' ' '\n' >.clist
make[1]: don't know how to make av.c.depends. Stop

make[1]: stopped in /usr/home/jkeenan/gitwork/perl
cat: av.c.depends: No such file or directory
cat: scope.c.depends: No such file or directory
cat: op.c.depends: No such file or directory
cat: doop.c.depends: No such file or directory
cat: doio.c.depends: No such file or directory
cat: dump.c.depends: No such file or directory
cat: gv.c.depends: No such file or directory
cat: hv.c.depends: No such file or directory
cat: mg.c.depends: No such file or directory
cat: reentr.c.depends: No such file or directory
cat: mro_core.c.depends: No such file or directory
cat: perl.c.depends: No such file or directory
cat: perly.c.depends: No such file or directory
cat: pp.c.depends: No such file or directory
cat: pp_hot.c.depends: No such file or directory
cat: pp_ctl.c.depends: No such file or directory
cat: pp_sys.c.depends: No such file or directory
cat: regcomp.c.depends: No such file or directory
cat: regexec.c.depends: No such file or directory
cat: utf8.c.depends: No such file or directory
cat: sv.c.depends: No such file or directory
cat: taint.c.depends: No such file or directory
cat: toke.c.depends: No such file or directory
cat: util.c.depends: No such file or directory
cat: deb.c.depends: No such file or directory
cat: run.c.depends: No such file or directory
cat: universal.c.depends: No such file or directory
cat: pad.c.depends: No such file or directory
cat: globals.c.depends: No such file or directory
cat: keywords.c.depends: No such file or directory
cat: perlio.c.depends: No such file or directory
cat: numeric.c.depends: No such file or directory
cat: mathoms.c.depends: No such file or directory
cat: locale.c.depends: No such file or directory
cat: pp_pack.c.depends: No such file or directory
cat: pp_sort.c.depends: No such file or directory
cat: caretx.c.depends: No such file or directory
cat: dquote.c.depends: No such file or directory
cat: time64.c.depends: No such file or directory
cat: miniperlmain.c.depends: No such file or directory
cat: opmini.c.depends: No such file or directory
cat: perlmini.c.depends: No such file or directory
Should not get here
*** Error code 1

Stop.
make: stopped in /usr/home/jkeenan/gitwork/perl

commit 8d469d0ecbd06a993426de11b8feec551378525b
Author:     Max Maischein <[email protected]>
AuthorDate: Mon Dec 28 12:00:49 2020
Commit:     Karl Williamson <[email protected]>
CommitDate: Wed Aug 11 16:01:16 2021

    WIP: Run `makedepend` in parallel by using `make`
    
    This moves the per-file loop body of `makedepend` into a separate
    file named `makedepend_file` and then uses `make` to launch
    the `makedepend_file` processes for each target potentially in parallel.
    
    This reduces the time for
    
      time sh ./makedepend MAKE=make cflags
    
    from 5 seconds to 2 seconds with MAKEFLAGS=-j8