Starting point for new make files

Makefile

# run with: $ make
# or make -j4 to run in parallel

.PHONY: all help # rules that do not correspond to a output file
.SUFFIXES: # disable built-in rules
.SECONDARY: # do not delete intermediate products

# first rule is default
all: mytarget

help:
  # self-document the available rules
  @grep "^[^ ]*:" Makefile | grep -v "nohelp"

%.out: %.csv 
  echo "stem(% wildcard) is:" $*
  echo "input:" $<
  echo "output:" $@
  # see https://www.gnu.org/software/make/manual/html_node/Automatic-Variables.html