Makefile

############################################################################
#
#              Another Programmer's Editor Makefile Template
#
# This is a template Makefile for a simple program.
# It is meant to serve as a starting point for creating a portable
# Makefile, suitable for use under ports systems like *BSD ports,
# MacPorts, Gentoo Portage, etc.
#
# The goal is a Makefile that can be used without modifications
# on any Unix-compatible system.
#
# Variables that are conditionally assigned (with ?=) can be overridden
# by the environment or via the command line as follows:
#
#       make VAR=value
#
# For example, MacPorts installs to /opt/local instead of the default
# ../local, and hence might use the following:
# 
#       make PREFIX=/opt/local
#
# Different systems may also use different compilers and keep libraries in
# different locations:
#
#       make CC=gcc CFLAGS=-O2 LDFLAGS="-L/usr/X11R6 -lX11"
#
# Variables can also inheret values from parent Makefiles (as in *BSD ports).
#
# Lastly, they can be overridden by the environment, e.g.
# 
#       setenv CFLAGS "-O -Wall -pipe"  # C-shell and derivatives
#       export CFLAGS="-O -Wall -pipe"  # Bourne-shell and derivatives
#       make
#
# All these override methods allow the Makefile to respect the environment
# in which it is used.
#
# You can append values to variables within this Makefile (with +=).
# However, this should not be used to add compiler-specific flags like
# -Wall, as this would disrespect the environment.
#
#   History: 
#   Date        Name        Modification
#   2021-12-20  Jason Bacon Begin
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# Install in ../local, unless defined by the parent Makefile, the
# environment, or a command line option such as PREFIX=/opt/local.
# FreeBSD ports sets this to /usr/local, MacPorts to /opt/local, etc.
PREFIX      ?= ../local

# Where to find local libraries and headers.  If you want to use libraries
# from outside ${PREFIX} (not usually recommended), you can set this
# independently.
LOCALBASE   ?= ${PREFIX}

# Allow caller to override either MANPREFIX or MANDIR
MANPREFIX   ?= ${PREFIX}
MANDIR      ?= ${MANPREFIX}/man
DATADIR     ?= ${PREFIX}/share/auto-admin

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# Assume first command in PATH.  Override with full pathnames if necessary.
# E.g. "make INSTALL=/usr/local/bin/ginstall"
# Do not place flags here (e.g. RM = rm -f).  Just provide the command
# and let flags be specified separately.

CP      ?= cp
MV      ?= mv
MKDIR   ?= mkdir
LN      ?= ln
RM      ?= rm

# No full pathnames for these.  Allow PATH to dtermine which one is used
# in case a locally installed version is preferred.
PRINTF  ?= printf
INSTALL ?= install

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# Standard targets required by package managers

.PHONY: all install help

all:
	@echo "Nothing to build."

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# Install all target files (binaries, libraries, docs, etc.)

install:
	${MKDIR} -p ${DESTDIR}${PREFIX}/bin ${DESTDIR}${PREFIX}/sbin \
	    ${DESTDIR}${MANDIR}/man8 ${DESTDIR}${DATADIR}
	${INSTALL} -m 0755 Sys-scripts/* ${DESTDIR}${PREFIX}/sbin
	${INSTALL} -m 0755 User-scripts/* ${DESTDIR}${PREFIX}/bin
	${INSTALL} -m 0644 Man/* ${DESTDIR}${MANDIR}/man8
	${CP} -R Data/* ${DESTDIR}${DATADIR}

help:
	@printf "Usage: make [VARIABLE=value ...] all\n\n"
	@printf "Some common tunable variables:\n\n"
	@printf "\tCC        [currently ${CC}]\n"
	@printf "\tCFLAGS    [currently ${CFLAGS}]\n"
	@printf "\tCXX       [currently ${CXX}]\n"
	@printf "\tCXXFLAGS  [currently ${CXXFLAGS}]\n"
	@printf "\tF77       [currently ${F77}]\n"
	@printf "\tFC        [currently ${FC}]\n"
	@printf "\tFFLAGS    [currently ${FFLAGS}]\n\n"
	@printf "View Makefile for more tunable variables.\n\n"