BSD make (bmake) and its .mk includes are really simple, it's basically make with batteries included. Many makefiles may be reduced to two lines while no new syntax is introduced:
PROG=${.CURDIR:T}
.include
It indirectly extends original BSD make. There are some syntactic differences from GNU make, but no big depart.
See http://www.crufty.net/help/sjg/bmake.htm
Here is a custom BSDmakefile for my website, a more extensive example where the mk libraries can't apply:
# makefile -- Build the website.
#
# $Id: makefile,v 1.10 2016/08/15 12:55:49 igk Exp $
#
#
M4=m4
AWK=awk
SED=sed
TIDY=tidy5
TARGS=-i -utf8
include config.mk
# Common templates for each output file.
MACROES=html.m4 config.m4
TMPL=${MACROES} meta.m4 header.html.m4 HERE footer.html.m4
HTML+=${LISTS:S/$/.html/}
ATOM=${LISTS:S/$/.atom.xml/}
OUT=${HTML} ${HTML:S/html$/&.m4/} ${HTML:S/html$/&.dirty/} ${ATOM}
.MAIN: ${HTML} ${ATOM}
# Generate lists.
.for L in ${LISTS}
$L.txt: $L.list
${AWK} -f list.awk ${.ALLSRC} > ${.TARGET}
$L.atom.xml: $L.list
${AWK} -f atom.awk ${.ALLSRC} \
| ${M4} ${MACROES} - \
| ${SED} '1,2d' > ${.TARGET}
.endfor
.ifndef NOTIDY
.for P in ${HTML}
$P : ${P}.dirty
${TIDY} ${TARGS} ${.ALLSRC} 2>/dev/null > ${.TARGET} || true
.endfor
.for P in ${HTML}
$P.dirty : ${TMPL:S/HERE/$P.m4/}
$(M4) ${.ALLSRC} > ${.TARGET}
.endfor
.else
.for P in ${HTML}
$P : ${TMPL:S/HERE/$P.m4/}
$(M4) ${.ALLSRC} > ${.TARGET}
.endfor
.endif # NOTIDY
.for P in ${HTML}
${P}.m4 : ${P:S/html$/txt/}
$(AWK) -f page.awk ${.ALLSRC} > ${.TARGET}
.endfor
clean:
rm -f ${OUT}
.PHONY: uuid pub ssh anal
uuid:
sh ./make-uuid.sh
pub:
sh ./publish.sh
ssh:
sh ./s.sh
anal:
sh ./analytics.sh