1 2# Build a bootstrap version of m4 (needed in order to build libelf and lex) 3.PATH: ${SRCTOP}/usr.bin/m4 ${.CURDIR} 4 5# Avoid using lex or yacc to generate sources 6LEX:=/this/should/not/be/used 7 8tokenizer.c: bootstrap_m4_tokenizer 9 test -e ${.TARGET} 10 11# This target is used as a marker in usr.bin/m4/Makefile to not add the 12# lex and yacc includes. Therefore we must define it before including 13# the other Makefile. 14bootstrap_m4_tokenizer: inittokenizer.c 15.for _f in tokenizer.c 16 @cmp -s ${.CURDIR}/init${_f} ${_f} || { \ 17 echo "Bootstrapping ${_f}" ; \ 18 ${CP} ${.CURDIR}/init${_f} ${_f} ; \ 19 } 20.endfor 21 22BINDIR= /usr/bin 23.include "${SRCTOP}/usr.bin/m4/Makefile" 24 25regen: 26 (cd ${SRCTOP}/usr.bin/m4 && lex -t ${SRCTOP}/usr.bin/m4/tokenizer.l) | grep -v '#line' > inittokenizer.c 27