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