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28 lines
789 B
Makefile
28 lines
789 B
Makefile
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# $FreeBSD$
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# Build a bootstrap version of m4 (needed in order to build libelf and lex)
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.PATH: ${SRCTOP}/usr.bin/m4 ${.CURDIR}
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# Avoid using lex or yacc to generate sources
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LEX:=/this/should/not/be/used
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tokenizer.c: bootstrap_m4_tokenizer
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test -e ${.TARGET}
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# This target is used as a marker in usr.bin/m4/Makefile to not add the
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# lex and yacc includes. Therefore we must define it before including
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# the other Makefile.
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bootstrap_m4_tokenizer: inittokenizer.c
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.for _f in tokenizer.c
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@cmp -s ${.CURDIR}/init${_f} ${_f} || { \
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echo "Bootstrapping ${_f}" ; \
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${CP} ${.CURDIR}/init${_f} ${_f} ; \
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}
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.endfor
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BINDIR= /usr/bin
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.include "${SRCTOP}/usr.bin/m4/Makefile"
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regen:
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(cd ${SRCTOP}/usr.bin/m4 && lex -t ${SRCTOP}/usr.bin/m4/tokenizer.l) | grep -v '#line' > inittokenizer.c
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