freebsd-dev/contrib/bmake/bsd.after-import.mk
Simon J. Gerraty 49caa483b3 Merge bmake-20200517
Changes since 20181221 are mostly portability related
hence the large gap in versions imported.

There are however some bug fixes, and a rework of filemon handling.
In NetBSD make/filemon/filemon_ktrace.c allows use of fktrace
and elimination of filemon(4) which has not had the TLC it needs.

FreeBSD filemon(4) is in much better shape, so bmake/filemon/filemon_dev.c
allows use of that, with a bit less overhead than the ktrace model.

Summary of changes from ChangeLog

	o str.c: empty string does not match % pattern
	  plus unit-test changes
	o var.c: import handling of old sysV style modifier using '%'
	o str.c: refactor brk_string
	o meta.c: meta_oodate, CHECK_VALID_META is too aggressive for CMD
	  a blank command is perfectly valid.
	o meta.c: meta_oodate, check for corrupted meta file
	  earlier and more often.
	* meta.c: meta_compat_parent check for USE_FILEMON
	  patch from Soeren Tempel
	o meta.c: fix compat mode, need to call meta_job_output()
	o job.c: extra fds for meta mode not needed if using filemon_dev
	o meta.c: avoid passing NULL to filemon_*() when meta_needed()
	  returns FALSE.
	o filemon/filemon_{dev,ktrace}.c: allow selection of
	  filemon implementation.  filemon_dev.c uses the kernel module
	  while filemon_ktrace.c leverages the fktrace api available in
	  NetBSD.  filemon_ktrace.c can hopefully form the basis for
	  adding support for other tracing mechanisms such as strace on
	  Linux.
	o meta.c: when target is out-of-date per normal make rules
	  record value of .OODATE in meta file.
	o parse.c: don't pass NULL to realpath(3)
	  some versions cannot handle it.
	o parse.c: ParseDoDependency: free paths rather than assert

plus more unit-tests
2020-05-20 22:25:46 +00:00

112 lines
3.4 KiB
Makefile

# $Id: bsd.after-import.mk,v 1.15 2018/12/30 17:14:24 sjg Exp $
# This makefile is for use when integrating bmake into a BSD build
# system. Use this makefile after importing bmake.
# It will bootstrap the new version,
# capture the generated files we need, and add an after-import
# target to allow the process to be easily repeated.
# The goal is to allow the benefits of autoconf without
# the overhead of running configure.
all: _makefile
all: after-import
# we rely on bmake
.if !defined(.PARSEDIR)
.error this makefile requires bmake
.endif
_this := ${MAKEFILE:tA}
BMAKE_SRC := ${.PARSEDIR}
# it helps to know where the top of the tree is.
.if !defined(SRCTOP)
srctop := ${.MAKE.MAKEFILES:M*src/share/mk/sys.mk:H:H:H}
.if empty(srctop)
# likely locations?
.for d in contrib/bmake external/bsd/bmake/dist
.if ${BMAKE_SRC:M*/$d} != ""
srctop := ${BMAKE_SRC:tA:S,/$d,,}
.endif
.endfor
.endif
.if !empty(srctop)
SRCTOP := ${srctop}
.endif
.endif
# This lets us match what boot-strap does
.if !defined(HOST_OS)
HOST_OS!= uname
.endif
BOOTSTRAP_ARGS = \
--prefix /usr \
--share /usr/share
.if !empty(DEFAULT_SYS_PATH)
BOOTSTRAP_ARGS += --with-default-sys-path='${DEFAULT_SYS_PATH}'
.endif
# run boot-strap with minimal influence
bootstrap: ${BMAKE_SRC}/boot-strap ${MAKEFILE}
HOME=/ ${BMAKE_SRC}/boot-strap -o ${HOST_OS} ${BOOTSTRAP_ARGS} ${BOOTSTRAP_XTRAS}
touch ${.TARGET}
# Makefiles need a little more tweaking than say config.h
MAKEFILE_SED = sed -e '/^MACHINE/d' \
-e '/include.*VERSION/d' \
-e '/^PROG/ { s,=,?=,;s,bmake,$${.CURDIR:T},; }' \
-e 's,^.-include,.sinclude,' \
-e '/^\..*include *</ { s,<,<bsd.,;/autoconf/d; }' \
-e 's,${SRCTOP},$${SRCTOP},g'
# These are the simple files we want to capture
configured_files= config.h Makefile.config unit-tests/Makefile.config
after-import: bootstrap ${MAKEFILE}
.for f in ${configured_files:M*.[ch]}
@echo Capturing $f
@mkdir -p ${${.CURDIR}/$f:L:H}
@(echo '/* $$${HOST_OS}$$ */'; cat ${HOST_OS}/$f) > ${.CURDIR}/$f
.endfor
.for f in ${configured_files:M*Makefile*}
@echo Capturing $f
@mkdir -p ${${.CURDIR}/$f:L:H}
@(echo '# This is a generated file, do NOT edit!'; \
echo '# See ${_this:S,${SRCTOP}/,,}'; \
echo '#'; echo '# $$${HOST_OS}$$'; echo; \
echo 'SRCTOP?= $${.CURDIR:${${.CURDIR}/$f:L:H:S,${SRCTOP}/,,:C,[^/]+,H,g:S,/,:,g}}'; echo; \
${MAKEFILE_SED} ${HOST_OS}/$f ) > ${.CURDIR}/$f
.endfor
# this needs the most work
_makefile: bootstrap ${MAKEFILE}
@echo Generating ${.CURDIR}/Makefile
@(echo '# This is a generated file, do NOT edit!'; \
echo '# See ${_this:S,${SRCTOP}/,,}'; \
echo '#'; echo '# $$${HOST_OS}$$'; \
echo; echo 'SRCTOP?= $${.CURDIR:${.CURDIR:S,${SRCTOP}/,,:C,[^/]+,H,g:S,/,:,g}}'; \
echo; echo '# look here first for config.h'; \
echo 'CFLAGS+= -I$${.CURDIR}'; echo; \
echo '# for after-import'; \
echo 'CLEANDIRS+= ${HOST_OS}'; \
echo 'CLEANFILES+= bootstrap'; echo; \
${MAKEFILE_SED} \
${1 2:L:@n@-e '/start-delete$n/,/end-delete$n/d'@} \
${BMAKE_SRC}/Makefile; \
echo; echo '# override some simple things'; \
echo 'BINDIR= /usr/bin'; \
echo 'MANDIR= ${MANDIR:U/usr/share/man}'; \
echo; echo '# make sure we get this'; \
echo 'CFLAGS+= $${COPTS.$${.IMPSRC:T}}'; \
echo; echo 'after-import: ${_this:S,${SRCTOP},\${SRCTOP},}'; \
echo ' cd $${.CURDIR} && $${.MAKE} -f ${_this:S,${SRCTOP},\${SRCTOP},}'; \
echo ) > ${.TARGET}
@cmp -s ${.TARGET} ${.CURDIR}/Makefile || \
mv ${.TARGET} ${.CURDIR}/Makefile
.include <bsd.obj.mk>