1 files changed, 113 insertions, 0 deletions
diff --git a/bsd.after-import.mk b/bsd.after-import.mk
new file mode 100644
index 0000000..85bd2c1
--- /dev/null
+++ b/bsd.after-import.mk
@@ -0,0 +1,113 @@
+# $Id: bsd.after-import.mk,v 1.11 2012/12/29 19:32:25 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
+
+# .../share/mk will find ${SRCTOP}/share/mk
+# if we are within ${SRCTOP}
+DEFAULT_SYS_PATH= .../share/mk:/usr/share/mk
+
+BOOTSTRAP_ARGS = \
+	--with-default-sys-path='${DEFAULT_SYS_PATH}' \
+	--prefix /usr \
+	--share /usr/share
+
+
+# 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 '/^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
+
+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}$$'; \
+	echo; echo '.sinclude "Makefile.inc"'; \
+	echo; echo 'SRCTOP?= $${.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>
+