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Move libcrypto, librpcsvc and gnu/usr.bin/cc/include from RDIRS to PRDIRS,
and add prereq targets, so some header files are generated by BUILDUSER
during 'make prereq' instead of by root during 'make includes'.

Switch the order of 'make cleandir' and 'make includes' during 'make build'
so we don't generate many files twice.

Except for some machine@ symlinks from ${MACHINE}/stand, /usr/obj is now
clean from files generated by root during 'make build'. Those will be
cleaned up in a second step.

help, testing & ok deraadt, input from natano, further testing rpe

#	$OpenBSD: Makefile,v 1.214 2016/10/16 19:28:44 tb Exp $
#	$NetBSD: Makefile,v 1.59 1996/05/15 21:36:43 jtc Exp $

#	@(#)Makefile	5.45.1.1 (Berkeley) 5/6/91

# The ``rm -rf''s used below are safe because rm doesn't follow symbolic
# links.


.include <bsd.own.mk>

FILES=	a.out.h ar.h asr.h assert.h bitstring.h blf.h bsd_auth.h \
	complex.h cpio.h ctype.h curses.h db.h dirent.h disktab.h \
	dlfcn.h elf_abi.h err.h errno.h fenv.h float.h fnmatch.h fstab.h fts.h \
	ftw.h getopt.h glob.h grp.h icdb.h ieeefp.h ifaddrs.h inttypes.h \
	iso646.h kvm.h langinfo.h libgen.h limits.h link.h link_elf.h \
	locale.h login_cap.h math.h md5.h memory.h ndbm.h netdb.h netgroup.h \
	nlist.h nl_types.h paths.h poll.h pwd.h ranlib.h readpassphrase.h \
	regex.h resolv.h rmd160.h search.h setjmp.h sha1.h sha2.h signal.h \
	siphash.h sndio.h spawn.h stdbool.h stddef.h stdio.h stdlib.h \
	string.h strings.h struct.h sysexits.h tar.h tgmath.h tib.h time.h \
	ttyent.h unistd.h utime.h utmp.h uuid.h vis.h wchar.h wctype.h

MFILES=	frame.h
LFILES=	endian.h fcntl.h syslog.h termios.h stdarg.h stdint.h varargs.h

DIRS=	arpa protocols rpc rpcsvc
LDIRS=	crypto ddb dev isofs miscfs msdosfs net netinet netinet6 \
	netmpls net80211 nfs ntfs scsi sys ufs uvm

# Places that need a prerequisite target met before includes
PRDIRS=	../lib/libcrypto ../lib/librpcsvc

# Directories with an includes target
RDIRS=	../lib/libcurses ../lib/libedit \
	../lib/libevent ../lib/libexpat ../lib/libform \
	../lib/libfuse ../lib/libkeynote ../lib/libmenu \
	../lib/libossaudio ../lib/libpanel ../lib/libpcap \
	../lib/libradius ../lib/librthread \
	../lib/libskey ../lib/libssl  ../lib/libtls \
	../lib/libusbhid ../lib/libutil ../lib/libz \
	../usr.bin/lex ../gnu/lib/libreadline \
	../sys/arch/${MACHINE}

.if ${COMPILER_VERSION:L} == "gcc3"
RDIRS+= ../gnu/usr.bin/gcc ../gnu/lib/libobjc
PRDIRS+= ../gnu/lib/libstdc++
.else
RDIRS+= ../gnu/usr.bin/cc/libobjc
PRDIRS+= ../gnu/lib/libstdc++-v3 ../gnu/usr.bin/cc/include
.endif

# prereq implies includes
RDIRS += ${PRDIRS}

NOOBJ=	noobj

# Change SYS_INCLUDE in bsd.own.mk to "symlinks" if you don't want copies
SYS_INCLUDE?=	copies

RUN_MAKE = if test -f Makefile.bsd-wrapper; then ${MAKE} -f Makefile.bsd-wrapper $@; else ${MAKE} $@; fi

prereq:
	@for i in ${PRDIRS}; do \
		echo preparing in ${.CURDIR}/$$i; \
		cd ${.CURDIR}/$$i && ${RUN_MAKE}; \
	done

includes:
	@echo installing ${FILES}
	@for i in ${FILES}; do \
		cmp -s $$i ${DESTDIR}/usr/include/$$i || \
		    ${INSTALL} ${INSTALL_COPY} -m 444 $$i ${DESTDIR}/usr/include/$$i; \
	done
	@echo installing ${DIRS}
	@for i in ${DIRS}; do \
		${INSTALL} -d -o ${BINOWN} -g ${BINGRP} -m 755 \
			${DESTDIR}/usr/include/$$i; \
		cd ${.CURDIR}/$$i && for j in *.[ih]; do \
			cmp -s $$j ${DESTDIR}/usr/include/$$i/$$j || \
			${INSTALL} ${INSTALL_COPY} -m 444 $$j ${DESTDIR}/usr/include/$$i/$$j; \
		done; \
	done
	@ln -sfh openssl ${DESTDIR}/usr/include/ssl
	@echo installing ${LFILES}
	@for i in ${LFILES}; do \
		rm -f ${DESTDIR}/usr/include/$$i && \
		ln -s sys/$$i ${DESTDIR}/usr/include/$$i; \
	done
	@echo installing ${MFILES}
	@for i in ${MFILES}; do \
		rm -f ${DESTDIR}/usr/include/$$i && \
		ln -s machine/$$i ${DESTDIR}/usr/include/$$i; \
	done
	chown -R ${BINOWN}:${BINGRP} ${DESTDIR}/usr/include
	find ${DESTDIR}/usr/include -type f -print0 | \
		xargs -0r chmod a=r
	find ${DESTDIR}/usr/include -type d -print0 | \
		xargs -0r chmod u=rwx,go=rx
	@for i in ${RDIRS}; do \
		echo installing in ${.CURDIR}/$$i; \
		cd ${.CURDIR}/$$i && ${RUN_MAKE}; \
	done

copies:
	@echo copies: ${LDIRS}
	@for i in ${LDIRS}; do \
		rm -rf ${DESTDIR}/usr/include/$$i && \
		${INSTALL} -d -o ${BINOWN} -g ${BINGRP} -m 755 \
			${DESTDIR}/usr/include/$$i ; \
	done
	cd ../sys; \
	pax -rw -pa -L \
	    `find ${LDIRS} -follow -type f -name '*.h' '!' \
	    '(' -path 'dev/microcode/*' -or -path 'dev/pci/drm/*' ')' \
	    -print` ${DESTDIR}/usr/include
	cd ${DESTDIR}/usr/include && rm -rf ${MACHINE} ${MACHINE_CPU} machine
	${INSTALL} -d -o ${BINOWN} -g ${BINGRP} -m 755 \
		${DESTDIR}/usr/include/${MACHINE}
	pax -rw -pa -s "|\.\./sys/arch/${MACHINE}/include||" \
	    ../sys/arch/${MACHINE}/include/*.h \
	    ${DESTDIR}/usr/include/${MACHINE}
	if test ${MACHINE} != ${MACHINE_CPU} -a \
	    -d ../sys/arch/${MACHINE_CPU}/include; then \
		${INSTALL} -d -o ${BINOWN} -g ${BINGRP} -m 755 \
	    	    ${DESTDIR}/usr/include/${MACHINE_CPU}; \
		pax -rw -pa -s "|\.\./sys/arch/${MACHINE_CPU}/include||" \
		    ../sys/arch/${MACHINE_CPU}/include/*.h \
		    ${DESTDIR}/usr/include/${MACHINE_CPU}; \
	fi
	ln -sf ${MACHINE} ${DESTDIR}/usr/include/machine; \

symlinks:
	@echo symlinks: ${LDIRS}
	@for i in ${LDIRS}; do \
		rm -rf ${DESTDIR}/usr/include/$$i && \
		ln -s /sys/$$i ${DESTDIR}/usr/include/$$i; \
	done
	cd ${DESTDIR}/usr/include && rm -rf ${MACHINE} ${MACHINE_CPU} machine
	ln -s /sys/arch/${MACHINE}/include ${DESTDIR}/usr/include/${MACHINE}
	if test ${MACHINE} != ${MACHINE_CPU} -a \
	    -d ../sys/arch/${MACHINE_CPU}/include ; then \
		ln -s /sys/arch/${MACHINE_CPU}/include \
		    ${DESTDIR}/usr/include/${MACHINE_CPU} ; \
	fi
	ln -sf ${MACHINE} ${DESTDIR}/usr/include/machine

includes: ${SYS_INCLUDE}

.PHONY: prereq includes copies symlink
.include <bsd.prog.mk>