xref: /src/distrib/sets/sets.subr

#	$NetBSD: sets.subr,v 1.180 2017/11/22 21:31:20 christos Exp $
#

#
# The following variables contain defaults for sets.subr functions and callers:
#	setsdir			path to src/distrib/sets
#	nlists			list of base sets
#	xlists			list of x11 sets
#	extlists		list of extsrc sets
#	obsolete		controls if obsolete files are selected instead
#	module			if != "no", enable MODULE sets
#	shlib			shared library format (a.out, elf, or "")
#	stlib			static library format (a.out, elf)
#
# The following <bsd.own.mk> variables are exported to the environment:
#	MACHINE	
#	MACHINE_ARCH
#	MACHINE_CPU
#	HAVE_BINUTILS
#	HAVE_GCC
#	HAVE_GDB
#	HAVE_SSP
#	TOOLCHAIN_MISSING
#	OBJECT_FMT
# as well as:
#

#
# The following variables refer to tools that are used when building sets:
#
: ${AWK:=awk}
: ${CKSUM:=cksum}
: ${COMM:=comm}
: ${DATE:=date}
: ${DB:=db}
: ${EGREP:=egrep}
: ${ENV_CMD:=env}       # ${ENV} is special to sh(1), ksh(1), etc.
: ${FGREP:=fgrep}
: ${FIND:=find}
: ${GREP:=grep}
: ${GZIP_CMD:=gzip}     # ${GZIP} is special to gzip(1)
: ${HOSTNAME_CMD:=hostname}	# ${HOSTNAME} is special to bash(1)
: ${HOST_SH:=sh}
: ${IDENT:=ident}
: ${JOIN:=join}
: ${LS:=ls}
: ${MAKE:=make}
: ${MKTEMP:=mktemp}
: ${MTREE:=mtree}
: ${PASTE:=paste}
: ${PAX:=pax}
: ${PRINTF:=printf}
: ${SED:=sed}
: ${SORT:=sort}
: ${STAT:=stat}
: ${TSORT:=tsort}
: ${UNAME:=uname}
: ${WC:=wc}
: ${XARGS:=xargs}

#
# If printf is a shell builtin command, then we can
# implement cheaper versions of basename and dirname
# that do not involve any fork/exec overhead.
# If printf is not builtin, approximate it using echo,
# and hope there are no weird file names that cause
# some versions of echo to do the wrong thing.
# (Converting to this version of dirname speeded up the
# syspkgdeps script by an order of magnitude, from 68
# seconds to 6.3 seconds on one particular host.)
#
# Note that naive approximations for dirname
# using ${foo%/*} do not do the right thing in cases
# where the result should be "/" or ".".
#
case "$(type printf)" in
*builtin*)
	basename ()
	{
		local bn
		bn="${1##*/}"
		bn="${bn%$2}"
		printf "%s\n" "$bn"
	}
	dirname ()
	{
		local dn
		case "$1" in
		?*/*)	dn="${1%/*}" ;;
		/*)	dn=/ ;;
		*)	dn=. ;;
		esac
		printf "%s\n" "$dn"
	}
	;;
*)
	basename ()
	{
		local bn
		bn="${1##*/}"
		bn="${bn%$2}"
		echo "$bn"
	}
	dirname ()
	{
		local dn
		case "$1" in
		?*/*)	dn="${1%/*}" ;;
		/*)	dn=/ ;;
		*)	dn=. ;;
		esac
		echo "$dn"
	}
	;;
esac

#####

oIFS=$IFS
IFS="
"

for x in $( MAKEVERBOSE= ${MAKE} -B -f ${rundir}/mkvars.mk mkvars ); do
	eval export $x
done

IFS=$oIFS

MKVARS="$( MAKEVERBOSE= ${MAKE} -B -f ${rundir}/mkvars.mk mkvars | ${SED} -e 's,=.*,,' | ${XARGS} )"

#####

setsdir=${rundir}
obsolete=0
if [ "${MKKMOD}" = "no" ]; then
	module=no			# MODULEs are off.
	modset=""
else
	module=yes
	modset="modules"
fi
if [ "${MKATF}" = "no" ]; then
	testset=""
else
	testset="tests"
fi
if [ "${MKDEBUG}" = "no" -a "${MKDEBUGLIB}" = "no" ]; then
	debugset=""
	xdebugset=""
else
	debugset="debug"
	xdebugset="xdebug"
fi
# Determine lib type. Do this first so stlib also gets set.
if [ "${OBJECT_FMT}" = "ELF" ]; then
	shlib=elf
else
	shlib=aout
fi
stlib=$shlib
# Now check for MKPIC or specials and turn off shlib if need be.
if [ "${MKPIC}" = "no" ]; then
	shlib=no
fi
nlists="base comp $debugset etc games man misc $modset $testset text"
xlists="xbase xcomp $xdebugset xetc xfont xserver"
extlists="extbase extcomp extetc"

OSRELEASE=$(${HOST_SH} ${NETBSDSRCDIR}/sys/conf/osrelease.sh -k)
MODULEDIR="stand/${MACHINE}/${OSRELEASE}/modules"
SUBST="s#@MODULEDIR@#${MODULEDIR}#g"
SUBST="${SUBST};s#@OSRELEASE@#${OSRELEASE}#g"
SUBST="${SUBST};s#@MACHINE@#${MACHINE}#g"

#
# list_set_files setfile [...]
# 
# Produce a packing list for setfile(s).
# In each file, a record consists of a path and a System Package name,
# separated by whitespace. E.g.,
#
# 	# $NetBSD: sets.subr,v 1.180 2017/11/22 21:31:20 christos Exp $
# 	.			base-sys-root	[keyword[,...]]
# 	./altroot		base-sys-root
# 	./bin			base-sys-root
# 	./bin/[			base-util-root
# 	./bin/cat		base-util-root
#		[...]
#
# A # in the first column marks a comment.
#
# If ${obsolete} != 0, only entries with an "obsolete" keyword will
# be printed.  All other keywords must be present.
#
# The third field is an optional comma separated list of keywords to
# control if a record is printed; every keyword listed must be enabled
# for the record to be printed. The list of all avalaible make variables
# that can be turned on or off can be found by running in this directory:
#
#	make -f mkvars.mk mkvarsyesno
#
# These MK<NAME> variables can be used as selectors in the sets as <name>.
# 
# The following extra keywords are also available, listed by:
#
#	make -f mkvars.mk mkextravars
#
# These are:
#    1. The HAVE_<name>:
#	ssp			${HAVE_SSP} != no
#	libgcc_eh		${HAVE_LIBGCC_EH} != no
#	binutils=<n>		<n> = value of ${HAVE_BINUTILS}
#	gcc=<n>			<n> = value of ${HAVE_GCC}
#	gdb=<n>			<n> = value of ${HAVE_GDB}
#	xorg_server_ver=<n>	<n> = value of ${HAVE_XORG_SERVER_VER}
#
#    2. The USE_<name>:
#	use_inet6		${USE_INET6} != no
#	use_kerberos		${USE_KERBEROS} != no
#	use_ldap		${USE_LDAP} != no
#	use_yp			${USE_YP} != no
#
#    3. Finally:
#	dummy			dummy entry (ignored)
#	obsolete		file is obsolete, and only printed if 
#				${obsolete} != 0
#
#	solaris			${MKDTRACE} != no or ${MKZFS} != no or ${MKCTF} != no
#
#
#	endian=<n>		<n> = value of ${TARGET_ENDIANNESS}
#
#
#	.cat			if ${MKMANZ} != "no" && ${MKCATPAGES} != "no"
#				  automatically append ".gz" to the filename
#
#	.man			if ${MKMANZ} != "no" && ${MKMAN} != "no"
#				  automatically append ".gz" to the filename
#
list_set_files()
{
	if [ ${MAKEVERBOSE:-2} -lt 3 ]; then
		verbose=false
	else
		verbose=true
	fi
	print_set_lists "$@" | \
	${AWK} -v obsolete=${obsolete} '
		BEGIN {
			if (obsolete)
				wanted["obsolete"] = 1
		
			split("'"${MKVARS}"'", needvars)
			doingcompat = 0
			doingcompattests = 0
			ignoredkeywords["compatdir"] = 1
			ignoredkeywords["compatfile"] = 1
			ignoredkeywords["compattestdir"] = 1
			ignoredkeywords["compattestfile"] = 1
			ignoredkeywords["compatx11dir"] = 1
			ignoredkeywords["compatx11file"] = 1
			for (vi in needvars) {
				nv = needvars[vi]
				kw = tolower(nv)
				sub(/^mk/, "", kw)
				sub(/^have_/, "", kw)
				sub(/^target_endianness/, "endian", kw)
				if (nv != "HAVE_GCC" && nv != "HAVE_GDB" && ENVIRON[nv] != "no" && nv != "COMPATARCHDIRS" && nv != "KMODARCHDIRS") {
					wanted[kw] = 1 
				}
			}

			if ("compat" in wanted) {
				doingcompat = 1;
				split("'"${COMPATARCHDIRS}"'", compatarchdirs, ",");
				compatdirkeywords["compatdir"] = 1
				compatfilekeywords["compatfile"] = 1

				if (wanted["compattests"]) {
					doingcompattests = 1;
					compatdirkeywords["compattestdir"] = 1
					compatfilekeywords["compattestfile"] = 1
				}
				if (wanted["compatx11"]) {
					doingcompatx11 = 1;
					compatdirkeywords["compatx11dir"] = 1
					compatfilekeywords["compatx11file"] = 1
				}
			}

			if (("kmod" in wanted) && ("compatmodules" in wanted)) {
				split("'"${KMODARCHDIRS}"'", kmodarchdirs, ",");
				kmodpat = "./stand/" ENVIRON["MACHINE"]
				l_kmodpat = length(kmodpat)
			}

			if ("'"${TOOLCHAIN_MISSING}"'" != "yes") {
				if ("binutils" in wanted)
					wanted["binutils=" "'"${HAVE_BINUTILS}"'"] = 1
				if ("gcc" in wanted)
					wanted["gcc=" "'"${HAVE_GCC}"'"] = 1
				if ("gdb" in wanted)
					wanted["gdb=" "'"${HAVE_GDB}"'"] = 1
			}
			if ("xorg_server_ver" in wanted) {
				wanted["xorg_server_ver=" "'"${HAVE_XORG_SERVER_VER}"'"] = 1
			}
			if (("man" in wanted) && ("catpages" in wanted))
				wanted[".cat"] = 1
			if (("man" in wanted) && ("manpages" in wanted))
				wanted[".man"] = 1
			if ("endian" in wanted)
				wanted["endian=" "'"${TARGET_ENDIANNESS}"'"] = 1
			if ("machine" in wanted)
				wanted["machine=" "'"${MACHINE}"'"] = 1
			if ("machine_arch" in wanted)
				wanted["machine_arch=" "'"${MACHINE_ARCH}"'"] = 1
			if ("machine_cpu" in wanted)
				wanted["machine_cpu=" "'"${MACHINE_CPU}"'"] = 1
		}

		/^#/ {
			next;
		}

		/^-/ {
			notwanted[substr($1, 2)] = 1;
			delete list [substr($1, 2)];
			next;
		}
				

		NF > 2 && $3 != "-" {
			if (notwanted[$1] != "")
				next;
			split($3, keywords, ",")
			show = 1
			haveobs = 0
			iscompatfile = 0
			havekmod = 0
			iscompatdir = 0
			for (ki in keywords) {
				kw = keywords[ki]
				if (("manz" in wanted) &&
				    (kw == ".cat" || kw == ".man"))
					$1 = $1 ".gz"
				if (substr(kw, 1, 1) == "!") {
					kw = substr(kw, 2)
					if (kw in wanted)
						show = 0
				} else if (kw in compatdirkeywords) {
					iscompatdir = 1
				} else if (kw in compatfilekeywords) {
					iscompatfile = 1
				} else if (kw == "nocompatmodules") {
					havekmod = -1
				} else if (kw in ignoredkeywords) {
					# ignore
				} else if (! (kw in wanted)) {
					show = 0
				} else if (kw == "kmod" && havekmod == 0) {
					havekmod = 1
				}
				if (kw == "obsolete")
					haveobs = 1
			}
			if (obsolete && ! haveobs)
				next
			if (!show)
				next

			list[$1] = $0
			if (havekmod > 0 && substr($1,1,l_kmodpat) == kmodpat) {
				for (d in kmodarchdirs) {
					xd = "./stand/" kmodarchdirs[d]
					xfile = xd substr($1, l_kmodpat+1)
					tmp = xd substr($0, l_kmodpat+1)
					list[xfile] = tmp;
				}
				next
			}

			if (!doingcompat || !(iscompatfile || iscompatdir))
				next

			if (iscompatfile) {
				emitcompat[$1] = 1;
				next
			}
			for (d in cpaths) {
				if (cpaths[d] == $1 "/")
					next
			}
			cpaths[ncpaths++] = $1 "/"
			for (d in compatarchdirs) {
				tmp = $0
				xfile = $1 "/" compatarchdirs[d]
				tmp = xfile substr(tmp, length($1) + 1)
				if (xfile in notwanted)
					continue;
				sub("compatdir","compat",tmp);
				sub("compattestdir","compat",tmp);
				list[xfile] = tmp
			}
			next
		}

		{
			if ($1 in notwanted)
				next;
			if (! obsolete)
				list[$1] = $0
		}

		END {
			for (i in list) {
				print list[i]
				if (! (i in emitcompat))
					continue;
				l_i = length(i)
				l = 0
				for (j in cpaths) {
					lx = length(cpaths[j])
					if (lx >= l_i || cpaths[j] != substr(i, 1, lx)) {
						continue;
					}
					if (lx > l) {
						l = lx;
						cpath = cpaths[j];
					}
				}
				for (d in compatarchdirs) {
					tmp = list[i]
					extrapath = compatarchdirs[d] "/"
					xfile = cpath extrapath substr(i, l + 1)
					if (xfile in notwanted)
						continue;
					sub("compatfile","compat",tmp);
					sub("compattestfile","compat",tmp);
					tmp = xfile substr(tmp, l_i + 1)
					print tmp;
				}
			}
		}'

}

#
# list_set_lists setname
# 
# Print to stdout a list of files, one filename per line, which
# concatenate to create the packing list for setname. E.g.,
#
# 	.../lists/base/mi
# 	.../lists/base/rescue.mi
# 	.../lists/base/md.i386
#		[...]
#
# For a given setname $set, the following files may be selected from
# .../list/$set:
#	mi
#	mi.ext.*
#	ad.${MACHINE_ARCH}
# (or)	ad.${MACHINE_CPU}
#	ad.${MACHINE_CPU}.shl
#	md.${MACHINE}.${MACHINE_ARCH}
# (or)	md.${MACHINE}
#	stl.mi
#	stl.${stlib}
#	shl.mi
#	shl.mi.ext.*
#	shl.${shlib}
#	shl.${shlib}.ext.*
#	module.mi			if ${module} != no
#	module.${MACHINE}		if ${module} != no
#	module.ad.${MACHINE_ARCH}	if ${module} != no
# (or)	module.ad.${MACHINE_CPU}	if ${module} != no
#	rescue.shl
#	rescue.${MACHINE}
#	rescue.ad.${MACHINE_ARCH}
# (or)	rescue.ad.${MACHINE_CPU}
# 	rescue.ad.${MACHINE_CPU}.shl
#
# Environment:
# 	shlib
# 	stlib
#
list_set_lists()
{
	setname=$1

	list_set_lists_mi $setname
	list_set_lists_ad $setname
	list_set_lists_md $setname
	list_set_lists_stl $setname
	list_set_lists_shl $setname
	list_set_lists_module $setname
	list_set_lists_rescue $setname
	return 0
}

list_set_lists_mi()
{
	setdir=$setsdir/lists/$1
	# always exist!
	echo $setdir/mi
}

list_set_lists_ad()
{
	setdir=$setsdir/lists/$1
	[ "${MACHINE}" != "${MACHINE_ARCH}" ] && \
	list_set_lists_common_ad $1
}

list_set_lists_md()
{
	setdir=$setsdir/lists/$1
	echo_if_exist $setdir/md.${MACHINE}.${MACHINE_ARCH} || \
	echo_if_exist $setdir/md.${MACHINE}
}

list_set_lists_stl()
{
	setdir=$setsdir/lists/$1
	echo_if_exist $setdir/stl.mi
	echo_if_exist $setdir/stl.${stlib}
}

list_set_lists_shl()
{
	setdir=$setsdir/lists/$1
	[ "$shlib" != "no" ] || return
	echo_if_exist $setdir/shl.mi
	echo_if_exist $setdir/shl.${shlib}
}

list_set_lists_module()
{
	setdir=$setsdir/lists/$1
	[ "$module" != "no" ] || return
	echo_if_exist $setdir/module.mi
	echo_if_exist $setdir/module.${MACHINE}
	# XXX module never has .shl
	[ "${MACHINE}" != "${MACHINE_ARCH}" ] && \
	list_set_lists_common_ad $1 module
}

list_set_lists_rescue()
{
	setdir=$setsdir/lists/$1
	echo_if_exist $setdir/rescue.mi
	echo_if_exist $setdir/rescue.${MACHINE}
	[ "${MACHINE}" != "${MACHINE_ARCH}" ] && \
	list_set_lists_common_ad $1 rescue
}

list_set_lists_common_ad()
{
	setdir=$setsdir/lists/$1; _prefix=$2

	[ -n "$_prefix" ] && prefix="$_prefix".

	# Prefer a <prefix>.ad.${MACHINE_ARCH} over a
	# <prefix>.ad.${MACHINE_CPU}, since the arch-
	# specific one will be more specific than the
	# cpu-specific one.
	echo_if_exist $setdir/${prefix}ad.${MACHINE_ARCH} || \
	echo_if_exist $setdir/${prefix}ad.${MACHINE_CPU}
	[ "$shlib" != "no" ] && \
	echo_if_exist $setdir/${prefix}ad.${MACHINE_CPU}.shl
}

echo_if_exist()
{
	[ -f $1 ] && echo $1
	return $?
}

echo_if_exist_foreach()
{
	local _list=$1; shift
	for _suffix in $@; do
		echo_if_exist ${_list}.${_suffix}
	done
}

print_set_lists()
{
	for setname; do
		list=$(list_set_lists $setname)
		for l in $list; do
			echo $l
			if $verbose; then
				echo >&2 "DEBUG: list_set_files: $l"
			fi
		done
	done | ${XARGS} ${SED} ${SUBST}
}

# arch_to_cpu mach
#
# Print the ${MACHINE_CPU} for ${MACHINE_ARCH}=mach,
# as determined by <bsd.own.mk>.
#
arch_to_cpu()
{
	MAKEVERBOSE= MACHINE_ARCH=${1} ${MAKE} -B -f- all <<EOMAKE
.include <bsd.own.mk>
all:
	@echo \${MACHINE_CPU}
EOMAKE
}

# arch_to_endian mach
#
# Print the ${TARGET_ENDIANNESS} for ${MACHINE_ARCH}=mach,
# as determined by <bsd.endian.mk>.
#
arch_to_endian()
{
	MAKEVERBOSE= MACHINE_ARCH=${1} ${MAKE} -B -f- all <<EOMAKE
.include <bsd.endian.mk>
all:
	@echo \${TARGET_ENDIANNESS}
EOMAKE
}

#####

# print_mkvars
print_mkvars()
{
	for v in $MKVARS; do
		eval echo $v=\$$v
	done
}

# print_set_lists_{base,x,ext}
# list_set_lists_{base,x,ext}
# list_set_files_{base,x,ext}
for func in print_set_lists list_set_lists list_set_files; do
	for x in base x ext; do
		if [ $x = base ]; then
			list=nlists
		else
			list=${x}lists
		fi
		eval ${func}_${x} \(\) \{ $func \$$list \; \}
	done
done