dhcpcd/configure

#!/bin/sh
# Try and be like autotools configure, but without autotools

# Ensure that we do not inherit these from env
HOOKSET=false
INET=
INET6=
ARC4RANDOM=
CLOSEFROM=
GETLINE=
STRLCPY=
UDEV=
OS=
BUILD=
HOST=
TARGET=
DEBUG=
FORK=
STATIC=
INCLUDEDIR=
DEVS=
EMBEDDED=

for x do
	opt=${x%%=*}
	var=${x#*=}
	case "$opt" in
	--os|OS) OS=$var;;
	--debug) DEBUG=$var;;
	--disable-debug) DEBUG=no;;
	--enable-debug) DEBUG=yes;;
	--fork) FORK=$var;;
	--disable-fork) FORK=no;;
	--enable-fork) FORK=yes;;
	--disable-static) STATIC=no;;
	--enable-static) STATIC=yes;;
	--disable-ipv4) INET=no;;
	--enable-ipv4) INET=yes;;
	--disable-ipv6) INET6=no;;
	--enable-ipv6) INET6=yes;;
	--disable-embedded) EMBEDDED=no;;
	--enable-embedded) EMBEDDED=no;;
	--prefix) PREFIX=$var;;
	--sysconfdir) SYSCONFDIR=$var;;
	--bindir|--sbindir) SBINDIR=$var;;
	--libexecdir) LIBEXECDIR=$var;;
	--statedir|--localstatedir) STATEDIR=$var;;
	--dbdir) DBDIR=$var;;
	--rundir) RUNDIR=$var;;
	--mandir) MANDIR=$var;;
	--with-ccopts|CFLAGS) CFLAGS=$var;;
	CPPFLAGS) CPPFLAGS=$var;;
	--with-hook) HOOKSCRIPTS="$HOOKSCRIPTS${HOOKSCRIPTS:+ }$var";;
	--with-hooks|HOOKSCRIPTS) HOOKSCRIPTS=$var; HOOKSET=true;;
	--build) BUILD=$var;;
	--host) HOST=$var;;
	--target) TARGET=$var;;
	--libdir) LIBDIR=$var;;
	--without-arc4random) ARC4RANDOM=no;;
	--without-closefrom) CLOSEFROM=no;;
	--without-getline) GETLINE=no;;
	--without-strlcpy) STRLCPY=no;;
        --without-posix_spawn) POSIX_SPAWN=no;;
	--without-pollts) POLLTS=no;;
	--with-pollts) POLLTS=$var;;
	--without-md5) MD5=no;;
	--without-dev) DEV=no;;
	--without-udev) UDEV=no;;
	--serviceexists) SERVICEEXISTS=$var;;
	--servicecmd) SERVICECMD=$var;;
	--servicestatus) SERVICESTATUS=$var;;
	--includedir) eval INCLUDEDIR="$INCLUDEDIR${INCLUDEDIR:+ }$var";;
	--datadir|--infodir) ;; # ignore autotools
	--disable-maintainer-mode|--disable-dependency-tracking) ;;
	-V|--version)
		v=$(sed -ne 's/.*VERSION[[:space:]]*"\([^"]*\).*/\1/p' defs.h);
		c=$(sed -ne 's/^.*copyright\[\] = "\([^"]*\).*/\1/p' dhcpcd.c);
		echo "dhcpcd-$v $c";
		exit 0;;
	-h|--help) cat <<EOF
\`configure' configures this package to adapt to many kinds of systems.

Usage: configure [OPTION]... [VAR=VALUE]...

To assign environment variables (e.g., CC, CFLAGS...), specify them as
VAR=VALUE.  See below for descriptions of some of the useful variables.

Defaults for the options are specified in brackets.

Configuration:
  -h, --help              display this help and exit
      --help=short        display options specific to this package
  -V, --version           display version information and exit

Installation directories:
  --prefix=PREFIX         install architecture-independent files in PREFIX [/]

By default, \`make install' will install all the files in \'/sbin',
\`/libexec', etc. You can specify
an installation prefix other than \`/' using \`--prefix',
for instance \`--prefix=$HOME'.

For better control, use the options below.

Fine tuning of the installation directories:
  --bindir=DIR            user executables [PREFIX/bin]
  --sbindir=DIR           system admin executables [PREFIX/sbin]
  --libexecdir=DIR        program executables [PREFIX/libexec]
  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
  --libdir=DIR            object code libraries [PREFIX/lib]
  --includedir=DIR        C header files [PREFIX/include]
  --mandir=DIR            man documentation [PREFIX/man]

System types:
  --build=BUILD           configure for building on BUILD [guessed]
  --host=HOST       build programs to run on HOST [BUILD]
  --target=TARGET   configure for building compilers for TARGET [HOST]

Optional Features:
  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]

Some influential environment variables:
  CC          C compiler command
  CFLAGS      C compiler flags
  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
              nonstandard directory <lib dir>
  CPPFLAGS    C/C++ preprocessor flags, e.g. -I<include dir> if you have
              headers in a nonstandard directory <include dir>
  CPP         C preprocessor

Use these variables to override the choices made by \`configure' or to help
it to find libraries and programs with nonstandard names/locations.
EOF
exit 0
;;
	*) echo "$0: WARNING: unknown option $opt" >&2;;
	esac
done

: ${SED:=sed}
: ${GREP:=grep}
: ${WC:=wc}

: ${FORK:=yes}
: ${SYSCONFDIR:=$PREFIX/etc}
: ${SBINDIR:=$PREFIX/sbin}
: ${LIBDIR:=$PREFIX/lib}
: ${LIBEXECDIR:=$PREFIX/libexec}
: ${STATEDIR:=/var}
: ${DBDIR:=$STATEDIR/db}
: ${RUNDIR:=$STATEDIR/run}
: ${MANDIR:=${PREFIX:-/usr}/share/man}

eval SYSCONFDIR="$SYSCONFDIR"
eval LIBDIR="$LIBDIR"
eval LIBEXECDIR="$LIBEXECDIR"
eval STATEDIR="$STATEDIR"
eval DBDIR="$DBDIR"
eval RUNDIR="$RUNDIR"
eval MANDIR="$MANDIR"

_which()
{
	x="$(which "$1" 2>/dev/null)"
	if [ -n "$x" ]; then
		echo "$x"
		return 0
	fi
	for x in /sbin/"$1" /usr/sbin/"$1" \
		/usr/pkg/sbin/"$1" /usr/local/sbin/"$1"
	do
		if [ -e "$x" ]; then
			echo "$x"
			return 0
		fi
	done
	return 1
}

CONFIG_H=config.h
CONFIG_MK=config.mk

if [ -z "$BUILD" ]; then
	# autoconf target triplet: cpu-vendor-os
	BUILD=$(uname -m)-unknown-$(uname -s | tr '[:upper:]' '[:lower:]')
fi
if [ -z "$HOST" ]; then
	[ -z "$TARGET" ] && TARGET=$BUILD
	HOST=$TARGET
fi
if [ -z "$TARGET" ]; then
	[ -z "$HOST" ] && HOST=$BUILD
	TARGET=$HOST
fi

if [ -z "$OS" ]; then
	echo "Deriving operating system from ... $TARGET"
	# Derive OS from cpu-vendor-[kernel-]os
	CPU=${TARGET%%-*}
	REST=${TARGET#*-}
	if [ "$CPU" != "$REST" ]; then
		VENDOR=${REST%%-*}
		REST=${REST#*-}
		if [ "$VENDOR" != "$REST" ]; then
			# Use kernel if given, otherwise os
			OS=${REST%%-*}
		else
			# 2 tupple
			OS=$VENDOR
			VENDOR=
		fi
	fi

        # Work with cpu-kernel-os, ie Debian
	case "$VENDOR" in
	linux|kfreebsd) OS=$VENDOR; VENDOR= ;;
	esac
	# Special case
	case "$OS" in
	gnu) OS=hurd;; # No HURD support as yet
	esac
fi

echo "Configuring dhcpcd for ... $OS"
rm -f $CONFIG_H $CONFIG_MK
echo "# $OS" >$CONFIG_MK
echo "/* $OS */" >$CONFIG_H

for x in SYSCONFDIR SBINDIR LIBDIR LIBEXECDIR DBDIR RUNDIR; do
	eval v=\$$x
	# Make files look nice for import
	l=$((10 - ${#x}))
	unset t
	[ $l -gt 3 ] && t="	"
	echo "$x=$t	$v" >>$CONFIG_MK
	unset t
	[ $l -gt 2 ] && t="	"
	echo "#define $x$t	\"$v\"" >>$CONFIG_H
done
echo "LIBDIR=		$LIBDIR" >>$CONFIG_MK
echo "MANDIR=		$MANDIR" >>$CONFIG_MK

: ${CC:=cc}
echo "Using compiler .. $(which $CC)"
$CC --version | $SED -e '1!d'

# Set to blank, then append user config
# We do this so our SED call to append to XCC remains portable
if [ -n "$CFLAGS" ]; then
	echo "CFLAGS=" >>$CONFIG_MK
	echo "CFLAGS+=	$CFLAGS" >>$CONFIG_MK
fi
if [ -n "$CPPFLAGS" ]; then
	echo "CPPFLAGS=" >>$CONFIG_MK
	echo "CPPFLAGS+=	$CPPFLAGS" >>$CONFIG_MK
fi
if [ -n "$LDFLAGS" ]; then
	echo "LDFLAGS=" >>$CONFIG_MK
	echo "LDFLAGS+=	$LDFLAGS" >>$CONFIG_MK
fi

if [ "$STATIC" = yes ]; then
	echo "LDFLAGS+=	-static" >>$CONFIG_MK
fi
for x in $INCLUDEDIR; do
	echo "CPPFLAGS+=	-I$x" >>$CONFIG_MK
done

if [ -z "$DEBUG" -a -f .fslckout ]; then
	printf "Found fossil checkout ... "
	DEBUG=yes
else
	DEBUG=no
fi
if [ "$DEBUG" != no -a "$DEBUG" != false ]; then
	echo "Adding debugging CFLAGS"
	cat <<EOF >>$CONFIG_MK
CFLAGS+=	-g -Wall -Wextra -Wshadow -Wformat=2
CFLAGS+=	-Wmissing-prototypes -Wmissing-declarations
CFLAGS+=	-Wmissing-noreturn -Wmissing-format-attribute
CFLAGS+=	-Wnested-externs
CFLAGS+=	-Winline -Wwrite-strings -Wcast-align -Wcast-qual
CFLAGS+=	-Wpointer-arith -Wstrict-overflow
CFLAGS+=	-Wdeclaration-after-statement
EOF
	case "$OS" in
	openbsd)	;; # OpenBSD has many redundant decs in system headers
	*)		echo "CFLAGS+=	-Wredundant-decls" >>$CONFIG_MK;;
	esac
fi

if [ -z "$EMBEDDED" -o "$EMBEDDED" = yes ]; then
	echo "dhcpcd-definitions.conf will be embedded in dhcpcd itself"
	echo "DHCPCD_SRCS+=	dhcpcd-embedded.c" >>$CONFIG_MK
else
	echo "dhcpcd-definitions.conf will be installed to $LIBEXECDIR"
	echo "CFLAGS+= -DEMBEDDED_CONFIG=\\\"$LIBEXECDIR/dhcpcd-definitions.conf\\\"" >>$CONFIG_MK
	echo "EMBEDDEDINSTALL=	_embeddedinstall" >>$CONFIG_MK
fi

if [ -n "$FORK" -a "$FORK" != yes -a "$FORK" != true ]; then
	echo "There is no fork"
	echo "CPPFLAGS+=	-DTHERE_IS_NO_FORK" >>$CONFIG_MK
fi

case "$OS" in
linux)
	echo "CPPFLAGS+=	-D_BSD_SOURCE -D_XOPEN_SOURCE=700" >>$CONFIG_MK
	if [ -z "$INET" -o "$INET" = yes ]; then
		echo "DHCPCD_SRCS+=	lpf.c" >>$CONFIG_MK
	fi
	echo "DHCPCD_SRCS+=	if-linux.c if-linux-wireless.c" >>$CONFIG_MK
	echo "DHCPCD_SRCS+=	platform-linux.c" >>$CONFIG_MK
	echo "LDADD+=		-lrt -ldl" >>$CONFIG_MK
	;;
kfreebsd)
	echo "CPPFLAGS+=	-D_GNU_SOURCE" >>$CONFIG_MK
	if [ -z "$INET" -o "$INET" = yes ]; then
		echo "DHCPCD_SRCS+=	bpf.c" >>$CONFIG_MK
	fi
	echo "DHCPCD_SRCS+=	if-bsd.c platform-bsd.c" >>$CONFIG_MK
	echo "COMPAT_SRCS+=	compat/linkaddr.c" >>$CONFIG_MK
	echo "LDADD+=		-lrt -ldl" >>$CONFIG_MK
	;;
*)
	if [ -z "$INET" -o "$INET" = yes ]; then
		echo "DHCPCD_SRCS+=	bpf.c" >>$CONFIG_MK
	fi
	echo "DHCPCD_SRCS+=	if-bsd.c platform-bsd.c" >>$CONFIG_MK
	;;
esac

if [ -z "$INET" -o "$INET" = yes ]; then
	echo "CPPFLAGS+=	-DINET" >>$CONFIG_MK
	echo "DHCPCD_SRCS+=	arp.c dhcp.c ipv4.c ipv4ll.c" >>$CONFIG_MK
fi
if [ -z "$INET6" -o "$INET6" = yes ]; then
	echo "CPPFLAGS+=	-DINET6" >>$CONFIG_MK
	echo "DHCPCD_SRCS+=	ipv6.c ipv6nd.c dhcp6.c" >>$CONFIG_MK
fi

# NetBSD: Even if we build for $PREFIX, the clueless user might move us to /
LDELF=/libexec/ld.elf_so
if [ -e "$LDELF" ]; then
	echo "Linking against $LDELF"
	echo "LDFLAGS+=	-Wl,-dynamic-linker=$LDELF" >>$CONFIG_MK
	echo "LDFLAGS+=	-Wl,-rpath=${LIBDIR}" >>$CONFIG_MK
fi

# Add CPPFLAGS and CFLAGS to CC for testing features
XCC="$CC `$SED -n -e 's/CPPFLAGS+=*\(.*\)/\1/p' $CONFIG_MK`"
XCC="$XCC `$SED -n -e 's/CFLAGS+=*\(.*\)/\1/p' $CONFIG_MK`"

abort=false
# We require the libc to support non standard functions, like getifaddrs
printf "Testing for getifaddrs ... "
cat <<EOF >_getifaddrs.c
#include <sys/types.h>
#include <ifaddrs.h>
int main(void) {
	struct ifaddrs *ifap;
	return getifaddrs(&ifap);
}
EOF
if $XCC _getifaddrs.c -o _getifaddrs 2>/dev/null; then
	echo "yes"
else
	echo "no"
	echo "libc support for getifaddrs is required - aborting" >&2
	abort=true
fi
rm -f _getifaddrs.c _getifaddrs
$abort && exit 1

if [ -z "$ARC4RANDOM" ]; then
	printf "Testing for arc4random ... "
	cat <<EOF >_arc4random.c
#include <stdlib.h>
int main(void) {
	arc4random();
	return 0;
}
EOF
	if $XCC _arc4random.c -o _arc4random 2>/dev/null; then
		ARC4RANDOM=yes
	else
		ARC4RANDOM=no
	fi
	echo "$ARC4RANDOM"
	rm -f _arc4random.c _arc4random
fi
if [ "$ARC4RANDOM" = no ]; then
	echo "COMPAT_SRCS+=	compat/arc4random.c" >>$CONFIG_MK
	echo "#include \"compat/arc4random.h\"" >>$CONFIG_H
fi

if [ -z "$CLOSEFROM" ]; then
	printf "Testing for closefrom ... "
	cat <<EOF >_closefrom.c
#include <unistd.h>
int main(void) {
	closefrom(3);
	return 0;
}
EOF
	if $XCC _closefrom.c -o _closefrom 2>/dev/null; then
		CLOSEFROM=yes
	else
		CLOSEFROM=no
	fi
	echo "$CLOSEFROM"
	rm -f _closefrom.c _closefrom
fi
if [ "$CLOSEFROM" = no ]; then
	echo "COMPAT_SRCS+=	compat/closefrom.c" >>$CONFIG_MK
	echo "#include \"compat/closefrom.h\"" >>$CONFIG_H
fi

if [ -z "$GETLINE" ]; then
	printf "Testing for getline ... "
	cat <<EOF >_getline.c
#define _GNU_SOURCE
#include <stdio.h>
int main(void) {
	char *buf = NULL;
	size_t n = 0;
	getline(&buf, &n, stdin);
	return 0;
}
EOF
	if $XCC _getline.c -o _getline 2>/dev/null; then
		GETLINE=yes
	else
		GETLINE=no
	fi
	echo "$GETLINE"
	rm -f _getline.c _getline
fi
if [ "$GETLINE" = no ]; then
	echo "COMPAT_SRCS+=	compat/getline.c" >>$CONFIG_MK
	echo "#include \"compat/getline.h\"" >>$CONFIG_H
fi

if [ -z "$STRLCPY" ]; then
	printf "Testing for strlcpy ... "
	cat <<EOF >_strlcpy.c
#include <string.h>
int main(void) {
	const char s1[] = "foo";
	char s2[10];
	strlcpy(s2, s1, sizeof(s2));
	return 0;
}
EOF
	if $XCC _strlcpy.c -o _strlcpy 2>/dev/null; then
		STRLCPY=yes
	else
		STRLCPY=no
	fi
	echo "$STRLCPY"
	rm -f _strlcpy.c _strlcpy
fi
if [ "$STRLCPY" = no ]; then
	echo "COMPAT_SRCS+=	compat/strlcpy.c" >>$CONFIG_MK
	echo "#include \"compat/strlcpy.h\"" >>$CONFIG_H
fi

if [ -z "$TAILQ_FOREACH_SAFE" ]; then
	printf "Testing for TAILQ_FOREACH_SAFE ... "
	cat <<EOF >_queue.c
#include <sys/queue.h>
int main(void) {
#ifndef TAILQ_FOREACH_SAFE
#error TAILQ_FOREACH_SAFE
#endif
	return 0;
}
EOF
	if $XCC _queue.c -o _queue 2>/dev/null; then
		TAILQ_FOREACH_SAFE=yes
	else
		TAILQ_FOREACH_SAFE=no
	fi
	echo "$TAILQ_FOREACH_SAFE"
	rm -f _queue.c _queue
fi
if [ "$TAILQ_FOREACH_SAFE" = no ]; then
	cat <<EOF >>$CONFIG_H
#define	TAILQ_FOREACH_SAFE(var, head, field, next)			\\
	for ((var) = TAILQ_FIRST((head));				\\
	    (var) && ((next) = TAILQ_NEXT((var), field), 1);		\\
	    (var) = (next))
#define TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, prev)	\\
	for ((var) = TAILQ_LAST((head), headname);			\\
	    (var) && ((prev) = TAILQ_PREV((var), headname, field), 1);  \\
	    (var) = (prev))
EOF
fi

if [ -z "$TAILQ_CONCAT" ]; then
	printf "Testing for TAILQ_CONCAT ..."
	cat <<EOF >_queue.c
#include <sys/queue.h>
int main(void) {
#ifndef TAILQ_CONCAT
#error TAILQ_CONCAT
#endif
	return 0;
}
EOF
	if $XCC _queue.c -o _queue 2>/dev/null; then
		TAILQ_CONCAT=yes
	else
		TAILQ_CONCAT=no
	fi
	echo "$TAILQ_CONCAT"
	rm -f _queue.c _queue
fi
if [ "$TAILQ_CONCAT" = no ]; then
	cat <<EOF >>$CONFIG_H
#define TAILQ_CONCAT(head1, head2, field) do {				\\
	if (!TAILQ_EMPTY(head2)) {					\\
		*(head1)->tqh_last = (head2)->tqh_first;		\\
		(head2)->tqh_first->field.tqe_prev = (head1)->tqh_last;	\\
		(head1)->tqh_last = (head2)->tqh_last;			\\
		TAILQ_INIT((head2));					\\
	}								\\
} while (/*CONSTCOND*/0)
EOF
fi

if [ -z "$POSIX_SPAWN" ]; then
	printf "Testing for posix_spawn ... "
	cat <<EOF >_posix_spawn.c
#include <spawn.h>
#include <stdlib.h>
int main(void) {
	posix_spawn(NULL, NULL, NULL, NULL, NULL, NULL);
	return 0;
}
EOF
	if $XCC _posix_spawn.c -o _posix_spawn 2>/dev/null; then
		case "$OS" in
		openbsd) printf "broken OpenBSD ... "; POSIX_SPAWN=no;;
		*) POSIX_SPAWN=yes;;
		esac
	else
		POSIX_SPAWN=no
	fi
	echo "$POSIX_SPAWN"
	rm -f _posix_spawn.c _posix_spawn
fi
if [ "$POSIX_SPAWN" = no ]; then
	echo "COMPAT_SRCS+=	compat/posix_spawn.c" >>$CONFIG_MK
	echo "#include \"compat/posix_spawn.h\"" >>$CONFIG_H
else
	echo "#include <spawn.h>" >>$CONFIG_H
fi

if [ -z "$POLLTS" ]; then
	printf "Testing for pollts ... "
	cat <<EOF >_pollts.c
#include <poll.h>
#include <signal.h>
#include <stdlib.h>
#include <time.h>
int main(void) {
	pollts(NULL, 0, NULL, NULL);
	return 0;
}
EOF
	if $XCC _pollts.c -o _pollts 2>/dev/null; then
		POLLTS=yes
	else
		POLLTS=no
	fi
	echo "$POLLTS"
	rm -f _pollts.c _pollts
fi
if [ "$POLLTS" = no ]; then
	printf "Testing for ppoll ... "
	cat <<EOF >_ppoll.c
#include <poll.h>
#include <stdlib.h>
int main(void) {
	ppoll(NULL, 0, NULL, NULL);
	return 0;
}
EOF
	if $XCC _ppoll.c -o _ppoll 2>/dev/null; then
		POLLTS=ppoll
		echo "yes"
	else
		POLLTS=no
		echo "no"
	fi
	rm -f _ppoll.c _ppoll
fi
if [ "$POLLTS" = no ]; then
	printf "Testing for pselect ... "
	cat <<EOF >_pselect.c
#include <sys/select.h>
#include <stdlib.h>
int main(void) {
	pselect(0, NULL, NULL, NULL, NULL, NULL);
	return 0;
}
EOF
	if $XCC _pselect.c -o _pselect 2>/dev/null; then
		POLLTS=pselect
		echo "yes"
	else
		POLLTS=no
		echo "no"
	fi
	rm -f _pselect.c _pselect
fi
case "$POLLTS" in
yes)
	;;
ppoll)
	echo "#define pollts ppoll" >>$CONFIG_H
	;;
pselect)
	echo "COMPAT_SRCS+=	compat/pselect.c" >>$CONFIG_MK
	echo "#include \"compat/pollts.h\"" >>$CONFIG_H
	;;
*)
	echo "COMPAT_SRCS+=	compat/pollts.c" >>$CONFIG_MK
	echo "#include \"compat/pollts.h\"" >>$CONFIG_H
	;;
esac

if [ -z "$MD5" ]; then
	MD5_LIB=
	printf "Testing for MD5Init ... "
	cat <<EOF >_md5.c
#include <sys/types.h>
#include <md5.h>
#include <stdlib.h>
int main(void) {
	MD5_CTX context;
	MD5Init(&context);
	return 0;
}
EOF
	# We only want to link to libmd if it exists in /lib
	set -- $(ls /lib/libmd.so.* 2>/dev/null)
	if $XCC _md5.c -o _md5 2>/dev/null; then
		MD5=yes
	elif [ -e "$1" ] && $XCC _md5.c -lmd -o _md5 2>/dev/null; then
		MD5="yes (-lmd)"
		MD5_LIB=-lmd
	else
		MD5=no
	fi
	echo "$MD5"
	rm -f _md5.c _md5
fi
if [ "$MD5" = no ]; then
	echo "MD5_SRC=	md5.c" >>$CONFIG_MK
else
	echo "MD5_SRC=" >>$CONFIG_MK
	echo "CPPFLAGS+=	-DHAVE_MD5_H" >>$CONFIG_MK
	[ -n "$MD5_LIB" ] && echo "LDADD+=		$MD5_LIB" >>$CONFIG_MK
fi

if [ "$DEV" != no -a "$UDEV" != no ]; then
	printf "Checking for libudev ... "
	LIBUDEV_CFLAGS=$(pkg-config --cflags libudev 2>/dev/null)
	LIBUDEV_LIBS=$(pkg-config --libs libudev 2>/dev/null)
fi
if [ "$DEV" != no -a "$UDEV" != no -a -n "$LIBUDEV_LIBS" ]; then
	echo "yes"
	[ -z "$DEV" ] && DEV=yes
	echo "DEV_PLUGINS+=	udev" >>$CONFIG_MK
	if [ -n "$LIBUDEV_CFLAGS" ]; then
		echo "LIBUDEV_CFLAGS=		$LIBUDEV_CFLAGS" >>$CONFIG_MK
	fi
	echo "LIBUDEV_LIBS=	$LIBUDEV_LIBS" >>$CONFIG_MK

	printf "Checking udev_monitor_filter_add_match_subsystem_devtype ... "
	cat <<EOF >_udev.c
#include <libudev.h>
#include <stdlib.h>
int main(void) {
	udev_monitor_filter_add_match_subsystem_devtype(NULL, NULL, NULL);
	return 0;
}
EOF
	if $XCC $LIBUDEV_CFLAGS _udev.c -o _udev $LIBUDEV_LIBS 2>/dev/null
	then
		echo "yes"
	else
		echo "LIBUDEV_CPPFLAGS+=	-DLIBUDEV_NOFILTER" >>$CONFIG_MK
		echo "no"
	fi
	rm -f _udev.c _udev

	printf "Checking udev_device_get_is_initialized ... "
	cat <<EOF >_udev.c
#include <libudev.h>
#include <stdlib.h>
int main(void) {
	udev_device_get_is_initialized(NULL);
	return 0;
}
EOF
	if $XCC $LIBUDEV_CFLAGS _udev.c -o _udev $LIBUDEV_LIBS 2>/dev/null
	then
		echo "yes"
	else
		echo "LIBUDEV_CPPFLAGS+=	-DLIBUDEV_NOINIT" >>$CONFIG_MK
		echo "no"
	fi
	rm -f _udev.c _udev
elif [ "$DEV" != no -a "$UDEV" != no ]; then
	echo "no"
fi

if [ "$DEV" = yes ]; then
	echo "DHCPCD_SRCS+=	dev.c" >>$CONFIG_MK
	echo "CPPFLAGS+=	-DPLUGIN_DEV" >>$CONFIG_MK
	echo "MKDIRS+=	dev" >>$CONFIG_MK
fi

# Transform for a make file
SERVICEEXISTS=$(echo "$SERVICEEXISTS" | $SED \
	-e 's:\\:\\\\:g' \
	-e 's:\&:\\\&:g' \
	-e 's:\$:\\\\\$\$:g' \
)
echo "SERVICEEXISTS=	$SERVICEEXISTS" >>config.mk
SERVICECMD=$(echo "$SERVICECMD" | $SED \
	-e 's:\\:\\\\:g' \
	-e 's:\&:\\\&:g' \
	-e 's:\$:\\\\\$\$:g' \
)
echo "SERVICECMD=	$SERVICECMD" >>config.mk
SERVICESTATUS=$(echo "$SERVICESTATUS" | $SED \
	-e 's:\\:\\\\:g' \
	-e 's:\&:\\\&:g' \
	-e 's:\$:\\\\\$\$:g' \
)
echo "SERVICESTATUS=	$SERVICESTATUS" >>config.mk

HOOKS=
if ! $HOOKSET; then
	printf "Checking for ntpd ... "
	NTPD=$(_which ntpd)
	if [ -n "$NTPD" ]; then
		echo "$NTPD (50-ntp.conf)"
		HOOKS="$HOOKS${HOOKS:+ }50-ntp.conf"
	else
		echo "not found"
	fi

	printf "Checking for ypind ... "
	YPBIND=$(_which ypbind)
	if [ -n "$YPBIND" ]; then
		if strings "$YPBIND" | $GREP -q yp.conf; then
			YPHOOK="50-yp.conf"
		else
			YPHOOK="50-ypbind"
		fi
		echo "$YPBIND ($YPHOOK)"
		HOOKS="$HOOKS${HOOKS:+ }$YPHOOK"
	else
		echo "not found"
	fi
fi

cd dhcpcd-hooks
for x in $HOOKSCRIPTS; do
	printf "Finding hook $x ... "
	for h in [0-9][0-9]"-$x" [0-9][0-9]"-$x.sh" [0-9][0-9]"-$x.conf"; do
		[ -e "$h" ] && break
	done
	if [ ! -e "$h" ]; then
		echo "no"
	else
		echo "$h"
		case " $HOOKS " in
		*" $h "*)	;;
		*)		HOOKS="$HOOKS${HOOKS:+ }$h";;
		esac
	fi
done
cd ..
echo "HOOKSCRIPTS=	$HOOKS" >>$CONFIG_MK

# Define any RCSIDs for import into 3rd party systems
case "$OS" in
netbsd)
	echo "IMPORT_RCSID=	\#include <sys/cdefs.h>\\n" >>$CONFIG_MK
	echo "IMPORT_RCSID+=	__RCSID(\\\"\\\$\$NetBSD: \\\$\$\\\");" >> \
	    $CONFIG_MK
	echo "IMPORT_HID+=	/* \\\$\$NetBSD: \\\$\$ */" >> \
	    $CONFIG_MK
	echo "IMPORT_MANID=	.\\\\\\\\\\\"     \\\$\$NetBSD: \$\$ " >> \
	    $CONFIG_MK
	echo "IMPORT_SHID=	\# \\\$\$NetBSD: \$\$ " >>$CONFIG_MK
	;;
esac

echo
echo "   SYSCONFDIR =		$SYSCONFDIR"
echo "   SBINDIR =		$SBINDIR"
echo "   LIBDIR =		$LIBDIR"
echo "   LIBEXECDIR =		$LIBEXECDIR"
echo "   DBDIR =		$DBDIR"
echo "   RUNDIR =		$RUNDIR"
echo "   MANDIR =		$MANDIR"
echo "   HOOKSCRIPTS =	$HOOKS"
echo

rm -f dhcpcd tests/test