#!/bin/sh
# Configuration script for the PCI library
# (c) 1998--2013 Martin Mares <mj@ucw.cz>

LC_ALL=C
export LC_ALL

echo_n() {
	if [ -n "$BASH" ]
	then
		echo -n "$*"
	else
		echo "$*\c"
	fi
}

if [ -z "$VERSION" -o -z "$IDSDIR" ] ; then
	echo >&2 "Please run the configure script from the top-level Makefile"
	exit 1
fi

echo_n "Configuring libpci for your system..."
if [ -z "$HOST" ] ; then
	sys=`uname -s`
	rel=`uname -r`
	realsys="$sys"
	if [ "$sys" = "AIX" -a -x /usr/bin/oslevel -a -x /usr/sbin/lsattr ]
	then
		rel=`/usr/bin/oslevel`
		proc=`/usr/sbin/lsdev -C -c processor -S available -F name | head -1`
		cpu=`/usr/sbin/lsattr -F value -l $proc -a type | sed 's/_.*//'`
	else
		cpu=`uname -m | sed 's/^i.86$/i386/;s/^sun4u$/sparc64/;s/^i86pc$/i386/;s/^BePC$/i386/;s/^BeMac$/powerpc/;s/^BeBox$/powerpc/'`
	fi
	if [ "$sys" = "GNU/kFreeBSD" -o "$sys" = "DragonFly" ]
	then
		sys=freebsd
	fi
	if [ "$sys" = "CYGWIN_NT-5.1" -o "$sys" = "CYGWIN_NT-6.0" ]
	then
		sys=cygwin
	fi
	HOST=${3:-$cpu-$sys}
fi
[ -n "$RELEASE" ] && rel="${RELEASE}"
# CAVEAT: tr on Solaris is a bit weird and the extra [] is otherwise harmless.
host=`echo $HOST | sed -e 's/^\([^-]*\)-\([^-]*\)-\([^-]*\)-\([^-]*\)$/\1-\3/' -e 's/^\([^-]*\)-\([^-]*\)$/\1--\2/' | tr '[A-Z]' '[a-z]'`
cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
sys=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
echo " $host $rel $cpu $sys"

c=config.h
m=config.mk
echo >$c '#define PCI_CONFIG_H'
echo >>$c "#define PCI_ARCH_`echo $cpu | tr '[a-z]' '[A-Z]'`"
echo >>$c "#define PCI_OS_`echo $sys | tr '[a-z]' '[A-Z]'`"
echo >$m 'WITH_LIBS='

echo_n "Looking for access methods..."
LIBRESOLV=-lresolv

case $sys in
	linux*)
		echo_n " sysfs proc"
		echo >>$c '#define PCI_HAVE_PM_LINUX_SYSFS'
		echo >>$c '#define PCI_HAVE_PM_LINUX_PROC'
		echo >>$c '#define PCI_HAVE_LINUX_BYTEORDER_H'
		echo >>$c '#define PCI_PATH_PROC_BUS_PCI "/proc/bus/pci"'
		echo >>$c '#define PCI_PATH_SYS_BUS_PCI "/sys/bus/pci"'
		case $cpu in
				i?86|x86_64)	echo_n " i386-ports"
						echo >>$c '#define PCI_HAVE_PM_INTEL_CONF'
						;;
		esac
		echo >>$c '#define PCI_HAVE_64BIT_ADDRESS'
		;;
	sunos)
		case $cpu in
				i?86)		echo_n " i386-ports"
						echo >>$c "#define PCI_HAVE_PM_INTEL_CONF"
						;;
				*)
						echo " The PCI library does not support Solaris for this architecture: $cpu"
						exit 1
						;;
		esac
		echo >>$c '#define PCI_HAVE_STDINT_H'
		;;
	freebsd)
		echo_n " fbsd-device"
		echo >>$c '#define PCI_HAVE_PM_FBSD_DEVICE'
		echo >>$c '#define PCI_PATH_FBSD_DEVICE "/dev/pci"'
		if [ "$realsys" != "GNU/kFreeBSD" ] ; then
			LIBRESOLV=
		fi
		;;
        openbsd)
	        echo_n " obsd-device"
		echo >>$c '#define PCI_HAVE_PM_OBSD_DEVICE'
		echo >>$c '#define PCI_PATH_OBSD_DEVICE "/dev/pci"'
		LIBRESOLV=
		;;
	aix)
		echo_n " aix-device"
		echo >>$c '#define PCI_HAVE_PM_AIX_DEVICE'
		echo >>$m 'CFLAGS=-g'
		echo >>$m 'INSTALL=installbsd'
		echo >>$m 'DIRINSTALL=mkdir -p'
		;;
	netbsd)
		echo_n " nbsd-libpci"
		echo >>$c '#define PCI_HAVE_PM_NBSD_LIBPCI'
		echo >>$c '#define PCI_PATH_NBSD_DEVICE "/dev/pci0"'
		echo >>$m 'LIBNAME=libpciutils'
		echo >>$m 'WITH_LIBS+=-lpci'
		LIBRESOLV=
		;;
    	gnu)
		echo_n " i386-ports"
		echo >>$c '#define PCI_HAVE_PM_INTEL_CONF'
		;;
	cygwin)
		echo_n " i386-ports"
		echo >>$c '#define PCI_HAVE_PM_INTEL_CONF'
		echo >>$m 'WITH_LIBS+=-lioperm'
		;;
	beos|haiku)
		case $cpu in
				i?86|x86_64)	echo_n " i386-ports"
						echo >>$c '#define PCI_HAVE_PM_INTEL_CONF'
						;;
		esac
		echo >>$c '#define PCI_HAVE_STDINT_H'
		;;
	*)
		echo " Unfortunately, your OS is not supported by the PCI Library"
		exit 1
		;;
esac

echo >>$c '#define PCI_HAVE_PM_DUMP'
echo " dump"

echo_n "Checking for zlib support... "
if [ "$ZLIB" = yes -o "$ZLIB" = no ] ; then
	echo "$ZLIB (set manually)"
else
	if [ -f /usr/include/zlib.h -o -f /usr/local/include/zlib.h ] ; then
		ZLIB=yes
	else
		ZLIB=no
	fi
	echo "$ZLIB (auto-detected)"
fi
if [ "$ZLIB" = yes ] ; then
	echo >>$c '#define PCI_COMPRESSED_IDS'
	echo >>$c '#define PCI_IDS "pci.ids.gz"'
	echo >>$m 'LIBZ=-lz'
	echo >>$m 'WITH_LIBS+=$(LIBZ)'
else
	echo >>$c '#define PCI_IDS "pci.ids"'
fi
echo >>$c "#define PCI_PATH_IDS_DIR \"$IDSDIR\""

echo_n "Checking for DNS support... "
if [ "$DNS" = yes -o "$DNS" = no ] ; then
	echo "$DNS (set manually)"
else
	if [ -f /usr/include/resolv.h ] ; then
		DNS=yes
	else
		DNS=no
	fi
	echo "$DNS (auto-detected)"
fi
if [ "$DNS" = yes ] ; then
	echo >>$c "#define PCI_USE_DNS"
	echo >>$c "#define PCI_ID_DOMAIN \"pci.id.ucw.cz\""
	echo >>$m "WITH_LIBS+=$LIBRESOLV"
fi

if [ "$sys" = linux ] ; then
	echo_n "Checking for libkmod... "
	LIBKMOD_DETECTED=
	if [ "$LIBKMOD" != no ] ; then
		if ! which pkg-config >/dev/null ; then
			echo_n "(pkg-config not found) "
		elif pkg-config libkmod ; then
			LIBKMOD_DETECTED=1
		fi
	fi
	if [ "$LIBKMOD" = yes -o "$LIBKMOD" = no ] ; then
		echo "$LIBKMOD (set manually)"
		if [ "$LIBKMOD" = yes -a -z "$LIBKMOD_DETECTED" ] ; then
			echo "Requested use of libkmod, but it is not available. Giving up."
			exit 1
		fi
	else
		if [ -n "$LIBKMOD_DETECTED" ] ; then
			LIBKMOD=yes
		else
			LIBKMOD=no
		fi
		echo "$LIBKMOD (auto-detected)"
	fi
	if [ "$LIBKMOD" = yes ] ; then
		echo >>$c "#define PCI_USE_LIBKMOD"
		echo >>$m "LIBKMOD_CFLAGS=$(pkg-config --cflags libkmod)"
		echo >>$m "LIBKMOD_LIBS=$(pkg-config --libs libkmod)"
	fi
fi

echo "Checking whether to build a shared library... $SHARED (set manually)"
if [ "$SHARED" = no ] ; then
	echo >>$m 'PCILIB=$(LIBNAME).a'
	echo >>$m 'LDLIBS=$(WITH_LIBS)'
	echo >>$m 'LIB_LDLIBS='
else
	echo >>$m 'PCILIB=$(LIBNAME).so.$(VERSION)'
	# We link the dependencies _to_ the library, so we do not need explicit deps in .pc
	echo >>$m 'LDLIBS='
	echo >>$m 'LIB_LDLIBS=$(WITH_LIBS)'
	echo >>$c '#define PCI_SHARED_LIB'
	if [ "$SHARED" = yes ] ; then
		echo >>$m 'SONAME=-Wl,-soname,$(LIBNAME).so$(ABI_VERSION)'
	fi
fi
echo >>$m 'PCILIBPC=$(LIBNAME).pc'

echo >>$c "#define PCILIB_VERSION \"$VERSION\""
sed '/"/{s/^#define \([^ ]*\) "\(.*\)"$/\1=\2/;p;d;};s/^#define \(.*\)/\1=1/' <$c >>$m