xbps/configure

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

VERSION=0.31

# Ensure that we do not inherit these from env
OS=
BUILD=
HOST=
TARGET=
DEBUG=
BUILD_TESTS=
BUILD_API_DOCS=
BUILD_STATIC=
SILENT=yes
HAVE_VISIBILITY=no

usage()
{
	cat <<_EOF
\`configure' configures XBPS to adapt to many kinds of systems.

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

--prefix=DIR 		Install architecture-independent files in PREFIX
--exec-prefix=DIR 	Install architecture-dependent files in EPREFIX
--sbindir=DIR 		System admin executables [PREFIX/sbin]
--libdir=DIR 		Object code libraries [PREFIX/lib]
--includedir=DIR 	C header files [EPREFIX/include]
--mandir=DIR 		Man documentation [EPREFIX/share/man]
--datadir=DIR 		Read-only architecture-independent data [EPREFIX/share]
--sysconfdir=DIR 	Configuration files directory [PREFIX/etc]
--pkgconfigdir=DIR 	pkg-config directory [EPREFIX/lib/pkgconfig]
--testsdir=DIR		Test suite directory [EPREFIX/tests]
--localstatedir=DIR	Local state directory to store XBPS db files [/var]

--verbose 		Disable silent build to see compilation details
--enable-api-docs 	Install XBPS API Library documentation (default disabled)
--enable-debug		Build with debugging code and symbols (default disabled)
--enable-static 	Build XBPS static utils (default disabled)
--enable-tests		Build and install Kyua tests (default disabled)
			Needs atf >= 0.15 (http://code.google.com/p/kyua)
_EOF
	exit 1
}

for x; do
	opt=${x%%=*}
	var=${x#*=}
	case "$opt" in
	--enable-debug) DEBUG=yes;;
	--prefix) PREFIX=$var;;
	--exec-prefix) EPREFIX=$var;;
	--sbindir) SBINDIR=$var;;
	--mandir) MANDIR=$var;;
	--datadir) SHAREDIR=$var;;
	--build) BUILD=$var;;
	--host) HOST=$var;;
	--target) TARGET=$var;;
	--includedir) INCLUDEDIR=$var;;
	--sysconfdir) ETCDIR=$var;;
	--localstatedir) LOCALSTATEDIR=$var;;
	--libdir) LIBDIR=$var;;
	--datadir|--infodir) ;; # ignore autotools
	--enable-api-docs) BUILD_API_DOCS=$var;;
	--verbose) unset SILENT;;
	--pkgconfigdir) PKGCONFIGDIR=$var;;
	--enable-tests) BUILD_TESTS=yes;;
	--enable-static) BUILD_STATIC=yes;;
	--testsdir) TESTSDIR=$var;;
	--help) usage;;
	*) echo "$0: WARNING: unknown option $opt" >&2;;
	esac
done

: ${SED:=sed}

: ${PREFIX:=/usr/local}
: ${EPREFIX:=${PREFIX}}
: ${SYSCONFDIR:=${PREFIX}/etc}
: ${SBINDIR:=${PREFIX}/sbin}
: ${LIBDIR:=${EPREFIX}/lib}
: ${SHAREDIR:=${EPREFIX}/share}
: ${MANDIR:=${EPREFIX}/share/man}
: ${INCLUDEDIR:=${EPREFIX}/include}
: ${ETCDIR:=${PREFIX}/etc}
: ${PKGCONFIGDIR:=${LIBDIR}/pkgconfig}
: ${TESTSDIR:=${EPREFIX}/tests}
: ${LOCALSTATEDIR:=/var}
: ${DBDIR:=${LOCALSTATEDIR}/db/xbps}
: ${TOPDIR:=..}

_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_MK=config.mk

if [ -z "$BUILD" ]; then
	BUILD=`uname -m`-unknown-`uname -s | tr '[:upper:]' '[:lower:]'`
fi
if [ -z "$HOST" ]; then
	[ -z "$TARGET" ] && TARGET=$BUILD
	HOST=$TARGET
fi
if [ -z "$TARGET" ]; then
	[ -z "$HOST" ] && HOST=$BUILD
	TARGET=$HOST
fi

if [ -z "$OS" ]; then
	# Derive OS from cpu-manufacturer-os-kernel
	CPU=${TARGET%%-*}
	REST=${TARGET#*-}
	MANU=${REST%%-*}
	REST=${REST#*-}
	OS=${REST%%-*}
	REST=${REST#*-}
	KERNEL=${REST%%-*}
fi

echo "Configuring xbps for ... $OS"
rm -f $CONFIG_MK
echo "# Common vars used by XBPS on $OS." >$CONFIG_MK

echo "VERSION = $VERSION" >>$CONFIG_MK
echo "TOPDIR ?=	$TOPDIR" >>$CONFIG_MK
echo "PREFIX ?=	$PREFIX" >>$CONFIG_MK
echo "EPREFIX ?= $EPREFIX" >>$CONFIG_MK
echo "SBINDIR ?= $SBINDIR" >>$CONFIG_MK
echo "INCLUDEDIR ?=	$INCLUDEDIR" >>$CONFIG_MK
echo "LIBDIR ?=	$LIBDIR" >>$CONFIG_MK
echo "MANDIR ?=	$MANDIR" >>$CONFIG_MK
echo "SHAREDIR ?= $SHAREDIR" >>$CONFIG_MK
echo "PKGCONFIGDIR ?= $PKGCONFIGDIR" >>$CONFIG_MK
echo "TESTSDIR ?= $TESTSDIR" >>$CONFIG_MK
echo "DBDIR ?= $DBDIR" >>$CONFIG_MK

ETCDIR="${ETCDIR}/xbps"
echo "ETCDIR ?= $ETCDIR" >>$CONFIG_MK

[ -z "$DEBUG" ] && DEBUG=no

if [ -z "$CC" ]; then
	printf "Looking for compiler ... "
	for b in $TARGET- ""; do
		for cc in gcc pcc icc cc clang; do
			if type $b$cc >/dev/null 2>&1; then
				CC=$b$cc
				echo "$CC"
				break
			fi
		done
		[ -n "$CC" ] && break
	done
	if [ -z "$CC" ]; then
		echo
		echo "no suitable compiler found - aborting" >&2
		exit 1
	fi
else
	echo "Using compiler $CC"
fi

echo "CC = 		$CC" >>$CONFIG_MK
echo "CFLAGS = -O2 -pthread" >>$CONFIG_MK

echo "LDFLAGS =  	-L\$(TOPDIR)/lib" >>$CONFIG_MK
echo "CPPFLAGS = 	-I. -I\$(TOPDIR) -I\$(TOPDIR)/include" >>$CONFIG_MK
echo "CPPFLAGS +=	-DXBPS_SYSCONF_PATH=\\\"${ETCDIR}\\\"" >>$CONFIG_MK
echo "CPPFLAGS +=	-DXBPS_VERSION=\\\"${VERSION}\\\"" >>$CONFIG_MK
echo "CPPFLAGS +=	-D_unused=\"__attribute__((__unused__))\"" >>$CONFIG_MK

if [ -d .git ]; then
	_gitrev=$(git rev-parse --short HEAD)
	echo "CPPFLAGS += -DXBPS_GIT=\\\"${_gitrev}\\\"" >>$CONFIG_MK
fi

if [ -n "$DEBUG" -a "$DEBUG" != no -a "$DEBUG" != false ]; then
	echo "Building with debugging symbols."
	echo "CPPFLAGS += -DDEBUG" >>$CONFIG_MK
	echo "CFLAGS +=	-g" >>$CONFIG_MK
else
	echo "CPPFLAGS+= -DNDEBUG" >>$CONFIG_MK
fi

case "$OS" in
linux)
	echo "CPPFLAGS += 	-D_XOPEN_SOURCE=700" >>$CONFIG_MK
	echo "CPPFLAGS += 	-D_FILE_OFFSET_BITS=64" >> $CONFIG_MK
	;;
*)
	;;
esac

# Add CPPFLAGS/CFLAGS/LDFLAGS to CC for testing features
XCC="$CC $CFLAGS $CPPFLAGS $LDFLAGS"
# Make sure to disable --as-needed for CC tests.
XCC="$XCC -Wl,--no-as-needed"

check_compiler_flag()
{
	local flag="$1"
	local mode="$2"
	local var="$3"
	local rv=0

	[ -z "$var" ] && var="CFLAGS"

	printf "Checking if $CC supports -${mode}${flag} ... "
	cat <<EOF >_ccflag.c
#include <stdio.h>
int main(void) { return 0; }
EOF
	if $XCC -${mode}${flag} _ccflag.c -o _ccflag 2>_ccflag.err; then
		if ! test -s _ccflag.err; then
			if [ "$mode" = "W" -a -z "$var" ]; then
				echo "CPPFLAGS +=	-${mode}${flag}" >>$CONFIG_MK
			else
				echo "$var +=	-${mode}${flag}" >>$CONFIG_MK
			fi
			echo "yes."
		else
			rv=1
			echo "no."
		fi
	else
		rv=1
		echo "no."
	fi
	rm -f _ccflag.c _ccflag _ccflag.err
	return $rv
}

#
# Check for some compiler warning flags.
#
for f in all extra error shadow "format=2" missing-prototypes \
	missing-declarations nested-externs vla no-overlength-strings \
	unsafe-loop-optimizations undef sign-compare \
	missing-include-dirs old-style-definition \
	init-self redundant-decls float-equal missing-noreturn \
	cast-align cast-qual pointer-arith comment \
	declaration-after-statement write-strings stack-protector; do
	check_compiler_flag ${f} W
done

#
# Check for some compiler flags.
#
check_compiler_flag PIC f CFLAGS

check_compiler_flag stack-protector-all f CFLAGS
if [ $? -eq 0 ]; then
	if [ "$CC" = "gcc" ]; then
		check_compiler_flag "param ssp-buffer-size=1" - CFLAGS
	fi
fi
if [ $? -eq 0 ]; then
	echo "CPPFLAGS += -D_FORTIFY_SOURCE=2" >>$CONFIG_MK
fi
check_compiler_flag "visibility=default" f SHAREDLIB_CFLAGS
if [ $? -eq 0 ]; then
	HAVE_VISIBILITY=yes
	echo "CPPFLAGS +=	-DHAVE_VISIBILITY=1" >>$CONFIG_MK
	echo "HAVE_VISIBILITY = 1" >>$CONFIG_MK
fi

#
# Check for -Wl,--export-dynamic and if it fails, try -rdynamic.
#
check_compiler_flag "l,--export-dynamic" W LIBXBPS_LDFLAGS
if [ $? -ne 0 ]; then
	check_compiler_flag dynamic r LIBXBPS_LDFLAGS
fi

#
# Check for -Wl,-z,relro,-z,now
check_compiler_flag "l,-z,relro,-z,now" W LDFLAGS

#
# Check if -fPIE and -pie are supported if --build-pie is set.
#
check_compiler_flag PIE f PROG_CFLAGS
if [ $? -eq 0 ]; then
	check_compiler_flag pie "" PROG_LDFLAGS
fi
if [ $? -eq 0 ]; then
	BUILD_PIE_VALUE=yes
else
	BUILD_PIE_VALUE=no
fi

#
# A C99 compiler is required to build xbps.
#
check_compiler_flag "std=c99" "" CFLAGS
if [ $? -ne 0 ]; then
	echo "ERRROR: A compatible C99 compiler is required, exiting..."
	exit 1
fi

if [ -n "$CFLAGS" ]; then
	echo "CFLAGS +=	$CFLAGS" >>$CONFIG_MK
fi
if [ -n "$LDFLAGS" ]; then
	echo "LDFLAGS += $LDFLAGS" >>$CONFIG_MK
fi
if [ -n "$CPPFLAGS" ]; then
	echo "CPPFLAGS += $CPPFLAGS" >>$CONFIG_MK
fi

# libfetch
echo "CPPFLAGS +=	-I\$(TOPDIR)/lib/fetch" >>$CONFIG_MK
echo "LDFLAGS +=	-lssl" >>$CONFIG_MK
echo "STATIC_LIBS =	\$(TOPDIR)/lib/libxbps.a" >>$CONFIG_MK

# proplib
echo "CPPFLAGS +=       -I\$(TOPDIR)/lib/portableproplib" >>$CONFIG_MK
echo "CPPFLAGS +=       -I\$(TOPDIR)/lib/portableproplib/prop" >>$CONFIG_MK
echo "LDFLAGS +=	-lpthread" >>$CONFIG_MK
echo "STATIC_LIBS +=	-lpthread" >>$CONFIG_MK

#
# Check for vasprintf().
#
func=vasprintf
printf "Checking for $func() ... "
if test -n "$HAVE_VASPRINTF"; then
	echo "yes (cached)."
else
	cat <<EOF >_$func.c
#define _GNU_SOURCE
#include <stdio.h>
int main(void) {
	vasprintf(NULL, NULL, NULL);
	return 0;
}
EOF

	if $XCC _$func.c -o _$func 2>/dev/null; then
		echo yes.
		HAVE_VASPRINTF=1
	else
		echo no.
	fi
	rm -f _$func.c _$func
fi
if test -n "$HAVE_VASPRINTF"; then
	echo "CPPFLAGS +=	-DHAVE_VASPRINTF" >> $CONFIG_MK
else
	echo "COMPAT_SRCS+=	compat/vasprintf.o" >>$CONFIG_MK
fi

#
# Check for strcasestr().
#
func=strcasestr
printf "Checking for $func() ... "
cat <<EOF >_$func.c
#define _GNU_SOURCE
#include <string.h>
int main(void) {
	const char *h = "NEEDCOFEE";
	const char *n = "IneedCoffee";
	strcasestr(n, h);
	return 0;
}
EOF
if $XCC _$func.c -o _$func 2>/dev/null; then
	echo yes.
	echo "CPPFLAGS +=	-DHAVE_STRCASESTR" >>$CONFIG_MK
else
	echo no.
	echo "COMPAT_SRCS +=	compat/strcasestr.o" >>$CONFIG_MK
fi
rm -f _$func _$func.c

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

#
# Check for strlcat().
func=strlcat
printf "Checking for $func() ... "
cat <<EOF > _$func.c
#include <string.h>
int main(void) {
	const char src[] = "foo";
	char dst[10];
	strlcat(dst, src, sizeof(dst));
	return 0;
}
EOF
if $XCC _$func.c -o _$func 2>/dev/null; then
	echo yes.
	echo "CPPFLAGS +=	-DHAVE_STRLCAT" >>$CONFIG_MK
else
	echo no.
	echo "COMPAT_SRCS +=	compat/strlcat.o" >>$CONFIG_MK
fi
rm -f _$func.c _$func

#
# Check for humanize_number().
func=humanize_number
printf "Checking for $func() ... "
cat <<EOF > _$func.c
#include <stdio.h>
#include <util.h>

int main(void) {
	humanize_number(NULL, 0, 0, NULL, 0, 0);
	return 0;
}
EOF
if $XCC -lutil _$func.c -o _$func 2>/dev/null; then
	echo yes.
	echo "CPPFLAGS+= -DHAVE_HUMANIZE_NUMBER" >>$CONFIG_MK
else
	echo no.
	echo "COMPAT_SRCS+=	compat/humanize_number.o" >>$CONFIG_MK
fi
rm -f _$func.c _$func

#
# Check for rbtree_ininit().
#
func=rb_tree_init
printf "Checking for $func() ... "
cat <<EOF > _$func.c
#include <sys/rbtree.h>
int main(void) {
	rb_tree_init(NULL, NULL);
	return 0;
}
EOF
if $XCC _$func.c -o _$func 2>/dev/null; then
	echo yes.
	echo "CPPFLAGS += -DHAVE_RBTREE" >>$CONFIG_MK
else
	echo no.
	echo "LIBPROP_OBJS += portableproplib/rb.o" >>$CONFIG_MK
fi
rm -f _$func.c _$func

#
# Check for fdatasync().
#
func=fdatasync
printf "Checking for $func() ... "
cat <<EOF > _$func.c
#include <unistd.h>
int main(void) {
	fdatasync(0);
	return 0;
}
EOF
if $XCC _$func.c -o _$func 2>/dev/null; then
	echo yes.
	echo "CPPFLAGS += -DHAVE_FDATASYNC" >>$CONFIG_MK
else
	echo no.
fi
rm -f _$func.c _$func

#
# Check for clock_gettime(3).
#
func=clock_gettime
printf "Checking for $func() ... "
cat <<EOF > _$func.c
#include <time.h>
int main(void) {
	struct timespec ts;
	clock_gettime(CLOCK_MONOTONIC, &ts);
	return 0;
}
EOF
if $XCC -lrt _$func.c -o _$func 2>/dev/null; then
	echo yes.
	echo "CPPFLAGS	+= -DHAVE_CLOCK_GETTIME" >>$CONFIG_MK
	echo "LDFLAGS += -lrt" >>$CONFIG_MK
	echo "STATIC_LIBS += -lrt" >>$CONFIG_MK
else
	echo no.
fi
rm -f _$func.c _$func

#
# zlib is required.
#
func=InflateInit2
printf "Checking for $func() ... "
cat <<EOF > _$func.c
#include <zlib.h>
int main(void) {
	z_stream strm;
	strm.zalloc = Z_NULL;
	strm.zfree = Z_NULL;
	strm.opaque = Z_NULL;
	strm.avail_in = 0;
	strm.next_in = Z_NULL;
	inflateInit2(&strm, 15+16);
	return 0;
}
EOF
if $XCC -lz _$func.c -o _$func 2>/dev/null; then
	echo yes.
	echo "LDFLAGS +=	-lz" >>$CONFIG_MK
	echo "STATIC_LIBS +=	-lz" >>$CONFIG_MK
else
	ZLIB=no
fi
rm -f _$func.c _$func
if [ "$ZLIB" = "no" ]; then
	echo "Failed to link with your system's zlib, can't continue..."
	exit 1
fi

#
# If building API library documentation, doxygen and graphviz are required.
#
if [ -n "$BUILD_API_DOCS" ]; then
	echo "Building API documentation via doxygen and graphviz."
	printf "Checking for doxygen ..."
	DOXYGEN_BIN=$(_which doxygen)
	if [ -z "$DOXYGEN_BIN" ]; then
		echo "not found, exiting."
		exit 1
	else
		echo yes
	fi
	printf "Checking for graphviz ... "
	DOT_BIN=$(_which dot)
	if [ -z "$DOT_BIN" ]; then
		echo "dot(1) command not found, exiting."
		exit 1
	else
		echo yes
	fi

	echo "BUILD_API_DOCS=	yes" >> $CONFIG_MK
	BUILD_API_DOCS_VALUE=yes
else
	BUILD_API_DOCS_VALUE=no
fi

#
# pkg-config is required to know dependencies for static linking.
#
printf "Checking for pkg-config ... "
PKGCONFIG_BIN=$(_which pkg-config)
if [ -z "$PKGCONFIG_BIN" ]; then
	echo "not found, exiting."
	exit 1
else
	echo yes
fi

#
# libarchive >= 2.8.0 with pkg-config support is required.
#
printf "Checking for libarchive >= 2.8.0 via pkg-config ... "
if ! $PKGCONFIG_BIN --atleast-version=2.8.0 libarchive; then
	echo "libarchive.pc file not found, exiting."
	exit 1
else
	echo "found version $($PKGCONFIG_BIN --modversion libarchive)."
	echo "CFLAGS += $($PKGCONFIG_BIN --cflags libarchive)" >>$CONFIG_MK
	echo "LDFLAGS +=        $($PKGCONFIG_BIN --libs libarchive)" >>$CONFIG_MK
	echo "STATIC_LIBS +=    $($PKGCONFIG_BIN --libs --static libarchive)" \
		>>$CONFIG_MK
fi

#
# confuse >= 2.7 with pkg-config support is required.
#
printf "Checking for confuse via pkg-config ..."
if ! $PKGCONFIG_BIN --exists libconfuse; then
	echo "libconfuse.pc not found, exiting."
	exit 1
else
	echo "found version $($PKGCONFIG_BIN --modversion libconfuse)."
	echo "CFLAGS += $($PKGCONFIG_BIN --cflags libconfuse)" >>$CONFIG_MK
	echo "LDFLAGS += $($PKGCONFIG_BIN --libs libconfuse)" >>$CONFIG_MK
	echo "STATIC_LIBS += $($PKGCONFIG_BIN --libs --static libconfuse)" \
		>>$CONFIG_MK
fi

#
# OpenSSL libssl with pkg-config support is required when building
# the static binaries.
#
if [ "$BUILD_STATIC" = "yes" ]; then
	printf "Checking for OpenSSL via pkg-config ... "
	if ! $PKGCONFIG_BIN --exists libssl; then
		echo "libssl.pc file not found, exiting."
		exit 1
	else
		echo "found version $($PKGCONFIG_BIN --modversion libssl)."
		echo "CFLAGS += $($PKGCONFIG_BIN --cflags libssl)" >>$CONFIG_MK
		echo "LDFLAGS +=        $($PKGCONFIG_BIN --libs libssl)" >>$CONFIG_MK
		echo "STATIC_LIBS +=    $($PKGCONFIG_BIN --libs --static libssl)" \
			>>$CONFIG_MK
	fi
else
	func=SHA256
	printf "Checking for OpenSSL $func() ... "
cat <<EOF > _$func.c
#include <openssl/sha.h>
int main(void) {
	SHA256(NULL, NULL, 0);
	return 0;
}
EOF
	if $XCC -lcrypto _$func.c -o _$func 2>/dev/null; then
		echo yes.
		echo "LDFLAGS +=	-lcrypto" >>$CONFIG_MK
	else
		CRYPTO_SHA256=no
	fi
	rm -f _$func.c _$func
	if [ "$CRYPTO_SHA256" = "no" ]; then
		echo "Failed to link with your system's OpenSSL library, can't continue..."
		exit 1
	fi
fi

#
# If --with-static enabled, build static binaries.
#
if [ "$BUILD_STATIC" = "yes" ]; then
	echo "BUILD_STATIC = yes" >>$CONFIG_MK
	BUILD_STATIC_VALUE=yes
else
	BUILD_STATIC_VALUE=no
fi

#
# If --with-tests enabled, check for ATF >= 0.15 via pkg-config.
#
if [ "$BUILD_TESTS" = "yes" ]; then
	printf "Checking for ATF via pkg-config ... "
	if ! $PKGCONFIG_BIN --atleast-version=0.15 atf-c; then
		echo "ATF >= 0.15 not found in PKG_CONFIG_LIBDIR, exiting."
		exit 1
	fi
	echo "found version $($PKGCONFIG_BIN --modversion atf-c)."
	echo "TEST_CFLAGS += $($PKGCONFIG_BIN --cflags atf-c)" >>$CONFIG_MK
	echo "TEST_LDFLAGS += $($PKGCONFIG_BIN --libs atf-c)" >>$CONFIG_MK
	echo "BUILD_TESTS = yes" >>$CONFIG_MK
	BUILD_TESTS_VALUE=yes
else
	BUILD_TESTS_VALUE=no
fi

if [ -n "$SILENT" ]; then
	echo "SILENT = @" >>$CONFIG_MK
else
	echo "SILENT =" >>$CONFIG_MK
fi

echo
echo "  XBPS has been configured with the following options:"
echo
echo "   PREFIX = 		$PREFIX"
echo "   EPREFIX = 		$EPREFIX"
echo "   SBINDIR =		$SBINDIR"
echo "   LIBDIR =		$LIBDIR"
echo "   INCLUDEDIR =		$INCLUDEDIR"
echo "   SHAREDIR =		$SHAREDIR"
echo "   MANDIR =		$MANDIR"
echo "   ETCDIR =		$ETCDIR"
echo "   DBDIR =		$DBDIR"

if [ -n "$CFLAGS" ]; then
	echo "   CFLAGS =		$CFLAGS"
fi
if [ -n "$LDFLAGS" ]; then
	echo "   LDFLAGS =		$LDFLAGS"
fi
echo
echo "   Build API documentation =	$BUILD_API_DOCS_VALUE"
echo "   Build Kyua test suite =	$BUILD_TESTS_VALUE"
echo "   Build programs as PIE =	$BUILD_PIE_VALUE"
echo "   Build static programs =	$BUILD_STATIC_VALUE"
echo "   Build with debug  =		$DEBUG"
if [ -n "$HAVE_VISIBILITY" ]; then
	echo "   Symbol visibility =		$HAVE_VISIBILITY"
fi
echo
echo "  You can now run make && make install clean."
echo

exit 0