xbps/configure

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#!/bin/sh
# Try and be like autotools configure, but without autotools
2013-11-29 14:55:25 +05:30
VERSION=0.28
# 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]
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--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;;
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--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}
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: ${PKGCONFIGDIR:=${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 "$x"
return 0
fi
done
return 1
}
CONFIG_H=config.h
CONFIG_MK=config.mk
if [ -z "$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_H $CONFIG_MK
echo "# Common vars used by XBPS on $OS." >$CONFIG_MK
echo "/* $OS */" >$CONFIG_H
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
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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" >>$CONFIG_MK
echo "CPPFLAGS += -DHAVE_CONFIG_H" >>$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" >>$CONFIG_MK
fi
case "$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 $func() ... "
cat <<EOF >_$func.c
#include <stdio.h>
int main(void) {
vasprintf(NULL, NULL, NULL);
return 0;
}
EOF
if $XCC -D_GNU_SOURCE _$func.c -o _$func 2>/dev/null; then
echo yes.
echo "CPPFLAGS += -DHAVE_VASPRINTF" >> $CONFIG_MK
else
echo no.
echo "COMPAT_SRCS+= compat/vasprintf.o" >>$CONFIG_MK
echo "#include \"compat.h\"" >>$CONFIG_H
fi
rm -f _$func.c _$func
#
# 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" >>$CONFIG_MK
echo "#include \"compat.h\"" >>$CONFIG_H
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
echo "#include \"compat.h\"" >>$CONFIG_H
fi
rm -f _$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" >>$CONFIG_MK
echo "#include \"compat.h\"" >>$CONFIG_H
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" >>$CONFIG_MK
echo "#include \"compat.h\"" >>$CONFIG_H
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