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configure
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configure
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#!/bin/sh
# This script was automatically generated by ACR v0.10.0
# @author: pancake <nopcode.org>
# @url: http://www.nopcode.org
# @repo: git clone https://github.com/radare/acr
do_remove() {
if [ "${ACR_RMFILES}" ]; then
printf "cleaning temporally files... "
rm -f ${ACR_RMFILES}
echo "done"
fi
}
control_c() {
printf "\n\n^C control-c : script execution interrupted.\n"
do_remove
exit 1
}
trap control_c 2
DEBUGGER=1
USE_MAGIC=0
LOADLIBS=1
HAVE_FORK=1
WITH_CAPSTONE=0
USE_ZIP=0
WITH_GPL=1
WANT_OPENSSL=0
USE_RPATH=0
HAVE_LILEND=0
HAVE_BIGEND=0
[ -z "${USERCC}" ] && USERCC="gcc"
[ -z "${USEROSTYPE}" ] && USEROSTYPE="auto"
WITHPIC=1
WITHNONPIC=0
[ -z "${LIBVERSION}" ] && LIBVERSION="xxx"
split_host() {
S="$"
while : ; do
ENVWORDS="${ENVWORDS} $1_CPU $1_OS"
STR=`eval "echo ${S}$1"`
SPLIT_CPU="`echo "$STR" | cut -d - -f 1`"
SPLIT_OS="`echo "$STR" | awk -F - '{
if ($2=="unknown"){
if (NF<3) { print $2; } else { print $3; }
} else {
if ($2=="linux") { print $2; } else
if (NF<3) { print $2; } else { print $3; }
}
}'`"
eval "$1_CPU=\"$SPLIT_CPU\""
eval "$1_OS=\"$SPLIT_OS\""
shift
[ -z "$1" ] && break
done
}
VPATH=`dirname ${0}`
if [ "${VPATH}" = "." ]; then
WODIS=current
else
if [ "${VPATH}" = "${PWD}" ]; then
VPATH=.
WODIS=current
else
WODIS=crosspath
CURDIR=$PWD
cd $VPATH
VPATH="${PWD}/"
cd $CURDIR
fi
fi
guess_os() {
if [ -e "${VPATH}/config.guess" ]; then
sh ${VPATH}/config.guess
return
fi
CPU="`uname -m|sed -e 's, ,,g'|cut -d - -f 1`"
OS="`uname -s|tr A-Z a-z`"
GNU="`uname --help 2>&1 | grep gnu`"
[ "${GNU}" ] && OS="${OS}-gnu"
[ "${CPU}" = ppc ] && CPU="powerpc"
echo "${CPU}-unknown-${OS}"
}
SEARCHPATH="/usr /usr/local /usr/pkg /sw"
: ${PREFIX:=/usr/local}
CROSSBUILD=0
BUILD=`guess_os`
HOST="${BUILD}"
TARGET="${HOST}"
SYSCONFDIR=""
create_environ() {
: ${EPREFIX:=${PREFIX}}
: ${SPREFIX:=${PREFIX}}
: ${BINDIR:=${SPREFIX}/bin}
: ${SBINDIR:=${PREFIX}/sbin}
: ${SYSCONFDIR:=${SPREFIX}/etc}
: ${LIBDIR:=${SPREFIX}/lib}
: ${LIBEXECDIR:=${SPREFIX}/libexec}
: ${INCLUDEDIR:=${SPREFIX}/include}
: ${DATADIR:=${SPREFIX}/share}
: ${INFODIR:=${DATADIR}/info}
: ${MANDIR:=${DATADIR}/man}
: ${LOCALSTATEDIR:=${SPREFIX}/var}
for A in `echo ${PATH} | sed -e 's,:, ,g'` ; do
[ -e $A/ginstall ] && : ${INSTALL:=$A/ginstall} && break
[ -e $A/install ] && : ${INSTALL:=$A/install} && break
done
: ${INSTALL_DIR:=${INSTALL} -d}
: ${INSTALL_DATA:=${INSTALL} -m 644}
: ${INSTALL_SCRIPT:=${INSTALL} -m 755}
: ${INSTALL_PROGRAM:=${INSTALL} -m 755}
: ${INSTALL_PROGRAM_STRIP:=${INSTALL} -m 755 -s}
: ${INSTALL_MAN:=${INSTALL} -m 444}
: ${INSTALL_LIB:=${INSTALL} -m 755 -c}
PKGNAME='radare2' ; VERSION='0.10.2-git' ; CONTACT_MAIL="[email protected]" ; CONTACT_NAME="pancake" ; CONTACT="pancake <[email protected]>" ;
}
show_usage() {
cat <<EOF2
'configure' configures radare2-0.10.2-git 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
-V, --version display version information and exit
-r, --report show what libs/programs require to work
Installation directories:
--prefix=PREFIX install arch-independent files in PREFIX [/usr/local]
--exec-prefix=EPREFIX install arch-dependent files in EPREFIX [PREFIX]
--sandbox=SPREFIX sandbox prefix directory: SPREFIX [PREFIX]
Fine tuning of the installation directories:
--bindir=DIR user executables [EPREFIX/bin]
--sbindir=DIR system admin executables [EPREFIX/sbin]
--libexecdir=DIR program executables [EPREFIX/libexec]
--datadir=DIR read-only architecture-independent data [PREFIX/share]
--sysconfdir=DIR read-only single-machine data [PREFIX/etc]
--sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
--localstatedir=DIR modifiable single-machine data [PREFIX/var]
--libdir=DIR object code libraries [EPREFIX/lib]
--libpath=DIR set rpath/libname-path to linker
--includedir=DIR C header files [PREFIX/include]
--infodir=DIR info documentation [DATADIR/info]
--mandir=DIR man documentation [DATADIR/man]
System types:
--build=BUILD configure for building on BUILD [guessed]
--host=HOST cross-compile to build programs to run on HOST [BUILD]
--target=TARGET configure for building compilers for TARGET [HOST]
EOF2
printf "
Optional Features:
--disable-debugger disable native debugger features
--with-sysmagic force to use system's magic
--disable-loadlibs disable loading plugins
--without-fork disable fork
--with-syscapstone force to use system-wide capstone
--with-syszip force to use system's libzip and zlib
--without-gpl do not build GPL code (grub, cxx, ... )
--with-openssl build with openssl if possible
--with-rpath use rpath to build
--with-little-endian force little endian
--with-big-endian force big endian
--with-compiler Define compiler to use (see mk/) (USERCC=gcc)
--with-ostype Choose OS type ( gnulinux windows darwin haiku ) (USEROSTYPE=auto)
--without-pic do not build libr as a program independent location
--with-nonpic build the library archives .a
--with-libversion specify different libversion (LIBVERSION=xxx)
"
printf "
Some influential environment variables:
CC C compiler command
CFLAGS C compiler flags
CPPFLAGS C preprocessor 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
"
printf "
Report bugs to: pancake <[email protected]>"
echo ""
exit 0
}
take_environ() {
: ${SH:=/bin/sh}
: ${CPP:=cpp}
: ${CC:=gcc}
: ${PREFIX:=/usr/local/}
}
show_version() {
echo "radare2-0.10.2-git configuration script done with acr v0.10.0.
The 'Free Software Foundation' message is only for autodetection.
Originally written by pancake <nopcode.org>."
exit 0
}
parse_options() {
flag=`echo $1| cut -d = -f 1`
value=`echo $1| awk 'BEGIN{FS="=";}{print $2}'`
flag2=`echo $flag|cut -f2- -d -| sed -e 's,-,_,g' -e 's,^_,,g'|tr '[a-z]' '[A-Z]'`
if [ "${TARGET_OS}" = "darwin" ]; then
LIBPATH=-Wl,-install_name,
else
LIBPATH=-Wl,-R
fi
case $flag in
-h|--help|--hel|--h|--he|-help)
show_usage ; ;;
-V|-version|--version)
show_version ; ;;
-r|--r|--report)
echo "PKGNAME: radare2"
echo "VERSION: 0.10.2-git"
echo "LANGS: c"
echo "REQUIRED: libdl"
echo "OPTIONAL: libmagic"
echo "PKG-CONFIG: capstone openssl"
echo "FLAGS: --disable-debugger --with-sysmagic --disable-loadlibs --without-fork --with-syscapstone --with-syszip --without-gpl --with-openssl --with-rpath --with-little-endian --with-big-endian --with-compiler=gcc --with-ostype=auto --without-pic --with-nonpic --with-libversion=xxx"
exit 0
;;
--cache-file)
# ignored: acr have no cache
;;
--build)
BUILD="$value"; split_host BUILD ; ;;
--host)
CROSSBUILD=1 # XXX
HOST="$value"; split_host HOST ; ;;
--target)
TARGET="$value"; split_host TARGET ; ;;
--prefix)
PREFIX="$value"; ;;
--exec-prefix)
EPREFIX="$value"; ;;
--sandbox|--sprefix)
SPREFIX="$value"; ;;
--bindir)
BINDIR="$value"; ;;
--sbindir)
SBINDIR="$value"; ;;
--libexecdir)
LIBEXECDIR="$value"; ;;
--datadir)
DATADIR="$value"; ;;
--sysconfdir)
SYSCONFDIR="$value"; ;;
--sharedstatedir)
SHAREDSTATEDIR="$value"; ;;
--localstatedir)
LOCALSTATEDIR="$value"; ;;
--libdir)
LIBDIR="$value"; ;;
--libpath)
LDFLAGS="${LDFLAGS} ${LIBPATH}$value"; ;;
--includedir)
INCLUDEDIR="$value"; CFLAGS="${CFLAGS} -I$value"; ;;
--infodir)
INFODIR="$value"; ;;
--mandir)
MANDIR="$value"; ;;
"--disable-debugger") DEBUGGER="0"; ;;
"--with-sysmagic") USE_MAGIC="1"; ;;
"--disable-loadlibs") LOADLIBS="0"; ;;
"--without-fork") HAVE_FORK="0"; ;;
"--with-syscapstone") WITH_CAPSTONE="1"; ;;
"--with-syszip") USE_ZIP="1"; ;;
"--without-gpl") WITH_GPL="0"; ;;
"--with-openssl") WANT_OPENSSL="1"; ;;
"--with-rpath") USE_RPATH="1"; ;;
"--with-little-endian") HAVE_LILEND="1"; ;;
"--with-big-endian") HAVE_BIGEND="1"; ;;
--with-compiler) if [ -z "${value}" ]; then USERCC="gcc"; else USERCC="${value}" ; fi ;;
--with-ostype) if [ -z "${value}" ]; then USEROSTYPE="auto"; else USEROSTYPE="${value}" ; fi ;;
"--without-pic") WITHPIC="0"; ;;
"--with-nonpic") WITHNONPIC="1"; ;;
--with-libversion) if [ -z "${value}" ]; then LIBVERSION="xxx"; else LIBVERSION="${value}" ; fi ;;
*) if [ "$value" ]; then eval "`echo $flag2=$value`" ;
else echo ; echo "WARNING: Unknown flag '$flag'." >&2 ; echo ; fi ;;
esac
}
# MAIN #
take_environ
split_host BUILD HOST TARGET
[ -z "$ACRHOOK" ] && ACRHOOK=./configure.hook
[ -e "$ACRHOOK" ] && . ${ACRHOOK}
while : ; do
[ -z "$1" ] && break
parse_options $1
shift
done
ENVWORDS="MANDIR INFODIR LIBDIR INCLUDEDIR LOCALSTATEDIR SYSCONFDIR DATADIR LIBEXECDIR SBINDIR BINDIR EPREFIX PREFIX SPREFIX TARGET HOST BUILD INSTALL INSTALL_LIB INSTALL_MAN INSTALL_PROGRAM INSTALL_PROGRAM_STRIP INSTALL_DIR INSTALL_SCRIPT INSTALL_DATA HOST_OS HOST_CPU BUILD_OS BUILD_CPU TARGET_OS TARGET_CPU PKGNAME VPATH VERSION CONTACT CONTACT_NAME CONTACT_MAIL CC CFLAGS CPPFLAGS LDFLAGS HAVE_LANG_C DEBUGGER HAVE_LIB_DL DL_LIBS HAVE_PATCH PATCH HAVE_GIT GIT LIL_ENDIAN BIG_ENDIAN BYTEORDER HAVE_LIB_MAGIC USE_MAGIC USE_LIB_MAGIC LIBMAGIC LOADLIBS HAVE_FORK WITH_CAPSTONE CAPSTONE_CFLAGS CAPSTONE_LDFLAGS HAVE_PKGCFG_CAPSTONE USE_CAPSTONE HAVE_LIB_Z HAVE_LIB_ZIP USE_ZIP USE_LIB_ZIP LIBZIP WITH_GPL HAVE_LIB_GMP HAVE_GMP HAVE_LIB_SSL SSL_CFLAGS SSL_LDFLAGS HAVE_PKGCFG_OPENSSL HAVE_OPENSSL WANT_OPENSSL USE_RPATH HAVE_LILEND HAVE_BIGEND HAVE_LIB_LUA5_1 USERCC USEROSTYPE WITHPIC WITHNONPIC LIBVERSION"
create_environ
echo "checking build system type... ${BUILD}"
echo "checking host system type... ${HOST}"
echo "checking target system type... ${TARGET}"
[ "${CROSSBUILD}" = 1 ] && echo "using crosscompilation mode."
#split_host BUILD HOST TARGET
[ -n "${prefix}" ] && PREFIX=${prefix}
echo "checking for working directories... ${WODIS}"
echo "using prefix '${PREFIX}'"
ACR_RMFILES=" test.c a.out a.exe"
:
COMPILER=CC
printf "checking for c compiler... "
HAVE_LANG_C=1
if [ "${CROSSBUILD}" = 1 ]; then
(command -v ${HOST}-${CC} >/dev/null 2>&1)
if [ $? = 0 ]; then CC="${HOST}-${CC}"; fi
fi
echo "int main(int argc, char **argv){return 0;}" > test.c
(exec ${CC} ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} test.c >/dev/null 2>&1)
if [ $? = 0 ]; then echo ${CC}; else
echo no ; HAVE_LANG_C=0
do_remove
echo "ERROR: ${CC} cannot create executables" >&2 ;
exit 1 ; fi
printf "checking for dynamic library... "
HAVE_LIB_DL=0
for OS in gnulinux linux gnu/kfreebsd syllable sunos darwin beos solaris ; do
if [ "${HOST_OS}" = "${OS}" ]; then
HAVE_LIB_DL=1
break;
fi
done
if [ "${HAVE_LIB_DL}" = 1 ]; then
DL_LIBS="-ldl"
echo "required"
else
DL_LIBS=""
echo "libc"
fi
printf "checking for patch... "
if [ -x "${PATCH}" ]; then
FIND=${PATCH}
else
FIND=""
IFS=:
for A in ${PATH} ; do
if [ -x "${A}/patch" ]; then
FIND="${A}/patch"
break;
fi
done
unset IFS
fi
if [ -n "${FIND}" ]; then
echo ${FIND};
HAVE_PATCH=1
PATCH=${FIND}
else
HAVE_PATCH=0
PATCH=patch
echo no
echo "error: This program is required." >&2
exit 1 ; fi
printf "checking for git... "
if [ -x "${GIT}" ]; then
FIND=${GIT}
else
FIND=""
IFS=:
for A in ${PATH} ; do
if [ -x "${A}/git" ]; then
FIND="${A}/git"
break;
fi
done
unset IFS
fi
if [ -n "${FIND}" ]; then
echo ${FIND};
HAVE_GIT=1
GIT=${FIND}
else
HAVE_GIT=0
GIT=git
echo no ; fi
printf "checking host endianness... "
LIL_ENDIAN=$(printf I|od|awk '{print substr($2,6,1);exit}')
if [ 0 != 0 -o "${LIL_ENDIAN}" = 1 ]; then
BYTEORDER=1234
BIG_ENDIAN=0
echo little
else
BYTEORDER=4321
BIG_ENDIAN=1
LIL_ENDIAN=0
echo big
fi
check_library() {
VAR=$1
S="$"
_REQUIRED=$3
_CHKLIB_NAME=$2
_CHKLIB_LIBS=$(echo "-l${_CHKLIB_NAME}" | sed 's,+, -l,g')
printf "checking for lib${_CHKLIB_NAME} ... "
echo "int main(int ac, char **av){return 0;}" > test.c
eval ${S}${COMPILER} ${CFLAGS} ${CPPFLAGS} ${CXXFLAGS} ${LDFLAGS} ${_CHKLIB_LIBS} test.c >/dev/null 2>&1
if [ $? = 0 ]; then
eval ${VAR}=1
echo yes
else
eval ${VAR}=0
echo no ; fi }
check_library HAVE_LIB_MAGIC magic 0
if [ 11 = "$HAVE_LIB_MAGIC$USE_MAGIC" ]; then
USE_LIB_MAGIC="1"
LIBMAGIC="-lmagic"
else
USE_LIB_MAGIC="0"
LIBMAGIC="-lr_magic"; fi
[ -z "${PKGCONFIG}" ] && PKGCONFIG=pkg-config
echo 'Using PKGCONFIG: '${PKGCONFIG}
printf 'checking pkg-config flags for capstone... '
tmp=`${PKGCONFIG} --cflags capstone 2>/dev/null`
if [ $? != 0 ]; then echo no ; HAVE_PKGCFG_CAPSTONE=0;
else
CAPSTONE_CFLAGS=$tmp;
tmp=`${PKGCONFIG} --libs capstone 2>/dev/null`
if [ $? = 0 ]; then
echo yes; HAVE_PKGCFG_CAPSTONE=1;
CAPSTONE_LDFLAGS=$tmp; fi; fi
if [ 11 = "$WITH_CAPSTONE$HAVE_PKGCFG_CAPSTONE" ]; then
USE_CAPSTONE="1"
else
USE_CAPSTONE="0"; fi
check_library HAVE_LIB_Z z 0
check_library HAVE_LIB_ZIP zip 0
if [ 11 = "$HAVE_LIB_Z$USE_ZIP" ]; then
if [ "$HAVE_LIB_ZIP" = "1" ]; then
USE_LIB_ZIP="1"
LIBZIP="-lz -lzip"
else
USE_LIB_ZIP="0"
LIBZIP="-lrz"; fi
else
USE_LIB_ZIP="0"
LIBZIP="-lrz"; fi
HAVE_LIB_GMP="0"
HAVE_GMP="0"
check_library HAVE_LIB_SSL ssl 0
[ -z "${PKGCONFIG}" ] && PKGCONFIG=pkg-config
echo 'Using PKGCONFIG: '${PKGCONFIG}
printf 'checking pkg-config flags for openssl... '
tmp=`${PKGCONFIG} --cflags openssl 2>/dev/null`
if [ $? != 0 ]; then echo no ; HAVE_PKGCFG_OPENSSL=0;
else
SSL_CFLAGS=$tmp;
tmp=`${PKGCONFIG} --libs openssl 2>/dev/null`
if [ $? = 0 ]; then
echo yes; HAVE_PKGCFG_OPENSSL=1;
SSL_LDFLAGS=$tmp; fi; fi
if [ ! "$SSL_LDFLAGS" = "" ]; then
HAVE_OPENSSL="1"; fi
if [ 11 = "$WANT_OPENSSL$HAVE_OPENSSL" ]; then
HAVE_OPENSSL="1"
else
HAVE_OPENSSL="0"; fi
if [ "$SSL_LDFLAGS" = "" ]; then
if [ "$HAVE_LIB_SSL" = "0" ]; then
HAVE_OPENSSL="0"
else
SSL_LDFLAGS="-lssl"; fi; fi
if [ "$HAVE_LILEND" = "1" ]; then
LIL_ENDIAN="1"; fi
if [ "$HAVE_BIGEND" = "1" ]; then
LIL_ENDIAN="0"; fi
check_library HAVE_LIB_LUA5_1 lua5.1 0
if [ "$USEROSTYPE" = "auto" ]; then
if [ "$HOST_OS" = "mingw32_nt-6.2" ]; then
USEROSTYPE="mingw32"
else
if [ "$HOST_OS" = "mingw32_nt" ]; then
USEROSTYPE="mingw32"
else
if [ "$HOST_OS" = "linux" ]; then
USEROSTYPE="gnulinux"
else
if [ "$HOST_OS" = "gnu" ]; then
USEROSTYPE="gnulinux"
HAVE_LIB_DL="1"
DL_LIBS="-ldl"
else
if [ "$HOST_OS" = "gnu/kfreebsd" ]; then
USEROSTYPE="bsd"
else
if [ "$HOST_OS" = "netbsd" ]; then
USEROSTYPE="bsd"
else
if [ "$HOST_OS" = "freebsd" ]; then
USEROSTYPE="bsd"
else
if [ "$HOST_OS" = "openbsd" ]; then
USEROSTYPE="bsd"
else
if [ "$HOST_OS" = "darwin" ]; then
USEROSTYPE="darwin"; fi; fi; fi; fi; fi; fi; fi; fi; fi; fi
if [ "$LIBVERSION" = "xxx" ]; then
LIBVERSION="$VERSION"; fi
SEDFLAGS=" -e '"
COUNT=0
for A in ${ENVWORDS} ; do
[ "${A}" = VPATH ] && continue
[ "${A}" = srcdir ] && continue
eval "VAR=\$${A}"
VAR="`echo ${VAR} | sed -e 's/\,/\\\,/g'`"
[ $COUNT = 10 ] && COUNT=0 && SEDFLAGS="${SEDFLAGS}' -e '"
COUNT=$(($COUNT+1))
SEDFLAGS="${SEDFLAGS}s,@${A}@,${VAR},g;"
done
SEDFLAGS="${SEDFLAGS}'"
for A in ./config-user.mk libr/include/r_userconf.h pkgcfg/r_io.pc pkgcfg/r_db.pc pkgcfg/r_magic.pc pkgcfg/r_asm.pc pkgcfg/r_bin.pc pkgcfg/r_anal.pc pkgcfg/r_hash.pc pkgcfg/r_cons.pc pkgcfg/r_core.pc pkgcfg/r_lang.pc pkgcfg/r_socket.pc pkgcfg/r_debug.pc pkgcfg/r_reg.pc pkgcfg/r_config.pc pkgcfg/r_flags.pc pkgcfg/r_syscall.pc pkgcfg/r_util.pc pkgcfg/r_search.pc pkgcfg/r_bp.pc pkgcfg/r_parse.pc pkgcfg/r_fs.pc ; do # SUBDIRS
if [ -f "${VPATH}/${A}.acr" ]; then
SD_TARGET=${A}
else
if [ -d "${VPATH}/${A}" ]; then
SD_TARGET=${A}/Makefile
mkdir -p ${A}
else
echo "ERROR: Cannot find ${VPATH}/${A}.acr" >&2
exit 1
fi
fi
echo "creating ${SD_TARGET}"
mkdir -p $(echo ${A} | sed -e "s,/`basename ${A}`$,,g")
cat ${VPATH}/${SD_TARGET}.acr | \
eval sed -e "s,@VPATH@,${VPATH}/${A},g" ${SEDFLAGS} > ${SD_TARGET}.tmp
for A in ${ENVWORDS}; do
VALUE=`eval echo "$"${A}`
if [ "$VALUE" = 0 ]; then ## FALSE
MARK="##${A}##"
if [ -n "`grep \"${MARK}\" ${SD_TARGET}.tmp`" ]; then
mv ${SD_TARGET}.tmp ${SD_TARGET}.tmp2
cat ${SD_TARGET}.tmp2 | MARK=$MARK awk 'BEGIN{a=0;}{if($1==ENVIRON["MARK"]){if(a)a=0;else a=1}else{if(!a)print;}}' > ${SD_TARGET}.tmp
fi
fi
done
mv ${SD_TARGET}.tmp ${SD_TARGET} && rm -f ${SD_TARGET}.tmp2
if [ ! $? = 0 ]; then echo Cannot write target file ; control_c ; fi
done
do_remove
echo
echo "Final report:"
for A in PREFIX HAVE_LIB_GMP HAVE_OPENSSL USE_CAPSTONE HAVE_FORK VERSION USE_LIB_ZIP USE_LIB_MAGIC DEBUGGER CC USERCC USEROSTYPE LIL_ENDIAN LIBVERSION ; do # REPORT
eval VAL="\$${A}"
[ -z "${VAL}" ] && VAL="(null)"
echo " - ${A} = ${VAL}"
done