libmetalink fails to configure on Linux: error: cannot guess build type; you must specify one

[barracuda156]

--->  Configuring libmetalink
checking build system type... ./config.guess: unable to guess system type

This script, last modified 2014-03-23, has failed to recognize
the operating system you are using. It is advised that you
download the most up to date version of the config scripts from

  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
and
  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD

If the version you run (./config.guess) is already up to date, please
send the following data and any information you think might be
pertinent to <config-patches@gnu.org> in order to provide the needed
information to handle your system.

config.guess timestamp = 2014-03-23

uname -m = riscv64
uname -r = 5.15.131
uname -s = Linux
uname -v = #1 SMP Thu Sep 21 04:12:12 UTC 2023

/usr/bin/uname -p = 
/bin/uname -X     = 

hostinfo               = 
/bin/universe          = 
/usr/bin/arch -k       = 
/bin/arch              = 
/usr/bin/oslevel       = 
/usr/convex/getsysinfo = 

UNAME_MACHINE = riscv64
UNAME_RELEASE = 5.15.131
UNAME_SYSTEM  = Linux
UNAME_VERSION = #1 SMP Thu Sep 21 04:12:12 UTC 2023
configure: error: cannot guess build type; you must specify one
Command failed:  cd "/opt/local/var/macports/build/_home_svacchanda_powerpc-ports_net_libmetalink/libmetalink/work/libmetalink-0.1.3" && ./configure --prefix=/opt/local --with-libexpat --without-libxml2 --disable-xmltest 
Exit code: 1
Error: Failed to configure libmetalink: consult /opt/local/var/macports/build/_home_svacchanda_powerpc-ports_net_libmetalink/libmetalink/work/libmetalink-0.1.3/config.log
Error: Failed to configure libmetalink: configure failure: command execution failed

This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by libmetalink configure 0.1.3, which was
generated by GNU Autoconf 2.69.  Invocation command line was

  $ ./configure --prefix=/opt/local --with-libexpat --without-libxml2 --disable-xmltest

## --------- ##
## Platform. ##
## --------- ##

hostname = pinetabv
uname -m = riscv64
uname -r = 5.15.131
uname -s = Linux
uname -v = #1 SMP Thu Sep 21 04:12:12 UTC 2023

/usr/bin/uname -p = unknown
/bin/uname -X     = unknown

/bin/arch              = unknown
/usr/bin/arch -k       = unknown
/usr/convex/getsysinfo = unknown
/usr/bin/hostinfo      = unknown
/bin/machine           = unknown
/usr/bin/oslevel       = unknown
/bin/universe          = unknown

PATH: /opt/local/bin
PATH: /opt/local/sbin
PATH: /bin
PATH: /sbin
PATH: /usr/bin
PATH: /usr/sbin


## ----------- ##
## Core tests. ##
## ----------- ##

configure:2384: checking build system type
configure:2393: error: cannot guess build type; you must specify one

## ---------------- ##
## Cache variables. ##
## ---------------- ##

ac_cv_env_CC_set=set
ac_cv_env_CC_value=/usr/bin/clang
ac_cv_env_CFLAGS_set=set
ac_cv_env_CFLAGS_value='-pipe -Os'
ac_cv_env_CPPFLAGS_set=set
ac_cv_env_CPPFLAGS_value=-isystem/opt/local/include
ac_cv_env_CPP_set=
ac_cv_env_CPP_value=
ac_cv_env_CUNIT_CFLAGS_set=
ac_cv_env_CUNIT_CFLAGS_value=
ac_cv_env_CUNIT_LIBS_set=
ac_cv_env_CUNIT_LIBS_value=
ac_cv_env_EXPAT_CFLAGS_set=
ac_cv_env_EXPAT_CFLAGS_value=
ac_cv_env_EXPAT_LIBS_set=
ac_cv_env_EXPAT_LIBS_value=
ac_cv_env_LDFLAGS_set=set
ac_cv_env_LDFLAGS_value='-L/opt/local/lib -Wl,--enable-new-dtags -Wl,-rpath,/opt/local/lib'
ac_cv_env_LIBS_set=
ac_cv_env_LIBS_value=
ac_cv_env_PKG_CONFIG_LIBDIR_set=
ac_cv_env_PKG_CONFIG_LIBDIR_value=
ac_cv_env_PKG_CONFIG_PATH_set=
ac_cv_env_PKG_CONFIG_PATH_value=
ac_cv_env_PKG_CONFIG_set=
ac_cv_env_PKG_CONFIG_value=
ac_cv_env_build_alias_set=
ac_cv_env_build_alias_value=
ac_cv_env_host_alias_set=
ac_cv_env_host_alias_value=
ac_cv_env_target_alias_set=
ac_cv_env_target_alias_value=

## ----------------- ##
## Output variables. ##
## ----------------- ##

ACLOCAL=''
AMDEPBACKSLASH=''
AMDEP_FALSE=''
AMDEP_TRUE=''
AMTAR=''
AM_BACKSLASH=''
AM_DEFAULT_V=''
AM_DEFAULT_VERBOSITY=''
AM_V=''
AR=''
AUTOCONF=''
AUTOHEADER=''
AUTOMAKE=''
AWK=''
CC='/usr/bin/clang'
CCDEPMODE=''
CFLAGS='-pipe -Os'
CPP=''
CPPFLAGS='-isystem/opt/local/include'
CUNIT_CFLAGS=''
CUNIT_LIBS=''
CYGPATH_W=''
DEFS=''
DEPDIR=''
DLLTOOL=''
DSYMUTIL=''
DUMPBIN=''
ECHO_C=''
ECHO_N='-n'
ECHO_T=''
EGREP=''
ENABLE_LIBEXPAT_FALSE=''
ENABLE_LIBEXPAT_TRUE=''
ENABLE_LIBXML2_FALSE=''
ENABLE_LIBXML2_TRUE=''
EXEEXT=''
EXPAT_CFLAGS=''
EXPAT_LIBS=''
FGREP=''
GREP=''
HAVE_CUNIT_FALSE=''
HAVE_CUNIT_TRUE=''
HAVE_STRPTIME_FALSE=''
HAVE_STRPTIME_TRUE=''
HAVE_TIMEGM_FALSE=''
HAVE_TIMEGM_TRUE=''
INSTALL_DATA=''
INSTALL_PROGRAM=''
INSTALL_SCRIPT=''
INSTALL_STRIP_PROGRAM=''
LD=''
LDFLAGS='-L/opt/local/lib -Wl,--enable-new-dtags -Wl,-rpath,/opt/local/lib'
LIBOBJS=''
LIBS=''
LIBTOOL=''
LIPO=''
LN_S=''
LTLIBOBJS=''
LT_AGE=''
LT_CURRENT=''
LT_REVISION=''
MAJOR_VERSION=''
MAKEINFO=''
MANIFEST_TOOL=''
MINOR_VERSION=''
MKDIR_P=''
NM=''
NMEDIT=''
NUMBER_VERSION=''
OBJDUMP=''
OBJEXT=''
OTOOL64=''
OTOOL=''
PACKAGE=''
PACKAGE_BUGREPORT='t-tujikawa@users.sourceforge.net'
PACKAGE_NAME='libmetalink'
PACKAGE_STRING='libmetalink 0.1.3'
PACKAGE_TARNAME='libmetalink'
PACKAGE_URL=''
PACKAGE_VERSION='0.1.3'
PATCH_VERSION=''
PATH_SEPARATOR=':'
PKG_CONFIG=''
PKG_CONFIG_LIBDIR=''
PKG_CONFIG_PATH=''
RANLIB=''
SED=''
SET_MAKE=''
SHELL='/bin/sh'
STRIP=''
VERSION=''
XML2_CONFIG=''
XML_CPPFLAGS=''
XML_LIBS=''
ac_ct_AR=''
ac_ct_CC=''
ac_ct_DUMPBIN=''
am__EXEEXT_FALSE=''
am__EXEEXT_TRUE=''
am__fastdepCC_FALSE=''
am__fastdepCC_TRUE=''
am__include=''
am__isrc=''
am__leading_dot=''
am__nodep=''
am__quote=''
am__tar=''
am__untar=''
bindir='${exec_prefix}/bin'
build=''
build_alias=''
build_cpu=''
build_os=''
build_vendor=''
datadir='${datarootdir}'
datarootdir='${prefix}/share'
docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
dvidir='${docdir}'
exec_prefix='NONE'
host=''
host_alias=''
host_cpu=''
host_os=''
host_vendor=''
htmldir='${docdir}'
includedir='${prefix}/include'
infodir='${datarootdir}/info'
install_sh=''
libdir='${exec_prefix}/lib'
libexecdir='${exec_prefix}/libexec'
localedir='${datarootdir}/locale'
localstatedir='${prefix}/var'
mandir='${datarootdir}/man'
mkdir_p=''
oldincludedir='/usr/include'
pdfdir='${docdir}'
prefix='/opt/local'
program_transform_name='s,x,x,'
psdir='${docdir}'
sbindir='${exec_prefix}/sbin'
sharedstatedir='${prefix}/com'
sysconfdir='${prefix}/etc'
target=''
target_alias=''
target_cpu=''
target_os=''
target_vendor=''

## ----------- ##
## confdefs.h. ##
## ----------- ##

/* confdefs.h */
#define PACKAGE_NAME "libmetalink"
#define PACKAGE_TARNAME "libmetalink"
#define PACKAGE_VERSION "0.1.3"
#define PACKAGE_STRING "libmetalink 0.1.3"
#define PACKAGE_BUGREPORT "t-tujikawa@users.sourceforge.net"
#define PACKAGE_URL ""

configure: exit 1