Fail to build from sources on riscv64gc machine

[moui0]

The config.guess file contained in source tarball is too old that it cannot guess build type on riscv64. It can be updated by executing autoreconf -fiv.

Full configure error output:

checking build system type... ../config.guess: unable to guess system type

This script, last modified 2002-09-03, 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

    ftp://ftp.gnu.org/pub/gnu/config/

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 = 2002-09-03

uname -m = riscv64
uname -r = 5.15.10+
uname -s = Linux
uname -v = #1 SMP Fri Dec 24 14:24:27 CST 2021

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

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

UNAME_MACHINE = riscv64
UNAME_RELEASE = 5.15.10+
UNAME_SYSTEM  = Linux
UNAME_VERSION = #1 SMP Fri Dec 24 14:24:27 CST 2021
configure: error: cannot guess build type; you must specify one

[stevenmeker]

I've made your suggested change in Alpha152 however I don't have a RISC-V machine to test on. If this fixed the problem, feel free to close the issue.