rump files missing fatal error on virt qemu riscv

[Pranab Kumar Rout cs21m045]

Hi all,
While building the sculpt for virt_qemu_riscv, I got the following fatal
error.
checking library dependencies...
Library-description file rump.mk is missing
  Library ldso_so_support
    COMPILE  so_support.o
    MERGE    ldso_so_support.lib.a
  Library ld
    CONVERT  ld.symbols.s
    ASSEMBLE ld.symbols.o
    MERGE    ld.abi.so
  Library base
    MERGE    base.lib.a
  Library block_session
    MERGE    block_session.lib.a
  Library config
    MERGE    config.lib.a
  Library file_system
    MERGE    file_system.lib.a
  Library file_system_session
    MERGE    file_system_session.lib.a
  Library os
    MERGE    os.lib.a
  Library rump_tools
    MERGE    rump_tools.lib.a
  Library rump_fs
    COMPILE  autoconf.o
In file included from
/genode/depot/genodelabs/src/rump/2022-11-28/src/lib/dde_rump/src/sys/rump/librump/rumpdev/autoconf.c:28:
genode/depot/genodelabs/src/rump/2022-11-28/src/lib/dde_rump/src/sys/sys/cdefs.h:58:10:
fatal error: machine/cdefs.h: No such file or directory
   58 | #include <machine/cdefs.h>
      |          ^~~~~~~~~~~~~~~~~
compilation terminated.
make[7]: *** [/genode/repos/base/mk/generic.mk:58: autoconf.o] Error 1
make[6]: *** [var/libdeps:187: rump_fs.lib] Error 2
make[5]: *** [Makefile:336: gen_deps_and_build_targets] Error 2
make[4]: *** [genode/tool/depot/mk/build_bin_archive:208:
/genode/depot/genodelabs/bin/riscv/rump/2022-11-28.build/bin] Error 1
make[3]: *** [/genode/depot/var/build.mk:264:
genodelabs/bin/riscv/rump/2022-11-28] Error 2
make[2]: *** [/genode/tool/depot/build:136:
execute_generated_build_mk_file] Error 2
make[1]: *** [/genode/tool/depot/create:59: build] Error 2
make[1]: Leaving directory '/genode/build/riscv'

It seems some ports are not prepared for riscv. Kindly suggest what
files/directories are to be added and which files require changes.

Thanks and regards,
Pranab
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