zephyr compile error

[1/160] Preparing syscall dependency handling

[2/160] Generating include/generated/version.h
-- Zephyr version: 3.4.99 (/home/vrangan/github/litex_work/workspace_zephyr/zephyr), build: zephyr-v3.4.0-2528-g7532b77a2395
[8/160] Building C object zephyr/CMakeFiles/offsets.dir/arch/riscv/core/offsets/offsets.c.obj
FAILED: zephyr/CMakeFiles/offsets.dir/arch/riscv/core/offsets/offsets.c.obj
/usr/bin/riscv64-unknown-elf-gcc -DKERNEL -D__ZEPHYR__=1 -I/home/vrangan/github/litex_work/workspace_zephyr/zephyr/kernel/include -I/home/vrangan/github/litex_work/workspace_zephyr/zephyr/arch/riscv/include -I/home/vrangan/github/litex_work/workspace_zephyr/zephyr/include -I/home/vrangan/github/litex_work/workspace_zephyr/build/zephyr/include/generated -I/home/vrangan/github/litex_work/workspace_zephyr/zephyr/soc/riscv/litex-vexriscv -I/home/vrangan/github/litex_work/workspace_zephyr/zephyr/lib/posix/getopt/. -I/home/vrangan/github/litex_work/workspace_zephyr/modules/lib/acpica/../../zephyr/include -I/home/vrangan/github/litex_work/workspace_zephyr/modules/lib/acpica/.. -I/home/vrangan/github/litex_work/workspace_zephyr/modules/lib/acpica/source/include -I/home/vrangan/github/litex_work/workspace_zephyr/modules/lib/acpica/source/include/platform -I/home/vrangan/github/litex_work/workspace_zephyr/modules/lib/acpica/source/compiler -I/home/vrangan/github/litex_work/workspace_zephyr/modules/lib/acpica/generate/zephyr -I/home/vrangan/github/litex_work/workspace_zephyr/modules/lib/acpica/source/tools/acpiexec -I/home/vrangan/github/litex_work/workspace_zephyr/modules/lib/acpica/source/tools/acpidump -isystem /home/vrangan/github/litex_work/workspace_zephyr/zephyr/lib/libc/minimal/include -isystem /usr/lib/gcc/riscv64-unknown-elf/10.2.0/include -isystem /usr/lib/gcc/riscv64-unknown-elf/10.2.0/include-fixed -fno-strict-aliasing -Os -imacros /home/vrangan/github/litex_work/workspace_zephyr/build/zephyr/include/generated/autoconf.h -ffreestanding -fno-common -g -gdwarf-4 -fdiagnostics-color=always -mabi=ilp32 -march=rv32ima_zicsr_zifencei --sysroot=/usr/usr/lib/arm-none-eabi/newlib/ -imacros /home/vrangan/github/litex_work/workspace_zephyr/zephyr/include/zephyr/toolchain/zephyr_stdint.h -Wall -Wformat -Wformat-security -Wno-format-zero-length -Wno-pointer-sign -Wpointer-arith -Wexpansion-to-defined -Wno-unused-but-set-variable -Werror=implicit-int -fno-pic -fno-pie -fno-asynchronous-unwind-tables -fno-reorder-functions -fno-defer-pop -fmacro-prefix-map=/home/vrangan/github/litex_work/workspace_zephyr/zephyr/samples/subsys/shell/shell_module=CMAKE_SOURCE_DIR -fmacro-prefix-map=/home/vrangan/github/litex_work/workspace_zephyr/zephyr=ZEPHYR_BASE -fmacro-prefix-map=/home/vrangan/github/litex_work/workspace_zephyr=WEST_TOPDIR -ffunction-sections -fdata-sections -D_POSIX_THREADS -std=c99 -nostdinc -MD -MT zephyr/CMakeFiles/offsets.dir/arch/riscv/core/offsets/offsets.c.obj -MF zephyr/CMakeFiles/offsets.dir/arch/riscv/core/offsets/offsets.c.obj.d -o zephyr/CMakeFiles/offsets.dir/arch/riscv/core/offsets/offsets.c.obj -c /home/vrangan/github/litex_work/workspace_zephyr/zephyr/arch/riscv/core/offsets/offsets.c
cc1: error: '-march=rv32ima_zicsr_zifencei': unsupported ISA subset 'z'
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: /usr/bin/cmake --build /home/vrangan/github/litex_work/workspace_zephyr/build
vrangan@ASUS-STRIX-B550:~/github/litex_work$