cant find -lm,how to solve it?

[RockyQLuo]

make ARCH=riscv64-xs -j48 (--)(remotes/origin/HEAD!)

Building llama7b [riscv64-xs] with AM_HOME {/home/qluo/tools/xs-env/nexus-am}

• CC main.c
• CC nonlinear.c

Building lib-klib [riscv64-xs]

Building lib-am [riscv64-xs]

• AS src/nemu/common/mainargs.S
• AR -> build/am-riscv64-xs.a

Creating binary image [riscv64-xs]

• LD -> build/llama7b-riscv64-xs.elf
  riscv64-unknown-linux-gnu-ld: warning: /home/qluo/tools/xs-env/nexus-am/apps/llama7b/build/llama7b-riscv64-xs.elf has a LOAD segment with RWX permissions
  riscv64-unknown-linux-gnu-ld: /home/qluo/tools/xs-env/nexus-am/apps/llama7b/build/riscv64-xs//nonlinear.o: in function rmsnorm': /home/qluo/tools/xs-env/nexus-am/apps/llama7b/nonlinear.c:37:(.text+0x68): undefined reference to sqrtf'
  riscv64-unknown-linux-gnu-ld: /home/qluo/tools/xs-env/nexus-am/apps/llama7b/build/riscv64-xs//nonlinear.o: in function softmax': /home/qluo/tools/xs-env/nexus-am/apps/llama7b/nonlinear.c:87:(.text+0x140): undefined reference to expf'
  make: *** [/home/qluo/tools/xs-env/nexus-am/am/arch/riscv64-xs.mk:37: image] Error 1