Cannot found libc/machine/arm/libc_a-setjmp.o when building Newlib with Clang 15.0.0

Question

I was building Newlib with my custom LLVM passes.

Problem

When building Newlib, it reported an error:

  AR       libc.a
/mnt/storage/2022DualCoreIsolation/DualCoreIsolationProject/llvm15_0/build/bin/llvm-ar: error: libc/machine/arm/libc_a-setjmp.o: No such file or directory

I checked that the source file setjmp.S exists:

newlib/ $ ls libc/machine/arm/setjmp.S
libc/machine/arm/setjmp.S

But other files are built into .o files. For example, source file libc/machine/arm/memchr-stub.c is compiled into arm-none-eabi/newlib/libc/machine/arm/libc_a-memchr-stub.o

Environmental Settings

The toolchains:

Newlib: tag newlib-4.3.0
LLVM: 15.0.0
arm-none-eabi-gcc: (15:10.3-2021.07-4) 10.3.1 20210621 (release)

The configure options for Newlib:

"$NEWLIB_SRC/configure" --target="arm-none-eabi"                            \
                        --srcdir="$NEWLIB_SRC"                              \
                        --prefix="$NEWLIB_INSTALL"                          \
                        --disable-newlib-supplied-syscalls                  \
                        --with-cpu=armv7m                                   \
                        --with-mode=thumb

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Does someone know how to fix this bug? Thank you in advance!