I’m building the llvm-18.1.3 and facing the all warnings being treated as errors error as follows:

/home/pi/llvm-project-llvmorg-18.1.3/libc/src/stdlib/bsearch.cpp:16:28: error: ‘void* __llvm_libc_18_1_3_::bsearch(const void*, const void*, size_t, size_t, int (*)(const void*, const void*))’ aliased to external symbol ‘bsearch’
   16 | LLVM_LIBC_FUNCTION(void *, bsearch,
      |                            ^~~~~~~
/home/pi/llvm-project-llvmorg-18.1.3/libc/src/__support/common.h:28:34: note: in definition of macro ‘LLVM_LIBC_FUNCTION_IMPL’
   28 |   decltype(LIBC_NAMESPACE::name) name [[gnu::alias(#name)]];                   
      |                                  ^~~~
/home/pi/llvm-project-llvmorg-18.1.3/libc/src/stdlib/bsearch.cpp:16:1: note: in expansion of macro ‘LLVM_LIBC_FUNCTION’
   16 | LLVM_LIBC_FUNCTION(void *, bsearch,
      | ^~~~~~~~~~~~~~~~~~
/home/pi/llvm-project-llvmorg-18.1.3/libc/src/stdlib/bsearch.cpp:16:28: error: ‘void* __llvm_libc_18_1_3_::bsearch(const void*, const void*, size_t, size_t, int (*)(const void*, const void*))’ specifies less restrictive attribute than its target ‘void* bsearch(const void*, const void*, size_t, size_t, __compar_fn_t)’: ‘nonnull’ [-Werror=missing-attributes]
   16 | LLVM_LIBC_FUNCTION(void *, bsearch,
      |                            ^~~~~~~
/home/pi/llvm-project-llvmorg-18.1.3/libc/src/__support/common.h:28:34: note: in definition of macro ‘LLVM_LIBC_FUNCTION_IMPL’
   28 |   decltype(LIBC_NAMESPACE::name) name [[gnu::alias(#name)]];                   
      |                                  ^~~~
/home/pi/llvm-project-llvmorg-18.1.3/libc/src/stdlib/bsearch.cpp:16:1: note: in expansion of macro ‘LLVM_LIBC_FUNCTION’
   16 | LLVM_LIBC_FUNCTION(void *, bsearch,
      | ^~~~~~~~~~~~~~~~~~
In file included from /usr/include/stdlib.h:846,
                 from /usr/include/c++/12/cstdlib:75,
                 from /usr/include/c++/12/stdlib.h:36,
                 from /home/pi/llvm-project-llvmorg-18.1.3/libc/src/stdlib/bsearch.h:12,
                 from /home/pi/llvm-project-llvmorg-18.1.3/libc/src/stdlib/bsearch.cpp:9:
/usr/include/arm-linux-gnueabihf/bits/stdlib-bsearch.h:20:1: note: ‘void* __llvm_libc_18_1_3_::bsearch(const void*, const void*, size_t, size_t, int (*)(const void*, const void*))’ target declared here
   20 | bsearch (const void *__key, const void *__base, size_t __nmemb, size_t __size,
      | ^~~~~~~
cc1plus: all warnings being treated as errors

So, I’ve added set(CMAKE_COMPILE_WARNING_AS_ERROR OFF) line to the end of the file libc/src/stdlib/CMakeLists.txt as follow:

…
if(LIBC_TARGET_ARCHITECTURE_IS_GPU)
  add_entrypoint_object(
    malloc
    ALIAS
    DEPENDS
      .${LIBC_TARGET_OS}.malloc
  )

  add_entrypoint_object(
    free
    ALIAS
    DEPENDS
      .${LIBC_TARGET_OS}.free
  )
endif()

set(CMAKE_COMPILE_WARNING_AS_ERROR OFF)

Then, I built again, however, this error continues.
What is my fixing wrong and how can I fix this build breaking?