clang -O2  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations endian/le64toh.c -o endian/le64toh -D_POSIX_C_SOURCE=202405L  -lm  -lintl
endian/le64toh.c:1:10: fatal error: 'endian.h' file not found
#include <endian.h>
         ^
1 error generated.