check_function_exists(fileno HAVE_FILENO)

check_function_exists(fileno HAVE_FILENO)

check_function_exists ( fileno HAVE_FILENO )

check_symbol_exists(fileno "stdio.h" HAVE_FILENO)

target_compile_definitions(${PROJECT_NAME} PRIVATE
    $<$<BOOL:${HAVE_CONFIG_H}>:HAVE_CONFIG_H>
    $<$<BOOL:${HAVE_UNISTD_H}>:HAVE_UNISTD_H>
    $<$<BOOL:${HAVE_GETOPT_H}>:HAVE_GETOPT_H>
    $<$<BOOL:${HAVE_STRING_H}>:HAVE_STRING_H>
    $<$<BOOL:${HAVE_LIBGEN_H}>:HAVE_LIBGEN_H>
    $<$<BOOL:${HAVE_MATH_H}>:HAVE_MATH_H>
    $<$<BOOL:${HAVE_FCNTL_H}>:HAVE_FCNTL_H>
    $<$<BOOL:${HAVE_DIRENT_H}>:HAVE_DIRENT_H>
    $<$<BOOL:${HAVE_SYS_STAT_H}>:HAVE_SYS_STAT_H>
    $<$<BOOL:${HAVE_SYS_TYPES_H}>:HAVE_SYS_TYPES_H>
    $<$<BOOL:${HAVE_SYS_WAIT_H}>:HAVE_SYS_WAIT_H>
    $<$<BOOL:${HAVE_MKSTEMPS}>:HAVE_MKSTEMPS>
    $<$<BOOL:${HAVE_LABS}>:HAVE_LABS>
    $<$<BOOL:${HAVE_FILENO}>:HAVE_FILENO>
    $<$<BOOL:${HAVE_UTIMENSAT}>:HAVE_UTIMENSAT>
    $<$<BOOL:${HAVE_FORK}>:HAVE_FORK>
    $<$<BOOL:${HAVE_WAIT}>:HAVE_WAIT>
    $<$<BOOL:${HAVE_GETOPT}>:HAVE_GETOPT>
    $<$<BOOL:${HAVE_GETOPT_LONG}>:HAVE_GETOPT_LONG>
    $<$<BOOL:${HAVE_STRUCT_STAT_ST_MTIM}>:HAVE_STRUCT_STAT_ST_MTIM>
)