add_header_library(
  clock_gettime
  HDRS
    clock_gettime.h
  DEPENDS
    libc.include.sys_syscall
    libc.hdr.types.struct_timespec
    libc.hdr.types.clockid_t
    libc.src.__support.common
    libc.src.__support.error_or
    libc.src.__support.OSUtil.osutil
)

add_header_library(
  clock_conversion
  HDRS
    clock_conversion.h
  DEPENDS
    .clock_gettime
    libc.src.__support.time.units
)

add_header_library(
  abs_timeout
  HDRS
    abs_timeout.h
  DEPENDS
    libc.hdr.types.struct_timespec
    libc.src.__support.time.units
    libc.src.__support.CPP.expected
)

add_header_library(
  monotonicity
  HDRS
    monotonicity.h
  DEPENDS
    .clock_conversion
    .abs_timeout
    libc.hdr.time_macros
)