tlbuild: Macros for libraries

 
 6.3.4 Macros for libraries
 --------------------------
 
 One macro for a library check:
 
  -- Macro: KPSE_LARGEFILE (VARIABLE, [EXTRA-DEFINE])
      Call 'AC_SYS_LARGEFILE' and 'AC_FUNC_FSEEKO' and append suitable
      '-D' flags (optionally including '-DEXTRA-DEFINE') to VARIABLE.