13.4.9 config.h.in at top level

The include file template that holds the C macros to be defined by configure is usually called config.h.in and may be maintained either manually or automatically.

If it is maintained automatically, by use of the ‘autoheader’ program, you need to do nothing about it. This is the case in particular if you are using GNU automake.

If it is maintained manually, you can get away by adding the following lines to config.h.in:

/* Define to 1 if translation of program messages to the user's
   native language is requested. */
#undef ENABLE_NLS