gettext: AM_GNU_GETTEXT_NEED

 
 13.5.3 AM_GNU_GETTEXT_NEED in ‘gettext.m4’
 ------------------------------------------
 
    The ‘AM_GNU_GETTEXT_NEED’ macro declares a constraint regarding the
 GNU gettext implementation.  The syntax is
 
      AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
 
    If NEEDSYMBOL is ‘need-ngettext’, then GNU gettext implementations
 (in libc or libintl) without the ‘ngettext()’ function will be ignored.
 If NEEDSYMBOL is ‘need-formatstring-macros’, then GNU gettext
 implementations that don’t support the ISO C 99 ‘<inttypes.h>’
 formatstring macros will be ignored.
 
    The optional second argument of ‘AM_GNU_GETTEXT’ is also taken into
 account.
 
    The ‘AM_GNU_GETTEXT_NEED’ invocations can occur before or after the
 ‘AM_GNU_GETTEXT’ invocation; the order doesn’t matter.