gettext: AM_GNU_GETTEXT_NEED
13.5.3 AM_GNU_GETTEXT_NEED in ‘gettext.m4’
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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.