* doc/autoconf.texi (Conditional constructs) <m4_define_default>: Document it, since gnulib wants to use it. * NEWS: Mention this.
Signed-off-by: Eric Blake <[email protected]> --- I want to use this in gnulib's m4/include_next.m4, and would feel better if it were documented. This is unchanged since at least 2.59. ChangeLog | 5 +++++ NEWS | 2 ++ doc/autoconf.texi | 6 ++++++ 3 files changed, 13 insertions(+), 0 deletions(-) diff --git a/ChangeLog b/ChangeLog index 0be5809..b79692b 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,10 @@ 2010-08-26 Eric Blake <[email protected]> + m4sugar: document m4_define_default + * doc/autoconf.texi (Conditional constructs) <m4_define_default>: + Document it, since gnulib wants to use it. + * NEWS: Mention this. + autoconf: warn if AC_*_IFELSE lacks complete program * lib/autoconf/lang.m4 (AC_LANG_DEFINES_PROVIDED): New macro. (AC_LANG_SOURCE): Call it. diff --git a/NEWS b/NEWS index 9998ab7..6010e7b 100644 --- a/NEWS +++ b/NEWS @@ -15,6 +15,8 @@ GNU Autoconf NEWS - User visible changes. a compelling reason why you cannot use AC_LANG_SOURCE but must avoid the warning. +** The macro m4_define_default is now documented. + * Major changes in Autoconf 2.67 (2010-07-21) [stable] Released by Eric Blake, based on git versions 2.66.*. diff --git a/doc/autoconf.texi b/doc/autoconf.texi index cf0c0a1..996525a 100644 --- a/doc/autoconf.texi +++ b/doc/autoconf.texi @@ -11786,6 +11786,12 @@ Conditional constructs @end example @end defmac +...@defmac m4_define_default (@var{macro}, @ovar{default-definition}) +...@msindex{define_default} +If @var{macro} does not already have a definition, then define it to +...@var{default-definition}. +...@end defmac + @defmac m4_ifblank (@var{cond}, @ovar{if-blank}, @ovar{if-text}) @defmacx m4_ifnblank (@var{cond}, @ovar{if-text}, @ovar{if-blank}) @msindex{ifblank} -- 1.7.2.2
