[PATCH:macros] Add AC_LANG_DEFINES_PROVIDED to XORG_RAW_CPP to silence autoconf warnings

[Alan Coopersmith]

Anyone want to comment or review before I push and cut a macros 1.14.0 release?

	-alan-

On 05/16/11 05:56 PM, Alan Coopersmith wrote:
> Since we're intentionally doing a special case to just check cpp output,
> and not a full program compilation, add the magic macro to silence:
> 
> configure.ac:46: warning: AC_LANG_CONFTEST: no AC_LANG_SOURCE call detected in body
> ../../lib/autoconf/lang.m4:194: AC_LANG_CONFTEST is expanded from...
> aclocal.m4:1077: XORG_PROG_RAWCPP is expanded from...
> configure.ac:46: the top level
> 
> Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>
> ---
>  xorg-macros.m4.in |    6 ++++--
>  1 files changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/xorg-macros.m4.in b/xorg-macros.m4.in
> index f89efb6..a21cf7e 100644
> --- a/xorg-macros.m4.in
> +++ b/xorg-macros.m4.in
> @@ -64,7 +64,8 @@ AC_PATH_PROGS(RAWCPP, [cpp], [${CPP}],
>  # which is not the best choice for supporting other OS'es, but covers most
>  # of the ones we need for now.
>  AC_MSG_CHECKING([if $RAWCPP requires -undef])
> -AC_LANG_CONFTEST([Does cpp redefine unix ?])
> +AC_LANG_CONFTEST([Does cpp redefine unix ?
> +		  AC_LANG_DEFINES_PROVIDED])
>  if test `${RAWCPP} < conftest.$ac_ext | grep -c 'unix'` -eq 1 ; then
>  	AC_MSG_RESULT([no])
>  else
> @@ -82,7 +83,8 @@ fi
>  rm -f conftest.$ac_ext
>  
>  AC_MSG_CHECKING([if $RAWCPP requires -traditional])
> -AC_LANG_CONFTEST([Does cpp preserve   "whitespace"?])
> +AC_LANG_CONFTEST([Does cpp preserve   "whitespace"?
> +		  AC_LANG_DEFINES_PROVIDED])
>  if test `${RAWCPP} < conftest.$ac_ext | grep -c 'preserve   \"'` -eq 1 ; then
>  	AC_MSG_RESULT([no])
>  else


-- 
	-Alan Coopersmith-        alan.coopersmith at oracle.com
	 Oracle Solaris Platform Engineering: X Window System