[maemo-developers] How to detect Maemo in automake?

[From: Ross Burton]

On Wed, 2008-02-20 at 08:37 -0500, Levi Bard wrote:
> >  Now for my next question: How do i detect maemo correctly in autoconf? I'd
> >  like to port a project and add some maemo specific options but don't like to
> >  do non-portable changes.
> 
> One way is:
> AC_ARG_ENABLE(maemo,        [  --enable-maemo           Enable
> Maemo-specific build options],
> 	                   [enable_maemo=true],
> 			   [enable_maemo=false])
> 
> if test x"$enable_maemo" = xtrue; then
>     #Do stuff
> fi

That snippet enables maemo support if you pass --disable-maemo. The 3rd
option is evaluated if there is an option specified, so you end up
replacing the existing enable_maemo=no with enable_maemo=true.

You mean something like this:

AC_ARG_ENABLE(maemo,
  AS_HELP_STRING([--enable-maemo],[enable Maemo-specific features]),
  [],
  enable_maemo=no)
if test x"$enable_maemo" = xyes; then
...
fi

The manual explains how AC_ARG_ENABLE works:

http://www.gnu.org/software/autoconf/manual/html_node/Package-Options.html

I also think that this should be --with instead of --enable (because
Maemo is external software, not an optional feature).

Ross
-- 
Ross Burton                                 mail: ross at burtonini.com
                                          jabber: ross at burtonini.com
                                     www: http://www.burtonini.com./
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