Re: [gentoo-devhelp] Re: Mutually exclusive USE flags

[Mike Frysinger]

On Sunday 31 January 2010 11:18:47 Nikos Chantziaras wrote:
> In pkg_setup():
>
>    if use alsa && use oss ; then
>      einfo
>      ewarn "You have enabled both the \"alsa\" as well as the \"oss\" USE
>            flags. It"
>      ewarn "is not possible to build mozilla-firefox or xulrunner with
>             support for"
>      ewarn "both. ALSA will be used in this case. If you want OSS
>             support, unset the"
>      ewarn "\"alsa\" USE flag and leave only \"oss\" set."
>    fi

i personally use terse messages like:
	You have USE='oss alsa'.  It is not possible to use both, so
	ALSA has been selected by default.
i figure the end user can figure out the rest.  up to you of course.

> In src_configure():
>
>    # Enable/Disable audio in firefox
>    if use alsa || use oss ; then
>      mozconfig_annotate '' --enable-ogg
>      mozconfig_annotate '' --enable-wave
>    fi
>
>
> In this last one, I'm not sure how to pass something to the first
> argument of mozconfig_annotate.  The original was:
>
>    mozconfig_use_enable alsa ogg
>
> which translates into:
>
>    mozconfig_annotate 'alsa' --enable-ogg
>
> The point is that the user will see which USE flags are responsible for
> "--enable-*" and "--disable-*" options.  Unfortunately, this:
>
>    mozconfig_use_enable ( alsa || oss ) ogg
>
> is not possible.  Should I therefore write the block twice in a nested
> if block or leave it as is (and losing the information about which USE
> flag resulted in "--enable-ogg|wave"?)

wouldnt these make more sense behind USE=ogg and USE=wav ?
-mike