On 2015-04-09 08:16, Paul Eggleton wrote:
Hi Gary,
On Thursday 09 April 2015 07:45:47 Gary Thomas wrote:
I'm trying to extend PACKAGECONFIG for a recipe (vlc). The
main recipe contains this:
PACKAGECONFIG ?= " live555"
PACKAGECONFIG[mad] = "--enable-mad,--disable-mad,libmad"
PACKAGECONFIG[a52] = "--enable-a52,--disable-a52,liba52"
PACKAGECONFIG[jack] = "--enable-jack,--disable-jack,jack"
PACKAGECONFIG[live555] = "--enable-live555,--disable-live555,live555"
PACKAGECONFIG[libass] = "--enable-libass,--disable-libass,libass"
PACKAGECONFIG[mkv] = "--enable-mkv,--disable-mkv,libmatroska libebml"
PACKAGECONFIG[postproc] =
"--enable-postproc,--disable-postproc,libpostproc" PACKAGECONFIG[opencv] =
"--enable-opencv,--disable-opencv,opencv" PACKAGECONFIG[libva] =
"--enable-libva --enable-avcodec,--disable-libva --disable-avcodec,libva
libav"
I'd like to only add "libva" to the default, so I wrote this
in my local.conf:
PACKAGECONFIG_pn-vlc_append = " libva"
Inspecting it
$ bitbake vlc -e | grep ^PACKAGECONFIG
PACKAGECONFIG=" libva"
Oops. Just to be sure, I tried
PACKAGECONFIG_pn-vlc = "live555 libva"
which gives
$ bitbake vlc -e | grep ^PACKAGECONFIG
PACKAGECONFIG="live555 libva"
Note: I tried
PACKAGECONFIG_append_pn-vlc = " libva"
which does work. However, I've also used
PACKAGECONFIG_pn-chromium_append = " component-build"
for a different recipe that does work... VERY CONFUSED
What am I doing wrong? How do I correctly add to the default list?
In general, for a conditional append, you must use _append_<override> - the
other way around will not do an append, AFAIK it will just set the value.
There are some other valid options that you didn't mention above:
1) Set it outright to list all of the options you want instead of appending.
At least you know exactly what is going into the value. (I know some people
don't like this.)
2) Set it using += or _append from a bbappend.
Thanks for the explanation - I'll make sure to use the correct
form from now on (and fix my incorrect uses for chromium!)
--
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Gary Thomas | Consulting for the
MLB Associates | Embedded world
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