[PATCH 1/2] build: allow to conditionally build apps

[Bruce Richardson]

On Thu, Oct 13, 2022 at 05:11:38PM +0200, Markus Theil wrote:
> On 10/12/22 17:19, Bruce Richardson wrote:
> > On Wed, Oct 12, 2022 at 04:47:03PM +0200, Markus Theil wrote:
> > > Makes apps configureable from meson, like already
> > > possible for drivers.
> > > 
> > > Signed-off-by: Markus Theil <markus.theil at tu-ilmenau.de>
> > > ---
> > >   app/meson.build   | 17 ++++++++++++-----
> > >   meson_options.txt |  4 ++++
> > >   2 files changed, 16 insertions(+), 5 deletions(-)
> > > 
> > > diff --git a/app/meson.build b/app/meson.build
> > > index 93d8c15032..4d9c8ee814 100644
> > > --- a/app/meson.build
> > > +++ b/app/meson.build
> > > @@ -1,6 +1,9 @@
> > >   # SPDX-License-Identifier: BSD-3-Clause
> > >   # Copyright(c) 2017-2019 Intel Corporation
> > > +enabled_apps = get_option('enable_apps')
> > > +disabled_apps = get_option('disable_apps')
> > > +
> > >   apps = [
> > >           'dumpcap',
> > >           'pdump',
> > > @@ -27,7 +30,11 @@ if get_option('default_library') == 'static' and not is_windows
> > >   endif
> > >   foreach app:apps
> > > -    build = true
> > > +    build = enabled_apps == '' or enabled_apps.contains(app)
> > > +    # let disabled_apps override enabled_apps
> > > +    if disabled_apps != ''
> > > +        build = build and not disabled_apps.contains(app)
> > > +    endif
> > >       name = app
> > >       sources = []
> > >       includes = []
> > > @@ -41,6 +48,10 @@ foreach app:apps
> > >       ext_deps = []
> > >       deps = []
> > > +    if not build
> > > +        continue
> > > +    endif
> > > +
> > >       subdir(name)
> > >       if build
> > > @@ -56,10 +67,6 @@ foreach app:apps
> > >           endforeach
> > >       endif
> > > -    if not build
> > > -        continue
> > > -    endif
> > > -
> > Does this block not still need to be kept? Is it possible that build could
> > be set to false in the subdir or other logic?
> I will move the block to its old position in the next revision. Thanks for
> the hint.

Not sure you need to undo the move, you might just need two copies of the
check. If an app is explicitly disabled, you may want to skip the
"subdir()" call, so having two "if not build" checks would make sense.

/Bruce