Re: [dpdk-dev] [PATCH v2 2/2] build: add drivers_install_subdir meson option

[Luca Boccassi <bluca@debian.org>]

On Tue, 2018-10-02 at 15:28 +0100, Bruce Richardson wrote:
> On Tue, Oct 02, 2018 at 02:06:46PM +0100, Luca Boccassi wrote:
> > Allow users and packagers to override the default dpdk/drivers
> > subdirectory where the PMDs get installed under $lib.
> > 
> > Signed-off-by: Luca Boccassi <bluca@debian.org>
> > ---
> >  meson.build       | 10 ++++++++--
> >  meson_options.txt |  2 ++
> >  2 files changed, 10 insertions(+), 2 deletions(-)
> > 
> > diff --git a/meson.build b/meson.build
> > index 4bd04b9de3..9f7f17f7fe 100644
> > --- a/meson.build
> > +++ b/meson.build
> > @@ -20,8 +20,14 @@ dpdk_extra_ldflags = []
> >  pver = meson.project_version().split('.')
> >  major_version = '@0@.@1@'.format(pver.get(0), pver.get(1))
> >  
> > -driver_install_path = join_paths(get_option('libdir'), 'dpdk',
> > -	'pmds-' + major_version)
> > +pmd_subdir_opt = get_option('drivers_install_subdir')
> > +if pmd_subdir_opt == 'dpdk/pmds-XX.YY'
> > +	driver_install_path = join_paths(get_option('libdir'),
> > +		'dpdk', 'pmds-' + major_version)
> > +else
> > +	driver_install_path = join_paths(get_option('libdir'),
> > +		pmd_subdir_opt)
> > +endif
> 
> Not sure I like this degree of hard-coding of paths. While meson
> doesn't
> have a string replace function, we can still use "sed" via
> run_command to
> perform some substitution, or else get a little creative using split
> if it
> can be made work. That would allow us to put in e.g "<VERSION>" as a
> generic placeholder in the text.
> 
> /Bruce

Do you mean for the "if pmd_subdir_opt == 'dpdk/pmds-XX.YY'" bit? I can
change that to "== 'dpdk/pmds-<VERSION>'" if you prefer?

-- 
Kind regards,
Luca Boccassi