[PATCH v2 2/2] build: add drivers_install_subdir meson option

[Luca Boccassi <bluca@debian.org>]

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
 eal_pmd_path = join_paths(get_option('prefix'), driver_install_path)
 
 # configure the build, and make sure configs here and in config folder are
diff --git a/meson_options.txt b/meson_options.txt
index d14bde892d..d0f5675eb7 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,5 +1,7 @@
 option('allow_invalid_socket_id', type: 'boolean', value: false,
 	description: 'allow out-of-range NUMA socket id\'s for platforms that don\'t report the value correctly')
+option('drivers_install_subdir', type: 'string', value: 'dpdk/pmds-XX.YY',
+	description: 'Subdirectory of libdir where to install PMDs. Defaults to using a versioned subdirectory.')
 option('enable_driver_mlx_glue', type: 'boolean', value: false,
 	description: 'Enable glue library for Mellanox PMDs')
 option('enable_kmods', type: 'boolean', value: true,
-- 
2.19.0