[meta-oe][PATCH v3] libiio: add python3 packageconfig

[Martin Siegumfeldt <mns@gomspace.com>]

 * used for enabling python bindings - note that behavior is changed
   from 'opt-out' to 'opt-in'

 * config is used for potentially inheriting distutils3-base

 * also decapitalize packageconfig names similar to other recipes

Signed-off-by: Martin Siegumfeldt <mns@gomspace.com>
---
 meta-oe/recipes-support/libiio/libiio_git.bb | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/meta-oe/recipes-support/libiio/libiio_git.bb b/meta-oe/recipes-support/libiio/libiio_git.bb
index e6e0eaef8..b53ba4647 100644
--- a/meta-oe/recipes-support/libiio/libiio_git.bb
+++ b/meta-oe/recipes-support/libiio/libiio_git.bb
@@ -12,7 +12,7 @@ SRC_URI = "git://github.com/analogdevicesinc/libiio.git;protocol=https"
 
 S = "${WORKDIR}/git"
 
-inherit cmake python3native systemd distutils3-base
+inherit cmake python3native systemd
 
 DEPENDS = " \
     flex-native bison-native libaio \
@@ -25,10 +25,13 @@ EXTRA_OECMAKE = " \
     ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', '-DWITH_SYSTEMD=ON -DSYSTEMD_UNIT_INSTALL_DIR=${systemd_system_unitdir}', '', d)} \
 "
 
-PACKAGECONFIG ??= "USB_BACKEND NETWORK_BACKEND"
+PACKAGECONFIG ??= "usb_backend network_backend"
 
-PACKAGECONFIG[USB_BACKEND] = "-DWITH_USB_BACKEND=ON,-DWITH_USB_BACKEND=OFF,libusb1,libxml2"
-PACKAGECONFIG[NETWORK_BACKEND] = "-DWITH_NETWORK_BACKEND=ON,-DWITH_NETWORK_BACKEND=OFF,libxml2"
+PACKAGECONFIG[usb_backend] = "-DWITH_USB_BACKEND=ON,-DWITH_USB_BACKEND=OFF,libusb1,libxml2"
+PACKAGECONFIG[network_backend] = "-DWITH_NETWORK_BACKEND=ON,-DWITH_NETWORK_BACKEND=OFF,libxml2"
+PACKAGECONFIG[libiio-python3] = "-DPYTHON_BINDINGS=ON,-DPYTHON_BINDINGS=OFF"
+
+inherit ${@bb.utils.contains('PACKAGECONFIG', 'libiio-python3', 'distutils3-base', '', d)}
 
 PACKAGES =+ "${PN}-iiod ${PN}-tests ${PN}-${PYTHON_PN}"
 
-- 
2.17.1