libiio: fix build when python bindings are enabled

See https://github.com/openembedded/meta-openembedded/issues/248

Signed-off-by: Sam Van Den Berge <sam.van.den.berge@telenet.be>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-support/libiio/libiio_git.bb

@@ -12,13 +12,15 @@ UPSTREAM_CHECK_GITTAGREGEX = "v(?P<pver>\d+(\.\d+)+)"
 
 S = "${WORKDIR}/git"
 
-inherit cmake python3native systemd
+DISTUTILS_SETUP_PATH ?= "${B}/bindings/python/"
 
 DEPENDS = " \
     flex-native bison-native libaio \
     ${@bb.utils.contains('DISTRO_FEATURES', 'zeroconf', 'avahi', '', d)} \
 "
 
+inherit cmake python3native systemd setuptools3
+
 EXTRA_OECMAKE = " \
     -DCMAKE_BUILD_TYPE=RelWithDebInfo \
     -DUDEV_RULES_INSTALL_DIR=${nonarch_base_libdir}/udev/rules.d \
@@ -31,8 +33,6 @@ PACKAGECONFIG[usb_backend] = "-DWITH_USB_BACKEND=ON,-DWITH_USB_BACKEND=OFF,libus
 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}"
 
 RDEPENDS_${PN}-${PYTHON_PN} = "${PN} ${PYTHON_PN}-ctypes ${PYTHON_PN}-stringold"
@@ -46,3 +46,23 @@ FILES_${PN}-${PYTHON_PN} = "${PYTHON_SITEPACKAGES_DIR}"
 
 SYSTEMD_PACKAGES = "${PN}-iiod"
 SYSTEMD_SERVICE_${PN}-iiod = "iiod.service"
+
+# Explicitly define do_configure, do_compile and do_install because both cmake and setuptools3 have
+# EXPORT_FUNCTIONS do_configure do_compile do_install
+do_configure() {
+    cmake_do_configure
+}
+
+do_compile() {
+    if ${@bb.utils.contains('PACKAGECONFIG', 'libiio-python3', 'true', 'false', d)}; then
+        distutils3_do_compile
+    fi
+    cmake_do_compile
+}
+
+do_install() {
+    if ${@bb.utils.contains('PACKAGECONFIG', 'libiio-python3', 'true', 'false', d)}; then
+        distutils3_do_install
+    fi
+    cmake_do_install
+}