dbus-python: add host package

This can be useful for Python scripts running on a host machine that
need to connect to a bus on a remote device, e.g. test scripts.

The target dbus-python depends on dbus instead of selecting it because
dbus has dependencies that check that it is supported. Using 'select'
would override those dependencies. For host-dbus, there are no such
checks -- it's assumed the host has the features neeeded to run dbus, so
it is okay to just depend on host-dbus.

The pyexpat dependency is not needed, as it is forced on for
host-python.

Signed-off-by: Brent Generous <bgenerous@impinj.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/Config.in.host

@@ -10,6 +10,7 @@ menu "Host utilities"
 	source "package/cmake/Config.in.host"
 	source "package/cramfs/Config.in.host"
 	source "package/cryptsetup/Config.in.host"
+	source "package/dbus-python/Config.in.host"
 	source "package/dfu-util/Config.in.host"
 	source "package/dos2unix/Config.in.host"
 	source "package/dosfstools/Config.in.host"

package/dbus-python/Config.in.host

@@ -0,0 +1,6 @@
+config BR2_PACKAGE_HOST_DBUS_PYTHON
+	bool "host dbus-python"
+	help
+	  Python bindings for D-Bus
+
+	  http://dbus.freedesktop.org/doc/dbus-python/

package/dbus-python/dbus-python.mk

@@ -12,6 +12,9 @@ DBUS_PYTHON_LICENSE_FILES = COPYING
 DBUS_PYTHON_DEPENDENCIES = dbus-glib
 DBUS_PYTHON_CONF_OPTS = --disable-html-docs --disable-api-docs
 
+HOST_DBUS_PYTHON_DEPENDENCIES = host-dbus-glib
+HOST_DBUS_PYTHON_CONF_OPTS = --disable-html-docs --disable-api-docs
+
 ifeq ($(BR2_PACKAGE_PYTHON),y)
 DBUS_PYTHON_DEPENDENCIES += python host-python
 
@@ -19,6 +22,13 @@ DBUS_PYTHON_CONF_ENV += \
 	PYTHON=$(HOST_DIR)/bin/python2 \
 	PYTHON_INCLUDES="`$(STAGING_DIR)/usr/bin/python2-config --includes`" \
 	PYTHON_LIBS="`$(STAGING_DIR)/usr/bin/python2-config --ldflags`"
+
+HOST_DBUS_PYTHON_DEPENDENCIES += host-python
+
+HOST_DBUS_PYTHON_CONF_ENV += \
+	PYTHON=$(HOST_DIR)/bin/python2 \
+	PYTHON_INCLUDES="`$(HOST_DIR)/usr/bin/python2-config --includes`" \
+	PYTHON_LIBS="`$(HOST_DIR)/usr/bin/python2-config --ldflags`"
 else
 DBUS_PYTHON_DEPENDENCIES += python3 host-python3
 
@@ -26,6 +36,14 @@ DBUS_PYTHON_CONF_ENV += \
 	PYTHON=$(HOST_DIR)/bin/python3 \
 	PYTHON_INCLUDES="`$(STAGING_DIR)/usr/bin/python3-config --includes`" \
 	PYTHON_LIBS="`$(STAGING_DIR)/usr/bin/python3-config --ldflags`"
+
+HOST_DBUS_PYTHON_DEPENDENCIES += host-python3
+
+HOST_DBUS_PYTHON_CONF_ENV += \
+	PYTHON=$(HOST_DIR)/bin/python3 \
+	PYTHON_INCLUDES="`$(HOST_DIR)/usr/bin/python3-config --includes`" \
+	PYTHON_LIBS="`$(HOST_DIR)/usr/bin/python3-config --ldflags`"
 endif
 
 $(eval $(autotools-package))
+$(eval $(host-autotools-package))