Add settings application

Implement settings d-bus interfaces.

Define a settings policy file (this commit checks in an example YAML
based policy), based on which code for a settings manager will be
generated via a python script.
This settings manager composes and places desired settings objects on
the bus.

The policy file can be supplied by a system specific bitbake recipe.

Resolves openbmc/openbmc#1487.

Change-Id: Ice0d3b319d9466824cef323a6915eb20ca5cae5c
Signed-off-by: Deepak Kodihalli <dkodihal@in.ibm.com>
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..6b3191d
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,42 @@
+AC_PREREQ([2.69])
+AC_INIT([phosphor-settingsd], [1.0], [https://github.com/openbmc/phosphor-settingsd/issues])
+AC_LANG([C++])
+AC_CONFIG_HEADERS([config.h])
+AM_INIT_AUTOMAKE([subdir-objects -Wall -Werror foreign dist-xz])
+AM_SILENT_RULES([yes])
+
+AC_PROG_CXX
+AM_PROG_AR
+AC_PROG_INSTALL
+AC_PROG_MAKE_SET
+AM_PATH_PYTHON([2.7], [AC_SUBST([PYTHON], [echo "$PYTHON"])], [AC_MSG_ERROR(
+    [Could not find python-2.7 installed...python-2.7 is required])])
+
+PKG_CHECK_MODULES([PHOSPHOR_DBUS_INTERFACES], [phosphor-dbus-interfaces],,\
+    AC_MSG_ERROR(["Requires phosphor-dbus-interfaces package."]))
+PKG_CHECK_MODULES([SDBUSPLUS], [sdbusplus],,
+    AC_MSG_ERROR(["Requires sdbusplus package."]))
+
+LT_INIT
+
+AX_CXX_COMPILE_STDCXX_14([noext])
+AX_APPEND_COMPILE_FLAGS([-Wall -Werror], [CXXFLAGS])
+
+AC_ARG_VAR(SETTINGS_BUSNAME, [The Dbus busname to own])
+AS_IF([test "x$SETTINGS_BUSNAME" == "x"],\
+    [SETTINGS_BUSNAME="xyz.openbmc_project.Settings"])
+AC_DEFINE_UNQUOTED([SETTINGS_BUSNAME], ["$SETTINGS_BUSNAME"],\
+    [The DBus busname to own])
+
+AC_ARG_VAR(SETTINGS_ROOT, [The settings Dbus root])
+AS_IF([test "x$SETTINGS_ROOT" == "x"],\
+    [SETTINGS_ROOT="/xyz/openbmc_project/settings"])
+AC_DEFINE_UNQUOTED([SETTINGS_ROOT], ["$SETTINGS_ROOT"],\
+    [The settings Dbus root])
+
+AS_IF([test "x$SETTINGS_YAML" == "x"], [SETTINGS_YAML="settings_example.yaml"])
+SETTINGSGEN="$PYTHON $srcdir/settings.py -i $SETTINGS_YAML"
+AC_SUBST(SETTINGSGEN)
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT