xinetd: add support to use RPC support from libtirpc

XINETD_LICENSE       = xinetd license

XINETD_LICENSE_FILES = COPYRIGHT

ifneq ($(BR2_TOOLCHAIN_HAS_NATIVE_RPC),y)

XINETD_CONF_ENV = CFLAGS="$(TARGET_CFLAGS) -DNO_RPC"

XINETD_CFLAGS = $(TARGET_CFLAGS)

# Three cases here:

#  1. We have libtirpc, use it by passing special flags

#  2. We have native RPC support, use it, no need to pass special

#     flags (so this case 2 is implicit and not visible below)

#  3. We don't have RPC support, pass -DNO_RPC to disable it

ifeq ($(BR2_PACKAGE_LIBTIRPC),y)

XINETD_DEPENDENCIES += libtirpc

XINETD_CFLAGS += -I$(STAGING_DIR)/usr/include/tirpc/

XINETD_LIBS += -ltirpc

else ifeq ($(BR2_TOOLCHAIN_HAS_NATIVE_RPC),)

XINETD_CFLAGS += -DNO_RPC

endif

XINETD_CONF_ENV += \

	CFLAGS="$(XINETD_CFLAGS)" \

	LIBS="$(XINETD_LIBS)"

XINETD_MAKE_OPT = AR="$(TARGET_AR)"

$(eval $(autotools-package))