With the introduction of the ubus notifications, we would now fail building
dnsmasq with external toolchains that don't automatically search for headers.
Pass TARGET_CPPFLAGS to the Makefile to resolve that.
Fixes: 34a206bc1194 ("dnsmasq: add ubus notifications for new leases")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
MAKE_FLAGS := \
$(TARGET_CONFIGURE_OPTS) \
- CFLAGS="$(TARGET_CFLAGS)" \
+ CFLAGS="$(TARGET_CFLAGS) $(TARGET_CPPFLAGS)" \
LDFLAGS="$(TARGET_LDFLAGS)" \
COPTS="$(COPTS)" \
PREFIX="/usr"