package/gnuradio: include TARGET_CFLAGS to the overloaded CFLAGS

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/gnuradio/gnuradio.mk

@@ -36,7 +36,7 @@ GNURADIO_INSTALL_STAGING = YES
 # CFLAGS to decide whether to build the NEON functions or not, and
 # wants to see the string 'armv7' in the CFLAGS.
 ifeq ($(BR2_ARM_CPU_ARMV7A)$(BR2_ARM_CPU_HAS_NEON),yy)
-GNURADIO_CONF_OPTS += -DCMAKE_C_FLAGS="-march=armv7-a"
+GNURADIO_CONF_OPTS += -DCMAKE_C_FLAGS="$(TARGET_CFLAGS) -march=armv7-a"
 endif
 
 # As soon as -mfpu=neon is supported by the compiler, gnuradio will try