package/zmqpp: use BR2_ENABLE_RUNTIME_DEBUG iso BR2_ENABLE_DEBUG

BR2_ENABLE_DEBUG should just steer the availability of debug symbols and
should have no negative effect on performance.

Introduction of 'assert' statements, 'debug'-type builds with additional
logging, etc. should be steered by BR2_ENABLE_RUNTIME_DEBUG instead.

Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/zmqpp/zmqpp.mk

@@ -19,7 +19,7 @@ ZMQPP_LDFLAGS = $(TARGET_LDFLAGS) -lpthread
 # -ffast-math -finline-functions -fomit-frame-pointer are disabled,
 # so only set CONFIG for the non-affected cases.
 ifneq ($(BR2_or1k):$(BR2_TOOLCHAIN_GCC_AT_LEAST_6),y:)
-ZMQPP_CONFIG = $(if $(BR2_ENABLE_DEBUG),buildroot,release)
+ZMQPP_CONFIG = $(if $(BR2_ENABLE_RUNTIME_DEBUG),buildroot,release)
 endif
 
 ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)