audio: Add flags to makefiles

Enable GCOV if config is set to true. Also
add gcov_flush in source files to get enhanced
code coverage.

Change-Id: I39776cc6d6f16cd23da05b66669eea22fc4cba81
Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>
diff --git a/mm-audio/aenc-evrc/qdsp6/Android.mk b/mm-audio/aenc-evrc/qdsp6/Android.mk
index 98b1fe9..76ed6be 100644
--- a/mm-audio/aenc-evrc/qdsp6/Android.mk
+++ b/mm-audio/aenc-evrc/qdsp6/Android.mk
@@ -39,6 +39,12 @@
 LOCAL_SRC_FILES         := src/aenc_svr.c
 LOCAL_SRC_FILES         += src/omx_evrc_aenc.cpp
 
+ifeq ($(strip $(AUDIO_FEATURE_ENABLED_GCOV)),true)
+LOCAL_CFLAGS += --coverage -fprofile-arcs -ftest-coverage
+LOCAL_CPPFLAGS += --coverage -fprofile-arcs -ftest-coverage
+LOCAL_STATIC_LIBRARIES += libprofile_rt
+endif
+
 LOCAL_C_INCLUDES += $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr/include
 LOCAL_C_INCLUDES += $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr/techpack/audio/include
 LOCAL_ADDITIONAL_DEPENDENCIES += $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr