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/qahw_api/Android.mk b/qahw_api/Android.mk
index fa4e6cb..1cad75d 100644
--- a/qahw_api/Android.mk
+++ b/qahw_api/Android.mk
@@ -14,6 +14,12 @@
 LOCAL_SRC_FILES := \
     src/qahw_api.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_SHARED_LIBRARIES := \
     liblog \
     libcutils \
diff --git a/qahw_api/test/Android.mk b/qahw_api/test/Android.mk
index 06e8a5a..cca72f8 100644
--- a/qahw_api/test/Android.mk
+++ b/qahw_api/test/Android.mk
@@ -20,6 +20,12 @@
     libutils \
     libcutils
 
+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_32_BIT_ONLY := true
 
 LOCAL_C_INCLUDES += $(hal-play-inc)