[Android] How to Enable LOGV?
In the system/core/include/cutils/log.h
It defines the logging macro and tell us how to enable the logger.
We should concern three conditions,
1. For a single file:
You should define LOG_NDEBUG in top of the file,
#define LOG_NDEBUG 0
In addition, you can define the LOG_TAG to specify the module name.
2. For a Library:
You should define the symbol in the LOCAL_CFLAGS in the Android.mk,
LOCAL_CFLAGS += -DLOG_NDEBUG=0
3. For the multiple files:
You should define the symbol in the COMMON_GLOBAL_CFLAGS in the device/{DEVICE}/BoardConfig.mk,
COMMON_GLOBAL_CFLAGS += -DLOG_NDEBUG=0
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