undefined reference to `__android_log_print'

原因：没有加入支持的共享库

出错时：

Android.mk

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE??? := testlog
LOCAL_SRC_FILES := testlog.c

include $(BUILD_SHARED_LIBRARY)

?

.c的头文件

#include <string.h>
#include <jni.h>
#include <android/log.h>

?

调试好的：

Android.mk

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE??? := testlog
LOCAL_SRC_FILES := testlog.c
LOCAL_LDLIBS??? := -llog
include $(BUILD_SHARED_LIBRARY)

.c的头文件

#include <string.h>
#include <jni.h>
#include <android/log.h>