NDK编译JNI文件报错implicit declaration of function 'RCCread' is invalid in C99 [-Wimplicit-function-declar

关于JNI报错

I:/AndroidProject/APP4/ledtest/jni/com_topeet_ledtest_ad1256.c:32:14: warning: implicit declaration of function 'RCCread' is invalid in C99 [-Wimplicit-function-declaration]
    status = RCCread(fd,Rxbuf,count);

那是因为JNI一般只能映射read，write，ioctl，open，close函数，使用其他函数名就会编译不通过