?

?

#include <utils/CallStack.h>
?? ? #include<utils/Log.h>

?

android::CallStack stack;
?? ? ?stack.update();
?? ? ?stack.dump(1);?
?? ? ?//輸出到printf
?? ? ?stack.log("dsfdsfds");?
?? ? ?//輸出到logcat

?

?

?

: undefined reference to 'android::CallStack::CallStack()'
hardware/interfaces/light/2.0/default/Light.cpp:155: error: undefined reference to 'android::CallStack::update(int, int)'
hardware/interfaces/light/2.0/default/Light.cpp:156: error: undefined reference to 'android::CallStack::dump(int, int, char const*) const'
hardware/interfaces/light/2.0/default/Light.cpp:158: error: undefined reference to 'android::CallStack::log(char const*, android_LogPriority, char const*) const'
hardware/interfaces/light/2.0/default/Light.cpp:180: error: undefined reference to 'android::CallStack::~CallStack()'

?

?

https://stackoverflow.com/questions/55844214/trouble-with-undefined-reference-to-callstack-library

老外還是牛逼的

libutilscallstack

?

"libutils","libcutils",

以前的不好使了

得加libutilscallstack??

確實看makefile就明白了

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