Build project by CMake, has a problem for use of "undeclared identifier 'nullptr' "

user_8380945 0
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My project use CMake build android-ndk,when I run app to phone,that will appear use of undeclared identifier 'nullptr'

The code is build, for log :

/Users/userName/Desktop/GuideMachine/SDK-Android/app/src/main/cpp/ivw-jni/ivw-jni.cpp:25:35: error: use of undeclared identifier 'nullptr' IvwRes(size_t nSize) : buffer(nullptr), size(nSize) {

android-ndk cmake android
2 Answers

You need to configure C++ 11 support, on the version of compiler you have older one is default, and there nullptr is actually undefined.

user_8282370

If you do not need c++11, it's possible to just add define to compiler: in CMakeLists.txt add

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Dnullptr=0")
user_83662230
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