Can't include C++ headers like vector in Android NDK

Question

When I try to include any C++ class like vector in my Android NDK project (using NDK r5b, the latest), I get an error like the following...

Compile++ thumb : test-libstl <= test-libstl.cpp /Users/nitrex88/Desktop/Programming/EclipseProjects/STLTest/jni/test-libstl.cpp:3:18: error: vector: No such file or directory

Other people who reported this issue online have claimed success by adding

APP_STL := stlport_static

to their Application.mk file. I have done this as well as tried every other possible value for APP_STL. I've cleaned to project, ran ndk-build clean, deleted the obj and libs folders, and still when I compile it cannot find the vector class. I've been working on this for a number of weeks now (since NDK r5 came out) and would really appreciate if someone has any advice. Thanks!

Answer 1

It is possible. Here is some step by step:

In $PROJECT_DIR/jni/Application.mk:

APP_STL                 := stlport_static 

I tried using stlport_shared, but no luck. Same with libstdc++.

In $PROJECT_DIR/jni/Android.mk:

LOCAL_PATH := $(call my-dir)  include $(CLEAR_VARS)  LOCAL_MODULE    := hello-jni LOCAL_SRC_FILES := hello-jni.cpp LOCAL_LDLIBS    := -llog  include $(BUILD_SHARED_LIBRARY) 

Nothing special here, but make sure your files are .cpp.

In $PROJECT_DIR/jni/hello-jni.cpp:

#include <string.h> #include <jni.h> #include <android/log.h>  #include <iostream> #include <vector>   #define  LOG_TAG    "hellojni" #define  LOGI(...)  __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__) #define  LOGE(...)  __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)   #ifdef __cplusplus extern "C" { #endif  // Comments omitted.     void Java_com_example_hellojni_HelloJni_stringFromJNI( JNIEnv* env,                                                   jobject thiz ) {     std::vector<std::string> vec;      // Go ahead and do some stuff with this vector of strings now. }  #ifdef __cplusplus } #endif 

The only thing that bite me here was #ifdef __cplusplus.

Watch the directories.

To compile, use ndk-build clean && ndk-build.