Android NDK - 命名空间“std”中没有名为“function”的类型

Question

使用 Cocos-2dx 和 Clang 构建时，我在 Android NDK 中不断收到以下错误

jni/../../Classes/Facebook/FacebookConstants.h:44:14: error: no type named 'function' in namespace 'std'
typedef std::function<void()> FacebookLoginCallback;

应用程序.mk

NDK_TOOLCHAIN_VERSION := clang
APP_STL := gnustl_static
APP_CPPFLAGS := -frtti -DCC_ENABLE_CHIPMUNK_INTEGRATION=1 -DCOCOS2D_DEBUG=1

安卓.mk

LOCAL_CFLAGS :=-D__GXX_EXPERIMENTAL_CXX0X__
LOCAL_CPPFLAGS  := -std=c++11
LOCAL_CFLAGS += -std=gnu++11
LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE := game_shared

LOCAL_MODULE_FILENAME := libgame

LOCAL_SRC_FILES := hellocpp/main.cpp \
                   ../../Classes/AppDelegate.cpp \
                   ../../Classes/Facebook/Request.cpp \
                   ../../Classes/FriendListCell.cpp \
                   ../../Classes/Game.cpp \
                   ../../Classes/GameListCell.cpp \
                   ../../Classes/GameListHeaderCell.cpp \
                   ../../Classes/GameScene.cpp \
                   ../../Classes/LoginScene.cpp \
                   ../../Classes/MenuScene.cpp \
                   ../../Classes/NewGameScene.cpp \
                   ../../Classes/Parse/curl/docs/examples/asiohiper.cpp \
                   ../../Classes/Parse/curl/docs/examples/htmltitle.cpp \
                   ../../Classes/Parse/HTTP.cpp \
                   ../../Classes/Parse/lib_json/json_reader.cpp \
                   ../../Classes/Parse/lib_json/json_value.cpp \
                   ../../Classes/Parse/lib_json/json_writer.cpp \
                   ../../Classes/Parse/ParseHTTP.cpp \

LOCAL_C_INCLUDES += $(LOCAL_PATH)/../../Classes \
                      $(LOCAL_PATH)/../../Classes/Parse \
                      $(LOCAL_PATH)/../../Classes/Parse/json \
                      $(LOCAL_PATH)/../../Classes/Parse/lib_json \
                      $(LOCAL_PATH)/../../Classes/Facebook \

LOCAL_WHOLE_STATIC_LIBRARIES := cocos2dx_static cocosdenshion_static cocos_extension_static

include $(BUILD_SHARED_LIBRARY)

$(call import-module,CocosDenshion/android) \
$(call import-module,cocos2dx) \
$(call import-module,extensions)

Answer 1

我认为您没有链接器错误。 你有一个编译器错误。 问题是，您的应用程序中没有提到对 C++11 的支持。 您必须通过在jni文件夹中的Application.mk文件中指定-std=c++11编译器标志（ APP_CPPFLAGS ）来使用 Clang 附带的那个。 即

APP_CPPFLAGS := -frtti -DCC_ENABLE_CHIPMUNK_INTEGRATION=1 -DCOCOS2D_DEBUG=1 -std=c++11

Answer 2

不要忘记将其包含在标题中

#include <functional>

在我的项目 cocos2d-x v3.0.0 中，Android 版本需要它，但 iOS 不需要。 我想它包含在其他地方。

Answer 3

我有同样的问题，并通过执行以下操作来解决它：

在Android.mk文件中，添加

LOCAL_CPP_EXTENSION += .h