'std' does not name a template type异常

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我是靠谱客的博主高高电脑，最近开发中收集的这篇文章主要介绍'std' does not name a template type异常，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

./cf_libs/common/feature_channels.hpp:90:21: error: 'shared_ptr' in namespace 'std' does not name a template type
         static std::shared_ptr<FeatureChannels_> dftFeatures(
                     ^
./cf_libs/common/feature_channels.hpp:101:21: error: 'shared_ptr' in namespace 'std' does not name a template type
         static std::shared_ptr<FeatureChannels_> idftFeatures(
                     ^
./cf_libs/common/feature_channels.hpp:112:52: error: 'shared_ptr' in namespace 'std' does not name a template type
         static T squaredNormFeaturesCcs(const std::shared_ptr<FeatureChannels_>& Af)
                                                    ^
./cf_libs/common/feature_channels.hpp:112:62: error: expected ',' or '...' before '<' token
         static T squaredNormFeaturesCcs(const std::shared_ptr<FeatureChannels_>& Af)
                                                              ^
./cf_libs/common/feature_channels.hpp:132:54: error: 'shared_ptr' in namespace 'std' does not name a template type
         static T squaredNormFeaturesNoCcs(const std::shared_ptr<FeatureChannels_>& Af)
                                                      ^
./cf_libs/common/feature_channels.hpp:132:64: error: expected ',' or '...' before '<' token
         static T squaredNormFeaturesNoCcs(const std::shared_ptr<FeatureChannels_>& Af)
                                                                ^
./cf_libs/common/feature_channels.hpp:147:21: error: 'shared_ptr' in namespace 'std' does not name a template type
         static std::shared_ptr<FeatureChannels_> mulSpectrumsFeatures(const std::shared_ptr<FeatureChannels_>& Af,
                     ^
./cf_libs/common/feature_channels.hpp:159:21: error: 'shared_ptr' in namespace 'std' does not name a template type
         static std::shared_ptr<FeatureChannels_> mulSpectrumsFeatures(const cv::Mat& Af,
                     ^
./cf_libs/common/feature_channels.hpp: In static member function 'static void cf_tracking::FeatureChannels_<NUMBER_OF_CHANNELS, T>::mulValueFeatures(int)':
./cf_libs/common/feature_channels.hpp:55:17: error: 'm' was not declared in this scope
                 m->channels[i] *= value;
                 ^
./cf_libs/common/feature_channels.hpp:55:35: error: 'value' was not declared in this scope
                 m->channels[i] *= value;
                                   ^
./cf_libs/common/feature_channels.hpp: In static member function 'static void cf_tracking::FeatureChannels_<NUMBER_OF_CHANNELS, T>::addFeatures(int)':
./cf_libs/common/feature_channels.hpp:62:17: error: 'A' was not declared in this scope
                 A->channels[i] += B->channels[i];
                 ^
./cf_libs/common/feature_channels.hpp:62:35: error: 'B' was not declared in this scope
                 A->channels[i] += B->channels[i];
                                   ^
./cf_libs/common/feature_channels.hpp: In static member function 'static cv::Mat cf_tracking::FeatureChannels_<NUMBER_OF_CHANNELS, T>::sumFeatures(int)':
./cf_libs/common/feature_channels.hpp:67:27: error: 'x' was not declared in this scope
             cv::Mat res = x->channels[0].clone();
                           ^
./cf_libs/common/feature_channels.hpp: In static member function 'static cv::Mat cf_tracking::FeatureChannels_<NUMBER_OF_CHANNELS, T>::sumFeaturesInPlace(int)':
./cf_libs/common/feature_channels.hpp:78:17: error: 'x' was not declared in this scope
                 x->channels[0] += x->channels[i];
                 ^
./cf_libs/common/feature_channels.hpp:80:20: error: 'x' was not declared in this scope
             return x->channels[0];

太多的异常可能是c++11没有引用，模板类报的错，解决：

g++ -std=c++11

下面的异常：

/home/lbg/quwutest/main.cpp:59: error: 'i' cannot appear in a constant-expression
min(img.at<Vec<float, 3>>(i, j)[0], img.at<Vec<float, 3>>(i, j)[1]),

这个异常解决方法也是c++11

QMAKE_CXXFLAGS += -std=c++11