无法使用特征库进行编译

Cannot compile with Eigen Library

本文关键字：编译 特征      更新时间：2023-10-16

我正在Linux上编写一个C++应用程序。

对于特定任务，我需要包含Eigen库。

我安装了libeigen3-dev包，并以这种方式将其包含在我的代码中：

#include <Eigen/Dense>

然后，我尝试使用以下命令编译此文件：

g++    -I/usr/include/eigen3 -c TetrisAgent.cpp -o TetrisAgent.o

我正在使用gcc version 4.7.2.

不幸的是，由于此错误，我无法编译它：

In file included from /usr/include/eigen3/Eigen/Core:329:0,
                 from /usr/include/eigen3/Eigen/Dense:1,
                 from TetrisAgent.cpp:24:
/usr/include/eigen3/Eigen/src/Core/GeneralProduct.h:121:14: error: expected ‘>’ before numeric constant
/usr/include/eigen3/Eigen/src/Core/GeneralProduct.h:121:56: error: ‘N’ was not declared in this scope
/usr/include/eigen3/Eigen/src/Core/GeneralProduct.h:121:59: error: template argument 2 is invalid
make: *** [TetrisAgent.o] Error 1

谁能帮我修复它？

编辑：这是为了回答阿尔伯特的问题"在包含之前，你很可能已经在自己的代码（俄罗斯方块代理.cpp）中出现了错误。你能把所有代码都添加到包含中，即前 24 行吗？

/* 
* Copyright (C) 2008, Brian Tanner
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
     http://www.apache.org/licenses/LICENSE-2.0
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */
#include <stdio.h>  /* for printf */
#include <string.h> /* for strcmp */
#include <time.h> /*for time()*/
#include <rlglue/Agent_common.h> /* agent_ function prototypes and RL-Glue types */
#include <rlglue/utils/C/RLStruct_util.h> /* helpful functions for allocating structs and cleaning them up */
#include "tetris_utils.h"
#include <vector>
#include <Eigen/Dense>

编辑 2：这是tetris_utils.h文件的代码：

#define GRID_WIDTH 10
#define GRID_HEIGHT 20
#define BATCH_SIZE 100
//number of games before updating the weights
#define M 10
static int available_rotations[] = {1,3,3,0,1,1,3};
static int max_position[7][4] = {{10,7,0,0}, 
                                {9,8,9,8}, 
                                {9,8,9,8}, 
                                {9,0,0,0}, 
                                {8,9,0,0}, 
                                {8,9,0,0}, 
                                {8,9,8,9} };

struct state_dump{
    int features[21];
    float V;
    float reward;
};

#define M 10

^ 在不考虑范围的情况下重新定义单个字母是一个坏主意。

请尝试static int const M = 10;。

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