'cmath' file not found

本文详细介绍了如何在C++项目中解决Box2D库中的b2Vec2类型与Cocos2D库中数学类型的重复利用问题,通过将main.m改为main.mm文件,成功解决了cmath、iostream等相关预编译指令无法正常引入的问题。

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box2d 的 b2Vec2 类型和 cocos2d 的 CGPoint,CGSize, CGRect,我想拿出来自己用,

于是新建了一个 Terminal 工程。

因为 CGPoint 和 苹果自带的 CoreGraphics里面自带的~

而 box2d 里面的 b2Vec2 类型我也经常用到,

包含 b2Vec2 类型定义的头文件 b2Math.h 里面同时也包含了不少 有用的,线程的方法,

因此我很想来重复利用这些现成的东西。

但是遇到了一些问题:

‘cmatch’ file no found, 'iostream' not recognized等等,

包含在 b2Math.h 的

#include <cmath>

#include <cfloat>

#include <cstddef>

#include <cassert>

#include <limits>

等预编译指令,竟然每一个都有问题,都无法正常的引入!

后来找到了一篇帖子:

C++ #include help?

Quote:
Originally Posted by BlackBlade View Post
cmath related errors are simply this, "cmath" file not found, and iostream is not recognized, i then went through the whole list of include functions(not sure what to call them) and the closest thing on there is IOsurface or IOsurface.h
Did you create a C++ project and not Objective-C or Cocoa? I you pick a Cocoa application you will get this error.



Quote:
Originally Posted by subsonix View Post
Did you create a C++ project and not Objective-C or Cocoa? I you pick a Cocoa application you will get this error.
i am an idiot, i figured it out, i never made a file in the project i simply used main.m
just tried making a c++ file and it worked

thanks a lot, now i won't fail! thanks again


根据帖子里面所提到的相关信息,在我将 main.m 改成 main.mm 文件以后,编译成功通过~


gdb 调试启动失败 path not found launch.json 配置调试路径 c:\Users\General\Desktop\一个文件夹\C\练习{ "configurations": [ { "name": "Win64", "includePath": ["${workspaceFolder}/**"], "defines": ["_DEBUG", "UNICODE", "_UNICODE"], "windowsSdkVersion": "10.0.18362.0", "compilerPath": "C:/MinGW/bin/g++.exe", "cStandard": "c17", "cppStandard": "c++17", "intelliSenseMode": "gcc-x64" } ], "version": 4 }{ "version": "0.2.0", "configurations": [ { "name": "(gdb) Launch", "type": "cppdbg", "request": "launch", "program": "${fileDirname}\\${fileBasenameNoExtension}.exe", "args": [], "stopAtEntry": false, "cwd": "${workspaceRoot}", "environment": [], "externalConsole": true, "MIMode": "gdb", "miDebuggerPath": "C:\\MinGW\\bin\\gdb.exe", "preLaunchTask": "g++", "setupCommands": [ { "description": "Enable pretty-printing for gdb", "text": "-enable-pretty-printing", "ignoreFailures": true } ] } ] }{ "files.associations": { "*.py": "python", "iostream": "cpp", "*.tcc": "cpp", "string": "cpp", "unordered_map": "cpp", "vector": "cpp", "ostream": "cpp", "new": "cpp", "typeinfo": "cpp", "deque": "cpp", "initializer_list": "cpp", "iosfwd": "cpp", "fstream": "cpp", "sstream": "cpp", "map": "c", "stdio.h": "c", "algorithm": "cpp", "atomic": "cpp", "bit": "cpp", "cctype": "cpp", "clocale": "cpp", "cmath": "cpp", "compare": "cpp", "concepts": "cpp", "cstddef": "cpp", "cstdint": "cpp", "cstdio": "cpp", "cstdlib": "cpp", "cstring": "cpp", "ctime": "cpp", "cwchar": "cpp", "exception": "cpp", "ios": "cpp", "istream": "cpp", "iterator": "cpp", "limits": "cpp", "memory": "cpp", "random": "cpp", "set": "cpp", "stack": "cpp", "stdexcept": "cpp", "streambuf": "cpp", "system_error": "cpp", "tuple": "cpp", "type_traits": "cpp", "utility": "cpp", "xfacet": "cpp", "xiosbase": "cpp", "xlocale": "cpp", "xlocinfo": "cpp", "xlocnum": "cpp", "xmemory": "cpp", "xstddef": "cpp", "xstring": "cpp", "xtr1common": "cpp", "xtree": "cpp", "xutility": "cpp", "stdlib.h": "c", "string.h": "c" }, "editor.suggest.snippetsPreventQuickSuggestions": false, "aiXcoder.showTrayIcon": true }{ "version": "2.0.0", "tasks": [ { "label": "g++", "command": "g++", "args": [ "-g", "${file}", "-o", "${fileDirname}/${fileBasenameNoExtension}.exe" ], "problemMatcher": { "owner": "cpp", "fileLocation": [ "relative", "${workspaceRoot}" ], "pattern": { "regexp": "^(.*):(\\d+):(\\d+):\\s+(warning|error):\\s+(.*)$", "file": 1, "line": 2, "column": 3, "severity": 4, "message": 5 } }, "group": "build" }, { "type": "cppbuild", "label": "C/C++: g++.exe 生成活动文件", "command": "C:/MinGW/bin/g++.exe", "args": [ "-fdiagnostics-color=always", "-g", "${file}", "-o", "${fileDirname}\\${fileBasenameNoExtension}.exe" ], "options": { "cwd": "C:/MinGW/bin" }, "problemMatcher": [ "$gcc" ], "group": { "kind": "build", "isDefault": true }, "detail": "调试器生成的任务。" } ] }
最新发布
06-21
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