C++ 在路径中找不到 Eclipse g++：windows
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Eclipse g++ not found in path: windows
提问by Matt Martin
I am attempting to setup SDL2 for C++ with Eclipse on Windows 7.
我正在尝试在 Windows 7 上使用 Eclipse 为 C++ 设置 SDL2。
In order to do so, I am following the tutorial in this link, which states that I must first install MinGW. So I follow the linkprovided in order to setup MinGW. I follow all the steps without issue. I then open Eclipse and attempt to build a simple hello world program:
为此，我遵循此链接中的教程，其中指出我必须首先安装 MinGW。所以我按照提供的链接来设置 MinGW。我按照所有步骤没有问题。然后我打开 Eclipse 并尝试构建一个简单的 hello world 程序：
#include <iostream>
using namespace std;
int main() {
cout << "Hello World!" << endl;
return 0;
}
To my surprise, this code doesn't build, with 6 errors.
令我惊讶的是，这段代码没有构建，有 6 个错误。
I then proceed to simplify the program further:
然后我继续进一步简化程序：
int main()
{
return 0;
}
This also does not compile. There are two errors:
这也不能编译。有两个错误：
- Program "g++" not found in PATH
- Program "gcc" not found in PATH
- 在 PATH 中找不到程序“g++”
- 在 PATH 中找不到程序“gcc”
Here is a screenshot.
这是一个屏幕截图。
However, my path does contain "C:\mingw\bin". I have also tried changing this to "C:\mingw". Looking inside "C:\mingw\bin", I find gcc and g++:
但是，我的路径确实包含“C:\mingw\bin”。我也尝试将其更改为“C:\mingw”。查看“C:\mingw\bin”内部，我发现 gcc 和 g++：
In addition, compiling a test program using the command line (g++ Test.cpp -o Test) works just fine, as does "g++ -v".
此外，使用命令行 (g++ Test.cpp -o Test) 编译测试程序工作正常，“g++ -v”也是如此。
I have been searching the web for hours, and can't seem to find an answer as to why Eclipse can't seem to compile anything with MinGW. Questions I have looked at on SO (which haven't been able to fix my issue) include:
我已经在网上搜索了几个小时，似乎无法找到为什么 Eclipse 似乎无法用 MinGW 编译任何东西的答案。我在 SO 上查看的问题（无法解决我的问题）包括：
- Eclipse mingw binary not found
- Eclipse not finding c std libraries
- g++ not found in path
- Eclipse C++ : "Program g++ not found in PATH"
- Program g++ not found in path
- Program g++ not found in path C++ [duplicate]
- Eclipse CDT (Juno) in Win7: Cannot find g++ in PATH, iostream unresolved and other fun stuff
- 找不到 Eclipse mingw 二进制文件
- Eclipse 找不到 c std 库
- 在路径中找不到 g++
- Eclipse C++：“在路径中找不到程序 g++”
- 在路径中找不到程序 g++
- 在路径 C++ 中找不到程序 g++ [重复]
- Win7 中的 Eclipse CDT (Juno)：在 PATH 中找不到 g++、iostream 未解析和其他有趣的东西
Additional info:Window > Preferences > C/C++ > Build > Settings > "CDT GCC Built-in Complier Settings MinGW [Shared]" : Toolchain MinGW GCC is not detected on this system.
附加信息：窗口 > 首选项 > C/C++ > 构建 > 设置 > “CDT GCC 内置编译器设置 MinGW [共享]”：在此系统上未检测到工具链 MinGW GCC。
I have also reinstalled Eclipse to no avail.
我也重新安装了 Eclipse 无济于事。
I realize that this may be a duplicate question of some that I have linked, but the information in previous questions have not been able to fix my problem, and I fear that adding a comment to an old question may not result in an answer.
我意识到这可能是我链接的某些问题的重复问题，但之前问题中的信息无法解决我的问题，我担心向旧问题添加评论可能不会得到答案。
Please request additional information as needed.
请根据需要索取其他信息。
回答by Jhossep Augusto Popayán Avila
You need to set the environment for the c/c++ builder.
您需要为 c/c++ 构建器设置环境。
- First you need to install the GNU tool-chain, you can choose either MinGW or Cygwin. You can see the steps here. I used MinGW.
- Go to Window->Preferences->C/C++->Build->Environmentand add a new variable, name it whatever you want for example a named it "MINGW", now paste the binaries directory of MinGW which is by default C:\MinGW\bin, you should have something like this:
- 首先您需要安装 GNU 工具链，您可以选择 MinGW 或 Cygwin。您可以在此处查看步骤。我使用了 MinGW。
- 转到Window->Preferences->C/C++->Build->Environment并添加一个新变量，将其命名为您想要的任何名称，例如将其命名为“MINGW”，现在粘贴 MinGW 的二进制目录，默认情况下为C： \MinGW\bin，你应该有这样的东西：
- Now when you create a new project you just have to select the MinGW tool-chain:
- 现在，当您创建一个新项目时，您只需选择 MinGW 工具链：
Hope that helps.
希望有帮助。
回答by Matt Martin
It appears as though I have fixed the problem for the moment.
看来我暂时已经解决了这个问题。
In case others encounter the same issue: Project > Properties > C/C++ Build > Settings > MinGW C++ Linker > Command changed from "g++" to "C:\mingw\bin\g++".
如果其他人遇到同样的问题：项目 > 属性 > C/C++ 构建 > 设置 > MinGW C++ 链接器 > 命令从“g++”更改为“C:\mingw\bin\g++”。
