Linux Eclipse、Ubuntu 中未解决的 <iostream>
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Unresolved <iostream> in Eclipse, Ubuntu
提问by David Kaczynski
Yes, it's thisquestion again...
是的，又是这个问题……
Somehow, I cannot get this issue resolved. Believe it or not, I have experience with Eclipse but only for Java development. I have programmed in C++ using vi but not with Eclipse.
不知何故，我无法解决这个问题。信不信由你，我有使用 Eclipse 的经验，但仅限于 Java 开发。我已经使用 vi 用 C++ 编程，但没有使用 Eclipse。
I have installed:
我已经安装：
- Ubuntu 12.04
- Eclipse 3.7.2
- GCC 4.6.3
- Eclipse CDT 8.0.2
- Ubuntu 12.04
- 日食 3.7.2
- 海湾合作委员会 4.6.3
- 日食 CDT 8.0.2
I created an empty Makefile project and selected the Linux GNU Toolchain:
我创建了一个空的 Makefile 项目并选择了 Linux GNU 工具链：
I get the standard Unresolved inclusion <iostream>error, and I have some references to various "include" directories in the project:
我得到标准Unresolved inclusion <iostream>错误，并且我对项目中的各种“包含”目录有一些引用：
I did notice that, while my "Paths and Symbols" setting for GNU C contains various paths, the same setting for GNU C++ is empty:
我确实注意到，虽然我的 GNU C 的“路径和符号”设置包含各种路径，但 GNU C++ 的相同设置是空的：
Also, I have the "GNU Elf Parser" under my C/C++ build settings:
另外，我的 C/C++ 构建设置下有“GNU Elf Parser”：
What am I doing wrong here?
我在这里做错了什么？
Cheers
干杯
Edit:
编辑：
Here's an updated photo of my a project's build path that is working correctly:
这是我的项目构建路径的更新照片，该路径正常工作：
采纳答案by Benjamin
The reason is that Eclipse simply cannot import a proper header. C++ iostream header in Ubuntu can be found:
原因是 Eclipse 根本无法导入正确的标头。可以在 Ubuntu 中找到 C++ iostream 头文件：
$: sudo find / -name iostream
/home/beniamin/QtSDK/Madde/toolchains/arm-2009q3-67-arm-none-linux-gnueabi-x86_64-unknown-linux-gnu/arm-2009q3-67/arm-none-linux-gnueabi/include/c++/4.4.1/iostream /home/beniamin/QtSDK/Madde/sysroots/harmattan_sysroot_10.2011.34-1_slim/usr/include/c++/4.4/iostream /usr/share/gccxml-0.9/GCC/2.95/iostream /usr/include/c++/4.6/iostream /usr/include/boost/tr1/tr1/iostream
$: sudo find / -name iostream
/home/beniamin/QtSDK/Madde/toolchains/arm-2009q3-67-arm-none-linux-gnueabi-x86_64-unknown-linux-gnu/arm-2009q3-67/arm-none-linux-gnueabi/include/c++/4.4.1/iostream /home/beniamin/QtSDK/Madde/sysroots/harmattan_sysroot_10.2011.34-1_slim/usr/include/c++/4.4/iostream /usr/share/gccxml-0.9/GCC/2.95/iostream /usr/include/c++/4.6/iostream /usr/include/boost/tr1/tr1/iostream
So basically, I suppose the one you are looking for is /usr/include/c++/4.6/iostream, so you should in some place include this directory.
所以基本上，我想你要找的是/usr/include/c++/4.6/iostream，所以你应该在某个地方包含这个目录。
Edit: You should also have installed g++, or simply install build-essential package, which is obligatory for building debian packages. Nevertheless, g++ should have been included in your Ubuntu installation anyway.
编辑：您还应该安装 g++，或者只是安装 build-essential 包，这是构建 debian 包所必需的。尽管如此，无论如何，g++ 应该已经包含在您的 Ubuntu 安装中。
回答by Snow
Yes, I have found that using
是的，我发现使用
$: sudo find / -name iostream
and adding the includes file in the includes path and then it success.
并在包含路径中添加包含文件，然后它就成功了。
