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c ++无法找到包含

刚刚在debian 7中安装了build-essentinals.但是我注意到c ++的包含在/ usr/include/c ++/4.7中...有人为什么?包含曾经在/ usr/include中,据我记得...

一切都失败了......即

main.c:2:20: fatal error  iostream: No such file or directory
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即使我用-I包含它,标题也会从标题中调用,它不会找到任何内容,例如:

/usr/include/features.h:323:26: fatal error: bits/predefs.h: No such file or directory
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所以beacuse位不在/ usr/include中但在/usr/include/c++/4.7编译器找不到它...

我正在使用g ++

crafter# g++ -o craft main.cpp 
In file included from /usr/include/c++/4.7/x86_64-linux-gnu/bits/os_defines.h:40:0,
                 from /usr/include/c++/4.7/x86_64-linux-gnu/bits/c++config.h:414,
                 from /usr/include/c++/4.7/iostream:39,
                 from main.cpp:2:
/usr/include/features.h:323:26: fatal error: bits/predefs.h: No such file or directory
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编译终止.

谁知道如何解决这个问题?

谢谢你的帮助!

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